CN205283269U - Stator of generator - Google Patents
Stator of generator Download PDFInfo
- Publication number
- CN205283269U CN205283269U CN201521141053.1U CN201521141053U CN205283269U CN 205283269 U CN205283269 U CN 205283269U CN 201521141053 U CN201521141053 U CN 201521141053U CN 205283269 U CN205283269 U CN 205283269U
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- Prior art keywords
- stator
- yoke portion
- winding
- core
- generator according
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000004804 winding Methods 0.000 claims abstract description 38
- 238000009423 ventilation Methods 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 description 10
- 239000003973 paint Substances 0.000 description 9
- 238000002386 leaching Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 108010064245 urinary gonadotropin fragment Proteins 0.000 description 1
Abstract
An embodiment of the utility model provides a stator of generator. This stator of generator includes a plurality of stator unit, and stator unit includes module unshakable in one's determination and set up the winding in module unshakable in one's determination, and module unshakable in one's determination includes stator core, and stator core has yoke portion and fixed at least one tooth portion that sets up in yoke portion, is equipped with a winding in each tooth portion the one -to -one, and the axial that yoke portion follows the stator is equipped with the recess, is equipped with the retainingf key in the recess, is provided with the mounting hole on the retainingf key. The fixed connection with the support can be realized to the retainingf key of the yoke portion of this stator bottom for the manufacture is more simple, effective reduce cost.
Description
Technical field
The utility model relates to generator techniques, particularly relates to the stator of a kind of generator.
Background technology
Along with the single-machine capacity of aerogenerator increases gradually, direct-drive permanent magnet wind power generator diameter is increasing, not only that the requirement of processing units is also more and more higher, and correspondingly transportation cost increases, and cannot realize road transit. Meanwhile, also there are some problems in generator stator of the prior art.
As shown in Figure 1, the stator 1 ' of distributed generator of the prior art is an overall circular ring structure, and it is formed at the upper lamination of support 2 ', rule and leaching paint. For large-scale direct wind-driven generator, stator 1 ' diameter is generally all more than 4 meters, and conventional overall stator 1 ' needs special bigger leaching paint equipment to carry out overall leaching paint, not only fabrication and installation are more loaded down with trivial details, if and certain coil damages, it is necessary to changing whole stator 1 ', financial loss is bigger.
As shown in Figure 2, the stator 1 ' of distributed generator of the prior art is primarily of laminated core 11 ', lap winding 12 ', the fixing key 13 ' of dovetail, tension screw rod 14 ' and radial ventilation channel-section steel 15 ' composition. Wherein, laminated core 11 ' be by fan-shaped siliconized plate vertically staggered lamination and become, certain angle staggered in the circumferential between every layer of siliconized plate. Laminated core 11 ' is an overall circular ring structure, can not dismount separately a certain group of siliconized plate.
In addition, taking of each lap winding 12 ' is structure interlaced, all linked with one another, all has upper and lower two lap winding 12 ' in each iron core slot. The lap winding of lower floor must be first installed during installation, then the lap winding on upper strata is installed; During dismounting, also must first remove the lap winding on upper strata, the lap winding 12 ' of lower floor could be removed, cause the stator 1 ' of distributed generator of the prior art to mount and dismount comparatively loaded down with trivial details, not easily operate.
Laminated core 11 ' is fixed with the fixing key 13 ' of dovetail diametrically, and structure is comparatively conventional, but the fixing key 13 ' requirement on machining accuracy of dovetail and cost are higher.
Tension screw rod 14 ' is commonly used to laminated core 11 ' axial compression. But tension screw rod 14 ' needs to do insulation processing, adds complex structure degree on the one hand, difficult in technique on the other hand, implementation result does not usually reach insulating requirements yet.
Ventilation steel channel 15 ' is generally used for forming radial ventilation road, makes cooling air flow through cooling lap winding 12 ' from ventilation duct. This kind of project organization not only increases the structure complexity of stator 1 ', also add generator axial length in addition, also correspondingly increases the consumption of magnet steel and copper.
In sum, there is many drawbacks in the stator 1 ' of distributed generator of the prior art, needs improvement badly.
Practical novel content
The purpose of this utility model is to provide the stator of a kind of aerogenerator, to solve the problem of the stator processing difficulty of generator of the prior art.
According to one side of the present utility model, the stator of a kind of generator is provided, comprise multiple stator unit, the winding that stator unit comprises iron core module and is arranged in iron core module, iron core module comprises stator core, at least one teeth portion that stator core has yoke portion and is fixedly installed in yoke portion, each teeth portion is provided with a winding correspondingly, yoke portion is axially arranged with groove along stator, is provided with fixing key in groove, and fixing key is provided with open holes.
