CN204168081U - A kind of end fastening structure when processing ultrahigh speed exciter rotor - Google Patents
A kind of end fastening structure when processing ultrahigh speed exciter rotor Download PDFInfo
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- CN204168081U CN204168081U CN201420482712.7U CN201420482712U CN204168081U CN 204168081 U CN204168081 U CN 204168081U CN 201420482712 U CN201420482712 U CN 201420482712U CN 204168081 U CN204168081 U CN 204168081U
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- iron core
- steel wire
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- ultrahigh speed
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Abstract
The utility model discloses a kind of end fastening structure when processing ultrahigh speed exciter rotor, comprise iron core, be arranged in the trim ring at two ends unshakable in one's determination and embed the coil of coil groove unshakable in one's determination, two end windings exposing two end faces of described iron core are respectively close to the surface of two described trim rings correspondingly.On the surface of two described end windings and the surface of described iron core respectively vertically with 1.5 circles/centimetre mode be wound with steel wire hoop continuously from left to right, the two ends of this steel wire hoop to described iron core both ends of the surface between distance be 2/3 of the length of whole end winding.End of the present utility model fastening structure, adopted before product is around the home without latitude strap, the intermediate frequency welding of levels can be carried out on the one hand to the interphase connection being close to trim ring surface, end under tightening state, prevent overheated generation blackout from burning phenomenon, fully improve formally without the hoop-driving quality of latitude strap on the other hand, thus it is integral to guarantee that whole rotor tightens up.
Description
Technical field
The utility model relates to a kind of end fastening structure when processing ultrahigh speed exciter rotor.
Background technology
The power 20000kW of ultrahigh speed exciter, number of poles 2P, rated speed 4800rpm, voltage 9350V; The rotor of this exciter by rotor core 1, two ends trim ring 21,22, pulled-type coil, conducting ring 6, busbar 7 etc. form (see Fig. 1).The structure of this rotor has following characteristics:
(1) the vapour end 32 of pulled-type coil is shaped, coil encourage end 31 need with bending tool, gear pincers are manual bend two radians, require identical with the vapour end bending size of coil, shape; For placing vertically in general coil rule time slot, and the position close-packed arrays of the end winding 31,32 of this structure on trim ring 21,22 horizontally-arranged, almost very close to each other, difficulty certainly will be brought to the bending of coil, embedding bag etc. like this, very easily cause the damage of insulation;
(2) for guaranteeing rotor safety high speed running (about 5000 revs/min), coil vapour, encourage on end 31,32 and busbar 7 and need respectively to make a call to one section vertically in uniform way without latitude strap 5, technical requirement is high;
(3) levels of end winding mutually in splicing ear almost touch trim ring surface, levels is made to occur that blackout burns phenomenon in interior splicing ear end coil position when intermediate frequency welds mutually on the one hand, on the other hand intermediate frequency weld the insufficient solder connection of rear section levels interior splicing ear mutually, make weld full not, can hidden danger of quality be produced.
Utility model content
The purpose of this utility model is the defect overcoming prior art, a kind of end fastening structure when processing ultrahigh speed exciter rotor is provided, it can guarantee coil both ends coil insulation quality on the one hand, fully improves formally without the hoop-driving quality of latitude strap on the other hand.
The purpose of this utility model is achieved in that a kind of end fastening structure when processing ultrahigh speed exciter rotor, comprise iron core, be arranged in the trim ring at two ends unshakable in one's determination and embed the coil of coil groove unshakable in one's determination, two end windings exposing two end faces of described iron core are respectively close to the surface of two described trim rings correspondingly, wherein, on the surface of two described end windings and the surface of described iron core respectively vertically with 1.5 circles/centimetre mode be wound with steel wire hoop continuously from left to right, the two ends of this steel wire hoop to described iron core both ends of the surface between distance be 2/3 of the length of whole end winding.
The above-mentioned end fastening structure when processing ultrahigh speed exciter rotor, wherein, also fills out between the surface of described steel wire hoop and two described end windings and puts the thick epoxy plate of a 0.5mm.
The above-mentioned end fastening structure when processing ultrahigh speed exciter rotor, wherein, described steel wire hoop employing diameter is the zinc-coated wire of Φ 2mm.
The technical scheme of the end fastening structure when processing ultrahigh speed exciter rotor of the present utility model, adopted before product is around the home without latitude strap, the intermediate frequency welding of levels can be carried out on the one hand to the interphase connection being close to trim ring surface, end under tightening state, prevent overheated generation blackout from burning phenomenon, guarantee coil both ends coil insulation quality, fully improve on the other hand formally without the hoop-driving quality of latitude strap, thus it is integral to guarantee that whole rotor tightens up, fully ensure that coil both ends tighten up state in the process of running up, meet and ensure the fail safe that super high speed motor runs and stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of ultrahigh speed exciter rotor;
Fig. 2 is the schematic diagram of the end fastening structure when processing ultrahigh speed exciter rotor of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, end fastening structure when processing ultrahigh speed exciter rotor of the present utility model, comprise iron core 1, be arranged in the coil of the coil groove of the trim ring 21,22 at 1 two ends unshakable in one's determination and embedding unshakable in one's determination 1, two end windings 31,32 exposing two unshakable in one's determination end faces are respectively close to the surface of two trim rings 21,22 correspondingly, wherein
The length of two end windings 31,32 is L, the surface of these two end windings 31,32 and unshakable in one's determination 1 surface on respectively vertically with 1.5 circles/centimetre mode be wound with steel wire hoop 4 continuously from left to right, the distance H between the both ends of the surface at the two ends to unshakable in one's determination 1 of this steel wire hoop 4 is 2/3 of the length L of end winding.Steel wire hoop 4 adopts diameter to be the zinc-coated wire of Φ 2mm.Also fill out between the surface of steel wire hoop 4 and two end windings 31,32 and put the thick epoxy plate (not shown) of a 0.5mm, to ensure the intensity that coiling steel wire hoop 4 can bear and hardness, also can completely cut off the heat transfer of a part of steel wire hoop 4, for the welding of follow-up intermediate frequency is ready simultaneously.
