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A kind of high-voltage isolating switch with touch finger function and its preparation method

A high-voltage isolating switch and contact finger technology, applied in electrical switches, air switch parts, contact meshing and other directions, can solve the problems of difficult heat dissipation, poor product quality, fatigue failure of parts, etc., to achieve high short-circuit current capacity, reduce The number of maintenance and the effect of improving the anti-corrosion performance

Inactive Publication Date: 2011-12-14
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the self-supporting fingers used in our country imitate similar foreign products. The simulation calculation ability in the design is insufficient, the production technology is backward, and the product quality is poor. Failure, resulting in the reduction of the pressing force between the contact finger and the contact, the increase of the contact resistance, severe heat generation, and difficulty in heat dissipation, which bury hidden dangers for the safe operation of the high-voltage isolating switch

Method used

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  • A kind of high-voltage isolating switch with touch finger function and its preparation method
  • A kind of high-voltage isolating switch with touch finger function and its preparation method
  • A kind of high-voltage isolating switch with touch finger function and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The CuCr alloy ingot purchased in the market is sawed and blanked, and then the billet is heated to 850°C in a box-type resistance furnace; the ingot is forged into a billet with a cross-section of 20×7mm; the billet is subjected to solution treatment at a temperature of 980°C ; Then carry out initial rolling, and roll the billet into a strip with a thickness of 3.5 mm; after the initial rolling, carry out aging treatment on the strip, the aging temperature is 450 ° C, the aging time is 6 hours, and the sample after aging is air-cooled; the strip is finished rolled Form a thin strip with a thickness of 3.0mm; saw the thin strip into a blank with a length of 180mm, and prepare a self-supporting contact finger part after composite forming by bending and pressing ribs and composite forming by bending and punching; the contact finger part is suitable for 10kV~500kV High voltage isolating switchgear.

Embodiment 2

[0058] The CuCr alloy ingot purchased in the market is sawed and cut, and then the billet is heated to 850°C in a box-type resistance furnace; the ingot is hot-rolled into a billet with a cross-section of 20×7mm; the billet is solidified at a temperature of 980°C treatment; then preliminary rolling is carried out, and the billet is rolled into a strip with a thickness of 3.5mm; after preliminary rolling, the strip is subjected to aging treatment, the aging temperature is 450°C, the aging time is 6h, and the sample after aging is air-cooled; the strip is subjected to A thin strip with a thickness of 3.0mm is prepared by drawing; the thin strip is cut into a blank with a length of 180mm by using a shearing die, and after composite forming by bending and embossing and composite forming by bending and punching, a self-supporting finger part is prepared; the new The finger parts are suitable for 10kV~500kV high voltage isolating switchgear.

Embodiment 3

[0060] The composite forming of bending and embossed ribs according to the present invention adopts a special forming mold, including a lower die base b5, a screw 6, a die backing plate 7, a die 8, a guide post or a guide sleeve 9, an upper die base a10, a screw c11, a screw d12, mold handle 13, punch backing plate 14, punch fixing plate 15 and punch 16.

[0061] A die backing plate 7 is arranged between the upper die base c10 and the lower die base d5, and a punch 16 is arranged on the die base 7, and the punch 16 is connected with the upper die base a10 through a punch fixing plate 15.

[0062] The bending and punching composite forming of the present invention adopts a special forming mold, including a lower die base d17, a lower backing plate 18, a die backing plate 19, a punching punch fixing plate 20, a bending die 21, a die plate 22, and a guide post Or guide sleeve 23, punch 24, upper backing plate 25, upper die base c26, screw

[0063] e27, mold handle 28, punching r...

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Abstract

The invention discloses a high-voltage isolation switch with a contact finger function. The high-voltage isolation switch comprises a fastening part, a main body part and a guide-in part and is characterized in that the guide-in part comprises a contact finger seat, contact fingers and a contact, wherein the contact seat is connected with the contact fingers through screws, the guide-in part is of a section of circular arc structure, the upper and the lower contact fingers are in clearance fit with the contact and are not closed with the contact; the surface of the fastening part, matched with the contact finger seat, is a flat surface, and the fastening part and the contact finger seat are fixed with a welding method; and the cross section of the main body part is of a W shape, and a heat radiating groove for radiating heat for the contact fingers is arranged on the cross section of the W-shaped cross section. The self-supported contact fingers in the invention have high through-current capability and high short-circuit current bearing capacity; and a self-cleaning capability is realized between the contact and the contact fingers, so that the maintenance frequency is decreased, the anti-corrosion property of the contact fingers is increased, the heating of a conductive loop is alleviated and the heat radiating capability is enhanced and the high-voltage isolation switch has the characteristics of low cost, safety and reliability.

Description

[0001] technical field [0002] The invention relates to a high-voltage isolating switch, in particular to a structure and a forming method of a self-supporting contact finger of a high-voltage isolating switch. Background technique [0003] The contact finger part is the core component of the high-voltage isolating switchgear, and its performance determines the stability and safety of the high-voltage power grid. The contact finger of the traditional high-voltage isolating switch is tightly connected with the contact by providing the pressing force through the spring; the self-acting contact finger provides the pressing force through the deformation force generated by its own deformation. Compared with the traditional contact finger structure, the self-acting contact finger has a simple structure , strong flow capacity, simple operation and so on. At present, most of the self-supporting fingers used in our country imitate similar foreign products. The simulation calculatio...

Claims

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Application Information

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IPC IPC(8): H01H31/02H01H1/36H01H1/62H01H11/04
Inventor 张彦敏宋克兴郜建新刘亚民赵培峰刘卫锋张莉闫焉服周伯楚国秀花
Owner HENAN UNIV OF SCI & TECH
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