Further, iron core module also comprises tooth pressing plate, and tooth pressing plate is fixedly installed on the two ends axially of stator core.
Further, groove is T-shaped groove, and fixing key is the T-shaped fixing key matched with T-shaped groove.
Further, fixing key is welded on groove place.
Further, the teeth portion of adjacent stator core is along the parallel setting of axis of stator.
Further, winding is annular, and the teeth portion of stator core is through the hollow parts of winding.
Further, two adjacent winding non-overlapping formulas are arranged.
Further, the yoke portion of stator core is provided with the first ventilation hole that at least one runs through yoke portion along the axis in yoke portion.
Further, the teeth portion of stator core is provided with the 2nd ventilation hole that at least one runs through teeth portion along the axis of teeth portion.
Further, in the yoke portion of stator core, side along the circumferential direction is provided with recess, and opposite side is provided with protuberance, and recess and the protuberance of adjacent two stator cores match.
Further, stator also comprises stator support, multiple stator unit is successively set on stator support along the circumference of stator support, and the surface matched with stator support of the stator core of each stator unit is provided with the woodruff-key radially protruded, and woodruff-key extends vertically.
Stator according to the generator that the utility model embodiment provides, fixing key bottom the yoke portion of this stator can realize the location with stator support, open holes on fixing key can realize and being fixedly connected with of stator support so that manufactures processing more simple, effectively reduces costs.
Accompanying drawing explanation
Fig. 1 illustrates stator of the prior art and support one-piece construction schematic diagram;
Fig. 2 illustrates stator structural representation of the prior art;
Fig. 3 illustrates the structural representation of the stator of the utility model embodiment;
Fig. 4 illustrates the perspective view of the partial stator unit module of the utility model embodiment;
Fig. 5 illustrates the axial sectional diagrammatical view illustration of the partial stator unit module of the utility model embodiment;
Fig. 6 illustrates the stator unit module of the utility model embodiment and the schematic diagram of the first mode of connection of support;
Fig. 7 illustrates the stator unit module of the utility model embodiment and the schematic diagram of support the 2nd kind of mode of connection;
Fig. 8 illustrates the first structural representation of adjacent two stator unit modules of the utility model embodiment;
Fig. 9 illustrates the 2nd kind of structural representation of adjacent two stator unit modules of the utility model embodiment.
Description of reference numerals:
1 ', stator; 2 ', support; 11 ', iron core; 12 ', lap winding; 13 ', the fixing key of dovetail; 14 ', screw rod is strained; 15 ', ventilation steel channel; 1, stator unit; 2, stator support; 21, bolt hole; 10, winding; 111, stator core; 111a, yoke portion; 111b, teeth portion; 113, fixing key; 113a, open holes; 110, woodruff-key; 115, weld seam; 11, iron core module; 114, tooth pressing plate; 112, groove; 116, the first ventilation hole; 117, the 2nd ventilation hole; 119, protuberance; 3, packing ring; 4, bolt; 51, parallel clearance.
Embodiment
Below in conjunction with accompanying drawing, exemplary embodiment of the present utility model is described in detail.
As shown in Figures 3 to 5, according to embodiment of the present utility model, the stator of generator comprises multiple stator unit 1, the winding 10 that stator unit 1 comprises iron core module 11 and is arranged in iron core module 11, iron core module 11 comprises stator core 111, at least one teeth portion 111b that stator core 111 has yoke portion 111a and is fixedly installed on yoke portion 111a, each teeth portion 111b is provided with a winding 10 correspondingly, yoke portion 111a is axially arranged with groove 112 along stator, it is provided with fixing key 113 in groove 112, fixing key 113 is provided with open holes 113a.
Stator being divided into multiple independent stator unit 1, each stator unit 1 is carried out independent processing, then assembles, the size of each stator unit 1 is little on the one hand, is convenient to processing, it is possible to reduce tooling cost, on the other hand, is also convenient to transport, it is possible to reduce transportation cost. Each stator unit 1 includes iron core module 11 and winding 10. Wherein, iron core module 11 mainly plays support and ligation, and iron core module 11 comprises stator core 111, and stator core 111 has the yoke portion 111a connected and installs the teeth portion 111b of winding 12. For the ease of being assembled by stator unit 1, yoke portion 111a arranges groove 112, groove 112 is provided with fixing key 113, fixing key 113 offers open holes 113a can be connected by fastening piece, it is to increase packaging efficiency.
