CN114046830A - Flowmeter metering parameter detection system - Google Patents
Flowmeter metering parameter detection system Download PDFInfo
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- CN114046830A CN114046830A CN202111328329.7A CN202111328329A CN114046830A CN 114046830 A CN114046830 A CN 114046830A CN 202111328329 A CN202111328329 A CN 202111328329A CN 114046830 A CN114046830 A CN 114046830A
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- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- 229910052790 beryllium Inorganic materials 0.000 description 14
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- 230000000149 penetrating effect Effects 0.000 description 11
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- 238000013461 design Methods 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
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- 229910001069 Ti alloy Inorganic materials 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/026—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving liquids
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Abstract
The invention discloses a flow meter metering parameter detection system which comprises a flow meter body, wherein a fluid metering channel is arranged in the flow meter body, the outer wall of the flow meter body is provided with a differential pressure detection module and a temperature detection module, two pressure introduction channels are arranged on the flow meter body along the radial direction of the fluid metering channel, inner ports of the two pressure introduction channels are respectively communicated with two different positions in the axial direction of the fluid metering channel, outer ports of the two pressure introduction channels are respectively in sealing connection with the differential pressure detection module, the flow meter body is also provided with a temperature detection channel, the inner end of the temperature detection channel is connected with one of the pressure introduction channels, and the outer port of the temperature detection channel is in sealing connection with the temperature detection module. The invention has the beneficial effects that: the safety and the structural simplicity of the flowmeter are improved.
Description
Technical Field
The invention belongs to the technical field of fluid detection devices, relates to a flowmeter, and particularly relates to a flowmeter metering parameter detection system.
Background
An underwater flowmeter is a commonly used instrument device for ocean oil and gas well engineering. Because of the underwater use, the underwater flowmeter not only has the accurate measurement function, but also has the capability of enduring severe working conditions such as high pressure, corrosion and the like. The underwater flowmeter generally comprises a flowmeter body with a metering channel arranged therein, wherein the flowmeter body is connected with a pressure detection instrument and a temperature detection instrument and is used for detecting pressure and temperature information of well flow. In addition, because the well flow components of the oil-gas well are complex and often contain well flow components in three forms of liquid, gas and solid, the most real and reliable well flow data can be obtained only by accurately measuring and distinguishing the well flow components in the three forms, so as to guide production, and the multiphase flowmeter for distinguishing the well flows in various forms based on radiation detection is produced at the same time. The multiphase flowmeter comprises a pressure detection instrument, a temperature detection instrument, a radioactive source and a ray detection assembly, wherein rays emitted by the radioactive source penetrate through fluid and are received by the ray detection assembly. The pressure signal, the temperature signal and the ray signal are all transmitted to the electronic device module, and finally the electronic device module transmits the signals to a drilling platform or a coastal data workstation in a wired or wireless mode for further analysis and calculation, so that the flow of each phase is calculated. Pressure detection instrument, temperature detection instrument all need direct and fluid switch-on, radiation source and ray detection subassembly also need install on the flowmeter body to signal output lead wire still need connect detection module and electron device module, how lay these functional module on the flowmeter body of limited size, and improve module self protective capability and realize sealed between the different modules, with the reliability that improves the flowmeter, and control flowmeter overall dimension, weight and structure succinct, need follow the careful consideration in structural design.
Disclosure of Invention
In view of this, the present invention provides a system for detecting measurement parameters of a flow meter, in order to reasonably set modules for measuring pressure, temperature, etc. communicated with a fluid measurement channel.
The technical scheme is as follows:
a flow meter measurement parameter detection system comprises a flow meter body, a fluid measurement channel is arranged in the flow meter body, and the key is that,
the outer wall of the flowmeter body is provided with a differential pressure detection module and a temperature detection module;
two pressure guide runners are arranged on the flowmeter body along the radial direction of the fluid metering channel, inner ports of the two pressure guide runners are respectively communicated with two different axial positions of the fluid metering channel, and outer ports of the two pressure guide runners are respectively connected with the differential pressure detection module in a sealing manner;
the flowmeter body is also provided with a temperature detection flow channel, the inner end of the temperature detection flow channel is connected with one of the pressure guiding flow channels, and the outer port of the temperature detection flow channel is hermetically connected with the temperature detection module.
As a preferred technical scheme, the outer wall of the flowmeter body is provided with a measuring module mounting plane parallel to the central line of the fluid metering channel, and the measuring module mounting plane is fixedly provided with the differential pressure detection module and the temperature detection module;
the central lines of the two pressure-leading runners are perpendicular to the mounting plane of the measuring module, and the outer ends of the two pressure-leading runners are opened on the mounting plane of the measuring module;
the temperature detection runner is L-shaped, and comprises a first section and a second section which are connected in a mutually perpendicular manner, wherein the first section is perpendicular to the pressure guiding runner, one end of the first section is connected with the pressure guiding runner in a corresponding manner, the other end of the first section is connected with the inner end of the second section, an outer end opening of the second section is arranged on the mounting plane of the measuring module, and the second section is parallel to the pressure guiding runner.
