Composite dry-type wall-pie

A wall-penetrating bushing, dry-type technology, applied in the direction of pipes, pipes/pipe joints/pipes, electrical components, etc., can solve problems such as falling off, sliding screen, broken screen, etc., to reduce internal stress, overcome easy sliding screen, The effect of improving safety and service life

Inactive Publication Date: 2006-08-09
SHANGHAI ZHUOGAO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very easy to have sliding screen, broken screen, falling off, etc., which reduces the safety and service life of the wall bushing

Method used

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  • Composite dry-type wall-pie

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Embodiment Construction

[0032] The preferred embodiments of the present invention are given below to describe the technical solution of the present invention in detail.

[0033] A composite dry-type wall casing wrapping process, including:

[0034] In the first step, the zeroth screen wraps the semi-conductive tape on the conductive rod.

[0035] Two more layers are required at both ends, tapered inwards. And flatten the overlapping part of the semi-conductive tape. The semi-conductive tape should be evenly wrapped around the stainless steel wrapping area, and no stainless steel tube should be exposed.

[0036] The second step is to apply silicone oil.

[0037] Before applying silicone oil, clean off the semi-conductive foam on the conductive rod. Then, apply a layer of silicone oil on the surface of the flattened semi-conductive tape. The amount of silicone oil is moderate, spread evenly, so that the silicone oil can fully fill the gaps in the pits.

[0038] The third step is to wrap the PTFE ...

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PUM

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Abstract

Frame by frame backing method is adopted in the invention to wrap Teflon strap. In wrapping procedure, strain of Teflon strap is controlled. Reducing internal stress of wall bushing, the method overcomes issues that insulating wrapping layer for dry type wall bushing in high pressure is easy of sliding frame, and falling off. The invention increases safety and operating life of wall bushing.

Description

technical field [0001] The invention relates to a wrapping process of a composite dry-type wall-piercing bushing, in particular to a wrapping process of a high-voltage composite dry-type wall-piercing bushing used in a power grid of 35kV and above. Background technique [0002] Today, there is a dry-type high-voltage wall bushing made of organic synthetic material insulation on the market. The feature of the high-voltage wall bushing is: the primary conductor (or conductive rod) passes through the inner hole of the tubular rigid support frame made of non-magnetic material (generally stainless steel tube), and the tubular support frame is surrounded by insulation. layer and the corresponding capacitance layer to form a field-equalizing structure. The outside of the insulating layer is covered with an insulating outer sheath of an umbrella skirt, and a mounting flange is fixed outside the middle of the product. There are measuring outlet terminals on the flange, and there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G3/22F16L5/00
Inventor 黄志宏尤屹张军仿唐凯
Owner SHANGHAI ZHUOGAO ELECTRIC
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