A mounting structure for an ultra-low temperature valve seat

Abstract

The utility model relates to the field of valve technology, and discloses a mounting structure of an ultra-low temperature valve seat, comprising a swivel, a swivel rod is fixedly connected to the lower surface of the swivel, the outer wall of the swivel rod is rotatably connected to a connecting shell, the outer wall of the swivel rod is fixedly connected to a first bevel gear, the outer wall of the first bevel gear is meshingly connected to a second bevel gear, the inner wall of the second bevel gear is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is rotatably connected to the inner wall of the connecting shell, the outer wall of the threaded rod is threadedly connected to a second fixed shell, and the inner wall of the second fixed shell is provided with a connecting assembly. In the utility model, the swivel is driven by the swivel to grip the inner wall of the connecting shell, the swivel rod drives the first bevel gear to drive the second bevel gear to drive the rotating shaft and the first gear to rotate when in use, the first gear drives the second gear to rotate and drive the threaded rod on the inner wall of the sleeve, so as to achieve the effect of quickly moving the first fixed shell and the second fixed shell to the middle for installation.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an installation structure of an ultra-low temperature valve seat. Background Art

[0002] Ultra-low temperature valve seat is a valve component used in extremely low temperature environment (usually refers to the temperature below zero degrees Celsius). It has special materials and design to ensure reliable operation under extreme low temperature conditions. The valve seat is usually used in the transportation and storage system of cryogenic liquids such as liquid nitrogen, liquid argon, and liquid hydrogen.

[0003] In ultra-low temperature environments, materials tend to become fragile, especially metal materials. Therefore, the use of mounting structures can ensure that the sealing performance between the valve seat and the valve body is guaranteed to the greatest extent, including ensuring close contact between the valve seat and the valve body, and maintaining reliable sealing performance at low temperatures to prevent leakage of cryogenic liquids. The use of appropriate mounting structures is crucial to the performance, safety and reliability of ultra-low temperature valve seats. It not only ensures the sealing performance between the valve seat and the valve body, but also improves the durability, safety and convenience of the valve.

[0004] However, most of the installation structures of ultra-low temperature valve seats do not have the effect of secondary fixing during use. During use, there may be no fixing structure on the outside of the pipeline, which may cause deformation of the outer connection when maintenance is required during long-term use, resulting in the problem of being unable to be disassembled. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides an installation structure for an ultra-low temperature valve seat, which aims to improve the problem that the outer connection may be deformed and cannot be disassembled when maintenance is required during long-term use due to the lack of a fixed structure on the outside of the pipeline.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The outer wall of the second gear is fixedly connected to the first gear, and the outer wall of the second gear is rotatably connected to the second gear of the gear.

[0008] Preferably, the connecting assembly comprises a valve body, an outer wall of the valve body is slidably connected to the inner wall of the second fixed shell, and a sealing sleeve is slidably connected to the outer wall of the valve body.

[0009] Preferably, the outer wall of the sealing sleeve is slidably connected with a pipeline, and the inner wall of the sealing sleeve is provided with a sliding groove.

[0010] Preferably, the inner wall of the sealing sleeve is slidably connected to a push rod, and the outer wall of the push rod is fixedly connected to a spring.

[0011] Preferably, a U-shaped piece is fixedly connected to the bottom end of the spring, and a clamping ring is fixedly connected to the outer wall of the U-shaped piece.

[0012] Preferably, the outer wall of the clamping ring is slidably connected to the inner wall of the sealing sleeve, and the outer wall of the clamping ring is fixedly connected to a sliding plug.

[0013] Preferably, the outer wall of the clamping ring is slidably connected to an inner tube, and the inner wall of the inner tube is provided with a clamping groove.

[0014] Preferably, the outer wall of the sliding plug is slidably connected to the inner wall of the slot, and the inner wall of the sealing sleeve is slidably connected to the outer wall of the inner tube.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the rotating ring drives the rotating rod to catch the inner wall of the connecting shell, and the rotating rod drives the first bevel gear to drive the second bevel gear. When in use, the second bevel gear drives the rotating shaft and the first gear to rotate, and the first gear drives the second gear to rotate on the inner wall of the sleeve to drive the threaded rod, so as to achieve the effect of quickly moving the first fixed shell and the second fixed shell to the middle for installation.

[0017] 2. In the utility model, after the clamping ring and the U-shaped piece slide into the inner wall of the sealing sleeve, the sealing sleeve slides on the outer wall of the inner tube and is clamped into the inner wall of the slot through the sliding plug, which can achieve the effect of rapid fixing and further sealing during use. The U-shaped piece is pressed down by the sliding spring on the inner wall of the slide groove, and the clamping ring is driven to extend and move to both sides through the U-shaped piece, thereby sliding the sliding plug out from the inner wall of the slot, which achieves the effect of rapid disassembly during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of an installation structure of a cryogenic valve seat proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of a first fixed shell of a mounting structure of a cryogenic valve seat proposed by the utility model;

[0020] Figure 3 A schematic diagram of a pipeline for an installation structure of a cryogenic valve seat proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of an inner tube of a mounting structure of an ultra-low temperature valve seat proposed by the utility model.