As a preferred technical scheme, a radioactive source mounting plane is arranged on the outer wall of the flowmeter body outside the measuring module mounting plane, and a transmitting window is arranged on the radioactive source mounting plane;
drilling a process hole on the corresponding pressure-inducing flow channel from the radioactive source mounting plane, wherein the middle part of the process hole is connected with the second section, the part of the process hole between the pressure-inducing flow channel and the second section forms the first section, and the outer end of the process hole is blocked;
and the emission window is covered with a radioactive source hatch which is sealed with the radioactive source installation plane and covers the outer end of the technical hole.
As a preferred technical solution, the differential pressure detection module comprises differential pressure sensors, and the differential pressure sensors are respectively connected with the two pressure-leading runners;
the temperature detection module comprises a temperature sensor, and the temperature sensor is connected with the temperature detection flow channel;
the differential pressure sensor and the temperature sensor are both columnar, one end of the differential pressure sensor is expanded to form a head, the other end of the differential pressure sensor and the temperature sensor is a tail, and the columnar center lines of the differential pressure sensor and the temperature sensor are parallel to the installation plane of the measuring module;
the head and tail of the differential pressure sensor and the temperature sensor face opposite directions.
As a preferred technical solution, the head of the differential pressure sensor faces the pressure-inducing flow channel outer port far away from the temperature detection flow channel, and is connected with the pressure-inducing flow channel outer port through a first flow channel joint component, and is also connected with another pressure-inducing flow channel outer port through a second flow channel joint component, and the tail of the differential pressure sensor is close to the pressure-inducing flow channel connected with the temperature detection flow channel;
the head of the temperature sensor is over against the outer port of the temperature detection runner, the head of the temperature sensor and the tail of the differential pressure sensor are respectively positioned on two sides of the plane where the central lines of the two pressure guide runners are positioned, and the head of the temperature sensor is connected with the outer port of the temperature detection runner through a third runner joint component.
As a preferred technical scheme, a first sensor mounting seat is arranged in the middle of the differential pressure sensor, and the differential pressure sensor is fixed on the mounting plane of the measurement module by the first sensor mounting seat;
the middle part of the temperature sensor is provided with a second sensor mounting seat, and the second sensor mounting seat fixes the temperature sensor on the mounting plane of the measuring module.
As a preferred technical scheme, the first sensor mounting seat and the second sensor mounting seat have the same structure;
the first sensor mounting seat comprises a fixing block attached to a mounting plane of the measuring module, the fixing block is connected with the outer wall of the flowmeter body through bolts, the fixing block is connected with a hoop through a stud, and the hoop holds the differential pressure sensor.
As a preferred technical scheme, flow channel butt-joint holes are respectively formed at the outer ports of the pressure guide flow channel and the temperature detection flow channel, and each flow channel butt-joint hole is in sealing connection with the corresponding flow channel joint component;
the flow channel joint assembly comprises a flow channel joint and a drainage tube, the flow channel joint comprises a drainage tube connecting section and a connecting hole embedding section which are sequentially connected along the axial direction, at least part of the connecting hole embedding section protrudes out of the drainage tube connecting section along the circumferential direction, two ends of the drainage tube are respectively communicated with the parameter detection module and the corresponding drainage tube connecting section, and a flow channel joint locking seat matched with the corresponding flow channel butt joint hole is sleeved on the drainage tube connecting section;
when the runner joint locking seat is locked on the runner butt joint hole, the connecting hole placing section can be limited between the insertion end of the runner joint locking seat and the hole bottom of the runner butt joint hole, and a gap between the peripheral surface of the drainage tube connecting section and the wall of the runner butt joint hole is sealed.
As a preferred technical scheme, the flow passage butt joint hole comprises a screw hole, an insertion hole and a shaft sealing hole which are sequentially communicated from outside to inside in the axial direction, wherein the shaft sealing hole is in a circular truncated cone shape, a circular truncated cone-shaped first shaft sealing surface matched with the shaft seal hole is arranged at the front end of the connecting hole insertion section, the front end of the connecting hole insertion section is inserted into the shaft seal hole, the first shaft sealing surface is attached to the shaft seal hole and is axially compressed, the middle part of the connecting hole insertion section is inserted into the insertion hole, and the tail part of the connecting hole insertion section is positioned in the screw hole;
the runner joint locking seat comprises a hexagon nut section and a screw section, wherein the hexagon nut section and the screw section are sequentially connected along the axial direction, the screw section is matched with the screw section, a joint mounting hole penetrates through the runner joint locking seat in the axial direction, the runner joint locking seat is sleeved on the drainage tube connecting section in a sealing mode, screw threads of the screw section are spirally arranged in the screw hole, and the screw section is tightly abutted to the axial direction of the tail part of the connecting hole embedding section.
As a preferred technical scheme, the tail end of the connecting hole embedding section is provided with a circular truncated cone-shaped second shaft cover, a circular truncated cone-shaped axial pressing surface matched with the second shaft cover is arranged in the joint mounting hole, and the axial pressing surface and the second shaft cover are axially pressed;
and a first radial sealing groove is also annularly arranged in the middle of the connecting hole embedding section, a first sealing ring is arranged in the first radial sealing groove, and the first sealing ring is tightly attached to the inner wall of the embedding hole.
