Downhole high pressure automatic bleed valve

Abstract

The utility model relates to a kind of underground high-pressure automatic air release valve, including air valve, the bottom of air valve is fixedly connected with flange, the both sides of flange are fixedly connected with fixed block, and the top of fixed block is all set with first recess.The utility model has the beneficial effect that installation reinforcement design realizes the adjustability of height, can adapt to a variety of different width connecting components, greatly improve the flexibility and compatibility of air release valve installation.Firm clamping action effectively enhances the stability of flange connection, even in the complex working conditions underground, strong vibration, impact and pressure fluctuation, etc., can significantly reduce the risk of flange loosening or falling, effectively guarantee the sealing and integrity of the entire underground high-pressure system, reduce the gas leakage and other security risks caused by unstable installation, so as to ensure that underground operation can be safe and continuous, reduce the maintenance cost and production stagnation time caused by equipment failure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a deflation valve technical field especially relates to a downhole high pressure automatic deflation valve. BACKGROUND

[0002] In the downhole mining operation environment of petroleum, natural gas and the like, with the increase of mining depth, the downhole pressure is rising. The traditional deflation valve often has many limitations, and the sealing performance of part of the deflation valve is poor, and gas leakage phenomenon is easy to appear under high pressure environment, which not only causes waste of resources, but also may cause serious safety accidents such as explosion, fire and the like, and constitutes a great threat to the life safety of downhole workers.

[0003] However, in the prior art, the existing deflation valve mounting structure is relatively single, and it is difficult to adapt to the installation requirements of different pipe diameters and complex downhole equipment layout. In downhole operation, the diameter of the pipeline and the specification of the connected equipment often differ, and if the deflation valve cannot be flexibly adjusted in installation mode, it will lead to problems such as inconvenient installation and poor stability, increase the frequency of equipment maintenance and replacement, and reduce the efficiency of mining operation. UTILITY MODEL CONTENTS

[0004] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a downhole high pressure automatic deflation valve, which has solved the problem that the deflation valve mounting structure in the prior art is relatively single and difficult to adapt to the installation requirements of different pipe diameters and complex downhole equipment layout. In downhole operation, the diameter of the pipeline and the specification of the connected equipment often differ, and if the deflation valve cannot be flexibly adjusted in installation mode, it will lead to problems such as inconvenient installation and poor stability, increase the frequency of equipment maintenance and replacement, and reduce the efficiency of mining operation.

[0005] The technical scheme of the utility model is as follows: a downhole high pressure automatic deflation valve, comprising a gas valve, a flange is fixedly connected to the bottom of the gas valve, fixed blocks are fixedly connected to the two sides of the flange, first recesses are formed in the top of the fixed blocks, threaded rods are rotatably connected in the first recesses, threaded blocks are threadedly connected between the two threaded rods, two rotating cylinders are rotatably connected to the top of the threaded blocks, two moving grooves are formed in the bottom of the fixed blocks and below the first recesses, moving blocks are slidably connected in the rotating cylinders, screws are fixedly connected to the bottom of the moving blocks, the screws penetrate the rotating cylinders and the moving grooves, the screws are threadedly connected with the threaded blocks, sliding blocks are fixedly connected to the two sides of the moving blocks, and sliding grooves are formed in the two sides of the rotating cylinders, and the sliding blocks are slidably connected with the sliding grooves.

[0006] The flange at the bottom of the gas valve is fixedly connected with the fixed blocks on both sides. The threaded rods in the first grooves at the top of the fixed blocks can be rotated through the transmission of the rotating rod and the bevel gear set. Specifically, the second bevel gears at both ends of the rotating rod are in meshing connection with the first bevel gears at one end of the threaded rods extending into the second grooves. When the rotating rod is rotated, the threaded rods are rotated, and since the threaded blocks are threadedly connected between the two threaded rods, the rotation of the threaded rods causes the threaded blocks to move in the horizontal direction. The rotating drum rotatably connected to the top of the threaded blocks moves accordingly. The sliding blocks at both sides of the moving block slidably connected in the rotating drum are in sliding connection with the sliding grooves at both sides of the rotating drum, ensuring that the moving block stably slides in the rotating drum. The screw rods at the bottom of the moving block penetrate the moving grooves in the rotating drum and the fixed block, and the clamping plates are rotatably connected to the bottom of the screw rods. After the flange is butt-jointed with the connecting part, the position of the threaded block is adjusted by rotating the rotating rod, the clamping plates are moved, and the connecting part can be accurately clamped according to the width of the connecting part, so that the clamping plates are tightly attached to both sides of the connecting part, further reinforcing the installation structure.

