CN204857225U - Varnished cloth combination transposed conductor - Google Patents

Abstract

The utility model provides an enamelled combined transposition wire, which can not only realize the short length of the transposition cycle, avoid movement, insulation damage and short circuit of the enameled copper flat wire during the winding process of the coil, but also further realize The transposed enamelled copper flat wires have equal lengths, and there is no potential difference after winding the transformer windings, reducing the possibility of eddy current loss. It includes the transposition wire core, and the transposition wire core is composed of an even number of flat enamelled copper wires superimposed on each other to form two rows side by side, and two adjacent enamelled copper flat wires in each row form a group, each group The enamelled copper flat wires are sequentially transposed in the same direction along the narrow surface, and the feature is that after each group of enameled copper flat wires circulates for one cycle, a single enameled copper flat wire is sequentially transposed in the same direction along the narrow surface , so that the two enamelled copper flat wires constituting each group of enamelled copper flat wires can be transposed up and down.

Description

An enamelled combined transposition wire

technical field

The utility model relates to the technical field of production of transposition conductors, in particular to the field of transposition conductors for power transformers, in particular to an enamelled composite transposition conductor.

Background technique

Transposition wire refers to the combination of a certain number of enameled copper flat wires into two rows in which the wide surfaces are in contact with each other, and the transposition of the same direction is made on the top and bottom of the two rows of enameled wires along the narrow surface as required, and is covered with electrical insulating paper. The belt is composed of multiple layers of continuous and tightly wrapped. At present, the transposition cores constituting the transposition wires are all formed by a single enamelled flat wire in turn. Once there are too many transposition cores, for example, 60 to 80 transposition cores, the transposition cycle The length will reach 4m ~ 5m, and usually when the length of a complete transposition cycle of the transposed wire is less than 3m, the winding requirements of the transformer coil can be met. When the length of the transposition cycle exceeds 3m, paint will be generated during the coil winding process. The movement of the flat copper-clad wire caused damage to the insulation of the enamelled copper flat wire and caused a short circuit. Chinese patent CN201210295349.3 discloses that every two enamelled copper flat wires superimposed adjacent to each other make the cyclic transposition of the same direction along the narrow surface at the same time to shorten the length of the transposition period, but eddy currents are found during the winding process of the transformer winding The possibility of loss is high, and we have found through a large number of experiments that the reason is that there is a potential difference between the enamelled copper flat wires of the transposed wires.

Contents of the invention

In view of the above problems, the utility model provides an enamelled combined transposition wire, which can not only realize the short length of the transposition cycle, but also avoid the movement, insulation damage and short circuit of the enameled copper flat wire during the coil winding process, And it can further realize the equal length of the transposed enamelled flat copper wire, no potential difference after winding the transformer winding, and reduce the possibility of eddy current loss.

Its technical solution is as follows, which includes a transposition wire core, and the transposition wire core is composed of an even number of enamelled copper flat wires superimposed on each other according to the wide surface to form two rows side by side, and two enameled copper wires adjacent to each other up and down in each row Copper flat wires constitute a group, and each group of enamelled copper flat wires sequentially makes the same turn around the narrow surface. The transposition of the same direction along the narrow surface makes the two enamelled copper flat wires constituting each group of enamelled copper flat wires realize up and down transposition.

It is further characterized by:

Lining paper is lined between the two rows of enamelled copper flat wires;

The transposition wire core is covered with a polyester mesh belt.

After adopting the structure of the utility model, the transposition wire core is double transposed, which effectively shortens the complete transposition period, and can effectively avoid the movement, insulation damage and short circuit of the enameled copper flat wire during the coil winding process, ensuring The product quality is safe; after the transposition of the double cores, a single transposition is performed to realize the exchange of the upper and lower positions of the adjacent two transposition cores, so that the two adjacent transposition cores at the same time are transposed The core lengths are equal, and there is no potential difference after winding the transformer winding, reducing the possibility of eddy current loss.

Description of drawings

Figure 1 is a schematic cross-sectional structure diagram of the utility model enamelled combined transposition conductor.

