CN2066613U

CN2066613U - 35kv winding structure for transformer

Info

Publication number: CN2066613U
Application number: CN 90213449
Authority: CN
Inventors: 孟凡韬; 朱英浩; 张春和; 周重芝; 李文海
Original assignee: SHENYANG TRANSFORMER FACTORY
Current assignee: SHENYANG TRANSFORMER FACTORY
Priority date: 1990-06-15
Filing date: 1990-06-15
Publication date: 1990-11-28

Abstract

The utility model relates to a winding structure of a 35KV transformer, which is suitable for the winding of a 35KV transformer. The utility model is particularly suitable for the high voltage winding of a 35KV transformer. The winding of the utility model is respectively wound into a kinking type structure zone and a continuous structure zone, and the largest oil clearance among line segments can be reduced to 4 mm. The utility model has the advantages that the oil gap gradient electric voltage can be reduced, the size of the oil clearance among the line segments and the winding height can be reduced, the raw material is saved, the cost is reduced, etc.

Description

35KV winding structure for transformer

The utility model is a kind of transformer 35KV winding construction, is applicable to the high pressure winding of transformer 35KV pie winding, particularly 35KV transformer.

The transformer 35KV pie winding of producing adopts the fully continuous type structure mostly at present.Though this structure good manufacturability, roll conveniently, but weak point is that higher vibration overvoltage is arranged under the surge voltage effect, but cutting 160% of maximum oscillation overvoltage intelligent ripple under the ripple effect, thereby the oil clearance gradient is excessive between winding segments, intersegmental oil clearance is generally 6mm, make that small product size increases, the waste raw material, increase manufacturing cost.

The utility model purpose provides a kind of vibration potential that can reduce impulse overvoltage, reduces the transformer 35KV pie winding structure of intersegmental oil clearance size, to overcome the weak point in the prior art.

The utility model purpose can reach by following measure: a kind of transformer 35KV winding construction, comprise line segment N and oil clearance M, its special character is: winding is by being entangled with formula structural area P line segment N and continous way structural area Q line segment N forms, intersegmental oil clearance M can be less than 6mm, can turn to the formula of being entangled with at each 4 line segment N of the head and end of winding, and all the other line segment N turn to continous way; Can get 4mm at each 6 intersegmental oil clearance M of winding head and end, all the other oil clearance M get 3mm.

The utility model advantage is: because winding first and last end is for being entangled with the formula structure, it is to utilize the geometric position method of being staggered of wire turn to increase the vertical capacitance of winding, thereby can reduce shock oscillation current potential and oil clearance gradient voltage, reduce intersegmental oil clearance size and axis of winding height, it is compared with fully continuous type winding oil clearance gradient and reduces about 20%, the oil clearance size reduces about 30%, thereby saves material, reduces cost.

The accompanying drawing drawing is described as follows:

Fig. 1 is former continous way winding construction

Fig. 2 is that the utility model is entangled with continous way winding and embodiment.

Fig. 3 is fully continuous type winding vibration potential distribution (all-wave)

Fig. 4 is entangled with continous way winding vibration potential distribution (all-wave)

Among Fig. 1,2: A is the winding head end, and X is the winding end.

N is the winding line segment, and M is intersegmental oil clearance, and n is a wire turn, and K is for entangling the position, and L is a vicinal, and P is for being entangled with the district, and Q is the continuum.

Among Fig. 1: oil clearance size between line segment N, head and end is 6mm for 6 sections, all the other are 5mm

Among Fig. 2, oil clearance size between line segment N, head and end is 4mm for each 6 sections, all the other are 3mm

Fig. 2 is a specific embodiment of the utility model:

Be entangled with formula as being entangled with district P at each 4 line segment N coiled of winding head and end, if to be entangled with the every line segment in district be n circle (present embodiment n=7) with two lead coilings, after intact the 1st line segment, carry out position, the end the 1st line segment circle numbers 10 that replaces and change to the 2nd line segment circle numbers 11, the 1st line segment circle numbers 4 is changed to the 2nd line segment circle numbers 5, behind intact the 2nd line segment, with numbers 8 welding of circle in circle number the 7 and the 1st line segment (entangling the position), the 2nd line segment circle numbers 14 is changed to the 3rd section with the L shaped formula of vicinal, is equipped with 1 line again, with the 3rd section of two wire-wound system, carry out the transposition of position, the end after intact the 3rd section, the 3rd section circle numbers 4 changed to numbers 5, the 3 sections circles of the 4th section circle numbers 10 and changed to the 4th section circle numbers 11, after intact the 4th section, the 4th section circle number 7 and the 3rd sections circle number 8 welding (entangling the position), since the 5th section coiling continous way, last terminal 4 line segments, identical with 4 line segments of head end, turn to the formula of being entangled with.All the other get 3mm to get 4mm at each 6 intersegmental oil clearance M of head and end.

Claims

1, a kind of transformer 35KV winding construction comprises line segment N and oil clearance M, it is characterized in that: winding N forms by being entangled with district P line segment N and continuum Q line segment N, and oil clearance M can be less than 6mm between largest segment;

2, according to the described a kind of transformer 35KV winding construction of claim 1, it is characterized in that: be entangled with formula winding district P at each 4 line segment N of winding head and end portion, all the other are the continuum Q that continuous line segment N forms.

3, according to the described a kind of transformer 35KV winding construction of claim 2, it is characterized in that: each 4 intersegmental oil clearance M is of a size of 4mm at the winding head and end, and all the other are 3mm.