As a preferred technical scheme, parameter signal leads are respectively led out from the tail part of the differential pressure sensor and the tail part of the temperature sensor;
a protective cover is buckled on the mounting plane of the measuring module, and an electronic bin is fixedly arranged on the outer wall of the flowmeter body close to one side of the mounting plane of the measuring module in a sealing way;
a signal wire hole for penetrating the parameter signal lead is arranged on the flowmeter body in a penetrating manner, a lead penetrating end and a lead penetrating end are respectively arranged at two ends of the signal wire hole, the lead penetrating end is opened on the mounting plane of the measuring module, and the lead penetrating end is opened on the outer wall of the flowmeter body corresponding to the electronic bin and is communicated with the inner cavity of the electronic bin;
the edge of the protective cover is fixedly connected with the outer wall of the flowmeter body in a sealing manner, so that the lead wire penetrates out of the end, the differential pressure detection module, the temperature detection module, the outer port of the pressure guide flow channel and the outer port of the temperature detection flow channel are sealed in the protective cover.
As a preferred technical scheme, the protective cover is in a semi-cylindrical shell shape, the edge of the protective cover is fixedly provided with a fitting frame, the fitting frame is connected with the mounting plane of the measuring module through bolts, and a sealing frame strip is clamped between the fitting frame and the mounting plane of the measuring module.
As a preferred technical scheme, the lead penetrating end is positioned on one side of the mounting plane of the measuring module close to the electronic bin;
the outer wall of the flowmeter body is provided with two parallel measuring module mounting planes, the two measuring module mounting planes are positioned on two sides of a fluid metering channel, an electronic bin butt joint blind hole is formed in the outer wall of the flowmeter body between the two measuring module mounting planes, and the electronic bin butt joint blind hole is in sealed butt joint with an opening of the electronic bin;
the two measuring module mounting planes are respectively provided with a set of differential pressure detection module and a set of temperature detection module;
the signal line holes on the two measuring module mounting planes respectively extend to a pair of side walls of the electronic bin butt joint blind hole from the two measuring module mounting planes relatively.
Compared with the prior art, the invention has the beneficial effects that: the hidden temperature detection flow channel is favorable for improving the safety, the temperature detection flow channel is connected with the pressure guiding flow channel, the radial connection channel of the fluid metering channel is as few as possible, the number of pipelines outside the flowmeter body is reduced, the differential pressure detection module and the temperature detection module are conveniently and compactly arranged outside the flowmeter body, and the safety and the structural simplicity of the flowmeter are improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a first perspective of a flow meter having the structure of the present invention showing a parameter sensing module in an exploded configuration within a protective cover;
FIG. 3 is a schematic diagram of a second perspective of a flow meter having the construction of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 6 is a schematic diagram of the flow meter with one of the protective covers removed;
FIG. 7 is a cross-sectional view taken at C-C of FIG. 6;
FIG. 8 is a cross-sectional view taken along line D-D of FIG. 6;
FIG. 9 is a schematic structural view of a first sensor mount;
FIG. 10 is a schematic view of the connection structure of the flow channel connector assembly and the flow channel docking hole;
FIG. 11 is a schematic view of the runner joint lock;
FIG. 12 is a schematic view of the mounting structure of the radiation source module and the radiation probe module;
fig. 13 is a schematic view of the assembly relationship among the collimator, the first beryllium pad, the first isolation seat, and the clamp ring, the second beryllium pad, and the second isolation seat.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 to 4, a flowmeter includes a flowmeter body 100, and a fluid metering passage 110 is provided in the flowmeter body 100. The flowmeter body 100 is provided with a radiation source module and a radiation probe module, which are oppositely arranged on two sides of the fluid metering channel 110. The flowmeter body 100 is provided with a detection flow channel, the inner end of the detection flow channel is communicated with the fluid metering channel 110, and the outer end of the detection flow channel is opened on the outer wall of the flowmeter body 100. The flowmeter body 100 is provided with a parameter detection module, the parameter detection module is hermetically connected with the outer port of the detection flow channel, and the parameter detection module is further connected with a parameter signal lead. Flowmeter body 100 outer wall sealing fixation is provided with safety cover 800, safety cover 800 edge with flowmeter body 100 outer wall sealing fixed connection is in with parameter detection module and detection runner outer port seal in safety cover 800, make these potential weak structures be located under safety cover 800's the protection.
As can be seen from fig. 1, 5 and 6, the electronic cabin 600 is also fixedly and hermetically arranged on the outer wall of the flowmeter body 100. The flowmeter body 100 is provided with a signal wire hole 140 for passing through the parameter signal lead wire, the two ends of the signal wire hole 140 are respectively a lead wire passing end and a lead wire passing end, the lead wire passing end is opened on the outer wall of the flowmeter body 100 covered by the protective cover 800, and the lead wire passing end is opened on the outer wall of the flowmeter body 100 corresponding to the electronic bin 600 and communicated with the inner cavity of the electronic bin 600. In this way, the lead-through end is also located under the protection of the protective cover 800, and the parameter signal lead is directly led into the electronics compartment 600 via the internal channel of the flowmeter body 100, reducing the structural risk.
Moreover, the electronic compartment 600 is directly connected with the outer wall of the flowmeter body 100 in a sealing way, and is not connected with the detection module compartment 700 for installing the ray probe module as in the prior art, so that the risk of the detection module compartment 700 is reduced.