Specifically, in the present embodiment, stator also comprises stator support 2, and multiple stator unit 1 is successively set on stator support 2 along the circumference of stator support 2.
During installation, owing to the fixing key 113 on yoke portion 111a being provided with open holes 113a, therefore, stator unit 1 is fixedly mounted on stator support 2 by the mode passing the open holes 113a on the fixing key 113 of stator support 2 and stator unit 1 by fastening piece, both ensured to install reliable, and improved again and convenient degree is installed.
Being provided with, on the surface matched with stator support 2 of the stator core 111 of each stator unit 1, the woodruff-key 110 radially protruded, woodruff-key 110 extends vertically.
The stator of this generator is the stator of direct-drive aerogenerator, and it has the stator unit 1 of modularization. The iron core module 11 of stator unit 1, except comprising stator core 111 and fixing key 113, also comprises tooth pressing plate 114 and weld seam 115 etc.
Wherein, stator core 111 is overrided to form vertically by fan-shaped siliconized plate, and the segmental core fragment of self-assembling formation independence, this kind of mode of production, without the need to whole stator core carries out loaded down with trivial details staggered lamination, operates easier, and technique is simpler.
Having groove 112 on the yoke portion 111a of the stator core 111 laminated, this groove 112 is for holding fixing key 113, and along the length direction of yoke portion 111a, groove 112 can arrange multiple, correspondingly, is provided with a fixing key 113 in each groove 112. This fixing key 113 can realize being fixedly connected with of stator unit 1 and stator support 2 so that manufactures processing more simple, effectively reduces costs.
Tooth pressing plate 114 is arranged on the end face at two ends axially of stator core 111. Tooth pressing plate 114 mainly compresses stator core 111 in this effect, prevents the teeth portion 111b of the stator core after lamination 111 from outwards opening.
Correspondingly, tooth pressing plate 114 is also provided with groove, this groove is corresponding with the groove 112 on stator core 111, when fixing key 113 is installed, the groove that the tooth pressing plate 114 that fixing key 113 inserts stator core 111 and its both ends of the surface is formed (leaves gap between the bottom land of groove and the root face of stator core 111), and at groove place, fixing key 113 is welded after by stator core 111 axial compression by utility appliance such as frock clamps and form weld seam 115 requirement of strength check (size of groove and fixing key 113 and the design of weld seam 115 need to meet). so, the weld seam 115 arranged vertically makes to define between stator core 111, tooth pressing plate 114 and fixing key 113 entirety, and guarantees stator core 111 axial pretightening. so instead of the tension screw rod 14 ' under prior art to the axial pretightening mode of iron core, therefore without the need to tension screw rod 14 ' carries out insulation processing again, (each tension screw rod 14 ' all needs to put insulation covering, implementation result does not usually reach insulating requirements), and (the axial hollow of the stator 1 ' of generator of the prior art is arranged to eliminate isolating bar, hollow part needs isolating bar to fill), simplify technique, two, compared with the fixing mode of key 13 ' fixing with the dovetail under prior art, the fixing key 13 ' working accuracy of dovetail is higher, and has the fixing key 113 of square structure, makes processing more simple, can effectively reduce costs.
As shown in Figure 7, it may be preferred that groove 112 is T-shaped groove, fixing key 113 is the T-shaped fixing key matched with T-shaped groove. During assembling, T-shaped fixing key can insert in T-shaped groove along the axis of stator unit 1, so, except weld seam 115 fixed groove 112 and fixing key 113, also add the constraint of T-shaped step to connect, the two load suffered by shared stator unit 1, can share weld seam 115 place and be subject to stress, performance of optimizing structure.
As shown in Figure 6 and Figure 7, when needing stator unit 1 and stator support 2 are installed, packing ring 3 and bolt 4 (stator support 2 is provided with the bolt hole 21 corresponding with the open holes 113a of fixing key 113) can be installed from the inner side of stator support 2, bolt 4 is made to be screwed in the open holes 113a on fixing key 113 by bolt hole 21, open holes 113a can be threaded hole, then stator unit 1 can be fixed on stator support 2 by pretension bolt 4. Owing to scene adopts packing ring 3 and bolt 4 can realize installing, required workpiece is few, and reduces technology difficulty, it is to increase working efficiency.
In conjunction with see Fig. 4, it may be preferred that being provided with radially protruding woodruff-key 110 on the surface that the stator support 2 with generator of stator unit 1 matches, this woodruff-key 110 extends vertically, it is for the circumference location on stator support 2 of stator unit 1.
