Underground fluid valve control device with self-cleaning function

Abstract

The utility model discloses an underground fluid valve control device with a self-cleaning function, which relates to the technical field of mineral resource exploitation and comprises a control valve and a valve plate arranged in the control valve, a valve rod is rotatably arranged at the top of the control valve in a penetrating manner, the bottom of the valve rod penetrates into the control valve and is fixedly connected with the valve plate, and the valve rod is arranged in a vertically-through tubular manner. A connecting pipe rotatably penetrates through the upper end of the valve plate, the valve plate is hollow, a plurality of liquid outlet holes are formed in the side portion of the valve plate at intervals, a cleaning liquid box is fixedly arranged at the top of the control valve, the end of the connecting pipe penetrates into the cleaning liquid box, and the pipe wall of the connecting pipe is fixedly sleeved with a liquid conveying pump. When underground fluid in the valve flows, cleaning liquid can be sprayed to the inner wall of the control valve through the liquid outlet holes by driving the valve plate to rotate, impurities on the inner wall of the valve body are dissolved and cleaned through the cleaning liquid, meanwhile, the cleaning liquid is discharged outwards by means of conveying of the fluid, and self-cleaning of the valve is completed.

Description

Technical Field

[0001] This utility model relates to the field of mineral resource mining technology, specifically to a downhole fluid valve control device with self-cleaning function. Background Technology

[0002] In the process of downhole fluid transportation, in order to control the flow of fluid, corresponding valve control devices are set up for regulation. For example, the patent document with announcement number CN118582188A discloses a valve device for downhole fluid control. This device sets a valve core element in a sealed inner cavity between the base and the gland, and forms a contraction edge on the outer edge of the valve plate facing the inlet. At the same time, it uses an elastic element to provide a closing thrust for the valve core element, so that the valve core element is easily affected by external interference under the action of Bernoulli's principle and forms a closing action.

[0003] However, when the above-mentioned device is in use, the fluid is directly extracted from the well, resulting in a large number of impurities inside the fluid. When the fluid passes through the inside of the valve, the impurities are easy to accumulate inside the valve body, which affects the sealing and fluid transport control effect during the opening and closing process of the valve body. Utility Model Content

[0004] In view of the problems existing in the above-mentioned downhole fluid valve control devices with self-cleaning function, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a downhole fluid valve control device with self-cleaning function, which solves the problem that when downhole fluid is directly extracted, a lot of impurities are present inside the fluid, and when the fluid passes through the valve, the impurities are easy to accumulate inside the valve body and affect the opening and closing of the valve body.

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

[0007] A downhole fluid valve control device with self-cleaning function includes a control valve and a valve plate disposed inside the control valve. A valve stem is rotatably inserted through the top of the control valve, and the bottom of the valve stem is inserted into the control valve and fixedly connected to the valve plate. The valve stem is arranged in a vertically continuous tubular shape, and a connecting pipe is rotatably inserted through the upper end. The valve plate is hollow and has multiple spaced liquid outlet holes on its side. A cleaning fluid tank is fixedly disposed on the top of the control valve, and the end of the connecting pipe is inserted into the cleaning fluid tank. A liquid pump is fixedly sleeved on the wall of the connecting pipe.

[0008] The lower end of the valve stem wall is provided with a rotating spraying mechanism for driving the valve plate to rotate.

[0009] Preferably, the rotating spraying mechanism includes a drive motor, a support plate is fixedly provided on the top of the control valve, a worm gear is rotatably passed through the side of the support plate, a worm wheel is fitted on the worm gear, the worm wheel is fixedly sleeved on the rod wall of the valve stem, the drive motor is fixedly provided on the upper end of the outer wall of the support plate, and a drive bevel gear is fixedly provided at the end of the output shaft, a transmission bevel gear is fixedly sleeved on the rod wall of the worm gear, and the drive bevel gear and the transmission bevel gear are fitted together.

[0010] Preferably, a reinforcing plate is fixedly provided on the top of the support plate, and the connecting pipe is located in a rigid plastic pipe and fixedly disposed inside the reinforcing plate.

[0011] Preferably, a crossbar is rotatably inserted through the side of the cleaning fluid tank, and a stirring blade is fixedly sleeved on the wall of the crossbar. The stirring blade is located inside the cleaning fluid tank, and the crossbar is welded and fixed to the worm gear.

[0012] Furthermore, the top of the cleaning fluid tank is connected to an injection pipe, and a sealing plug is slidably embedded in the inner wall of the injection pipe.

