Production process of rod-shaped porcelain insulator for high-speed rail overhead contact system

A porcelain insulator and production process technology, applied in the field of rod-shaped porcelain insulator production process, can solve the problems of low product qualification rate, poor anti-fouling performance, small bending damage load, etc., and achieve good anti-fouling performance and plastic packaging pass rate High, stable production quality effect

Active Publication Date: 2015-11-18
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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AI Technical Summary

Problems solved by technology

This process solves the problems of small bending failure load (≤25kN), poor anti-fouling perform

Method used

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  • Production process of rod-shaped porcelain insulator for high-speed rail overhead contact system
  • Production process of rod-shaped porcelain insulator for high-speed rail overhead contact system

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with specific embodiments.

[0023] Porcelain rod insulators are key components in electrified high-speed railway catenary. Pollution-resistant electrified railway catenary rod-shaped porcelain insulators for high-speed railways are used for power frequency single-phase 25kV (27.5kV) electrified railway catenary contact wire insulation and fixed wires. With the gradual speed up of high-speed railways, higher requirements are put forward for the electromechanical performance of rod-shaped porcelain insulators for catenary. In order to satisfy 350Km / h and above high-speed railways with safe and reliable driving, improve the qualified rate of products, and increase benefits, the present invention proceeds from the following links to produce rod-shaped porcelain insulators for high-speed railway catenary.

[0024]1. Raw material optimization and control: the present invention starts with the raw...

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Abstract

The invention discloses a production process of a rod-shaped porcelain insulator for a high-speed rail overhead contact system. In ball-milling, the following raw materials in weight percentage are adopted: 30 to 45%wt of calcined high-alumina bauxite; 25 to 30 %wt of Qingling kaoline; 15 to 20% wt of Xuyong kaoline; 2 to 6%wt of Jiangbei clay; 3 to 6%wt of Guizhou kaoline; 1 to 3% wt of Bijie mud; 3 to 5% wt of feldspar; and 0.3 to 0.5% wt of nanometre alumina powder. Materials in a formula are selected optimally to produce the rod-shaped porcelain insulator for the high-speed rail overhead contact system, and the mechanical and electrical properties of the rod-shaped porcelain insulator are excellent, and the bending damage load of the rod-shaped porcelain insulator is greater than 25kN, and the creepage distance of the insulator is above 1600mm, and the produced insulator has an excellent antifouling property, and the pollution flashover voltage of the insulator is increased to 36KV; the qualified rates of porcelain inspection, electric inspection and cementing of the insulator are high, and production quality is stable; and the product can be applied to high-speed rail overhead contact systems of 350Km/h or above.

Description

technical field [0001] The invention relates to a production process of a rod-shaped porcelain insulator. The rod-shaped porcelain insulator is mainly used in a high-speed rail contact network, especially at a speed greater than 350 km / h, and belongs to the technical field of electric porcelain production and manufacturing. Background technique [0002] With the rapid development of my country's high-speed electrified railways, the vigorous promotion of the "Belt and Road" strategic policy, and the vigorous promotion of my country's high-speed railway equipment to the world, the construction of high-speed railways will usher in a period of rapid growth. By 2020, the mileage of my country's electrified railways will reach 7 More than 10,000 kilometers. As an important device for high-speed railway catenary, rod insulators will be used more and more, and the requirements for their electromechanical performance will also be higher and higher. With the increase of the speed of...

Claims

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Application Information

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IPC IPC(8): H01B19/00
Inventor 邓建国毕少川辜川华
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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