Dry-type transformer with iron core cooling device

Abstract

The invention discloses a dry-type transformer with an iron core cooling device. The dry-type transformer comprises an iron core (6), a coil (4) and an iron core clamping piece (3); the dry-type transformer further comprises a plurality of cooling pipes (5) uniformly distributed on the outer wall of the iron core (6); the cross section of each cooling pipe (5) is of an arc-shaped structure; the upper parts of the plurality of cooling pipes (5) are connected in parallel and then are communicated with an air pump (1) arranged on the iron core clamping piece (3); the lower portions of the coolingpipes (5) are led out from the bottom of an iron core (6); an iron core temperature sensing module (2) is arranged on the iron core (6); the output end of the iron core temperature sensing module (2)is electrically connected with a central processing module; and the central processing module is electrically connected with a starting device of the air pump (1). According to the dry-type transformer with the iron core cooling device, a heat dissipation device is additionally arranged on the outer surface of the iron core of the transformer, so that the temperature of the iron core is reduced,the insulation performance of adjacent insulation pieces is guaranteed, the safe and reliable operation of the transformer is guaranteed, and the service life of the transformer is prolonged.

Description

technical field [0001] The invention belongs to the technical field of power transformers, in particular to a dry-type transformer with an iron core cooling device. Background technique [0002] Dry-type transformers are widely used in hospitals, residential areas, high-rise buildings, airports, docks, and various mechanical equipment. Dry-type transformers refer to transformers in which the iron core, high and low voltage windings, and high and low voltage leads are not immersed in insulating oil. . [0003] Epoxy casting dry-type variable distribution transformers can meet the requirements of energy-saving and material-saving distribution systems in terms of structure and performance. Compared with the currently available transformers, the new changes in operation and procedures of cast epoxy dry-type variable distribution transformers have also been recognized by more and more users. Since the body of the open-type dry-type transformer is a power transformer that is not...

AI Technical Summary

Problems solved by technology

Since the body of the open-type dry-type transformer is a power transformer that is not placed in an insulating cooling medium, the heat generated by the iron core, coil, etc. of the transformer is completely exchanged by the natural circulation of the air during operation, and the iron core is located in the The innermost layer of the transformer, which only relies on the natural circulation of air for heat exchange, often makes the temperature rise of the iron core very high, resulting in the aging of the adjacent insulating parts, which seriously affects the safe operation of the transformer

Images