As shown in Figure 8, when multiple stator unit 1 is installed, adjacent two stator units 1 can parallel be arranged, the structure mode of parallel setting is comparatively simple, namely between two adjacent stators unit 1, there is parallel clearance 51, make like this between adjacent two stator units 1 on radial and axial all without interference so that separate between stator unit 1, both can install by radial level when stator unit 1 is installed, it is possible to axially vertically install. Not high for the processing requirement of lifting and suspender like this, the handiness of installation can be improved, thus raise the efficiency.
The overall performance of the stator formed after multiple stator unit 1 is installed to stator support 2 to improve, adjacent two stator units 1 also can adopt the design of concavo-convex cooperation. Specifically, on the yoke portion 111a of stator unit 1, side along the circumferential direction is provided with recess, and its opposite side is provided with protuberance 119, and the recess of adjacent stators unit 1 and protuberance 119 are matched setting. So, owing to concaveconvex structure design makes to have radial constraint between adjacent stators unit 1, thus improve the one-piece construction performance of stator core 111.
In order to realize the modular design of the stator of whole generator, the winding 10 corresponding with stator core 111 has modularization structure accordingly. Specifically, the teeth portion 111b of each stator unit 1 is provided with winding 10 correspondingly. Namely multiple winding 10 forms the winding of the stator of generator. Wherein, winding 10 is for annular and is similar to ring-type track elements, and winding 10 is set on the teeth portion 111b of stator unit 1 correspondingly, and namely the teeth portion 111b of stator unit 1 is through the hollow parts of winding 10.
Preferably, the teeth portion 111b of adjacent stators unit 1, along the parallel setting of axis of stator, is convenient to suit winding 10 like this. For guaranteeing that winding 10 can dismount separately, two adjacent windings 10 take non-overlapping formula to arrange, namely separate, it does not have hand over folded, be convenient to realize the modularization installation and removal of stator winding like this.
There is stator core 111 and the winding 10 of modularization structure, it is assembled together again after facilitating each stator unit 1 leaching paint, reduce the requirement (stator of usual major diameter generator needs the leaching paint equipment of Large Copacity could soak paint) for leaching paint equipment, on the other hand, the stator of modularization is convenient when installation and removal, it is easy to operation, reduce the transport difficulty (scheme of whole Transporting taked usually by the stator of major diameter generator, implements difficulty bigger) of stator simultaneously.
For meeting the ventilation and heat demand of the generator stator of the present embodiment, the yoke portion 111a of stator unit 1 is provided with at least one first ventilation hole 116 running through yoke portion along the axis of yoke portion 111a. First ventilation hole 116 makes generator stator have the air channel of axially ventilation.
Except the first ventilation hole 116, on the teeth portion 111b of stator unit 1, (the teeth portion 111b of stator unit 1 has certain width) is provided with the 2nd ventilation hole 117 that at least one runs through teeth portion 111b along the axis of teeth portion 111b.
At this, the shape of the first ventilation hole 116 and/or the 2nd ventilation hole 117 can design according to actual demand, and the present embodiment does not limit at this.
Aeration structure in embodiment, instead of the scheme of ventilation steel channel 15 ' of the prior art. Because axially ventilating compared with the radial ventilation mode of ventilation steel channel 15 ', the axial length of stator shortens, to reduce the temperature contrast phenomenon of temperature inequality (stator can produce in the axial direction), thus decrease the consumption of magnet steel and copper, reduce material cost, simplify the structure of stator simultaneously.
The stator of generator that embodiment of the present utility model provides has that structure is simple, making and installation efficiency height, can reduce the advantages such as maintenance cost, can overcome the many drawbacks having the direct-drive permanent magnet wind power generator stator of major diameter at present and occurring.
The stator of the generator that the utility model provides has following technique effect:
One, the stator of modularization is compared with integrally-built stator, not only simply (each stator unit module can be overrided to form vertically by a kind of fan-shaped siliconized plate in making, the stator unit module of self-assembling formation independence, and without the need to whole stator core being carried out loaded down with trivial details staggered lamination), and by being arranged on, the fixing key bottom its yoke portion can realize and being fixedly connected with of support because of each stator unit module, make technique simple, mount and dismount convenient.
Two, the stator structure of modularization is bolted together after each stator unit module can carry out leaching paint again, and the requirement for leaching paint equipment reduces greatly.
