CN113123743A - Self-balancing reversing control valve and reversing device - Google Patents
Self-balancing reversing control valve and reversing device Download PDFInfo
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- CN113123743A CN113123743A CN202110537945.7A CN202110537945A CN113123743A CN 113123743 A CN113123743 A CN 113123743A CN 202110537945 A CN202110537945 A CN 202110537945A CN 113123743 A CN113123743 A CN 113123743A
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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 invention provides a self-balancing reversing control valve and a reversing device, belonging to the field of tools for controlling the flow direction of sand flushing fluid in oilfield production, and mainly solves the technical problems that the existing valve group is complicated to operate and the equipment is easy to hold back pressure. The self-balancing reversing control valve includes a valve body, the valve body is provided with a water outlet and a water inlet, and a reversing device and a balancing device are arranged inside the valve body. By changing the position inside the valve body, the water outlet communicating with the water inlet 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 where a water outlet communicates with the water inlet; the valve body is also provided with an operation part capable of driving the balance device to change the position. The self-balancing reversing control valve of the present invention can complete the effect of controlling the flow direction of the sand flushing liquid only by changing the position of the operating part, and eliminates the problem of equipment pressure holding up due to uncoordinated operation actions.
Description
Technical Field
The invention relates to a tool for controlling the flow direction of a sand washing liquid in a sand washing procedure in oil field production, in particular to a self-balancing reversing control valve and a reversing device.
Background
In the continuous sand washing procedure of oil well workover operation, the currently commonly used tool for controlling the flow direction of sand washing liquid on the ground is a valve group consisting of more than three valves and a manifold, and when the flow direction of the sand washing liquid is controlled, more than two valves 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, pressure holding is easy to generate, and the water hose or the high-pressure rubber hose can burst when the pressure holding is serious.
Therefore, on the basis of ensuring timely and accurate reversing effect, the reversing device which is simple to operate is designed, and the technical problem to be solved by technical personnel in the field is solved.
Disclosure of Invention
The invention aims to provide a self-balancing reversing control valve, which solves the technical problems that the existing valve set is complex to operate and equipment is easy to suppress 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; a reversing device and a balancing device are arranged in the valve body, and a water outlet communicated with the water inlet on the valve body can be changed by changing the position of the reversing device in the valve body;
the position of the reversing device can be changed by changing the position of the balancing device, and the reversing device is kept at a position for communicating a certain water outlet with the water inlet; the valve body is also provided with an operating part which can drive 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 force application part and a reversing part are arranged on the circumferential 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 force application part is positioned at the wide diameter section, the reversing part is positioned at the narrow diameter section, and the sealing section is matched with the reversing rod and can prevent liquid from flowing between the wide diameter section and the narrow diameter section;
the combined force of the liquid pressure borne by the force application part and the liquid pressure borne by the reversing part can drive the reversing rod to move along the length direction of the first channel, the valve body is further provided with a limiting part of the reversing rod, and the reversing rod can keep balance and be 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 located between the projection positions of the two water outlets;
the water inlet and the two water outlets are communicated with the narrow-diameter section of the first channel;
when the reversing gate plate is positioned between the water inlet and the second water outlet, liquid entering the narrow-diameter section from the water inlet can flow out of the first water outlet;
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 from 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;
a water inlet channel and a water drainage channel are arranged in the balancing device, the water inlet channel is communicated with one side, facing the water inlet, of the second channel, the water drainage channel is communicated with one side, away from the water inlet, of the second channel, a movable reversing hole is formed in the water inlet channel, and a pressure relief hole is formed in the water drainage channel;
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 for pressure relief from the wide-diameter section, the fixed reversing hole, the pressure relief hole and the drainage channel in sequence.