[0007] As a preferred embodiment, the inside of the gas valve is fixedly connected with a conical ring, the inside of the gas valve above the conical ring is slidably connected with a plug ball, and the outside of the gas valve is longitudinally and equidistantly provided with exhaust holes.

[0008] Through the above technical scheme, the high-pressure gas in the well enters the inside of the gas valve. Under normal pressure, the plug ball in the gas valve tightly attaches to the conical ring under the action of its own gravity and the pressure above, so that the exhaust holes longitudinally and equidistantly provided on the outside of the gas valve are in a closed state, preventing gas leakage. When the downhole pressure rises and exceeds the set value, the upward thrust generated by the high-pressure gas is sufficient to overcome the gravity and other resistance of the plug ball, pushing the plug ball to move upward. At this time, the gas can be discharged outward through the gap between the conical ring and the plug ball and the exhaust holes, realizing the automatic gas discharge function, effectively ensuring the stability of the downhole system pressure, preventing safety accidents caused by excessive pressure, and the longitudinal exhaust holes can adjust the exhaust volume according to the pressure.

[0009] As a preferred embodiment, the top of the conical ring is equidistantly provided with water leakage holes, and the bottom of the screw rod is rotatably connected with a clamping plate.

[0010] Through the above technical scheme, the top of the conical ring is equidistantly provided with water leakage holes, and when there is water accumulation in the well, the water can be discharged through the water leakage holes, avoiding accumulation in the gas valve. The clamping plate can further reinforce the thickness of the connecting part when the screw rod moves.

[0011] As a preferred implementation form, the top of the fixed block and one side of the first groove are provided with a second groove, the inside of the second groove is fixedly connected with two fixed plates, a rotating rod is rotatably connected between the two fixed plates corresponding to the two fixed plates, and the two ends of the rotating rod penetrate through the fixed plates and are fixedly connected with second bevel gears.

[0012] Through the above technical scheme, the rotating rod is supported by the fixed plate in the second groove, so that it can stably rotate. When the rotating rod is rotated, the second bevel gears fixed at both ends thereof are rotated, and since the second bevel gears are meshed with the first bevel gears at one end of the threaded rod extending into the second groove, the rotation of the rotating rod is converted into the rotation of the threaded rod.

[0013] As a preferred implementation form, the outer side of the rotating rod is fixedly connected with a third bevel gear, and the inner wall of the second groove is rotatably connected with a fourth bevel gear, and the fourth bevel gear is meshed with the third bevel gear.

[0014] Through the above technical scheme, the third bevel gear fixed on the rotating rod is meshed with the fourth bevel gear rotatably connected with the inner wall of the second groove, and when the rotating rod is rotated, the third bevel gear drives the fourth bevel gear to rotate. The beneficial effect of this design is that it can realize power distribution or change the transmission direction, so that in some specific downhole equipment layout or operation requirements, power can be transmitted to other associated components or mechanisms through the fourth bevel gear, thereby realizing more diversified function linkage.

[0015] As a preferred implementation form, the inner wall of the rotating drum is provided with a wear-resistant coating made of ceramic material.

[0016] Through the above technical scheme, the inner wall of the rotating drum is provided with a wear-resistant coating made of ceramic material. During the movement of the threaded block and the sliding of the moving block in the rotating drum, the wear-resistant coating effectively reduces the friction between the moving block and the inner wall of the rotating drum.

[0017] Compared with the prior art, the advantages and positive effects of the utility model lie in that,

[0018] The utility model discloses a kind of adjustable height of installation reinforcement design, can adapt to multiple different width connecting components, greatly improve the flexibility and compatibility of air release valve installation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Provide a kind of structure schematic diagram of underground high-pressure automatic air release valve for the utility model;

[0020] Figure 2 Provide a kind of structure schematic diagram of underground high-pressure automatic air release valve for the utility model;

[0021] Figure 3 Provide a kind of structure schematic diagram of underground high-pressure automatic air release valve for the utility model;

[0022] Figure 4 Provide a kind of structure schematic diagram of underground high-pressure automatic air release valve for the utility model.

