Method for dismounting transformer

Abstract

The invention discloses a method for dismounting a transformer and belongs to the technical field of large power transformers. The method for dismounting the transformer specifically comprises the steps: performing oil drainage of an old main transformer; dismounting three side leads, all of accessories and secondary lines; checking a gas relay and an instrument of a novel main transformer; disassembling an old main transformer body and installing a novel main transformer body; installing a novel main transformer radiator, an oil return pipeline and a rubber mat; performing nitrogen explosion of the novel main transformer body; installing a novel main transformer captive test (CT) ascending base, a fan and a thermometer; installing a novel main transformer oil conservator; installing a novel main transformer on-load voltage regulation switch; performing oil return of the novel main transformer body, manufacturing the three side leads and connecting the secondary lines; installing a gas relay of the novel main transformer, performing oil filling of the novel main transformer oil conservator and adjusting oil level; performing oil filling of the on-load voltage regulation switch; checking up the connecting condition of the secondary lines and performing a transmission test; performing cleaning and paint spraying; and connecting the three side leads of the novel main transformer to finish installation of the novel main transformer. By means of the method, working steps of some complicated processes can be omitted, the working time can be saved, and the work efficiency can be improved.

Description

technical field [0001] The invention relates to a method for disassembling and assembling a transformer, which is suitable for disassembling and assembling a large-scale power transformer. Background technique [0002] The installation of large-scale power transformers has the characteristics of heavy workload, long working hours, and a wide range of specialties. At the same time, it has the characteristics of close integration of work links and many factors affecting construction. Each transformer has at least 20 sets of radiators, which are large in size and large in number. In the main transformer overhaul project, the disassembly and installation of radiators is a tedious and long-term work. Usually, the dismantling steps of the radiator are as follows: 1. Dismantle the body: lift the radiator vertically with a single sling and move it away from the main transformer body; 2. Tilt it down: move the radiator to the vicinity of the stacking place, Tilt it down on the groun...

AI Technical Summary

Problems solved by technology

However, each lifting seat on the high and medium voltage side needs to be repeatedly adjusted in this way to complete the hoisting work. This repeated adjustment process is a waste of time and low work efficiency.