Preferably, the movable reversing hole comprises a first movable reversing hole and a second movable reversing hole; the fixed reversing hole comprises a fixed reversing hole I and a fixed reversing hole II; the pressure relief hole comprises a first pressure relief hole and a second pressure relief hole; 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 in the channel II is changed, so that the first movable reversing hole corresponds to the first fixed reversing hole, and the second fixed reversing hole corresponds to the pressure relief hole, liquid can enter a section, corresponding to the first fixed reversing hole, in the wide-diameter section, and the liquid, corresponding to the second section of the fixed reversing hole, in the wide-diameter section can flow out of the pressure relief hole for pressure relief;
when the movable reversing hole II corresponds to the fixed reversing hole II and the fixed reversing hole I corresponds to the pressure relief hole, liquid can enter a section corresponding to the fixed reversing hole II in the wide-diameter section, and the liquid in the section corresponding to the fixed reversing hole I in the wide-diameter section can flow out of the pressure relief hole for pressure relief.
Preferably, when 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 gate plate to be located between the water inlet and the water outlet;
when liquid enters the wide-diameter section from the second fixed reversing hole, the resultant force can enable the reversing gate plate to be located between the water inlet and the first water outlet.
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 gate plate and the second water outlet can flow out of the pressure relief structure to relieve pressure;
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 structure which is arranged on the valve body, the reversing rod and the balancing device and can be communicated with the valve body and an external low-pressure environment.
Preferably, the reversing rod is a reversing piston connecting rod, and the force application part and the reversing part are respectively a force application piston and a reversing flashboard which are arranged on the reversing piston connecting rod;
a connecting rod seat is arranged at the end part of the narrow-diameter section on the first channel and 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 of the first channel, which is positioned at the wide-diameter section, and the dust cap can seal the end of the first channel;
and a detachable balance plug is arranged at the outlet end of the second channel far away from one side of the water inlet.
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 a pipeline connecting piece arranged on the water inlet and the water outlet.
The invention has the beneficial effects that:
the self-balancing reversing control valve can complete the effect of controlling the flow direction of the sand washing liquid by only changing the position of the operation part. The accident that the pressure building or the water hose or the high-pressure rubber hose bursts due to the pressure building caused by the uncoordinated operation action is completely eliminated. The effect of high-efficient safe control has been reached.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a reversing device in a state that liquid flows out of the water hole in the embodiment;
FIG. 2 is a schematic structural view of the reversing device in a state where the liquid flows out of the water hole in the embodiment;
FIG. 3 is a schematic view of the diverter device in the embodiment with the diverter blade in the inlet position.
In the figure: 1. a reversing piston connecting rod; 2. a connecting rod seat; 3. balanced blocking; 4. a valve body; 5. a balancing device; 6. a boost piston; 7. a reversing handle; 8. a low pressure line; 9. a first water outlet; 10. a water inlet; 11. a water outlet II; 12. a dust cap; 13. a pipe joint; 14. a reversing gate plate;
21. fixing a reversing hole; 22. moving the reversing hole; 23. a pressure relief vent; 24. a pressure relief port; 25. a first pore channel; 26. a second pore channel; 27. a third pore passage; 28. and a pore canal IV.
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 is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
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 at least two water outlets and water inlets 10, and the water outlets with different numbers and positions can be selected according to actual needs so as to meet the requirement of changing the sand washing liquid in different directions; inside switching-over device and the balancing unit 5 of being equipped with of valve body 4, be equipped with the operation portion of being connected with balancing unit 5 on the valve body 4, change balancing unit 5's position through the operation portion, and then change the switching-over device in the inside position of valve body 4 to the realization can change the delivery port with water inlet 10 intercommunication on the valve body 4, realizes the effect of liquid outflow switching-over.
Through the self-balancing switching-over control valve of this embodiment, the operation of switching-over can be accomplished to the staff only need through the operation portion on the control valve body 4, and easy operation has effectively solved because of the equipment pressure build-up problem that the action of operation discordance leads to, has effectively avoided water hose or high-pressure rubber tube to lead to the emergence of the accident that bursts because of the pressure build-up, has realized the effect of high-efficient safe control.
In the specific embodiment, 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, the peripheral surface of the reversing rod is provided with a force application part and a reversing part, and the reversing rod is a reversing piston connecting rod 1 in the embodiment; the boosting part and the reversing part are respectively a boosting piston 6 and a reversing flashboard 14 which are arranged on the reversing piston connecting rod 1; the boosting piston 6 and the reversing gate plate 14 are fixedly connected with the reversing piston connecting rod 1 and move synchronously.