[0023] Legend: 1, air valve;2, plug ball;3, conical ring;4, water leakage hole;5, exhaust hole;6, flange;7, fixed block;8, first recess;9, threaded rod;10, first bevel gear;11, fixed plate;12, rotating rod;13, second bevel gear;14, third bevel gear;15, fourth bevel gear;16, threaded block;17, rotating drum;18, moving block;19, screw rod;20, sliding block;21, clamping plate;22, moving groove;23, second recess;24, sliding slot. DETAILED DESCRIPTION

[0024] The utility model will be further described below with reference to the drawings and specific embodiment

[0025] EMBODIMENT

[0026] As Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the utility model provides a technical scheme: including air valve 1, the bottom fixed connection of air valve 1 has flange 6, both sides of flange 6 are fixedly connected with fixed block 7, the top of fixed block 7 is all equipped with first recess 8, the inside of first recess 8 is all rotatably connected with threaded rod 9, the threaded connection of screw block 16 is all carried out between the both sides of two threaded rods 9, the top of screw block 16 is rotatably connected with two rotating cylinders 17, the bottom of fixed block 7 and located below first recess 8 are all equipped with two moving grooves 22, the inside of rotating cylinder 17 is all slidably connected with moving block 18, the bottom of moving block 18 is all fixedly connected with screw rod 19, the bottom of screw rod 19 is all through rotating cylinder 17 and moving groove 22, screw rod 19 is threadedly connected with screw block 16, both sides of moving block 18 are all fixedly connected with sliding block 20, both sides of rotating cylinder 17 are all equipped with sliding slot 24, and sliding block 20 is all slidably connected with sliding slot 24.

[0027] In the embodiment, the flange 6 at the bottom of the air valve 1 is fixedly connected with the fixed block 7 on both sides. The threaded rod 9 in the first recess 8 on the top of the fixed block 7 can be rotated through the transmission of the rotating rod 12 and the bevel gear set. Specifically, the second bevel gear 13 at both ends of the rotating rod 12 is meshingly connected with the first bevel gear 10 at one end of the threaded rod 9 extending into the second recess 23. When the rotating rod 12 is rotated, the threaded rod 9 is driven to rotate. Since the screw block 16 is threadedly connected between the both sides of the threaded rod 9, the rotation of the threaded rod 9 causes the screw block 16 to move in the horizontal direction. The rotating cylinder 17 rotatably connected on the top of the screw block 16 moves accordingly. The sliding block 20 on both sides of the moving block 18 slidably connected in the rotating cylinder 17 is slidably connected with the sliding slot 24 on both sides of the rotating cylinder 17, ensuring the stable sliding of the moving block 18 in the rotating cylinder 17. The screw rod 19 at the bottom of the moving block 18 penetrates the rotating cylinder 17 and the moving groove 22 at the bottom of the fixed block 7, and the clamping plate 21 is rotatably connected at the bottom of the screw rod 19. After the flange 6 is butt-jointed with the connecting part, the position of the screw block 16 is adjusted by rotating the rotating rod 12, and the clamping plate 21 is driven to move. The precise clamping can be performed according to the width of the connecting part, so that the clamping plate 21 is tightly attached to both sides of the connecting part, further reinforcing the installation structure.

[0028] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the inside of the air valve 1 is fixedly connected with the conical ring 3, the inside of the air valve 1 and above the conical ring 3 is slidably connected with the plug ball 2, and the outside of the air valve 1 is longitudinally and equidistantly provided with the exhaust hole 5.

[0029] In this embodiment, the high-pressure gas in the well enters the inside of the gas valve 1. Under normal pressure conditions, the blocking ball 2 in the gas valve 1 is tightly attached to the conical ring 3 under the action of its own gravity and the pressure above, so that the exhaust holes 5 opened longitudinally on the outside of the gas valve 1 are in a closed state, preventing gas leakage. When the downhole pressure rises and exceeds the set value, the upward thrust generated by the high-pressure gas is enough to overcome the gravity and other resistance of the blocking ball 2, pushing the blocking ball 2 to move upward, at which time the gas can be discharged outward through the gap between the conical ring 3 and the blocking ball 2 and the exhaust holes 5, realizing the automatic gas discharge function, effectively ensuring the stability of the downhole system pressure, preventing safety accidents caused by excessive pressure, and at the same time, the longitudinal exhaust holes 5 can adjust the exhaust amount according to the pressure.

[0030] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the top of the conical ring 3 is equally provided with water leakage holes 4, and the bottom of the screw rod 19 is rotatably connected with a clamping plate 21.

[0031] In this embodiment, the top of the conical ring 3 is equally provided with water leakage holes 4, and the bottom of the screw rod 19 is rotatably connected with a clamping plate 21.

