CN204792358U - Take transformer of soft square ring - Google Patents

Abstract

The utility model discloses a take transformer of soft square ring, main empty cushion, soft square ring and the high -pressure coil of saying cup joints in proper order on low voltage coil, and soft square ring is bonded by 0.1GDS point adhesive tape and the insulating crepe paper of 0.08 electrician and forms, and the both ends of soft square ring are turned up outwardly directedly, and the insulating crepe paper of 0.08 electrician covers high -pressure coil's both ends face. The utility model discloses has strengthened the protection to the insulating weak department of end winding, has improved the end winding field intensity distribution, increased end winding's creepage distance, guarantee high voltage transformer high -pressure coil to low voltage coil, to unshakable in one's determination, do not have sufficient electrical strength to ground to ensure that the transformer can long -term safe operation.

Description

A kind of transformer with soft corner-ring

Technical field

The utility model relates to a kind of transformer.

Background technology

In line with the object of materials saving, along with the progress of Transformer Manufacturing Technology, in existing transformer insulation structure design the empty road of main insulation usually select smaller.But the dielectric strength between transformer high-voltage coil and low-voltage coil reduces along with the reduction in the empty road of main insulation.High voltage product coil overhang insulation is link very weak in insulation system simultaneously, and reason is as follows: 1) end winding electric field pole is uneven, and field intensity easily produces distortion; 2) there is wedge angle in insulation herein, causes electric shape difference, easily discharge; 3) due to the existence of wedge angle, insulate when device body press-fits easily damaged herein; 4) end winding is withstand voltage test and incoming wave test direct effect point.Thus the electric discharge of end winding main insulation generation oil clearance or the probability creepage along face very large.

Summary of the invention

For solving present transformer Problems existing in insulation property, the utility model provides a kind of transformer with soft corner-ring, its technical scheme taked is: comprise low-voltage coil, main empty path cushion block, soft corner-ring and high-tension coil, main empty path cushion block, soft corner-ring and high-tension coil are socketed on low-voltage coil successively, soft corner-ring is by 0.1GDS point gummed paper and 0.08 electric insulation crimped paper is bonding forms, the two ends of soft corner-ring are turned up protruding, and 0.08 electric insulation crimped paper covers the both ends of the surface of high-tension coil.

The problem that the utility model dielectric strength solved between present transformer transformer high-voltage coil and low-voltage coil reduces and end winding insulation is weak, 0.08 electric insulation crimped paper one can improve the radiating effect of coil facing to high-tension coil, 0.1GDS point gummed paper withstand voltage level is high, can improve transformer high-voltage coil to low, to unshakable in one's determination, to low-voltage coil dielectric strength.

Remarkable result of the present utility model is: strengthen the protection of end winding insulation compared with weakness; improve end winding field strength distribution; add the creepage distance of end winding; ensure high voltage transformer high-tension coil to low-voltage coil, to unshakable in one's determination, have enough electrical strengths over the ground, thus guarantee that transformer energy long-term safety is run.It is simple that this practical patent also has making, and assembling is simple, and the features such as cost of manufacture is low, long service life, can shorten main empty path insulation distance, make transformer device structure compacter, saves cost.

Accompanying drawing explanation

Fig. 1 is structure expanded view of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model will be further described.

As shown in Figure 1, main empty path cushion block 2, soft corner-ring 3 and high-tension coil 4 are socketed on low-voltage coil 1 successively, soft corner-ring 3 is by 0.1GDS point gummed paper and 0.08 electric insulation crimped paper is bonding forms, the two ends of soft corner-ring 3 are turned up protruding, and 0.08 electric insulation crimped paper covers the both ends of the surface of high-tension coil 4.

During making, main empty path cushion block 2 is first enclosed after the complete low-voltage coil 1 of coiling, wrap again and start coiling high-tension coil 4(after soft corner-ring 3 and note 0.08 electric insulation crimped paper one facing to high-tension coil), after coil winding completes, main empty path soft corner-ring 3 liang of external parts are covered high-voltage coil end 4, and compress soft corner-ring 3 liang of external parts when device body has been set with core insulation.

Claims (1)

1. the transformer with soft corner-ring, comprise low-voltage coil (1), main empty path cushion block (2), soft corner-ring (3) and high-tension coil (4), it is characterized in that: main empty path cushion block (2), soft corner-ring (3) and high-tension coil (4) are socketed on low-voltage coil (1) successively, soft corner-ring (3) is by 0.1GDS point gummed paper and 0.08 electric insulation crimped paper is bonding forms, the two ends of soft corner-ring (3) are turned up protruding, and 0.08 electric insulation crimped paper covers the both ends of the surface of high-tension coil (4).