The first passage comprises a wide diameter section, a sealing section and a narrow diameter section in sequence, 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 boosting 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.
A connecting rod seat 2 is arranged at the end part of the narrow diameter section on the valve body 4, 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 dustproof cap 12 is arranged at the other end of the wide-diameter section of the valve body 4, and the connecting rod seat 2 and the dustproof cap 12 respectively seal two ends of the first channel; the end part of the outlet far away from the water inlet 10 on the second channel is also provided with a detachable balance plug 3, and the balance plug 3 can play a role in sealing one end of the second channel.
Because the radial area of the boosting piston 6 is larger than the self-balancing reversing control valve plate, when the two pressures of the liquid borne by the boosting piston 6 in the first channel are the same, the pressure of the liquid borne by the boosting piston 6 in the axial direction is larger than the self-balancing reversing control valve plate, when the two pressures of the liquid borne by the boosting piston are different in direction, the resultant force of the two pressures is the difference of the pressures of the two pressures, when the two pressures of the two pressures are consistent in direction, the resultant force is the sum of the pressures of the two pressures, but the direction of the resultant force is always the stress. 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, the reversing piston connecting rod stops moving and is maintained at the stress balance position, and when the direction of the resultant force changes, the movement direction of the reversing piston connecting rod 1 changes, and the reversing piston connecting rod is static at the position where the balance can be maintained again. In this embodiment, the limiting portion may be the connecting rod seat 2 on the left side of the first passage, or the dust cap 12 on the right side, or a protruding limiting structure arranged on the left side and the right side of the sealing section on the reversing piston connecting rod 1, so that the reversing piston connecting rod 1 can be prevented from moving right or left.
In this embodiment, taking the situation of two water outlets as an example, the two water outlets are respectively a first water outlet 9 and a second water outlet 11, the two water outlets are located at one side of the valve body 4 and are close to one side of the first channel, the water inlet 10 is located at the opposite side of the valve body 4, that is, at one side close to the second channel, and the water inlet 10 is simultaneously communicated with the first channel and the second channel; and the projected 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 force application piston 6 is positioned in the wide-diameter section, the wide-diameter section is divided into two sections, the reversing gate plate 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 between the wide-diameter section and the narrow-diameter section from flowing, but also play a role in supporting the reversing piston connecting rod 1;
the water inlet 10 and the two water outlets are communicated with the narrow-diameter section; when the reversing flashboard 14 is positioned between the water inlet 10 and the water outlet I9, the reversing flashboard 14 can block the communication between the water inlet 10 and the water outlet I9, and liquid entering the narrow-diameter section from the water inlet 10 can flow out from the water outlet II 11; and the liquid between the reversing flashboard 14 and the second water outlet 11 flows out for pressure relief through the pressure relief structure. When the reversing flashboard 14 is positioned between the water inlet 10 and the second water outlet 11, the reversing flashboard 14 can block the communication between the water inlet 10 and the second water outlet 11, and liquid entering the narrow-diameter section from the water inlet 10 can flow out from the first water outlet 9; and the liquid between the reversing flashboard 14 and the first water outlet 9 flows out for pressure relief through the pressure relief structure.
Specifically, the pressure relief structure allowing the pressure relief of the inner section of the narrow-diameter section in this example includes: the reversing piston connecting rod comprises a first pore passage 25 arranged in a section, close to the water outlet I9, in the channel I, and a second pore passage 26 arranged in a section, close to the water outlet II 11, in the channel I, and further comprises a third pore passage 27 and a fourth pore passage 28 which are arranged on the reversing piston connecting rod 1 and respectively correspond to the first pore passage 25 and the second pore passage 26, wherein the third pore passage 27 and the fourth pore passage 28 are arranged along the length direction of the reversing piston connecting rod 1. The first pore channel 25 is arranged in the sealing section and can extend to the outside of the valve body 4, and the third pore channel 27 can communicate the narrow-diameter section with the first pore channel 25; dustproof cap 12 has the holding tank that allows switching-over piston connecting rod 1 tip to insert, and the opening size of holding tank matches with the external diameter of switching-over piston connecting rod 1, but is little than holding inslot portion size, and second 26 settings in the holding tank of dustproof cap 12 and can extend to the valve body 4 outside, and fourth 28 settings in pore can communicate narrow footpath section and holding tank.