[0022] Legend:

[0023] 1. swivel; 2. swivel rod; 3. first bevel gear; 4. second bevel gear; 5. connecting shell; 6. first fixed shell; 7. rotating shaft; 8. first gear; 9. second gear; 10. sleeve; 11. threaded rod; 12. limit groove; 13. second fixed shell; 14. valve body; 15. pipeline; 16. sealing sleeve; 17. slide groove; 18. push rod; 19. spring; 20. U-shaped piece; 21. retaining ring; 22. sliding plug; 23. inner tube; 24. retaining groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1-Figure 3The utility model provides an embodiment: a mounting structure of a cryogenic valve seat, comprising a swivel 1, a swivel rod 2 is fixedly connected to the lower surface of the swivel 1, an outer wall of the swivel rod 2 is rotatably connected to a connecting shell 5, an outer wall of the swivel rod 2 is fixedly connected to a first bevel gear 3, an outer wall of the first bevel gear 3 is meshingly connected to a second bevel gear 4, an inner wall of the second bevel gear 4 is fixedly connected to a rotating shaft 7, an outer wall of the rotating shaft 7 is rotatably connected to the inner wall of the connecting shell 5, an outer wall of the connecting shell 5 is fixedly connected to a first fixed shell 6, an outer wall of the rotating shaft 7 is fixedly connected to a first gear 8, and an outer wall of the first gear 8 is meshingly connected to a second gear 9 The outer wall of the second gear 9 is rotatably connected with a sleeve 10, the lower surface of the sleeve 10 is fixedly connected to the upper surface of the first fixed shell 6, the inner wall of the sleeve 10 is rotatably connected with a threaded rod 11, the inner wall of the second gear 9 is fixedly connected to the outer wall of the threaded rod 11, the outer wall of the threaded rod 11 is rotatably connected to the inner wall of the limiting groove 12, the outer wall of the threaded rod 11 is threadedly connected with a second fixed shell 13, and the inner wall of the second fixed shell 13 is provided with a connecting assembly; the connecting assembly includes a valve body 14, the outer wall of the valve body 14 is slidably connected to the inner wall of the second fixed shell 13, and the outer wall of the valve body 14 is slidably connected with a sealing sleeve 16;

[0026] Specifically, the rotating rod 2 drives the first bevel gear 3 and the second bevel gear 4 to drive the rotating shaft 7 to rotate on the inner wall of the connecting shell 5. The rotating shaft 7 drives the first gear 8, which can drive the second gear 9 to rotate on the inner wall of the sleeve 10. The second gear 9 drives the threaded rod 11 to drive the second fixed shell 13 to move upward, so that the valve seat can be quickly fixed.

[0027] Reference Figure 3-Figure 4 The outer wall of the sealing sleeve 16 is slidably connected to the pipe 15, and the inner wall of the sealing sleeve 16 is provided with a slide groove 17; the inner wall of the sealing sleeve 16 is slidably connected to the push rod 18, and the outer wall of the push rod 18 is fixedly connected to the spring 19; the bottom end of the spring 19 is fixedly connected to the U-shaped piece 20, and the outer wall of the U-shaped piece 20 is fixedly connected to the clamping ring 21;

[0028] Specifically, the sealing sleeve 16 and the U-shaped piece 20 can quickly fix the sealing sleeve 16 through the slot 24 during use, and the push rod 18 and the spring 19 can quickly slide the sliding plug 22 out of the inner wall of the slot 24 for disassembly during use.

[0029] Reference Figure 4 The outer wall of the clamp ring 21 is slidably connected to the inner wall of the sealing sleeve 16, and the outer wall of the clamp ring 21 is fixedly connected to the sliding plug 22; the outer wall of the clamp ring 21 is slidably connected to the inner tube 23, and the inner wall of the inner tube 23 is provided with a groove 24; the outer wall of the sliding plug 22 is slidably connected to the inner wall of the groove 24, and the inner wall of the sealing sleeve 16 is slidably connected to the outer wall of the inner tube 23;

[0030] Specifically, the clamping groove 24 can quickly fix the sliding plug 22 during use, the inner tube 23 can further seal the connection during use, and the sealing sleeve 16 can play a second fixing effect during use.

