High pressure combination valve for oil well head

Abstract

The utility model discloses an oil production well mouth high pressure combination valve relates to high pressure combination valve technical field, including combination valve body, set up in the first valve body connecting pipe of combination valve body one side for oil supply and set up the second valve body connecting pipe of first valve body connecting pipe one end, the top of combination valve body is provided with the blowout preventer connecting port for connecting, first valve body connecting pipe and second valve body connecting pipe one end all are equipped with pressure gauge. Through setting up cleaning tank and filter plate in the bottom of combination valve body, make can filter the extracted crude oil, avoid the internal silt and cause the combination valve inside to produce the blockage, simultaneously through the setting of arc push board, make can limit two first ring, and push to the limiting piece, make can the joint of positioning piece, thereby can the support of first valve body connecting pipe and second valve body connecting pipe, make not only have good cleaning effect, can also have good support effect.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure combined valve technology, specifically a high-pressure combined valve for oil wellheads. Background Technology

[0002] High-pressure combination valves are key components in oil wellhead equipment. They are mainly used to control and regulate wellhead pressure and flow, as well as to prevent accidents such as blowouts. They typically consist of multiple valves, pressure gauges, and safety devices. They enable precise control of the wellhead fluid and, by adjusting the valve opening, control the wellhead pressure within a safe range, preventing equipment damage or safety accidents caused by excessive pressure.

[0003] When using the aforementioned high-pressure combination valve at the oil wellhead, it is necessary to extract crude oil from the main pipeline at the bottom. However, during crude oil extraction, impurities such as mud and sand are also extracted, which can easily lead to accumulation inside the high-pressure combination valve at the oil wellhead. This requires multiple internal cleanings, making the high-pressure combination valve at the oil wellhead inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure combination valve for oil wellheads to solve the problem mentioned in the background art that high-pressure combination valves for oil wellheads are prone to internal blockage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure combined valve for oil wellhead, comprising a combined valve body, a first valve body connecting pipe for oil supply disposed on one side of the combined valve body, and a second valve body connecting pipe disposed at one end of the first valve body connecting pipe. The top of the combined valve body is provided with a blowout preventer connection port for connection. A pressure gauge is installed at one end of both the first valve body connecting pipe and the second valve body connecting pipe, and a shut-off valve and a manual regulating valve for opening and closing are installed between the first valve body connecting pipe and the second valve body connecting pipe.

[0006] The bottom of the combined valve body is provided with a welded cleaning box. Both the upper and lower ends of the cleaning box are provided with through grooves that match the interior of the combined valve body. The interior of the cleaning box is slidably connected with a filter plate for filtering mud and sand, and a disassembly component for removing and cleaning is provided on one side of the cleaning box.

[0007] Preferably, the disassembly assembly includes a sealing plate connected to one side of the filter plate, and a locking bolt is threaded between the cleaning box and the sealing plate.

[0008] Preferably, the sealing plate has welded triangular blocks on both sides, a movable plate at one end of the triangular block, a welded connecting plate at the top of the movable plate, symmetrically distributed fixing blocks at the top of the cleaning box, a stabilizing rod at one end of the fixing block for providing stable sliding of the connecting plate, and an arc-shaped push plate at the top of the fixing block.

[0009] Preferably, the bottom end of the second valve body connecting pipe is provided with a positioning block for welding connection, and both sides of the second valve body connecting pipe are provided with a first collar for sleeve connection, and the top end of the first collar is provided with a second collar connected by a connecting rod.

[0010] Preferably, one side of one of the second collars is provided with a plug-in assembly, the plug-in assembly including a locking block welded to one side of the second collar, one end of the locking block being provided with a rubber block for engaging connection, and the other second collar having a reserved hole inside for engaging with the locking block.

[0011] Preferably, a fixing plate is provided on one side of the inner side of the first collar, the fixing plate is L-shaped, a limiting block is provided on the side of the first collar near the fixing plate, and a limiting spring is connected between the fixing plate and the limiting block.

[0012] Preferably, the cleaning box is provided with a sealing assembly on the side near the sealing plate. The sealing assembly includes a sealing ring disposed on one side of the sealing plate, and a sealing groove matching the sealing ring is provided inside the cleaning box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When the oil wellhead high-pressure combined valve extracts crude oil from the main pipeline and transports it through the first valve body connecting pipe and the second valve body connecting pipe, the crude oil can be filtered by a filter plate set inside the bottom cleaning box. This prevents impurities such as mud and sand from entering the cleaning box. The filter plate can be removed and reinstalled inside the cleaning box to continue filtration. As the filter plate moves, the sealing plate moves and pushes the moving plate through the triangular block. When the moving plate moves, it restricts the first set of rings by the connecting plate and the arc-shaped push plate. As the arc-shaped push plate moves, it pushes the limiting block, so that the limiting block can cooperate with the positioning block to lock the first set of rings. At the same time, the two second sets of rings are also locked by the locking block, so as to support the first valve body connecting pipe and the second valve body connecting pipe. This can prevent bending caused by excessive flow velocity. Therefore, the oil wellhead high-pressure combined valve not only has a good filtration effect but also a good support effect when in use. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional sectional view of the cleaning box of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the sealing plate of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the first ring of this utility model.

