Composite protective cover insulator lightning arrester and producing method thereof

A technology of insulator arrester and composite jacket, applied in insulators, overvoltage protection resistors, electrical components, etc., can solve the problems of uneven volt-second characteristic curve, difficulty in matching volt-second characteristics, and inability to promote composite insulators.

Inactive Publication Date: 2007-08-08
NINGBO ELECTRIC POWER BUREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent of invention of CN1037472C discloses the manufacturing method of lightning arrester insulators of a Japanese company, and its disadvantages are: 1. The realization method is difficult and very complicated, and can only be done in porcelain or glass insulators
It cannot be extended to composite insulators, which are currently widely used and whose usage is further expanded.
2. There is a discharge gap in the structure, it is difficult to control the discharge voltage of the gap, the volt-second characteristic curve is not smooth, and it is difficult to match the volt-second characteristic of the protected equipment

Method used

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  • Composite protective cover insulator lightning arrester and producing method thereof
  • Composite protective cover insulator lightning arrester and producing method thereof

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Embodiment Construction

[0021] In order to better understand the present invention, two examples of 35 kV and 110 kV are introduced below to further illustrate the process of the present invention.

[0022] The first step: use glass fiber and epoxy resin to glue together and solidify to form an insulating mandrel 2 and an insulating sleeve 9, and coat a silicone protective layer 7 on the outside of the insulating mandrel and the sleeve.

[0023] In order to ensure the dryness inside the insulator arrester and avoid bringing in moisture, all the spare parts used, including zinc oxide rings, desiccant, conductive tape, compression springs, upper and lower end fittings, insulating mandrels and sleeves, etc., are wiped with alcohol in advance. After scrubbing clean, put it in an oven to dry at 90°C for later use.

[0024] Step 2: Place the carefully selected mandrel in a special mold and inject glue to form a protective layer with a thickness of 5-10mm to buffer the impact on the mandrel in case the arre...

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Abstract

A lightning arrestor with composite isolative casings consists of connecting parts at its both ends, zinc oxide valve sheets and multi-fold umbrella-shape isolative casing. The annular zinc oxide sleeved outside of a glass fiber bar as a core, a drying agent layer installed at its bottom and a sealed isolating chamber installed at its top, an isolative cylinder sleeved outside of them said above, a multi-fold silicon gel cover attached on outer of the isolative cylinder. It makes effect point shift from zinc oxide sheets to the glass fiber bar and isolative casing, so as to increase load ability and tension resistance strength. The drying agent makes performance stable, anti-fouling and has good hydrophobicity.

Description

technical field [0001] The invention relates to a manufacturing technology of a composite jacket insulator lightning arrester, and a manufacturing method of integrating the function of an insulator into the lightning arrester. Background technique [0002] Installing zinc oxide arresters on transmission line towers, using its good overvoltage limiting ability to improve the lightning protection level of transmission lines, has successful experience in China. However, there is no such method of manufacturing both the arrester and the composite insulator in one body in China. This method has been used in foreign countries. For example, in Japan, zinc oxide valves and discharge gaps are built into porcelain insulators or glass insulators to realize the combination of the two (the function of the arrester is integrated in the insulator, and the main body is the insulator). The structure is unified. on insulators. The patent of invention of CN1037472C discloses a Japanese compa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/42H01B19/00H01C7/12
Inventor 陈鸿飞黄晓明李向军梁继勇余长水应芷芩周立波
Owner NINGBO ELECTRIC POWER BUREA
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