For convenient assembly, the outer wall of the flowmeter body 100 is provided with a measuring module mounting plane 101 parallel to the central line of the fluid metering channel 110, the parameter detecting module is fixedly arranged on the measuring module mounting plane 101, the protective cover 800 covers the measuring module mounting plane 101, and the edge of the protective cover 800 is sealed with the measuring module mounting plane 101.
As shown in fig. 2 and 3, in order to improve the pressure resistance, the protection cover 800 is in a semi-cylindrical shell shape, an attachment frame 801 is fixedly arranged at the edge of the protection cover 800, the attachment frame 801 is connected with the measurement module mounting plane 101 through a bolt, and a sealing frame strip 810 is clamped between the attachment frame 801 and the measurement module mounting plane 101. The two sealing frame strips 810 are respectively close to the inner edge and the outer edge of the attaching frame 801.
In order to improve redundancy, two measurement module installation planes 101 are arranged on the outer wall of the flowmeter body 100 in parallel, and the two measurement module installation planes 101 are respectively arranged on two sides of the fluid metering channel 110 and two sides of the electronic bin 600. Each measuring module mounting plane 101 is provided with a set of parameter detection module, and the parameter signal leads of the two sets of parameter detection modules are respectively led into the electronic bin 600.
As can be seen from fig. 5, 6 and 8, the outer wall of the flowmeter body 100 corresponding to the electronic chamber 600 is provided with an electronic chamber docking blind hole 102, the electronic chamber docking blind hole 102 is in docking and sealing with the opening of the electronic chamber 600, and the inside of the electronic chamber is used for mounting an electronic device module. The electronic bin butt-joint blind hole 102 is located between the two measurement module mounting planes 101. The signal wire hole 140 is a straight-line hole, a lead wire penetrating end of the signal wire hole 140 is opened on the measurement module mounting plane 101, and a lead wire penetrating end of the signal wire hole 140 is opened on a hole wall of the electronic bin butt joint blind hole 102.
Based on the structural symmetry design, the signal line holes 140 on the two measurement module mounting planes 101 respectively extend from the two measurement module mounting planes 101 to a pair of opposite side hole walls of the electronic bin butt-joint blind hole 102.
As shown in fig. 1, the parameter detection module consists of a differential pressure detection module 300 and a temperature detection module 400. As can be seen in conjunction with fig. 4 and 7, the detection flow path includes two pressure introduction flow paths 120 and one temperature detection flow path 130.
The two pressure-inducing flow channels 120 are arranged along the radial direction of the fluid metering channel 110, the inner ports of the two pressure-inducing flow channels 120 are respectively communicated with two different axial positions of the fluid metering channel 110, and the outer ports of the two pressure-inducing flow channels 120 are opened on the corresponding measuring module mounting plane 101. The center lines of the two pressure-inducing flow passages 120 are coplanar with the center line of the fluid metering passage 110. For convenience of description, the two pressure introduction flow passages 120 are respectively referred to as a first pressure introduction flow passage 120 and a second pressure introduction flow passage 120. In the venturi flow meter of the present embodiment, as shown in fig. 3, the fluid metering passage 110 is a venturi tube cavity, the first pressure-inducing flow passage 120 is connected to the inlet portion of the venturi tube cavity, and the second pressure-inducing flow passage 120 is connected to the throat portion of the venturi tube cavity.
As shown in FIG. 1, the differential pressure detection module 300 includes a differential pressure sensor 310 and a first sensor mount 320. The differential pressure sensor 310 is in a column shape, and a column center line of the differential pressure sensor 310 is parallel to the measurement module mounting plane 101. The differential pressure sensor 310 is connected with the outer ports of the two pressure guiding runners 120 in a sealing way.
The first sensor mounting seat 320 is disposed in the middle of the differential pressure sensor 310, and the differential pressure sensor 310 is fixed to the outer wall of the flowmeter body 100 by the first sensor mounting seat 320.
Referring to fig. 6 and 7, the second pressure guiding runner 120 is connected to the temperature detecting runner 130, an inner end of the temperature detecting runner 130 is connected to the second pressure guiding runner 120, and an outer end of the temperature detecting runner 130 is opened on the corresponding measuring module mounting plane 101.
As shown in fig. 1, the temperature detection module 400 includes a temperature sensor 410 and a second sensor mount 420. The temperature sensor 410 is also in a column shape, and a center line of the temperature sensor 410 is parallel to the measurement module mounting plane 101. The second sensor mounting seat 420 is disposed in the middle of the temperature sensor 410, and the second sensor mounting seat 420 fixes the temperature sensor 410 to the outer wall of the flowmeter body 100. The temperature sensor 410 is connected with the outer port of the temperature detection flow channel 130 in a sealing manner.
In this embodiment, the differential pressure sensor 310 and the temperature sensor 410 have the same shape, one end of the differential pressure sensor is expanded to form a head, the other end of the differential pressure sensor is a tail, the head is connected with a corresponding detection flow channel, and a parameter signal lead is led out from the tail.