[0013] Preferably, the outer wall of the valve plate is fixed with two symmetrically arranged sealing rings, which are in contact with the inner wall of the control valve, and the plurality of liquid outlet holes are located between the two sealing rings.

[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 control valve, valve stem, valve plate, connecting pipe, cleaning fluid tank, sealing ring and outlet hole, enables the valve to be self-cleaned when the fluid is flowing downhole. The valve plate can be rotated to spray the cleaning fluid through multiple outlet holes onto the inner wall of the control valve. The cleaning fluid dissolves and cleans the impurities on the inner wall of the valve body, and is discharged outward with the help of fluid transportation, thus ensuring the stability of the valve during continuous fluid flow.

[0016] 2. This utility model, through the provided valve stem, rotating spraying mechanism, cleaning liquid tank, crossbar and stirring blade, can stir the cleaning liquid inside the cleaning liquid tank when the valve stem rotates, so as to avoid the precipitation of the internal components of the cleaning liquid and ensure that the cleaning liquid effectively dissolves and cleans the impurities on the inner wall. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the valve plate of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the cleaning fluid tank of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Control valve; 2. Valve plate; 3. Valve stem; 4. Connecting pipe; 5. Liquid outlet; 6. Cleaning liquid tank; 7. Infusion pump; 8. Drive motor; 9. Support plate; 10. Worm gear; 11. Worm wheel; 12. Drive bevel gear; 13. Transmission bevel gear; 14. Reinforcing plate; 15. Crossbar; 16. Stirring blade; 17. Injection pipe; 18. Sealing plug; 19. Sealing ring. Detailed Implementation

[0023] 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.

[0024] This utility model discloses a downhole fluid valve control device with self-cleaning function.

[0025] Example 1

[0026] This utility model provides, for example Figure 1-3 The device shown is a downhole fluid valve control device with self-cleaning function, including a control valve 1 and a valve plate 2 disposed inside the control valve 1. A valve stem 3 is rotatably inserted through the top of the control valve 1, and the bottom of the valve stem 3 is inserted into the control valve 1 and fixedly connected to the valve plate 2. The valve stem 3 is arranged in a vertically continuous tubular shape, and a connecting pipe 4 is rotatably inserted through the upper end. The valve plate 2 is hollow and has multiple spaced liquid outlet holes 5 on its side. Two symmetrically arranged sealing rings 19 are fixedly installed on the outer wall of the valve plate 2. The sealing rings 19 are in contact with the inner wall of the control valve 1. The multiple liquid outlet holes 5 are located between the two sealing rings 19. A cleaning fluid tank 6 is fixedly installed on the top of the control valve 1. The end of the connecting pipe 4 is inserted into the cleaning fluid tank 6, and a pump 7 is fixedly sleeved on the wall of the connecting pipe 4.

[0027] The lower end of the valve stem 3 is provided with a rotating spraying mechanism for driving the valve plate 2 to rotate. The rotating spraying mechanism includes a drive motor 8. A support plate 9 is fixedly provided on the top of the control valve 1. A reinforcing plate 14 is fixedly provided on the top of the support plate 9. The connecting pipe 4 is located in a rigid plastic pipe and is fixedly provided inside the reinforcing plate 14. A worm gear 10 is rotatably passed through the side of the support plate 9. A worm wheel 11 is fitted on the worm gear 10. The worm wheel 11 is fixedly sleeved on the stem wall of the valve stem 3. The drive motor 8 is fixedly provided on the upper end of the outer wall of the support plate 9, and a drive bevel gear 12 is fixedly provided at the end of the output shaft. A transmission bevel gear 13 is fixedly sleeved on the stem wall of the worm gear 10. The drive bevel gear 12 and the transmission bevel gear 13 are fitted together.

[0028] Example 2

[0029] Example 2, based on Example 1, aims to ensure that the internal components of the cleaning fluid are evenly mixed and sprayed onto the inner wall of control valve 1 during the spraying process. Figure 1 and Figure 3 As shown, the top of the cleaning fluid tank 6 is connected to an injection pipe 17, and a sealing plug 18 is slidably embedded in the inner wall of the injection pipe 17. A crossbar 15 is rotatably inserted through the side of the cleaning fluid tank 6, and a stirring blade 16 is fixedly sleeved on the wall of the crossbar 15. The stirring blade 16 is located inside the cleaning fluid tank 6, and the crossbar 15 is welded and fixed to the worm gear 10.