Fig. 2 is a schematic diagram of the process of a complete transposition cycle of the enamelled combined transposition conductor of the present invention.

Figure 2-1 is a partially enlarged structural schematic diagram of the virtual frame part S1 in Figure 2, which specifically shows the process of cyclic transposition of each group of enamelled copper flat wires in the same direction along the narrow surface.

Figure 2-2 is a partially enlarged structural schematic diagram of the virtual frame part S2 in Figure 2, which specifically shows that after each group of enamelled copper flat wires is cyclically transposed for a week, a single enamelled copper flat wire makes the same turn along the narrow surface in sequence Transposition process.

Figure 2-3 is a partially enlarged structural schematic diagram of the virtual frame part S3 in Figure 2, specifically showing that each group of enamelled copper flat wires is transposed sequentially after the transposition of a single enamelled copper flat wire to complete the transposition cycle the process of.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 2-1 to Fig. 2-3, the enamelled combined transposition wire 101 includes several transposition wire cores, 11, 12, 21, 22, 31, 32, 41 in Fig. 1 , 42, 51, and 52 are all transposition wire cores, and the transposition cores are composed of an even number of flat enamelled copper wires superimposed on each other according to the wide surface to form two rows side by side, and two adjacent enameled copper wires in each row The flat wires constitute a group, and each group of enamelled copper flat wires makes a circular transposition in the same direction along the narrow surface. As shown in Figure 2-1, the enameled copper flat wires 11 and 12 form a group, and the 11 is superimposed on the enamelled copper flat wire 12, enamelled copper flat wires 21 and 22 form a group, enamelled copper flat wire 21 is superimposed on the enamelled copper flat wire 22, enameled copper flat wires 31 and 32 form a group , The enamelled copper flat wire 31 is superimposed on the enamelled copper flat wire 32, the enamelled copper flat wire 41 and 42 form a group, the enamelled copper flat wire 41 is superimposed on the enamelled copper flat wire 42, the enamelled copper flat wire 51 and 52 are a group, enamelled copper flat wire 51 is superimposed on the top of enamelled copper flat wire 52, these 5 groups of double enamelled copper flat wires are sequentially transposed in the same direction along the narrow surface; each group of enameled copper flat wires After the copper flat wire circulates for one cycle, the single enamelled copper flat wire is sequentially transposed in the same direction along the narrow surface, so that the two enamelled copper flat wires constituting each group of enamelled copper flat wires can be transposed up and down, as shown in the figure As shown in 2-2, the enamelled copper flat wire 12 is superimposed on the enamelled copper flat wire 11, the enamelled copper flat wire 22 is superimposed on the enamelled copper flat wire 21, and the enamelled copper flat wire 32 is superimposed on the enamelled copper flat wire Above the wire 31, the flat enamelled copper wire 42 is superimposed on the top of the flat enamelled copper wire 41, and the flat enamelled copper wire 52 is superimposed on the top of the flat enamelled copper wire 51. Since a single enamelled copper flat wire can not reach Cycle cycle, so as shown in Figure 2-3, continue to carry out the sequential transposition between groups to complement the transposition cycle; between the two columns of enamelled copper flat wires is lined with backing paper 102; Transposition wire core outsourcing polyester mesh belt 103.

Claims (3)

1. an enamel-cover combined shifting lead, it comprises transposition core, two row that described transposition core is superimposed to form side by side by wide mutually by even number root enameling copper strap wire, often arrange that two neighbouring enameling copper strap wires form one group, each group enameling copper strap wire makes the same cycle transposition turned to along leptoprosopy successively, it is characterized in that: after each group enameling copper strap wire circulates one week, single enameling copper strap wire does the same transposition turned to along leptoprosopy successively, makes two enameling copper strap wires forming each group enameling copper strap wire realize replacing up and down.

2. a kind of enamel-cover combined shifting lead according to claim 1, is characterized in that: between described two row enameling copper strap wires, pad has lining paper.

3. a kind of enamel-cover combined shifting lead according to claim 1, is characterized in that: described transposition core outsourcing polyester guipure.