Inner cone sleeve for environment-friendly cabinet

Abstract

The utility model relates to the technical field of environment-friendly cabinets, in particular to an inner cone sleeve for an environment-friendly cabinet, which comprises an insulator, a wavy umbrella skirt part is integrally injection-molded on the surface of the insulator, blind holes are arranged at the central parts of four parts of the insulator, and a connecting groove is arranged above the blind holes in the insulator. The connecting groove is communicated with the blind hole; a plurality of fastening assemblies are arranged on the inner wall of the connecting groove, a conducting rod is arranged in the center of the interior of the insulator, and the bottom end of the conducting rod extends into the blind hole. According to the utility model, the wavy umbrella skirt parts are arranged on the surface of the insulator, so that the safety of the product in the using process is improved; the plane where the top end of the conducting rod is located is higher than the plane where the top end of the insulator is located, so that surface air leakage is prevented; and by arranging the fastening assembly, the firmness degree during connection is increased, and the phenomenon that the inner cone sleeve falls off after being connected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection cabinets, and specifically relates to an inner cone bushing for an environmental protection cabinet. Background Art

[0002] With the global warming in recent years and the continuous emergence of extreme weather, we have realized the importance of environmental protection. To protect the environment, not only the carbon dioxide emissions should be reduced, but also the emissions of other harmful gases should be reduced, and SF6 is one of them. However, more than 60% of the power distribution equipment in the power distribution industry relies on SF6 gas insulation. Once the SF6 gas leaks, it will cause almost irreversible pollution to the surrounding environment. Therefore, the environmental protection cabinet came into being. However, an inner cone bushing is needed during the application of the environmental protection cabinet.

[0003] The existing inner cone bushing has poor safety during use and is prone to air leakage; and the existing inner cone bushing is not firmly connected during connection. Therefore, the inner cone bushing is prone to falling off after connection, which brings great trouble to people's use. Content of the Utility Model

[0004] The purpose of the utility model is to provide an inner cone bushing for an environmental protection cabinet to solve the problems of poor safety and insufficient firmness during connection of the existing inner cone bushing mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an inner cone bushing for an environmental protection cabinet, including an insulator. The surface of the insulator is integrally injection molded with a wave-shaped umbrella skirt part. A blind hole is opened at the central part of the four parts of the insulator, and a connection groove is arranged above the blind hole inside the insulator, and the connection groove communicates with the blind hole; a plurality of groups of fastening components are arranged on the inner wall of the connection groove, and the fastening components facilitate the firm connection of the inner cone bushing; a conductive rod is arranged at the central part inside the insulator, and the bottom end of the conductive rod extends into the blind hole.

[0006] Preferably, an arc part is integrally injection molded on one side of the top of the insulator, and the arc part is used for the insulation protection work when the inner cone bushing is in use.

[0007] Preferably, a sealing groove is opened at the edge position of the bottom of the insulator, and the sealing groove is used for the sealing work after the inner cone bushing is installed.

[0008] Preferably, a mounting nut is rotatably connected to the outer surface of the bottom of the insulator, and the mounting nut cooperates with a bolt for the installation and fixing work of the inner cone bushing.

[0009] Preferably, a circular connection head is arranged at one end of the conductive rod located inside the blind hole, and the plane where the top end of the conductive rod is located is higher than the plane where the top end of the insulator is located.

[0010] Preferably, a fixing screw groove is provided at the center position of the top of the conductive rod, and this fixing screw groove is used for the fixed connection work of the conductive rod.

