CN113123743B - A self-balancing reversing control valve and a reversing device - Google Patents
A self-balancing reversing control valve and a reversing device Download PDFInfo
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- CN113123743B CN113123743B CN202110537945.7A CN202110537945A CN113123743B CN 113123743 B CN113123743 B CN 113123743B CN 202110537945 A CN202110537945 A CN 202110537945A CN 113123743 B CN113123743 B CN 113123743B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/106—Valve arrangements outside the borehole, e.g. kelly valves
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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Abstract
本发明提供了一种自平衡换向控制阀及换向装置，属于油田生产中控制冲砂液流向的工具领域，主要解决了现有阀门组操作繁琐，设备容易憋压的技术问题。该自平衡换向控制阀，包括阀体，所述阀体上设有出水口和进水口，所述阀体内部设有换向装置和平衡装置，通过改变所述换向装置在所述阀体内部的位置，能够改变所述阀体上与所述进水口连通的出水口；通过改变所述平衡装置的位置能够改变所述换向装置的位置，并使所述换向装置保持在使某一出水口与所述进水口连通的位置；所述阀体上还设有能够驱动所述平衡装置改变位置的操作部。本发明的自平衡换向控制阀，只需要改变操作部位置一个动作，就可以完成控制冲砂液的流向的效果，消除了因操作动作不协调导致设备憋压的问题。
The present invention provides a self-balancing reversing control valve and a reversing device, which belong to the field of tools for controlling the flow direction of sand flushing fluid in oil field production, and mainly solve the technical problems that the existing valve group is cumbersome to operate and the equipment is easy to be pressurized. The self-balancing reversing control valve includes a valve body, and the valve body is provided with a water outlet and a water inlet. The valve body is provided with a reversing device and a balancing device. By changing the position of the reversing device inside the valve body, the water outlet connected to the water inlet on the valve body can be changed; by changing the position of the balancing device, the position of the reversing device can be changed, and the reversing device can be kept in a position that connects a certain water outlet with the water inlet; the valve body is also provided with an operating part that can drive the balancing device to change its position. The self-balancing reversing control valve of the present invention can complete the effect of controlling the flow direction of the sand flushing fluid by only changing the position of the operating part, eliminating the problem of equipment pressure buildup due to uncoordinated operating actions.
Description
Technical Field
The invention relates to a tool for controlling the flow direction of sand washing liquid in the sand washing process of oilfield production, in particular to a self-balancing reversing control valve and a reversing device.
Background
In the continuous sand washing process of oil field oil well workover operation, the tool for controlling the flow direction of sand washing liquid on the ground which is commonly used at present is a valve group which is provided with more than three valves and a manifold, and when the flow direction of the sand washing liquid is controlled, more than two valves in the valve group are required to be synchronously opened and closed so as to complete the action of controlling the flow direction of the sand washing liquid. If the actions are not coordinated, the pressure is easy to be generated, and when the pressure is seriously suppressed, the hose or the high-pressure rubber tube can burst.
Therefore, on the basis of ensuring timely and accurate reversing effect, the design of the reversing device with simple operation is an important technical problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide a self-balancing reversing control valve, which solves the technical problems that the existing valve group is complex in operation and equipment is easy to hold pressure.
The invention provides a self-balancing reversing control valve, which comprises a valve body, wherein the valve body is provided with a water outlet and a water inlet, and the number of the water outlets is at least two;
the position of the reversing device can be changed by changing the position of the balancing device, the reversing device is kept at a position where a certain water outlet is communicated with the water inlet, and the valve body is also provided with an operation part capable of driving the balancing device to change the position.
