Production technology of oil-immersed transformer

Abstract

The invention discloses a production technology of an oil-immersed transformer. The production technology is characterized by comprising the following steps: (1) processing an iron core and an iron core clamping insulator, wherein the iron core clamping insulator is prepared from an insulating material with low water absorption; (2) winding a low-voltage coil; (3) winding a high-voltage coil outside a wound low-voltage coil assembly; (4) reshaping to form a coil with a required shape and carrying out drying treatment; (5) carrying out device body total assembling; (6) putting an assembled device body into a manufactured oil tank; (7) putting the oil tank provided with the device body into a vacuum oil injection tank for carrying out vacuum oil injection, wherein the vacuum degree during oil injection is smaller than 1000 Pa, the oil temperature is higher than 50 DEG C, and the time from the coil coming out of a baking oven to vacuum oil injection is smaller than 6 hours; (8) carrying out pressurization standing on the transformer after oil injection; and (9) testing the transformer after pressurization standing. Under the premise of acquiring the oil-immersed transformer with equivalent electric performance, the production time can be reduced, the production efficiency is improved, the energy consumption is reduced, and the cost is reduced, so that the product has preferable market competitiveness.

Description

Technical field [0001] The invention relates to a production process of a transformer, in particular to a production process of an oil-immersed transformer. Background technique [0002] Distribution transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It can be divided into oil-immersed transformers and dry-type transformers according to the insulation and cooling classification. The existing production process of oil-immersed transformers is as follows: 1 , Use magnet wire or copper foil to wind the low voltage coil according to the technical requirements, and wind the required high voltage coil outside the low voltage coil; 2. Then carry out shaping and drying on the wound high and low voltage coil; 3. Then dry Assemble the good high and low voltage coils with the manufactured iron core; 4. Dry the assembled body; 5. Assemble the dried body, and then put it into the finished fuel tan...

AI Technical Summary

Problems solved by technology

Although the required oil-immersed transformer can be obtained by using the above-mentioned process, since the body drying operation in the fourth step is required, this process is generally carried out in the drying room. The drying room takes 1-2 hours respectively, and the drying process after entering the drying room takes about 18 hours, so only the body drying process takes a whole day, and the energy consumption is 1 / 3 of the entire production process, so the device The body drying process will greatly affect the production efficiency, and has the characteristics of high production cost

Furthermore, the semi-finished products in each process are currently flown by hoisting in the workshop. During the hoisting process, corresponding operators need to be assigned to assist, so a lot of labor is required. Cross-waiting affects the production schedule

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