CN104362819A - Processing technique of coil winding turn-to-turn insulation - Google Patents
Processing technique of coil winding turn-to-turn insulation Download PDFInfo
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- CN104362819A CN104362819A CN201410614386.5A CN201410614386A CN104362819A CN 104362819 A CN104362819 A CN 104362819A CN 201410614386 A CN201410614386 A CN 201410614386A CN 104362819 A CN104362819 A CN 104362819A
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Abstract
The invention discloses a processing technique of coil winding turn-to-turn insulation, belongs to the technical field of manufacturing of coil windings for hydraulic turbine generators, and mainly provides a processing technique of coil winding turn-to-turn insulation, for operators to perform manual binding under higher 10500V. The processing technique is characterized in that a shuttle form is made by winding according to a drawing designed length, a wire is tightly attached to the side of a winding former during winding to prevent coil gaps and loose inside with tight outside, tinning is performed according to a lead length specified in a drawing, a copper wire insulating layer is removed by scraping, lengthwise positions of the two ends of a shuttle coil are adjusted, two ends of the shuttle coil are fixed to an expander, expanding is started, a wire structure with the insulating layer is formed and is circularly wound into a conductive coil with a specified number of turns, the surface of the whole conductive coil has no protrusions which make the insulating layer incomplete, and good insulation effect is achieved. The processing technique has the advantages that the structure is simple, electrical insulation is good, a production process is simplified, a production cycle is shortened, and production cost is lowered.
Description
Technical field
The invention belongs to hydraulic generator coil type winding manufacture technology field, in particular to, particularly relate to a kind of coil type winding turn-to-turn insulation processing technology of the manual wrapping of 10500 volts of above operators of level.
Background technology
At present, coil type winding turn-to-turn insulation is one of critical component of Winding of HV motor, the failure rate punctured with motor insulation between coils in high-voltage motor insulated operation troubles is the highest, high-voltage motor causes insulating SiC between coil turn due to long operational time, radiating effect is poor, thermal endurance class is low, motor volume is large, unit capacity is low and cost is very high, turn-to-turn insulation punctures and usually causes insulation against ground to puncture to cause short circuit, and turn-to-turn insulation quality is often easily out in the cold, in the actual production course of processing, when particularly producing 10500 volts of level coil of loop-type coils of high-voltage motor, due to groove size restrictions, it is very thin that turn-to-turn insulation designs.And coil making belongs to traditional manufacturing industry and operation hand-manipulated is numerous and diverse, technical process is more complicated, therefore quality is wrapped up by hand in coiling, bulging, shaping, turn-to-turn insulation, in the technical processs such as compacting, by the difference of operator's technical merit and sense of responsibility impact, through beaing often, the mechanical damage caused all may make turn-to-turn insulation damaged to coil, causes turn-to-turn insulation performance depreciation.Beaing or mechanical damage insulation between coils short circuit that other reasons causes when rolling off the production line.
Summary of the invention
The present invention solves the technical problem existed in known technology, provide a kind of coil type winding turn-to-turn insulation processing technology, in order to ensure Winding of HV motor turn-to-turn insulation reliability, except requiring to design reasonably, reliably outside insulation between coils structure outer, the technique that adopts advanced person, material, also in motor manufacturing process, should digest and assimilate by the cultivation to operator's technical merit and sense of responsibility, the technical papers to advanced person, understand.In quality control, every operation Reinforce checkout, advanced, careful preventive trial is adopted to carry out quality control, provide a kind of safe and reliable, simple, easy to control turn-to-turn insulation quality, ensure a kind of coil type winding turn-to-turn insulation processing technology of product quality for this reason.
The object of this invention is to provide a kind of coil type winding turn-to-turn insulation processing technology.
Of the present inventionly to comprise the following steps:
1. press layout design length requirement coiling fusiformis, the pull-shaped folder pulling force adjustment of wire, during coiling, winding former side is close to by wire, while dredge bag tape around limit, often around a circle wooden mallet and bakelite plate, itself and the winding former mould heart are beaten docile, after enough numbers of turn, cut off lead-in wire by drawing specific length, unload shuttle coil, with tape, coiled wire-wound coil is wrapped up, make each circle wire become overall, nose place, two ends half-stack package, straightway place 1/3 stacked package, pats smooth;
2. ward off tin by drawing regulation wire length and scrape off copper cash insulating barrier, point good upper and lower line, the extension position at adjustment shuttle coil both ends is fixed on expanding machine and starts to rise type;
3. coil is put into sizing die, adjust straightway position, fastening straight line foundary weight, with wooden mallet, end and sizing die being beaten docile with re-packing, protecting insulation, find that turn-to-turn short circuit processes in time;
4. many for epoxy adhesive-contented mica tapes are put into microwave oven preheating 6-10 seconds, carry out wrapping turn-to-turn insulation, by lead-in wire labeling moiety stacked package 6 layers of lead wire insulation, hypotenuse end is bundled into spindle shape to hypotenuse 1/2 place, lead terminal is bundled into 30 ~ 35mm fusiformis, half-stack package turn-to-turn insulation 2 layers from hypotenuse lead wire insulation place, and overlap the width of half mica tape with lead wire insulation;
5. turn-to-turn insulation solidification; In order to make arrangements of conductors neat, improving coil and making rigidity, eliminating gap between turn-to-turn or stock, prevent in motor runs, produce air gap and dissociate, carry out turn-to-turn insulation solidification;
A). flat bag one deck polytetrafluoroethylene demoulding band outside coil;
B). put into the baker preheating 30 ~ 40 minutes of 130 ± 5 DEG C;
C). the coil that the pre-heat treatment is crossed be placed on 175 ± 5 DEG C scribble in the hot-die of release agent, adjust coil position and buckle straight line foundary weight, add total head to foundary weight and by seamless between iron, buckle end foundary weight again, add total head, send in the baker of 175 ± 5 DEG C and be incubated 1h, make bondingly between each strand to become one overall;
D). coil is come out of the stove, and removes demoulding band, puts into the sizing of cooling shaping mould.
