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Fixed contact bending moment self-balancing unit for extra-high-voltage isolation switch

A technology for isolating switches and fixed contacts, which is applied in the field of bending moment self-balancing devices for fixed contacts of UHV isolating switches, can solve problems such as breakage, cracks, and large impact force of insulating pillars, and achieve the purpose of preventing breakage, reducing damage, The effect of reducing accidents

Inactive Publication Date: 2009-01-07
王光顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still cannot completely solve the impact of the connecting rod on the insulating support during the closing process, especially at the moment when the isolating switch is closed, the insulating support is subjected to a large impact force in the horizontal direction, which may easily cause the insulating support to break or crack
According to the "Guiding Opinions on Technical Transformation of Power Transmission and Transformation Equipment" issued by the State Grid Corporation of China and published by China Electric Power Press in April 2006, "2002-2004 66KV-00KV disconnectors failed 200 times, of which the porcelain insulators were broken. 56 failures", the operation status shows that the operation reliability of the original old-fashioned high-voltage isolating switch is far from the high reliability requirements of the current power grid, which has a great impact on the safe operation of the power grid

Method used

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  • Fixed contact bending moment self-balancing unit for extra-high-voltage isolation switch
  • Fixed contact bending moment self-balancing unit for extra-high-voltage isolation switch
  • Fixed contact bending moment self-balancing unit for extra-high-voltage isolation switch

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Embodiment Construction

[0018] Such as figure 1 As shown, the UHV disconnector fixed contact bending moment self-balancing device according to the present invention includes a plug-in fixed contact 2 installed on the upper end of the insulating support 1 of the fixed contact of the disconnector. A shock absorbing block 6 is installed on the upper end of the fixed contact insulating pillar 1, and the contact surface between the shock absorbing block 6 and the fixed contact insulating pillar 1 is made of elastic material, such as rubber, so that the shock absorbing block 6 has a certain buffering effect, And prevent the damage to the insulator caused by excessive stress and local force. The upper end of the damping block 6 is fixedly equipped with a connecting rod 7, the connecting rod 7 is covered with a buffer spring 8, the bottom plate 4 has a connecting rod hole, the upper end of the connecting rod 7 is threaded, and is threaded in the connecting rod hole, and is connected with a nut fixed. In th...

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PUM

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Abstract

The related bending-moment self-balance device for fixed contact of an UHV isolator comprises: a plug fixed contact that is arranged on the insulation pole top of the isolation switch and hinged on a supporting board, and a damper hinged to the back end of the former contact; wherein, both of the supporting board and damper are arranged on the bottom board. This product can swing to adapt the inserted angle of the contact and reduce damage to the pole.

Description

technical field [0001] The invention relates to a contact of an extra high voltage isolating switch, in particular to a bending moment self-balancing device for a fixed contact of an extra high voltage isolating switch. Background technique [0002] The isolating switch realizes the on-off of the circuit through the contact of the contacts. Therefore, the requirements for the contacts are as good as possible, the contact surface is as large as possible, and the contact surface is kept as clean as possible. Existing isolating switches for UHV lines can be divided into vertical opening and closing isolating switches and horizontal opening and closing isolating switches. Among them, the vertical disconnection switch is a common equipment used in ultra-high voltage substations. Its working principle is to use a connecting rod installed on each phase line that can rotate 90 degrees vertically to connect the end. The connecting rod is a fixed straight When closing, rotate the con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/02H01H1/36H01H1/46
Inventor 王光顺
Owner 王光顺