CN201112077Y

CN201112077Y - Transposed conductor for engine main transformer

Info

Publication number: CN201112077Y
Application number: CNU2007200468337U
Authority: CN
Inventors: 张进华
Original assignee: WUXI TOLY ELECTRIC CO Ltd
Current assignee: WUXI TOLY ELECTRIC CO Ltd
Priority date: 2007-09-30
Filing date: 2007-09-30
Publication date: 2008-09-10
Anticipated expiration: 2017-09-30

Abstract

The utility model relates to a transposed conductor for a locomotive main transformer, in particular to winding wires for a main transformer of DJ4 large power AC-transmission electric locomotive, pertaining to the technical field of transformers. The winding wires is characterized in that two lines of enameled rectangular wires that contact with each other on broadside are combined by acetal enameled rectangular wires; the upper surface and the back surface of the two lines of enameled rectangular wires are transposed into transposed enameled wiring harness along the same turning direction of the narrow side, and a plurality of layers of insulating paper tapes are entwined outside the transposed enameled wiring harness continuously and closely. The utility model has simple, compact and reasonable structure, can improve space utilization rate of the winding and reduce circulating current loss; a great deal of labor-hour is saved and as the transposed conductor is transposed by mechanical intertwisting, time for winding the transformer coil can be greatly shortened; the coils wound by the transposed conductor have pleasant appearance and accurate coil size, thus improving quality of finished products and reducing eddy current loss greatly.

Description

The locomotive main transformer transposed conductor

Technical field

The utility model relates to a kind of locomotive main transformer transposed conductor, and the winding wire of DJ4 high-power AC transmission power car main transformer use specifically belongs to the transformer technology field.

Background technology

In prior art, adopt many flat wire with paper wrappeds when coiling (lap wound) coil, need replace, and transposition need take up room, the operating personnel that participate in are more, complex process, the production time is long, work efficiency is low, and the coil of many flat wire with paper wrapped coilings causes having the circulating current loss because transposition is incomplete.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned weak point, thereby a kind of locomotive main transformer transposed conductor is provided, and can improve the space availability ratio of winding, and reducing volume increases capacity and reduce cost; And can reduce because circulation supplementary load loss and the eddy current loss that stray field causes.

Main solution of the present utility model is achieved in that

The utility model is made up of acetal enameled sheet wire, insulating paper strip, feature is that described acetal enameled sheet wire is combined into the two row enameled sheet wires that wide face is in contact with one another, on two row enameled sheet wires, make the same enamel-cover wire harness that turns to after replacing into transposition along leptoprosopy, and the multilayer insulation paper tape is made closely to twine continuously in the outside of the enamel-cover wire harness after transposition with following.

Compared with the prior art the utility model has the following advantages:

The utility model is simple, compact and reasonable for structure; Can improve the winding space utilance; Reduce the circulating current loss; Save a large amount of man-hours, because transposed conductor is to form by the stranded transposition of machinery, so the time of coiling transformer coil can shorten greatly; The coil of winding transposition wire, outward appearance is beautiful, and coil dimension is accurate, thereby has improved end product quality; Can reduce eddy current loss significantly, eddy current loss is directly proportional with the cross section of single core, so the little solid conductor in cross section is through stranded and transposed conductor that constitute can reduce the eddy current loss in the winding significantly; Because therefore square being directly proportional of eddy current loss and frequency, reduced eddy current loss significantly the coil that some contains higher harmonics had very important significance.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model structure side view.

Embodiment

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model mainly is made up of enamel-cover wire harness 2, insulating paper strip 3 after acetal enameled sheet wire 1, the transposition.

The utility model mainly is made up of acetal enameled sheet wire 1, insulating paper strip 3.Described acetal enameled sheet wire 1 is combined into the two row enameled sheet wires that wide face is in contact with one another, on request on two row enameled sheet wires and below do the same transposition that turns to along leptoprosopy, and multilayer insulation paper tape 3 is made closely to twine continuously in enamel-cover wire harness 2 outsides after transposition.The coil of the utility model coiling, outward appearance is beautiful, and coil dimension is accurate.

Claims

1, a kind of locomotive main transformer transposed conductor, comprise acetal enameled sheet wire (1), insulating paper strip (3), it is characterized in that described acetal enameled sheet wire (1) is combined into the two row enameled sheet wires that wide face is in contact with one another, on two row enameled sheet wires with following along leptoprosopy the same enamel-cover wire harness (2) that turns to after replacing into transposition, and twine multilayer insulation paper tape (3) in enamel-cover wire harness (2) outside.