CN215644023U

CN215644023U - Amorphous alloy iron core phase shift rectification frequency conversion speed regulation transformer

Info

Publication number: CN215644023U
Application number: CN202121549618.5U
Authority: CN
Inventors: 金承祥; 鄂春香
Original assignee: Clp Jiangsu Transformer Manufacturing Co ltd
Current assignee: Clp Jiangsu Transformer Manufacturing Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2022-01-25
Anticipated expiration: 2031-07-08

Abstract

The utility model discloses a phase-shifting rectification frequency-conversion speed-regulation transformer with an amorphous alloy iron core, which comprises a transformer iron core, wherein the transformer iron core is formed by coiling an amorphous alloy strip, the transformer iron core comprises an upper yoke part and a lower yoke part, three coil winding columns are arranged between the upper yoke part and the lower yoke part, the cross sections of the coil winding columns are rectangular, gaps are formed between every two three coil winding columns, a high-voltage coil, a first low-voltage phase-shifting coil and a second low-voltage phase-shifting coil are sequentially arranged on the three coil winding columns from left to right, the cross sections of the high-voltage coil, the first low-voltage phase-shifting coil and the second low-voltage phase-shifting coil are also rectangular, lower clamping pieces are arranged below the high-voltage coil, the first low-voltage phase-shifting coil and the second low-voltage phase-shifting coil, insulating supporting pieces are arranged in the gaps of the coil winding columns, and the insulating supporting pieces are arranged at the gaps above the coils and the gaps.

Description

Amorphous alloy iron core phase shift rectification frequency conversion speed regulation transformer

Technical Field

The utility model relates to a phase-shifting rectification frequency-conversion speed-regulation transformer with an amorphous alloy iron core.

Background

The iron core of the transformer for phase-shifting rectification frequency-conversion speed regulation with the voltage of 35kV or below and the capacity of 10000kVA or below is formed by laminating cold-rolled silicon steel sheets, the iron core is of a multi-stage iron core lamination level approximate to a circle, the high-voltage winding and the low-voltage winding of the transformer are all of circular sections, the production process of the iron core is complex, the silicon steel sheets used by the iron core need to be cut into strip-shaped materials with a plurality of widths, the material specification is increased, the utilization rate of the materials is reduced, and the manufacturing cost is increased. In addition, because the load of the transformer for phase-shifting rectification variable-frequency speed regulation is equipment with power electronic variable-current property, the transformer needs to bear a large amount of higher harmonics from the load side, the higher harmonics can cause the loss in the transformer iron core to increase, the iron core is overheated, and the normal operation of the transformer can be affected seriously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art and provides a transformer for amorphous alloy iron core phase-shifting rectification variable-frequency speed regulation.

The utility model provides an amorphous alloy iron core is shifted looks rectification variable frequency speed regulation and is used transformer, includes transformer core, transformer core is formed by the book of amorphous alloy strip, and transformer core includes upper yoke portion and lower yoke portion, is equipped with three coil between upper yoke portion and the lower yoke portion and winds the post, the coil cross-section of winding the post be the rectangle, three coil is equipped with the clearance between two liang of post, three coil is around being equipped with high-voltage coil, first low-voltage phase shift coil and second low-voltage phase shift coil from a left side to the right side on the post in proper order, high-voltage coil, first low-voltage phase shift coil and second low-voltage phase shift coil's cross-section also be the rectangle, the clamp is down in the below of high-voltage coil, first low-voltage phase shift coil and second low-voltage phase shift coil, is equipped with insulating support piece in the clearance of coil winding post, insulating support piece locates the crack department above coil and the clearance.

As a further improvement, the electromagnetic wires of the high-voltage coil, the first low-voltage phase-shifting coil and the second low-voltage phase-shifting coil are oxygen-free copper wires.

As a further improvement, the outer surfaces of the high-voltage coil, the first low-voltage phase-shifting coil and the second low-voltage phase-shifting coil are wound with high-strength tightening belts.

The improved transformer comprises a transformer body and a box cover, wherein an insulating cushion block is arranged below the transformer body, and the insulating cushion block is made of laminated wood and laminated paper board.

As a further improvement, the connection between the instrument body and the box cover adopts a rigid buffering structure.

Has the advantages that:

after the amorphous alloy strip is used as the iron core of the transformer for phase-shifting rectification, frequency conversion and speed regulation, the specification of the strip can be reduced in the production and manufacturing process, and the purchase and management are convenient; under the same working condition, the no-load loss of the amorphous alloy iron core phase-shifting rectifying variable-frequency speed regulating transformer is only one third of that of a common silicon steel sheet iron core, the energy-saving effect is obvious, the no-load current of the amorphous alloy iron core is only one tenth of that of the common silicon steel sheet, the reactive power occupation ratio is small, and therefore, the operation efficiency of the amorphous alloy iron core phase-shifting rectifying variable-frequency speed regulating transformer is higher; the transformer for phase-shifting rectification frequency conversion speed regulation, which uses the amorphous alloy strip as the iron core, has stronger capability of bearing high-order harmonic current at the load side, and can avoid safety accidents caused by overheating inside the iron core; the iron core and the coil with the rectangular structure improve the space utilization rate of the transformer, and the occupied area of the transformer can be saved.

Drawings

FIG. 1 is a schematic structural diagram of a modified transformer core;

FIG. 2 is a cross-sectional view of the improved transformer core;

FIG. 3 is a schematic structural view of a transformer core before modification;

FIG. 4 is a cross-sectional view of a transformer core prior to modification;

1. the transformer comprises a transformer iron core 11, an upper yoke part 12, a lower yoke part 13, a coil winding column 2, a high-voltage coil 3, a first low-voltage coil 4, a second low-voltage coil 5, an insulating support part 6 and a lower clamping piece.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

As shown in fig. 1-2, a transformer for amorphous alloy iron core phase-shifting rectification frequency-conversion speed regulation comprises a transformer iron core 1, an upper yoke 11, a lower yoke 12, a coil winding column 13, a high-voltage coil 2, a first low-voltage coil 3, a second low-voltage coil 4, an insulating support 5 and a lower clamping piece 6.