The differential pressure detection module 300 and the temperature detection module 400 are disposed on the same measurement module mounting plane 101 and located within an area defined by the protection cover 800. On the measuring module mounting plane 101, the parameter detecting module is arranged as follows:
as shown in fig. 1 and 7, an included angle between a column center line of the differential pressure sensor 310 and a plane where center lines of the two pressure guiding runners 120 are located is greater than 0 ° and smaller than 90 °, that is, the differential pressure sensor 310 is obliquely disposed to fully utilize space, one end of the differential pressure sensor 310 is close to an outer port of one of the pressure guiding runners 120, and the other end of the differential pressure sensor 310 is close to an outer port of the other pressure guiding runner 120 and is biased to one side of the plane where the center lines of the two pressure guiding runners 120 are located.
Because the heads of the two sensors are both expanded, the heads and the tails of the differential pressure sensor 310 and the temperature sensor 410 are opposite, and the tail of the differential pressure sensor 310 and the head of the temperature sensor 410 are respectively positioned at two sides of the plane where the central lines of the two pressure guiding runners 120 are positioned.
The head of the differential pressure sensor 310 faces the outer port of the first pressure-inducing flow channel 120 and is connected thereto through the first flow channel joint assembly 500, and the head of the differential pressure sensor 310 is further connected to the outer port of the second pressure-inducing flow channel 120 through the second flow channel joint assembly 500. The tail of the differential pressure sensor 310 is close to the outer port of the second pilot pressure flow passage 120.
The center line of the second pressure introduction flow passage 120 and the center line of the temperature detection flow passage 130 are located in the same plane, which is perpendicular to the center line of the fluid metering passage 110.
As shown in fig. 7, the temperature detection flow channel 130 is L-shaped, and includes a first section 131 and a second section 132 that are connected perpendicularly to each other, the first section 131 is perpendicular to the pressure guide flow channel 120, one end of the first section 131 is connected to the corresponding pressure guide flow channel 120, the other end of the first section 131 is connected to the inner end of the second section 132, the outer end of the second section 132 is opened on the measurement module mounting plane 101, and the second section 132 is parallel to the pressure guide flow channel 120. The outer port of the second section 132 is aligned with the head of the temperature sensor 410, and the head of the temperature sensor 410 is connected to the outer port of the second section 132 via a third flow path connector assembly 500.
The temperature detection flow path 130 is formed by: and drilling a process hole 160 from the outer wall of the flowmeter body 100 outside the measuring module mounting plane 101 to the corresponding pressure guide flow channel 120, wherein the middle part of the process hole 160 is connected with the second section 132, and the part of the process hole 160 between the pressure guide flow channel 120 and the second section 132 forms the first section 131. The outer end of the technical hole 160 is opened on the radioactive source mounting plane of the flowmeter, the outer end of the technical hole 160 is blocked (not shown in the figure), the radioactive source mounting plane is provided with an emission window 103 for mounting a radioactive source module, the outer end of the emission window 103 is sealed and covered with a radioactive source hatch 104, and the radioactive source hatch 104 is sealed with the radioactive source mounting plane and covers the outer end of the technical hole 160, so that the safety of the technical hole 160 is further improved.
The first sensor mount 320 is structurally identical to the second sensor mount 420. Taking the first sensor mounting base 320 as an example, as shown in fig. 9, the first sensor mounting base 320 includes a fixing block 321 attached to the measuring module mounting plane 101, the fixing block 321 is connected to the outer wall of the flowmeter body 100 by bolts, the fixing block 321 is connected to an anchor ear 322 by a stud, and the anchor ear 322 holds the differential pressure sensor 310 or the temperature sensor 410.
Referring to fig. 8, in the present embodiment, the signal leads of the differential pressure sensor 310 and the temperature sensor 410 on each measurement module mounting plane 101 are respectively led into the electronic cabin butt blind hole 102 through one signal wire hole 140. According to the position distribution of the two sensors on the measuring module mounting plane 101, the lead-in ends of the signal wire holes 140 and the temperature sensors 410 are respectively positioned at two sides of the differential pressure sensor 310, and the lead-in ends of the signal wire holes 140 are close to the head of the differential pressure sensor 310, so that the signal wire holes 140 are separated from the sensors and are convenient to machine and mold.
Sensor lead sleeves are connected between the tail parts of the differential pressure sensor 310 and the temperature sensor 410 and lead penetrating ends of the corresponding signal wire holes 140 respectively and are used for penetrating signal leads.
The flow channel joint assembly 500 is consistent with the connection structure of the temperature sensing flow channel 130 or the corresponding pressure introduction flow channel 120 for the simplicity of design and processing. The outer ends of the temperature detecting runner 130 and the pressure guiding runner 120 are respectively formed with runner butting holes 150, and the runner joint assembly 500 is hermetically connected with the corresponding runner butting holes 150.
As shown in fig. 10, the flow channel connector assembly 500 includes a flow channel connector 510 and a drainage tube 520, the flow channel connector 510 includes a drainage tube connection section 511 and a connection hole insertion section 512 sequentially connected along an axial direction, the connection hole insertion section 512 at least partially protrudes out of the drainage tube connection section 511 along a circumferential direction, two ends of the drainage tube 520 are respectively communicated with the parameter detection module and the corresponding drainage tube connection section 511, and a flow channel connector locking seat 530 adapted to the corresponding flow channel butt-joint hole 150 is sleeved on the drainage tube connection section 511. When the runner joint locking seat 530 is locked on the runner docking hole 150, the connection hole insertion section 512 can be limited between the insertion end of the runner joint locking seat 530 and the bottom of the runner docking hole 150, and the gap between the outer peripheral surface of the drainage tube connection section 511 and the wall of the runner docking hole 150 is sealed.