[0018] In the diagram: 1. Combined valve body; 2. First valve body connecting pipe; 3. Second valve body connecting pipe; 4. Blowout preventer connection port; 5. Pressure gauge; 6. Cleaning box; 7. Through groove; 8. Filter plate; 9. Sealing plate; 10. Locking bolt; 11. Triangular block; 12. Moving plate; 13. Connecting plate; 14. Fixing block; 15. Stabilizing rod; 16. Arc-shaped push plate; 17. Positioning block; 18. First collar; 19. Second collar; 20. Clamping block; 21. Fixing plate; 22. Limiting block; 23. Limiting spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 The present invention provides a technical solution: a high-pressure combination valve for oil wellhead, comprising a combination valve body 1, a first valve body connecting pipe 2 for oil supply disposed on one side of the combination valve body 1, and a second valve body connecting pipe 3 disposed at one end of the first valve body connecting pipe 2. The top of the combination valve body 1 is provided with a blowout preventer connection port 4 for connection. A pressure gauge 5 is installed at one end of both the first valve body connecting pipe 2 and the second valve body connecting pipe 3, and a shut-off valve and a manual regulating valve for opening and closing are installed between the first valve body connecting pipe 2 and the second valve body connecting pipe 3.

[0021] The bottom of the combined valve body 1 is provided with a welded cleaning box 6. Both the upper and lower ends of the cleaning box 6 are provided with through grooves 7 that match the interior of the combined valve body 1. The interior of the cleaning box 6 is slidably connected with a filter plate 8 for filtering mud and sand. A disassembly assembly for removing and cleaning is provided on one side of the cleaning box 6. The disassembly assembly includes a sealing plate 9 connected to one side of the filter plate 8. Locking bolts 10 are threadedly connected between the cleaning box 6 and the sealing plate 9. The number of locking bolts 10 is set to two sets of four.

[0022] The high-pressure combination valve at the oil wellhead uses stainless steel sintered metal mesh for the filter plate 8, which prevents damage caused by excessive flow velocity.

[0023] exist Figure 3 and Figure 4 In the middle, the sealing plate 9 has a welded triangular block 11 on both sides, a movable plate 12 at one end of the triangular block 11, a welded connecting plate 13 at the top of the movable plate 12, and a sliding groove for sliding connection inside the connecting plate 13. The top of the cleaning box 6 has symmetrically distributed fixing blocks 14, a stabilizing rod 15 at one end of the fixing block 14 for providing stable sliding of the connecting plate 13, and an arc-shaped push plate 16 at the top of the fixing block 14. The bottom of the second valve body connecting pipe 3 has a welded positioning block 17, and the two sides of the second valve body connecting pipe 3 have a first collar 18 for sleeve connection. The top of the first collar 18 has a second collar 19 connected by a connecting rod.

[0024] The high-pressure combination valve at the wellhead of this oil production well, through the setting of the first collar 18 and the second collar 19, can prevent the connecting bolts at the flange connection from loosening or bending due to excessive flow velocity between the first valve body connecting pipe 2 and the second valve body connecting pipe 3.

[0025] exist Figure 3 and Figure 4 In the first sleeve ring 18, a plug-in assembly is provided on one side of the second sleeve ring 19. The plug-in assembly includes a locking block 20 welded to one side of the second sleeve ring 19. One end of the locking block 20 is provided with a rubber block for engaging. The other second sleeve ring 19 has a reserved hole for engaging with the locking block 20. A fixing plate 21 is provided on one side of the first sleeve ring 18. The fixing plate 21 is L-shaped. A limiting block 22 is provided on the side of the first sleeve ring 18 near the fixing plate 21. A limiting spring 23 is connected between the fixing plate 21 and the limiting block 22. A sealing assembly is provided on the side of the cleaning box 6 near the sealing plate 9. The sealing assembly includes a sealing ring on one side of the sealing plate 9. A sealing groove matching the sealing ring is provided inside the cleaning box 6.

[0026] In this high-pressure combination valve for oil wellheads, the locking blocks 20 are symmetrically distributed on one side of a second ring 19, allowing the second ring 19 to be quickly engaged through the internal pre-drilled holes.

