CN203366951U

CN203366951U - Multislot high-voltage transformer framework and multislot high-voltage transformer

Info

Publication number: CN203366951U
Application number: CN 201320350770
Authority: CN
Inventors: 官继红; 张志�; 桂成才
Original assignee: Shenzhen Megmeet Electrical Co Ltd
Current assignee: Shenzhen Megmeet Electrical Co Ltd
Priority date: 2013-06-18
Filing date: 2013-06-18
Publication date: 2013-12-25
Anticipated expiration: 2023-06-18

Abstract

The utility model discloses a multislot high-voltage transformer framework and a multislot high-voltage transformer. The multislot high-voltage transformer comprises a transformer framework and at least two high-voltage windings, the transformer framework is the multislot high-voltage transformer, the high-voltage windings are arranged in the high-voltage slots of the transformer framework, and the adjacent high-voltage windings are connected through wire slots. The wire slots of the framework are U-shaped slots, openings of the upper portions of the U-shaped slots are formed in one side of an insulation retaining wall, and openings of the inner ends of the U-shaped slots are close to the slot bottoms of coil ring slots. The outer ends of the U-shaped slots are communicated with wire inlets, and the wire inlets are formed in the outer edge of the other side of the insulation retaining wall. The insulation problem of the connecting position of the two high-voltage windings is solved, the thickness of the insulation retaining wall is small, and the axial size of the framework and the axial size of the multislot high-voltage transformer are reduced.

Description

A kind of multiple-grooved high-tension transformer skeleton and multiple-grooved high-tension transformer

[technical field]

The utility model relates to high-tension transformer, relates in particular to a kind of multiple-grooved high-tension transformer skeleton and multiple-grooved high-tension transformer.

[background technology]

The very high transformer for voltage, if winding sandwich wound in a mounting groove can cause the relative voltage of adjacent two layers very high, be difficult to solve its Insulation Problems.Therefore, for general high-tension transformer, in order to reduce the voltage stress of high pressure winding, become a plurality of windings in series to form the high voltage winding component, each winding lays respectively in different insulation tanks, between adjacent series connection winding, with the insulation barricade, intercept, with the Insulation Problems between having solved mutually.But, having the place of wire casing at the insulation barricade, the insulation between two windings is just weakened.In order to address this problem, Chinese utility model patent (patent No. CN201120553977.8) discloses a kind of multiple-grooved high-tension transformer skeleton and multiple-grooved high-tension transformer.The crossed beam trunking of the insulation barricade of this utility model patent multiple-grooved high-tension transformer skeleton adopts flume structure, coiling and the connection of two high pressure windings have been facilitated, reduced to a certain extent the thickness of insulation barricade, the insulation property that insulate between adjacent high pressure winding have been improved, but, what adopt due to the skewed slot of this utility model patent is direct through groove, and the thickness of insulation barricade is still larger, and insulation property also also have the space promoted.

[summary of the invention]

The technical problems to be solved in the utility model is to provide the multiple-grooved high-tension transformer skeleton that a kind of size is little, the high-voltage line turn turn insulation is good.

The technical problems to be solved in the utility model is to provide the multiple-grooved high-tension transformer that a kind of skeleton size is little, the high-voltage line turn turn insulation is good.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of multiple-grooved high-tension transformer skeleton, comprise at least two coil annular grooves, comprise the insulation barricade between the coil annular groove, on the insulation barricade, comprise crossed beam trunking, described crossed beam trunking is U-lag, the opening on U-lag top is positioned at a side of insulation barricade, and the opening of U-lag the inner is near the bottom land of coil annular groove; The U-lag outer end is communicated with incoming line, and described incoming line is positioned at the outer rim position of insulation barricade opposite side.

Above-described multiple-grooved high-tension transformer skeleton, the lateral wall of U-lag is parallel with the insulation barricade.

Above-described multiple-grooved high-tension transformer skeleton, the angle of U-lag and coil annular groove bottom land tangential direction is not more than 20 °.

Above-described multiple-grooved high-tension transformer skeleton, the height of U-lag lateral wall is more than or equal to the groove width of U-lag.

Above-described multiple-grooved high-tension transformer skeleton, comprise at least three coil annular grooves, and the crossed beam trunking on adjacent two insulation barricades staggers ° at circumferencial direction.

Above-described multiple-grooved high-tension transformer skeleton, the insulation barricade is in the thickening of the both sides at the position of U-lag, the lateral wall of U-lag exceeds insulation other side, position of barricade, the insulation barricade of U-lag upper opening top comprises the inclined-plane of U-lag inlet wire, and the insulation barricade of the inner opening of U-lag comprises the inclined-plane of U-lag outlet.

Above-described multiple-grooved high-tension transformer skeleton, the thickening position of two the corresponding insulation of coil annular groove outside barricade barricades comprises dodges groove.

A kind of technical scheme of multiple-grooved high-tension transformer, comprise transformer framework and at least two high pressure windings, described transformer framework is above-mentioned multiple-grooved high-tension transformer skeleton, described high pressure winding is arranged in the high-pressure trough of transformer framework, and adjacent high pressure winding connects by described crossed beam trunking.

The crossed beam trunking of the utility model multiple-grooved high-tension transformer skeleton adopts the U-lag structure, has well improved the Insulation Problems between the high pressure winding of two of winding junctions, and the thickness of insulation barricade is less, has reduced the axial dimension of skeleton and multiple-grooved high-tension transformer.

