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Composite post insulator manufacture method

A technology of pillar insulators and lining tubes, applied in the direction of supporting insulators, etc., can solve the problems of insufficiency and aging, and achieve the effects of small leakage current, enhanced load-bearing and compressive capacity, good electrical insulation characteristics and corona characteristics

Inactive Publication Date: 2014-10-15
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

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Comparison scheme
Effect test

example 1

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

[0027] (1) Preparation of liner

[0028] Clamp the FRP mandrel on the winding machine, wind the glass fiber tape onto the FRP mandrel by scraping low-temperature glue while winding to form a glass fiber layer, and wrap 4 layers of heat shrinkable tape on the outside of the glass fiber layer. After coating 3 layers of demoulding PTFE tape, place the FRP mandrel coated with the above materials in an oven to cure to obtain an inner liner;

[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 Solidify at 110°C for 1 hour and then cool to room temperature;

[0030] When the glass fiber is wound, the outer glass fiber is covered on the inner glass fiber, so that the exposed...

example 2

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

[0041] (1) Preparation of liner

[0042] Clamp the FRP mandrel on the winding machine, wind the glass fiber tape onto the FRP mandrel by scraping low-temperature glue while winding to form a glass fiber layer, and wrap the glass fiber layer with 5 layers of heat-shrinkable tape. After coating 3 layers of demoulding PTFE tape, place the FRP mandrel coated with the above materials in an oven to cure to obtain an inner liner;

[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. Stage curing at 110°C for 0.5h and then cooling to room temperature;

[0044] When the glass fiber is wound, the outer glass fiber is covered on the inn...

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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 post insulator. Background technique [0002] At present, the main grid structure of my country's power grid is composed of 500kV AC and ±500kV DC systems. The power grid is facing the dual challenges of weak transmission capacity and insufficient stability. The development of my country's energy resources and productivity is reversed, and energy-rich areas are far away from economically developed areas. Therefore, long-distance and large-capacity power transmission is an inevitable trend in the development of my country's future power grid, and UHV power transmission is a power transmission method with this capability. In order to meet the needs of the country's electricity consumption, realize the optimal allocation of resources, solve hidden dangers of system security and stability, and save transmission line corridor resources, both the State Grid Corporation of China and China Southern ...

Claims

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Application Information

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IPC IPC(8): H01B17/14
Inventor 包廷贵蒋兴良
Owner ZHENJIANG JIANGGUAN ELECTRIC POWER EQUIP
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