Preferably, the valve body comprises a first channel and a second channel, the reversing device is arranged in the first channel, the balancing device is arranged in the second channel, the water outlet is communicated with the first channel, and the first channel and the second channel are both communicated with the water inlet;
the reversing device comprises a reversing rod, and a stress application part and a reversing part are arranged on the peripheral surface of the reversing rod;
the first channel sequentially comprises a wide-diameter section, a sealing section and a narrow-diameter section, the aperture of the sealing section is matched with the outer diameter of the reversing rod, the apertures of the wide-diameter section and the narrow-diameter section are both larger than the outer diameter of the reversing rod, the outer diameter of the stress application part is matched with the aperture of the wide-diameter section, and the outer diameter of the reversing part is matched with the aperture of the narrow-diameter section;
When the reversing rod is arranged in the first channel, the stress application part is positioned on the wide-diameter section, the reversing part is positioned on the narrow-diameter section, and the sealing section is matched with the reversing rod, so that liquid circulation between the wide-diameter section and the narrow-diameter section can be prevented;
The combined force of the liquid pressure born by the stress application part and the liquid pressure born by the reversing part can drive the reversing rod to move along the length direction of the first channel, the valve body is also provided with a limiting part of the reversing rod, and the reversing rod can be balanced and maintained at a fixed position under the action of the combined force and the limiting part.
Preferably, the water outlet comprises a first water outlet and a second water outlet, and the projection position of the water inlet on the valve body is positioned between the two projection positions of the water outlet;
the water inlet and the two water outlets are communicated with the narrow-diameter section of the first channel;
When the reversing flashboard is positioned between the water inlet and the water outlet II, the liquid entering the narrow-diameter section from the water inlet can flow out of the water outlet I;
when the reversing flashboard is positioned between the water inlet and the first water outlet, the liquid entering the narrow-diameter section from the water inlet can flow out of the second water outlet.
Preferably, the valve body is provided with a fixed reversing hole for communicating the wide-diameter section with the second channel;
The balance device is internally provided with a water inlet channel and a water drainage channel, the water inlet channel is communicated with one side of the channel II, which faces the water inlet, the water drainage channel is communicated with one side of the channel II, which is far away from the water inlet, the water inlet channel is provided with a movable reversing hole, and the water drainage channel is provided with a pressure relief hole;
when the movable reversing hole corresponds to the fixed reversing hole, liquid can enter the wide-diameter section from the water inlet, the second channel, the water inlet channel, the movable reversing hole and the fixed reversing hole in sequence; when the pressure relief hole corresponds to the fixed reversing hole, liquid can enter the other side of the second channel from the wide-diameter section, the fixed reversing hole, the pressure relief hole and the drainage channel in sequence for pressure relief.
The pressure relief hole comprises a pressure relief hole I and a pressure relief hole II, wherein the pressure applying part is positioned between the fixed reversing hole I and the fixed reversing hole II and divides the wide-diameter section into two sections;
When the position of the balancing device in the second channel is changed, and the first movable reversing hole corresponds to the first fixed reversing hole, the second fixed reversing hole corresponds to the second pressure relief hole, liquid can enter a section of the wide-diameter section corresponding to the first fixed reversing hole, and the liquid of the wide-diameter section corresponding to the second section of the fixed reversing hole can be discharged from the pressure relief Kong Erliu;
when the second movable reversing hole corresponds to the second fixed reversing hole and the first fixed reversing hole corresponds to the first pressure relief hole, liquid can enter a section of the wide-diameter section corresponding to the second fixed reversing hole, and the liquid in the section of the wide-diameter section corresponding to the first fixed reversing hole can flow out of the pressure relief hole for pressure relief.
Preferably, when the liquid enters the wide-diameter section from the first fixed reversing hole, the resultant force can drive the reversing rod to move and enable the reversing flashboard to be positioned between the water inlet and the second water outlet;
when liquid enters the wide-diameter section from the fixed reversing hole II, the resultant force can enable the reversing flashboard to be positioned between the water inlet and the water outlet I.
Preferably, a pressure relief structure is further arranged in the narrow-diameter section, and when liquid enters from the water inlet and flows out from the first water outlet, the liquid between the reversing flashboard and the second water outlet can flow out from the pressure relief structure for pressure relief;
When liquid enters from the water inlet and flows out from the water outlet II, the liquid between the reversing flashboard and the water outlet I can flow out from the pressure relief structure for pressure relief.
Preferably, the pressure relief structure comprises a pore canal structure which is arranged on the valve body, the reversing rod and the balancing device and can be used for communicating the valve body with an external low-pressure environment.
