CN202230838U

CN202230838U - Reeled-core dry-type transformer

Info

Publication number: CN202230838U
Application number: CN2011202869583U
Authority: CN
Inventors: 邵龙; 潘怀美
Original assignee: SHANDONG LUNENG RIHE HOLDINGS CO LTD
Current assignee: SHANDONG LUNENG RIHE HOLDINGS CO LTD
Priority date: 2011-08-09
Filing date: 2011-08-09
Publication date: 2012-05-23
Anticipated expiration: 2021-08-09

Abstract

The utility model provides a reeled-core dry-type transformer, which belongs to the field of power equipment and structurally comprises an upper clamping piece and a high-low voltage lower clamping piece arranged on a base. An iron core and high-voltage and low-voltage windings wound on a core column are arranged between the upper clamping piece and the high-low voltage lower clamping piece; the upper clamping piece and the high-low voltage lower clamping piece are connected through U-shaped screws; the iron core adopts a reeled-core with an approximately round cross section; and the high-voltage winding adopts a continuous winding, the low-voltage winding adopts a low-voltage foil winding, an interlayer adopts a ceramic cushion block, coil supports adopt ceramic insulators, and the whole dry-type transformer adopts a vacuum impregnating structure. In the reeled-core dry-type transformer provided by the utility model, the iron core does not need to consume magnetize capacity of a seam, so that no airgap is in the magnetic circuit, exciting current is reduced greatly, idling current is small, and no-load loss is small; the reeled-core is a jointless whole, so that noise level is greatly lowered in running process and environment protection is achieved; and the reeled-core dry-type transformer fully utilizes the orientation property of silicon sheet, so as to eliminate the added loss resulted from the inconsistent orientation between the magnetic circuit and the silicon sheet.

Description

A kind of rolled iron core dry-type transformer

(1) technical field

The utility model relates to a kind of power equipment, specifically a kind of rolled iron core dry-type transformer.

(2) background technology

In recent years, dry-type transformer obtains swift and violent development in the whole nation, and it is simple in structure because of having, easy to maintenance, fire protection flame retarding, advantage such as dustproof, is widely used in the occasion that safe operation is had higher requirements.At present; The cast-type dry-type transformer is used more extensive, uses dry-type transformer the earliest though the dry-type transformer of SG type is exploitation, and the dry-type transformer of Yin Putong is moistureproof, anti-dust performance is poor; Its application is restricted; Along with the improvement of external high performance insulating material and manufacturing process, each item performance index of the dry-type transformer of SG type have all reached cast-type and have done the level that becomes, for its development has brought good development opportunity.

(3) summary of the invention

The technical assignment of the utility model is the deficiency to prior art, and a kind of rolled iron core dry-type transformer is provided.

The utility model solves the technical scheme that its technical problem adopted:

A kind of rolled iron core dry-type transformer; Comprise upper clamping piece and be located at the high-low pressure lower clamping piece on the base; Be provided with iron core and high pressure winding and low pressure winding on the core limb between upper clamping piece and the high-low pressure lower clamping piece, said upper clamping piece is connected through U type screw rod with the high-low pressure lower clamping piece, and iron core has adopted the volume of cross section sub-circular unshakable in one's determination; The high pressure winding adopt continous way winding, low pressure winding adopt low blocking around; Interlayer adopts ceramic cushion block, and coil support all adopts ceramic insulator, the overall vacuum impregnated structures.

Above-mentioned volume iron core is made up of two rectangle inner iron core and outer iron cores outside their arranged side by side, and the inner iron core cross section is protruding from outer inwardly semicircular in shape, and outer cross section unshakable in one's determination is the semicircular in shape convexity from inside to outside, and the volume that is combined into the cross section sub-circular is unshakable in one's determination.

A kind of rolled iron core dry-type transformer of the utility model compared with prior art, the beneficial effect that is produced is:

1) iron core need not to consume the magnetization capacity of seam, does not have air gap in the magnetic circuit, significantly reduces exciting curent, so no-load current is little, no-load loss.

