Oil resistant undersea valve rubber

Abstract

The utility model relates to a valve technical field, concretely relates to an oil-resistant submarine valve rubber. Including the rubber body of cylindrical shape, the concentricity of rubber body upper portion is equipped with the mounting hole, the concentricity of rubber body lower part is equipped with the round groove in, the concentricity is fixed with ring plate in round groove, the inner tube is fixed with ring plate lower extreme, the inner tube is fixed connection with rubber body, the outer edge of inner tube is fixed with the convex ring, the convex ring is embedded fixed in rubber body, the embedded fixed rebounding spare of rubber body, the utility model discloses through rigid support frame, elasticity rebound compensation, double locking installation, taper surface sealing optimization and composite anti -fatigue design, systematicity solves the sealing failure problem that rubber body softening leads to under high temperature and high pressure, has improved the reliability and service life of submarine valve under the harsh working condition such as petroleum drilling obviously.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an oil-resistant sea valve rubber sheet. Background Technology

[0002] In solids control systems for oil drilling projects, subsea valves are increasingly favored by customers due to their low manufacturing cost, ease of operation, and reliable sealing. However, when operating under high temperature and pressure, the rubber seals of subsea valves soften, making them prone to detaching from the mounting structure and losing their sealing function.

[0003] Patent document CN213452046U discloses a valve rubber with a combined structure, including a valve rubber body and a spring-loaded support. The valve rubber body is a circular solid structure, and the spring-loaded support is disposed within the valve rubber body. After the valve rubber is installed into the valve body, a clamping plate is used to fix the valve rubber to the bottom of the valve body. The clamping plate is placed inside the valve rubber and bolted to the bottom of the valve body. The edge of the clamping plate presses against the annular limiting part to achieve quick installation of the valve rubber on the valve body. However, relying solely on the clamping plate and the annular limiting part to stabilize the rubber is problematic. Under high temperature and high pressure environments, the rubber softens, and the annular limiting part of the rubber can easily detach from the clamping plate and the valve body, leading to sealing failure. Utility Model Content

[0004] The main purpose of this utility model is to provide an oil-resistant sea valve rubber that can improve installation stability and ensure the sealing performance of the rubber body under high temperature and high pressure conditions.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] An oil-resistant sea valve rubber sheet includes a cylindrical rubber body. The upper part of the rubber body has a concentric mounting hole, and the lower part of the rubber body has a concentric circular groove. A ring plate is concentrically fixed within the groove, and an inner cylinder is fixed to the lower end of the ring plate. The inner cylinder is fixedly connected to the rubber body, and a protruding ring is fixed to the outer edge of the inner cylinder. The protruding ring is embedded and fixed within the rubber body. A spring-loaded component is embedded and fixed within the rubber body. The spring-loaded component is made of elastic metal and includes an upper ring. A concentric cone is fixed to the lower end of the outer side of the upper ring. The diameter of the upper end of the cone is larger than the diameter of the lower end, and multiple long grooves are evenly distributed around the circumference of the cone.

[0007] Specifically, the lower outer side of the rubber body is machined with a conical surface.

[0008] Specifically, the rubber body, ring plate, inner cylinder, convex ring, and rebound component are integrally vulcanized.

[0009] Specifically, the upper end of the rubber body is concentrically provided with annular grooves.

[0010] Specifically, it also includes a valve stem that is connected to the rubber body, a pressure plate that is concentrically and fixedly sealed on the valve stem, a limiting ring that mates with the annular groove is fixed at the lower end of the pressure plate, and a nut is threadedly connected to the valve stem below the pressure plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The rubber body is formed by a concentric ring plate, inner cylinder, and convex ring structure, creating a multi-layered rigid support frame. This effectively limits the deformation of the rubber body towards the center after softening at high temperatures, preventing the rubber body from collapsing or detaching from its installation position. The rubber body, ring plate, inner cylinder, and rebound components are bonded together through a vulcanization process, enhancing the overall structural strength and resistance to deformation, and preventing failure due to material delamination.

[0013] 2. The tapered cylinder's upper-larger-lower-smaller structure, combined with evenly distributed circumferential grooves, causes elastic deformation in the area between adjacent grooves when the rebound element is compressed, providing a continuous outward radial elastic force and enhancing the sealing pressure of the rubber body against the valve seat. Under high temperature and pressure, the elasticity of the rebound element can dynamically compensate for material deformation when the rubber body softens, maintaining the contact pressure of the sealing surface. When the valve is closed, it assists the rubber body in resetting, reducing permanent deformation.

[0014] 3. The annular groove at the upper end of the rubber body cooperates with the limiting ring of the pressure plate to restrict the lateral displacement of the rubber body; the bottom of the rubber body is pressed by the nut at the end of the valve stem, which, combined with the sealing contact at the upper end of the pressure plate, forms a two-way clamp to prevent the rubber body from loosening from the installation structure. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the rubber body.

[0016] Figure 2 This is a schematic diagram showing the connection between the valve stem and the rubber body.

[0017] Figure 3 This is a schematic diagram showing the connection between the spring-loaded component and the ring plate.

[0018] Figure 4 This is a top view showing the connection between the springback component and the ring plate.

[0019] Figure 5 for Figure 4 Sectional view along the AA direction.

