A seal assembly and a wellhead safety valve

Abstract

The utility model relates to safe valve door technical field, concretely is a kind of sealing assembly and oil production well mouth safety valve, including valve, the top of valve is provided with fixed part, the middle part of fixed part is provided with protective shell;Beneficial effect is: through the cooperation of valve and protective shell, fixed part, sealing ring is clamped into sealing ring fixed groove, make protective shell main part the component exposed in the pipeline outside valve main body is wrapped inside, realize the comprehensive protection to valve, simultaneously, triangular clamping block is inserted into the inner wall of slot, make clamping block slide along the inclined plane of triangular clamping block, until reach the bottom of triangular clamping block, through spring pull sliding rod, make triangular clamping block clamp clamping block, clamp rod extrude clamping strip, protective shell main part is fixed in flange fixed disc top, improve the sealing property of device, the installation and fixation of protective shell main part are convenient.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically a sealing component and an oil wellhead safety valve. Background Technology

[0002] Oil well safety valves are critical pieces of equipment designed specifically for the oil and gas extraction industry. They are primarily used to control the flow of fluids in oil wells, ensuring the rapid shut-off of fluid channels in abnormal situations to prevent accidents. Their importance is self-evident; they are considered the "guardians" of oil wells. However, in the harsh working environment of oil fields, valves are highly susceptible to corrosion from wind, sand, and rain, severely impacting their service life and reliability.

[0003] In existing technologies, coating protection is commonly used to address valve corrosion. Coating protection involves applying a layer of anti-corrosion material, such as epoxy resin, to the valve's outer surface. This can isolate the valve from external corrosive media to some extent. However, over time and due to environmental factors, the coating is prone to wear and peeling, significantly reducing its protective effect. Furthermore, the application and maintenance of coatings are costly, requiring regular inspection and recoating, increasing operating costs. Utility Model Content

[0004] The purpose of this invention is to provide a sealing component and a safety valve for oil wellheads to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing component and an oil wellhead safety valve, comprising a valve, wherein a fixing member is provided on the top of the valve, and a protective shell is provided in the middle of the fixing member;

[0006] The valve includes a valve body, a flange fixing plate is provided on the top of the valve body, and a sealing ring fixing groove is provided on the top of the flange fixing plate. The protective shell includes a protective shell body, and a sealing ring is provided at the bottom of the protective shell body. The sealing ring is snapped into the inner wall of the sealing ring fixing groove.

[0007] Preferably, the fastener includes two fixing blocks, which are symmetrically arranged at the bottom of the flange fixing plate, and a limiting groove is formed on the top of the fixing block.

[0008] Preferably, the limiting groove is slidably connected to an anti-detachment block, and the top of the anti-detachment block is fixedly connected to a triangular locking block, the upper and lower sides of the triangular locking block being set as inclined surfaces.

[0009] Preferably, a spring is fixedly connected to one side of each of the two anti-detachment blocks, and a sliding rod is fixedly connected to the opposite side of each of the two anti-detachment blocks. A clamping rod is fixedly connected to the end of the sliding rod away from the anti-detachment block.

[0010] Preferably, the protective shell body has a fixing box fixedly connected to both sides, the bottom of the fixing box has a slot, and the inner wall of the slot has a locking block fixedly connected to it.

[0011] Preferably, the two sides of the card block are slidably connected to the triangular card block, the two sides of the protective shell body are fixedly connected to the card strips, and the top of the card strips is slidably connected to the clamping rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model discloses a sealing component and a safety valve for oil wellheads. The valve, protective shell, and fixing components work together to insert a sealing ring into a sealing ring fixing groove. This allows the protective shell to enclose the valve body components exposed outside the pipeline, providing comprehensive protection for the valve. Simultaneously, a triangular locking block is inserted into the inner wall of the slot, sliding along its inclined surface until it reaches the bottom. A spring pulls a sliding rod, clamping the triangular locking block. The clamping rod then presses against the locking strip, fixing the protective shell body to the top of the flange fixing plate. This improves the device's sealing performance and facilitates the installation and fixation of the protective shell body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the valve structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the bottom structure of the protective shell of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the fastener of this utility model.

[0018] In the diagram: 1. Valve; 2. Protective shell; 3. Fixing component; 11. Valve body; 12. Flange fixing plate; 13. Sealing ring fixing groove; 21. Protective shell body; 22. Sealing ring; 23. Locking strip; 24. Fixing box; 25. Slot; 26. Locking block; 31. Fixing block; 32. Limiting groove; 33. Sliding rod; 34. Anti-detachment block; 35. Triangular locking block; 36. Spring; 37. Clamping rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please see the appendix Figure 1-4 This application provides the following technical solutions.

[0021] A sealing assembly and a safety valve for an oil wellhead include a valve 1, a fixing member 3 on the top of the valve 1, and a protective shell 2 in the middle of the fixing member 3; the valve 1 includes a valve body 11, a flange fixing plate 12 on the top of the valve body 11, a sealing ring fixing groove 13 on the top of the flange fixing plate 12, and a protective shell 2 including a protective shell body 21, a sealing ring 22 on the bottom of the protective shell body 21, the sealing ring 22 being snapped into the inner wall of the sealing ring fixing groove 13.

[0022] It should be noted that during installation, the staff will fasten the protective shell body 21 onto the top of the flange fixing plate 12, and wrap the part of the valve body 11 that extends beyond the top of the flange fixing plate 12 inside it, so that the sealing ring 22 is inserted into the inner wall of the sealing ring fixing groove 13, thereby sealing and protecting the part of the valve body 11 that passes through the flange fixing plate 12.

