A kind of three dimensional wound core open-type transformer loop construction
Technical field
The utility model relates to field transformer, is specifically related to a kind of three dimensional wound core open-type transformer loop construction.
Background technology
Open wide dry-type transformer iron at present and be generally laminated core, its loop construction pattern is generally foil, wire-wound laminar or continous way, the coil of different structure type can be selected according to electric pressure difference, general electric pressure 3kV and select continous way above, below 3kV selects foil or wire-wound laminar, and coil is divided into interior loop and exterior loop, and inner-outer coil separates coiling, be sleeved on after coiling completes on core limb, between inner-outer coil, use stay stretching.Wherein continuous winding is made up of multiple line cake 7, as Fig. 3, line cake 7 is formed around arrangement from inside to outside by wire, the air flue 8 for dispelling the heat is remained with between line cake 7, the shortcoming of this kind of structure is connection wire 9 between two line cakes 7 need be moved to next line cake 7 inside by the outside of a upper line cake 7, such connection wire 9 occupies the air flue 8 between line cake 7, transformer is caused to dispel the heat bad, connect wire 9 thickness larger simultaneously, corresponding air flue 8 is also larger, increase volume of transformer, cause the cost of transformer to increase.
Utility model content
In order to solve existing continuous winding line cake between connection wire ecto-entad oblique pull, take air flue, cause the bad problem increased with cost of transformer heat radiation, the purpose of this utility model is to provide a kind of three dimensional wound core open-type transformer loop construction, the forward and reverse arrangement of adjacent lines cake, the connection wire between cake and cake does not occupy the air flue between line cake, does not affect heat radiation, air flue can reduce arbitrarily simultaneously, reduces the cost of transformer.
The technical scheme that the utility model adopts is:
A kind of three dimensional wound core open-type transformer loop construction, comprise interior loop and the exterior loop of concentric coiling, air duct is provided with between interior loop and exterior loop, described interior loop and/or exterior loop are by continuous winding that is single or multiple conducting wires coiling, described continuous winding comprises multiple line cake stacked, be provided with air flue between line cake, the orientation of the wire of adjacent lines cake is contrary, and the connection wire between adjacent lines cake is arranged on medial surface or the lateral surface of continuous winding.
As the further improvement of technique scheme, between described interior loop and exterior loop, be provided with insulating cylinder.
As the further improvement of technique scheme, described insulating cylinder is provided with stay, described exterior loop is around stay coiling.
As the further improvement of technique scheme, described stay is provided with cushion block, between the online cake of described cushion block.
As the further improvement of technique scheme, described interior loop and/or exterior loop are by the foil coil of paillon foil coiling.Foil coil is formed by paillon foil coiling, can monolithic coiling, also can the above lap wound of two panels, and first and last is lifted one's head and to be drawn with lug plate.
As the further improvement of technique scheme, described interior loop and/or exterior loop are the wire-wound layer coils by single or multiple conducting wires coiling.Wire-wound layer coil is formed by single or multiple conducting wires coiling, generally can the two-layer or multilayer of coiling, multiple conducting wires can and around and lap wound, first and last is lifted one's head and to be drawn with coiling wire.
The beneficial effects of the utility model are:
Three dimensional wound core open-type transformer loop construction of the present utility model, air duct is left between interior loop and exterior loop, perfect heat-dissipating, continuous winding adopts positive and negative cake structure, the forward and reverse arrangement of adjacent lines cake, the connection wire between cake and cake does not occupy the air flue between line cake, does not affect heat radiation, air flue can reduce arbitrarily simultaneously, reduces the cost of transformer.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of this patent three dimensional wound core open-type transformer coil;
Fig. 2 is this patent three dimensional wound core open-type transformer continuous winding coiling expanded view;
Fig. 3 is existing open-type transformer continuous winding coiling expanded view.
Embodiment
With reference to Fig. 1, the preferred embodiment that the utility model provides, a kind of three dimensional wound core opens wide dry transformer coil structure, be made up of interior loop 1 and exterior loop 2, interior loop 1 can arrange by various ways according to electric pressure is different with exterior loop 2, namely interior loop 1 can select foil, wire-wound laminar, continous way, and exterior loop 2 can select foil, wire-wound laminar, continous way.The concentric coiling of inside and outside coil, first around core limb coiling interior loop 1, then around exterior loop 2, leaves air duct 3 between interior loop 1 and exterior loop 2.
In the present embodiment, exterior loop 2 is continuous windings, comprise multiple line cake 7 stacked by wire coiling, exterior loop 2 inside is provided with insulating cylinder 4, insulating cylinder 4 is provided with stay 5, and line cake 7 is around on stay 5, and stay 5 is provided with cushion block 6, cushion block 6 is placed between line cake 7 and line cake 7, forms the air flue 8 between line cake 7 and line cake 7.
In the utility model, continuous winding adopts positive and negative cake structure, and first line cake 7 is anti-cake, and wire arranges from outside to inside, and second line cake 7 is positive cake, and wire arranges from inside to outside, and the 3rd line cake continues as anti-cake, so analogizes.Connection wire 9 between adjacent lines cake 7 is arranged on continuous winding medial surface or lateral surface, does not occupy the space of the air flue 8 between line cake 7.Continuous winding coiling expanded view of the present utility model if Fig. 2, this figure are for four line cakes 7, solid conductor coiling, be divided into 58 circles, wherein first and third cake is 15 circles, and two, four cakes are 14 circles, discontented circle pad section is leveled up, and pad section can online in the middle part of cake 7, also can line cake 7 inner surface and outer surface.
Three dimensional wound core open-type transformer loop construction of the present utility model, air duct 3 is left between interior loop 1 and exterior loop 2, perfect heat-dissipating, continuous winding adopts positive and negative cake structure, the forward and reverse arrangement of adjacent lines cake 7, the connection wire 9 between cake and cake does not occupy the air flue 8 between line cake 7, does not affect heat radiation, air flue 8 can reduce arbitrarily simultaneously, reduces the cost of transformer.
Above concrete structure and sized data illustrate preferred embodiment of the present utility model, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.