Oil and gas well pressure valve self-adaptive sealing device based on intelligent sensing technology

Abstract

The utility model discloses an oil-gas well pressure valve self-adaptive sealing device based on intelligent sensing technology, which relates to the technical field of oil-gas well pressure valves, and comprises a valve body and a valve plate arranged in the valve body, valve seats are arranged on both sides of the valve plate, the valve seats are fixedly arranged in the valve body, annular grooves are arranged on both sides of the two valve seats close to each other, and the annular grooves are communicated with the valve body. A pushing piston pipe is fixedly arranged at the upper end of the outer wall of the valve body, the end of the pushing piston pipe is communicated with an air inlet pipe, the air inlet pipe is communicated with the two sealing air bags, a pressure sensor is fixedly arranged at the upper end of the valve body, and the detection end of the pressure sensor penetrates into the valve body. An air inlet adjusting mechanism used for air inlet is arranged between the pressure sensor and the pushing piston pipe. When the pressure valve is used, air inlet of the sealing air bag can be controlled in real time according to the pressure of paint in an oil and gas well pipeline, and it is guaranteed that the sealing state between the sealing air bag and the valve plate can be changed in real time according to the pressure.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas well pressure valve technology, and specifically to an adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology. Background Technology

[0002] Pressure valves in oil and gas wells are key equipment used to control and regulate the pressure of oil and gas wells during oil and gas extraction. To ensure that the internal sealing components of the pressure valve can adjust according to the internal pressure of the oil and gas well, an adaptive device is set up to achieve adaptive sealing. For example, patent document CN218935326U discloses a sealing structure for an ultra-high pressure oil well gate valve. This sealing structure uses a first telescopic washer and a second telescopic washer to improve the sealing effect between the valve plate and the valve body and valve seat. When there is no high-pressure oil or gas in the valve body, the first and second telescopic washers are in a collapsed state, with a low degree of contact with the valve plate, i.e., low friction, which facilitates the movement and opening and closing of the valve plate. By setting up a pressure cylinder, when there is high-pressure oil or gas in the valve body, the pressure will push the piston upward, squeezing the gas in the pressure cylinder into the first and second telescopic washers, causing them to expand and fit tightly against the valve plate, ensuring the sealing effect between the valve plate and the valve body and valve seat, and achieving the purpose of self-adjustment and self-adaptation.

[0003] When adjusting the sealing, the above-mentioned sealing device can only strengthen the seal under higher pressure. It cannot quickly adjust the sealing effect of the sealing component according to real-time pressure changes, which reduces the sealing effect of the pressure valve. Utility Model Content

[0004] In view of the problems existing in the current adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology, which solves the problem that existing pressure valve sealing devices can only strengthen the sealing under higher pressure conditions and cannot quickly adjust the sealing effect of the sealing components according to real-time pressure changes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology includes a valve body and a valve plate disposed inside the valve body. Valve seats are provided on both sides of the valve plate and are fixedly disposed inside the valve body. An annular groove is provided on the side of the two valve seats that are close to each other, and a sealing airbag is fixedly disposed in the annular groove.

[0008] A push piston tube is fixedly provided on the upper end of the outer wall of the valve body. An air inlet pipe is connected to the end of the push piston tube. The air inlet pipe is connected to the two sealing airbags. A pressure sensor is fixedly provided on the upper end of the valve body. The detection end of the pressure sensor penetrates into the interior of the valve body. An air intake adjustment mechanism for air intake is provided between the pressure sensor and the push piston tube.

[0009] Preferably, the adjustable intake mechanism includes an installation cylinder, a first electromagnetic block is fixedly provided on the inner wall of the installation cylinder, a second electromagnetic block is contacted on the inner wall of the installation cylinder, a push rod is fixedly provided on the side wall of the second electromagnetic block, the end of the push rod is inserted into the push piston tube and a piston is fixedly provided thereon, the piston is in contact with the inner wall of the push piston tube, and a guide spring is fixedly provided between the first electromagnetic block and the second electromagnetic block.

[0010] Preferably, a power cable is provided between the pressure sensor and the first electromagnetic block and the second electromagnetic block.

[0011] Preferably, the air intake pipe is a three-way pipe.

