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Composite post insulator

A technology of lined pipes and metal ends, applied in the direction of supporting insulators, insulators, electrical components, etc., can solve problems such as insufficiency and aging, and achieve the effect of reducing self-weight, enhancing load-bearing and compressive capacity, and reducing costs

Inactive Publication Date: 2014-10-08
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

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Embodiment Construction

[0016] As shown in the figure, a composite post insulator includes a liner pipe 1 and a metal end pipe 2, wherein a metal end pipe 2 is respectively fixed at both ends of the liner pipe 1, and the liner pipe 1 includes a hollow fiberglass core Rod 3, the fiberglass mandrel 3 is covered with a layer of glass fiber tape 4, the glass fiber tape 4 is covered with a layer of heat-shrinkable tape 5, and the heat-shrinkable tape 5 is covered with a layer of Demoulding PTFE tape layer 6, the metal end pipe 2 includes a tube body 7, a circle of umbrella skirt 8 is provided on the outer surface of the tube body 7, the diameter of the umbrella skirt 8 is 30mm, and one end of the umbrella skirt 8 is provided with There is a clamping structure 9, the clamping structure 9 includes a connecting seat 10, the cross-sectional shape of the connecting seat 10 is a T-shaped structure, one end of the connecting seat 10 is fixedly connected with the umbrella skirt 8, and the other end is welded with ...

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Abstract

The invention relates to a composite post insulator. The composite post insulator comprises a liner pipe and metal end pipes, wherein the two ends of the liner pipe are respectively provided with one metal end pipe. The liner pipe comprises a hollow glass steel core rod covered with a glass fiber tape layer. The glass fiber tape layer is covered with a thermal shrinkage tape layer. The thermal shrinkage tape layer is covered with a demolding Teflon tape layer. Each metal end pipe comprises a pipe body. The outer surface of the pipe body of each metal end pipe is provided with a ring of umbrella skirt in the circumference direction. One end of a connection base is fixedly connected with the corresponding umbrella skirt, the composite post insulator is widely applied to the low-temperature engineering field, and the low-temperature mechanical property, the electrical property and the high-voltage-resistant air-tightness of the composite post insulator are good.

Description

technical field [0001] The invention relates to 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 Power Grid Corporation h...

Claims

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Application Information

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IPC IPC(8): H01B17/14H01B17/42
Inventor 蒋兴良包廷贵
Owner ZHENJIANG JIANGGUAN ELECTRIC POWER EQUIP
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