A protective valve seat for ultra-low temperature fixed ball valve
By designing a fixed ball valve protection seat with ceramic limit ring, sealing ring, spring and specific polymer ring under ultra-low temperature conditions, the problem of degradation of sealing performance due to brittleness of the material is solved, and high sealing and long life in ultra-low temperature environments are achieved.
Patent Information
- Application Number
- CN202421546635.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Under ultra-low temperature conditions, the material between the valve seat of the fixed ball valve and the valve ball may become brittle, resulting in a decrease in sealing performance and even leakage, destroying the valve seat and reducing service life.
An ultra-low temperature fixed ball valve protection seat is designed, using a combination structure of ceramic limit ring, sealing ring, spring, polytetrafluoroethylene ring and polymethyl methacrylate ring. The high hardness of the ceramic limit ring and the cold resistance of the polytetrafluoroethylene ring ensure sealing and durability.
It effectively improves the sealing of the ball valve, avoids leakage, extends service life, and maintains the stability of the material under ultra-low temperature conditions, avoiding damage caused by the material becoming brittle.
Smart Images
Figure CN222732171U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of ultra-low temperature fixed ball valve protection valve seat, in particular to an ultra-low temperature fixed ball valve protection valve seat. Background Art
[0002] The fixed ball valve protection seat is an important part of the ball valve. It is usually designed to protect the valve seat part of the ball valve to ensure the normal operation of the ball valve and extend its service life. Usually, the fixed ball valve protection seat is usually made of wear-resistant and corrosion-resistant materials. One of the design purposes of the fixed ball valve protection seat is to reduce the wear between the ball and the valve seat of the ball valve to extend the service life of the ball valve. The fixed ball valve protection seat plays an important role in the ball valve system.
[0003] In the specific use of fixed ball valves to protect valve seats, fixed ball valves may face some challenges under ultra-low temperature conditions. For example, the material connecting the valve seat and the valve ball may become brittle due to the low temperature, resulting in reduced sealing performance and even leakage, thereby damaging the valve seat, causing valve leakage, reducing service life, and making it inconvenient for operators to use. Utility Model Content
[0004] In order to make up for the above deficiencies, the utility model provides a protective valve seat for an ultra-low temperature fixed ball valve that overcomes the above technical problems or at least partially solves the above problems.
[0005] The utility model is achieved in this way:
[0006] The utility model provides a protective valve seat for an ultra-low temperature fixed ball valve, comprising a valve body and a mounting pipe, wherein the mounting pipe is fixed to the top of the valve body.
[0007] A protection mechanism, the protection mechanism comprising a valve stem, the valve stem is arranged inside the mounting tube, the bottom of the valve stem is threadedly connected with a ball valve body, a ceramic limit ring is arranged on the surface of the valve stem, a spring is arranged at the bottom of the ceramic limit ring, and a sealing ring is arranged at one end of the spring;
[0008] The polytetrafluoroethylene ring and the polymethyl methacrylate ring are both arranged on the surface of the valve stem.
[0009] In a preferred solution, a groove is formed on the top of the ball valve body, and one end of the valve stem is arranged inside the groove.
[0010] In a preferred solution, the ball valve body is arranged inside the valve body, and a turning handle is arranged on the top of the valve stem.
[0011] In a preferred solution, a limiting groove is provided inside the ceramic limiting ring, and the other end of the spring is arranged inside the limiting groove.
[0012] In a preferred solution, a semicircular groove is provided at the bottom of the sealing ring, and the sealing ring is adapted to fit the ball valve body.
[0013] In a preferred solution, an upper fixing ring and a lower fixing ring are provided on the surface of the mounting tube, and the upper fixing ring and the lower fixing ring are connected by bolts.
[0014] In a preferred solution, the polytetrafluoroethylene ring is arranged inside the upper fixing ring and the lower fixing ring, and a fixing plate is arranged on the top of the mounting tube.
[0015] In a preferred embodiment, the polymethyl methacrylate ring is arranged inside the fixed disk, and the polytetrafluoroethylene ring is arranged below the polymethyl methacrylate ring.
[0016] The utility model provides a protective valve seat for an ultra-low temperature fixed ball valve, and its beneficial effects include:
[0017] 1. Through the mutual cooperation of the valve stem, mounting tube, turning handle, ball valve body, ceramic limit ring, sealing ring and spring, first insert the valve stem into the interior of the mounting tube, and turn the turning handle to connect the valve stem with the ball valve body. When connected, the ceramic limit ring simultaneously enters the interior of the mounting tube. At this time, the sealing ring is tightly connected to the surface of the ball valve body through the extrusion of the spring, thereby improving the sealing and avoiding leakage. The ceramic limit ring has extremely high hardness and has good wear resistance, high hardness and other properties, which can protect the ball valve body well.
