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Anti-corona ball used for squirrel-cage rigid jumper device

A rigid jumper, anti-corona ball technology, applied in overhead installation, cable installation, electrical components and other directions, can solve the problem of limited improvement effect, achieve the effect of simple structure, suppression of corona discharge, and low production cost

Active Publication Date: 2014-12-17
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above technologies are mainly aimed at improving the structure of the jumper device, and the improvement effect is limited

Method used

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  • Anti-corona ball used for squirrel-cage rigid jumper device
  • Anti-corona ball used for squirrel-cage rigid jumper device
  • Anti-corona ball used for squirrel-cage rigid jumper device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] as attached figure 1 As shown, the overall schematic diagram of the anti-sickness ball, the spherical shell, the interior is hollow, and is made of aluminum alloy material, and the anti-sickness ball can be divided into two parts: a hemispherical shell 1 and a bolt 2 . The side view and cross-sectional view of the anti-halo ball (hemisphere) are as follows: figure 2 As shown, the top view and section view of the anti-halo ball (hemisphere) are as follows image 3 shown.

[0034] The radius R of the outer surface of the hemispherical shell 1 is not less than 50mm, and the internal size is related to the size of the matching spacer, wherein the hollow part is larger than the size of the spacer clamp head. The diameter D1 of the inner surface of the mounting hole 3 should be larger than the size of the arm of the spacer clamp to ensure that the anti-halation ball can completely shield the head of the clamp without exerting additional pressure on the arm of the clamp.

...

Embodiment 2

[0038] The preparation material of anti-halation ball of the present invention can select ZL-102 aluminum alloy material for use, about ZL-102 aluminum alloy material, introduce as follows:

[0039] Material name: ZAlSi12

[0040] Alloy code: ZL102

[0041] Standard: GB / T 1173-1995

[0042] Features and scope of application:

[0043] It cannot be strengthened by heat treatment. The alloy has excellent casting performance, no hot cracking and loose tendency, and high air tightness. It has low density and good corrosion resistance. It can be used in environments subject to atmospheric and seawater corrosion, and can withstand the corrosion of concentrated nitric acid and hydrogen peroxide in industrial atmospheres. It also has good welding performance. However, the alloy has low mechanical properties, poor heat resistance and machinability.

[0044] chemical composition:

[0045] Silicon Si: 10.0-13.0

[0046] Aluminum Al: balance

[0047] Iron (sand casting): 0.000~0.700...

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Abstract

The invention provides an anti-corona ball used for a squirrel-cage rigid jumper device, belonging to the field of overhead installation of electric wires or cables. The anti-corona ball provided by the invention is arranged on the cable clamp of the spacing rod at the end part of the squirrel-cage rigid jumper device in a 750KV transmission line, a curvature radius at the contact spot between the end part of the spacing rod and a lead wire can be indirectly increased, so the anti-corona ball has a regular round surface in appearance, accordingly, the distribution of electric-field strength on the surface of the end part of the spacing rod can be effectively improved, the corona discharge phenomenon of the end part can be restrained, the corona noise and the corona loss in a transmission line can be reduced as well as energy conservation and noised reduction can be realized. The anti-corona ball comprises hemispherical shells and a bolt, wherein the two hemispherical shells are fastened together by using the embedded bolt. The anti-corona ball provided by the invention has a small volume and light weight, is convenient to install, does not need to disassemble other gold fittings in the original line during installing and is easy to operate and maintain.

Description

technical field [0001] The invention belongs to the field of aerial installation of electric wires or cables, and in particular relates to an anti-sickness ball used for a squirrel-cage rigid jumper. Background technique [0002] Corona noise is produced by conductor partial discharge or corona, which is closely related to the level of voltage. If the voltage level is high and the electrical wiring is complicated, the higher the local field strength on the surface of the charged conductor, the easier it is for partial discharge or corona occur. The corona is generated because the uneven conductor produces an uneven electric field. Near the electrode with a small curvature radius around the uneven electric field, when the voltage rises to a certain value, the electric field strength on the surface of the electrode exceeds the breakdown strength of the air molecule. discharge, forming a corona. Corona consumes energy, and the pulsed electromagnetic waves generated by corona ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/00
Inventor 黄廷政莫娟黄彭沈鸿冰
Owner CHINA ELECTRIC POWER RES INST
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