CN201698880U

CN201698880U - Shell transformer regulating winding

Info

Publication number: CN201698880U
Application number: CN2010201888239U
Authority: CN
Inventors: 孙洁; 徐晓毅
Original assignee: Guiyang Xinxing Transformer Co Ltd
Current assignee: Guiyang Xinxing Transformer Co Ltd
Priority date: 2010-05-13
Filing date: 2010-05-13
Publication date: 2011-01-05
Anticipated expiration: 2020-05-13

Abstract

The utility model discloses a shell transformer regulating winding which belongs to a transformer winding and aims at providing a shell transformer regulating winding capable of reducing short circuit impact force. The shell transformer regulating winding includes a winding body which is formed by twisting electromagnetic wires on an iron core in an annular cake structure and provided with N taps; the winding body (1) is formed by twisting N-1 pieces of parallel electromagnetic wires; the tail ends of the electromagnetic wires are led out from the outer frame of the winding body (1) to form N-1 taps; the front ends of the electromagnetic wires are led out from the inner frame of the winding body (1); the front ends and the tail ends of neighboring electromagnetic wires are connected in series; the front end of the N electromagnetic wire is led out to the outer frame of the winding body (1) through a guide wire to form the N tap. The shell transformer regulating winding can guarantee the basic balance of the electrical ampere-turns of the winding body, and reduces transverse flux leakage. The shell transformer regulating winding is an ideal regulating winding used on power or electric furnace shell transformers.

Description

Shell type transformer pressure regulation winding

Technical field: the utility model relates to a kind of Transformer Winding, relates in particular to a kind of shell type transformer pressure regulation winding.

Background technology: well-known, the shell type transformer pressure regulation all is to realize pressure regulation by the coil turn that changes the pressure regulation winding.At present, the pressure regulation winding of shell type transformer generally is to be coiled in the electromagnetic wire that forms annular pie structure on the iron core from inside to outside by one to constitute, and draws N tap according to certain coil turn and pressure regulation extreme difference from the pressure regulation winding as required.The pressure regulation winding of this structure is when carrying out upper limit pressure regulation or lower limit pressure regulation, and the excision or the switch-on coil number of turn are minimum.Because mode is excised in employing in proper order usually, the position of switch-on coil often is in the inside casing or the housing place of winding body, therefore causes the electric ampere-turn imbalance of winding body, and laterally leakage field is serious; When particularly being short-circuited, this cognition of winding is subjected to bigger impulsive force, causes mechanical failure easily.

Summary of the invention: at the above-mentioned defective that exists in the prior art, the utility model aims to provide a kind of shell type transformer pressure regulation winding that can reduce short-circuit impact power.

To achieve these goals, the utility model by the following technical solutions: it comprises by electromagnetic wire and is coiled on the iron core pie structure ringwise and has the winding body of N tap; The winding body is coiled to form by the described electromagnetic wire that the N-1 root is arranged in parallel, and the end of each electromagnetic wire is drawn from the housing of winding body and formed N-1 tap, and the head end of each electromagnetic wire is drawn from the inside casing of winding body; The head end and the end of each adjacent electromagnetic wire are connected in series, and the head end of N root electromagnetic wire forms N tap by the housing place that lead leads to the winding body.

Compared with the prior art, the utility model is owing to adopted technique scheme, when carrying out upper limit pressure regulation or lower limit pressure regulation, though the excision or the switch-on coil number of turn are still minimum, but the position of switch-on coil can evenly distribute along the breadth of winding body (promptly being evenly distributed between the interior housing), the distributing position of voltage regulation coils at different levels in the winding body is basic identical, therefore can guarantee the electric ampere-turn kept in balance of winding body effectively, has reduced horizontal leakage field; Even if be short-circuited, the short-circuit impact power that the winding body is subjected to is also roughly the same with basic winding, thereby has reduced the short-circuit impact power that the winding body is subjected to.

Description of drawings:

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

Fig. 2 is the principle schematic of Fig. 1;

Fig. 3 is the structural representation of traditional shell type transformer pressure regulation winding;

Fig. 4 is the principle schematic of Fig. 3.

Among the figure: winding body 1

Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:

In Fig. 1～2, winding body 1 constitutes by being arranged in parallel and being coiled in eight electromagnetic wires that form annular pie structure on the iron core simultaneously, terminal A, the B of described each electromagnetic wire, C, D, E, F, G, H draw from the housing of winding body 1 and form eight taps, and each electromagnetic wire head end A ', B ', C ', D ', E ', F ', G ', H ' draw from the inside casing of winding body 1; The head end and the end of each adjacent electromagnetic wire are connected in series, that is: the head end A ' of first electromagnetic wire is connected with the terminal B of second electromagnetic wire, the head end B ' of second electromagnetic wire is connected with the terminal C of the 3rd electromagnetic wire, the head end C ' of the 3rd electromagnetic wire is connected with the terminal D of the 4th electromagnetic wire, the head end D ' of the 4th electromagnetic wire is connected with the terminal E of the 5th electromagnetic wire, the head end E ' of the 5th electromagnetic wire is connected with the terminal F of six roots of sensation electromagnetic wire, the head end F ' of six roots of sensation electromagnetic wire is connected with the terminal G of the 7th electromagnetic wire, the head end G ' of the 7th electromagnetic wire is connected with the terminal H of the 8th electromagnetic wire.The head end H ' of the 8th electromagnetic wire is formed the 9th tap I by the housing place that lead leads to winding body 1.

With Fig. 1,2 and Fig. 3,4 compare as can be seen, the distributing position of voltage regulation coils at different levels of the present utility model in winding body 1 is basic identical, therefore laterally leakage field is less; And the distributing position of voltage regulation coils at different levels in winding body 1 of traditional pressure regulation winding has a long way to go, particularly the position of switch-on coil is distributed in winding body 1 edge (inside casing place or housing place) respectively when carrying out upper limit pressure regulation and lower limit pressure regulation, therefore laterally leakage field is bigger, and the short-circuit impact power that is subjected to is bigger.

Claims

1. shell type transformer pressure regulation winding comprises by electromagnetic wire being coiled on the iron core pie structure ringwise and having the winding body of N tap; It is characterized in that: winding body (1) is coiled to form by the described electromagnetic wire that the N-1 root is arranged in parallel, and the end of each electromagnetic wire is drawn from the housing of winding body (1) and formed N-1 tap, and the head end of each electromagnetic wire is drawn from the inside casing of winding body (1); The head end and the end of each adjacent electromagnetic wire are connected in series, and the head end of N root electromagnetic wire forms N tap by the housing place that lead leads to winding body (1).