CN205141862U - Electric motor rotor's insulating straining device - Google Patents
Electric motor rotor's insulating straining device Download PDFInfo
- Publication number
- CN205141862U CN205141862U CN201520831488.2U CN201520831488U CN205141862U CN 205141862 U CN205141862 U CN 205141862U CN 201520831488 U CN201520831488 U CN 201520831488U CN 205141862 U CN205141862 U CN 205141862U
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- screw rod
- rotor core
- hole
- rotor
- insulating layer
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Abstract
The utility model discloses an electric motor rotor's insulating straining device, the tool comprises a scre, the screw rod insert in rotor core's the through -hole with the rotor core cooperation, at least and the screw rod surface of that section rotor core complex be equipped with the insulating layer, the insulating layer is located between the inner wall of screw rod and rotor core's through -hole II, is interference fit or transition fit between insulating layer and the screw rod. The utility model discloses an use interference fit or transition fit's insulating layer with the screw rod, realizes closely docilely between the two, through processing the insulating layer surface, can control fit tolerance between insulating layer external diameter and the rotor core through -hole simultaneously, obviously reduce clearance between screw rod and the rotor core through -hole, after the insulating layer shaping intensity far above insulation support, the utility model discloses the take -up of specially adapted electric motor rotor iron core.
Description
Technical field
The utility model relates to the structure member field of motor, is more particularly a kind of insulation take-up device for generator or electricity generation and electromotion machine rotor.
Background technology
For the hydroelectric station that head luffing is larger, if motor can run on different rotating speeds in different head height, then can ensure that the hydraulic turbine is operated in optimized operation point always.Particularly draw water and store unit operation in pump operating condition, entering power can regulate accordingly along with different operating rotating speed, and the special grid power that adapts to fluctuates.Speed-adjustable water wheel motor adopts AC excitation mode, achieve flexibly connecting of motor speed and frequency of supply, ac frequency is passed into by changing rotor windings, make rotor current set up magnetic field relative rotor speed adjustable, realizing unit actual motion speed can be adjustable within the specific limits.Now, rotor three-phase exchanges winding and passes into alternating current by external current transformer, in rotor core, set up alternating magnetic field.Usual electric machine iron core adopts the thin silicon steel plates of double-sided insulation to be overrided to form, and by stretching screw, laminated core is fixed into entirety.In order to prevent occurring between stretching screw and rotor core that the situation that two-point contact causes iron core to cross cause thermal damage occurs, need to carry out insulation processing to stretching screw.
For the insulation tightening structure that segmented iron core laminated is applied, common form has two kinds: 1, metal stretching screw and insulating sleeve fit structure, the stretching screw of whole core packet all arranges insulating sleeve, realizes stretching screw and all core stampings insulate; 2, metal stretching screw and T-shaped insulating sleeve fit structure, at core lamination stack ventilation ducts place, the through hole placement T-shaped insulating sleeve passed for stretching screw that corresponding vent segment is provided with, sleeve is through at metal stretching screw, lower cartridge is placed with core packet, and T-shaped insulating sleeve cap head is placed in ventilation ducts gap; 3, metal stretching screw coordinates with improvement T-shaped insulating sleeve, and insulating sleeve centrally cross section is symmetrical up and down, and termination, two ends puts into adjacent upper and lower core packet respectively, and insulating sleeve cap head is placed in ventilation ducts gap.For structure in the 1st, comparatively wide arc gap is had owing to assembling needs between insulating sleeve and metal stretching screw and between insulating sleeve and core packet, obvious relative displacement may be there is in stretching screw and iron core, latter two structure all only realizes there is insulating sleeve between metal stretching screw and a part for core packet, also there is naked filler between a part of metal stretching screw and core packet, easily occurs that screw rod and iron core 2 short circuits cause accident.