[accompanying drawing explanation]

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is the front view of the utility model multiple-grooved high-tension transformer skeleton.

Fig. 2 is the partial enlarged drawing at I position in Fig. 1.

Fig. 3 is the vertical view of the utility model multiple-grooved high-tension transformer skeleton.

Fig. 4 is that A in Fig. 3 is to cutaway view.

Fig. 5 is that B in Fig. 3 is to cutaway view.

Fig. 6 is the partial enlarged drawing at II position in Fig. 3.

Fig. 7 is the front view of the utility model multiple-grooved high-tension transformer.

[embodiment]

In the utility model embodiment shown in Fig. 1 to Fig. 7, the multiple-grooved high-tension transformer comprises transformer framework 3 and 3 high pressure windings 4.

Transformer framework 3 has 3 coil annular grooves 303, and high pressure winding 4 is wrapped in the coil annular groove 303 of transformer framework 3.Insulation barricade 301 is arranged between adjacent coil annular groove 303, on insulation barricade 301, the crossed beam trunking 302 that is communicated with adjacent two coil annular grooves 303 is arranged, adjacent high pressure winding 4 connects by crossed beam trunking 302.

Crossed beam trunking 302 is U-lag, and the opening on U-lag 302 tops is positioned at the right side of insulation barricade, and U-lag 302 is positioned at the tangential direction on the coil annular groove 303 bottom land faces of cylinder.

The lateral wall 304 of U-lag 302 is parallel with insulation barricade 301, and the opening 302a of U-lag 302 the inners is near the bottom land 303a of coil annular groove 303; U-lag 302 outer ends are communicated with incoming line 305, and incoming line 305 is positioned at insulation barricade 301 outer rim left sides.

U-lag 302 need to have enough degree of depth, and the height of U-lag 302 lateral walls 304 should be more than or equal to the groove width of U-lag 302.

Insulation barricade 301 all will suitably be thickeied in the both sides of U-lag.On right side, the lateral wall 304 of U-lag 302 exceeds the side at insulation barricade 301 other positions; In left side, local protuberance 308 exceeds the side at insulation barricade 301 other positions.

The insulation barricade 301 of U-lag 302 upper opening tops has the inclined-plane 306 of a U-lag inlet wire, and the insulation barricade 301 of U-lag 302 inner openings has the inclined-plane 307 of guiding U-lag outlet.

The thickening position of the corresponding insulation of the outer lateral retaining wall of each coil annular groove 303 barricade 301 need to arrange dodges groove 309.

Insulation barricade 301 all will suitably be thickeied in the both sides of U-lag, and in order to reduce the axial dimension of transformer framework 3, the crossed beam trunking on adjacent two insulation barricades 301 will stagger 180 ° mutually at circumferencial direction.

The crossed beam trunking of the utility model multiple-grooved high-tension transformer skeleton adopts the U-lag structure, incoming line is positioned at the outer rim position of insulation barricade opposite side, incoming line only is communicated with U-lag, at the incoming line position, the insulation barricade does not penetrate, this incoming line structure has well improved the Insulation Problems between the high pressure winding of two of winding junctions, and the thickness of insulation barricade can be further less, also reduced the axial dimension of skeleton and multiple-grooved high-tension transformer simultaneously.

Claims

1. a multiple-grooved high-tension transformer skeleton, comprise at least two coil annular grooves, comprise the insulation barricade between the coil annular groove, comprise crossed beam trunking on the insulation barricade, it is characterized in that, described crossed beam trunking is U-lag, and the opening on U-lag top is positioned at a side of insulation barricade, and the opening of U-lag the inner is near the bottom land of coil annular groove; The U-lag outer end is communicated with incoming line, and described incoming line is positioned at the outer rim position of insulation barricade opposite side.

2. multiple-grooved high-tension transformer skeleton according to claim 1, is characterized in that, the lateral wall of U-lag is parallel with the insulation barricade.

3. multiple-grooved high-tension transformer skeleton according to claim 1, is characterized in that, the angle of U-lag and coil annular groove bottom land tangential direction is not more than 20 °.

4. multiple-grooved high-tension transformer skeleton according to claim 1, is characterized in that, the height of U-lag lateral wall is more than or equal to the groove width of U-lag.

5. multiple-grooved high-tension transformer skeleton according to claim 1, is characterized in that, comprises at least three coil annular grooves, and the crossed beam trunking on adjacent two insulation barricades staggers at circumferencial direction.

6. multiple-grooved high-tension transformer skeleton according to claim 1, it is characterized in that, the insulation barricade is in the thickening of the both sides at the position of U-lag, the lateral wall of U-lag exceeds insulation other side, position of barricade, the insulation barricade of U-lag upper opening top comprises the inclined-plane of U-lag inlet wire, and the insulation barricade of the inner opening of U-lag comprises the inclined-plane of U-lag outlet.

7. multiple-grooved high-tension transformer skeleton according to claim 6, is characterized in that, the thickening position of two the corresponding insulation of coil annular groove outside barricade barricades comprises dodges groove.

8. a multiple-grooved high-tension transformer, comprise transformer framework and at least two high pressure windings, it is characterized in that, described transformer framework is multiple-grooved high-tension transformer skeleton claimed in claim 1, described high pressure winding is arranged in the high-pressure trough of transformer framework, and adjacent high pressure winding connects by described crossed beam trunking.