CN201230238Y

CN201230238Y - Stator winding wire for one-time molding three layers of thin film package wind power generator

Info

Publication number: CN201230238Y
Application number: CNU2008200401083U
Authority: CN
Inventors: 张根洪; 杨勇; 陆国达; 缪丽华
Original assignee: Jiangsu Shengang Electromagnetic Wire Co Ltd
Current assignee: Jiangsu Shengang Electromagnetic Wire Co Ltd
Priority date: 2008-06-27
Filing date: 2008-06-27
Publication date: 2009-04-29
Anticipated expiration: 2018-06-27

Abstract

The utility model relates to an one-time forming three-layer insulation film flat package wind power generator stator winding wire which is the winding wire mainly used for large-sized wind power generator stator windings, the winding wire comprises copper flat wires (1) and is characterized in that a polyester film belt inner layer (2), a mica belt middle layer (3) and a mica belt outer layer (4) are flatly packed on the surface of the copper flat wires (1) sequentially from inside to outside; and the polyester film belt inner layer (2), the mica belt middle layer (3) and the mica belt outer layer (4) are formed with one-time flat package forming. The utility model has great package winding distance, few piled slots and no step on wire surface. When voltage between circles of a plurality of windings is played, the gap between the winding wires is small, the contact area is great, and the voltage-resistance performance among the circles is obviously enhanced. The size of the cross section of the winding winded by the same number of the winding wires, when a generator is designed, the design size of a generator stator wire slot can be reduced from a certain degree, and so the appearance size of the generator is reduced.

Description

The flat bag of the three-layer insulated film of one-shot forming aerogenerator stator winding wire

Technical field

The utility model relates to a kind of aerogenerator stator winding wire.Be mainly used in the winding wire of the above large-scale wind driven generator stator coil of 1.25MW, also can be used as the coil windings line in the dry operational environments such as dry-type transformer.Belong to technical field of wind power generator.

Background technology

Before the utility model is made, be used for the winding wire of aerogenerator stator coil in the past, generally adopt the wrapped mode of double-layer films 1/2 stacked package.This wrapped mode exists that lay of lapping is overstocked, lap seam too much, wire surface has deficiencies such as step.This deficiency can cause following defective:

1, when beating the turn-to-turn voltage of many coils, the slit is big between winding wire and winding wire, and contact area is little, and the withstand voltage properties of turn-to-turn is low.

2, the cross sectional dimensions of winding wire after turning to coil of same radical is bigger, during the design generator, has strengthened the design size of generator unit stator wire casing to a certain extent, thereby has strengthened the overall dimensions of generator.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provides that a kind of lay of lapping is big under equal insulation thickness, lap seam is few, the flat bag of the three-layer insulated film of the wheel chair access one-shot forming of wire surface aerogenerator stator winding wire.

The purpose of this utility model is achieved in that the flat bag of the three-layer insulated film of a kind of one-shot forming aerogenerator stator winding wire, comprise copper strap wire, be characterized in: flat successively from the inside to the outside mylar tape internal layer, mica tape intermediate layer and the mica tape skin of being surrounded by on described copper strap wire surface, the outer three layers of once flat wrap molding of described mylar tape internal layer, mica tape intermediate layer and mica tape.

The utility model adopts the one-shot forming of the flat bag of three-layer insulated film, has solved many deficiencies that double-layer films 1/2 stacked package in the past exists well, and its advantage is:

1, owing to adopt the flat bag of three-layer insulated film, its lay of lapping is big, under the situation of same length, lacks 1/3 than the lap seam of double-layer films 1/2 stacked package, and wire surface does not have tangible step, surfacing.When beating the turn-to-turn voltage of many coils, the slit is little between winding wire and winding wire, and contact area is big, and the withstand voltage properties of turn-to-turn obviously improves.

2, the operational environment of wind-driven generator has determined little lighter of the generator volume of same power.The flat bag of the three-layer insulated film that the utility model adopts is compared with 1/2 film stacked package in the past, because wire surface is smooth, the cross sectional dimensions of winding wire after turning to coil of same radical is smaller, during the design generator, also can dwindle the design size of generator unit stator wire casing to a certain extent, thereby reduce the overall dimensions of generator.

To sum up, no matter the one-time formed winding wire of the flat bag of the three-layer insulated film of the utility model is at electrical property, still on the portability and saving motor manufacturing cost of quality stability, product, all very big advantage is arranged than two-layer film 1/2 stacked package.

Description of drawings

Fig. 1 is the structural representation of the flat bag of the three-layer insulated film of the utility model one-shot forming aerogenerator stator winding wire.

Among the figure: copper strap wire 1, mylar tape internal layer 2, mica tape intermediate layer 3, mica tape skin 4.

Embodiment

Referring to Fig. 1, the flat bag of the three-layer insulated film of the one-shot forming that the utility model relates to aerogenerator stator winding wire, comprise copper strap wire 1, flat successively from the inside to the outside mylar tape internal layer 2, mica tape intermediate layer 3 and the mica tape skin 4 of being surrounded by on described copper strap wire 1 surface, the outer 4 three layers of once flat wrap molding of described mylar tape internal layer 2, mica tape intermediate layer 3 and mica tape.

Claims

1, the flat bag of the three-layer insulated film of a kind of one-shot forming aerogenerator stator winding wire, comprise copper strap wire (1), it is characterized in that: flat successively from the inside to the outside mylar tape internal layer (2), mica tape intermediate layer (3) and the mica tape skin (4), described mylar tape internal layer (2), mica tape intermediate layer (3) and (4) three layers of once flat wrap molding of mica tape skin of being surrounded by on described copper strap wire (1) surface.