[0032] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the top of the fixed block 7 and on one side of the first groove 8 are provided with a second groove 23, the inside of the second groove 23 is fixedly connected with two fixed plates 11, the corresponding two fixed plates 11 are rotatably connected with a rotating rod 12, the two ends of the rotating rod 12 penetrate through the fixed plate 11 and are fixedly connected with a second bevel gear 13, one end of the threaded rod 9 extends into the inside of the corresponding second groove 23 and is fixedly connected with a first bevel gear 10, and the first bevel gear 10 is meshingly connected with the second bevel gear 13.

[0033] In this embodiment, in the second groove 23, the rotating rod 12 is supported by the fixed plate 11, so that it can stably rotate. When the rotating rod 12 is rotated, the second bevel gear 13 fixed at both ends thereof will be rotated, and since the second bevel gear 13 and the first bevel gear 10 at one end of the threaded rod 9 extending into the second groove 23 are meshingly connected with each other, the rotation of the rotating rod 12 is converted into the rotation of the threaded rod 9.

[0034] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the outer side of the rotating rod 12 is fixedly connected with the third bevel gear 14, and the inner wall of the second groove 23 is rotatably connected with the fourth bevel gear 15, and the fourth bevel gear 15 is in meshing connection with the third bevel gear 14.

[0035] In the embodiment, the third bevel gear 14 fixed on the rotating rod 12 is in meshing connection with the fourth bevel gear 15 rotatably connected with the inner wall of the second groove 23, and when the rotating rod 12 is rotated, the third bevel gear 14 drives the fourth bevel gear 15 to rotate. The beneficial effect of this design is that it can realize power distribution or change the transmission direction, so that in some specific downhole equipment layout or operation requirements, power can be transmitted to other associated components or mechanisms through the fourth bevel gear 15, thereby realizing more diversified function linkage.

[0036] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the inner wall of the rotating drum 17 is provided with a wear-resistant coating made of ceramic material.

[0037] In the embodiment, the inner wall of the rotating drum 17 is provided with a wear-resistant coating made of ceramic material. During the movement of the threaded block 16 and the sliding of the moving block 18 in the rotating drum 17, the wear-resistant coating effectively reduces the friction between the moving block 18 and the inner wall of the rotating drum 17.

[0038] Working principle:

[0039] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 Figure 1 Figure 2 Figure 3 Figure 4 , the flange 6 at the bottom of the air valve 1 is fixedly connected with the fixed block 7 on both sides. The threaded rods 9 in the first grooves 8 at the top of the fixed blocks 7 can be rotated through the transmission of the rotating rod 12 and the bevel gear set. Specifically, the second bevel gears 13 at both ends of the rotating rod 12 are in meshing connection with the first bevel gears 10 extending to the second grooves 23 at one end of the threaded rods 9. When the rotating rod 12 is rotated, the threaded rods 9 are driven to rotate, and since the threaded block 16 is threadedly connected between the corresponding two threaded rods 9, the rotation of the threaded rods 9 causes the threaded block 16 to move in the horizontal direction. The rotating drum 17 rotatably connected at the top of the threaded block 16 moves accordingly, and the sliding blocks 20 on both sides of the moving block 18 slidably connected in the rotating drum 17 are in sliding connection with the sliding grooves 24 on both sides of the rotating drum 17, ensuring that the moving block 18 stably slides in the rotating drum 17. The screw rod 19 at the bottom of the moving block 18 penetrates the moving groove 22 at the bottom of the fixed block 7 and the rotating drum 17, and the clamping plate 21 is rotatably connected at the bottom of the screw rod 19. After the flange 6 is butt-jointed with the connecting part, the position of the threaded block 16 is adjusted by rotating the rotating rod 12, and the clamping plate 21 is driven to move, so that precise clamping can be performed according to the width of the connecting part, so that the clamping plate 21 is tightly attached to both sides of the connecting part, further reinforcing the installation structure.