Further, described lead-in wire corner configurations is circular arc.
Further, described lead terminal is bundled into 30 ~ 35mm fusiformis.
Further, described coil four corner angle are of a size of rounding R2 ~ 3mm.
Further, the many adhesive-contented mica tapes of described epoxy put into microwave oven preheating 6-10 seconds, and mica tape is softened.
Further, flat bag one deck polytetrafluoroethylene demoulding band outside described coil.
The advantage that the present invention has and good effect: adopt technical solution of the present invention, from being designed into the constantly perfect of coil manufacturing technology, operator is to the overall understanding of coil type winding technological process, on the make digest and assimilate Ji Ge road work in maintaining strict control over gate of the quality monitoring, make traditional hand packet mode operation more accurately exquisite, adopt advanced technical matters simultaneously, the conductor material that corona-resistance property is good, ensure the reliability of coil of loop-type coils of high-voltage motor turn-to-turn insulation, in motor manufacturing process, adopt advanced science, careful preventive trial carries out quality control, ensure that product quality.The use of pulsed interturn test method, is conducive to the raising promoting my company's coil insulation quality, also improves quality and the operational reliability of the turn-to-turn insulation of motor winding, for high-voltage AC motor quality creates advantage simultaneously.
Embodiment
For understanding summary of the invention of the present invention, Characteristic further, hereby exemplifying following examples, be described in further detail embodiment:
For 1.3 ten thousand KW (repairing mountain unit) unit, it is characterized in that in manufacture method: by layout design length requirement coiling fusiformis, during coiling, wire tension appropriateness, makes it to be close to winding former side, limit and dredges bag tape around limit, often beat docile around a circle plank by itself and winding former, if prevent from occurring between coil that gap and the outer tight phenomenon of Li Song find that wire insulation damage is damaged, after enough numbers of turn, cut off lead-in wire by drawing specific length, unload shuttle coil.With tape, coiled wire-wound coil is wrapped up, make each circle wire become overall, nose place, two ends half-stack package, straightway place 1/3 stacked package.Ward off tin by drawing regulation wire length and scrape off copper cash insulating barrier, point good upper and lower line, the extension position at adjustment shuttle coil both ends is fixed on expanding machine and starts the type that rises.Coil is put into sizing die, adjusts straightway position, fastening straight line foundary weight, beat docile with wooden mallet by end and sizing die with re-packing, firmly appropriateness, protects insulation.If find that when shaping wire insulation damage is damaged, should repair in time, avoid Reinforce checkout and test in dust, impurity band people coil, discovery turn-to-turn short circuit processes in time.Lead riser be ensure coil shape consistent, to reduce technique insulation harm.By drawing, with dedicated pin head whole head instrument, lead-in wire corner is simmered into R25 circular arc, and keep upper and lower lead spacing from being 25mm.Many for epoxy adhesive-contented mica tapes are put into microwave oven preheating 6-10 seconds, and mica tape is softened, and volatile matter volatilizees, and carries out wrapping turn-to-turn insulation.By lead-in wire labeling moiety stacked package 6 layers of lead wire insulation, hypotenuse end is bundled into spindle shape to hypotenuse 1/2 place, and lead terminal is bundled into 30 ~ 35mm fusiformis.Half-stack package turn-to-turn insulation 2 layers from hypotenuse lead wire insulation place, and overlap the width of half mica tape with lead wire insulation, in order to make that wrapping insulation size dispersiveness is little, thickness evenly, wrap up uniform ground, to reach gauge consistent, thus improve insulation electrical performance, strictly must control wrapping insulation quality tight.In order to make arrangements of conductors neat, improve coil and make rigidity, eliminate gap between turn-to-turn or stock, produce in preventing from running air gap free, must turn-to-turn insulation solidification be carried out.Flat bag polytetrafluoroethylene demoulding band one deck outside coil, put into the baker preheating 30 ~ 40 minutes of 130 ± 5 DEG C, the coil that the pre-heat treatment is crossed be placed on 175 ± 5 DEG C scribble in the hot-die of release agent, adjust coil position and buckle straight line foundary weight, add total head to foundary weight and by seamless between iron, buckle end foundary weight again, add total head, send in the baker of 175 ± 5 DEG C and be incubated 1h, coil is come out of the stove, remove demoulding band, put into setting mould.Coil dimension after turn-to-turn curing molding is polished to clamp size, and coil also polishes smooth with sand paper, impulse-free robustness by four corner angle rounding R2 ~ 3mm.