The runner butt-joint hole 150 comprises a screw hole, an insertion hole and a shaft sealing hole which are sequentially communicated from outside to inside in the axial direction, wherein the shaft sealing hole is in a round table shape, a first shaft sealing surface in a round table shape matched with the shaft seal hole is arranged at the front end of the connecting hole insertion section 512, the front end of the connecting hole insertion section 512 is inserted into the shaft seal hole, the first shaft sealing surface is attached to the shaft seal hole and is axially compressed, the middle part of the connecting hole insertion section 512 is inserted into the insertion hole, and the tail part of the connecting hole insertion section 512 is located in the screw hole.
As shown in fig. 10 and 11, the flow channel joint locking seat 530 includes a hexagon nut segment 531 and a screw segment 532 corresponding to the screw hole, which are sequentially connected in the axial direction, a joint mounting hole 533 axially penetrates through the flow channel joint locking seat 530, the flow channel joint locking seat 530 is hermetically sealed on the drainage tube connecting segment 511, the screw segment 532 is threadedly disposed in the screw hole, and the screw segment 532 is axially abutted against the tail of the connecting hole inserting segment 512.
The tail end of the connecting hole embedding section 512 is provided with a circular truncated cone-shaped second shaft cover, and a circular truncated cone-shaped axial pressing surface matched with the second shaft cover is arranged in the joint mounting hole 533 and is axially pressed against the second shaft cover.
A first radial sealing groove is further annularly arranged in the middle of the connecting hole embedding section 512, a first sealing ring is arranged in the first radial sealing groove, and the first sealing ring is tightly attached to the inner wall of the embedding hole.
Such a flow channel joint assembly 500 is simple in connection structure with the flow channel docking hole 150, is convenient to assemble, and can ensure effective sealing.
The electronic bin 600 is close to the detection module bin 700 at the position on the outer wall of the flowmeter body 100, the detection module bin 700 is located between the surfaces of the two measurement module mounting planes 101, the flowmeter body 100 corresponding to the detection module bin 700 is provided with a detection window, and the outer port of the detection window is sealed with the opening of the detection module bin 700, so that a detection module mounting cavity is defined. The probing window and the emission window 103 are oppositely distributed at two sides of the throat part of the Venturi tube cavity, and the inner ends of the probing window and the emission window are opposite and are respectively communicated with the fluid metering channel 110. The radiation source module is installed in the emission window, the ray probe module is installed in the detection module installation cavity, and the ray probe module is used for receiving rays passing through the fluid metering channel 110 in a probing mode to form a ray receiving and transmitting system.
A ray signal lead bushing is connected between the detection module bin 700 and the electronic bin 600, and two ends of the ray signal lead bushing are respectively communicated and sealed with the inner cavities of the detection module bin 700 and the electronic bin 600, so as to lead a ray signal lead from the detection module bin 700 into the electronic bin 600.
Whole flowmeter is arranged parameter detection module and need sealing connection's joint design in safety cover 800 as far as possible, therefore has dual fail-safe's effect, and the signal lead wire of parameter detection module also inserts electron storehouse 600 through the internal passage of seting up on flowmeter body 100 simultaneously, has reduced the external sealed difficulty that brings of signal lead wire and has been damaged the risk.
As shown in fig. 12, the radiation source module includes a radiation source group w21, a collimator w22, and a first isolation seat w24, which are sequentially disposed, the radiation source group w21 is fixed at an outer end of the emission window, the first isolation seat w24 is located at an inner end of the emission window, the collimator w22 is located between the first isolation seat w24 and the radiation source group w21, the first isolation seat w24 separates and seals the fluid metering channel 110 from the emission window, an end surface of an inner end of the first isolation seat w24 is flush with and adapted to an inner wall of the fluid metering channel 110, a first beryllium pad w23 is disposed between the collimator w22 and the first isolation seat w24, and the first isolation seat w24 is made of a titanium alloy material.
The ray probe module comprises a probe assembly y31, a compression ring y32 and a second isolation seat y34 which are sequentially arranged, the probe assembly y31 is fixed in the detection module bin 700, the second isolation seat y34 is located at the inner end of the probing window, the compression ring y32 is located between the probe assembly y31 and the second isolation seat y34, the second isolation seat y34 separates and seals the fluid metering channel 110 and the probing window, the end face of the inner end of the second isolation seat y34 is flush with and adaptive to the inner wall of the fluid metering channel 110, a second beryllium pad y33 is arranged between the compression ring y32 and the second isolation seat y34, and the second isolation seat y34 is made of a titanium alloy material.