The existing insulation take-up device be applied on motor stator, comprise the screw rod 1 being set with insulating sleeve 3, coordinate with stator core 2 in the through hole I 4 that screw rod 1 inserts stator core 2, described insulating sleeve 3 is between the inwall of the through hole I 4 of screw rod 1 and rotor core 2.Be applied to the structure of the insulating sleeve 3 that stator core 2 is strained, can penetrate insulating sleeve 3 to meet screw rod 1, insulating sleeve 3 internal diameter is obviously greater than screw rod 1 external diameter, makes there is larger gap I 5 between actual screws 1 and insulating sleeve 3; In addition because insulating sleeve 3 hardness is low, after insulating sleeve 3 and screw rod 1 coordinate during closed assembly stator core 2, on stator core 2, through hole I 4 diameter also needs obviously to be greater than insulating sleeve 3 external diameter, just can not affect penetrating of the rear screw rod 1 of insulation, make between through hole I 4 and insulating sleeve 3, also there is larger gap II 6; Due to have gap I 5 and insulating sleeve 3 and stator core 2 between insulating sleeve 3 and screw rod 1 through hole I 4 between have gap II 6, because rotor is rotatable parts, therefore make between screw rod and iron core, to produce larger relative displacement when this kind of structure application and rotor, also greatly can weaken the integral rigidity of rotor core.
So, need a kind of insulation take-up device keeping rotor core not produce slippage, full section isolation at present badly.
Utility model content
For solving above-mentioned deficiency of the prior art, the utility model provides a kind of insulation take-up device of rotor, the utility model adopts the insulating barrier with screw rod application interference fit or interference fits, realize closely docile between the two, simultaneously by processing insulating barrier outer surface, fit tolerance between insulating barrier external diameter and rotor core through hole can be controlled; Gap between obvious reduction screw rod and rotor core through hole, the shaping rear intensity of insulating barrier is far above insulating sleeve, and the utility model is specially adapted to the tension of motor rotor core.
For solving above-mentioned deficiency of the prior art, the utility model is achieved through the following technical solutions:
A kind of insulation take-up device of rotor, comprise screw rod, coordinate with rotor core in the through hole of described screw rod insertion rotor core, it is characterized in that: the screw surface of that section at least coordinated with rotor core is provided with insulating barrier, described insulating barrier, between the inwall of the through hole II of screw rod and rotor core, is interference fit or interference fits between insulating barrier and screw rod.
Described insulating barrier is the wrapped insulated binding band in screw surface.
Gap III is had between the inwall of the through hole of described insulating barrier and rotor core.
Compared with prior art, the useful technique effect that the utility model brings shows:
1, the utility model adopts the insulating barrier with screw rod application interference fit or interference fits, realizes closely docile between the two, passes through to process insulating barrier outer surface simultaneously, fit tolerance between the through hole II that can control insulating barrier external diameter and rotor core; Gap between obvious reduction screw rod and the through hole II of rotor core, the shaping rear intensity of insulating barrier is far above insulating sleeve, and the utility model is specially adapted to the tension of motor rotor core.
2, the utility model improves screw rod and isolate with the insulation being tightened up rotor core section, and when rotor block flies ease, maintenance rotor core does not produce slippage simultaneously.
3, the utility model effectively prevents the dust accumulation that causes greatly due to gap, and whole apparatus structure is simple, meet rotor core compress requirement cause stretch after insulation property reliable.
4, the utility model adopts described insulating barrier to be the wrapped insulated binding band in screw surface, and insulated binding band is easy for installation, is convenient to realize interference fit or interference fits.
5, structure of the present utility model is owing to being interference fit or interference fits between insulating barrier and screw rod, when practical operation, the through hole II of rotor core does not need the through hole I offering into prior art so large, there will not be the larger gap I produced between screw rod and insulating sleeve in prior art, and the gap III produced between the inwall of the through hole of insulating barrier and rotor core is also significantly less than the larger gap II produced between through hole I 4 and insulating sleeve 3 in prior art.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the enlarged drawing at the utility model b place.
Fig. 3 is the utility model B-B cut-away view.
Fig. 4 is the existing insulation take-up device structural representation be applied on motor stator.
Fig. 5 is the enlarged drawing at a place.
Fig. 6 is A-A cut-away view.