Preferably, the reversing rod is a reversing piston connecting rod, and the force applying part and the reversing part are respectively a force applying piston and a reversing flashboard which are arranged on the reversing piston connecting rod;
The end part of the first channel, which is positioned at the narrow-diameter section, is provided with a connecting rod seat, the connecting rod seat can seal the end part of the first channel, and the reversing piston connecting rod penetrates through the connecting rod seat and can move relative to the connecting rod seat;
a dust cap is arranged at the other end part of the first channel and positioned on the wide-diameter section, and the dust cap can seal the end part of the first channel;
and the outlet end of the second channel, which is far away from one side of the water inlet, is also provided with a detachable balance plug.
The invention also provides a reversing device, which comprises the self-balancing reversing control valve, a low-pressure pipeline arranged on the valve body of the self-balancing reversing control valve, and pipeline connectors arranged on the water inlet and the water outlet.
The invention has the beneficial effects that:
The self-balancing reversing control valve can control the flow direction of the sand washing liquid only by changing the position of the operation part by one action. The accident occurrence of explosion caused by the pressure holding caused by the uncooled operation action or the pressure holding of a hose or a high-pressure rubber tube is thoroughly eliminated. The effect of high-efficiency safe control is achieved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a reversing device in the state that liquid flows out from the water hole in the embodiment;
FIG. 2 is a schematic view of the structure of the reversing device in the state that the liquid flows out from the water hole in the embodiment;
fig. 3 is a schematic structural view of the reversing device when the reversing flashboard is positioned at the water inlet in the embodiment.
In the figure, 1, a reversing piston connecting rod; 2, a connecting rod seat, 3, a balance plug, 4, a valve body, 5, a balance device, 6, a boosting piston, 7, a reversing handle, 8, a low-pressure pipeline, 9, a first water outlet, 10, a water inlet, 11, a second water outlet, 12, a dust cap, 13, a pipeline connector, 14 and a reversing flashboard;
21. fixed reversing hole, 22, moving reversing hole, 23, pressure relief hole, 24, pressure relief port, 25, first channel, 26, second channel, 27, third channel, 28 and fourth channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Example 1
The embodiment provides a self-balancing reversing control valve, which comprises a valve body 4, wherein the valve body 4 is provided with water outlets and water inlets 10, the number of the water outlets is at least two, and the water outlets with different numbers and positions can be selected according to actual needs so as to meet the change of sand washing liquid in different directions, a reversing device and a balancing device 5 are arranged in the valve body 4, the valve body 4 is provided with an operating part connected with the balancing device 5, the position of the balancing device 5 is changed through the operating part, and then the position of the reversing device in the valve body 4 is changed, so that the water outlets which are communicated with the water inlets 10 on the valve body 4 can be changed, and the effect of liquid outflow reversing is realized.
Through the self-balancing reversing control valve of the embodiment, a worker can finish reversing operation only by controlling the operation part on the valve body 4, the operation is simple, the problem of pressure holding of equipment caused by uncoordinated operation is effectively solved, the occurrence of burst accidents caused by pressure holding of a hose or a high-pressure rubber tube is effectively avoided, and the efficient and safe control effect is realized.
In this embodiment, the valve body 4 includes a first channel and a second channel, the reversing device is disposed in the first channel, the balancing device 5 is disposed in the second channel, the water outlet is communicated with the first channel, and both the first channel and the second channel are communicated with the water inlet 10.
The reversing device comprises a reversing rod, wherein a force application part and a reversing part are arranged on the peripheral surface of the reversing rod, the reversing rod is a reversing piston connecting rod 1 in the embodiment, the force application part and the reversing part are a force application piston 6 and a reversing flashboard 14 which are arranged on the reversing piston connecting rod 1 respectively, and the force application piston 6 and the reversing flashboard 14 are fixedly connected with the reversing piston connecting rod 1 and synchronously move.
The first channel sequentially comprises a wide-diameter section, a sealing section and a narrow-diameter section, the aperture of the sealing section is matched with the outer diameter of the reversing piston connecting rod 1, the apertures of the wide-diameter section and the narrow-diameter section are both larger than the outer diameter of the reversing piston connecting rod 1, the outer diameter of the stressing piston 6 is matched with the aperture of the wide-diameter section, and the outer diameter of the reversing flashboard 14 is matched with the aperture of the narrow-diameter section.