A transformer for amorphous alloy iron core phase-shifting rectification frequency conversion speed regulation comprises a transformer iron core 1, wherein the transformer iron core 1 is formed by coiling an amorphous alloy strip, the transformer iron core 1 comprises an upper yoke part 11 and a lower yoke part 12, three coil winding columns 13 are arranged between the upper yoke part 11 and the lower yoke part 12, the section of the coil winding column 13 is rectangular, a gap is arranged between every two of the three coil winding columns 13, the three coil winding columns 13 are sequentially provided with a high-voltage coil 2, a first low-voltage phase-shifting coil 3 and a second low-voltage phase-shifting coil 4 from left to right, the cross section of the high-voltage coil 2, the cross section of the first low-voltage phase-shifting coil 3 and the cross section of the second low-voltage phase-shifting coil 4 are also rectangular, a lower clamping piece 6 is arranged below the high-voltage coil 2, the cross section of the first low-voltage phase-shifting coil 3 and the cross section of the second low-voltage phase-shifting coil 4, an insulating support piece 5 is arranged in a gap of the coil winding column 13, and the insulating support piece 5 is arranged at a crack above the coil and the gap.

The electromagnetic wires of the high-voltage coil 2, the first low-voltage phase-shifting coil 3 and the second low-voltage phase-shifting coil 4 are oxygen-free copper wires.

Wherein, the outer surfaces of the high-voltage coil 2, the first low-voltage phase-shifting coil 3 and the second low-voltage phase-shifting coil 4 are wound with high-strength tightening belts.

The transformer comprises a transformer body and a box cover, wherein an insulating cushion block is arranged below the transformer body, and the insulating cushion block is made of laminated wood and laminated paper boards.

Wherein, the connection of the device body and the box cover adopts a rigid buffering structure.

The utility model relates to a transformer for phase-shifting rectification variable-frequency speed regulation of an amorphous alloy iron core, wherein the iron core of the transformer is coiled by an amorphous alloy strip, and the amorphous alloy strip is very thin and has the thickness only one tenth of that of a common silicon steel sheet, so that the loss of the amorphous alloy iron core is only about one third of that of the common silicon steel sheet at the working frequency of 50Hz, the no-load current can be reduced to one tenth of that of the common silicon steel sheet, and the running energy-saving effect of the transformer at the working frequency is obvious. In addition, the eddy current loss of the amorphous alloy strip caused by the high-frequency magnetic field is far lower than that of a common silicon steel sheet under high frequency, so that the advantage of low loss of the amorphous alloy strip is exerted under the condition of small running parts with high-order harmonics. The section of the amorphous alloy iron core is rectangular, and the coil matched with the amorphous alloy iron core is also rectangular, so that the rectangular iron core and coil structure improves the space utilization rate of the whole transformer, and the transformer is more compact; vertically erecting the lap joint of the yoke part on the produced amorphous alloy iron core, sleeving a high-voltage coil, sleeving a low-voltage phase shifting coil, placing the high-voltage coil and the low-voltage coil on a lower clamping piece, and using the lower clamping piece as a fixed support; because the amorphous alloy material can not bear pressure, the coil is required to be used as a framework to support the amorphous alloy iron core on the upper part, the insulating support for supporting the iron core is placed on the upper part between the two coils, the opened amorphous alloy upper yoke part is restored and closed and pressed on the insulating support part, and the assembly is completed after the clamping piece is installed.

The non-gold alloy iron core phase-shifting rectification frequency conversion speed regulation transformer reduces the specification of iron core materials, facilitates purchase and production management, is low in no-load loss and low in no-load current, improves the operation efficiency of the transformer, and saves the operation cost for users; the transformer iron core has stronger capability of bearing high-order harmonic current at the load side, thereby avoiding safety accidents caused by overheating inside the iron core and further improving the reliability of the transformer.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an amorphous alloy iron core is shifted looks rectification variable frequency speed regulation and is used transformer, its characterized in that, including transformer core, transformer core is formed by the book system of amorphous alloy strip, transformer core includes upper yoke portion and lower yoke portion, is equipped with three coil between upper yoke portion and the lower yoke portion and winds the post, the coil cross-section of winding the post be the rectangle, three coil is equipped with the clearance between two liang around the post, three coil is equipped with high-voltage coil, first low-voltage phase shift coil and second low-voltage phase shift coil from a left side to the right side on the post in proper order, high-voltage coil, first low-voltage phase shift coil and second low-voltage phase shift coil's cross-section also be the rectangle, the below of high-voltage coil, first low-voltage phase shift coil and second low-voltage phase shift coil is equipped with down the folder, be equipped with insulating support piece in the clearance of coil around the post, insulating support piece locates the crack department of coil and clearance top.

2. The transformer of claim 1, wherein the electromagnetic wires of the high voltage coil, the first low voltage phase shift coil and the second low voltage phase shift coil are oxygen-free copper wires.

3. The transformer of claim 1, wherein the high voltage winding, the first low voltage phase shifting winding and the second low voltage phase shifting winding are wound with high strength tightening tapes on their outer surfaces.

4. The transformer of claim 1, comprising a body and a cover, wherein the body has an insulating pad made of laminated wood or laminated paper.

5. The transformer of claim 4, wherein the connection between the body and the cover is a rigid buffer structure.