SF6 gas control valve

Abstract

The utility model discloses an SF6 gas control valve, which belongs to the technical field of valves, and comprises a valve body, a driving mechanism and a connecting assembly, the top of the valve body is fixedly connected with a mounting seat, the driving mechanism is fixedly mounted on the mounting seat, the top of the mounting seat is provided with an annular groove, the bottom of the driving mechanism is fixedly connected with a mounting ring, and the mounting ring is fixedly connected with the connecting assembly. Connecting grooves are formed in the periphery of the mounting ring, the connecting assembly comprises a spring, a connecting block, a traction column, a button, a traction rope and a rotating shaft, the spring is embedded in the inner wall of the annular groove, the connecting block abuts against one end of the spring, the traction column is fixedly connected to the end, close to the spring, of the connecting block, and one end of the traction column extends into the groove. The button is installed at an opening of the groove in a sliding mode, the traction rope is connected between the traction column and the button, and the traction rope is in lap joint with the rotating shaft; and by arranging an annular groove, a mounting ring, a connecting groove and a connecting assembly, maintenance of the driving mechanism is facilitated, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to an SF6 gas control valve. Background Art

[0002] Sulfur hexafluoride is an inorganic compound with the chemical formula SF6. It is a colorless, odorless, non-toxic and non-flammable stable gas under normal temperature and pressure. Its molecular weight is 146.055. At 20 °C and 0.1 MPa, its density is 6.0886 kg / m3, about 5 times that of air density. The molecular structure of sulfur hexafluoride is arranged in an octahedron, with a small bond distance and a high bond energy, so its stability is very high. When the temperature does not exceed 180 °C, its compatibility with electrical structure materials is similar to that of nitrogen.

[0003] The existing Chinese patent with the publication number CN212775833U discloses an SF6 integrated valve, which includes a shell. The shell is provided with a first groove, a second groove and a third groove. Electromagnetic coils are installed inside the first groove and the third groove respectively, and a check valve member is installed inside the second groove. The lower end of the shell is connected with a valve seat. Gas inlets and gas outlets are respectively arranged at both ends of the valve seat. Connection members are arranged at the positions of the gas inlets and the gas outlets, and the gas outlet is connected with a test connector through the connection member.

[0004] Regarding the above related technologies, the inventor found that there are at least the following problems in this technology: In the prior art, most of the driving mechanisms for controlling valves are of an integrated structure with the valve body or are fixed with a large number of bolts. When the driving mechanism needs to be overhauled, it is very troublesome and the operation difficulty is relatively high. Content of the Utility Model

[0005] The purpose of the utility model is to provide an SF6 gas control valve to solve the problems put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An SF6 gas control valve includes a valve body, a driving mechanism and a connection component. A mounting seat is fixedly connected to the top of the valve body. The driving mechanism is fixedly installed on the mounting seat. An annular groove is opened at the top of the mounting seat. An installation ring is fixedly connected to the bottom of the driving mechanism. The installation ring is inserted into the annular groove. Connection grooves are opened on the four sides of the installation ring. Grooves are opened on the four sides of the mounting seat where the annular groove is located. The connection component is arranged in the grooves.

[0007] The connecting component includes a spring, a connecting block, a traction column, a button, a traction rope and a rotating shaft. The spring is embedded in the inner wall of the annular groove. The connecting block abuts against one end of the spring. The traction column is fixedly connected to the end of the connecting block close to the spring. One end of the traction column extends into the groove. The button is slidably installed at the opening of the groove. The traction rope is connected between the traction column and the button. The rotating shaft is rotatably installed in the groove. The traction rope is lapped on the rotating shaft.

[0008] As a preferred embodiment, a valve stem extending into the mounting seat is provided at the top of the valve body. A driving rod is provided at the bottom of the driving mechanism. The driving rod is in clamping fit with the valve stem.

[0009] As a preferred embodiment, a sealing ring is provided on the inner bottom wall of the annular groove.

[0010] As a preferred embodiment, a guiding inclined surface is provided on the connecting block facing the opening of the annular groove.

