CN102270525A

CN102270525A - Rectangular transposed aluminum-core wire used for extra-high voltage hollow smoothing reactor and production method of rectangular transposed aluminum-core wire

Info

Publication number: CN102270525A
Application number: CN 201110213462
Authority: CN
Inventors: 卢廷杰; 徐志军; 陈庆国
Original assignee: JIANGSU BAOJIELONG MAGNET WIRES CO Ltd
Current assignee: JIANGSU BAOJIELONG MAGNET WIRES CO Ltd
Priority date: 2011-07-28
Filing date: 2011-07-28
Publication date: 2011-12-07

Abstract

The invention relates to a rectangular transposed aluminum-core wire used for an extra-high voltage hollow smoothing reactor and a production method of the rectangular transposed aluminum-core wire, belonging to the technical field of production of rectangular transposed aluminum-core wires used for extra-high voltage hollow smoothing reactors in the transformer industry. The method comprises the steps of: firstly, carrying out round wire drawing by adopting a solid aluminum wire-drawing lubricant to perform; secondly, performing aerobic annealing of aluminum wires under the condition of 380+/-10 DEG C; thirdly, wrapping polyimide thin films outside the round aluminum wires to form a single wire; fourthly, transposing a plurality of single wires into a strand of wire cores; fifthly, square-cutting stranded wire cores to form a matrix structure with rectangular fracture surfaces in two rows and multiple columns; and finally, wrapping the polyimide thin films and non-woven fabric composite polyimide thin films outside the square-cut wire cores. The rectangular transposed aluminum-core wire provided by the invention has the advantages of simple and reasonable process, the withstand voltage among product wires reaches 10000 V above, and finally, the rectangular transposed aluminum-core wire has no influence on the outside and cannot be influenced by the outside while being subjected to extra-high voltage.

Description

The hollow smoothing reactor of superhigh pressure is with rectangle transposition aluminium core lead and production method thereof

Technical field

The present invention relates to a kind of transformer industry with the hollow smoothing reactor of superhigh pressure with rectangle transposition aluminium core lead production technical field.

Background technology

The transformer industry development of nearly 2 years China is rapid, and the reactor cause has also obtained bigger development simultaneously, and the instructions for use of reactor also is more and more higher, but there is following defective in existing lead, and often result of use is not as people's will, and its defective is as follows:

1, during the single coiling of common aluminum steel, can only bear 10 volts of following magnitudes of voltage between line; This product belongs to the combined product of multi cord, and every conductor must bear bigger magnitude of voltage, so necessarily require that insulation layer structure is good between single line.

2, during many coilings of common aluminum steel and since strand between produce the not isometric resistance injustice that influences between line of coiling, thereby cause that eddy current loss is excessive to be inevitable, so not only cause the waste of the energy, and the transformer hidden danger that the temperature rise of generating heat brings also is fatal.

Summary of the invention

The present invention is directed to above-mentioned defective, the hollow smoothing reactor of superhigh pressure that purpose is to provide a kind of long service life, keep the superperformance state for a long time is with rectangle transposition aluminium core lead.

The present invention includes the rectangular core of being made up of many conductors of section, every conductor comprises aluminum steel and the winding at least one strata imide membrane outside aluminum steel, winding polyimide film and polyester compound nonwoven cloth successively outside described core.

Also can between polyimide film and compound nonwoven cloth, establish polyimides reinforcement mica tape.

Another purpose of the present invention is to provide the production method of above product:

Its processing step is as follows:

1) adopting solid-state aluminum wire drawing oil to justify line draws;

2) aluminum steel is carried out aerobic annealing in 4 hours under 380 ± 10 ℃ of temperature conditions;

3) wrapped polyimide film outside aluminium round wire forms single line;

4) many single lines are replaced into one core;

5), form the rectangular matrix structure of two row's multiple row sections to becoming the core pressure side of thigh;

6) wrapped polyimide film and non-woven fabric compounded polyimide film outside the core of pressure side.

Technology of the present invention is simple, reasonable, and the advantage of product is:

1, adopts the circle aluminum steel as conductor, add the two layers of polyimide film, can make like this to reach proof voltage between line and reach more than 10000 volts at aluminium round wire.

2, many single lines are replaced (intercept is big as far as possible), increase silastic material during transposition and avoid injuring insulating barrier; Press rectangle to become two row's multiple row structures the multiple conducting wires after the transposition, realize isometric transposition fully.

3, outside final products, increase anti-corona and frequency conversion material, when making product finally self bear superhigh pressure, do not have influence to external world, again can be by external interference.

The speed that draws in the described step 1) is 700～1000m/min, and the wire drawing speed ratio is 1.25.

The pitch of transposition is 22～28mm when becoming thigh in the described step 4).

In the described step 6), before wrapped non-woven fabric compounded polyimide film, adopt polyimides reinforcement mica tape wrapped.

Embodiment

1) adopt solid-state aluminum wire drawing oil to justify line and draw, the speed of drawing is 700～1000m/min, and the wire drawing speed ratio is 1.25;

3) outside aluminium round wire, adopt the two layers of polyimide film wrapped, wrappedly put up 33%, two-layer between the slit do not allow overlapping;

4) many single lines are replaced into one core, the pitch of transposition is 22～28mm;

6) wrapped successively three-layer thin-film is wrapped outside the core of pressure side: ground floor polyimide film, the second layer are polyimides reinforcement mica tape, and outermost layer is non-woven fabric compounded polyimide film, form peripheral protective layer.

7) rolling, product inspection.

Claims

1. the hollow smoothing reactor of superhigh pressure is with rectangle transposition aluminium core lead, it is characterized in that comprising the rectangular core of forming by many conductors of section, every conductor comprises aluminum steel and the winding at least one strata imide membrane outside aluminum steel, winding polyimide film and polyester compound nonwoven cloth successively outside described core.

According to the hollow smoothing reactor of the described superhigh pressure of claim 1 with rectangle transposition aluminium core lead, it is characterized in that between polyimide film and compound nonwoven cloth, establishing polyimides reinforcement mica tape.

One kind according to claim 1 the hollow smoothing reactor of superhigh pressure it is characterized in that may further comprise the steps with the production method of rectangle transposition aluminium core lead:

1) adopting solid-state aluminum wire drawing oil to justify line draws;

3) wrapped polyimide film outside aluminium round wire forms single line;

4) many single lines are replaced into one core;

5), form the matrix structure of two row's multiple row section square rectangles to becoming the core pressure side of thigh;

4. according to the production method of the hollow smoothing reactor of the described superhigh pressure of claim 3 with rectangle transposition aluminium core lead, it is characterized in that the speed that draws in the described step 1) is 700～1000m/min, the wire drawing speed ratio is 1.25.

5. according to the production method of the hollow smoothing reactor of the described superhigh pressure of claim 3 with rectangle transposition aluminium core lead, the pitch of transposition is 22～28mm when it is characterized in that becoming thigh in the described step 4).

6. according to the production method of the hollow smoothing reactor of the described superhigh pressure of claim 3, it is characterized in that in the described step 6), before wrapped non-woven fabric compounded polyimide film, adopt polyimides reinforcement mica tape wrapped with rectangle transposition aluminium core lead.