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Hollow composite insulator and method of producing the same

A composite insulator, hollow technology, applied in insulators, electrical components, circuits, etc., can solve the problems affecting the electrical performance and service life of composite insulators, safety accidents, product scrapping, etc., to eliminate potential safety hazards, prolong service life, and save operations. effect of steps

Inactive Publication Date: 2011-04-20
湖南省电力公司电瓷电器厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the thickness of the umbrella cover is usually thin, the silicone rubber umbrella sleeve of the composite insulator of this structure becomes the weak link of insulation. During use, due to climate change and other reasons, the silicone rubber shrinks the umbrella connection part. The overlapping surface of the composite insulator will inevitably be subjected to axial tension, and it is easy to be thinned and cracked, which will seriously affect the electrical performance and service life of the composite insulator, and may even directly lead to product scrapping and safety accidents. Major hidden dangers of ultra-high voltage power transmission and transformation equipment

Method used

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  • Hollow composite insulator and method of producing the same
  • Hollow composite insulator and method of producing the same
  • Hollow composite insulator and method of producing the same

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Embodiment 1

[0020] Such as figure 2 , image 3 As shown, in the prior art, the radial overlapping surface joint structure and the oblique surface overlapping joint structure are generally used, that is, the umbrella sleeve part of the previous injection molding is repaired into a straight surface or an inclined surface, and glue is applied on the straight surface or the inclined surface. Adhesive, and then directly followed by injection molding of silicone rubber to form the umbrella cover of the next mold, which is connected in sequence until the whole product is made.

[0021] Such as figure 1 , 4 As shown, the present invention is composed of an insulating mandrel inner cylinder 1 made of glass fiber reinforced plastics, an aluminum end flange 2, and a silicone rubber umbrella cover 3. The silicone rubber umbrella cover 3 is composed of more than two silicone rubber umbrella covers that are sequentially injection molded. The connection structure between two adjacent silicone rubber...

Embodiment 2

[0024] Such as figure 2 , image 3 As shown, in the prior art, the radial overlapping surface joint structure and the oblique surface overlapping joint structure are generally used, that is, the umbrella sleeve part of the previous injection molding is repaired into a straight surface or an inclined surface, and glue is applied on the straight surface or the inclined surface. Adhesive, and then directly followed by injection molding of silicone rubber to form the umbrella cover of the next mold, which is connected in sequence until the whole product is made.

[0025] Such as figure 1 , 4 As shown, the present invention is composed of an insulating mandrel inner cylinder 1 made of glass fiber reinforced plastics, an aluminum end flange 2, and a silicone rubber umbrella cover 3. The silicone rubber umbrella cover 3 is composed of more than two silicone rubber umbrella covers that are sequentially injection molded. The connection structure between two adjacent silicone rubber...

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Abstract

The invention relates to a hollow composite insulator and a method for producing the same. The hollow composite insulator consists of an insulating mandrel inner cylinder, an end flange and a silicon rubber shed, wherein, the silicon rubber shed is formed by connecting more than two silicon rubber shed sections, a connecting structure between the two adjacent silicon rubber sheds is of a step type lapping structure, namely the tail end of one shed section processed at the previous time is a step-type front section lapping ring with the outer diameter less than that of the shed section, the front section lapping ring is coated with adhesive, a front section of one shed segment processed at the next time is a rear section lapping ring with the inner diameter matched with the lapping ring, and the front section lapping ring and the rear section lapping ring are bonded and connected by the adhesive. The lapping structure of the hollow composite insulator increases lapping bonding area andstrengthens connecting strength between the two sheds when the silicon rubber sheds bear an axial tensile force, the phenomena of stretch-thinning and ripping produced due to the shrinkage of siliconrubber are greatly decreased, thereby guaranteeing the electrical performance of the hollow composite insulator and prolonging the service life of the hollow composite insulator.

Description

technical field [0001] The invention relates to high-voltage power transmission and transformation equipment and a production method thereof, in particular to a hollow composite insulator and a production method thereof. Background technique [0002] Hollow composite insulators are gradually replacing traditional porcelain insulators and glass insulators with their superior electrical and mechanical properties. Especially in ultra-high voltage and ultra-high voltage power transmission and transformation equipment, the superior performance of hollow composite insulators is even more reflected. Composite insulators are composed of three parts: insulating mandrel, silicone rubber sheath and connecting fittings at both ends. Silicone rubber is an insulating material with superior performance, and the umbrella cover made of it plays the role of external insulation. Most of the high-voltage and ultra-high-voltage composite insulators are relatively long and have a large number o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/00H01B19/00
Inventor 李文军石磊
Owner 湖南省电力公司电瓷电器厂
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