[0040] The high-pressure gas in the well enters the inside of the gas valve 1. Under normal pressure, the blocking ball 2 in the gas valve 1 is tightly attached to the conical ring 3 under the action of its own gravity and the pressure above, so that the exhaust holes 5 opened longitudinally on the outside of the gas valve 1 are in a closed state, preventing gas leakage. When the downhole pressure rises and exceeds the set value, the upward thrust generated by the high-pressure gas is enough to overcome the gravity and other resistance of the blocking ball 2, pushing the blocking ball 2 to move upward, at which time the gas can be discharged outward through the gap between the conical ring 3 and the blocking ball 2 and the exhaust holes 5, realizing the automatic gas discharge function, effectively ensuring the stability of the downhole system pressure, preventing safety accidents caused by excessive pressure, and the longitudinal exhaust holes 5 can adjust the exhaust volume according to the pressure, and the water leakage holes 4 are opened equidistantly on the top of the conical ring 3, so that when there is water accumulation in the well, the water can be discharged through the water leakage holes 4 to avoid accumulation in the gas valve 1, and the clamping plate 21 can further reinforce the thickness of the connecting part when the screw rod 19 moves, and the rotating rod 12 is supported by the fixed plate 11 in the second groove 23 to enable stable rotation. When the rotating rod 12 is rotated, the second bevel gear 13 fixed at both ends thereof will rotate, and since the second bevel gear 13 is meshed with the first bevel gear 10 at one end of the threaded rod 9 extending into the second groove 23, the rotation of the rotating rod 12 is converted into the rotation of the threaded rod 9, and the third bevel gear 14 fixed on the rotating rod 12 is meshed with the fourth bevel gear 15 rotationally connected to the inner wall of the second groove 23, so that when the rotating rod 12 is rotated, the third bevel gear 14 drives the fourth bevel gear 15 to rotate. The beneficial effect of this design is that it can realize power diversion or change the transmission direction, so that in some specific downhole equipment layout or operation requirements, power can be transmitted to other related components or mechanisms through the fourth bevel gear 15, thereby realizing more diversified function linkage, and the wear-resistant coating made of ceramic material is arranged on the inner wall of the rotating drum 17. During the movement of the threaded block 16 and the sliding of the moving block 18 in the rotating drum 17, the wear-resistant coating effectively reduces the friction between the moving block 18 and the inner wall of the rotating drum 17.

[0041] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A downhole high-pressure automatic venting valve, comprising a venting valve (1), characterized in that: The bottom of the air valve (1) is fixedly connected to a flange (6), and both sides of the flange (6) are fixedly connected to fixing blocks (7). The top of each fixing block (7) is provided with a first groove (8), and a threaded rod (9) is rotatably connected inside the first groove (8). A threaded block (16) is threaded between each two threaded rods (9). The top of each threaded block (16) is rotatably connected to two rotating cylinders (17). The bottom of the fixing block (7) and below the first groove (8) is provided with two... Each of the rotating cylinder (17) has a movable groove (22), and each of the rotating cylinder (17) has a movable block (18) slidably connected inside. Each of the movable blocks (18) has a screw (19) fixedly connected to its bottom. The bottom of each screw (19) passes through the rotating cylinder (17) and the movable groove (22). Each screw (19) is threadedly connected to a threaded block (16). Each of the two sides of the movable block (18) has a slider (20) fixedly connected to it. Each of the two sides of the rotating cylinder (17) has a sliding groove (24), and each slider (20) is slidably connected to the sliding groove (24).

2. The downhole high-pressure automatic venting valve according to claim 1, characterized in that: A conical ring (3) is fixedly connected inside the air valve (1), and a blocking ball (2) is slidably connected inside the air valve (1) and above the conical ring (3). Exhaust holes (5) are longitudinally and equidistantly opened on the outer side of the air valve (1).

3. The downhole high-pressure automatic venting valve according to claim 2, characterized in that: The top of the conical ring (3) is provided with drainage holes (4) at equal intervals, and the bottom of the screw (19) is rotatably connected with a clamping plate (21).

4. The downhole high-pressure automatic venting valve according to claim 1, characterized in that: The top of the fixing block (7) and one side of the first groove (8) are provided with a second groove (23). Two fixing plates (11) are fixedly connected inside the second groove (23). A rotating rod (12) is rotatably connected between the two fixing plates (11). Both ends of the rotating rod (12) pass through the fixing plate (11) and are fixedly connected with a second bevel gear (13). One end of the threaded rod (9) extends into the corresponding second groove (23) and is fixedly connected with a first bevel gear (10). The first bevel gear (10) and the second bevel gear (13) are meshed together.

5. The downhole high-pressure automatic venting valve according to claim 4, characterized in that: The outer side of the rotating rod (12) is fixedly connected to a third bevel gear (14), and the inner wall of the second groove (23) is rotatably connected to a fourth bevel gear (15), which meshes with the third bevel gear (14).

6. The downhole high-pressure automatic venting valve according to claim 1, characterized in that: The inner wall of the rotating drum (17) is provided with a wear-resistant coating, which is made of ceramic material.

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