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A kind of preparation method of composite post insulator

A technology of pillar insulators and lining pipes, applied in the direction of supporting insulators, etc., can solve problems such as aging and unsatisfactory, and achieve the effects of enhanced load-bearing and compression resistance, small leakage current, good electrical insulation characteristics and corona characteristics

Inactive Publication Date: 2017-02-08
ZHENJIANG JIANGGUAN ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of the voltage level of DC transmission projects, the length of post insulators is getting longer and longer. Porcelain post insulators are far from being able to meet the external insulation requirements of UHV DC transmission projects under complex environmental conditions such as high altitude, pollution, and ice. Composite post insulators are the only option to solve the problem of UHV external insulation in complex environment areas, and the high-temperature fluidized silicone rubber commonly used in existing composite insulators has aging problems in strong ultraviolet rays and strong alkali environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] A preparation method of a composite pillar insulator, the preparation method is as follows:

[0027] (1) Preparation of lined pipe

[0028] The glass fiber reinforced plastic mandrel is clamped on the winding machine, and the glass fiber tape is wound on the glass fiber reinforced plastic mandrel by scraping low-temperature glue while winding to form a glass fiber layer. After coating 3 layers of mold-releasing tetrafluoro tapes, place the glass fiber reinforced plastic mandrel coated with the above-mentioned materials in an oven to solidify to obtain a lined pipe;

[0029] The curing process is divided into four stages: the first stage is cured at a temperature of 80 °C for 2 hours, the second stage is cured at a temperature of 90 °C for 2 hours, the third stage is cured at a temperature of 100 °C for 1 hour, and the fourth stage is cured at a temperature of 1 hour. After curing at 110°C for 1 hour, it can be cooled to room temperature;

[0030] When the glass fiber ...

example 2

[0040] A preparation method of a composite pillar insulator, the preparation method is as follows:

[0041] (1) Preparation of lined pipe

[0042] The glass fiber reinforced plastic mandrel is clamped on the winding machine, and the glass fiber tape is wound on the glass fiber reinforced plastic mandrel by scraping low-temperature glue while winding to form a glass fiber layer. After coating 3 layers of mold-releasing tetrafluoro tapes, place the glass fiber reinforced plastic mandrel coated with the above-mentioned materials in an oven to solidify to obtain a lined pipe;

[0043]The curing process is divided into four stages: the first stage is cured at a temperature of 80 °C for 1 hour, the second stage is cured at a temperature of 90 °C for 1 hour, the third stage is cured at a temperature of 100 °C for 0.5 hours, and the fourth stage is cured at a temperature of 100 °C for 1 hour. The stage can be cured at a temperature of 110 ° C for 0.5 h and then cooled to room tempera...

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Abstract

The invention relates to a composite post insulator manufacture method. The manufacture method includes the following steps of (1) manufacturing a lining pipe and winding a glass fiber layer, a thermal shrinkage tape layer and a demolding Teflon tape layer on a glass steel core rod; (2) manufacturing a left end pipe and a right end pipe and subjecting the left end pipe and the right end pipe to surface processing; (3) gluing the left end pipe and the right end pipe to two ends of the lining pipe. By means of the composite post insulator manufacture method, a composite post insulator is widely applicable to fields of cryogenic engineering, good in cryogenic mechanical property, electrical property and gas tightness, and resistant to high pressure.

Description

technical field [0001] The invention relates to a preparation method of a composite pillar insulator. Background technique [0002] At present, the main grid of my country's power grid is composed of 500kV AC and ±500kV DC systems, and the power grid faces the dual challenges of weak transmission capacity and insufficient stability. The development of my country's energy resources and productivity is in a reverse distribution, and energy-rich areas are far away from economically developed areas. Therefore, long-distance and large-capacity power transmission is the inevitable trend of my country's future power grid development, and UHV power transmission is the power transmission mode with this capability. In order to meet the needs of national electricity consumption, realize the optimal allocation of resources, solve the hidden danger of system security and stability, and save the resources of transmission line corridors, both the State Grid Corporation of China and China ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/14
Inventor 包廷贵蒋兴良
Owner ZHENJIANG JIANGGUAN ELECTRIC POWER EQUIP