[0012] Furthermore, the pressure sensor is a piezoresistive pressure sensor.

[0013] Preferably, the magnetic poles of the first electromagnetic block and the second electromagnetic block are the same on the side closest to each other.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model, through the provided valve seat, sealing airbag, pushing piston tube, air inlet pipe, pressure sensor and adjusting air inlet mechanism, can control the air intake of the sealing airbag in real time according to the oil and gas well pipeline internal pressure when the pressure valve is in use, ensuring that the sealing state between the sealing airbag and the valve plate can be changed in real time according to the pressure, thereby improving the sealing effect when the pressure valve is in use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is an internal sectional view of the present invention;

[0019] Figure 3This is an enlarged schematic diagram of part A of component 2 of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Valve body; 2. Valve plate; 3. Valve seat; 4. Sealing airbag; 5. Push piston tube; 6. Air inlet pipe; 7. Pressure sensor; 8. Mounting cylinder; 9. First electromagnetic block; 10. Second electromagnetic block; 11. Push rod; 12. Piston; 13. Guide spring; 14. Power cable. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses an adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology.

[0024] Example 1

[0025] This utility model provides, for example Figure 1-3 The adaptive sealing device for oil and gas well pressure valve based on intelligent sensing technology shown includes a valve body 1 and a valve plate 2 located inside the valve body 1. Valve seats 3 are provided on both sides of the valve plate 2. The valve seats 3 are fixed inside the valve body 1. An annular groove is provided on the side of the two valve seats 3 that are close to each other. A sealing airbag 4 is fixedly provided in the annular groove.

[0026] A piston tube 5 is fixedly installed on the upper end of the outer wall of the valve body 1. An air inlet pipe 6 is connected to the end of the piston tube 5. The air inlet pipe 6 is a three-way pipe and is connected to two sealing airbags 4. A pressure sensor 7 is fixedly installed on the upper end of the valve body 1. The detection end of the pressure sensor 7 passes into the interior of the valve body 1. An air intake adjustment mechanism for air intake is provided between the pressure sensor 7 and the piston tube 5. The air intake adjustment mechanism includes a mounting cylinder 8. A first electromagnetic block 9 is fixedly installed on the inner wall of the mounting cylinder 8. A second electromagnetic block 10 is in contact with the inner wall of the mounting cylinder 8. The magnetic poles of the first electromagnetic block 9 and the second electromagnetic block 10 are the same on the side closest to each other. A push rod 11 is fixedly installed on the side wall of the second electromagnetic block 10. The end of the push rod 11 is inserted into the piston tube 5 and a piston 12 is fixedly installed thereon. The piston 12 is in contact with the inner wall of the piston tube 5. A guide spring 13 is fixedly installed between the first electromagnetic block 9 and the second electromagnetic block 10.

[0027] Example 2

[0028] Example 2, based on Example 1, aims to enable the pressure sensor 7 to convert pressure changes into electrical signals when detected, thereby controlling the movement of the electromagnetic block and operating the piston tube 5 for intake regulation. For example... Figure 2-3As shown, the pressure sensor 7 is a piezoresistive pressure sensor, and a power cable 14 is provided between the pressure sensor 7, the first electromagnetic block 9, and the second electromagnetic block 10.

[0029] Working principle: During normal oil and gas well production operations, the piezoresistive pressure sensor 7 serves as a key monitoring element, constantly and accurately monitoring the oil and gas pressure inside the valve body 1. When the oil and gas pressure fluctuates, the piezoresistive pressure sensor 7, based on its own characteristics, converts the pressure change into an electrical signal.

[0030] These electrical signals are transmitted to the first electromagnetic block 9 and the second electromagnetic block 10 through the power cable 14. Since the first electromagnetic block 9 and the second electromagnetic block 10 have the same magnetic poles on the side close to each other, according to the principle of electromagnetism, they will generate a repulsive force between them.

