Medium-caliber ball receiving and sending valve

Abstract

The utility model discloses a medium-caliber ball receiving and sending valve, and belongs to the technical field of ball valves. The valve comprises a valve body, a gland flange and a top flange are arranged at the top of the valve body, valve decks are connected to the two sides of the valve body, valve seats are arranged in the valve decks, and cylindrical springs are arranged between the valve seats and the valve decks. The ball body is arranged between the valve body and the valve cover and is attached to the valve seat through a cylindrical spring; the valve rod penetrates through the gland flange and the top flange and is connected to the ball together with the valve body; the supporting plate is arranged between the valve cover and the end part of the ball body, and a shaft hole is matched with a ball shaft of the ball body; due to the design of the embedded valve seat of the spring set, the valve seat is prevented from plastic deformation in the axial direction of the valve body, and the valve seat can only perform elastic axial plastic deformation towards the ball body, so that the sealing effect is achieved, the sealing performance is better, and the service life of the valve is prolonged.

Description

Technical Field

[0001] This utility model relates to a medium-diameter ball valve for receiving and sending, belonging to the field of ball valve technology. Background Technology

[0002] Pipeline transportation offers advantages such as high efficiency, low cost, safety, reliability, and minimal environmental pollution. However, over time, dirt and deposits accumulate on the inner walls of pipeline ball valves. Once these deposits reach a certain level, they impede the flow of media. To ensure efficient and unobstructed pipeline transportation, cleaning balls (PIGs) must be used to regularly clean the pipeline. Main uses include: 1) Removing various residues from the pipeline before commissioning to ensure unobstructed flow. 2) Rust removal and anti-corrosion coating of new pipeline inner walls. 3) Regular wax scraping of oil pipes and dehydration of gas pipes in existing pipelines to maintain long-term effective transport capacity. 4) Isolation and replacement of different types of media transported within the same pipeline. However, traditionally designed ball valves cannot maintain a constant pressure on the ball to achieve a pre-tightened state, easily causing internal leakage and hindering pipeline cleaning operations. Furthermore, the threaded side caps for picking up and placing cleaning balls in traditional designs are bulky and cumbersome, requiring operator cooperation and increasing subsequent maintenance costs, thus greatly limiting their application. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a medium-diameter ball valve. The spring-embedded valve seat design prevents the valve seat from undergoing axial plastic deformation towards the valve body. The valve seat can only undergo elastic axial plastic deformation towards the ball, thereby achieving a sealing effect, resulting in better sealing performance and increased valve service life.

[0004] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:

[0005] A medium-diameter ball valve for launching and receiving, comprising:

[0006] The valve body has a pressure cover flange and a top flange on its top. Valve covers are connected to both sides of the valve body. A valve seat is provided inside the valve cover. A cylindrical spring is provided between the valve seat and the valve cover.

[0007] A sphere, which is located between the valve body and the valve cover, and is fitted to the valve seat by a cylindrical spring;

[0008] A valve stem, which passes through a gland flange and a top flange and connects to a ball on the valve body;

[0009] A support plate is provided between the valve cover and the end of the ball, and the shaft hole is engaged with the ball shaft.

[0010] Optionally, the top flange and the gland flange are triple-sealed by a sealing gasket.

[0011] Optionally, the valve body and valve cover are sealed by an O-ring and a gasket.

[0012] Optionally, the valve body and the valve cover are connected by studs and nuts.

[0013] Optionally, the connection between the valve seat and the valve cover is sealed by an O-ring.

[0014] Optionally, an O-ring and a gasket are provided between the valve stem and the gland flange for a triple seal.

[0015] Optionally, the valve body is provided with a threaded side cover, which is sealed to the valve body by O-ring four and O-ring five.

[0016] Optionally, the support plate and the valve cover are positioned by pin 2.

[0017] Optionally, the gland flange is connected to the valve body by screws and pins.

[0018] Optionally, the gland flange and the valve body are sealed by an O-ring and a gasket.