[0023] The fastener 3 includes two fixing blocks 31, which are symmetrically arranged at the bottom of the flange fixing plate 12. A limiting groove 32 is formed on the top of each fixing block 31. An anti-detachment block 34 is slidably connected inside the limiting groove 32. A triangular locking block 35 is fixedly connected to the top of each anti-detachment block 34. The upper and lower sides of the triangular locking block 35 are set as inclined surfaces. A spring 36 is fixedly connected to one side of each of the two anti-detachment blocks 34. A sliding rod 33 is fixedly connected to the opposite side of each of the two anti-detachment blocks 34. A clamping rod 37 is fixedly connected to the end of the sliding rod 33 away from the anti-detachment block 34. Fixing boxes 24 are fixedly connected to both sides of the protective shell body 21. A slot 25 is formed at the bottom of the fixing box 24. A locking block 26 is fixedly connected to the inner wall of the slot 25. The two sides of the locking block 26 are slidably connected to the triangular locking block 35. A locking strip 23 is fixedly connected to both sides of the protective shell body 21. The top of the locking strip 23 is slidably connected to the clamping rod 37.

[0024] It should be noted that during installation, the triangular locking block 35 is inserted into the fixing box 24 and slides inside the slot 25. The top slope of the triangular locking block 35 is squeezed by the locking block 26, causing the spring 36 to extend and generate elastic potential energy, pushing the anti-detachment block 34 to move along the inner wall of the limiting groove 32. This causes the sliding rod 33 to drive the clamping rod 37 to move outward until the locking block 26 reaches the lower slope of the triangular locking block 35. The spring 36 releases its elastic potential energy, pulling the anti-detachment block 34 to slide along the inner wall of the limiting groove 32. This causes the sliding rod 33 to pull the clamping rod 37 to squeeze the upper slope of the locking strip 23, causing the locking strip 23 to press down and press the sealing ring 22 to fit against the inner wall of the sealing ring fixing groove 13. At the same time, the anti-detachment block 34 drives the triangular locking block 35 to move, causing the locking block 26 to slide on the bottom slope of the triangular locking block 35. This pulls the fixing box 24 and causes the protective shell body 21 to fit against the flange fixing plate 12.

[0025] During installation, the worker attaches the protective shell body 21 to the top of the flange mounting plate 12, enclosing the part of the valve body 11 that extends beyond the top of the flange mounting plate 12 inside it, so that the sealing ring 22 is engaged with the inner wall of the sealing ring fixing groove 13. At the same time, the triangular locking block 35 is inserted into the fixing box 24 and slides inside the slot 25. The top inclined surface of the triangular locking block 35 is compressed by the locking block 26, causing the spring 36 to extend and generate elastic potential energy, pushing the anti-disengagement block 34 to move along the inner wall of the limiting groove 32, causing the sliding rod 33 to drive the clamping rod 37 to move outward until the locking block 26 reaches the end. On the lower inclined surface of the triangular locking block 35, the spring 36 releases elastic potential energy, pulling the anti-detachment block 34 to slide along the inner wall of the limiting groove 32, driving the sliding rod 33 to pull the clamping rod 37 to squeeze the upper inclined surface of the locking strip 23, so that the locking strip 23 squeezes the sealing ring 22 downward to fit against the inner wall of the sealing ring fixing groove 13. At the same time, the anti-detachment block 34 drives the triangular locking block 35 to move, so that the locking block 26 slides on the bottom inclined surface of the triangular locking block 35, pulling the fixing box 24 to drive the protective shell body 21 to fit against the flange fixing plate 12, sealing and protecting the part of the valve body 11 that passes through the flange fixing plate 12.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing assembly, comprising a valve (1), wherein a fixing member (3) is provided on the top of the valve (1), and a protective shell (2) is provided in the middle of the fixing member (3). Its features are: The valve (1) includes a valve body (11), a flange fixing plate (12) is provided on the top of the valve body (11), a sealing ring fixing groove (13) is provided on the top of the flange fixing plate (12), and the protective shell (2) includes a protective shell body (21), a sealing ring (22) is provided at the bottom of the protective shell body (21), and the sealing ring (22) is snapped into the inner wall of the sealing ring fixing groove (13).

2. A sealing assembly according to claim 1, characterized in that: The fastener (3) includes two fixing blocks (31), which are symmetrically arranged at the bottom of the flange fixing plate (12), and a limiting groove (32) is formed on the top of the fixing block (31).

3. A sealing assembly according to claim 2, characterized in that: The limiting groove (32) is slidably connected to an anti-detachment block (34), and a triangular locking block (35) is fixedly connected to the top of the anti-detachment block (34). The upper and lower sides of the triangular locking block (35) are set as inclined surfaces.

4. A sealing assembly according to claim 3, characterized in that: A spring (36) is fixedly connected to one side of each of the two anti-detachment blocks (34), and a sliding rod (33) is fixedly connected to the opposite side of each of the two anti-detachment blocks (34). A clamping rod (37) is fixedly connected to the end of the sliding rod (33) away from the anti-detachment block (34).

5. A sealing assembly according to claim 1, characterized in that: The protective shell body (21) is fixedly connected to two sides of a fixing box (24), and a slot (25) is provided at the bottom of the fixing box (24). A card block (26) is fixedly connected to the inner wall of the slot (25).

6. A sealing assembly according to claim 5, characterized in that: The two sides of the card block (26) are slidably connected to the triangular card block (35), and the two sides of the protective shell body (21) are fixedly connected to the card strip (23), and the top of the card strip (23) is slidably connected to the clamping rod (37).

7. A safety valve for oil wellheads, characterized in that: The wellhead safety valve includes a sealing assembly as described in any one of claims 1-6.

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