The stator three, with modularization structure can improve versatility and the motor production efficiency of technology and pattern assembly equipment, reduce transportation cost, the expense of reprocessing reducing fault generator is (when certain coil damages, only need to remove and change a stator unit module, it is not necessary to change whole stator).
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; any it is familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model. Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (11)
1. the stator of a generator, it is characterized in that, comprise multiple stator unit (1), the winding (10) that described stator unit (1) comprises iron core module (11) and is arranged in described iron core module (11), described iron core module (11) comprises stator core (111), at least one teeth portion (111b) that described stator core (111) has yoke portion (111a) and is fixedly installed on described yoke portion (111a), each described teeth portion (111b) is provided with a described winding (10) correspondingly, described yoke portion (111a) is axially arranged with groove (112) along described stator, fixing key (113) it is provided with in described groove (112), described fixing key (113) is provided with open holes (113a).
2. the stator of generator according to claim 1, it is characterized in that, described iron core module (11) also comprises tooth pressing plate (114), and described tooth pressing plate (114) is fixedly installed on the two ends axially of described stator core (111).
3. the stator of generator according to claim 2, it is characterised in that, described groove (112) is T-shaped groove, and described fixing key (113) is the T-shaped fixing key matched with described T-shaped groove.
4. the stator of generator according to claim 1 or 3, it is characterised in that, described fixing key (113) is welded on described groove (112) place.
5. the stator of generator according to claim 1 and 2, it is characterised in that, the described teeth portion (111b) of adjacent described stator core (111) is along the parallel setting of axis of described stator.
6. the stator of generator according to claim 5, it is characterized in that, described winding (10) is annular, and the described teeth portion (111b) of described stator core (111) is through the hollow parts of described winding (10).
7. the stator of generator according to claim 6, it is characterised in that, two adjacent described winding (10) non-overlapping formulas are arranged.
8. the stator of generator according to claim 1 and 2, it is characterized in that, the described yoke portion (111a) of described stator core (111) is provided with at least one first ventilation hole (116) running through described yoke portion (111a) along the axis of described yoke portion (111a).
9. the stator of generator according to claim 1 and 2, it is characterized in that, the described teeth portion (111b) of described stator core (111) is provided with at least one the 2nd ventilation hole (117) running through described teeth portion (111b) along the axis of described teeth portion (111b).
10. the stator of generator according to claim 1 and 2, it is characterized in that, on the described yoke portion (111a) of described stator core (111), side along the circumferential direction is provided with recess, opposite side is provided with protuberance (119), and described recess and the described protuberance (119) of adjacent two described stator cores (111) match.
The stator of 11. generators according to claim 1 and 2, it is characterized in that, described stator also comprises stator support (2), described multiple stator unit (1) is successively set on described stator support (2) along the circumference of described stator support (2), being provided with, on the surface matched with described stator support (2) of the described stator core (111) of each described stator unit (1), the woodruff-key (110) radially protruded, described woodruff-key (110) extends vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521141053.1U CN205283269U (en) | 2015-12-31 | 2015-12-31 | Stator of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521141053.1U CN205283269U (en) | 2015-12-31 | 2015-12-31 | Stator of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283269U true CN205283269U (en) | 2016-06-01 |
Family
ID=56067805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521141053.1U Withdrawn - After Issue CN205283269U (en) | 2015-12-31 | 2015-12-31 | Stator of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205283269U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515230A (en) * | 2015-12-31 | 2016-04-20 | 北京金风科创风电设备有限公司 | Stator of generator |
| CN108471183A (en) * | 2018-04-25 | 2018-08-31 | 新疆金风科技股份有限公司 | Stator support, stator modules and modular stator |
| CN110514969A (en) * | 2019-07-29 | 2019-11-29 | 国网河北省电力有限公司电力科学研究院 | Electricity generator stator core insulation detection device and detection method |
-
2015
- 2015-12-31 CN CN201521141053.1U patent/CN205283269U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515230A (en) * | 2015-12-31 | 2016-04-20 | 北京金风科创风电设备有限公司 | Stator of generator |
| CN108471183A (en) * | 2018-04-25 | 2018-08-31 | 新疆金风科技股份有限公司 | Stator support, stator modules and modular stator |
| CN108471183B (en) * | 2018-04-25 | 2020-06-30 | 新疆金风科技股份有限公司 | Stator support, stator module and modular stator |
| CN110514969A (en) * | 2019-07-29 | 2019-11-29 | 国网河北省电力有限公司电力科学研究院 | Electricity generator stator core insulation detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160601 Effective date of abandoning: 20190423 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160601 Effective date of abandoning: 20190423 |