The end part of the valve body 4, which is positioned at the narrow diameter section, is provided with a connecting rod seat 2, the reversing piston connecting rod 1 penetrates through the connecting rod seat 2 and can move relative to the connecting rod seat 2, the other end part of the valve body 4, which is positioned at the wide diameter section, is provided with a dustproof cap 12, the connecting rod seat 2 and the dustproof cap 12 respectively seal two ends of the first channel, the end part of the second channel, which is far away from the water inlet 10, is also provided with a detachable balance plug 3, and the balance plug 3 can play a role of sealing one end of the second channel.
Because the radial area of the boost piston 6 is larger than that of the self-balancing reversing control valve plate, when the liquid pressures born by the boost piston 6 and the boost piston are the same in the first channel, the liquid pressure in the axial direction born by the boost piston 6 is larger than that of the self-balancing reversing control valve plate, when the pressure directions of the boost piston and the boost piston are different, the resultant force of the two pressures is the pressure difference of the two pressures, and when the pressure directions of the boost piston and the boost piston are consistent, the resultant force is the sum of the pressures of the two pressures, but the resultant force direction is always the stress direction of the boost piston 6. The reversing piston connecting rod 1 can move according to the direction of the resultant force until the resistance of the limiting part is met or the resultant force disappears, stops moving and is maintained at the stressed balance position, and when the direction of the resultant force is changed, the moving direction of the reversing piston connecting rod 1 is changed and is static at the position capable of maintaining balance again. In this embodiment, the limiting portion may be the connecting rod seat 2 on the left side of the channel, or may be the dust cap 12 on the right side, or may be the protruding limiting structures disposed on the reversing piston connecting rod 1 and located on the left side and the right side of the sealing section, so as to prevent the reversing piston connecting rod 1 from continuing to move rightward or leftward.
In this embodiment, two water outlets are taken as an example, namely, a first water outlet 9 and a second water outlet 11, the two water outlets are located on one side of the valve body 4 and are located on one side close to the first channel, the water inlet 10 is located on the opposite side of the valve body 4 and is located on one side close to the second channel, the water inlet 10 is simultaneously communicated with the first channel and the second channel, and the projection position of the water inlet 10 is located between the positions of the two water outlets.
When the reversing piston connecting rod 1 is arranged in the first channel, the stressing piston 6 is positioned in the wide-diameter section, the wide-diameter section is divided into two sections, the reversing flashboard 14 is positioned in the narrow-diameter section, the narrow-diameter section is divided into two sections, the sealing section is matched with the reversing piston connecting rod 1, and the sealing section can not only prevent liquid circulation between the wide-diameter section and the narrow-diameter section, but also play a role in supporting the reversing piston connecting rod 1;
When the reversing flashboard 14 is positioned between the water inlet 10 and the water outlet 9, the reversing flashboard 14 can obstruct the communication between the water inlet 10 and the water outlet 9, the liquid entering the narrow-diameter section from the water inlet 10 can flow out of the water outlet 11, and the liquid between the reversing flashboard 14 and the water outlet 11 flows out and is decompressed through the decompression structure. When the reversing flashboard 14 is positioned between the water inlet 10 and the water outlet two 11, the reversing flashboard 14 can obstruct the communication between the water inlet 10 and the water outlet two 11, the liquid entering the narrow-diameter section from the water inlet 10 can flow out of the water outlet one 9, and the liquid between the reversing flashboard 14 and the water outlet one 9 flows out and is decompressed through the decompression structure.
Specifically, the pressure relief structure for allowing the pressure relief of the inner partition section of the narrow-diameter section in the embodiment comprises a first pore canal 25 arranged in a section, close to the water outlet I9, in the first channel, and a second pore canal 26 arranged in a section, close to the water outlet II 11, in the first channel, and further comprises a third pore canal 27 and a fourth pore canal 28 which are respectively arranged on the reversing piston connecting rod 1 and correspond to the first pore canal 25 and the second pore canal 26, and the third pore canal 27 and the fourth pore canal 28 are respectively arranged along the length direction of the reversing piston connecting rod 1. The first duct 25 is arranged in the sealing section and can extend to the outside of the valve body 4, the third duct 27 can be communicated with the narrow-diameter section and the first duct 25, the dustproof cap 12 is provided with a containing groove which allows the end part of the reversing piston connecting rod 1 to be inserted, the opening size of the containing groove is matched with the outer diameter of the reversing piston connecting rod 1, but is smaller than the inner size of the containing groove, the second duct 26 is arranged in the containing groove of the dustproof cap 12 and can extend to the outside of the valve body 4, and the fourth duct 28 can be communicated with the narrow-diameter section and the containing groove.