[0018] 2. By opening a semicircular groove at the bottom of the sealing ring, the sealing performance with the ball valve body can be improved. The sealing ring is matched with the ball valve body. By setting a polytetrafluoroethylene ring and a polymethyl methacrylate ring on the surface of the valve stem, it can be used under ultra-low temperature conditions without becoming brittle, causing damage, or causing leakage of the valve body, thereby improving the service life. The polytetrafluoroethylene ring itself has excellent heat resistance and cold resistance, and the polymethyl methacrylate ring itself has the effects of low price and high strength, which are convenient for operators to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 It is an overall stereogram provided by the embodiment of the utility model;
[0021] Figure 2 A schematic diagram of a cross-sectional structure of a valve body provided in an embodiment of the utility model;
[0022] Figure 3 The utility model embodiment provides Figure 2 The enlarged view of point A in the middle;
[0023] Figure 4 A schematic diagram of the internal structure of a valve body provided in an embodiment of the utility model;
[0024] Figure 5 The utility model embodiment provides Figure 4 The enlarged view of point B in the middle;
[0025] In the figure: 1. protection mechanism; 11. valve stem; 12. ceramic limit ring; 13. sealing ring; 14. spring; 15. ball valve body; 16. limit groove; 17. polytetrafluoroethylene ring; 18. polymethyl methacrylate ring; 19. mounting tube; 2. valve body; 21. turning handle; 22. fixing plate; 23. upper fixing ring; 24. lower fixing ring; 25. groove. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Reference Figure 1-Figure 5The utility model provides a technical solution: a super low temperature fixed ball valve protection seat, comprising a protection mechanism 1, a polytetrafluoroethylene ring 17, a polymethyl methacrylate ring 18, a valve body 2 and a mounting tube 19, the mounting tube 19 is fixed to the top of the valve body 2, the protection mechanism 1 is a mechanism that can protect the ball valve body 15 and improve the sealing performance, the protection mechanism 1 comprises a valve stem 11, the valve stem 11 is arranged inside the mounting tube 19, the bottom of the valve stem 11 is threadedly connected with the ball valve body 15, the surface of the valve stem 11 is provided with a ceramic limit ring 12, the bottom of the ceramic limit ring 12 is provided with a spring 14, one end of the spring 14 is provided with a sealing ring 13, through the valve stem 11, the mounting tube 19, the turning handle 21, the ball valve body 15, ... The valve body 15, the ceramic limit ring 12, the sealing ring 13 and the spring 14 cooperate with each other, so that when the operator needs to use it, the operator can first insert the valve stem 11 into the interior of the mounting tube 19, and turn the handle 21 to connect the valve stem 11 with the ball valve body 15. When connected, the ceramic limit ring 12 simultaneously enters the interior of the mounting tube 19. At this time, the sealing ring 13 is tightly connected to the surface of the ball valve body 15 through the extrusion of the spring 14, thereby improving the sealing performance and avoiding leakage. The ceramic limit ring 12 has extremely high hardness and has good resistance to wear, corrosion, high temperature, oxidation, high hardness and never rust, etc., which can protect the ball valve body 15 very well.
[0028] Reference Figure 1-Figure 5 In a preferred embodiment, the polytetrafluoroethylene ring 17 and the polymethyl methacrylate ring 18 are both arranged on the surface of the valve stem 11, the top of the ball valve body 15 is provided with a groove 25, one end of the valve stem 11 is arranged inside the groove 25, the ball valve body 15 is arranged inside the valve body 2, and the top of the valve stem 11 is provided with a turning handle 21. By providing the turning handle 21, it is convenient for the operator to rotate the valve stem 11, the ceramic limiting ring 12 is provided with a limiting groove 16, the other end of the spring 14 is arranged inside the limiting groove 16, and the bottom of the sealing ring 13 is provided with a semicircular groove. By A semicircular groove is provided at the bottom of the sealing ring 13, so as to improve the sealing performance with the ball valve body 15. The sealing ring 13 is matched with the ball valve body 15. By arranging a polytetrafluoroethylene ring 17 and a polymethyl methacrylate ring 18 on the surface of the valve stem 11, it can be used under ultra-low temperature conditions without becoming brittle or being damaged, and without causing leakage of the valve body 2, thereby improving the service life. The polytetrafluoroethylene ring 17 itself has excellent heat resistance and cold resistance, and the polymethyl methacrylate ring 18 itself has the effects of low price and high strength, so it is convenient for the operator to use.