Mark in figure: 1, screw rod, 2, stator core, 3, insulating sleeve, 4, through hole I, 5 gap I, 6, gap II, 7, rotor core, 8, insulating barrier, 9, through hole II, 10, gap III.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
Embodiment 1:
A kind of insulation take-up device of rotor, comprise screw rod 1, coordinate with rotor core 7 in the through hole that described screw rod 1 inserts rotor core 7, screw rod 1 surface of that section coordinated with rotor core 7 is provided with insulating barrier 8, described insulating barrier 8, between the inwall of the through hole II 9 of screw rod 1 and rotor core 7, is interference fit between insulating barrier 8 and screw rod 1.
In the present embodiment, described insulating barrier 8 is the wrapped insulated binding band in screw surface.
In the present embodiment, between the inwall of the through hole II 9 of described insulating barrier 8 and rotor core 7, there is gap III 10.
Embodiment 2:
A kind of insulation take-up device of rotor, comprise screw rod 1, coordinate with rotor core 7 in the through hole that described screw rod 1 inserts rotor core 7, screw rod 1 surface of that section coordinated with rotor core 7 is provided with insulating barrier 8, described insulating barrier 8, between the inwall of the through hole II 9 of screw rod 1 and rotor core 7, is interference fit between insulating barrier 8 and screw rod 1.
In the present embodiment, described insulating barrier 8 is the wrapped insulated binding band in screw surface.
In the present embodiment, between the inwall of the through hole II 9 of described insulating barrier 8 and rotor core 7, there is gap III 10.
Embodiment 3:
A kind of insulation take-up device of rotor, comprise screw rod 1, coordinate with rotor core 7 in the through hole that described screw rod 1 inserts rotor core 7, screw rod 1 surface of that section coordinated with rotor core 7 is provided with insulating barrier 8, described insulating barrier 8, between the inwall of the through hole II 9 of screw rod 1 and rotor core 7, is interference fits between insulating barrier 8 and screw rod 1.
In the present embodiment, described insulating barrier 8 is the wrapped insulated binding band in screw surface.
In the present embodiment, between the inwall of the through hole II 9 of described insulating barrier 8 and rotor core 7, there is gap III 10.
Embodiment 4:
Be with the difference of embodiment 1, embodiment 2, embodiment 3: whole screw rod 1 surface is provided with insulating barrier 8.
All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. the insulation take-up device of a rotor, comprise screw rod (1), coordinate with rotor core (7) in the through hole (9) of described screw rod (1) insertion rotor core (7), it is characterized in that: screw rod (1) surface of that section at least coordinated with rotor core (7) is provided with insulating barrier (8), described insulating barrier (8) is positioned between the inwall of through hole (9) of screw rod (1) and rotor core (7), is interference fit or interference fits between insulating barrier (8) and screw rod (1).
2. the insulation take-up device of a kind of rotor according to claim 1, is characterized in that, described insulating barrier (8) is the wrapped insulated binding band surperficial at screw rod (1).
3. the insulation take-up device of a kind of rotor according to claim 1, is characterized in that, has gap III (10) between the inwall of the through hole (9) of described insulating barrier (8) and rotor core (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831488.2U CN205141862U (en) | 2015-10-26 | 2015-10-26 | Electric motor rotor's insulating straining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831488.2U CN205141862U (en) | 2015-10-26 | 2015-10-26 | Electric motor rotor's insulating straining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205141862U true CN205141862U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520831488.2U Active CN205141862U (en) | 2015-10-26 | 2015-10-26 | Electric motor rotor's insulating straining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205141862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727746A (en) * | 2019-01-07 | 2019-05-07 | 中国科学院合肥物质科学研究院 | Superconducting coil tightening regulator in a kind of superconductive current limiter |
-
2015
- 2015-10-26 CN CN201520831488.2U patent/CN205141862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727746A (en) * | 2019-01-07 | 2019-05-07 | 中国科学院合肥物质科学研究院 | Superconducting coil tightening regulator in a kind of superconductive current limiter |
| CN109727746B (en) * | 2019-01-07 | 2020-12-25 | 中国科学院合肥物质科学研究院 | Superconducting coil tensioning adjusting device in superconducting current limiter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |