CN201331986Y

CN201331986Y - Connect-disconnect arrester

Info

Publication number: CN201331986Y
Application number: CNU2009200317035U
Authority: CN
Inventors: 叶德平; 杨筱安
Original assignee: Xian Shendian Electronics Co Ltd
Current assignee: Xian Shendian Electronics Co Ltd
Priority date: 2009-01-15
Filing date: 2009-01-15
Publication date: 2009-10-21
Anticipated expiration: 2019-01-15

Abstract

The utility model relates to a connect-disconnect arrester with a shielding cover which includes an organic coat, a connect-disconnect hole and a core body, the core body is set in the organic coat; one end of the core body is a high voltage lead-in terminal, another end is a ground connection terminal; the high voltage lead-in terminal is set in the connect-disconnect hole, the high voltage lead-in terminal of the core body is equipped with the shielding cover, the high voltage lead-in terminal electrical connects with the shielding cover. The connect-disconnect arrester solves problem of large partial discharging amount, poor protective ability and short service lift caused by uneven electric field of the high voltage lead-in terminal of the connect-disconnect arrester in background technical. The high voltage lead-in terminal of the core body adds the shielding cover in the connect-disconnect hole of the connect-disconnect arrester which can improve equality of the high voltage lead-in terminal electrical field of the core body, avoid danger caused by large partial discharging of the arrester, increases protective ability of the connect-disconnect arrester and prolongs the service lift.

Description

A kind of plug-in lightning arrester

Technical field

The utility model relates to a kind of plug formula lightning arrester, is specifically related to a kind of plug-in lightning arrester with radome.

Background technology

Existing plug-in lightning arrester mainly is divided into elbow-shaped inserting/pulling type lightning arrester and T type plug-in lightning arrester.

Elbow-shaped inserting/pulling type lightning arrester and T type plug-in lightning arrester adopt composite sheath with resistor disc core body sulfidization molding; stretch out at the place, core body high pressure end of incoming cables of sulfidization molding simultaneously and form the plug hole; as the high pressure inlet wire of lightning arrester with install and fix usefulness, again lightning arrester is inserted the system implementation protection that needs overvoltage protection.

After the high pressure inlet wire of elbow-shaped inserting/pulling type lightning arrester and T type plug-in lightning arrester is introduced by the plug hole; be connected with the high pressure end of incoming cables of resistor disc core body in inside, plug hole,, thereby cause the partial discharge quantity of lightning arrester big herein because electric field is inhomogeneous; protective value is poor, and useful life is short.

Summary of the invention

The purpose of this utility model is to provide a kind of plug-in lightning arrester with radome, and it is inhomogeneous mainly to have solved in the background technology high pressure end of incoming cables electric field of plug-in lightning arrester, causes the lightning arrester partial discharge quantity big, and protective value is poor, the problem that useful life is short.

Technical solution of the present utility model:

A kind of plug-in lightning arrester comprises organic overcoat 1, plug hole 2, and core body 4, core body 4 are located in organic overcoat 1; Described core body 4 one ends are high pressure ends of incoming cables 41, and the other end is an earth terminal 42; Described high pressure end of incoming cables 41 is located in the plug hole 2, it is characterized in that: the high pressure end of incoming cables 41 of described core body 4 is provided with radome 3, and described high pressure end of incoming cables 41 is to be electrically connected with radome 3.

Above-described radome 3 is metallic shields.

The above radome 3 is corresponding with high pressure end of incoming cables 41 shapes.

The above organic overcoat 1 is according to the profile one-tenth T-shape capable of being combined or the elbow type structure in plug hole.

Advantage of the present utility model is:

In the plug hole of plug-in lightning arrester; radome has been set up in the high pressure end of incoming cables of core body, has improved the uniformity of the high pressure end of incoming cables electric field of core body, has avoided the harm of the big generation of lightning arrester partial discharge quantity; improve the protective value of plug-in lightning arrester, prolonged useful life.

Description of drawings

Fig. 1 is the structural representation of T type plug-in lightning arrester;

Fig. 2 is the structural representation of elbow-shaped inserting/pulling type lightning arrester.

Embodiment

The utility model embodiment is in conjunction with Fig. 1, shown in Figure 2:

The plug-in lightning arrester of band radome comprises organic overcoat 1, plug hole 2 and core body 4, and organic overcoat 1 is a T-shape, plug hole 2 and core body 4 are located in the composite sheath 1; Core body 4 one ends are high pressure ends of incoming cables 41, and core body 4 other ends are earth terminals 42; High pressure end of incoming cables 41 is located in the plug hole 2.Radome 3 is located on the high pressure end of incoming cables 41, is to be electrically connected with high pressure end of incoming cables 41; Radome 3 is selected the radome of metal material for use; The shape of radome 3 is processed according to high pressure end of incoming cables 41 shapes; The profile of organic overcoat also can be selected shapes such as elbow type for use except that selecting T-shape for use.

Claims

1, a kind of plug-in lightning arrester comprises organic overcoat (1), plug hole (2), and core body (4), described core body (4) are located in organic overcoat (1); Described core body (4) one ends are high pressure end of incoming cables (41), and the other end is earth terminal (42); Described high pressure end of incoming cables (41) is located in the plug hole (2), it is characterized in that: the high pressure end of incoming cables (41) of described core body (4) is provided with radome (3), and described high pressure end of incoming cables (41) is to be electrically connected with radome (3).

2, according to the plug-in lightning arrester of the described band radome of claim 1, it is characterized in that: described radome (3) is a metallic shield.

3, according to the plug-in lightning arrester of claim 1 or 2 described band radomes, it is characterized in that: described radome (3) is corresponding with high pressure end of incoming cables (41) shape.

4, according to the plug-in lightning arrester of the described band radome of claim 3, it is characterized in that: described organic overcoat (1) is combined into T-shape or elbow type structure according to the profile in plug hole.