As shown in fig. 13, the surface of the first isolation seat w24 facing the collimator w22 is provided with a first embedded counterbore, a first top block w221 matched with the first embedding counter bore is arranged on the collimator w22, a beryllium piece embedding opening is arranged on the first top block w221, the beryllium sheet embedding opening faces to the hole bottom of the first embedding counter bore, the first beryllium pad w23 is embedded in the beryllium sheet embedding opening and matched with the beryllium sheet embedding opening, the first top block w221 extends into the first embedded counterbore, the extending end of the first top block w221 abuts against the bottom of the first embedded counterbore, the first beryllium pad w23 abuts against the bottom of the first embedded counter bore, a collimation hole w22a penetrates through the collimator w22, one end of the collimation hole w22a is large in aperture, the other end of the collimation hole w22 is small in aperture, the small hole end of the collimation hole w22a faces the radiation source group w21, and the large hole end of the collimation hole w22a is communicated with the beryllium sheet embedding opening and faces the first beryllium pad w 23.
A second embedded counter bore is arranged on the surface of the second isolation seat y34 facing the compression ring y32, the second beryllium pad y33 is embedded in the second embedded counter bore and matched with the second embedded counter bore, the compression ring y32 simultaneously compresses the second beryllium pad y33 and the second isolation seat y34, the second embedded counter bore comprises a round hole section and a round platform hole section, the round hole section is close to the fluid metering channel 110, the round platform hole section faces the compression ring y32, the second beryllium pad y33 is embedded in the round hole section, a circle of compression flange y321 is arranged on the end face of the compression ring y32 facing the second embedded counter bore, the compression flange y321 is close to the inner ring of the compression ring y32, the inner ring of the compression flange y321 is flush with the inner ring of the compression ring y32, the compression flange y321 is embedded in the round platform hole section, and the outer ring 321 of the compression flange y is matched with the hole wall of the round platform hole section and matched with each other, the embedded end face of the pressing flange y321 presses the second beryllium pad y33, and the pressing ring y32 and the outer ring of the pressing flange y321 press the second isolation seat y 34.
The thickness of the second beryllium pad y33 is greater than the thickness of the first beryllium pad w 23.
The mounting structure of the radioactive source module and the ray probe module can guarantee the compressive strength in a long time, prolong the service life of the flowmeter and simultaneously reduce the absorption of gamma rays.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (10)
1. A flowmeter measurement parameter detection system comprises a flowmeter body (100), wherein a fluid measurement channel (110) is arranged in the flowmeter body (100), and the flowmeter measurement parameter detection system is characterized in that:
the outer wall of the flowmeter body (100) is provided with a differential pressure detection module (300) and a temperature detection module (400);
two pressure guide flow channels (120) are formed in the flowmeter body (100) along the radial direction of the fluid metering channel (110), inner ports of the two pressure guide flow channels (120) are respectively communicated with two different axial positions of the fluid metering channel (110), and outer ports of the two pressure guide flow channels (120) are respectively in sealing connection with the differential pressure detection module (300);
the flowmeter body (100) is further provided with a temperature detection flow channel (130), the inner end of the temperature detection flow channel (130) is connected with one of the pressure guiding flow channels (120), and the outer port of the temperature detection flow channel (130) is hermetically connected with the temperature detection module (400).
2. The flowmeter metrology parameter detection system of claim 1, wherein: the outer wall of the flowmeter body (100) is provided with a measuring module mounting plane (101) parallel to the central line of the fluid metering channel (110), and the measuring module mounting plane (101) is fixedly provided with the differential pressure detection module (300) and the temperature detection module (400);
the central lines of the two pressure guide flow channels (120) are perpendicular to the measuring module mounting plane (101), and the outer ends of the two pressure guide flow channels (120) are opened on the measuring module mounting plane (101);
the temperature detection runner (130) is L-shaped, and comprises a first section (131) and a second section (132) which are connected in a mutually perpendicular mode, wherein the first section (131) is perpendicular to the pressure guiding runner (120), one end of the first section (131) is connected with the pressure guiding runner (120) correspondingly, the other end of the first section (131) is connected with the inner end of the second section (132), the outer end of the second section (132) is opened on the measuring module mounting plane (101), and the second section (132) is parallel to the pressure guiding runner (120).
3. The flowmeter metrology parameter detection system of claim 2, wherein: the outer wall of the flowmeter body (100) outside the measuring module mounting plane (101) is provided with a radioactive source mounting plane, and the radioactive source mounting plane is provided with a transmitting window (103);
drilling a process hole (160) from the radioactive source mounting plane to the corresponding pressure guide flow channel (120), wherein the middle part of the process hole (160) is connected with the second section (132), the part of the process hole (160) between the pressure guide flow channel (120) and the second section (132) forms the first section (131), and the outer end of the process hole (160) is blocked;
the emission window is covered with a radioactive source hatch cover (104), and the radioactive source hatch cover (104) is sealed with the radioactive source installation plane and covers the outer end of the fabrication hole (160).
4. The flow meter metrology parameter detection system of claim 2 or 3, wherein: the differential pressure detection module (300) comprises a differential pressure sensor (310), and the differential pressure sensor (310) is respectively connected with the two pressure guide flow passages (120);
the temperature detection module (400) comprises a temperature sensor (410), and the temperature sensor (410) is connected with the temperature detection flow channel (130);
the differential pressure sensor (310) and the temperature sensor (410) are both columnar, one end of the differential pressure sensor is expanded to form a head, the other end of the differential pressure sensor and the temperature sensor is a tail, and the columnar center lines of the differential pressure sensor and the temperature sensor are parallel to the measuring module mounting plane (101);
the differential pressure sensor (310) and the temperature sensor (410) face in opposite directions.