2) the volume iron core self is a jointless integral body, and the noise level when operation reduces greatly, helps protecting environment.

3) Wound iron-core transformer has made full use of the orientation of silicon steel sheet, has eliminated because of magnetic circuit and the inconsistent loss that increases of silicon steel sheet orientation.

(4) description of drawings

Accompanying drawing 1 is the main TV structure sketch map of the utility model;

Accompanying drawing 2 is the plan structure sketch map of Fig. 1;

Accompanying drawing 3 is the right TV structure sketch map of Fig. 1;

Accompanying drawing 4 is a structural representation unshakable in one's determination among Fig. 1.

Among the figure, 1, arm-tie and mounting, 2, iron core, 2-1, inner iron core, 2-2, outer unshakable in one's determination, 3, base; 4, high-low pressure lower clamping piece, 5, lower cushion block, 6, the high pressure winding, 7, the low pressure winding, 8, go up cushion block, 9, nameplate; 10, upper clamping piece, 11, the steel drawstring, 12, U type screw rod, 13, b phase connection plate, 14, a phase connection plate; 15, high-voltage connection terminal, 16, insulator, 17, the folder insulation, 18, the low-voltage lead clamping plate, 19, the high-voltage tap plate.

(5) embodiment

Explanation at length below below in conjunction with accompanying drawing 1-4 a kind of rolled iron core dry-type transformer of the utility model being done.

Shown in accompanying drawing 1-3; A kind of rolled iron core dry-type transformer of the utility model, its structure comprise upper clamping piece 10 and be located at the high-low pressure lower clamping piece 4 on the base 3, is provided with unshakable in one's determination 2 and high pressure winding 6 and low pressure winding 7 on the core limb between upper clamping piece 10 and the high-low pressure lower clamping piece 4; Said upper clamping piece 10 is connected through U type screw rod 12 with high-low pressure lower clamping piece 4; Unshakable in one's determination 2 have adopted the volume of cross section sub-circular unshakable in one's determination, high pressure winding 6 adopt continous way windings, low pressure winding 7 adopt low blocking around, interlayer adopts ceramic cushion block; Coil support all adopts ceramic insulator 16, the overall vacuum impregnated structures.

Shown in accompanying drawing 4; Iron core 2 is made up of two rectangle inner iron core 2-1 and 2-2 outer unshakable in one's determination outside their arranged side by side; Inner iron core 2-1 cross section is protruding from outer inwardly semicircular in shape, and outer 2-2 cross section unshakable in one's determination semicircular in shape from inside to outside is protruding, and the volume that is combined into the cross section sub-circular is unshakable in one's determination.

Its processing and fabricating of a kind of rolled iron core dry-type transformer of the utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.

Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1. rolled iron core dry-type transformer; Comprise upper clamping piece (10) and be located at the high-low pressure lower clamping piece (4) on the base (3); Be provided with iron core (2) and high pressure winding (6) and low pressure winding (7) on the core limb between upper clamping piece (10) and the high-low pressure lower clamping piece (4), said upper clamping piece (10) is connected through U type screw rod with high-low pressure lower clamping piece (4), it is characterized in that: (2) unshakable in one's determination have adopted the volume of cross section sub-circular unshakable in one's determination; High pressure winding (6) adopt continous way winding, low pressure winding (7) adopt low blocking around; Interlayer adopts ceramic cushion block, and coil support all adopts ceramic insulator (16), overall vacuum impregnated structures.

2. a kind of rolled iron core dry-type transformer according to claim 1; It is characterized in that: volume is unshakable in one's determination to be made up of two rectangle inner iron core (2-1) and outer iron cores (2-2) outside their arranged side by side; Inner iron core (2-1) cross section is protruding from outer inwardly semicircular in shape; Semicircular in shape is protruding from inside to outside for outer (2-2) cross section unshakable in one's determination, and the volume that is combined into the cross section sub-circular is unshakable in one's determination.