End fastening structure when processing ultrahigh speed exciter rotor of the present utility model, first carry out rule circle operation, then the drying room of feeding 80 DEG C ~ 100 DEG C carries out the preliminary drying of 2 ~ 3 hours, carry out coiling steel wire hoop 4 again, be can not be interrupted continuously during coiling steel wire hoop 4, namely start from the end winding 31 in left side, after 1 ~ 2 circle, improve the pulling force of steel wire to 2.1 ~ 2.2kN, rotating speed general control is at 5r/min, first from the end winding 31 in left side, through rotor core 1, then finish up to the end winding 32 on right side; After complete steel wire hoop 4, drying room rotor being sent into 130 DEG C again cures 8 hours, after curing end, rotor is cooled to room temperature, the levels of then carrying out two end windings 31,32 under the state that tightens up of steel wire hoop 4 mutually in the intermediate frequency welding of splicing ear and the soldering of interpolar connecting line, before welding the steel wire hoop 4 being positioned at outmost turns is shunk 20mm towards the end face side of iron core 1, the requirement that end winding 31,32 tightens up can be met like this, maintain a certain distance with the welding position of end again, avoid the insulation damages that steel wire hoop 4 causes because of induction heating further.Welded and after insulation processing completes, removed steel wire hoop 4, now whole rotor tightens up solidification, and end winding marshalling, circular arc degree are good; Finally on two end windings, beat formal product without latitude strap, thus fully ensure the hoop-driving quality of product without latitude strap.
End fastening structure when processing ultrahigh speed exciter rotor of the present utility model, before product is around the home without latitude strap, first with 1.5 circles/centimetre open structure mode steel wire hoop 4 around the home, can effectively prevent 31 of two end windings like this, 32 levels mutually in splicing ear when intermediate frequency welds, because the induction heating of steel wire hoop 4 causes the too high phenomenon of end winding temperature, thus avoid causing the damage (blackout is burnt) of the insulation of the end winding (covered by epoxy plate) below steel wire hoop, guarantee coil both ends coil insulation quality, fully improve on the other hand formally without the hoop-driving quality of latitude strap, thus it is integral to guarantee that whole rotor tightens up, fully ensure that coil both ends tighten up state in the process of running up, meet and ensure the fail safe that super high speed motor runs and stability.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, when not departing from spirit and scope of the present utility model, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present utility model, should be limited by each claim.
Claims (3)
1. the end fastening structure when processing ultrahigh speed exciter rotor, comprise iron core, be arranged in the coil of the coil groove of the trim ring at two ends unshakable in one's determination and embedding iron core, two end windings exposing two end faces of described iron core are respectively close to the surface of two described trim rings correspondingly, it is characterized in that
On the surface of two described end windings and the surface of described iron core respectively vertically with 1.5 circles/centimetre mode be wound with steel wire hoop continuously from left to right, the two ends of this steel wire hoop to described iron core both ends of the surface between distance be 2/3 of the length of whole end winding.
2. the end fastening structure when processing ultrahigh speed exciter rotor according to claim 1, is characterized in that, also fill out and put the thick epoxy plate of a 0.5mm between the surface of described steel wire hoop and two described end windings.
3. the end fastening structure when processing ultrahigh speed exciter rotor according to claim 1, is characterized in that, described steel wire hoop employing diameter is the zinc-coated wire of Φ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420482712.7U CN204168081U (en) | 2014-08-26 | 2014-08-26 | A kind of end fastening structure when processing ultrahigh speed exciter rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420482712.7U CN204168081U (en) | 2014-08-26 | 2014-08-26 | A kind of end fastening structure when processing ultrahigh speed exciter rotor |
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| CN204168081U true CN204168081U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420482712.7U Active CN204168081U (en) | 2014-08-26 | 2014-08-26 | A kind of end fastening structure when processing ultrahigh speed exciter rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317449A (en) * | 2017-08-14 | 2017-11-03 | 江苏环球特种电机有限公司 | A kind of high efficiency high-pressure explosion-proof type three-phase asynchronous |
-
2014
- 2014-08-26 CN CN201420482712.7U patent/CN204168081U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317449A (en) * | 2017-08-14 | 2017-11-03 | 江苏环球特种电机有限公司 | A kind of high efficiency high-pressure explosion-proof type three-phase asynchronous |
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