Wellhead high-pressure valve

Abstract

The utility model relates to the technical field of valves, and discloses a wellhead high-pressure valve which comprises a valve assembly, the valve assembly is composed of a valve body, a ball body, a valve rod, a sealing assembly and an executing structure, a filtering tank is arranged at the right end of the valve assembly, and a filtering cylinder is movably connected in the filtering tank in a sleeved mode. The top of the outer wall of the filtering tank is fixedly sleeved with a flange plate, the filtering tank and the flange plate are integrally formed, and the top of the filtering tank is in lap joint with a sealing cover. Through the cooperation of the filtering tank, the filtering cylinder, the through opening, the annular sealing groove, the flange plate, the sealing cover, the metal sealing ring, the sealing ring and the bolt, impurities and solid particles in a medium can be conveniently filtered, the impurities in the medium are prevented from entering the valve body, mechanical abrasion is prevented from being aggravated, and the service life of the valve body is prolonged. And the maintenance period and the overall service life of the valve are shortened, so that the service life of the valve assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically to a wellhead high-pressure valve. Background Technology

[0002] High-pressure valves at wellheads are control components in fluid transport systems. In high-pressure water injection operations, pipelines are needed to transport water, and high-pressure valves are installed on these pipelines to control the flow. High-pressure valves include high-pressure gate valves, high-pressure globe valves, and high-pressure ball valves. High-pressure ball valves, in particular, use a ball as their opening and closing element, controlling the flow of fluid by rotating the ball. They are suitable for applications requiring rapid switching. However, high-pressure ball valves are difficult to filter impurities and solid particles from the medium. If impurities adhere to the inside of the valve, they will cause long-term friction against the sealing surface and valve stem, leading to increased mechanical wear, shortening the valve's maintenance cycle and overall lifespan, which requires improvement. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wellhead high-pressure valve to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: a wellhead high-pressure valve, including a valve assembly, the valve assembly consisting of a valve body, a ball, a valve stem, a sealing assembly and an actuating structure, a filter tank at the right end of the valve assembly, a filter cylinder movably fitted inside the filter tank, a flange fixedly fitted on the top of the outer wall of the filter tank, the filter tank and the flange being integrally formed, a sealing cover overlapping the top of the filter tank, two connecting rods symmetrically fixedly connected to the bottom of the sealing cover, a fixing frame fixedly connected to the top of the filter cylinder, the lower part of the outer wall of the connecting rod movably fitted inside the fixing frame, an external thread opening on the lower part of the outer wall of the connecting rod, a nut threadedly connected to the lower part of the outer wall of the connecting rod, the top of the nut overlapping the top of the inner wall of the fixing frame, a positioning block fixedly fitted on the outer wall of the connecting rod, the bottom of the positioning block overlapping the top of the fixing frame.

[0005] Furthermore, the ball is rotatably mounted inside the valve body, the bottom end of the valve stem is fixedly mounted at the middle of the top of the ball, the bottom of the sealing assembly is fixedly connected to the middle of the top of the valve body, the valve stem is rotatably mounted at the top of the sealing assembly, and the bottom of the actuating structure is fixedly mounted at the top of the sealing assembly.

[0006] Furthermore, the left end of the valve body is the liquid outlet, the right end of the valve body is the liquid inlet, the left side of the filter tank is fixedly installed at the liquid inlet of the valve body, the filter tank has symmetrical openings on both sides, and the right side of the filter tank is fixedly installed with a water inlet pipe.

[0007] Furthermore, a rectangular limiting block is fixedly connected to the middle of the bottom of the filter cartridge, and a limiting groove is opened in the middle of the bottom of the inner wall of the filter tank, with the outer wall of the rectangular limiting block inserted into the inside of the limiting groove.

[0008] Furthermore, the flange and the sealing cover are connected by multiple bolts, and a metal sealing ring is fixedly connected to the bottom of the sealing cover. The outer wall of the metal sealing ring is movably fitted onto the top inside the filter tank.

[0009] Furthermore, a handle is fixedly installed in the middle of the top of the sealing cover, a sealing ring is fixedly connected to the bottom of the sealing cover, an annular sealing groove is opened on the top of the filter tank, and the outer wall of the sealing ring is movably fitted inside the annular sealing groove.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] 1. This utility model, by employing a combination of a filter tank, filter cartridge, port, annular sealing groove, flange, sealing cover, metal sealing ring, sealing ring, and bolts, facilitates the filtration of impurities and solid particles in the medium, preventing impurities from entering the valve body and causing accelerated mechanical wear, shortening the valve maintenance cycle and overall lifespan, thereby improving the service life of the valve components.

[0012] 2. This utility model uses a combination of a filter tank, filter cartridge, limiting groove, flange, rectangular limiting block, sealing cover, bolt, handle, fixing frame, connecting rod, nut and positioning block to facilitate the disassembly and assembly of the filter cartridge, thereby allowing for the cleaning of impurities inside the filter cartridge or the replacement of the filter cartridge. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0015] Figure 3 This is a cross-sectional schematic diagram of the filter tank, flange, sealing cover, metal sealing ring, and sealing ring of this utility model.

[0016] Figure 4 This is a cross-sectional view of the filter tank, flange, sealing cover, metal sealing ring, and sealing ring of this utility model from another perspective.

[0017] Figure 5 This is a cross-sectional view of the filter tank structure of this utility model.

[0018] Figure 6This is an exploded view of the structure of the filter tank, filter cartridge, fixing frame, connecting rod, sealing cover, metal sealing ring, sealing ring and bolts of this utility model.

[0019] The attached figures are labeled as follows: 1. Valve assembly; 11. Valve body; 12. Ball; 13. Valve stem; 14. Sealing assembly; 15. Actuating structure; 2. Filter tank; 21. Filter cartridge; 211. Port; 212. Limiting groove; 213. Annular sealing groove; 22. Flange; 221. Rectangular limiting block; 23. Sealing cover; 231. Metal sealing ring; 232. Sealing ring; 24. Bolt; 25. Handle; 26. Fixing bracket; 27. Connecting rod; 28. Nut; 29. ​​Positioning block; 3. Inlet pipe. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The wellhead high-pressure valve involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example 1:

[0022] like Figure 1-6 As shown, a wellhead high-pressure valve includes a valve assembly 1, which consists of a valve body 11, a ball 12, a valve stem 13, a sealing assembly 14, and an actuating structure 15. A filter tank 2 is provided at the right end of the valve assembly 1. A filter cylinder 21 is movably sleeved inside the filter tank 2. A rectangular limiting block 221 is fixedly connected to the middle of the bottom of the filter cylinder 21. A limiting groove 212 is opened in the middle of the bottom of the inner wall of the filter tank 2. The outer wall of the rectangular limiting block 221 is inserted into the inside of the limiting groove 212. The setting of the rectangular limiting block 221 and the limiting groove 212 facilitates the limiting of the bottom of the filter cylinder 21, increasing the stability of the filter cylinder 21 inside the filter tank 2. When the medium enters the filter tank 2, it can filter impurities and solid particles through the filter cylinder 21, and the medium then flows into the valve body 11.

[0023] A flange 22 is fixedly fitted to the top of the outer wall of the filter tank 2. The filter tank 2 and the flange 22 are integrally formed. A sealing cover 23 overlaps the top of the filter tank 2. Multiple bolts 24 are threaded between the flange 22 and the sealing cover 23. The multiple bolts 24 facilitate the fixed connection between the sealing cover 23 and the flange 22.

[0024] A metal sealing ring 231 is fixedly connected to the bottom of the sealing cover 23. The outer wall of the metal sealing ring 231 is movably fitted inside the top of the filter tank 2. A handle 25 is fixedly installed in the middle of the top of the sealing cover 23. A sealing ring 232 is fixedly connected to the bottom of the sealing cover 23. An annular sealing groove 213 is opened on the top of the filter tank 2. The outer wall of the sealing ring 232 is movably fitted inside the annular sealing groove 213. The metal sealing ring 231 is used to increase the sealing performance between the sealing cover 23 and the inside of the filter tank 2. The sealing performance between the sealing cover 23 and the filter tank 2 is further improved by the cooperation of the sealing ring 232 and the annular sealing groove 213.

[0025] Two connecting rods 27 are symmetrically fixedly connected to the bottom of the sealing cover 23. A fixing frame 26 is fixedly connected to the top of the filter cartridge 21. The lower part of the outer wall of the connecting rod 27 is movably sleeved inside the fixing frame 26. The lower part of the outer wall of the connecting rod 27 has an external thread. A nut 28 is threadedly connected to the lower part of the outer wall of the connecting rod 27. The top of the nut 28 overlaps the top of the inner wall of the fixing frame 26. A positioning block 29 is fixedly sleeved on the outer wall of the connecting rod 27. The bottom of the positioning block 29 overlaps the top of the fixing frame 26. The setting of the fixing frame 26, connecting rods 27, nuts 28 and positioning blocks 29 facilitates the disassembly and assembly of the filter cartridge 21 and the sealing cover 23, and facilitates the cleaning of impurities inside the filter cartridge 21 or the replacement of the filter cartridge 21.

[0026] The left end of the valve body 11 is the liquid outlet, and the right end of the valve body 11 is the liquid inlet. The left side of the filter tank 2 is fixedly installed at the liquid inlet of the valve body 11. The filter tank 2 has symmetrical openings 211 on both sides. The right side of the filter tank 2 is fixedly installed with a water inlet pipe 3. Both the liquid outlet of the valve body 11 and the right end of the water inlet pipe 3 are fixedly installed with connecting flanges, which can be connected to external pipelines.

[0027] Example 2:

[0028] like Figure 1-6 As shown, the ball 12 is rotatably mounted inside the valve body 11, the bottom end of the valve stem 13 is fixedly mounted on the middle of the top of the ball 12, the bottom of the sealing assembly 14 is fixedly connected to the middle of the top of the valve body 11, the valve stem 13 is rotatably mounted on the top of the sealing assembly 14, and the bottom of the actuating structure 15 is fixedly mounted on the top of the sealing assembly 14. The valve body 11 is the main body of the valve assembly 1, providing a channel for fluid to pass through. The ball 12 is the core rotating component that controls the flow of fluid, and the valve is opened and closed by rotation. The actuating structure 15 is the mechanism that drives the ball 12 to rotate, and can be a valve worm gear head structure. The top end of the valve stem 13 is connected to the driving end of the actuating structure 15. The actuating structure 15 controls the rotation of the ball 12 through the valve stem 13. The actuating structure 15 can be in different forms such as manual, electric, or pneumatic. The valve in this application is a high-pressure ball valve.

[0029] In summary, as Figure 1-6 As shown, this type of high-pressure wellhead valve, during use, allows the medium to flow into the filter tank 2 through the inlet pipe 3, be filtered by the filter cartridge 21, and then flow into the valve body 11. To replace or clean the filter cartridge 21, first remove the bolts 24 between the flange 22 and the sealing cover 23, then move the sealing cover 23 upwards. The sealing cover 23, through the connecting rod 27 and the fixing bracket 26, moves the filter cartridge 21 out of the filter tank 2, allowing for cleaning of the impurities inside the filter cartridge 21. To replace the filter cartridge 21, unscrew the nut 28 and separate the connecting rod 27 from the fixing bracket 26, allowing for disassembly of the filter cartridge 21. Then, insert the connecting rod 27 at the bottom of the sealing cover 23 into the fixing bracket 26 at the top of the new filter cartridge 21, and... The top of the fixing bracket 26 overlaps the bottom of the positioning block 29, and the nut 28 is screwed onto the lower part of the outer wall of the connecting rod 27, thereby fixing the fixing bracket 26 and the connecting rod 27 together. Then, the filter cartridge 21 is placed inside the filter tank 2, and the bottom of the rectangular limiting block 221 is inserted into the limiting groove 212, thereby limiting the bottom of the filter cartridge 21. At the same time, the sealing cover 23 is moved to the top of the filter tank 2, and the metal sealing ring 231 is placed inside the upper part of the filter tank 2, and the sealing ring 232 is placed inside the annular sealing groove 213, thereby sealing the sealing cover 23 and the filter tank 2. Then, the flange 22 and the sealing cover 23 are fixed together with bolts 24, thus completing the fixed installation of the filter cartridge 21.

