Method for repairing core of rack transformer

A transformer, bench type technology, applied in switchgear, electrical components, cranes, etc., can solve the problems of high labor cost, long maintenance time, long working time, etc.

Inactive Publication Date: 2015-11-25
WUZHI ELECTRIC POWER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the practical application of transformers, due to various reasons, the probability of failure of distribution transformers increases and the reliability of operation decreases. In order to ensure the safe and stable operation of transformers, it must be repaired by lifting cores, and according to the maintenance guidelines for power transformers: Generally, transformers should be inspected for hanging cores every 5-10 years. At present, three methods are generally used for the maintenance of transformer hanging cores: crane, manual lifting or returning to the factory. The coefficient is low; the disadvantages of the manual lifting method are: due to the narrow space of the bench-type transformer, the working hours are long, the labor cost is high, and the efficiency is low; the defects of the return method are: the maintenance time is long and the maintenance cost is too high

Method used

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  • Method for repairing core of rack transformer
  • Method for repairing core of rack transformer
  • Method for repairing core of rack transformer

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Embodiment Construction

[0022] The specific embodiment of the present invention is:

[0023] (1) Special equipment for installing and maintaining the hanging core on the channel steel at the bottom of the bench-type transformer; the special equipment is a door-shaped bracket hanging core tool, including a bracket, a chain hoist 7, and a lifting piece 9. The bracket includes a The base plate 2 connected with the transformer channel steel, the fixing element 1, the column 3, and the beam 5; the base plate 2 is 700 mm long and 100 mm wide, fixed on the lower end of the column 3, and is provided with a long hole suitable for the transformer channel steel, There are two long holes, 100mm in length and 20mm in width, which are used to adjust and adapt to different types of transformers; the fixing element 1 is a hook-shaped element with a diameter of 16mm at one end and a width of 85mm. 190mm, the length of the short side of the hook is 110mm, the hook is used to hang the channel steel on the transformer, ...

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PUM

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Abstract

The invention discloses a method for repairing the core of a rack transformer and belongs to the field of power maintenance. The method is characterized by comprising: (1) installing a gate-shaped support core hoisting tool on the channel steel on the bottom of the rack transformer for repairing the core; (2) fixing the core of the rack transformer by using the gate-shaped support core hoisting tool in the step (1); (3) hoisting the core of the rack transformer by using the gate-shaped support core hoisting tool in the step (1); (4) placing the hoisted rack transformer at an appropriate position; (5) enabling a worker to check and repair the core of the rack transformer; (6) hoisting the repaired core of the rack transformer over the rack transformer by using the gate-shaped support core hoisting tool, and installing repaired core of the rack transformer; and (7) detaching the gate-shaped support core hoisting tool to complete the maintenance. The method improves overhaul efficiency of the core of the rack transformer, decreases labor intensity, and reduces an operation safety risk and repairing cost.

Description

technical field [0001] The invention belongs to the field of electric power transmission equipment, and in particular relates to a maintenance method for a suspension core of a bench-type transformer. Background technique [0002] In the practical application of transformers, due to various reasons, the probability of failure of distribution transformers increases and the reliability of operation decreases. In order to ensure the safe and stable operation of transformers, it must be repaired by lifting cores, and according to the maintenance guidelines for power transformers: Generally, transformers should be inspected for hanging cores every 5-10 years. At present, three methods are generally used for the maintenance of transformer hanging cores: crane, manual lifting or returning to the factory. The coefficient is low; the disadvantages of the manual lifting method are: due to the small space of the bench-type transformer, the working hours are long, the labor cost is high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B3/00B66C25/00
Inventor 安利原小明李孝峰栗小敏邹二平
Owner WUZHI ELECTRIC POWER CORP
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