In this embodiment, a water inlet channel and a water outlet channel are arranged in the balancing device 5, the water inlet channel is provided with a movable reversing hole 22, and the water outlet channel is provided with a pressure relief hole 23; the drainage channel and the pressure relief hole 23 are both part of the pressure relief structure of the valve body 4, and a communicated fixed reversing hole 21 is arranged between the wide-diameter section of the first channel and the second channel; when the movable 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 movable reversing hole 22 and the fixed reversing hole 21 in sequence.
Specifically, the movable reversing hole 22 includes a movable reversing hole i and a movable reversing hole ii; the fixed reversing hole 21 comprises a fixed reversing hole I and a fixed reversing hole II; the pressure relief hole 23 comprises a first pressure relief hole and a second pressure relief hole; the displacement range of the boosting piston 6 moving along with the reversing piston connecting rod 1 along the axial direction is always between the fixed reversing hole I and the fixed reversing hole II;
when the position of the balancing device 5 in the channel II is changed, the first movable reversing hole corresponds to the first fixed reversing hole, the second fixed reversing hole corresponds to the second pressure relief hole, and the first pressure relief hole and the second movable reversing hole are blocked, liquid can enter a section on one side of the wide-diameter section from the first fixed reversing hole 21 (the left side of the boosting piston 6 in the drawing); the resultant force can drive the reversing piston rod 1 to move and finally make the reversing gate 14 located between the water inlet 10 and the water outlet 11 (the state shown in fig. 1).
When the movable reversing hole II corresponds to the fixed reversing hole II, the fixed reversing hole I corresponds to the pressure relief hole I, and the pressure relief hole II and the movable reversing hole I are blocked, liquid can enter the other side section of the wide-diameter section (the right side of the forcing piston 6 in the drawing) from the fixed reversing hole II; at this time, the resultant force can make the reversing gate plate 14 located between the water inlet 10 and the water outlet 11. The liquid that flows out from the drainage channel can flow out valve body 4 pressure release through pressure release mouth 24 on the second passageway, and pressure release mouth 24 also belongs to the pressure release structure of this embodiment. (the state shown in FIG. 2)
The self-balancing reversing control valve of the embodiment is characterized in that the operation part is pulled in continuous circulating sand washing, the operation part is the reversing handle 7 in the embodiment, the valve body 4 axially moves leftwards or rightwards, the reversing gate plate 14 and the force application piston 6 on the reversing piston connecting rod 1 and on the reversing piston connecting rod are moved leftwards or rightwards in the axial direction of the valve body 4, balance can be realized under the combined action of liquid pressure and the limiting part, the flow direction reversing of sand washing liquid is finally realized, and the effect of efficient and safe control is achieved.
Example 2
The embodiment provides a reversing device, which comprises a self-balancing reversing control valve and a low-pressure pipeline 8 arranged on the self-balancing reversing control valve in the embodiment 1, and pipeline connectors arranged on a water inlet 10 and a water outlet, as shown in fig. 1 to 3. The low-pressure pipeline 8 is communicated with pressure relief structures such as a pressure relief opening 24, a first pore channel 25, a second pore channel 26 and the like on the valve body 4, unnecessary liquid pressure in the valve body 4 can be released through the pressure relief structures and the low-pressure pipeline 8, and the valve body 4 or related pipelines are prevented from being damaged due to overlarge local pressure in the valve body 4.
The pipeline connecting piece is a pipeline joint 13, and a liquid circulation pipeline can be conveniently and quickly connected with the reversing device.
Example 3
The embodiment takes the example that the liquid flowing out from the second water outlet 11 (the state of fig. 2) needs to be changed into the liquid flowing out from the first water outlet 9 (the state of fig. 1), and the operation steps and the movement, the balancing process and the principle of the internal structure of the valve body 4 are 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 in accordance with the change in the position of the operation portion.