[0019] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0020] This invention features three main advantages: First, the spring-embedded valve seat design prevents axial plastic deformation of the valve seat towards the valve body, allowing only elastic axial plastic deformation of the valve seat towards the ball, thus achieving a sealing effect, improving sealing performance, and increasing valve lifespan. Second, the threaded side cover design incorporates an O-ring on the end face and a drain hole. If the user forgets to release pressure and opens the gland, the drain hole automatically releases pressure, enhancing safety during pipeline cleaning operations. Third, the valve top flange and valve body are fitted with a solid pin, improving valve reliability. When the valve malfunctions or becomes jammed, the external valve stem fails first, preventing blowout of the valve stem and failure of the gland flange, thus preventing media leakage. While intercepting the media in the pipeline, it also acts as a receptacle and recovery mechanism, making pipeline cleaning operations convenient, safe, and reliable. This significantly improves work efficiency, reduces valve maintenance costs, and enhances the company's market competitiveness. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the medium-diameter ball valve of this utility model;

[0022] Figure 2 This is a schematic diagram of another embodiment of the medium-diameter ball valve of this utility model;

[0023] Figure 3 This utility model Figure 1 Enlarged view of a portion of the diagram.

[0024] In the diagram: 1. Valve body; 2. Valve cover; 3. Ball; 4. Valve stem; 5. Valve seat; 6. Gland flange; 7. Top flange; 8. Support plate; 9. Threaded side cover; 10. Stud; 11. Nut; 12. O-ring one; 13. Sealing gasket one; 14. O-ring two; 15. O-ring four; 16. O-ring five; 17. O-ring six; 18. Sealing gasket four; 19. O-ring three; 20. Sealing gasket three; 21. Spring; 22. Pin two; 23. Screw; 24. Pin one. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] like Figure 1 As shown, a medium-bore ball valve for sending and receiving is disclosed, comprising:

[0028] The valve body 1 has valve covers 2 connected to both sides. The top of the valve body 1 is provided with a pressure cover flange 6 and a top flange 7. The side of the valve body 1 is provided with a threaded side cover 9. The valve cover 2 is provided with a valve seat 5. A cylindrical spring 21 is provided between the valve seat 5 and the valve cover 2.

[0029] The ball 3 is located between the valve body 1 and the valve cover 2, and is in contact with the valve seat 5 by a cylindrical spring 21;

[0030] Valve stem 4, which passes through gland flange 6 and connects to ball 3 via valve body 1;

[0031] The valve seat 5 adopts an embedded valve seat design and is assembled from a sealing ring and a retainer. The valve seat 5 is designed as an elastic structure, and a set of cylindrical springs 21 are arranged along the circumference of the valve channel cross section to keep the valve seat 5 pressing the ball 3 to achieve a pre-tightened state.

[0032] When the fluid pressure is very low, the valve seat 5 is sealed by the thrust of the spring 21; while when the fluid pressure is high, the imbalance of fluid pressure on the valve seat 5 ensures a seal.

[0033] In this embodiment, the threaded side cover 9 is sealed to the valve body 1 by O-ring 4 15 and O-ring 5 16. The threaded side cover 9 is designed with end face O-rings and a drain hole. When the user forgets to release pressure and opens the cover, the drain hole can automatically release pressure, which improves safety performance.

[0034] In this embodiment, the top flange 7 and the gland flange 6 are sealed by a sealing gasket 20. The gland flange 6 is connected to the valve body 1 by screws 23 and pins 24. The sealing gasket is a fireproof sealing gasket, which can ensure effective sealing in case of fire.

[0035] In this embodiment, the support plate 8 and the valve cover 2 are positioned by pin 22, and the gland flange 6 and the valve body 1 are sealed by O-ring 17 and sealing gasket 18.

[0036] In this embodiment, the sealing and assembly between the components are as follows:

[0037] The valve body 1 and valve cover 2 are sealed by O-ring 12 and sealing gasket 13. The valve body 1 and valve cover 2 are connected by stud 10 and nut 11. The valve seat 5 and valve cover 2 are sealed by O-ring 14. The valve stem 4 and gland flange 6 are sealed by O-ring 19 and sealing gasket 20. The threaded side cover 9 and valve body 1 are sealed by O-ring 15 and O-ring 16. The support plate 8 and valve cover 2 are positioned by pin 22. The gland flange 6 is connected to valve cover 2 by screw 11 and pin 12.

