Dry-type transformer with overload alarm system

Abstract

The invention relates to the technical field of dry-type transformers, and particularly relates to a dry-type transformer with an overload alarm system. The transformer comprises a cabinet body, a placement groove is formed in the inner surface of the cabinet body, a sealing door is hinged to the outer surface of the front end of the cabinet body, and a transformer main body is fixedly connected to the bottom end of the inner surface of the placement groove through bolts. Heat dissipation mechanisms are arranged on the outer surfaces of the left side and the right side of the cabinet body, clamping mechanisms are arranged on the outer surfaces of the lower ends of the heat dissipation mechanisms, and a warning mechanism is arranged on the outer surface of the upper end of the cabinet body; and each heat dissipation mechanism comprises an air inlet, an air transmission cavity, a sand filtering net, a through hole, a rotating rod, blades and a cleaning brush, the air inlet is formed in the outer surface of the left side of the cabinet body, and the air transmission cavity is formed in the outer surface of the right side of the air inlet. According to the device, the heat dissipation efficiency of the sealed cabinet body can be improved, and meanwhile, the probability that grit enters the cabinet body to damage the transformer main body can be reduced; furthermore, the blockage probability of the sand filtering net can be reduced, the air velocity is increased, and the service life of the device is prolonged.

Description

technical field [0001] The invention relates to the technical field of dry-type transformers, in particular to a dry-type transformer with an overload alarm system. 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] The existing patent (notification number: CN108109812B) is a low-loss dry-type transformer, including a core, a coil, a clip, a pad, a pressure nail, and a base. The coil includes a low-voltage coil and a high-voltage coil. The iron yoke, the upper clamp, the lower clamp, the side screw, and the pull plate are composed of the upper iron yoke connected to the upper clamp and the upper pad in turn, and the lower iron yoke to be connected to the lower clamp and the lower pad in turn, and the side screws pass through respecti...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing dry-type transformer box mainly relies on fans for forced air cooling. In order to maintain air circulation, it is necessary to open air inlet holes on the cabinet body. The external sand and gravel can easily enter the cabinet through the air inlet holes, which will affect the electronic components in the cabinet. At the same time, the western region of my country is rich in power resources and has a lot of surplus, but the content of wind and sand in the western region is relatively high, and a large amount of sand and gravel can easily block the dust-proof net, so that the external cold air cannot enter the inside of the transformer cabinet, and the transformer will be damaged due to excessive temperature. High and damaged, so that the entire equipment stops working, thereby reducing the service life of the dry-type transformer;

[0006] 2. When it is raining in the western region, the traditional cabinet cannot use rainwater to dissipate heat from the main body of the transformer inside the cabinet, and the fan is used to force air cooling, which wastes a lot of power resources. At the same time, when the main body of the transformer is damaged and the temperature is too high, It is unable to warn passers-by in time, which increases the safety hazard of the device, and at the same time, it is not convenient for maintenance personnel to find the damaged transformer body, which reduces the speed of maintenance personnel's rush repair, affects the power supply demand, and reduces the use efficiency of the device

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