At this time, in the narrow-diameter section, the position of the reversing piston connecting rod 1 in the first channel is not changed in time and is still at the position in fig. 2, liquid entering from the water inlet 10 still enters from the right side of the reversing gate plate 14 and flows out from the water outlet II (the liquid flow track is a black thick solid line on the right side in fig. 2), the force direction of the reversing gate plate 14 is still leftward, and the left side of the reversing gate plate 14 can be finally communicated with the low-pressure pipeline 8 through a first channel 25 communicated with a third channel 27 (the liquid flow track is a black thick dotted line on the right side in fig. 2); the fourth port 28 is far away from the second port 26 and cannot be communicated with the outside of the valve body 4.
In the wide-diameter section, liquid enters the right side of the boosting piston 6 from the fixed reversing hole II (the liquid flow track is a black thick solid line on the left side in fig. 2) and flows out from the fixed reversing hole for pressure relief (the liquid flow track is a black thick dotted line on the left side in fig. 2), and then enters the left side of the boosting piston 6 from the fixed reversing hole I (the liquid flow track is a black thick solid line on the left side in fig. 1) and flows out from the fixed reversing hole for pressure relief (the liquid flow track is a black thick dotted line on the left side in fig. 1); the force direction of the forcing piston 6 changes from left to right. The magnitude of the resultant force on the reversing piston connecting rod 1 is changed into a pressure difference from the sum of the pressures applied on the boosting 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 gate plate 14 moves to the position of the water inlet 10 (as shown in fig. 3), liquid entering the narrow-diameter section can respectively enter two sides of the reversing gate plate 14, the third pore passage 27 is far away from the first pore passage 25 and is not communicated with the second pore passage 26, and the fourth pore passage 28 is far away from the second pore passage 26 and is not communicated with the first pore passage; at this time, the reversing gate 14 is balanced by the pressures of the two sides of the liquid, and the reversing piston rod 1 is still moved to the right by the pressure of the boosting piston 6.
Finally, when the reversing gate 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 gate 14, and flows out from the water outlet one 9 (the liquid flow trajectory is a black thick solid line on the right side in fig. 1) to realize liquid reversing, the pore channel four 28 is communicated with the pore channel two 26 in a close manner, the liquid accumulated on the right side of the reversing gate 14 enters the accommodating tank through the pore channel four 28, and then flows out for pressure relief (the liquid flow trajectory is a black thick dotted line on the right side in fig. 1) through the pore channel two 26, at this time, the left side of the reversing gate 14 is stressed, the right side is stressed through pressure relief and is zero, the magnitude of the resultant force of the reversing piston connecting rod 1 becomes the sum of the pressures stressed on the force application piston 6. At this time, the reversing piston rod 1 is balanced by the combined action of the rightward liquid pressure applied to the thrust piston 6 and the reversing gate 14 and the leftward blocking pressure applied to the reversing piston rod 1 by the stopper.
Example 4
When the liquid needs to flow out of the first water outlet 9 (the state of fig. 1) and change to 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 operating part from the position in fig. 1 to the position in fig. 2; when the reversing device is in the state shown in fig. 2, the reversing piston rod 1 is balanced by the combined action of the common leftward liquid pressure applied to the thrust piston 6 and the reversing gate 14 and the rightward blocking pressure applied to the stopper.
The above description is only for the specific 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 conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A self-balancing reversing control valve is characterized by comprising a valve body (4), wherein a water outlet and a water inlet (10) are formed in the valve body (4), 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 a 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); the valve body (4) is also provided with an operation part which can drive the balancing device (5) to change the position.
2. The self-balancing reversing control valve according to claim 1, wherein the valve body (4) comprises a first passage and a second passage, the reversing device is arranged in the first passage, the balancing device (5) is arranged in the second passage, the water outlet is communicated with the first passage, and the first passage and the second passage are both communicated with the water inlet (10);
the reversing device comprises a reversing rod, and a force application part and a reversing part are arranged on the circumferential 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 force application part is positioned at the wide diameter section, the reversing part is positioned at the narrow diameter section, and the sealing section is matched with the reversing rod and can prevent liquid from flowing between the wide diameter section and the narrow diameter section;
the valve body (4) is also provided with a limiting part of the reversing rod, and the reversing rod can keep balance and maintain a fixed position under the action of the resultant force and the limiting part.
