Dry-type transformer

Abstract

The present invention discloses a dry-type transformer which comprises a machine body and a movable base, and a plurality of sets of thermal resistance sensors are evenly installed on the surface of the bottom end in the machine body. By adopting the core column, the silica gel rod and the high-magnetic-conductivity silicon steel sheet, in the using process, the grain orientation high-magnetic-conductivity silicon steel sheet with the small magnetostriction amount can effectively reduce noise of the transformer, the core column of the device is designed to be short and thick, and the core column adopts a single-piece, seven-stepping and longitudinal step iron stacking mode; magnetic flux density distribution at joints of silicon steel sheets at corners of the iron core can be obviously improved, a locking fastener and a steel pulling plate structure are structurally adopted, zero vibration in windings and structural parts is guaranteed, noise can be effectively reduced, a silica gel rod is arranged between a core column and a coil, namely, noise reduction and buffering are added between the iron core and the coil, and the structure is simple. A plurality of devices are matched withone another, so that the noise of the device is reduced to the maximum extent, and the dry-type transformer has the advantage of good noise reduction effect.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a dry-type transformer. Background technique [0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, wharf CNC mechanical equipment and other places. Simply put, dry-type transformers refer to transformers whose iron core and windings are not immersed in insulating oil. The cooling methods are divided into natural air cooling and Forced air cooling, when natural air cooling, the transformer can run continuously at the rated capacity for a long time, when forced air cooling, the output capacity of the transformer can be increased by 50%, suitable for intermittent overload operation, or emergency accident overload operation; due to overload The load loss and impedance voltage increase greatly, and it is in a non-economic operation state, so it should not be operated continuously for a long time. [0003] In the actual use proce...

AI Technical Summary

Problems solved by technology

[0003] In the actual use process, the existing dry-type transformer will generate huge noise during use, and the existing dry-type transformer is not convenient to move, the heat dissipation effect is poor, and the rainwater cannot be blocked. It will cause water to enter the device, which will easily cause damage to the device for a long time, and the protection effect is not good, which has certain limitations in the actual use process

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