CN201044200Y - Transposition conducting wire - Google Patents

Abstract

A transposed conductor is provided. The utility model relates to a transposed conductor for transformer windings, which comprises two columns of wire cores made up of a plurality of enameled copper flat wires. A wire core is centered on a wire body constituted by the two columns of wire cores, each wire core is provided with a transposition arc in the length direction, no insulation paper is arranged between the two columns of wire cores, a core wrap layer is arranged outside the wire cores and a plurality of channels with openings at both sides of the transposed conductor are arranged at intervals in equidistance in the middle along the height direction of the transposed conductor; the core wrap layer is a thermal contraction net. In order to improve the heat dispersion feature of the transposed conductor, the utility model is particularly provided with an additional oil passage in the middle of the transposed conductor, which increases the heat dispersion area of the windings, decreases the temperature of the transformer; meanwhile, in order to facilitate the coolant oil entering the wire cores, the thermal contraction net is selected for the core wrap layer of the utility model, and when the coils are heated, the thermal contraction net contracts, which on one hand enables the conductor to adhere more closely and on the other hand enables the coolant oil entering the wire cores.

Description

Transposed conductor

Technical field

The utility model relates to the technical field of cable, electric wire, refers more particularly to a kind of Transformer Winding transposed conductor.

Background technology

At present, on the winding wire that is applied to high-power transformer that transposed conductor is a large amount of, increase along with the power transformer capacity, heavy in section transposed conductor has obtained great use, and the caloric value of coil rises gradually, but owing to the line of coiling is made up of many copper strap wire cores, cause caloric value bigger, and heat dispersion is not good, has improved the temperature of transformer, has reduced its useful life.These problems have caused transformer often because of the excess load heating causes fault, cause transformer to reduce useful life, and volume of transformer increases, and cost improves.

The utility model content

The utility model is at above-mentioned defective, purpose be to provide a kind of in core the passage of the logical oil of horizontally set, make cold oil can flow in the middle of the core transposed conductor of perfect heat-dissipating.

The technical solution of the utility model is: comprise the two alignment cores of being made up of even numbers root enameling copper strap wire, on the line body that two alignment cores are formed, be provided with the single line core between two parties, every core is provided with the transposition arc in the longitudinal direction, between two alignment cores, insulating paper is not set, be provided with lapping layer in the core outside, the passage of some openings in the transposed conductor two sides is equidistantly spaced at the middle part of transposed conductor short transverse; Described lapping layer is the thermal contraction net.

The utility model is in order to improve the heat dispersion of transposed conductor, and special formation in the middle of transposed conductor adds oil duct, so just increased the area of dissipation of winding coil, reduced the temperature of transformer.In order to make cooling by entering core, lapping layer of the present utility model has been selected the thermal contraction net for use simultaneously, tightens up at coil adstante febre thermal contraction net, and it is tightr on the one hand lead to be bondd, and can make cold oil enter core on the other hand.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model

1 is enameling copper strap wire among the figure, the 2nd, and passage, the 3rd, thermal contraction net, the 4th, thermal contraction mesh.

Fig. 2 is that the A-A of Fig. 1 is to view

Embodiment

The utility model comprises the two alignment cores of being made up of even numbers root enameling copper strap wire 1, on the line body that two alignment cores are formed, be provided with the single line core between two parties, every core is provided with the transposition arc in the longitudinal direction, between two alignment cores, insulating paper is not set, be provided with lapping layer in the core outside, the passage 2 of some openings in the transposed conductor two sides is equidistantly spaced at middle part, transposed conductor cross section; Lapping layer is a thermal contraction net 3.

When the utility model is used on the transformer, its circumferential week can form several horizontal oil ducts, is beneficial to the direct heat exchange of core and transformer oil like this, simultaneously because lapping layer has adopted thermal contraction net 3, make cooling by can be by thermal contraction mesh 4 admission passages 2, heat dispersion be improved.Thermal contraction net 3 can also make the rigidity of transposed conductor and shock resistance be enhanced.

Claims (1)

1. transposed conductor, comprise the two alignment cores of forming by even numbers root enameling copper strap wire, on the line body that two alignment cores are formed, be provided with the single line core between two parties, every core is provided with the transposition arc in the longitudinal direction, between two alignment cores, insulating paper is not set, be provided with lapping layer in the core outside, it is characterized in that the passage of some openings in the transposed conductor two sides is equidistantly spaced at the middle part of transposed conductor short transverse; Described lapping layer is the thermal contraction net.

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