[0027] This high-pressure combination valve at the oil wellhead, when extracting crude oil from the main pipeline and transporting it through the first valve body connecting pipe 2 and the second valve body connecting pipe 3, can filter the crude oil through the filter plate 8 installed inside the bottom cleaning box 6, thereby preventing impurities such as mud and sand from entering the cleaning box 6. Simultaneously, tightening the locking bolt 10 allows it to separate from the cleaning box 6, thus freeing the sealing plate 9 from its restraint. The sealing plate 9 can then be pulled, causing it to move and simultaneously move the connected filter plate 8 within the cleaning box 6. Simultaneously, when the sealing plate 9 moves, it can move the triangular blocks 11 connected on both sides, so that the triangular blocks 11 can separate from the moving plate 12 after moving, allowing the moving plate 12 to fall without restraint. Then, the moving plate 12 can move the arc-shaped push plate 16 through the connecting plate 13, so that the arc-shaped push plate 16 can lose its pressure on the limiting block 22 after moving, allowing the limiting block 22 to separate from the positioning block 17 during movement, allowing the first ring 18 to lose restraint. Then, the first ring 18, together with the second ring 1... Pulling 9 allows the two first rings 18 and second rings 19 to be removed simultaneously. This allows the first rings 18 and second rings 19 to be separated during the cleaning of the filter plate 8, enabling the determination of whether the connecting bolts at the flange connection are loose. Conversely, the cleaned filter plate 8 is reinstalled inside the cleaning box 6 to continue filtration. As the filter plate 8 moves, the sealing plate 9 moves, pushing the moving plate 12 via the triangular block 11. This allows the moving plate 12 to move via the connecting plate. The arc-shaped push plate 16 restricts the first set of rings 18, and as the arc-shaped push plate 16 moves, it pushes the limiting block 22, so that the limiting block 22 can cooperate with the positioning block 17 to lock the first set of rings 18. At the same time, the two second sets of rings 19 are also locked by the locking block 20, so as to support the first valve body connecting pipe 2 and the second valve body connecting pipe 3, thereby avoiding bending caused by excessive flow velocity. This makes the high-pressure combination valve at the oil wellhead not only have a good filtration effect but also a good support effect when in use.

[0028] In summary, the high-pressure combination valve is a key component in oil wellhead equipment, mainly used to control and regulate wellhead pressure and flow, and to prevent accidents such as blowouts. By setting a cleaning box 6 and a filter plate 8 at the bottom of the combination valve body 1, the extracted crude oil can be filtered to prevent internal mud and sand from causing blockage inside the combination valve. At the same time, the arc-shaped push plate 16 can limit the two first rings 18 and push the limit block 22 to lock the positioning block 17, thereby supporting the first valve body connecting pipe 2 and the second valve body connecting pipe 3. This not only has a good cleaning effect but also a good supporting effect. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure combination valve for oil wellheads, comprising a combination valve body (1), a first valve body connecting pipe (2) for oil supply disposed on one side of the combination valve body (1), and a second valve body connecting pipe (3) disposed at one end of the first valve body connecting pipe (2), characterized in that: The top of the combined valve body (1) is provided with a blowout preventer connection port (4) for connection. A pressure gauge (5) is installed at one end of the first valve body connecting pipe (2) and the second valve body connecting pipe (3). A shut-off valve and a manual regulating valve for opening and closing are installed between the first valve body connecting pipe (2) and the second valve body connecting pipe (3). The bottom end of the combined valve body (1) is provided with a welded cleaning box (6). Both the upper and lower ends of the cleaning box (6) are provided with through grooves (7) that match the interior of the combined valve body (1). The interior of the cleaning box (6) is slidably connected with a filter plate (8) for filtering mud and sand, and a disassembly assembly for removing and cleaning is provided on one side of the cleaning box (6).

2. The high-pressure combination valve for oil wellheads according to claim 1, characterized in that: The disassembly assembly includes a sealing plate (9) connected to one side of the filter plate (8), and a locking bolt (10) is threaded between the cleaning box (6) and the sealing plate (9).

3. The high-pressure combination valve for oil wellheads according to claim 2, characterized in that: Both sides of the sealing plate (9) are provided with welded triangular blocks (11), one end of the triangular block (11) is provided with a movable plate (12), the top of the movable plate (12) is provided with a welded connecting plate (13), the top of the cleaning box (6) is provided with symmetrically distributed fixing blocks (14), one end of the fixing block (14) is provided with a stabilizing rod (15) for providing stable sliding of the connecting plate (13), and the top of the fixing block (14) is provided with an arc-shaped push plate (16).

4. The high-pressure combination valve for oil wellheads according to claim 1, characterized in that: The bottom end of the second valve body connecting pipe (3) is provided with a positioning block (17) for welding connection. Both sides of the second valve body connecting pipe (3) are provided with a first collar (18) for sleeve connection. The top end of the first collar (18) is provided with a second collar (19) connected by a connecting rod.

5. The high-pressure combination valve for oil wellheads according to claim 4, characterized in that: A plug-in assembly is provided on one side of one of the second collars (19). The plug-in assembly includes a locking block (20) welded to one side of the second collar (19). One end of the locking block (20) is provided with a rubber block for engaging connection. The other second collar (19) has a reserved hole inside for engaging with the locking block (20).

6. The high-pressure combination valve for oil wellheads according to claim 4, characterized in that: A fixing plate (21) is provided on one side of the inside of the first collar (18). The fixing plate (21) is L-shaped. A limiting block (22) is provided on the side of the first collar (18) near the fixing plate (21). A limiting spring (23) is connected between the fixing plate (21) and the limiting block (22).

7. The high-pressure combination valve for oil wellheads according to claim 2, characterized in that: The cleaning box (6) is provided with a sealing assembly on the side near the sealing plate (9). The sealing assembly includes a sealing ring on one side of the sealing plate (9), and a sealing groove matching the sealing ring is provided inside the cleaning box (6).

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