Oil congelation prevention type transformer oil tank for extremely cold region

Abstract

The invention discloses an oil congelation prevention type transformer oil tank for an extremely cold region, and belongs to the field of transformer oil tanks. The oil congelation prevention type transformer oil tank can realize the effects that when the temperature of insulating oil is relatively low, a plurality of deformed flow stirring needle bags immersed in the oil are expanded and contracted to different extents through the back-and-forth movement process of a concentric-square-shaped sealing plate, and do rotation distortion motion in the expansion and contraction processes at the same time, so that insulating oil keeps fluidity all the time, kinetic energy of the insulating oil and heat energy generated by friction with a box body, a semi-open clip-shaped frame and the deformation flow stirring needle bags in the oil flowing process are increased, the situation that the insulating oil is frozen at low temperature is effectively reduced, and normal starting and operation of atransformer are guaranteed. Besides, when the temperature of the insulating oil is too high in the operation process of the transformer, heat is transferred into the semi-open clip-shaped frame and the deformation flow stirring needle bags, and at the moment, through the back-and-forth movement process of the clip-shaped sealing plate, hot air can circularly move along the U-shaped cooling pipeline, so that the insulating oil is effectively cooled.

Description

technical field [0001] The invention relates to the field of transformer oil tanks, in particular to an oil-freezing-proof transformer oil tank used in extremely cold regions. Background technique [0002] A transformer is a device that converts AC current, AC circuits, and characteristic impedance. When there is an AC circuit in the primary coil, the iron core (or iron core) generates alternating magnetic flux, which in turn generates a voltage (or current) in the secondary coil. Oil-immersed transformers use oil as the main insulation method of the transformer and rely on oil as the cooling medium, such as oil-immersed self-cooling, oil-immersed air-cooled, oil-immersed water-cooled and forced oil circulation, etc. The main internal components are iron core, winding , fuel tank, oil pillow, respirator, explosion-proof pipe (pressure relief valve), radiator, insulating bushing, tap changer, gas relay, thermometer, oil purifier, etc. [0003] Winter in northern my country ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the object of the present invention is to provide an anti-oil freezing type transformer oil tank used in extremely cold regions, which can realize the reciprocating movement process through the back-shaped sealing plate when the temperature of the insulating oil is low , so that multiple deformed flow-stirring needle capsules immersed in the oil undergo different degrees of expansion and contraction process, and, during the expansion and contraction process, they simultaneously perform rotational and twisting movements, so that the insulating oil in the box maintains fluidity at all times, increasing the insulation The kinetic energy of the oil and the heat energy generated by friction with the box, the semi-open circular frame and the deformed turbulence needle bag during the oil flow process can effectively reduce the freezing of the insulating oil at low temperature and ensure the normal start-up and operation of the transformer. , when the temperature of the insulating oil in the box is too high during the operation of the transformer, the heat is transferred to the inside of the semi-open circular frame and the deformed flow-stirring needle bag. The hot air in the return-shaped frame and the deformed stirring needle bag circulates along the U-shaped cooling pipe to effectively cool down the insulating oil and facilitate the normal operation of the transformer

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