[0031] When the oil and gas pressure increases, the electrical signal transmitted by the pressure sensor 7 increases the repulsive force between the first electromagnetic block 9 and the second electromagnetic block 10. This increased repulsive force overcomes the elastic force of the guide spring 13 and pushes the second electromagnetic block 10 to move away from the first electromagnetic block 9 along the inner wall of the mounting cylinder 8. The movement of the second electromagnetic block 10 causes the push rod 11 fixed to its side wall to move synchronously, and the piston 12 fixed to the end of the push rod 11 also moves in the piston tube 5.

[0032] As piston 12 moves away from pressure sensor 7 within piston tube 5, it compresses the gas within piston tube 5. Since intake pipe 6 is a three-way pipe, the compressed gas enters the two sealing air bladders 4 through intake pipe 6. The sealing air bladders 4 gradually expand under the filling of gas, and the fit between them and valve plate 2 becomes tighter, thereby enhancing the sealing effect and adapting to the situation of increased oil and gas pressure.

[0033] Conversely, when the oil and gas pressure decreases, the electrical signal transmitted by the pressure sensor 7 reduces the repulsive force between the first electromagnetic block 9 and the second electromagnetic block 10. At this time, the elastic force of the guide spring 13 is greater than the electromagnetic repulsive force, and the guide spring 13 pushes the second electromagnetic block 10 to move closer to the first electromagnetic block 9. The second electromagnetic block 10 drives the push rod 11 and the piston 12 to move in opposite directions. The piston 12 moves in the direction of the pressure sensor 7 within the piston tube 5, causing the gas in the sealing airbag 4 to flow back into the piston tube 5 through the air inlet pipe 6. The sealing airbag 4 contracts due to the reduction in gas, and the pressure on the valve plate 2 decreases accordingly, thereby maintaining a suitable sealing state.

[0034] Through the above process, this device can automatically and accurately adjust the inflation state of the sealing airbag 4 according to the real-time changes in the oil and gas pressure inside the oil and gas well pipeline, ensuring that the sealing state between the sealing airbag and the valve plate can always change in real time according to the pressure changes, effectively improving the sealing effect when the pressure valve is used, and solving the problem that existing sealing devices cannot quickly adjust the sealing effect according to real-time pressure changes.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An adaptive sealing device for an oil and gas well pressure valve based on intelligent sensing technology, comprising a valve body (1) and a valve plate (2) disposed inside the valve body (1), characterized in that, Both sides of the valve plate (2) are provided with valve seats (3), the valve seats (3) are fixedly installed inside the valve body (1), and an annular groove is opened on the side of the two valve seats (3) that are close to each other. A sealing airbag (4) is fixedly installed in the annular groove. A push piston tube (5) is fixedly provided on the upper end of the outer wall of the valve body (1). An air inlet pipe (6) is connected to the end of the push piston tube (5). The air inlet pipe (6) is connected to the two sealing airbags (4). A pressure sensor (7) is fixedly provided on the upper end of the valve body (1). The detection end of the pressure sensor (7) is inserted into the interior of the valve body (1). An air intake adjustment mechanism for air intake is provided between the pressure sensor (7) and the push piston tube (5).

2. The adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology according to claim 1, characterized in that, The regulating intake mechanism includes an installation cylinder (8), a first electromagnetic block (9) is fixedly provided on the inner wall of the installation cylinder (8), a second electromagnetic block (10) is contacted on the inner wall of the installation cylinder (8), a push rod (11) is fixedly provided on the side wall of the second electromagnetic block (10), the end of the push rod (11) is inserted into the push piston tube (5) and a piston (12) is fixedly provided thereon, the piston (12) is in contact with the inner wall of the push piston tube (5), and a guide spring (13) is fixedly provided between the first electromagnetic block (9) and the second electromagnetic block (10).

3. The adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology according to claim 1, characterized in that, A power cable (14) is provided to connect the pressure sensor (7) to the first electromagnetic block (9) and the second electromagnetic block (10).

4. The adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology according to claim 1, characterized in that, The intake pipe (6) is a three-way pipe.

5. The adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology according to claim 1, characterized in that, The pressure sensor (7) is a piezoresistive pressure sensor.

6. The adaptive sealing device for oil and gas well pressure valves based on intelligent sensing technology according to claim 2, characterized in that, The first electromagnetic block (9) and the second electromagnetic block (10) have the same magnetic poles on the side closest to each other.

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