[0029] Reference Figure 1-Figure 5In a preferred embodiment, an upper fixing ring 23 and a lower fixing ring 24 are provided on the surface of the mounting tube 19, and the upper fixing ring 23 and the lower fixing ring 24 are connected by bolts. A polytetrafluoroethylene ring 17 is provided inside the upper fixing ring 23 and the lower fixing ring 24. By providing the polytetrafluoroethylene ring 17 inside the upper fixing ring 23 and the lower fixing ring 24, when the operator completes the rotation of the valve stem 11, the polytetrafluoroethylene ring 17 can seal the upper fixing ring 23 and the lower fixing ring 24. A fixing disk 22 is provided on the top of the mounting tube 19, and a polymethyl methacrylate ring 18 is provided inside the fixing disk 22. By providing the polymethyl methacrylate ring 18 inside the fixing disk 22, when the operator completes the rotation of the valve stem 11, the polymethyl methacrylate ring 18 can seal the fixing disk 22. The polytetrafluoroethylene ring 17 is provided below the polymethyl methacrylate ring 18.
[0030] Specifically, the working process or working principle of the ultra-low temperature fixed ball valve protecting the valve seat is as follows: in the specific use of the fixed ball valve protecting the valve seat, under ultra-low temperature conditions, the fixed ball valve may face some challenges. For example, the material connecting the valve seat and the valve ball may become brittle due to the low temperature, resulting in a decrease in the sealing performance or even leakage, thereby damaging the valve seat, causing the valve to leak, shortening the service life, and being inconvenient for the operator to use. Therefore, the technical solution can solve the above problems. When the operator needs to use it, the operator can first insert the valve stem 11 into the interior of the mounting tube 19, and turn the handle 21 to connect the valve stem 11 with the ball valve body 15. When connected, the ceramic limit ring 12 synchronously enters the interior of the mounting tube 19. At this time, the sealing ring 13 is squeezed by the spring 14 and connected to the ball valve. The surface of the main body 15 is tightly connected, which can improve the sealing and avoid leakage. The ceramic limit ring 12 has extremely high hardness and has good resistance to wear, corrosion, high temperature, oxidation, high hardness and never rust. It can protect the ball valve body 15 very well. When the operator needs to prevent damage to the valve seat, the operator arranges a polytetrafluoroethylene ring 17 and a polymethyl methacrylate ring 18 on the surface of the valve stem 11, so that it can be used under ultra-low temperature conditions without becoming brittle or causing damage. It will not cause leakage of the valve body 2, thereby improving the service life. The polytetrafluoroethylene ring 17 itself has excellent heat resistance and cold resistance, and the polymethyl methacrylate ring 18 itself has the effects of low price and high strength, which is convenient for the operator to use. At this point, all processes are completed.
Claims
1. A protective valve seat for a cryogenic fixed ball valve, comprising a valve body (2) and a mounting tube (19), wherein the mounting tube (19) is fixed to the top of the valve body (2), characterized in that: A protection mechanism (1), the protection mechanism (1) comprising a valve stem (11), the valve stem (11) being arranged inside a mounting tube (19), the bottom of the valve stem (11) being threadedly connected to a ball valve body (15), a ceramic stop ring (12) being arranged on the surface of the valve stem (11), a spring (14) being arranged at the bottom of the ceramic stop ring (12), and a sealing ring (13) being arranged at one end of the spring (14); A polytetrafluoroethylene ring (17) and a polymethyl methacrylate ring (18), wherein the polytetrafluoroethylene ring (17) and the polymethyl methacrylate ring (18) are both arranged on the surface of the valve stem (11).
2. The ultra-low temperature fixed ball valve protection valve seat according to claim 1, characterized in that: A groove (25) is provided on the top of the ball valve body (15), and one end of the valve stem (11) is arranged inside the groove (25).
3. The ultra-low temperature fixed ball valve protection valve seat according to claim 2, characterized in that: The ball valve body (15) is arranged inside the valve body (2), and a turning handle (21) is arranged on the top of the valve stem (11).
4. The ultra-low temperature fixed ball valve protection valve seat according to claim 1, characterized in that: A limiting groove (16) is provided inside the ceramic limiting ring (12), and the other end of the spring (14) is arranged inside the limiting groove (16).
5. The ultra-low temperature fixed ball valve protection valve seat according to claim 3, characterized in that: A semicircular groove is provided at the bottom of the sealing ring (13), and the sealing ring (13) is matched with the ball valve body (15).
6. The ultra-low temperature fixed ball valve protection seat according to claim 4, characterized in that: An upper fixing ring (23) and a lower fixing ring (24) are provided on the surface of the mounting tube (19), and the upper fixing ring (23) and the lower fixing ring (24) are connected by bolts.
7. The ultra-low temperature fixed ball valve protection valve seat according to claim 6, characterized in that: The polytetrafluoroethylene ring (17) is arranged inside the upper fixing ring (23) and the lower fixing ring (24), and a fixing plate (22) is arranged on the top of the mounting tube (19).
8. The ultra-low temperature fixed ball valve protection seat according to claim 7, characterized in that: The polymethyl methacrylate ring (18) is arranged inside the fixed disk (22), and the polytetrafluoroethylene ring (17) is arranged below the polymethyl methacrylate ring (18).