In this embodiment, a water inlet channel and a water discharge channel are provided in the balancing device 5, a moving reversing hole 22 is provided on the water inlet channel, a pressure release hole 23 is provided on the water discharge channel, the water discharge channel and the pressure release hole 23 are part of the pressure release structure of the valve body 4, a fixed reversing hole 21 is provided between the wide diameter section of the first channel and the second channel, and when the moving reversing hole 22 corresponds to the fixed reversing hole 21, liquid can enter the wide diameter section of the first channel from the water inlet 10, the second channel, the water inlet channel, the moving reversing hole 22 and the fixed reversing hole 21 in sequence.
Specifically, the movable reversing hole 22 comprises a first movable reversing hole and a second movable reversing hole, the fixed reversing hole 21 comprises a first fixed reversing hole and a second fixed reversing hole, the pressure release hole 23 comprises a first pressure release hole and a second pressure release hole, and the displacement range of the stressing piston 6 along with the axial movement of the reversing piston connecting rod 1 is always between the first fixed reversing hole and the second fixed reversing hole;
When the position of the balancing device 5 in the second channel is changed, the first moving reversing hole corresponds to the first fixed reversing hole, the second fixed reversing hole corresponds to the second pressure releasing hole, the first pressure releasing hole and the second moving reversing hole are blocked, liquid can enter one side section (left side of the stressing piston 6 in the drawing) of the wide-diameter section from the fixed reversing hole 21, and the resultant force can drive the reversing piston connecting rod 1 to move and finally the reversing flashboard 14 is positioned between the water inlet 10 and the water outlet 11 (the state shown in fig. 1).
When the second movable reversing hole corresponds to the second fixed reversing hole, the first fixed reversing hole corresponds to the first pressure relief hole, the second pressure relief hole and the first movable reversing hole are blocked, liquid can enter the other side section (the right side of the stressing piston 6 in the figure) of the wide-diameter section from the second fixed reversing hole, and at the moment, the resultant force can enable the reversing flashboard 14 to be positioned between the water inlet 10 and the second water outlet 11. The liquid flowing out of the drainage channel can flow out of the valve body 4 through the pressure relief opening 24 on the second channel for pressure relief, and the pressure relief opening 24 also belongs to the pressure relief structure of the embodiment. (the state shown in FIG. 2)
In the self-balancing reversing control valve of the embodiment, through pulling the operation part in continuous circulation sand washing, the operation part in the embodiment is the reversing handle 7, the valve body 4 axially makes a leftward or rightward motion, so that the reversing flashboard 14 on the reversing piston connecting rod 1 and the stressing piston 6 on the reversing piston connecting rod axially make leftward or rightward motion on the valve body 4, balance can be realized under the combined action of liquid pressure and the limiting part, and finally, the flow direction reversing of sand washing liquid is realized, and the efficient and safe control effect is achieved.
Example 2
This embodiment provides a reversing device, as shown in fig. 1-3, comprising the self-balancing reversing control valve of embodiment 1, a low pressure pipeline 8 arranged on the self-balancing reversing control valve, and pipeline connectors arranged on the water inlet 10 and the water outlet. The low-pressure pipeline 8 is communicated with the pressure relief structures such as the pressure relief opening 24, the first pore canal 25, the second pore canal 26 and the like on the valve body 4, and unnecessary liquid pressure in the valve body 4 can be released through the pressure relief structures and the low-pressure pipeline 8, so that the valve body 4 or related pipelines are prevented from being damaged due to overlarge local pressure in the valve body 4.
The pipeline connector is a pipeline connector 13, so that the liquid circulation pipeline can be conveniently and quickly connected with the reversing device.
