A mining explosion-proof dry-type transformer

Abstract

The invention discloses an explosion-proof dry type transformer for a mine. The explosion-proof dry type transformer structurally comprises a winding box, a main body, a mineral powder filtering mechanism, a terminal box cover, a fan base, a wire outlet copper plate and a clamping piece. The problem is solved by arranging the mineral powder filtering mechanism on the structure, the transformer ispositioned in a mining area environment, mineral powder is inevitably mixed with the insulating oil, the mineral powder filtering mechanism changes the structure that insulating oil is directly injected and used in the past, mineral powder and other impurities in the oil liquid are filtered out through a series of processes such as precipitation, sieving, sedimentation, separation and filtration,part of mineral powder is filtered by the vibrating screen, settling, separating and isolating actions are achieved by a settler, and finally, the purity of the insulating oil reaches the use standardby utilizing the filter, so that the problem of transformer faults caused by reduction of the insulating property due to reduction of the purity of the insulating oil is effectively avoided.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a mine-used explosion-proof dry-type transformer. Background technique [0002] A transformer is a device that uses the principle of electromagnetic induction to convert alternating current energy into different voltages, currents and other parameters. Most of its internal insulating liners and brackets are filled with organic combustible substances and contain a large amount of insulating oil. Therefore, its fire hazard lies in its flammability. , Once a serious overload or short circuit occurs inside the transformer, the flammable insulating material and insulating oil will be decomposed and burned by high temperature or electric arc, and a large amount of gas will be generated to increase the pressure inside the transformer sharply, causing the shell to burst, a large amount of oil sprayed, and the burning oil The fire flow will further expand the fire hazard, especially the transf...

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Problems solved by technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to convert alternating current energy into different voltages, currents and other parameters. Most of its internal insulating liners and brackets are filled with organic combustible substances and contain a large amount of insulating oil. Therefore, its fire hazard lies in its flammability. , Once a serious overload or short circuit occurs inside the transformer, the flammable insulating material and insulating oil will be decomposed and burned by high temperature or electric arc, and a large amount of gas will be generated to increase the pressure inside the transformer sharply, causing the shell to burst, a large amount of oil sprayed, and the burning oil The flow will further expand the fire hazard, especially the transformer used in the mining area is prone to short circuit and explosion, because the storage, transportation and operation and maintenance of transformer insulating oil need to be implemented in the mining area, and the mineral powder in the mining area is mixed into the oil It will greatly reduce the insulation strength. When the insulation strength is reduced to a certain value, a short circuit will occur. Therefore, how to remove the mineral powder in the transformer insulating oil is the primary task to prevent the transformer from short circuit and explosion. Based on the above premise, this case developed a A mining explosion-proof dry-type transformer to solve this problem

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