CN211208120U

CN211208120U - High-voltage insulation composite bushing

Info

Publication number: CN211208120U
Application number: CN201922296014.3U
Authority: CN
Inventors: 马然; 李艳辉; 尹蕾
Original assignee: Shenzhen Wal Electric Power Technology Co ltd; Shenzhen Woer Heat Shrinkable Material Co Ltd
Current assignee: Shenzhen Wal Electric Power Technology Co ltd; Shenzhen Woer Heat Shrinkable Material Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-08-07
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a high-voltage insulating composite bushing, which comprises a bushing body and an isolating component coated outside the bushing body; the sleeve body comprises an insulator and an electrode embedded in the insulator, and a connecting hole is formed in the electrode; the isolation assembly comprises a gasket and an isolation layer, the isolation layer comprises a base body layer and a covering layer formed by extending the insulator from the periphery of the base body layer, the base body layer is abutted against one end of the insulator, the gasket is embedded in the base body layer and fixed at one end of the electrode, and a through hole communicated with the connecting hole is formed in the gasket. The utility model discloses a set up the isolation components in sleeve pipe body outside, when taking place electrical breakdown or creepage, only form the galvanic corrosion vestige on the isolation components, and simple structure, convenient the change is favorable to guaranteeing high-voltage insulation composite bushing's electrical performance integrality, improves its life.

Description

High-voltage insulation composite bushing

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electric power tech field especially relates to a high-voltage insulation composite bushing.

[ background of the invention ]

At present, a high-voltage insulating sleeve is mainly used at the connection part of an incoming line and an outgoing line of electrical equipment and a cable. In the prior art, a high-voltage insulating bushing adopts a mode that electrodes are embedded into a solid insulating medium to obtain expected voltage distribution, the solid insulating medium is directly matched and connected with other electrical elements, a matching interface of the solid insulating medium is usually a weak point in an electrical connection process, and when electrical breakdown or creepage occurs, an electrical corrosion trace is easily formed, so that the electrical performance of the high-voltage insulating bushing is reduced, and even the performance fails. In order to ensure the normal operation of the electrical system, the high-voltage insulating bushing is required to be replaced, which is time-consuming and labor-consuming.

In view of the above, it is desirable to provide a high voltage insulating composite bushing to overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims at providing a high-voltage insulation composite bushing improves the influence that easily became invalid in the use, guarantees sheathed tube electric property.

In order to achieve the above object, the present invention provides a high voltage insulation composite bushing, which comprises a bushing body and an isolation assembly coated outside the bushing body; the sleeve body comprises an insulator and an electrode embedded in the insulator, and a connecting hole is formed in the electrode; the isolation assembly comprises a gasket and an isolation layer, the isolation layer comprises a base body layer and a covering layer formed by extending the insulator from the periphery of the base body layer, the base body layer is abutted against one end of the insulator, the gasket is embedded in the base body layer and fixed at one end of the electrode, and a through hole communicated with the connecting hole is formed in the gasket.

In a preferred embodiment, the isolation layer forms an interference fit with the insulator to secure the connection.

In a preferred embodiment, the isolation layer is integrally formed, the outer circumferential surface of the insulator is a conical surface, and the cover layer is in a conical cylinder shape.

In a preferred embodiment, the thickness of the cover layer is 0.5mm to 2.5 mm.

In a preferred embodiment, the gasket is a silver-plated copper sheet, and the isolation layer is a silica gel layer.

In a preferred embodiment, the spacer is attached to the electrode by a screw.

The beneficial effects of the utility model reside in that: through set up the isolation component in the sleeve pipe body outside, when taking place electrical breakdown or creepage, only form the galvanic corrosion trace on the isolation component, and simple structure, convenient the change is favorable to guaranteeing high-voltage insulation composite bushing's electric property's integrality, improves its life.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a partial cross-sectional view of a high voltage insulating composite bushing according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the isolation assembly shown in FIG. 1;

the reference numbers illustrate: bushing body 10, insulator 11, electrode 12, connection hole 121, isolation component 20, spacer 21, through hole 211, isolation layer 22, base layer 221, and cover layer 222.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.

