CN201478066U

CN201478066U - Transformer coil structure

Info

Publication number: CN201478066U
Application number: CN2009202257005U
Authority: CN
Inventors: 边炳传; 尚振龙
Original assignee: Tai'an Longchangguang Transformer Co Ltd
Current assignee: Tai'an Longchangguang Transformer Co Ltd
Priority date: 2009-09-09
Filing date: 2009-09-09
Publication date: 2010-05-19
Anticipated expiration: 2019-09-09

Abstract

The utility model relates to the manufacturing technical field of a transformer, in particular to a small and medium-sized transformer coil structure under 35kV, comprising a primary coil (1) and a secondary coil (2) both formed by a plurality of wire turns which are connected in series and distributed in the barrel shape; at least one layer of secondary coil (2) is provided; an insulating paper layer is arranged between layers of coils; the beginning end wire turn of the secondary coil (2) is arranged at the outer side of the same end of the beginning end wire turn of the primary coil (1); in a multilayer secondary coil (2), the beginning end wire turn of the outer secondary coil (2) is arranged at the outer side of the same end of the beginning end wire turn of the adjacent inner secondary coil (2), and the tail end wire turn of each layer of coil is connected with the beginning end wire turn of the adjacent outer coil. The transformer coil structure has the characteristics of reasonable structure, safe and stable performance, small volume and low manufacturing cost.

Description

A kind of transformer coil structure

Technical field

The utility model relates to a kind of technical field of transformer manufacturing, the structure of the middle-size and small-size transformer coil that specifically a kind of 35Kv is following.

Background technology

Transformer is one of capital equipment in the high-tension power transmission and transformation equipment, and at present in 35 kilovolts of levels and following middle-size and small-size power transformer, high-tension coil mostly is the cylindrical layer winding structure.Every layer of cylindrical layer winding is made up of multilayer as tubular, and every layer is to form one deck by a plurality of wire turn arranged in series.The multi-layer cylinder formula is to be rearranged by several such concentric layers, usually, the top wire turn of each outer coil layer all is arranged on the outside with respect to the not end line circle of its inner coil layer, just around the not end line circle of intact inner coil layer then in its outside around the top of outer coil wire turn, the wire turn of outer coil is continuously to the top of inner coil wire turn direction arranged in series then.General double-deck and four layers of general low-voltage coil that is used as 400 volts of cylindrical layer windings; Multi-layer cylinder formula coil is generally as 3 kilovolts and above low pressure or high-tension coil.For as 3 kilovolts and above low pressure or high pressure multi-layer cylinder formula coil, the interlayer of conventional coil all is placed with the layer insulation of being made up of many insulating papers, and the number of plies of insulating paper depends on the maximum operating voltage between two-layer, two interlayer maximum working voltage (V) U _Cmax=2w _cE _tW wherein _cBe every layer of number of turn; e _tBe every circle voltage (V), operating voltage is bigger, and in the coil of this structure, the insulating paper number of plies that interlayer is placed is more, and volume is bigger, and material requested is many, and manufacturing cost is higher.

Summary of the invention

In order to overcome above-mentioned defective, it is a kind of rational in infrastructure that the utility model provides, stable performance, and volume is little, the transformer coil structure of low cost of manufacture.

The utility model is achieved in that a kind of transformer coil structure, comprise primary coil and secondary coil, primary coil and secondary coil form round barrel shape by a plurality of wire turn arranged in series, secondary coil is placed in the primary coil outside, secondary coil is at least one deck, between every layer line circle, be provided with insulating paper layer, it is characterized in that: the top wire turn of described secondary coil is arranged on the outside of the same end of top wire turn of primary coil, in the secondary coil of multilayer, the top wire turn of its outer field secondary coil is arranged on the outside of the same end of top wire turn of the secondary coil of adjacent inner layer, and the top wire turn that the end turns of every layer line circle is adjacent outer coil connects.

The utility model is arranged on the top wire turn of original structure ectomesoderm coil in the outside of the not end line circle of adjacent inner layer coil, the top wire turn of changing into outer coil is arranged on the outside of the same end of top wire turn of adjacent inner layer coil, ceiling voltage in the structure after the improvement between every layer reduces, because the lead of the not end line circle of inner coil is gone back to position, top coiling outer coil again, make the maximum voltage between ectonexine coil two-layer become w _cE _t, promptly every layer of circle taken advantage of every circle voltage, is at half than the maximum operating voltage of original structure, in the coil of this structure, the insulating paper number of plies that interlayer is placed is less, smaller volume, employed material reduces, and manufacturing cost reduces, and the performance safety and stability of transformer.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Embodiment

Now in conjunction with the accompanying drawings this practicality is further described, Fig. 1 is a kind of embodiment of the present utility model, comprises primary coil 1 and secondary coil 2, and primary coil 1 and secondary coil 2 form round barrel shape by a plurality of wire turn arranged in series.Secondary coil 2 is placed in the inner coil outside, and secondary coil 2 is at least one deck, is provided with insulating paper layer between every layer line circle.The top wire turn of secondary coil 2 is arranged on the outside of the same end of top wire turn of primary coil 1 in the utility model.When secondary coil 2 was multilayer, in the present embodiment, secondary coil 2 was three layers, and the top wire turn of outer field secondary coil 2 is arranged on the outside of the same end of top wire turn of the secondary coil 2 of adjacent inner layer.The top wire turn that the not end line circle of every layer line circle is adjacent outer coil connects, and promptly the not end line circle of primary coil 1 is connected with the top wire turn of adjacent outer field secondary coil 2; The top wire turn that the not end line circle of the secondary coil 2 of internal layer is adjacent outer field secondary coil 2 is connected.

The utlity model has rational in infrastructurely, performance safety is stable, and volume is little, the characteristics such as low cost of manufacture.

Claims

1. transformer coil structure, comprise primary coil (1) and secondary coil (2), primary coil (1) and secondary coil (2) form round barrel shape by a plurality of wire turn arranged in series, secondary coil (2) is placed in primary coil (1) outside, secondary coil (2) is at least one deck, between every layer line circle, be provided with insulating paper layer, it is characterized in that: the top wire turn of described secondary coil (2) is arranged on the outside of the same end of top wire turn of primary coil (1), in the secondary coil of multilayer (2), the top wire turn of its outer field secondary coil (2) is arranged on the outside of the same end of top wire turn of the secondary coil (2) of adjacent inner layer, and the top wire turn that the end turns of every layer line circle is adjacent outer coil connects.