Microswitch type SF6 density controller

Abstract

The utility model discloses a microswitch type SF6 density controller. The microswitch type SF6 density controller comprises an SF6 density controller body and a connecting piece used for being connected with an interface in the bottom of the SF6 density controller body. The connecting piece comprises a hollow external thread column, the top of the hollow external thread column is communicated with an installation groove body, a sealing step groove is formed in the bottom of the installation groove body, a second step groove is formed in the bottom of the connector, the second step groove is sleeved with a first sealing ring, and the lower end of the connector is inserted into the installation groove body. According to the SF6 density controller, the locking groove is matched with the locking assembly, the rapid dismounting and mounting function between the interface and the mounting groove body can be achieved, the SF6 density controller body can be rotated by a certain angle through the first arc-shaped guide groove, the clamping head can move upwards along the first arc-shaped guide groove, and the SF6 density controller body can be rapidly dismounted and mounted. And the lower end of the connector moves downwards, so that the first sealing ring is tightly pressed in the sealing step groove, and the sealing performance of the joint of the mounting groove body and the connector is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of SF6 electrical equipment, in particular to a micro switch type SF6 density controller. Background Art

[0002] A Chinese patent with announcement number CN205749189U discloses a bellows-type SF6 density controller with remote transmission signal, including a body and a body joint arranged on the outside of the body, the body joint is connected to the measuring gas chamber; the body is provided with a system spring tube, a standard spring tube, a dial, a pointer arranged in the dial, a movement connected to the pointer, a pull rod, a base, an upper fixed plate installed on the base, an upper bellows, a lower bellows, a movable plate, a micro switch, a circuit board, a terminal block, a remote transmission circuit board and a pressure sensor, the pressure sensor is connected to the body joint and is used to collect the SF6 gas pressure of the measuring gas chamber.

[0003] The above-mentioned SF6 density controller can accurately display the SF6 gas density value in the high-voltage switch chamber, which is convenient for on-site personnel to observe, and can also accurately and reliably transmit the relevant parameter signals of SF6 gas density to the control background.

[0004] However, during use, when the SF6 density controller is damaged and needs to be replaced, it is not convenient to quickly disassemble and assemble the SF6 density controller and the measuring gas chamber.

[0005] Therefore, a micro switch type SF6 density controller is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a micro switch type SF6 density controller, so as to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A micro switch type SF6 density controller, comprising an SF6 density controller body and a connector for connecting to an interface at the bottom of the SF6 density controller body;

[0009] The connecting piece includes a hollow externally threaded column, the top of the hollow externally threaded column is connected to a mounting groove body, a sealing step groove is provided at the bottom of the mounting groove body, a second step groove is provided at the bottom of the interface, a first sealing ring is sleeved on the second step groove, after the lower end of the interface is inserted into the mounting groove body, the bottom of the first sealing ring is pressed into the sealing step groove, and a locking assembly for fixing the lower end of the interface is provided on the mounting groove body.

[0010] The locking assembly includes a pull rod, a first step groove is provided at the lower end of the interface, a first arc-shaped guide groove is provided on the outer wall of the interface, the bottom of the first arc-shaped guide groove is connected with the top of the first step groove, a locking groove is provided at the lower end of the interface, and the locking groove is connected with the upper end of the first arc-shaped guide groove, an assembly groove is provided on the inner wall of the installation groove body, one end of the pull rod is slidably inserted into the assembly groove, and the other end of the pull rod is slid through the assembly groove and is arranged on the outside of the installation groove body, one end of the pull rod close to the assembly groove is fixedly connected with a clamp, and a spring is sleeved on the pull rod, one end of the spring abuts against one end of the assembly groove, and the other end of the spring abuts against one side of the clamp, and one end of the clamp can be clamped into the locking groove along the first arc-shaped guide groove.

[0011] In a micro switch type SF6 density controller according to the utility model, a second arc guide groove is opened at the lower end of the interface, the bottom of the second arc guide groove is connected to the top of the first step groove, and a limit block is fixedly connected to the inner wall of the mounting groove body, and the limit block can slide into the second arc guide groove from the bottom of the second arc guide groove.

[0012] In a micro switch type SF6 density controller according to the utility model, a handle is fixedly connected to one end of the pull rod away from the clamping head.

[0013] In a micro switch type SF6 density controller according to the utility model, a hexagonal screwing surface is provided on the outer wall of the lower end of the installation slot body.

[0014] In a micro switch type SF6 density controller according to the utility model, a second sealing ring is sleeved on the upper end of the outer wall of the hollow external threaded column.