[0011] As a preferred embodiment, a limiting groove is formed on the inner side wall of the groove. A limiting block is provided on the side wall of the button. The limiting block slides in the limiting groove.

[0012] As a preferred embodiment, flanges are provided at both ends of the valve body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For this SF6 gas control valve, by providing an annular groove, a mounting ring, a connecting groove and a connecting component, when installing the driving mechanism, only need to insert the mounting ring of the driving mechanism into the connecting groove of the mounting seat, make the driving rod and the valve stem in clamping fit, and then use the connecting component to connect with the connecting groove to complete the installation;

[0015] For this SF6 gas control valve, by providing a connecting component, when overhauling the driving mechanism, only need to press the button, use the button to drive the traction rope to move around the rotating shaft, make the traction rope traction the traction column, and make the traction column drive the connecting block to move out of the connecting groove, then the driving mechanism can be removed, which is convenient for overhauling the driving mechanism and reduces the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the sectional structural schematic diagram of the mounting seat of the present utility model;

[0018] Figure 3 is the enlarged view of the structure at A in the present utility model Figure 2 in.

[0019] In the figure: 1. Valve body; 11. Mounting seat; 12. Annular groove; 13. Valve stem; 14. Sealing ring; 15. Limiting groove; 16. Flange; 2. Driving mechanism; 21. Mounting ring; 22. Connecting groove; 23. Driving rod; 3. Connecting component; 31. Spring; 32. Connecting block; 33. Traction column; 34. Button; 35. Traction rope; 36. Rotating shaft; 37. Limiting block. Detailed implementation mode

[0020] The following further describes the present utility model in conjunction with embodiments.

[0021] The following embodiments are used to illustrate the present utility model, but cannot be used to limit the protection scope of the present utility model. The conditions in the embodiments can be further adjusted according to specific conditions. Any simple improvement of the method of the present utility model under the premise of the concept of the present utility model belongs to the protection scope required by the present utility model.

[0022] Please refer to Figures 1-3 , the present utility model provides an SF6 gas control valve, including a valve body 1, a driving mechanism 2 and a connecting component 3. Flanges 16 are provided at both ends of the valve body 1, and the valve body 1 can be installed through the flanges 16. A mounting seat 11 is fixedly connected to the top of the valve body 1, the driving mechanism 2 is fixedly installed on the mounting seat 11, a valve stem 13 extending into the mounting seat 11 is provided at the top of the valve body 1, a driving rod 23 is provided at the bottom of the driving mechanism 2, and the driving rod 23 is in clamping fit with the valve stem 13. By driving the driving rod 23 to work through the driving mechanism 2, the driving rod 23 drives the valve stem 13 to work, realizing the opening and closing adjustment of the control valve.

[0023] Referring to Figure 1 and Figure 2 , an annular groove 12 is opened at the top of the mounting seat 11, a mounting ring 21 is fixedly connected to the bottom of the driving mechanism 2, the mounting ring 21 is inserted into the annular groove 12, connecting grooves 22 are opened on the four sides of the mounting ring 21, grooves are opened on the four sides of the mounting seat 11 where the annular groove 12 is located, and the connecting component 3 is arranged in the grooves. By providing the annular groove 12, the mounting ring 21, the connecting grooves 22 and the connecting component 3, when installing the driving mechanism 2, only need to insert the mounting ring 21 of the driving mechanism 2 into the connecting groove 22 of the mounting seat 11, make the driving rod 23 in clamping fit with the valve stem 13, and then use the connecting component 3 to connect with the connecting groove 22 to complete the installation.

[0024] Specifically, referring to Figure 3, the connecting component 3 includes a spring 31, a connecting block 32, a traction column 33, a button 34, a traction rope 35 and a rotating shaft 36. The spring 31 is embedded in the inner wall of the annular groove 12. The connecting block 32 abuts against one end of the spring 31. The connecting block 32 is provided with a guiding inclined surface towards the opening direction of the annular groove 12. The traction column 33 is fixedly connected to one end of the connecting block 32 close to the spring 31. One end of the traction column 33 extends into the groove. The button 34 is slidably installed at the opening of the groove. The traction rope 35 is connected between the traction column 33 and the button 34. The rotating shaft 36 is rotatably installed in the groove. The traction rope 35 is lapped on the rotating shaft 36. By providing the connecting component 3, when overhauling the driving mechanism 2, only need to press the button 34, use the button 34 to drive the traction rope 35 to move around the rotating shaft 36, make the traction rope 35 traction the traction column 33, make the traction column 33 drive the connecting block 32 to move out of the connecting groove 22, then the driving mechanism 2 can be removed, which is convenient for overhauling the driving mechanism 2 and reduces the operation difficulty.

