The novel dry-type transformer high-tension coil of sealing
Technical field
The utility model relates to the high-tension coil that a kind of three-phase is sealed dry-type transformer, belongs to electrical equipment technical field.
Background technology
Traditional three-phase is sealed the high-tension coil of dry-type transformer and is sealed by poured with epoxy resin usually, and huge equipment and mold investment, the technical matters complexity of this product needed, the production cycle is long, manufacturing cost is high.
Summary of the invention
The purpose of this utility model is: to be to make conventional equipment and big, the complicated and restive deficiency of pouring technology of mould investment when sealing the dry-type transformer high-tension coil in order overcoming, to provide a kind of new structure three-phase to seal the high-tension coil of dry-type transformer.
The utility model is realized by following scheme: coil adopts cylinder mode more than two sections, and on insulating cylinder coiling electromagnetic wire and layer insulation, the intersegmental section insulation that is provided with, the coil two ends all are provided with overhang insulation, the coil outer wall is provided with external insulation, constitutes the coil encapsulated member by insulating cylinder, overhang insulation and external insulation.
Insulating cylinder described in the utility model is prefabricated insulating cylinder or, winding formation wrapped with insulating material.
Layer insulation described in the utility model and overhang insulation adopt electric insulation adhesive tape or the coiling of preimpregnation insulating tape to form.
The binding post and the tap terminals of coil described in the utility model are drawn by wiring screw rod, and are fixed by the some bearings of wiring, and bearing is fastened on wiring screw rod on the prefabricated panel box by the embedded component screw thread.
Panel described in the utility model is prefabricated panel box.
The utility model is simple in structure, cost is low, easy and simple to handle, mechanical strength and electrical strength and poured with epoxy resin are sealed quite, can save expensive poured with epoxy resin equipment and casting mold, is convenient to after the life-span decompose and reclaims.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the vertical view of the utility model Fig. 1;
Fig. 3 is the upward view of the utility model Fig. 2.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is elaborated.
Referring to Fig. 1-3, present embodiment is made of insulating cylinder 1, overhang insulation 2, electromagnetic wire and layer insulation 3, section insulation 4, external insulation 5, wiring screw rod 6, prefabricated panel box 7 and some prefabricated wiring bearings 8.Insulating cylinder 1 is sleeved on the high-tension coil winding former, the wrapped or winding formation with insulating material.Coil adopts four cylindrical section formula structures, i.e. 1 coiling electromagnetic wire and layer insulation 3 on insulating cylinder, the intersegmental section insulation 4 that is provided with.Section insulation 4 adopts electric insulation adhesive tape or the coiling of preimpregnation insulating tape to form, to reduce interlayer and intersegmental voltage.The coil two ends all are provided with overhang insulation 2, adopt electric insulation adhesive tape or the coiling of preimpregnation insulating tape to form.The coil outer wall is sealed with insulating cylinder 1, the overhang insulation 2 common coils that form by electric insulation adhesive tape or preimpregnation insulating tape coiling formation external insulation 5.The binding post of coil and tap terminals are drawn by wiring screw rod 6, and fixing by wiring bearing 8, and bearing 8 is fastened on wiring screw rod on the prefabricated panel box 7 by the embedded component screw thread.
Manufacture craft of the present utility model is: suit insulating cylinder or wrapped or twine to form insulating cylinder 1 with insulating material on the high-tension coil winding former, 1 coiling electromagnetic wire and layer insulation 3 on insulating cylinder again, coil adopts the multistage cylinder mode reducing interlayer and intersegmental voltage, intersegmental 4 and overhang insulation 2 adopt electric insulation adhesive tapes or the coiling of preimpregnation insulating tape to form.Form coil external insulation 5 by electric insulation adhesive tape or the coiling of preimpregnation insulating tape, seal, carry out coil again and solidify with insulating cylinder 1, the overhang insulation 2 common coils that form.Coil solidifies back welding wiring screw rod 6, and wrap up and insulation processing lead-in wire the back, and prefabricated panel box 7 and wiring bearing 8 are installed again.