Aluminum foil wound hollow current limiting reactor

Abstract

The invention discloses an aluminum foil wound hollow current limiting reactor, comprising an insulation cylinder, a plurality of struts and aluminum foil. The plurality of struts are partially arranged at the external part of the insulation cylinder. A first aluminum copper connector is arranged between any two struts out of the insulation cylinder. A plurality of layers of DMD insulation paper is wrapped on the aluminum copper connector. The aluminum foil is long strip-shaped thin plates. The aluminum foil is wound out of the insulation cylinder and start is welded on the first aluminum copper connector. After the aluminum foil is wound for four turns, the plurality of struts are cushioned out of the aluminum foil, and the cycle is repeated until totally 36 turns are wound. The struts are aligned mutually. A layer of DMS insulation paper is cushioned between turns. Paper plate strips are cushioned at end part neckholes. After the aluminum foil is wound for 36 turns, a second aluminum copper connector is welded at the tail end of the aluminum foil. Two layers of semi-folded thermal shrinkage tapes are wrapped out of the aluminum foil and then a layer of semi-folded glass tapes is wrapped out of the aluminum foil. According to the reactor, the deficiency in the prior is overcome, the aluminum foil and the immersed DMD insulation paper are wound through layer insulation, the wire transposition problem is solved, the winding time is shortened, the mechanical strength of a coil is improved, and the service life is improved.

Description

technical field [0001] The invention relates to the technical field of air-core current-limiting reactors, in particular to an aluminum-foil-wound air-core current-limiting reactor. Background technique [0002] The current-limiting reactor is mainly used to limit the short-circuit current when a short-circuit fault occurs in the power system, so that the circuit breaker can disconnect the faulty line, and maintain the line voltage at a certain level, so that the electrical equipment on the normal line can maintain normal operation; [0003] Among them, the coils of the existing air-core current-limiting reactors are formed by winding multiple wires in parallel. In order to reduce the circulating current, the parallel wires should be transposed, which increases the complexity of the winding process. Contents of the invention [0004] The object of the present invention is to provide a current-limiting reactor wrapped around aluminum foil, which overcomes the deficiencies o...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a current-limiting reactor wrapped around aluminum foil, which overcomes the deficiencies of the prior art. The current-limiting reactor wrapped around air with aluminum foil is made of aluminum foil plus DMD insulating paper as interlayer insulation, which solves the problem of It solves the problem of wire transposition, shortens the winding time, strengthens the mechanical strength of the coil, and prolongs the service life

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