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High-strength electric long bar-shaped insulator

An insulator, high-strength technology, used in insulators, circuits, electrical components, etc., to achieve stable electromechanical performance, improved strength, stable and reliable strength

Inactive Publication Date: 2018-02-06
JIANGSU SOUTH PORCELAIN INSULATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects and disadvantages of existing ceramic insulators and composite insulators, the purpose of the present invention is to provide a long rod type insulator for high-strength overhead lines

Method used

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  • High-strength electric long bar-shaped insulator

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Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: as figure 1 As shown, the high-strength electric long rod insulator of the present invention: the height of the insulator structure is 1720±35mm, the creepage distance is greater than or equal to 5400mm, the dry arc distance is greater than or equal to 1450mm, the rated tensile failure load is greater than or equal to 760kN, and the lightning full-wave impact resistance Voltage 650kV, 1min power frequency wet withstand voltage 275kV.

[0019] The method for manufacturing the above-mentioned high-strength electric long rod insulator, the method includes the following steps:

[0020] 1) Making hardware accessories: select ZG310-570 with added trace metal elements, and produce rough metal accessories through forging machining process. The surface of the rough metal accessories is anti-corrosion by hot-dip galvanizing process, and the average thickness of galvanizing is greater than 100 microns; The end of the outlet end is designed to be thicker and arc-shap...

Embodiment 2

[0024] Embodiment 2: basically the same as Example 1, the difference is: the composition of the base material: 35 parts of fine industrial alumina material, 3 parts of mica powder, 1 part of silicon powder, 5 parts of kaolin, 1 part of talc; 1 part of limestone ; 1 part of left cloud soil; 1 part of bauxite powder;

[0025] The lead-antimony alloy adhesive is mainly made of the following components in parts by weight: 45 parts of metallic lead and 55 parts of metallic antimony, wherein the melting temperature of the lead-antimony alloy is 650°C.

Embodiment 3

[0026] Embodiment 3: basically the same as Example 1, the difference is: 38 parts of fine industrial alumina material, 7 parts of mica powder, 3 parts of silicon powder, 10 parts of kaolin, 3 parts of talc; 3 parts of limestone; 4 parts of left cloud clay part; 3 parts of bauxite powder;

[0027] The lead-antimony alloy adhesive is mainly made of the following components in parts by weight: 55 parts of metallic lead and 45 parts of metallic antimony, wherein the melting temperature of the lead-antimony alloy is 550°C.

[0028] The performance index of the high-strength electric long rod insulator of the present invention is shown in the following table:

[0029] Performance

[0030] It can be seen that the present invention adopts a specific attachment structure to improve the bonding force between the porcelain body and the attachment; the porcelain body of the insulator is made of high-alumina porcelain to improve its strength; the lead-antimony alloy adhesive pack...

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Abstract

The present invention discloses a high-strength electric long bar-shaped insulator. The structure height of the insulator is 1720 + / - 35 mm, and the creepage distance thereof is greater than or equalto 5400 mm. The dry arc distance of the insulator is greater than or equal to 1450 mm, and the rated tensile failure load of the insulator is greater than or equal to 760 kN. The full-wave lightning impulse withstand voltage of the insulator is 650 kV and the 1 min power-frequency wet withstand voltage of the insulator is 275 kV. According to the invention, the high-strength electric long bar-shaped insulator is good in porcelain electromechanical performance and stable in electromechanical properties. By adopting a lead-antimony alloy cement of a special formula as an adhesive between a porcelain body and a steel cap, the novel non-sand stressed structure and other innovative processes, the electrical performance and the mechanical performance of a product are ensured. A buffer protectionlayer is sprayed and coated on the surface of the porcelain body at a binding part, the damage of a high-temperature alloy to the porcelain body can be effectively prevented. Moreover, the adverse effect of the thermal stress caused by the mismatched condition of the thermal expansion coefficients and the elastic modulus of the metal, the lead-antimony alloy and the porcelain can be mitigated.

Description

technical field [0001] The invention relates to an insulator, in particular to a high-strength electric long rod insulator. Background technique [0002] With the rapid development of the motherland's economy and the continuous improvement of the living standards of the broad masses of the people, the demand for power resources is increasing. However, with the implementation of a series of measures to expand domestic demand and start rural consumption, such as "home appliances going to the countryside", the rural electricity load and electricity consumption have grown rapidly, and the problems of weak rural power grid structure and lagging power construction have begun to emerge. Inner Mongolia, Sichuan, The problem of lack of electricity in western regions such as Yunnan and Xinjiang is still relatively prominent. Under such a background, the country has continuously increased its efforts to transform the power grid. The country's demand for porcelain insulators for overh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/38H01B17/42H01B19/00
CPCH01B17/38H01B17/42H01B19/00
Inventor 徐秀娟杨志峰张志刚王根水刘少华罗杰韩晓春
Owner JIANGSU SOUTH PORCELAIN INSULATOR CO LTD