[0030] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wellhead high-pressure valve, comprising a valve assembly (1), characterized in that, The valve assembly (1) consists of a valve body (11), a ball (12), a valve stem (13), a sealing assembly (14), and an actuating structure (15). A filter tank (2) is provided at the right end of the valve assembly (1). A filter cylinder (21) is movably fitted inside the filter tank (2). A flange (22) is fixedly fitted to the top of the outer wall of the filter tank (2). The filter tank (2) and the flange (22) are integrally formed. A sealing cover (23) overlaps the top of the filter tank (2). Two sealing covers (23) are symmetrically fixedly connected to the bottom of the sealing cover (23). A connecting rod (27) is fixedly connected to the top of the filter cartridge (21) and a fixing frame (26). The lower part of the outer wall of the connecting rod (27) is movably sleeved inside the fixing frame (26). The lower part of the outer wall of the connecting rod (27) is provided with an external thread. The lower part of the outer wall of the connecting rod (27) is threaded with a nut (28). The top of the nut (28) overlaps the top of the inner wall of the fixing frame (26). The outer wall of the connecting rod (27) is fixedly sleeved with a positioning block (29). The bottom of the positioning block (29) overlaps the top of the fixing frame (26).

2. The wellhead high-pressure valve according to claim 1, characterized in that: The ball (12) is rotatably mounted inside the valve body (11), the bottom end of the valve stem (13) is fixedly mounted at the middle of the top of the ball (12), the bottom of the sealing assembly (14) is fixedly connected to the middle of the top of the valve body (11), the valve stem (13) is rotatably mounted at the top of the sealing assembly (14), and the bottom of the actuating structure (15) is fixedly mounted at the top of the sealing assembly (14).

3. A wellhead high-pressure valve according to claim 1, characterized in that: The left end of the valve body (11) is the liquid outlet, the right end of the valve body (11) is the liquid inlet, the left side of the filter tank (2) is fixedly installed at the liquid inlet of the valve body (11), the filter tank (2) has symmetrical openings (211) on both sides, and the right side of the filter tank (2) is fixedly installed with a water inlet pipe (3).

4. A wellhead high-pressure valve according to claim 1, characterized in that: A rectangular limiting block (221) is fixedly connected to the middle of the bottom of the filter cartridge (21), and a limiting groove (212) is opened in the middle of the bottom of the inner wall of the filter tank (2). The outer wall of the rectangular limiting block (221) is inserted into the inside of the limiting groove (212).

5. A wellhead high-pressure valve according to claim 1, characterized in that: The flange (22) and the sealing cover (23) are connected by multiple bolts (24). A metal sealing ring (231) is fixedly connected to the bottom of the sealing cover (23). The outer wall of the metal sealing ring (231) is movably sleeved on the top inside the filter tank (2).

6. A wellhead high-pressure valve according to claim 1, characterized in that: A handle (25) is fixedly installed in the middle of the top of the sealing cover (23), and a sealing ring (232) is fixedly connected to the bottom of the sealing cover (23). An annular sealing groove (213) is opened on the top of the filter tank (2), and the outer wall of the sealing ring (232) is movably fitted inside the annular sealing groove (213).

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