Above embodiment only in order to technical scheme of the present invention to be described, can not limit scope of invention with this; To the amendment that the technical scheme described in foregoing embodiments is carried out, or to the equivalent replacement that wherein portion of techniques feature is carried out, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme, all should still belong in the scope contained of the present invention.
Claims (6)
1. a coil type winding turn-to-turn insulation processing technology, described processing method comprises the following steps:
1). by layout design length requirement coiling fusiformis, the pull-shaped folder pulling force adjustment of wire, during coiling, winding former side is close to by wire, while dredge bag tape around limit, often around a circle wooden mallet and bakelite plate, itself and the winding former mould heart are beaten docile, after enough numbers of turn, cut off lead-in wire by drawing specific length, unload shuttle coil, with tape, coiled wire-wound coil is wrapped up, make each circle wire become overall, nose place, two ends half-stack package, straightway place 1/3 stacked package, pats smooth;
2). ward off tin by drawing regulation wire length and scrape off copper cash insulating barrier, point good upper and lower line, the extension position at adjustment shuttle coil both ends is fixed on expanding machine and starts to rise type;
3). coil is put into sizing die, adjusts straightway position, fastening straight line foundary weight, with wooden mallet, end and sizing die being beaten docile with re-packing, protecting insulation, find that turn-to-turn short circuit processes in time;
4). many for epoxy adhesive-contented mica tapes are put into microwave oven preheating 6-10 seconds, carry out wrapping turn-to-turn insulation, by lead-in wire labeling moiety stacked package 6 layers of lead wire insulation, hypotenuse end is bundled into spindle shape to hypotenuse 1/2 place, lead terminal is bundled into 30 ~ 35mm fusiformis, half-stack package turn-to-turn insulation 2 layers from hypotenuse lead wire insulation place, and overlap the width of half mica tape with lead wire insulation;
5). turn-to-turn insulation is solidified; In order to make arrangements of conductors neat, improving coil and making rigidity, eliminating gap between turn-to-turn or stock, prevent in motor runs, produce air gap and dissociate, carry out turn-to-turn insulation solidification;
A). flat bag one deck polytetrafluoroethylene demoulding band outside coil;
B). put into the baker preheating 30 ~ 40 minutes of 130 ± 5 DEG C;
C). the coil that the pre-heat treatment is crossed be placed on 175 ± 5 DEG C scribble in the hot-die of release agent, adjust coil position and buckle straight line foundary weight, add total head to foundary weight and by seamless between iron, buckle end foundary weight again, add total head, send in the baker of 175 ± 5 DEG C and be incubated 1h, make bondingly between each strand to become one overall;
D). coil is come out of the stove, and removes demoulding band, puts into the sizing of cooling shaping mould.
2., according to a kind of coil type winding turn-to-turn insulation processing technology described in claim 1, it is characterized in that: described lead-in wire corner configurations is circular arc.
3., according to a kind of coil type winding turn-to-turn insulation processing technology described in claim 1, it is characterized in that: described lead terminal is bundled into 30 ~ 35mm fusiformis.
4. according to a kind of coil type winding turn-to-turn insulation processing technology described in claim 1, it is characterized in that: described coil four corner angle are of a size of rounding R2 ~ 3mm.
5. according to a kind of coil type winding turn-to-turn insulation processing technology described in claim 1, it is characterized in that: the many adhesive-contented mica tapes of described epoxy put into microwave oven preheating 6-10 seconds, mica tape is softened.
6. according to a kind of coil type winding turn-to-turn insulation processing technology described in claim 1, it is characterized in that: flat bag one deck polytetrafluoroethylene demoulding band outside described coil.
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| CN201410614386.5A CN104362819B (en) | 2014-11-04 | 2014-11-04 | A kind of coil type winding turn-to-turn insulation processing technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378919A (en) * | 2018-12-12 | 2019-02-22 | 哈尔滨电气动力装备有限公司 | Canned motor pump motor stator formula winding overhang insulation system |
| CN110379617A (en) * | 2019-07-03 | 2019-10-25 | 西北核技术研究院 | A kind of production method and the coil of self-adhesion cone cell high voltage second coil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109378919A (en) * | 2018-12-12 | 2019-02-22 | 哈尔滨电气动力装备有限公司 | Canned motor pump motor stator formula winding overhang insulation system |
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| CN110379617A (en) * | 2019-07-03 | 2019-10-25 | 西北核技术研究院 | A kind of production method and the coil of self-adhesion cone cell high voltage second coil |
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| CN104362819B (en) | 2019-01-04 |
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