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High voltage bushing on-line monitoring ground wire lead-out structure

A high-voltage bushing and lead-out structure technology, applied in the field of nuclear power, can solve the problem of inability to install bushing grounding current measuring elements, etc., and achieve the effects of ensuring electrical connection and sealing performance, good electrical connection and sealing performance, and convenient use.

Inactive Publication Date: 2012-02-08
GUANGDONG NUCLEAR POWER JOINT VENTURE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a high-voltage bushing on-line monitoring grounding wire lead-out structure, aiming to solve the problem that the bushing grounding current measuring element cannot be installed when the grounding wire at the end screen of the bushing is led out

Method used

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  • High voltage bushing on-line monitoring ground wire lead-out structure
  • High voltage bushing on-line monitoring ground wire lead-out structure
  • High voltage bushing on-line monitoring ground wire lead-out structure

Examples

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Embodiment 1

[0031] See figure 1 , the existing high-voltage bushing end screen structure of the main transformer includes a high-voltage bushing 2 and a terminal 5, the terminal 5 can be a cylindrical or flat pin-shaped structure, the lower end is fixed on the bushing 2, and the upper end passes through the high-voltage bushing 2 The center hole protrudes outward, and there is a copper column 3 with a tapered end on the upper end. A spring 4 is arranged under the copper column 3, which is placed on the lower end of the terminal 5. A cap 1 is screwed on the sleeve 7. Through the cap 1 The cover can isolate the terminal 5 from the outside world.

[0032] see figure 2 According to the above-mentioned existing final screen structure, an outer casing 11 is designed to replace the above-mentioned cap 1. The outer casing 11 contains a hollow cavity, and the hollow cavity structure can be gradually reduced in diameter from bottom to top. Small stepped inner cylindrical structure (the cavity in...

Embodiment 2

[0039] See image 3 , another existing main transformer high-voltage bushing end screen structure includes a high-voltage bushing 2' and a terminal 5'. The terminal 5' can be a cylindrical or flat pin-shaped structure, and the lower end is fixed on the high-voltage bushing 2 ', the terminal 5' can be isolated from the outside world through the cover of the cap 1'.

[0040] see Figure 4 According to the above-mentioned existing final screen structure, the second embodiment of the present invention designs a jacket 21 to replace the above-mentioned cap 1'. The diameter size should match the size of the inner hole of the high-voltage bushing 2', and its outer surface is processed with external threads, which can be spirally connected with the high-voltage bushing 2'; in the hollow cavity of the jacket 21, a conductive rod 22 is also arranged, placed in the jacket In the upper part of the cavity in 21, one end (bottom) of the conductive rod 22 is provided with a central hole, a...

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Abstract

The invention provides a high-voltage bushing on-line monitoring grounding wire lead-out structure, which includes a high-voltage bushing and a connection terminal, and is characterized in that it also includes a jacket whose bottom end is connected to the high-voltage bushing, and the jacket contains a hollow Cavity, in the hollow cavity of the jacket, a conductive rod is arranged, one end of the conductive rod is connected to the terminal, the other end extends outside the jacket, and is connected to the wiring element, and an insulating lining is provided between the jacket and the conductive rod piece. In the present invention, by replacing the original cap with a newly designed jacket and matching it with other isolation and insulation parts, it can be directly installed on the existing high-voltage bushing end screen structure without changing other related structures, which is reliable The on-line insulation monitoring of the high-voltage bushing is realized, the cost of processing, manufacturing and installation can be saved, the use is very convenient, and good electrical connection and sealing performance can be guaranteed.

Description

technical field [0001] The invention belongs to electric equipment in the technical field of nuclear power, and in particular relates to a design of a lead-out structure of a ground wire lead-out terminal of a test terminal of a high-voltage bushing of a main transformer. Background technique [0002] The high voltage bushing of the main transformer is the main component of the power equipment in the nuclear power field. Due to some problems in manufacturing and operation, the fault of the high voltage bushing of the main transformer has become one of the common faults of the main transformer, and the fault of the high voltage bushing has certain Gradual and sudden. [0003] In order to detect the defects of high-voltage bushings in time during the operation of the main transformer and avoid the occurrence of bursting accidents of high-voltage bushings, it is necessary to add a set of online insulation monitoring devices for high-voltage bushings to continuously monitor them...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/58H01R4/64
Inventor 李江
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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