[0015] In a micro switch type SF6 density controller according to the utility model, the outer wall of the spring is sprayed with an epoxy resin anti-oxidation coating.

[0016] The utility model has at least the following beneficial effects:

[0017] The utility model can realize the quick disassembly and assembly function between the interface and the installation slot body by setting the locking groove and the locking assembly. By setting the first arc guide groove, the SF6 density controller body can be rotated by a certain angle so that the clamping head can move upward along the first arc guide groove, and then the lower end of the interface can be moved downward, so that the first sealing ring is tightly pressed in the sealing step groove, thereby ensuring the sealing of the connection between the installation slot body and the interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a structural schematic diagram of a micro switch type SF6 density controller of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the interface of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting piece of the utility model;

[0022] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure when the interface of the utility model is connected with the connecting piece;

[0024] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part B in FIG.

[0025] Description of Figure Numbers:

[0026] 1. SF6 density controller body; 2. Interface; 201. First step groove; 2011. Arc guide groove; 2012. Locking groove; 202. Second step groove; 3. Connector; 301. Hollow external thread column; 302. Hexagonal tightening surface; 303. Installation groove body; 3031. Sealing step groove; 304. Limit block; 305. Locking assembly; 3051; Handle; 3052. Pull rod; 3053. Spring; 3054. Chuck. DETAILED DESCRIPTION

[0027] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0028] Please refer to Figures 1 to 6 As shown, an embodiment of the utility model provides a micro switch type SF6 density controller, including an SF6 density controller body 1 and a connector 3 for connecting to an interface 2 at the bottom of the SF6 density controller body 1.

[0029] Among them, the connecting part 3 includes a hollow external threaded column 301, the top of the hollow external threaded column 301 is connected to the installation groove body 303, the bottom of the installation groove body 303 is provided with a sealing step groove 3031, and the bottom of the interface 2 is provided with a second step groove 202. The second step groove 202 is sleeved with a first sealing ring 4. After the lower end of the interface 2 is inserted into the installation groove body 303, the bottom of the first sealing ring 4 is pressed into the sealing step groove 3031, and the installation groove body 303 is provided with a locking assembly 305 for fixing the lower end of the interface 2.

[0030] In this embodiment, the locking assembly 305 includes a pull rod 3052, a first step groove 201 is provided at the lower end of the interface 2, a first arc-shaped guide groove 2011 is provided on the outer wall of the interface 2, the bottom of the first arc-shaped guide groove 2011 is connected to the top of the first step groove 201, a locking groove 2012 is provided at the lower end of the interface 2, and the locking groove 2012 is connected to the upper end of the first arc-shaped guide groove 2011, and an assembly groove 3032 is provided on the inner wall of the installation groove body 303, one end of the pull rod 3052 is slidably inserted in the assembly groove 3032, and the pull rod 3052 The other end of the assembly slot 3032 slides through the assembly slot 3032 and is arranged on the outside of the installation slot body 303. The assembly slot 3032 is fixedly connected with a clamping head 3054 at one end close to the assembly slot 3032. A spring 3053 is sleeved on the pull rod 3052. One end of the spring 3053 abuts against one end of the assembly slot 3032, and the other end of the spring 3053 abuts against one side of the clamping head 3054. One end of the clamping head 3054 can be clamped into the locking slot 2012 along the first arc guide groove 2011. It should be noted that the clamping head 3054 cannot be fully retracted into the assembly slot 3032.

[0031] By adopting the above technical solution, during installation, the hollow external thread column 301 on the connecting piece 3 is fixed to the connecting port of the high-voltage switch air chamber, and then the pull rod 3052 is pulled away from the installation slot body 303, a part of the clamp head 3054 is retracted into the assembly slot 3032, and then the interface 2 at the lower end of the SF6 density controller body 1 is inserted into the installation slot body 303, so that the bottom of the first arc-shaped guide groove 2011 is aligned with the protruding part of the clamp head 3054. When the clamp head 3054 is inserted into the lower end of the first arc-shaped guide groove 2011, the clamp head 3054 is released. The pull rod 3052, and then the clamp head 3054 is pressed into the first arc guide groove 2011 under the elastic force of the spring 3053, and then the SF6 density controller body 1 is rotated at a certain angle, and the clamp head 3054 moves upward along the first arc guide groove 2011 and is clamped into the locking groove 2012. As the clamp head 3054 continues to move upward along the first arc guide groove 2011, the lower end of the interface 2 moves downward, so that the first sealing ring 4 is tightly pressed in the sealing step groove 3031, ensuring the sealing of the connection between the installation groove body 303 and the interface 2;

[0032] When the SF6 density controller body 1 needs to be disassembled, just pull the pull rod 3052 outward to remove the clamp 3054 from the locking groove 2012, and then rotate the SF6 density controller body 1 in the reverse direction to make the clamp 3054 slide out of the first arc-shaped guide groove 2011.