5. The flowmeter metrology parameter detection system of claim 4, wherein: the head of the differential pressure sensor (310) is over against the external port of the pressure-inducing flow channel (120) far away from the temperature detection flow channel (130), and is connected with the external port of the pressure-inducing flow channel (120) through a first flow channel joint component (500), and is also connected with the external port of the other pressure-inducing flow channel (120) through a second flow channel joint component (500), and the tail of the differential pressure sensor (310) is close to the pressure-inducing flow channel (120) connected with the temperature detection flow channel (130);
the head of the temperature sensor (410) is right opposite to the outer port of the temperature detection flow channel (130), the head of the temperature sensor (410) and the tail of the differential pressure sensor (310) are respectively positioned at two sides of the plane where the central lines of the pressure guiding flow channels (120) are positioned, and the head of the temperature sensor (410) is connected with the outer port of the temperature detection flow channel (130) through a third flow channel joint component (500).
6. The flowmeter metrology parameter detection system of claim 4, wherein: a first sensor mounting seat (320) is arranged in the middle of the differential pressure sensor (310), and the differential pressure sensor (310) is fixed on the measuring module mounting plane (101) through the first sensor mounting seat (320);
the middle of the temperature sensor (410) is provided with a second sensor mounting seat (420), and the second sensor mounting seat (420) fixes the temperature sensor (410) on the measuring module mounting plane (101).
7. The flowmeter metrology parameter detection system of claim 6, wherein: the first sensor mount (320) is consistent in structure with the second sensor mount (420);
first sensor mount pad (320) are including pasting fixed block (321) of establishing on measuring module mounting plane (101), this fixed block (321) and flowmeter body (100) outer wall bolted connection, and this fixed block (321) are connected with staple bolt (322) through stud, staple bolt (322) are held differential pressure sensor (310).
8. The flowmeter metrology parameter detection system of claim 5, wherein: flow channel butt joint holes (150) are formed in outer ports of the pressure guiding flow channel (120) and the temperature detection flow channel (130) respectively, and each flow channel butt joint hole (150) is connected with the corresponding flow channel joint component (500) in a sealing mode;
the runner joint assembly (500) comprises a runner joint (510) and a drainage tube (520), the runner joint (510) comprises a drainage tube connecting section (511) and a connecting hole embedding section (512) which are sequentially connected along the axial direction, at least part of the connecting hole embedding section (512) protrudes out of the drainage tube connecting section (511) along the circumferential direction, two ends of the drainage tube (520) are respectively communicated with the parameter detection module and the corresponding drainage tube connecting section (511), and a runner joint locking seat (530) matched with the corresponding runner butt joint hole (150) is sleeved on the drainage tube connecting section (511);
when the runner joint locking seat (530) is locked on the runner butt joint hole (150), the connecting hole placing section (512) can be limited between the insertion end of the runner joint locking seat (530) and the hole bottom of the runner butt joint hole (150), and a gap between the peripheral surface of the drainage tube connecting section (511) and the hole wall of the runner butt joint hole (150) is sealed.
9. The flowmeter metrology parameter detection system of claim 8, wherein: the runner butt-joint hole (150) comprises a screw hole, an insertion hole and a shaft sealing hole which are sequentially communicated from outside to inside in the axial direction, wherein the shaft sealing hole is in a circular truncated cone shape, the front end of the connecting hole insertion section (512) is provided with a circular truncated cone-shaped first shaft sealing surface matched with the shaft seal hole, the front end of the connecting hole insertion section (512) is inserted into the shaft seal hole, the first shaft sealing surface is attached to the shaft seal hole and is axially compressed, the middle part of the connecting hole insertion section (512) is inserted into the insertion hole, and the tail part of the connecting hole insertion section (512) is positioned in the screw hole;
runner joint locking seat (530) include screw section (532) that hexagonal nut section (531) and screw phase suit that connect gradually along the axial has run through on runner joint locking seat (530) and has connect mounting hole (533), runner joint locking seat (530) sealed cover is established on drainage tube linkage segment (511), screw section (532) screw thread is located soon in the screw, screw section (532) with the afterbody axial of section (512) is put into to the connecting hole supports tightly.
10. The flowmeter metrology parameter detection system of claim 9, wherein: a second shaft cover in a circular truncated cone shape is arranged at the tail end of the connecting hole embedding section (512), a circular truncated cone-shaped axial pressing surface matched with the second shaft cover is arranged in the joint mounting hole (533), and the axial pressing surface and the second shaft cover are axially pressed;
a first radial sealing groove is further annularly arranged in the middle of the connecting hole embedding section (512), a first sealing ring is arranged in the first radial sealing groove, and the first sealing ring is tightly attached to the inner wall of the embedding hole.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115900870A (en) * | 2022-12-30 | 2023-04-04 | 海默新宸水下技术(上海)有限公司 | Multi-channel metering flowmeter and metering method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115900870A (en) * | 2022-12-30 | 2023-04-04 | 海默新宸水下技术(上海)有限公司 | Multi-channel metering flowmeter and metering method |
| CN115900870B (en) * | 2022-12-30 | 2025-08-15 | 海默新宸水下技术(上海)有限公司 | Multichannel metering flowmeter and flow metering method |
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