Example 3
In this embodiment, taking the case that the liquid needs to be changed from the second outlet 11 (in the state of fig. 2) to the first outlet 9 (in the state of fig. 1), the operation steps and the movement, balancing process and principle of the internal structure of the valve body 4 will be described in detail:
first, the operation portion is moved from the position in fig. 2 to the position in fig. 1, and the balancing device 5 is also moved from the position in fig. 2 to the position in fig. 1 according to the change in the position of the operation portion.
In this case, the position of the reversing piston connecting rod 1 in the first channel is not changed in time, and is still in the position in fig. 2, the liquid entering from the water inlet 10 still enters from the right side of the reversing gate plate 14, flows out from the second water outlet (the liquid flow track is the black thick solid line on the right side in fig. 2), the stress direction of the reversing gate plate 14 still is leftward, the left side of the reversing gate plate 14 can be finally communicated with the low-pressure pipeline 8 through the first channel 25 communicated with the third channel 27 (the liquid flow track is the black thick dashed line on the right side in fig. 2), and the fourth channel 28 is far away from the second channel 26 and cannot be communicated with the outside of the valve body 4.
In the wide diameter section, the liquid is discharged from the fixed reversing hole from the second side (the liquid flow path is a black thick solid line on the left side in fig. 2) to the left side (the liquid flow path is a black thick dashed line on the left side in fig. 2) of the stressing piston 6, changed into the fixed reversing hole from the first side (the liquid flow path is a black thick solid line on the left side in fig. 1) to the right side of the stressing piston 6, and discharged from the fixed reversing Kong Erliu (the liquid flow path is a black thick dashed line on the left side in fig. 1), and the stressing piston 6 is stressed from left to right. The resultant force on the reversing piston connecting rod 1 is changed into a pressure difference by the sum of the pressures exerted on the force piston 6 and the reversing gate 14, and the direction is changed from left to right.
Then, the reversing piston connecting rod 1 starts to move rightwards under the action of the pressure difference, when the reversing flashboard 14 moves to the position of the water inlet 10 (shown in fig. 3), liquid entering the narrow-diameter section can enter the two sides of the reversing flashboard 14 respectively, the third pore canal 27 is far away from the first pore canal 25 and is not communicated with the fourth pore canal 28 and the second pore canal 26, and at the moment, the pressure balance of the liquid at the two sides, which is received by the reversing flashboard 14, is realized, and the reversing piston connecting rod 1 still moves rightwards due to the pressure of the stressing piston 6.
Finally, when the reversing valve 14 moves to a position between the water inlet 10 and the water outlet two 11 (as shown in fig. 1), the liquid entering the narrow-diameter section from the water inlet 10 can only enter the left side of the reversing valve 14, flows out from the water outlet one 9 (the liquid flow track is a black thick solid line on the right side in fig. 1), realizes liquid reversing, the fourth 28 is closely communicated with the second 26, the liquid accumulated on the right side of the reversing valve 14 enters the accommodating groove through the fourth 28, then flows out and releases pressure through the second 26 (the liquid flow track is a black thick dashed line on the right side in fig. 1), at this time, the left side of the reversing valve 14 is stressed, the right side is stressed to zero through the pressure release, the resultant force of the reversing piston connecting rod 1 is changed into the sum of the pressures stressed on the stressing piston 6 and the reversing valve 14, and the direction is changed from right, and the reversing piston connecting rod 1 continues to move right until encountering the limiting part. At this time, the reversing piston rod 1 is balanced by the combined action of the rightward hydraulic pressure applied to the energizing piston 6 and the reversing gate 14 and the blocking pressure applied to the reversing piston rod 1 by the stopper portion to the left.
