CN102226966A

CN102226966A - Transformer

Info

Publication number: CN102226966A
Application number: CN2011100846971A
Authority: CN
Inventors: 王晓兵; 周奇; 包正科
Original assignee: ZHANGJIAGANG XIN TEBIAN S&T CO Ltd
Current assignee: ZHANGJIAGANG XIN TEBIAN S&T CO Ltd
Priority date: 2011-04-06
Filing date: 2011-04-06
Publication date: 2011-10-26

Abstract

The invention discloses a transformer with low-voltage copper busbars having no affect on winding sections and leads. The transformer comprises an iron core, three coils respectively wrapped on the iron core, upper pair and lower pair of pressing plates which are used to fix the iron core, three high-voltage leads which are arranged on the pressing plate on one side of the iron core, an even number of low-voltage copper busbars which are arranged on the other side of the iron core and are respectively connected through the leads and the coils, and low-voltage copper busbars which are arranged on the coils on one side of a high-voltage lead and respectively connected with the same number of low-voltage copper busbars on the other side of the iron core through the leads. The invention has the beneficial effects that low-voltage copper busbars are arranged on the coils at one side of the high-voltage lead with the same number of the low-voltage copper busbars on the other side of the iron core respectively through the leads; and since the requirement of the original transformer production process is satisfied, the total size of each low-voltage copper busbar can be reduced to half and the weight can be reduced to half. The lightweight low-voltage copper busbars cannot shift the winding section in the coil and the lead connected with the winding section, and further cannot cause a short circuit of the transformer.

Description

Transformer

Technical field

The present invention relates to a kind of transformer.

Background technology

As depicted in figs. 1 and 2, transformer comprise iron core 1, respectively be wrapped in three coils 9 on the iron core 1 and secured core 1 upper and lower two pairs of pressing plates 2, be arranged on coil 9 one side guides 2 three high-voltage connections 3 with 12 by lead-in wire 4 low-voltage copper bars 5 that link to each other with coil 9, be connected with four low-voltage copper bars 5 on each coil 9, and high-voltage connection 3 and low-voltage copper bar 5 lay respectively at coil 9 both sides.Four winding segments (not drawing among the figure) are arranged on each coil 9, and the corresponding with it respectively lead-in wire 3 of each winding segments links to each other.Above-mentioned transformer is when being used for the workplace of big electric current (referring generally to the electric current more than the 20kA), and according to the technological requirement of transformer, the width of low-voltage copper bar 5 and cross-sectional area are all bigger, makes low-voltage copper bar 5 very big very heavy.Bring very big difficulty with regard to the assembling procedure of giving transformer like this.For example, operating personnel need install low-voltage copper bar 5 by means of transportation, and because the gravity that low-voltage copper bar 5 is subjected to is bigger, make low-voltage copper bar 5 after installation, be shifted easily, adjacent winding segments in the coil 9 that this just makes with lead-in wire 4 links to each other can contact and produce friction, in case winding segments or the insulating barrier that goes between on 4 are worn, and are easy to cause transformer short-circuit, finally cause destroying the operation of whole transformer.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of low-voltage copper bar winding segments and lead-in wire not to be had the transformer of influence.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of transformer, comprise iron core, respectively be wrapped in three coils on the iron core and secured core upper and lower two pairs of pressing plates, be arranged on three high-voltage connections and the even number that is arranged on the iron core opposite side on iron core one side guide by the low-voltage copper bar that lead-in wire and coil link to each other respectively, be positioned on the coil of high-voltage connection one side and be connected with and the identical low-voltage copper bar of iron core opposite side low-voltage copper bar quantity by lead-in wire respectively.

The low-voltage copper bar that is positioned at the coil homonymy links together by wire clamp, and wire clamp is fixedlyed connected with pressing plate.

The invention has the beneficial effects as follows on the coil that is positioned at high-voltage connection one side and be provided with and the identical low-voltage copper bar of iron core opposite side low-voltage copper bar quantity by lead-in wire respectively, and satisfy under the manufacturing technique requirent of original transformer, the overall dimension of each low-voltage copper bar reduces half, and weight also just reduces half.Low-voltage copper bar after weight reduces is not enough to make and winding segments in the coil or the lead-in wire displacement that links to each other with winding segments also just can cause transformer short-circuit.

Description of drawings

Fig. 1 is the structural representation of transformer in the background technology;

Fig. 2 is that the A of Fig. 1 is to figure;

Fig. 3 is the structural representation of transformer of the present invention;

Fig. 4 is that the B of Fig. 3 is to figure.

Among Fig. 1, Fig. 2: 1, iron core, 2, pressing plate, 3, high-voltage connection, 4, lead-in wire, 5, low-voltage copper bar, 9, coil.

Among Fig. 3, Fig. 4: 1, iron core, 2, pressing plate, 3, high-voltage connection, 4, lead-in wire, 5, low-voltage copper bar, 6, support, 7, wire clamp, 8, support, 9, coil.

Embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.

As Fig. 3, shown in Figure 4, transformer of the present invention, comprise iron core 1, respectively be wrapped in three coils 9 on the iron core 1 and secured core 1 upper and lower two pairs of pressing plates 2, be arranged on three high-voltage connections 3 and even number on coil 9 one side guides 2 by the low-voltage copper bar 5 that lead-in wire 4 and coil 9 link to each other respectively by supporting 6, be positioned on the coil 9 of high-voltage connection 3 one sides respectively by going between and 4 be connected with and the identical low-voltage copper bar 5 of iron core 1 opposite side low-voltage copper bar 5 quantity.The concrete quantity of low-voltage copper bar 5 is set according to the actual requirements.Be provided with 12 low-voltage copper bars 5 in for example original transformer, and be connected with four low-voltage copper bars 5 on each coil 9, transformer so of the present invention just is provided with 24 low-voltage copper bars 5, and each coil 9 is provided with eight low-voltage copper bars 5, eight low-voltage copper bars 5 are divided into two groups and lay respectively at coil 9 both sides, and promptly the both sides of each coil 94 are connected with four low-voltage copper bars by going between respectively.In order further to reduce low-voltage copper bar 5 because of the influence of gravity to winding segments in the coil and lead-in wire 4, the low-voltage copper bar 5 that is positioned at coil 1 homonymy links together by wire clamp 7, and wire clamp 7 is fixedlyed connected with pressing plate 2 by support 8.

Advantage of the present invention is: by lead-in wire the low-voltage copper bar identical with iron core opposite side low-voltage copper bar quantity is set respectively on the coil that is positioned at high-voltage connection one side, and satisfy under the manufacturing technique requirent of original transformer, the overall dimension of each low-voltage copper bar reduces half, and weight also just reduces half. Low-voltage copper bar after weight reduces is not enough to so that the winding segments in the coil or the displacement of the lead-in wire that links to each other with winding segments just can not cause transformer short-circuit yet.

Claims

1. transformer, comprise iron core, respectively be wrapped in three coils on the iron core and secured core upper and lower two pairs of pressing plates, be arranged on three high-voltage connections and the even number that is arranged on the iron core opposite side on iron core one side guide by the low-voltage copper bar that lead-in wire and coil link to each other respectively, it is characterized in that: be positioned on the coil of high-voltage connection one side and be connected with and the identical low-voltage copper bar of iron core opposite side low-voltage copper bar quantity by lead-in wire respectively.

2. transformer according to claim 1 is characterized in that: the low-voltage copper bar that is positioned at the coil homonymy links together by wire clamp, and wire clamp is fixedlyed connected with pressing plate.