CN2906855Y

CN2906855Y - Non-circular winding composite structure for transformer

Info

Publication number: CN2906855Y
Application number: CN 200620091001
Authority: CN
Inventors: 郭振岩; 郑国培; 董振华; 刘忠
Original assignee: SHENYANG TRANSFORMER RESEARCH INSTITUTE Co Ltd
Current assignee: Shenyang Transformer Research Institute Co., Ltd.
Priority date: 2006-05-26
Filing date: 2006-05-26
Publication date: 2007-05-30
Anticipated expiration: 2016-05-26

Abstract

The utility model discloses a non-circular winding combined structure for transformers. A whole body is formed by a plurality of windings in way of uniform winding or separate winding, a contraction band is arranged on the inside of an inner winding, the outside of an outer winding and the end face of an end insulation, and a whole body, which is formed by the contraction band and all windings of the phase, is assembled directly on a core of the transformer; an auxiliary contraction band, which is wound parallel to the windings, is also arranged on the outer layer of the winding wound by the contraction band. The utility model has the advantages of simple structure, low cost and high short circuit resistance ability.

Description

Transformer is with non-circular winding combining structure

Technical field

The utility model relates to a kind of winding construction of transformer ' s type equipment, and specifically a kind of transformer is with non-circular winding combining structure.

Background technology

At present, in the design and manufacturing of transformer ' s type product, based on round-shaped winding, but development and application along with new material, new technology, the winding of some non-circular shape is used gradually, and non-circular mechanical Strength for Winding, especially anti-short circuit capability are compared the very big gap of existence with circular winding, so must take measures on overall structure.As shown in Figure 1, transformer is when being short-circuited, and inboard winding is subjected to inside pressure F1, and outside winding is subjected to outside tensile force f 2.Mainly be to utilize insulating cylinder or other stretching devices in the prior art with stretching between stretching, outside winding or the outside winding between inboard winding and the iron core, or position stretching between the outside winding at device body two ends and housing, rather than in every phase winding, take measures, so not only to consider the matching problem between each phase winding, also make whole device body complicated, the consumption of effective material is increased, increased manufacturing cost.

The utility model content

For solving the matching problem between above-mentioned each phase winding, the purpose of this utility model is to provide a kind of strong transformer of mechanical strength and anti-short circuit capability that improves with non-circular winding combining structure.

For achieving the above object, the technical solution adopted in the utility model is:

Winding through system around or be assembled into one after the coiling respectively, in the outside of the inboard of interior winding, outer winding and end insulation end face winding contraction bands, this contraction bands with this mutually all windings become as a whole, directly be assembled in transformer fe in the heart.

Described contraction bands is a plurality of, is located at the yielding weakness of winding respectively; The skin of the winding that holds through contraction bands, also be provided with and wind the line parallel ring around auxiliary contraction bands.

The utlity model has following beneficial effect and advantage:

1. simple in structure, cost is low.It is fastening that the utility model adopts contraction bands that winding is carried out, and cancelled insulating cylinder and stretching device, simplified machine body structure, and reduced production cost;

2. anti-short circuit capability is strong.It is fastening that the utility model adopts contraction bands that winding is carried out, and makes winding become an organic whole, and the convergent force by contraction bands comes the opposite power of winding direction inside and outside the balance, thereby improved the anti-short circuit capability of winding.

Description of drawings

Fig. 1 is the stressed schematic diagram of winding in the prior art;

Fig. 2 is the utility model structural representation.

Embodiment

Embodiment 1

As shown in Figure 2, the utility model is example with the amorphous alloy transformer, because this type transformer is as iron core with amorphous alloy material, the winding section is generally made rectangle, all rectangle windings system on the coil winding machine around or after coiling assembling is finished respectively, strengthen at every phase winding mechanical strength weakness, promptly hold and the contraction bands 3 of the approximate vertical that winds the line at the position (being generally the central region of the rectangle length of side) that winding need be strengthened, in the present embodiment, the reinforcement mode at position that every phase winding need be strengthened by interior winding inboard (or outer winding outside) insulate through the upper end (or lower end insulation), the outer winding outside (or interior winding inboard), lower end insulation (or upper end insulation) holds a week around the inboard to interior again, hold direction and initial position is not limit, quantity optionally is reinforced the concrete size at position and decides, two long limits at the rectangle winding respectively hold 3 groups of contraction bandses 3, two minor faces at the rectangle winding respectively hold 2 groups of contraction bandses 3, it is 0.2 * 50 semi-drying expoxy glass adhesive tape that every group of contraction bands 3 adopts thickness and width specifications, every group holds thickness continuously is about 2mm, this contraction bands drying can be solidificated on the winding after handling, and has a convergent force, make every phase winding (the interior winding 1 and the outer winding 2 that comprise this phase) become organic whole, be assembled in transformer fe more in the heart, improved the mechanical strength of Transformer Winding.

Embodiment 2

Be with the difference of embodiment 1, outermost layer at every winding that holds through contraction bands 3, also be provided with and wind the line parallel ring around auxiliary contraction bands, auxiliary contraction bands also adopts semi-drying expoxy glass adhesive tape in the present embodiment, its effect is that locking is assisted in the coiling of every phase winding, has further improved the mechanical strength of transformer.

Claims

1. a transformer is with non-circular winding combining structure, winding through the system around or be assembled into one after the coiling respectively, it is characterized in that: in the inboard of interior winding (1), the outside of outer winding (2) and end insulation end face winding contraction bands (3), this contraction bands (3) with this mutually all windings become as a whole, directly be assembled in transformer fe in the heart.

By the described transformer of claim 1 with non-circular winding combining structure, it is characterized in that: described contraction bands (3) is a plurality of, is located at the yielding weakness of winding respectively.

By the described transformer of claim 1 with non-circular winding combining structure, it is characterized in that: the skin of the winding that holds through contraction bands (3), also be provided with and wind the line parallel ring around auxiliary contraction bands.

By claim 1 or 3 described transformers with non-circular winding combining structure, it is characterized in that: described contraction bands (3) and to assist contraction bands be semi-drying expoxy glass adhesive tape.