[0030] Working principle: During the fluid transport process, the fluid is transported and controlled by the rotation of the valve plate 2 inside the control valve 1. When there is no fluid flow inside the control valve 1, the infusion pump 7 draws cleaning fluid from the cleaning fluid tank 6 and transports it to the hollow valve plate 2 through the hollow pipe in the valve stem 3. The valve plate 2 is driven by the drive motor 8 to drive the bevel gear 12 to rotate. The meshing of the drive bevel gear 12 and the transmission bevel gear 13 drives the worm gear 10 to rotate. At the same time, through the cooperation of the worm gear 10 and the worm wheel 11, the valve stem 3 rotates stably and drives the valve plate 2 to rotate. At this time, the liquid outlet 5 on the side of the valve plate 2 sprays the cleaning fluid at high speed, forming an annular covering flow to flush the inner wall of the control valve 1 and dissolve impurities such as oil stains and mud.

[0031] Meanwhile, when the worm gear 10 rotates, it links the stirring blades 16 in the cleaning fluid tank 6 through the crossbar 15 to prevent the cleaning fluid solute from precipitating and stratifying, ensuring uniform spray concentration. After the cleaning fluid that dissolves impurities is mixed with the downhole fluid, it is discharged from the valve by means of fluid pressure and flow rate to avoid secondary accumulation. In addition, the sealing ring 19 on the outer wall of the valve plate 2 fits against the inner wall of the control valve 1, which not only ensures valve sealing but also limits the spray range of the outlet hole 5 to prevent cleaning fluid leakage.

[0032] 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. A downhole fluid valve control device with self-cleaning function, comprising a control valve (1) and a valve plate (2) disposed inside the control valve (1), characterized in that, The top of the control valve (1) is rotatably fitted with a valve stem (3), the bottom of the valve stem (3) is inserted into the control valve (1) and fixedly connected to the valve plate (2), the valve stem (3) is arranged in a vertically through-tube shape, and the upper end is rotatably fitted with a connecting pipe (4), the valve plate (2) is hollow, and multiple spaced liquid outlet holes (5) are opened on the side, the top of the control valve (1) is fixedly fitted with a cleaning liquid tank (6), the end of the connecting pipe (4) is inserted into the cleaning liquid tank (6), and the wall of the connecting pipe (4) is fixedly fitted with an infusion pump (7); The lower end of the valve stem (3) is provided with a rotating spraying mechanism for driving the valve plate (2) to rotate.

2. The downhole fluid valve control device with self-cleaning function according to claim 1, characterized in that, The rotating spraying mechanism includes a drive motor (8), a support plate (9) is fixedly provided on the top of the control valve (1), a worm gear (10) is rotatably passed through the side of the support plate (9), the worm gear (10) is fitted with a worm wheel (11), the worm wheel (11) is fixedly sleeved on the rod wall of the valve stem (3), the drive motor (8) is fixedly provided on the upper end of the outer wall of the support plate (9), and a drive bevel gear (12) is fixedly provided at the end of the output shaft, a transmission bevel gear (13) is fixedly sleeved on the rod wall of the worm gear (10), and the drive bevel gear (12) and the transmission bevel gear (13) are fitted together.

3. The downhole fluid valve control device with self-cleaning function according to claim 2, characterized in that, A reinforcing plate (14) is fixedly provided on the top of the support plate (9), and the connecting pipe (4) is located in the rigid plastic pipe and fixedly provided in the reinforcing plate (14).

4. The downhole fluid valve control device with self-cleaning function according to claim 1, characterized in that, A crossbar (15) is rotatably inserted through the side of the cleaning liquid tank (6). A stirring blade (16) is fixedly sleeved on the wall of the crossbar (15). The stirring blade (16) is located inside the cleaning liquid tank (6). The crossbar (15) is welded and fixed to the worm gear (10).

5. The downhole fluid valve control device with self-cleaning function according to claim 1, characterized in that, The top of the cleaning fluid tank (6) is connected to an injection pipe (17), and a sealing plug (18) is slidably embedded in the inner wall of the injection pipe (17).

6. The downhole fluid valve control device with self-cleaning function according to claim 1, characterized in that, The outer wall of the valve plate (2) is fixed with two symmetrically arranged sealing rings (19), which are in contact with the inner wall of the control valve (1), and the plurality of liquid outlet holes (5) are located between the two sealing rings (19).

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