[0011] Preferably, the fastening assembly includes a fastening groove, a fastening piece and a fastening spring. The fastening groove is opened on the inner wall of the connection groove, and a fastening piece is hinged inside the fastening groove. The surface of the fastening piece is fixedly connected with a fastening spring, and the other end of the fastening spring is fixedly connected with the surface of the connection groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The inner cone bushing for the environmental protection cabinet has a wavy umbrella skirt portion provided on the surface of the insulator. By using the umbrella skirt portion, the creepage linear distance of the product from the high-voltage end to the low-voltage end can be increased, ensuring that when the air pressure is insufficient or the gas insulation medium is replaced, the inner cone bushing can operate under the system's highest voltage, and the high-voltage end will not discharge and trip to the low-voltage end, thereby improving the safety during the use of the product; at the same time, since the plane where the top end of the conductive rod is located is higher than the plane where the top end of the insulator is located, this design can improve the firmness of the connection between the conductive rod and the insulator, prevent the conductive rod from falling off, and increase the contact structure and contact surface between the conductive rod and the epoxy, ensuring the adhesion between the conductive rod and the epoxy and preventing air leakage along the surface; by setting the fastening assembly, the firmness during connection is increased. When the fastening assembly is implemented, after being inserted into the connection groove, the elastic force of the fastening spring pushes the fastening piece to rotate, causing the fastening piece to push out of the inside of the fastening groove and form a squeezing force, thereby increasing the firmness during connection and avoiding the phenomenon of the inner cone bushing falling off after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional external structure schematic diagram of the present utility model;

[0014] Figure 2 is a cross-sectional structure schematic diagram of the present utility model;

[0015] Figure 3 is of the present utility model Figure 2 magnified structure schematic diagram at A in.

[0016] In the figure: 1, insulator; 11, umbrella skirt portion; 12, arc portion; 13, blind hole; 14, connection groove; 2, conductive rod; 21, fixing screw groove; 22, circular connection head; 3, fastening assembly; 31, fastening groove; 32, fastening piece; 33, fastening spring; 4, mounting nut; 5, sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0018] The structure of an inner conical sleeve for an environmental protection cabinet provided by the present invention is as Figure 1 and Figure 2 shown, including an insulator 1. The surface of the insulator 1 is integrally injection-molded with a wavy umbrella skirt portion 11. A blind hole 13 is opened at the central part of the four parts of the insulator 1. A connecting groove 14 is provided above the blind hole 13 inside the insulator 1, and the connecting groove 14 communicates with the blind hole 13. An arc portion 12 is integrally injection-molded on one side of the top end of the insulator 1. This arc portion 12 is used for the insulation protection work when the inner conical sleeve is in use.

[0019] During implementation, by setting a wavy umbrella skirt portion 11 on the surface of the insulator 1, the umbrella skirt portion 11 can increase the linear distance along the surface of the product from the high-voltage end to the low-voltage end, ensuring that when the air pressure is insufficient or the gas insulation medium is replaced, the inner conical sleeve operates under the highest voltage of the system, and the high-voltage end will not discharge and trip to the low-voltage end, thereby improving the safety during the use of the product.

[0020] Furthermore, as Figure 2 shown in the figure and the figure, several groups of fastening components 3 are provided on the inner wall of the connecting groove 14. These fastening components 3 facilitate the fastening connection of the inner conical sleeve. The fastening components 3 include a fastening groove 31, a fastening piece 32, and a fastening spring 33. The fastening groove 31 is opened on the inner wall of the connecting groove 14, and a fastening piece 32 is hinged inside the fastening groove 31. A fastening spring 33 is fixedly connected to the surface of the fastening piece 32, and the other end of the fastening spring 33 is fixedly connected to the surface of the connecting groove 14.

[0021] During implementation, after being inserted into the connecting groove 14, the elastic force of the fastening spring 33 is used to push the fastening piece 32 to rotate, so that the fastening piece 32 is pushed out of the inside of the fastening groove 31 and forms a squeezing force, thereby increasing the firmness during connection.

[0022] Furthermore, as Figure 2 shown in the figure and Figure 3As shown, a conductive rod 2 is provided at the central part inside the insulator 1, and the bottom end of the conductive rod 2 extends into the internal blind hole 13. A circular connector 22 is provided at one end of the conductive rod 2 located inside the blind hole 13. The plane where the top end of the conductive rod 2 is located is higher than the plane where the top end of the insulator 1 is located. A fixed screw groove 21 is provided at the center position of the top of the conductive rod 2, and this fixed screw groove 21 is used for the fixed connection work of the conductive rod 2; a sealing groove 5 is provided at the edge position of the bottom of the insulator 1, and this sealing groove 5 is used for the sealing work after the installation of the inner conical sleeve; the outer surface of the bottom of the insulator 1 is rotatably connected with a mounting nut 4, and this mounting nut 4 is used in cooperation with a bolt for the installation and fixation work of the inner conical sleeve.

