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External series gap lightning arrester

A lightning arrester and external series connection technology, which is applied in the field of overvoltage protection devices, can solve the problems of complicated assembly structure setting of an external gap mechanism, and achieve the effects of simplifying the assembly structure composition, improving the assembly performance and safe use performance, and improving the protection ability.

Inactive Publication Date: 2008-04-02
LIAONING HUALONG ELECTRIC POWER TECH
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Problems solved by technology

[0003] In order to solve the technical disadvantages of the existing surge arrester, such as the complex assembly structure of the outer gap mechanism, the present invention provides a technical solution for the outer series gap arrester

Method used

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Embodiment Construction

[0008] As shown in the specific implementation structure of Fig. 1, Fig. 2 and Fig. 3, the outer series gap arrester of the present invention has a technical structure: the sleeve is arranged in series on the shaft body of the arrester body 8 and is provided with the arrester body 8 to form a discharge outer gap The outer gap electrode 4. In practice, the outer gap electrode 4 can be made of thermally fused alloy material according to the needs of users, so that it can realize the function of thermal melting and rapid and automatic disconnection from the power grid, so as to form a disconnector between the lightning arrester and the power system. What it shows in Fig. 1 is that the outer gap electrode is arranged in series on the lower end shaft body of the arrester body 8, and is insulated from the arrester body 8, and forms a discharge outer gap with the arrester body lower end electrode 3; in order to realize the discharge voltage index of the arrester Adjustable, the outer...

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Abstract

To solve the technical problem of lightning arrester provided with an outside gap mechanism of complicated fabrication structure, the invention provides a technical proposal of lightning arrester with outside series-wound gap. The main content of the technical proposal is that a shaft body sleeved on the lightning arrester body is serially provided with an outside gap electrode forming a discharging outside gap together with the lightning arrester body. Compared with the prior art, the technical proposal has a greatly simplified structure and provides convenient technical reform condition for the lightning arrester to fulfill the requirement of support strength of pin insulator to serve as the pin insulator.

Description

technical field [0001] The invention relates to an overvoltage protection device—a lightning arrester arranged in a high-voltage transmission and distribution line. Background technique [0002] The existing surge arresters installed on high-voltage transmission and distribution lines are basically gapless zinc oxide arresters. Since the main body of this type of arrester is directly connected to the power system, it is subjected to the influence of power frequency voltage and freewheeling, which accelerates the aging of the resistor valve. It is an important hidden danger of electric accidents, and the product safety performance is low. In order to solve the above technical problems, the Chinese patent discloses a patented technical solution with the patent number: ZL03213798.2 and the name: "AC external gap type automatic detachment arrester". The technical solution is: the upper electrode connection end of the arrester The assembly is equipped with a spherical outer gap ...

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Application Information

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IPC IPC(8): H01C7/12H01T1/14H01T4/06H02G13/00
Inventor 刘晓强
Owner LIAONING HUALONG ELECTRIC POWER TECH