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A Composite Pin Insulator with Gap

A technology of insulators and compound needles, applied in the field of compound needle insulators with gaps, can solve the problems of large breakdown voltage dispersion, complex structure forming difficulty, unstable breakdown voltage, etc., to improve the concentration and stability, Good lightning protection effect and reliability, stable discharge environment

Active Publication Date: 2017-07-28
江苏远航电缆附件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most surge arresters with gaps use external fixed gaps. When there is an overvoltage, the high current breakdown gap will be turned on. Due to the large dispersion of the breakdown gap voltage and the fixed gap is directly exposed to the atmosphere, the breakdown voltage will be affected by the environment. effect, resulting in unstable breakdown voltage
The surge arrester with gap also adopts the internal gap structure, but the structure is complex and difficult to form, and the production cost is high

Method used

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  • A Composite Pin Insulator with Gap
  • A Composite Pin Insulator with Gap
  • A Composite Pin Insulator with Gap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like Figure 1-2 As shown, a compound pin insulator with a gap, which includes an insulator component 1, a component with a gap 2, an intermediate connection fitting 3, an upper fitting 4, and a lower fitting 5; the insulator component 1 and the gap component 2 are connected through the middle The fitting 3 is connected; the upper fitting 4 is set on the upper end of the insulator member 1; the upper part of the intermediate connecting fitting 3 is provided with a cylindrical groove for connecting with the lower end of the insulator member 1, and the lower part of the intermediate connecting fitting 3 is provided with a second A metal connecting rod 6 makes its lower part form an annular groove for connecting with the upper end of the band gap member 2; the upper part of the lower metal fitting 5 is provided with a second metal connecting rod 9 so that its inside forms an annular groove for connecting with the band The lower end of the gap member 2 is connected; the gap...

Embodiment 2

[0032] like image 3 As shown, a lightning protection device comprising a composite pin insulator with a gap in Embodiment 1, the lightning protection device includes a composite pin insulator with a gap and a lightning arrester 11 without a gap, and in the composite pin insulator with a gap A metal clamp 13 is arranged outside the intermediate connection fitting 3, and the composite pin insulator with a gap is connected to the non-gap arrester 11 through the metal clamp 13 so that the gap components of the composite pin insulator with a gap are connected in series with the non-gap arrester 11; A piercing jig 13 is provided at the upper end of the gapless arrester 11 .

[0033] For specific applications, such as Figure 4 As shown, through the connection groove of the upper fitting 4 of the composite pin insulator with gap and the piercing fixture at the upper end of the surge arrester without gap, they are respectively connected to the overhead cable, and the upper section o...

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Abstract

The invention discloses a composite pin insulator with a gap. The composite pin insulator comprises an insulator member, a member with a gap, an intermediate connection fitting, an upper fitting and a lower fitting, wherein the insulator member and the member with the gap are connected by the intermediate connection fitting, a first metal connection rod is arranged at a lower part of the intermediate connection fitting, a second metal connection rod is arranged at an upper part of the upper fitting, the member with the gap comprises an epoxy core rod with an inner cavity, a sheath umbrella skit sleeves the epoxy core rod in an annular way, a porcelain tube is arranged in the inner cavity of the epoxy core rod, and the first metal connection rod of the intermediate connection fitting and the second metal connection rod of the lower fitting respectively extend to the porcelain tube to form a fixed gap from an upper port and a lower port of the inner cavity of the epoxy core rod. The composite pin insulator with the gap is simple in structure and is relatively easy to form; and when the composite pin insulator with the gap is connected in series with a gapless arrester for use, the function of a gap arrester is achieved by the gapless arrester, the gapless arrester has favorable lightning prevention effect and reliability, and the running level of a circuit can be greatly improved.

Description

technical field [0001] The invention relates to a pin-type insulator, in particular to a composite pin-type insulator with a gap. The insulator has a fixed gap inside and can be used in conjunction with a non-gap arrester so that the gap-free arrester has the function of a gap-free arrester. Background technique [0002] Transmission lines, especially high-voltage transmission lines, need to pay attention to many problems during the overhead laying process, the most common of which are line support, line insulation and overvoltage protection. At present, insulators are used to solve the problem of supporting wires and preventing current from returning to the ground, and lightning arresters are used to protect transmission lines and electrical equipment from atmospheric overvoltage (usually lightning strikes) and operating overvoltage damage. In high-voltage transmission lines, one end of the insulator is hung on the iron tower, and the other end is hung with wires. Under nor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/20H01B17/38H01B17/46H01C7/12
CPCH01B17/20H01B17/38H01B17/46H01C7/12
Inventor 夏兰徐勤民丁华平
Owner 江苏远航电缆附件有限公司