[0023] During implementation, since the plane where the top end of the conductive rod 2 is located is higher than the plane where the top end of the insulator 1 is located, this design can improve the firmness of the connection between the conductive rod 2 and the insulator 1, prevent the conductive rod 2 from falling off, and increase the contact structure and contact surface between the conductive rod 2 and the epoxy, ensuring the adhesiveness between the conductive rod 2 and the epoxy and preventing air leakage along the surface.

[0024] Working principle: When in use, by setting a wavy umbrella skirt part 11 on the surface of the insulator 1, the umbrella skirt part 11 can be used to increase the linear distance along the surface of the product from the high-voltage end to the low-voltage end, ensuring that when the air pressure is insufficient or the gas insulation medium is replaced, the inner conical sleeve operates under the highest voltage of the system, and the high-voltage end will not discharge and trip to the low-voltage end, thereby improving the safety of the product during use; at the same time, since the plane where the top end of the conductive rod 2 is located is higher than the plane where the top end of the insulator 1 is located, this design can improve the firmness of the connection between the conductive rod 2 and the insulator 1, prevent the conductive rod 2 from falling off, and increase the contact structure and contact surface between the conductive rod 2 and the epoxy, ensuring the adhesiveness between the conductive rod 2 and the epoxy and preventing air leakage along the surface.

[0025] At the same time, during connection, by setting a fastening assembly 3, the firmness during connection is increased. When the fastening assembly 3 is implemented, after being inserted into the connection groove 14, the elastic force of the fastening spring 33 is used to push the fastening piece 32 to rotate, so that the fastening piece 32 is pushed out of the inside of the fastening groove 31 and forms a squeezing force, thereby increasing the firmness during connection and avoiding the falling-off phenomenon that occurs after the connection of the inner conical sleeve.

[0026] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms.

Claims

1. An inner conical sleeve for an environmental protection cabinet, comprising an insulator (1), characterized in that: The surface of the insulator (1) is integrally injection-molded with a wavy umbrella skirt portion (11). A blind hole (13) is provided at the central part of the four parts of the insulator (1), and a connecting groove (14) is arranged above the blind hole (13) inside the insulator (1), and the connecting groove (14) communicates with the blind hole (13); A number of groups of fastening components (3) are arranged on the inner wall of the connecting groove (14), and the fastening components (3) facilitate the fastening connection of the inner conical sleeve; A conducting rod (2) is arranged at the central part inside the insulator (1), and the bottom end of the conducting rod (2) extends into the blind hole (13).

2. The inner conical sleeve for an environmental protection cabinet according to claim 1, characterized in that: An arc-shaped portion (12) is integrally injection-molded on one side of the top of the insulator (1), and the arc-shaped portion (12) is used for the insulation protection work when the inner conical sleeve is in use.

3. An inner conical sleeve for an environmental protection cabinet according to claim 1, characterized in that: A sealing groove (5) is provided at the edge position of the bottom of the insulator (1), and the sealing groove (5) is used for the sealing work after the inner conical sleeve is installed.

4. The inner conical sleeve for an environmental protection cabinet according to claim 1, characterized in that: An installation nut (4) is rotatably connected to the outer surface of the bottom of the insulator (1), and the installation nut (4) cooperates with a bolt for the installation and fixation work of the inner conical sleeve.

5. The inner conical sleeve for an environmental protection cabinet according to claim 1, wherein: A circular connecting head (22) is arranged at one end of the conducting rod (2) inside the blind hole (13), and the plane where the top end of the conducting rod (2) is located is higher than the plane where the top end of the insulator (1) is located.

6. The inner conical sleeve for an environmental protection cabinet according to claim 1, wherein: A fixing screw groove (21) is provided at the central position of the top of the conducting rod (2), and the fixing screw groove (21) is used for the fixing connection work of the conducting rod (2).

7. An inner conical sleeve for an environmental protection cabinet according to claim 1, characterized in that: The fastening component (3) includes a fastening groove (31), a fastening piece (32) and a fastening spring (33). The fastening groove (31) is opened on the inner wall of the connecting groove (14), and a fastening piece (32) is hinged inside the fastening groove (31). A fastening spring (33) is fixedly connected to the surface of the fastening piece (32), and the other end of the fastening spring (33) is fixedly connected to the surface of the connecting groove (14).

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