Mining explosion-proof all-insulation dry type transformer with amorphous alloy iron core for mobile transformer substation

Abstract

A mining explosion-proof all-insulation dry type transformer with an amorphous alloy iron core for a mobile transformer substation comprises an integral winding, the iron core, an upper clamp, a lower clamp and a shell, wherein the integral winding includes low-voltage coils and high-voltage coils. The mining explosion-proof all-insulation dry type transformer is characterized in that insulation layers are arranged among layers of the low-voltage coils, the high-voltage coils are arranged on the outer layer of the low-voltage coils, each insulation layer is arranged between each two adjacent layers of the high-voltage coils, an outer insulation layer covers the high-voltage coil, and the integral winding has the square section. The iron core is the amorphous alloy iron core, and an assembling lap joint of the iron core is arranged on the lower portion. The upper clamp and the lower clamp are non-metallic parts cast by epoxy resin and reinforced by filled glass fibers, the U-shaped sections of the upper clamp and the lower clamp cap the upper yoke and the lower yoke to press the upper end face and the lower end face of the winding and are fastened by pull bolts, and the pull bolts are symmetrically mounted on the low-voltage side and the high-voltage side to fasten the upper clamp and the lower clamp. The mining explosion-proof all-insulation dry type transformer has the advantages of long service life, low loss, low noise, no maintenance or pollution, high reliability, flame retardance, fire resistance, recyclability after being used up and the like.

Description

technical field

[0001] The invention relates to a movable complete power supply and transformation device, in particular to an amorphous alloy iron core fully insulated dry core for mine explosion-proof mobile substations suitable for mines with explosion hazards such as methane mixed gas and coal dust. A type transformer belongs to the technical field of coal mine electromechanical equipment. Background technique

[0002] At present, mine explosion-proof mobile substation products are composed of three parts: mine explosion-proof high-voltage vacuum power distribution device, mine explosion-proof dry-type transformer, and mine explosion-proof low-voltage comprehensive protection box. Among them, the mine explosion-proof dry-type transformer is generally an impregnated dry-type transformer. Its iron core is a stacked silicon steel sheet, the coil is wound with insulated copper wire and impregnated with insulating varnish, and the shell is a cuboid structure spliced ​​with co...

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