Example 4
When the liquid is required to flow out of the first water outlet 9 (the state of fig. 1) and flow out of the second water outlet 11 (the state of fig. 2), the balance principle of the movement of the internal structure of the valve body 4 is the same as that of the embodiment 3 only by moving the operation part from the position of fig. 1 to the position of fig. 2, and when the reversing device is in the state of fig. 2, the reversing piston connecting rod 1 is balanced under the combined action of the common left liquid pressure applied by the stressing piston 6 and the reversing flashboard 14 and the right blocking pressure applied by the limiting part.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (5)
1. The self-balancing reversing control valve is characterized by comprising a valve body (4), wherein the valve body (4) is provided with a water outlet and a water inlet (10), and the number of the water outlets is at least two, a reversing device and a balancing device (5) are arranged in the valve body (4), and the water outlet which is communicated with the water inlet (10) on the valve body (4) can be changed by changing the position of the reversing device in the valve body (4);
The position of the reversing device can be changed by changing the position of the balancing device (5), and the reversing device is kept at a position which enables a certain water outlet to be communicated with the water inlet (10), and an operation part which can drive the balancing device (5) to change the position is also arranged on the valve body (4);
the valve body (4) comprises a first channel and a second channel, the reversing device is arranged in the first channel, the balancing device (5) is arranged in the second channel, the water outlet is communicated with the first channel, and the first channel and the second channel are both communicated with the water inlet (10);
the reversing device comprises a reversing rod, and a stress application part and a reversing part are arranged on the peripheral surface of the reversing rod;
the first channel sequentially comprises a wide-diameter section, a sealing section and a narrow-diameter section, the aperture of the sealing section is matched with the outer diameter of the reversing rod, the apertures of the wide-diameter section and the narrow-diameter section are both larger than the outer diameter of the reversing rod, the outer diameter of the stress application part is matched with the aperture of the wide-diameter section, and the outer diameter of the reversing part is matched with the aperture of the narrow-diameter section;
When the reversing rod is arranged in the first channel, the stress application part is positioned on the wide-diameter section, the reversing part is positioned on the narrow-diameter section, and the sealing section is matched with the reversing rod, so that liquid circulation between the wide-diameter section and the narrow-diameter section can be prevented;
The combined force of the liquid pressure born by the stress application part and the liquid pressure born by the reversing part can drive the reversing rod to move along the length direction of the first channel, the valve body (4) is also provided with a limiting part of the reversing rod, and the reversing rod can be kept balanced and at a fixed position under the action of the combined force and the limiting part;
The operation part is a reversing handle (7);
the water outlet comprises a first water outlet (9) and a second water outlet (11), and the projection position of the water inlet (10) on the valve body (4) is positioned between the two water outlet projection positions;
the water inlet (10) and the two water outlets are communicated with the narrow-diameter section of the first channel;
when the reversing part (14) is positioned between the water inlet (10) and the water outlet II (11), the liquid entering the narrow-diameter section from the water inlet (10) can flow out of the water outlet I (9);
When the reversing part (14) is positioned between the water inlet (10) and the water outlet I (9), the liquid entering the narrow-diameter section from the water inlet (10) can flow out of the water outlet II (11);
the valve body (4) is provided with a fixed reversing hole (21) for communicating the wide-diameter section with the second channel;
a water inlet channel is arranged in the balancing device (5), the water inlet channel is communicated with one side of the channel II, which faces the water inlet (10), and a movable reversing hole (22) is formed in the water inlet channel;
When the movable reversing hole (22) corresponds to the fixed reversing hole (21), liquid can enter the wide-diameter section from the water inlet (10), the second channel, the water inlet channel, the movable reversing hole (22) and the fixed reversing hole (21) in sequence;
The movable reversing hole (22) comprises a first movable reversing hole and a second movable reversing hole, the fixed reversing hole (21) comprises a first fixed reversing hole and a second fixed reversing hole, and the stress application part is positioned between the first fixed reversing hole and the second fixed reversing hole and divides the wide-diameter section into two sections;
When the position of the balancing device (5) in the second channel is changed to enable the first movable reversing hole to correspond to the first fixed reversing hole, liquid can enter a section of the wide-diameter section corresponding to the first fixed reversing hole, and the liquid of the wide-diameter section corresponding to the second section of the fixed reversing hole is discharged and decompressed through a decompression structure;
When the second movable reversing hole corresponds to the second fixed reversing hole, liquid can enter a section corresponding to the second fixed reversing hole in the wide-diameter section, and the liquid in the section corresponding to the first fixed reversing hole in the wide-diameter section is discharged and decompressed through a decompression structure;
when liquid enters the wide-diameter section from the first fixed reversing hole, the resultant force can drive the reversing rod to move, and the reversing part (14) is positioned between the water inlet (10) and the second water outlet (11);
When liquid enters the wide-diameter section from the second fixed reversing hole, the resultant force can enable the reversing part (14) to be located between the water inlet (10) and the first water outlet (9).