[0038] The specific usage is as follows: During installation, the valve seat adopts an elastic embedded valve seat design. A set of cylindrical springs is arranged along the circumference of the valve passage cross-section to keep the valve seat pressed against the ball to achieve a pre-tightened state. When the fluid pressure is very low, the valve seat is sealed by the spring thrust; when the fluid pressure is high, the imbalance generated by the fluid pressure on the valve seat ensures a seal. The spring-embedded valve seat design prevents the valve seat from undergoing axial plastic deformation towards the valve body. The valve seat can only undergo elastic axial plastic deformation towards the ball, thereby achieving a sealing effect. It has good double-sided sealing effect and strong elastic compensation capability. The top of the threaded side cover is designed with a relief valve and a small hole to release the internal pressure of the valve before opening the side cover. It also has an end face O-ring and a drain hole design. If the user forgets to release pressure and opens the cover, the drain hole can automatically release pressure.

[0039] During assembly, first install the O-ring on the valve seat, then install the springs into the valve cover, then install the two valve seats into the valve cover, and finally install the O-ring and gasket on the valve cover. Next, assemble the valve cover and valve body, slightly tightening the nuts. Then, place the ball into the valve body and valve cover assembly, and then place the valve stem into the ball connection. Next, install the gland flange with the O-ring and gasket installed between the valve stem and valve body, then place the gasket, install the top flange, and connect it with bolts. Then, connect the other valve cover to the valve body with bolts, install the O-ring on the threaded side cover, and then install the threaded side cover onto the valve body. Disassembly is performed in reverse order.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A medium-bore ball valve for launching and receiving, characterized in that it comprises: The valve body (1) has a pressure cover flange (6) and a top flange (7) on its top. The valve body (1) is connected to valve covers (2) on both sides. The valve cover (2) has a valve seat (5) inside it. A cylindrical spring (21) is provided between the valve seat (5) and the valve cover (2). The ball (3) is located between the valve body (1) and the valve cover (2), and is fitted to the valve seat (5) by means of a cylindrical spring (21); The valve stem (4) passes through the gland flange (6) and the top flange (7) and is connected to the ball (3) to the valve body (1); Support plate (8) is located between valve cover (2) and ball end, and the shaft hole is engaged with ball shaft of ball (3).

2. The medium-diameter ball valve according to claim 1, characterized in that, The top flange (7) and the gland flange (6) are sealed by a sealing gasket three (20).

3. The medium-diameter ball valve according to claim 1, characterized in that, The valve body (1) and the valve cover (2) are sealed by an O-ring (12) and a sealing gasket (13).

4. The medium-diameter ball valve according to claim 1, characterized in that, The valve body (1) and the valve cover (2) are connected by studs (10) and nuts (11).

5. The medium-diameter ball valve according to claim 1, characterized in that, The connection between the valve seat (5) and the valve cover (2) is sealed by an O-ring (14).

6. The medium-diameter ball valve according to claim 1, characterized in that, The valve stem (4) and the gland flange (6) are sealed with an O-ring (19) and a sealing gasket (20).

7. The medium-diameter ball valve according to claim 1, characterized in that, The valve body (1) is provided with a threaded side cover (9) on the side, and the threaded side cover (9) is sealed to the valve body (1) by O-ring four (15) and O-ring five (16).

8. The medium-diameter ball valve according to claim 1, characterized in that, The support plate (8) and the valve cover (2) are positioned by pin (22).

9. The medium-diameter ball valve according to claim 1, characterized in that, The gland flange (6) is connected to the valve body (1) by screws (23) and pins (24).

10. The medium-diameter ball valve according to claim 1, characterized in that, The gland flange (6) is sealed to the valve body (1) by O-ring six (17) and sealing gasket four (18).

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