Special oven used for manufacturing cured epoxy resin dry type transformer coil and manufacturing method thereof

Abstract

The invention provides a special oven used for manufacturing cured epoxy resin dry type transformer coil and a manufacturing method thereof. The top part of the special oven is provided with an exhaust air outlet and an air inlet, wherein, the exhaust air outlet is communicated with an inner chamber of the special oven and the side wall of the special oven is internally provided with an air channel; the air inlet is communicated with one end of the air channel; the air channel is internally provided with an electric heater; the middle lower part of the air channel is provided with an opening which is communicated with the inner chamber; bidirectional shutters are arranged on the opening; the bottom part of the special oven is provided with a base plate; the base plate and the bottom part of the special oven together enclose a lower chamber; the lower chamber is communicated with the other end of the air channel; the base plate is provided with an upturned air-out hole which is communicated with the inner chamber; a pouring mould is arranged on the base plate; the bottom part of the pouring mould is provided with a temperature sensor; a cavity is internally provided with a trolley; the pouring mould and the temperature sensor are arranged on the trolley. The invention is characterized by simple and reasonable structure, easy operation, good cure quality and high production efficiency.

Description

technical field [0001] The invention relates to a special oven for manufacturing coils of cured epoxy resin dry-type transformers and a manufacturing method thereof. Background technique [0002] Chinese Patent Document No. CN 1060580C discloses a flame-retardant epoxy resin thousand-type transformer, including an iron core, high and low voltage windings, castables, pull plates, high-voltage upper splints, high-voltage lower splints, lifting rings and pins, high-voltage windings, low-voltage The magnet wire of the winding is fixed in the casting material composed of flame-retardant bisphenol-type shrinkable epoxy resin, flame-retardant phenolic-type shrinkable epoxy resin, curing agent methyl tetrahydrophthalic anhydride and methyl hexahydrophthalic anhydride, and the high voltage The splint and the high-voltage lower splint fix the high and low-voltage windings and the pull plate on the iron core together. The oven of this kind of flame-retardant epoxy resin thousand-type ...

AI Technical Summary

Problems solved by technology

These shrinkage holes will affect the surface quality of the coil if it is light, and it will cause the partial discharge to exceed the standard, which has a great impact on the quality of the coil.

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