Cooling and noise reduction type dry-type transformer

Abstract

The invention discloses a cooling and noise reduction type dry-type transformer comprising a shell, a plurality of air outlet holes are formed in the side wall of the shell, a strip-shaped cavity is formed in the side wall of the shell, the strip-shaped cavity penetrates through the air outlet holes, a sliding plate is connected to the inner wall of the strip-shaped cavity in a sealed and sliding mode, and a plurality of through holes matched with the air outlet holes are formed in the side wall of the sliding plate. The lower end of the sliding plate is elastically connected with the inner bottom of the strip-shaped cavity through a spring, a cavity is formed in the upper end of the shell, a tuning fork is fixedly connected to the inner wall of the cavity, the side wall of the tuning fork is fixedly sleeved with a plurality of permanent magnet blocks, and a spiral coil is embedded in the inner wall of the cavity. The tuning fork resonates due to noise generated by the dry-type transformer, the tuning fork drives the permanent magnet block to move, the spiral coil moves relative to the permanent magnet block and cuts the magnetic induction line, the induced current is generated on the spiral coil, sound energy in the noise is effectively converted into electric energy, and propagation of the noise is reduced.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a temperature-reducing and noise-reducing 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. [0003] Dry-type transformers will produce a certain amount of noise when they work, but the size of the noise is related to the use and adjustment of dry-type transformers. Dry-type transformers are less noisy during normal use, and at this time they are cooled by natural air convection, that is, in There are many ventilation holes on the side wall of the transformer. When the dry-type transformer is used under high load, the noise is relatively large. If the dry-type transformer is installed indoors, it will greatly affect the...

AI Technical Summary

Problems solved by technology

[0003] Dry-type transformers will produce a certain amount of noise when they work, but the size of the noise is related to the use and adjustment of dry-type transformers. Dry-type transformers are less noisy during normal use, and at this time they are cooled by natural air convection, that is, in There are many ventilation holes on the side wall of the transformer. When the dry-type transformer is used under high load, the noise is relatively large. If the dry-type transformer is installed indoors, it will greatly affect the comfort of the indoor environment, and at this time it is cooled by forced air. Even more, the transformer is in overload operation, the load loss and impedance voltage increase greatly, and the energy consumption is large

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