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High-strength material for preparing rod-shaped porcelain insulator of high-speed electrified railway contact net

A technology for electrified railways and porcelain insulators is applied in the field of high-strength materials, which can solve the problems of inability to effectively control the load-bearing of electrified catenary wires of railway lines, heavy weight, etc., and achieve the effects of increasing the content of aluminum, and being convenient to install and use.

Inactive Publication Date: 2012-04-11
JIANGSU SOUTH PORCELAIN INSULATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, as long as the size of the rod-shaped porcelain insulator is thickened, the mechanical strength of the product can be improved. However, since the strength of the existing high-alumina porcelain formula has reached the limit value, and the Al 2 o 3 The content is low, so in order to improve the mechanical strength of the product, we can only increase the size of the rod-shaped porcelain insulator, but we cannot blindly increase the size of the product in order to improve the mechanical strength of the insulator, otherwise the rod-shaped porcelain insulator is made too large. The weight will be very heavy, which will bring a series of troubles to production, installation and use, and the load bearing on the electrified catenary conductor of the railway line will not be effectively controlled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A high-strength material for making high-speed electrified railway catenary rod-shaped porcelain insulators, including the following components by weight percentage: bauxite powder 27%, industrial alumina 10%, Qingcaoling clay 27%, Zuoyun clay 10%, feldspar 7%, Zhangcun clay 15%, Ninghai clay 4%;

[0015] Among them, the bauxite powder has an alumina content of more than 84% and a true density of 3.5g / cm 3 Above, the fineness is above 250 mesh; the alumina content of industrial alumina is above 98%, and the true density is 3.9g / cm 3 above, fineness above 120 mesh; the alumina content of Zuoyun clay is above 22%, the bonding force is above 1.5Mpa, and the plasticity index is above 18; the alumina content of Zhangcun clay is above 32%, potassium oxide is 7-12%; Ninghai clay The aluminum oxide content is more than 20%, the binding force is more than 2.0Mpa, and the plasticity index is more than 28.

[0016] Design principle: improve Al in raw materials 2 o...

Embodiment 2

[0021] Embodiment 2: basically the same as Embodiment 1, the difference is the components of high-strength materials: bauxite powder 28%, industrial alumina 8%, Qingcaoling clay 25%, Zuoyun clay 11%, feldspar 9% , Zhangcun clay 18%, Ninghai clay 4%.

Embodiment 3

[0022] Embodiment 3: basically the same as Embodiment 1, the difference is the components of high-strength materials: bauxite powder 28%, industrial alumina 12%, Qingcaoling clay 25%, Zuoyun clay 13%, feldspar 6% , Zhangcun clay 13%, Ninghai clay 3%.

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Abstract

The invention discloses a high-strength material for preparing a rod-shaped porcelain insulator of a high-speed electrified railway contact net. The high-strength material comprises the following components in percentage by weight: 25-28% of bauxite powder, 8-12% of industrial aluminum oxide, 25-28% of Qingcaoling clay, 9-13% of Zuoyun clay, 6-9% of feldspar, 13-18% of Zhangcun clay and 3-4% of Ninghai clay. The high-strength material has the advantages that: the use amount of bauxite in common high-aluminum porcelain formula is reduced, and industrial aluminum oxide is used for replacing partial bauxite, thus the content of aluminum in the raw materials is improved, the size of the rod-shaped porcelain insulator is not needed to be increased, and ultrahigh-strength rod-shaped porcelain insulator is realized, thereby bringing great convenience for production, installation and use.

Description

technical field [0001] The invention relates to a raw material for producing insulators, in particular to a high-strength material for making rod-shaped porcelain insulators for contact nets of high-speed electrified railways. Background technique [0002] With the increase of the speed of the high-speed railway, in order to ensure the reliable operation of the electric locomotive, the tension of the contact line is increased. When the tension of the contact line increases, the rod-shaped porcelain insulator supporting the wire must have high mechanical strength to meet the requirements. The bending strength of the rod-shaped porcelain insulator on the railway line with a running speed of 250 km / h and above must reach 16KN above. [0003] As we all know, as long as the size of the rod-shaped porcelain insulator is thickened, the mechanical strength of the product can be improved. However, since the strength of the existing high-alumina porcelain formula has reached the limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/26
Inventor 刘少华杨育标
Owner JIANGSU SOUTH PORCELAIN INSULATOR CO LTD