Referring to fig. 1, an embodiment of the present invention provides a high voltage insulating composite bushing, which includes a bushing body 10 and an isolation assembly 20 covering the bushing body 10. The bushing body 10 includes an insulator 11 and an electrode 12 embedded in the insulator 11, and a connection hole 121 is formed in the electrode 12. It can be understood that the high-voltage insulating composite bushing in this embodiment is applied to a switch cabinet, one end of the bushing body 10, which is provided with the connecting hole 121, is used for connecting an electrical device, and one end of the bushing body 10, which is away from the connecting hole 121, is used for being fixed on a mounting plate of the switch cabinet.

Referring to fig. 2, the isolation assembly 20 includes a spacer 21 and an isolation layer 22, the isolation layer 22 includes a base layer 221 and a cover layer 222 extending from the periphery of the base layer 221 around the insulator 11, the base layer 221 abuts against one end of the insulator 11, the spacer 21 is embedded in the base layer 221 and fixed at one end of the electrode 12, and the spacer 21 is provided with a through hole 211 communicating with the connection hole 121.

Specifically, isolation layer 22 forms interference fit with insulator 11 and with fixed connection, and isolation layer 22 passes through the cladding of prestressing force at the skin of sleeve pipe body 10, and when receiving the interference of other factors, isolation layer 22 can not produce relative displacement or deviation yet, and can dismantle fast when needing to change. It will be appreciated that in the event of an electrical breakdown or creepage of the high voltage insulating composite bushing, the resulting electrical corrosion mark is formed only on the surface of the isolation layer 22, thereby protecting the electrical integrity of the high voltage insulating composite bushing.

In this embodiment, the isolation layer 22 is integrally formed, the outer peripheral surface of the insulator 11 is a conical surface, and the covering layer 222 is in a conical cylinder shape.

The thickness of the cover layer 222 is 0.5mm-2.5mm to ensure that the mating surface of the isolation layer 22 and the insulator 11 has a permanent prestress.

Specifically, the insulator 11 is made of insulating plastic, the spacer 21 is made of a conductor or semiconductor material, and the isolation layer 22 is made of a flexible or semi-rigid rubber plastic material. In this embodiment, the gasket 21 is a silver-plated copper sheet, and the isolation layer 22 is a silica gel layer.

Further, a gasket 21 is fixed at one end of the electrode 12 to maintain the continuity of the voltage or current, and preferably, the gasket 21 is fastened to the electrode 12 by screws to facilitate disassembly and replacement.

The utility model provides a high-voltage insulation composite bushing, through set up isolation component 20 in sleeve pipe body 10 outside, when taking place electrical breakdown or creepage, only form the galvanic corrosion vestige on isolation component 20, and simple structure, convenient the change is favorable to guaranteeing high-voltage insulation composite bushing's electric property's integrality, improves its life.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A high-voltage insulating composite bushing is characterized by comprising a bushing body and an isolating component coated outside the bushing body; the sleeve body comprises an insulator and an electrode embedded in the insulator, and a connecting hole is formed in the electrode; the isolation assembly comprises a gasket and an isolation layer, the isolation layer comprises a base body layer and a covering layer formed by extending the insulator from the periphery of the base body layer, the base body layer is abutted against one end of the insulator, the gasket is embedded in the base body layer and fixed at one end of the electrode, and a through hole communicated with the connecting hole is formed in the gasket.

2. The high voltage insulating composite bushing according to claim 1, wherein the isolation layer forms an interference fit with the insulator for a secure connection.

3. The high voltage insulating composite bushing according to claim 2, wherein the isolation layer is integrally formed, the outer circumferential surface of the insulator is a conical surface, and the covering layer is in a shape of a conical cylinder.

4. The high voltage insulating composite bushing according to claim 1, wherein the cover layer has a thickness of 0.5mm to 2.5 mm.

5. The high voltage insulating composite bushing according to claim 1, wherein the gasket is a silver-plated copper sheet and the isolation layer is a silicone layer.

6. The high voltage insulating composite bushing according to claim 1, wherein the washer is screwed onto the electrode.