[0020] The parts in the attached diagram are named as follows: 1. Rubber body, 2. Ring plate, 3. Inner cylinder, 4. Convex ring, 5. Rebound component, 501. Upper ring, 502. Conical cylinder, 6. Long groove, 7. Ring groove, 8. Valve stem, 9. Pressure plate, 10. Limiting ring, 11. Conical surface, 12. Nut, 13. Mounting hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1: Refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, an oil-resistant sea valve rubber sheet includes a cylindrical rubber body 1. The upper part of the rubber body 1 has a concentric mounting hole 13, and the lower part of the rubber body 1 has a concentric circular groove. A ring plate 2 is concentrically fixed in the circular groove. An inner cylinder 3 is fixed at the lower end of the ring plate 2. The inner cylinder 3 is fixedly connected to the rubber body 1. A protruding ring 4 is fixed on the outer edge of the inner cylinder 3. The protruding ring 4 is embedded and fixed in the rubber body 1. A spring-loaded component 5 is embedded and fixed in the rubber body 1. The rubber body 1, the ring plate 2, the inner cylinder 3, the protruding ring 4, and the spring-loaded component 5 are integrally vulcanized and formed.

[0023] The spring-loaded component 5 is made of elastic metal material. The spring-loaded component 5 includes an upper ring 501. A cone 502 is concentrically fixed at the lower end of the outer side of the upper ring 501. The diameter of the upper end of the cone 502 is larger than the diameter of the lower end. Multiple long grooves 6 are evenly distributed around the circumference of the cone 502.

[0024] The lower outer side of the rubber body 1 is machined with a conical surface 11, which is used to seal with the valve seat inside the bottom valve body.

[0025] By setting a ring plate 2 and an inner cylinder 3 in the lower part of the rubber body 1, the support strength of the rubber body 1 can be improved, and the rubber body 1 can be prevented from softening and deforming under high temperature and high pressure environment and losing its sealing effect.

[0026] By setting a spring element 5 inside the rubber body 1, after the rubber body 1 part outside the spring element 5 is squeezed, the cone 502 part between the two adjacent long grooves 6 can deform. Under the elastic action of the cone 502 part between the two adjacent long grooves 6, the pressure of the rubber body 1 on the valve seat can be increased, and the sealing effect can be improved. When the bottom valve is opened, under the elastic action of the cone 502 part between the two adjacent long grooves 6, the rubber body 1 can be restored.

[0027] By setting the ring plate 2 and the inner cylinder 3, the rubber body 1 can be restricted from deforming towards its center after being squeezed, which can improve the sealing pressure of the rubber body 1 on the valve seat.

[0028] Example 2: Based on Example 1, referring to... Figure 2 As shown, the rubber body 1 has a concentric annular groove 7 at its upper end.

[0029] It also includes a valve stem 8 that is connected to the rubber body 1. A pressure plate 9 is concentrically and fixedly sealed on the valve stem 8. A limiting ring 10 that mates with the annular groove 7 is fixed at the lower end of the pressure plate 9. A nut 12 is threadedly connected to the valve stem 8 below the pressure plate 9.

[0030] The valve stem 8 portion below the pressure plate 9 passes through the mounting hole 13 and the inner hole of the ring plate 2. Then, a nut 12 is installed on the valve stem 8 below the ring plate 2 and tightened. The limiting ring 10 is located in the ring groove 7, and the pressure plate 9 is tightly pressed against the upper end of the rubber body 1, forming a sealed contact. After the rubber body 1 and valve seat are in sealed contact, the bottom valve can be effectively closed due to the sealed contact between the pressure plate 9 and the upper end of the rubber body 1.

[0031] 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 and improvements 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. An oil-resistant sea valve rubber sheet, comprising a cylindrical rubber body (1), characterized in that, The rubber body (1) has a concentric mounting hole (13) on the upper part and a concentric circular groove on the lower part of the rubber body (1). A ring plate (2) is concentrically fixed in the circular groove. An inner cylinder (3) is fixed at the lower end of the ring plate (2). The inner cylinder (3) is fixedly connected to the rubber body (1). A protruding ring (4) is fixed on the outer edge of the inner cylinder (3). The protruding ring (4) is embedded and fixed in the rubber body (1). A spring-loaded component (5) is embedded and fixed in the rubber body (1). The spring-loaded component (5) is made of elastic metal material. The spring-loaded component (5) includes an upper ring (501). A cone (502) is concentrically fixed at the lower end of the outer side of the upper ring (501). The diameter of the upper end of the cone (502) is larger than the diameter of the lower end. Multiple long grooves (6) are evenly distributed on the circumference of the cone (502).

2. The oil-resistant sea valve rubber sheet according to claim 1, characterized in that, The lower outer side of the rubber body (1) is machined with a conical surface (11).

3. The oil-resistant sea valve rubber sheet according to claim 1, characterized in that, The rubber body (1), ring plate (2), inner cylinder (3), convex ring (4) and spring-loaded component (5) are integrally vulcanized.

4. The oil-resistant sea valve rubber sheet according to claim 1, characterized in that, The rubber body (1) has a concentric annular groove (7) at its upper end.

5. The oil-resistant sea valve rubber sheet according to claim 4, characterized in that, It also includes a valve stem (8) that is connected to the rubber body (1), a pressure plate (9) is concentrically fixed and sealed on the valve stem (8), a limiting ring (10) that cooperates with the annular groove (7) is fixed at the lower end of the pressure plate (9), and a nut (12) is threadedly connected to the valve stem (8) below the pressure plate (9).

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