2. The self-balancing reversing control valve according to claim 1, characterized in that when liquid enters from the water inlet (10) and flows out from the water outlet one (9), the liquid between the reversing part (14) and the water outlet two (11) can flow out and be depressurized through a depressurization structure;
When liquid enters from the water inlet (10) and flows out from the water outlet II (11), the liquid between the reversing part (14) and the water outlet I (9) can flow out and be decompressed through the decompression structure.
3. The self-balancing reversing control valve according to claim 2, wherein the valve body (4) is provided with a pressure relief structure, and the pressure relief structure comprises a pore canal structure which is arranged on the valve body (4), the reversing rod and the balancing device (5) and can be used for communicating the valve body (4) with an external low-pressure environment.
4. A self-balancing reversing control valve according to claim 3, characterized in that the reversing lever is a reversing piston connecting rod (1), the force applying part and the reversing part are a force applying piston (6) and a reversing gate plate arranged on the reversing piston connecting rod (1), respectively;
the end part of the first channel, which is positioned at the wide diameter section, is provided with a connecting rod seat (2), the connecting rod seat (2) can seal the end part of the first channel, and the reversing piston connecting rod (1) penetrates through the connecting rod seat (2) and can move relative to the connecting rod seat (2);
A dust cap (12) is arranged at the other end part of the first channel and positioned at the narrow-diameter section, and the dust cap (12) can seal the end part of the first channel;
the outlet end of the second channel far away from one side of the water inlet (10) is also provided with a detachable balance plug (3).
5. A reversing device comprising a self-balancing reversing control valve according to any one of claims 1-4, characterized by a low pressure line (8) arranged on the valve body (4) of the self-balancing reversing control valve, and a pipe connection arranged on the water inlet (10) and the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110537945.7A CN113123743B (en) | 2021-05-18 | 2021-05-18 | A self-balancing reversing control valve and a reversing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110537945.7A CN113123743B (en) | 2021-05-18 | 2021-05-18 | A self-balancing reversing control valve and a reversing device |
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| CN113123743A CN113123743A (en) | 2021-07-16 |
| CN113123743B true CN113123743B (en) | 2025-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110537945.7A Active CN113123743B (en) | 2021-05-18 | 2021-05-18 | A self-balancing reversing control valve and a reversing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116624115B (en) * | 2023-07-20 | 2023-09-22 | 海塔石油科技有限公司 | Horizontal well sand discharge double-circulation valve and use method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519562A (en) * | 2018-11-13 | 2019-03-26 | 河南宇宙流体科技有限公司 | A kind of intelligent reversing valve |
| CN215108825U (en) * | 2021-05-18 | 2021-12-10 | 辽宁华业能源技术服务有限公司 | Self-balancing reversing control valve and reversing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074419B1 (en) * | 1981-09-11 | 1986-01-08 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | High-power electric circuit breaker with a hydraulically operated actuating device |
| DE102012100453A1 (en) * | 2012-01-20 | 2013-07-25 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Controllable 3/2-way spool valve for hydraulic control unit for agricultural tool, has cylinder port that is connected with outer pressure ports by piston slide such that pressure ports are separated from each other in control position |
| CN204127387U (en) * | 2014-10-10 | 2015-01-28 | 杭州圣忆高科技有限公司 | Three-way diverter valve |
| CN106870496A (en) * | 2015-12-14 | 2017-06-20 | 邢筱丹 | Novel pump truck arm support balanced valve |
| CN212389797U (en) * | 2020-08-20 | 2021-01-22 | 浙江盾安人工环境股份有限公司 | Valve element assembly and reversing valve with same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519562A (en) * | 2018-11-13 | 2019-03-26 | 河南宇宙流体科技有限公司 | A kind of intelligent reversing valve |
| CN215108825U (en) * | 2021-05-18 | 2021-12-10 | 辽宁华业能源技术服务有限公司 | Self-balancing reversing control valve and reversing device |
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