[0031] Working principle: when the valve seat needs to be used, the inner tube 23 slides into the inner wall of the pipeline 15, and the valve body 14 slides into the inner wall of the sealing sleeve 16. When the sealing sleeve 16 drives the clamping ring 21 and the sliding plug 22 to be stuck on the inner wall of the groove 24, the inner tube 23 plays a first sealing and fixing effect. During use, the pressing rod 18 slides on the inner wall of the slide groove 17 to exert a pressure effect on the spring 19, driving the U-shaped piece 20 to squeeze downward. During use, the U-shaped piece 20 is pressed down on the outer wall of the inner tube 23 and deformed to expand on both sides, and the sliding plug 2 is driven by the clamping ring 21 to slide out from the inner wall of the groove 24. During use, the sealing sleeve 16 is quickly installed and disassembled. During use, the first fixed shell 6 and the second fixed shell 13 are clamped to the connection or the place that needs to be fixed, and the rotating ring 1 drives the rotating rod 2 to rotate. During use, the rotating rod 2 drives the first bevel gear 3 and the second bevel gear 4 to drive The rotating shaft 7 rotates on the inner wall of the connecting shell 5. During use, the rotating shaft 7 drives the first gear 8 to drive the second gear 9 to rotate on the inner wall of the sleeve 10. During use, the second gear 9 drives the threaded rod 11 to drive the second fixed shell 13 to move upward, so that the valve seat can be quickly fixed during use. During use, the valve seat not only achieves the effect of driving the rotating shaft 7 and the first gear 8 to rotate through the second bevel gear 4, but also drives the second gear 9 to rotate on the inner wall of the sleeve 10 through the first gear 8 to drive the threaded rod 11, so as to achieve the effect of quickly moving the first fixed shell 6 and the second fixed shell 13 to the middle for installation, but also has the effect of pressing the U-shaped piece 20 through the pressing rod 18 on the inner wall sliding spring 19 of the slide groove 17, and driving the retaining ring 21 to extend and move to both sides through the U-shaped piece 20, so as to slide the sliding plug 22 out from the inner wall of the retaining groove 24, so as to achieve the effect of quick disassembly during use.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mounting structure for a cryogenic valve seat, comprising a swivel (1), characterized in that: The lower surface of the rotating ring (1) is fixedly connected to a rotating rod (2), the outer wall of the rotating rod (2) is rotatably connected to a connecting shell (5), the outer wall of the rotating rod (2) is fixedly connected to a first bevel gear (3), the outer wall of the first bevel gear (3) is meshingly connected to a second bevel gear (4), the inner wall of the second bevel gear (4) is fixedly connected to a rotating shaft (7), the outer wall of the rotating shaft (7) is rotatably connected to the inner wall of the connecting shell (5), the outer wall of the connecting shell (5) is fixedly connected to a first fixed shell (6), the outer wall of the rotating shaft (7) is fixedly connected to a first gear (8), and the first gear (8) is fixedly connected to the outer wall of the rotating shaft (7). ) is meshedly connected with a second gear (9), the outer wall of the second gear (9) is rotatably connected with a sleeve (10), the lower surface of the sleeve (10) is fixedly connected to the upper surface of the first fixed shell (6), the inner wall of the sleeve (10) is rotatably connected with a threaded rod (11), the inner wall of the second gear (9) is fixedly connected to the outer wall of the threaded rod (11), the outer wall of the threaded rod (11) is rotatably connected to the inner wall of the limiting groove (12), the outer wall of the threaded rod (11) is threadedly connected with a second fixed shell (13), and the inner wall of the second fixed shell (13) is provided with a connecting component.

2. The installation structure of a cryogenic valve seat according to claim 1, characterized in that: The connection assembly comprises a valve body (14), the outer wall of the valve body (14) is slidably connected to the inner wall of the second fixed shell (13), and the outer wall of the valve body (14) is slidably connected to a sealing sleeve (16).

3. The installation structure of a cryogenic valve seat according to claim 2, characterized in that: The outer wall of the sealing sleeve (16) is slidably connected to a pipeline (15), and the inner wall of the sealing sleeve (16) is provided with a sliding groove (17).

4. The installation structure of a cryogenic valve seat according to claim 3, characterized in that: The inner wall of the sealing sleeve (16) is slidably connected to a push rod (18), and the outer wall of the push rod (18) is fixedly connected to a spring (19).

5. The installation structure of a cryogenic valve seat according to claim 4, characterized in that: The bottom end of the spring (19) is fixedly connected to a U-shaped piece (20), and the outer wall of the U-shaped piece (20) is fixedly connected to a clamping ring (21).

6. The installation structure of a cryogenic valve seat according to claim 5, characterized in that: The outer wall of the clamping ring (21) is slidably connected to the inner wall of the sealing sleeve (16), and the outer wall of the clamping ring (21) is fixedly connected to a sliding plug (22).

7. The installation structure of a cryogenic valve seat according to claim 6, characterized in that: The outer wall of the clamping ring (21) is slidably connected to an inner tube (23), and the inner wall of the inner tube (23) is provided with a clamping groove (24).

8. The installation structure of a cryogenic valve seat according to claim 7, characterized in that: The outer wall of the sliding plug (22) is slidably connected to the inner wall of the clamping groove (24), and the inner wall of the sealing sleeve (16) is slidably connected to the outer wall of the inner tube (23).

Images