Transformer for induction hardening

Abstract

The invention provides a transformer for induction hardening. A casing of the transformer is a cylindrical copper casing, a circular primary coil is arranged in the casing, both ends of the casing are respectively connected with a first copper cover plate and a second copper cover plate, the first copper cover plate is provided with a water joint, the first copper cover plate and the second copper cover plate are connected together by a center mandrel, the center mandrel is connected with the second copper cover plate in an insulation way, the second copper cover plate and the center mandrel are respectively and conductively connected with two input electrodes, the casing, the first copper cover plate, the center mandrel, the second copper cover plate and the two input electrodes form a secondary coil together, the primary coil is insulated from the secondary coil, the water joint is also used as a cable input end of the primary coil, and an integral cavity of the casing is a cooling chamber. The transformer has the advantages that the primary coil and the secondary coil are arranged in a circular surrounding way, the integral transformer is cooled by feeding water to the interior of the transformer, the size of the transformer is small, the required installation space is small, the cooling effect is good, impurities accumulated in the transformer can be easily cleaned, and the service life is long.

Description

technical field [0001] The invention relates to a matching device for induction hardening, in particular to a transformer for induction hardening, which is especially suitable for quenching equipment requiring small installation space, light weight transformer and large capacity. Background technique [0002] At present, the shape and structure of quenching transformers used in induction hardening equipment are mostly square. Large-capacity quenching transformers are often bulky and heavy, requiring a large installation space and certain rigid supports to meet the installation of quenching transformers. Most of the primary and secondary coils of the transformer are made of copper tubes wound into a ring with multiple turns. When cooling the primary and secondary coils of the transformer, water is often used inside the copper tube. Due to the small cross-sectional area of ​​the inner cavity of the copper tube, the water flow cannot meet the cooling capacity of the quenching ...

AI Technical Summary

Problems solved by technology

Due to the small cross-sectional area of ​​the inner cavity of the copper tube, the water flow cannot meet the cooling capacity of the quenching transformer at work, and the transformer will burn out due to the lack of cooling capacity when the transformer works for a long time; Impurities accumulate and block the copper tube. Since the coil of the copper tube is ring-shaped, the internal impurities cannot be cleaned, the cooling capacity cannot meet the requirements, and the transformer is burned out.

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