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Stain-resistant burst-preventing rigid suspension insulator for urban mass transit metro contact network

A technology for urban rail transit and insulators, applied in the direction of suspension/strain insulators, insulators, electrical components, etc., can solve the problems of difficult glue-mounting vertical, short solid distance, low withstand voltage value, etc., to improve solid thickness and bending resistance The effect of force improvement and mechanical performance improvement

Inactive Publication Date: 2014-10-01
河南省德立泰高压电瓷电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Since the thermal expansion coefficient of the metal accessories is much larger than that of the insulator porcelain body, the metal accessories will generate lateral expansion force after thermal expansion under the working environment of low voltage and high current. This expansion force is the same as that of the ceramic body. The compressive stress cannot be offset, which leads to the bursting of the porcelain body of the "rigid suspension pin insulator". Cause the bolt to produce bending force under the action of tension, because of the influence of bending force, it is easy to cause one side of the porcelain body to burst; 3. The shape design of the product has insufficient creepage distance, low voltage value of anti-corona, heavy salt density The withstand voltage value under pollution is low, the pollution resistance is poor, and it is easy to flashover and breakdown; 4. The solid distance inside the porcelain body of the product is short, and it is very easy to occur when the cement glue at both ends is damp for a long time. Flashover, breakdown phenomenon
[0006] The above-mentioned various design defects lead to low mechanical performance indicators and electrical performance indicators of the product, causing subway trains to fail to run safely on time, and it is difficult to meet the current needs of fast and safe operation of locomotives

Method used

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  • Stain-resistant burst-preventing rigid suspension insulator for urban mass transit metro contact network
  • Stain-resistant burst-preventing rigid suspension insulator for urban mass transit metro contact network
  • Stain-resistant burst-preventing rigid suspension insulator for urban mass transit metro contact network

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Embodiment 1

[0038] See Figure 1 ~ Figure 4 , The pollution-resistant and explosion-proof rigid suspension insulator for the urban rail transit subway contact network of the present invention includes an upper metal accessory 1, a lower metal accessory 2 and an insulator porcelain body 3. The insulator porcelain body 3 is connected to the upper metal accessory 1 and the lower metal accessory 2 The glue assembly is integrated as a whole, the upper part of the insulator porcelain body 3 is a solid cylinder, the lower part of the insulator porcelain body is a hollow recess structure 8, and the middle of the insulator porcelain body 3 is provided with a bell-shaped umbrella skirt 5; The glue mounting surface of the metal accessory 1 matches the upper solid cylinder of the insulator porcelain body 3 to form a hat shape; the glue mounting surface of the lower metal accessory 2 matches the middle hollow cavity of the lower end surface of the insulator porcelain body 3.

Embodiment 2

[0040] The difference between the pollution-resistant and explosion-proof rigid suspension insulator for the urban rail transit subway contact net of this embodiment is that the outer surface of the insulator porcelain body 3 is provided with a bright glaze layer, and the height of the insulator porcelain body The diameter of the bell-shaped umbrella skirt in the middle of the porcelain body of the insulator is 240±20mm.

Embodiment 3

[0042] The difference between the pollution-resistant and explosion-proof rigid suspension insulator for the urban rail transit subway contact net of this embodiment is that the lower umbrella surface of the bell-shaped umbrella skirt extends from the root of the porcelain body to the umbrella The skirt is provided with 2-6 ring-shaped raised umbrella rib structures, and the depth of the umbrella rib groove closest to the root of the porcelain body is shallower than other umbrella rib grooves.

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Abstract

The invention relates to a high-voltage electric porcelain insulator, in particular to a stain-resistant burst-preventing rigid suspension insulator for an urban mass transit metro contact network. The insulator comprises an upper metal accessory, a lower metal accessory and an insulator porcelain body. The upper portion of the insulator porcelain body is a solid cylinder, the middle of the lower portion of the insulator porcelain body is of a hollow pit structure, and a canopy type umbrella skirt is arranged in the middle of the insulator porcelain body. The cementing face of the upper metal accessory is matched with the solid cylinder of the upper portion of the insulator porcelain body and is of a cap shape. The cementing face of the lower metal accessory is matched with a hollow pit in the middle of the lower end face of the insulator porcelain body. According to the stain-resistant burst-preventing rigid suspension insulator, the insulator porcelain body, the upper metal accessory and the lower metal accessory are cemented and combined into a whole through a cement adhesive layer, and the overall stretching resistance and the bend resistant mechanical property of the insulator are improved; meanwhile, the phenomenon that burst of the porcelain body of similar products due to inconsistency of expansion coefficients of the metal accessories and the porcelain body occurs easily can be avoided.

Description

technical field [0001] The invention relates to a high-voltage electric porcelain insulator, in particular to a pollution-resistant and burst-proof rigid suspension insulator for urban rail transit subway catenary. Background technique [0002] With the rapid development of my country's national economy and urban construction, the population of first-tier and second-tier cities in my country is increasing. However, due to the lagging of the existing infrastructure in cities, urban management cannot keep up with development needs and urban traffic. serious problem of congestion. At present, the problem of traffic congestion is common in first-tier and second-tier cities in my country, which brings huge troubles to the work and life of urban residents. Therefore, solving urban traffic congestion and developing BRT has become a top priority for the national economy and the people's livelihood. [0003] Due to the fast and efficient urban light rail subway and its ability to ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/02H01B17/38
Inventor 张耀甫马民韩念龙
Owner 河南省德立泰高压电瓷电器有限公司
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