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High-pressure hollow combined insulator high-pressure side once glue sealing method

A composite insulator, high-voltage terminal technology, used in insulators, lead-in/through-type insulators, electrical components, etc., can solve the problems of poor external erosion ability, affecting product reliability, affecting product life, etc., to solve the hidden danger of end sealing , Improve the appearance, electrical performance and reliability, and improve the effect of product life

Active Publication Date: 2010-12-15
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in the prior art are: 1. The sealing of the end is not good, and the ability to withstand long-term external erosion is poor, which in turn affects the life of the product
[0003] 2. The appearance quality is poor, the local field strength is large, and the surface electric corrosion damage is strengthened to affect the reliability of the product

Method used

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  • High-pressure hollow combined insulator high-pressure side once glue sealing method
  • High-pressure hollow combined insulator high-pressure side once glue sealing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) The upper flange 1 of the high-voltage end of the high-voltage hollow composite insulator and the upper end of the insulating cylinder 3 of the high-voltage hollow composite insulator are glued first;

[0016] (2) After the glue-fitting is completed, the outer insulating umbrella cover 4 is formed in sections on the insulating cylinder 3, and each section adopts an integral injection process, wherein when the first section of the outer insulating umbrella cover 4 is formed, the material of the outer insulating umbrella cover 4 is injected To the outer surface of the insulating cylinder 3 and the flange part of the high-voltage end, vulcanize and mold at the same time to form a whole of the injected outer insulating umbrella cover material. The temperature of the molding process is 110°C, the molding pressure is 110MPa, and the molding time is 2h, and then proceed to the second stage in sequence. The outer insulating umbrella cover 4 of the first section, the third se...

Embodiment 2

[0020] (1) The upper flange 1 of the high-voltage end of the high-voltage hollow composite insulator and the upper end of the insulating cylinder 3 of the high-voltage hollow composite insulator are glued first;

[0021] (2) After the glue-fitting is completed, the outer insulating umbrella cover 4 is formed in sections on the insulating cylinder 3, and each section adopts an integral injection process, wherein when the first section of the outer insulating umbrella cover 4 is formed, the material of the outer insulating umbrella cover 4 is injected To the outer surface of the insulating cylinder 3 and the flange part of the high-voltage end, vulcanization molding is performed at the same time so that the injected outer insulating sheath material forms a whole. The temperature of the molding process is 115°C, the molding pressure is 120Mpa, the molding time is 2.5h, and then the second step is carried out in sequence. The outer insulating umbrella cover 4 of the second section,...

Embodiment 3

[0025] (1) The upper flange 1 of the high-voltage end of the high-voltage hollow composite insulator and the upper end of the insulating cylinder 3 of the high-voltage hollow composite insulator are glued first;

[0026] (2) After the glue-fitting is completed, the outer insulating umbrella cover 4 is formed in sections on the insulating cylinder 3, and each section adopts an integral injection process, wherein when the first section of the outer insulating umbrella cover 4 is formed, the material of the outer insulating umbrella cover 4 is injected To the outer surface of the insulating cylinder 3 and the flange part of the high-voltage end, vulcanization molding is performed at the same time to form a whole of the injected outer insulating umbrella cover material. The temperature of the molding process is 119 ° C, the molding pressure is 140 Mpa, and the molding time is 3 hours, and then proceed to the second stage in sequence. The outer insulating umbrella cover 4 of the fir...

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Abstract

The invention discloses a method for sealing high-pressure end of a high-pressure hollow composite insulator in one step, which comprises injecting an outer insulation umbrella cover material into an insulation barrel and the outer surface of a high-pressure-end flange portion in a first molding step of the outer insulation umbrella cover at the high-pressure end of the high-pressure hollow composite insulator; and simultaneously vulcanization-molding to integrate the injected outer insulation umbrella cover material. Accordingly, the one-step sealing method can effectively solve the sealing performance of the high-pressure end, such that the high-pressure end can endure the external corrosion for long time and the product life is improved. The envelope of the high-pressure-end flange caneffectively solve the problem caused by large local field intensity, reduce the influence of electrical erosion, and improve the product reliability.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a high-voltage hollow composite insulator primary sealing technology for high-voltage ends. Background technique [0002] Hollow composite insulators are composed of insulating cylinders, upper and lower flanges and outer insulating umbrella sleeves. At present, the existing domestic hollow composite insulator molding technology is as follows: firstly, an outer insulating umbrella cover is formed on the outer surface of the insulating cylinder of the hollow composite insulator; secondly, the upper and lower ends of the hollow composite insulator insulating cylinder are glued to the upper and lower flanges respectively; thirdly, The upper and lower ends of the hollow composite insulator are sealed twice. Since this process step is to form the sheath first and then glue it, there is always a gap between the outer insulating sheath of the hollow composi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B19/00H01B17/26
Inventor 孙西昌党镇平李西育李婷姚喜年陈林山武庆周
Owner CHINA XD ELECTRIC CO LTD