[0025] Furthermore, a sealing ring 14 is provided on the inner bottom wall of the annular groove 12. The mounting ring 21 abuts against the sealing ring 14. By providing the sealing ring 14, a sealing effect can be achieved.

[0026] Furthermore, a limiting groove 15 is provided on the inner side wall of the groove. A limiting block 37 is provided on the side wall of the button 34. The limiting block 37 slides in the limiting groove 15. Through the cooperation of the limiting groove 15 and the limiting block 37, a limiting effect can be achieved on the button 34.

[0027] The working principle and usage process of the present utility model: First, by providing the annular groove 12, the mounting ring 21, the connecting groove 22 and the connecting component 3, when installing the driving mechanism 2, only need to insert the mounting ring 21 of the driving mechanism 2 into the connecting groove 22 of the mounting seat 11, make the driving rod 23 and the valve rod 13 be clamped and matched, and then use the connecting component 3 to connect with the connecting groove 22, then the installation can be completed. When overhauling the driving mechanism 2, only need to press the button 34, use the button 34 to drive the traction rope 35 to move around the rotating shaft 36, make the traction rope 35 traction the traction column 33, make the traction column 33 drive the connecting block 32 to move out of the connecting groove 22, then the driving mechanism 2 can be removed, which is convenient for overhauling the driving mechanism 2 and reduces the operation difficulty.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An SF6 gas control valve, comprising a valve body (1), a drive mechanism (2) and a connection assembly (3), characterized in that: The top of the valve body (1) is fixedly connected to a mounting seat (11), the driving mechanism (2) is fixedly mounted on the mounting seat (11), the top of the mounting seat (11) is provided with an annular groove (12), the bottom of the driving mechanism (2) is fixedly connected to a mounting ring (21), the mounting ring (21) is inserted into the annular groove (12), the mounting ring (21) is provided with connecting grooves (22) on all sides, the mounting seat (11) is located in the annular groove (12) and is provided with grooves on all sides, and the connecting assembly (3) is arranged in the groove; The connecting assembly (3) comprises a spring (31), a connecting block (32), a traction column (33), a button (34), a traction rope (35) and a rotating shaft (36); the spring (31) is embedded in the inner wall of the annular groove (12); the connecting block (32) abuts against one end of the spring (31); the traction column (33) is fixedly connected to one end of the connecting block (32) close to the spring (31); one end of the traction column (33) extends into the groove; the button (34) is slidably installed at the opening of the groove; the traction rope (35) is connected between the traction column (33) and the button (34); the rotating shaft (36) is rotatably installed in the groove; and the traction rope (35) is overlapped on the rotating shaft (36).

2. The SF6 gas control valve according to claim 1, characterized in that: The top of the valve body (1) is provided with a valve stem (13) extending into the mounting seat (11), and the bottom of the driving mechanism (2) is provided with a driving rod (23), and the driving rod (23) is snap-fitted with the valve stem (13).

3. The SF6 gas control valve according to claim 1, characterized in that: The inner bottom wall of the annular groove (12) is provided with a sealing ring (14).

4. The SF6 gas control valve according to claim 1, characterized in that: The connection block (32) is provided with a guiding inclined surface in a direction toward the opening of the annular groove (12).

5. The SF6 gas control valve according to claim 1, characterized in that: A limiting groove (15) is provided on the inner side wall of the groove, and a limiting block (37) is provided on the side wall of the button (34), and the limiting block (37) slides in the limiting groove (15).

6. The SF6 gas control valve according to claim 1, characterized in that: Flanges (16) are provided at both ends of the valve body (1).

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