[0033] It should be further explained that the SF6 density controller body 1 in this embodiment adopts a bellows-type SF6 density controller with remote signal transmission disclosed in Chinese patent publication number CN205749189U.

[0034] Specifically, a second arc-shaped guide groove is opened at the lower end of the interface 2, the bottom of the second arc-shaped guide groove is connected to the top of the first step groove 201, and the inner wall of the mounting groove body 303 is fixedly connected to a limit block 304, and the limit block 304 can slide into the second arc-shaped guide groove from the bottom of the second arc-shaped guide groove. Through this arrangement, the longitudinal shear force on the clamping head 3054 can be effectively reduced when the SF6 density controller body 1 is rotated.

[0035] Specifically, in order to facilitate the installation of the hollow externally threaded column 301 on the connecting port of the high-voltage switch air chamber, a hexagonal tightening surface 302 is provided on the outer wall of the lower end of the installation groove body 303. In order to ensure the sealing of the connection between the hollow externally threaded column 301 and the connecting port of the high-voltage switch air chamber, a second sealing ring is provided on the upper end of the outer wall of the hollow externally threaded column 301.

[0036] Specifically, in order to increase the service life of the spring 3053, the outer wall of the spring 3053 is sprayed with an epoxy resin anti-oxidation coating.

[0037] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A micro switch type SF6 density controller, characterized in that: It comprises an SF6 density controller body (1) and a connector (3) for connecting to an interface (2) at the bottom of the SF6 density controller body (1); The connecting member (3) comprises a hollow external thread column (301), the top of the hollow external thread column (301) is connected to a mounting groove body (303), the bottom of the mounting groove body (303) is provided with a sealing step groove (3031), the bottom of the interface (2) is provided with a second step groove (202), the second step groove (202) is sleeved with a first sealing ring (4), after the lower end of the interface (2) is inserted into the mounting groove body (303), the bottom of the first sealing ring (4) is pressed into the sealing step groove (3031), and the mounting groove body (303) is provided with a locking component (305) for fixing the lower end of the interface (2); The locking assembly (305) comprises a pull rod (3052), a first step groove (201) is provided at the lower end of the interface (2), a first arc-shaped guide groove (2011) is provided on the outer wall of the interface (2), the bottom of the first arc-shaped guide groove (2011) is connected to the top of the first step groove (201), a locking groove (2012) is provided at the lower end of the interface (2), the locking groove (2012) is connected to the upper end of the first arc-shaped guide groove (2011), an assembly groove (3032) is provided on the inner wall of the installation groove body (303), and one end of the pull rod (3052) is slidably inserted into the assembly groove (303 2), the other end of the pull rod (3052) slides through the assembly groove (3032) and is then arranged outside the installation groove body (303), one end of the pull rod (3052) close to the assembly groove (3032) is fixedly connected with a clamp (3054), a spring (3053) is sleeved on the pull rod (3052), one end of the spring (3053) abuts against one end of the assembly groove (3032), and the other end of the spring (3053) abuts against one side of the clamp (3054), and one end of the clamp (3054) can be clamped into the locking groove (2012) along the first arc-shaped guide groove (2011).

2. A micro switch type SF6 density controller according to claim 1, characterized in that: A second arc-shaped guide groove is provided at the lower end of the interface (2), the bottom of the second arc-shaped guide groove is connected to the top of the first step groove (201), and a limit block (304) is fixedly connected to the inner wall of the installation groove body (303), and the limit block (304) can slide into the second arc-shaped guide groove from the bottom of the second arc-shaped guide groove.

3. A micro switch type SF6 density controller according to claim 2, characterized in that: One end of the pull rod (3052) away from the clamping head (3054) is fixedly connected to a handle (3051).

4. A micro switch type SF6 density controller according to claim 3, characterized in that: The outer wall of the lower end of the installation groove body (303) is provided with a hexagonal screw-on surface (302).

5. A micro switch type SF6 density controller according to claim 1, characterized in that: A second sealing ring is sleeved on the upper end of the outer wall of the hollow externally threaded column (301).

6. A micro switch type SF6 density controller according to any one of claims 1 to 5, characterized in that: The outer wall of the spring (3053) is sprayed with an epoxy resin anti-oxidation coating.

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