Low-voltage lead disassembling and assembling platform for 1000kV extra-high voltage transformer

Abstract

The invention belongs to the technical field of transformer substation operation and maintenance, and in particular relates to a low-voltage lead disassembling and assembling platform for a 1000kV extra-high voltage transformer. The working platform comprises two cross rods arranged in parallel, one or more pedals arranged between the two cross rods and used for providing standing space and a plurality of supporting legs fixed to the two cross rods and used for providing vertical supporting force. The problem that the low-voltage lead of the 1000kV extra-high voltage transformer is difficult to disassemble and assemble is solved, the personal and equipment safety is ensured, and meanwhile, the operation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of substation operation and maintenance, in particular to a platform for disassembling and assembling low-voltage leads of 1000kV ultra-high voltage transformers. Background technique [0002] The 1000kV UHV transformer is the core equipment in the UHV substation. During the annual inspection of all substation equipment, the task of transformer maintenance is particularly important. Due to the high voltage level of the transformer, many difficulties will be encountered in on-site work, and the typical work content is the disassembly and assembly of low-voltage leads. [0003] The 1000kV transformer has high requirements on the insulation level of the material. Its low-voltage bushing is much higher than that of the 500kV transformer. The part of the porcelain bottle above the rising seat alone reaches 1.9 meters. In the disassembly and assembly of low-voltage lead wires in recent years, it is difficult for ...

AI Technical Summary

Problems solved by technology

According to the requirements of safety regulations, in order to avoid breaking the porcelain bottle, maintenance personnel are not allowed to directly climb the porcelain bottle; on the other hand, the capillary pipeline on the top of the transformer body is complicated, and there is not enough space to erect ladders or scaffolding

The above reasons make the on-site operation more difficult, not only cannot guarantee the safety of personnel and equipment, but also makes the disassembly and assembly of lead wires time-consuming and laborious, which affects the progress of the next work.

[0004] The existing lead wire removal method is relatively primitive, and insulation ladders, sleepers and other climbing or raising tools are often used to achieve the working height. On the porcelain bottle, use a sleeper horizontally to ride on these two vertical sleepers, and finally tie it up with a rope and fix it, and the maintenance personnel stand on the horizontal sleepers to perform operations; this type of method has the following shortcomings: first of all, personnel safety, In high-altitude operations, the safety of personnel cannot be guaranteed; the second is equipment safety. During the transportation of insulation ladders and sleepers to the transformer body, various pipelines may be touched. At the same time, during the process of fixing and climbing Both may damage the porcelain bottle and affect its insulation performance; the last is the work efficiency. When disassembling the lead wire, due to the heavy lead wire, two people are required to cooperate. The narrow position is not conducive to disassembly and assembly. The operation process is slow, time-consuming and laborious.

[0005] For example, the patent document whose publication number is CN102510013A discloses a box-type transformer maintenance platform, a supporting platform detachably connected to the transformer casing, and the patent document whose publication number is CN205081383U discloses a transformer high-altitude operation platform, the above two Although a standing platform is designed for the structure, the structure of the UHV transformer and the location of the low-voltage lead wires are very different from those of conventional transformers, and they cannot be used in a matching manner.

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