3. The self-balancing reversing control valve according to claim 2, characterized in that 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 between the two projection positions of the water outlets;
the water inlet (10) and the two water outlets are communicated with the narrow-diameter section of the first channel;
when the reversing gate plate (14) is positioned between the water inlet (10) and the second water outlet (11), liquid entering the narrow-diameter section from the water inlet (10) can flow out of the first water outlet (9);
when the reversing gate plate (14) is positioned between the water inlet (10) and the first water outlet (9), liquid entering the narrow-diameter section from the water inlet (10) can flow out of the second water outlet (11).
4. The self-balancing reversing control valve according to claim 3, characterized in that the valve body (4) is provided with a fixed reversing hole (21) communicating the wide diameter section with the second passage;
a water inlet channel is arranged in the balancing device (5), the water inlet channel is communicated with one side, facing the water inlet (10), of the second channel, 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.
5. The self-balancing directional control valve of claim 4, wherein the shift directional orifice (22) includes a shift directional orifice one and a shift directional orifice two; the fixed reversing hole (21) comprises a first fixed reversing hole and a second fixed reversing hole; 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 channel II is changed, and the movable reversing hole I corresponds to the fixed reversing hole I, liquid can enter a section, corresponding to the fixed reversing hole I, in the wide-diameter section, and the liquid, corresponding to the section of the fixed reversing hole II, in the wide-diameter section 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, corresponding to the first section of the first fixed reversing hole, in the wide-diameter section is discharged and decompressed through a decompression structure.
6. The self-balancing directional control valve according to claim 5, wherein when liquid enters the wide diameter section from the fixed directional hole, the resultant force can drive the directional rod to move and position the directional shutter (14) between the water inlet (10) and the water outlet (11);
when liquid enters the wide-diameter section from the second fixed reversing hole, the resultant force can enable the reversing gate plate (14) to be located between the water inlet (10) and the first water outlet (9).
7. The self-balancing reversing control valve according to claim 6, wherein when liquid enters from the water inlet (10) and flows out from the first water outlet (9), the liquid between the reversing gate plate (14) and the second water outlet (11) can flow out for pressure relief through a pressure relief structure;
when liquid enters from the water inlet (10) and flows out from the water outlet II (11), the liquid between the reversing flashboard (14) and the water outlet I (9) can flow out for pressure relief through the pressure relief structure.
8. The self-balancing reversing control valve according to claim 7, wherein a pressure relief structure is arranged on the valve body (4), and the pressure relief structure comprises a pore structure which is arranged on the valve body (4), the reversing rod and the balancing device (5) and can communicate the valve body (4) with an external low-pressure environment.
9. The self-balancing reversing control valve according to claim 8, wherein the reversing rod is a reversing piston connecting rod (1), and the boosting portion and the reversing portion are a boosting piston (6) and a reversing gate plate (14) which are arranged on the reversing piston connecting rod (1), respectively;
a connecting rod seat (2) is arranged at the end part of the narrow-diameter section on the first channel, 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 of the wide-diameter section of the first channel, and the dust cap (12) can seal the end of the first channel;
and a detachable balance plug (3) is arranged at the outlet end of the second channel far away from one side of the water inlet (10).
10. A reversing device comprising the self-balancing reversing control valve according to any one of claims 1 to 9, further comprising a low-pressure pipeline (8) arranged on the self-balancing reversing control valve body (4), and pipeline connectors 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN113123743A true CN113123743A (en) | 2021-07-16 |
| CN113123743B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624115A (en) * | 2023-07-20 | 2023-08-22 | 海塔石油科技有限公司 | Horizontal well sand discharge double-circulation valve and use method thereof |
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| 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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2021
- 2021-05-18 CN CN202110537945.7A patent/CN113123743B/en active Active
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| EP0074419A1 (en) * | 1981-09-11 | 1983-03-23 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | High-power electric circuit breaker with a hydraulically operated actuating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624115A (en) * | 2023-07-20 | 2023-08-22 | 海塔石油科技有限公司 | Horizontal well sand discharge double-circulation valve and use method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113123743B (en) | 2025-05-30 |
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