CN108448831B - Construction method for integral rigidity reinforcing structure of end part of generator stator - Google Patents
Construction method for integral rigidity reinforcing structure of end part of generator stator Download PDFInfo
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- CN108448831B CN108448831B CN201810228612.4A CN201810228612A CN108448831B CN 108448831 B CN108448831 B CN 108448831B CN 201810228612 A CN201810228612 A CN 201810228612A CN 108448831 B CN108448831 B CN 108448831B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
- H02K15/0062—Manufacturing the terminal arrangement per se; Connecting the terminals to an external circuit
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Abstract
The invention aims to provide a construction method of an integral rigidity reinforcing structure of a generator stator end part. The coil bar nose end is tightened in a whole circle through a technical binding band, a glass strand reinforcing ring is wound on the insulation box in a whole circle along the outer diameter of the insulation box, an outer ring butt insulation wedge block is wedged along the axial direction of a generator, binding of glass strands soaked in room-temperature epoxy resin adhesive is utilized, an inner ring butt insulation wedge block is wedged along the axial direction of the generator, a liner polyester felt soaked in the room-temperature epoxy resin adhesive is arranged between an inner ring butt insulation wedge block and an original glass strand binding structure between the insulation box and the insulation box, binding and curing are carried out on the inner ring butt insulation wedge block and the original glass strand binding structure between the insulation box, the stator end insulation box is reached, namely the stator winding nose end is formed into an integral rigid annular structure, the integral rigidity of the end portion of a stator winding of the generator is far larger than that of the original structure, and.
Description
The technical field is as follows:
the invention relates to a construction method of a generator stator end integral rigidity reinforcing structure.
Background art:
the end part mode of a stator of the turbonator and the natural frequency of a lead have great influence on the safe operation of the turbonator, a bipolar generator with the frequency of 50Hz is acted by elliptical 100Hz electromagnetic force in the operation process, and if the natural frequency of the elliptical mode of the end part of the stator is equal to or close to 100Hz and the response is large, the end part can possibly resonate, so that large vibration is generated, the end part of the whole winding is loose, the mechanical fatigue of a winding bar is finally caused, and the normal operation of the generator set is influenced; therefore, the overall elliptical natural frequency of the stator end with relatively large response needs to be avoided by 100Hz as much as possible, the stator end is assembled finely and complicated, the assembly is mainly completed manually by manpower at present, the natural frequency of the end has certain uncertain factors, and in addition, since the end conforming and banding material is also affected by ambient temperature, resulting in the possibility of the overall natural frequency of the final end deviating from the design value, the generator will, during operation of the power plant, the temperature environment at the end part is changed, and the end part is acted by various exciting forces, so that the integral natural frequency of the end part is changed, in the generator maintenance process, the natural frequency which does not meet the requirement appears in the integral vibration mode of the end part of the stator which meets the requirement originally, according to the national standard and the requirement of the national power company on the countermeasure, the integral modal natural frequency of the end part which does not meet the requirement needs to be processed; most of the past articles only discuss the analysis and test method of the vibration mode of the stator winding end, or only indicate the processing direction of the elliptical natural frequency which does not meet the requirements, and do not provide a specific method for changing the unqualified natural frequency of the winding mode;
in order to achieve the effect of strengthening the integral rigidity of the end part of the stator of the generator, a new integral rigidity strengthening structure of the end part of the stator is provided, the integral rigidity strengthening structure of the end part of the stator is implemented on the structure which is assembled, the strengthening structure can be tightly connected with the original structure of the generator only by constructing according to the method provided by the invention to form a firm integral rigid annular structure, so that the integral rigidity of the end part of the winding of the stator is far greater than that of the original structure, thereby greatly improving the integral inherent frequency of the end part of the winding of the stator of the generator, otherwise, a gap is generated between the integral rigidity strengthening structure of the end part of the stator and the original structure of the generator, the structural integrity is reduced, the frequency improving.
The invention content is as follows: the invention aims to provide a construction method of an integral rigidity reinforcing structure of a stator end part of a generator, which comprises the steps of tightening a coil bar nose end by a whole circle through a technical binding band, winding a glass strand reinforcing ring on an insulation box by the whole circle along the outer diameter of the insulation box, wedging an outer ring butt insulation wedge block along the axial direction of the generator, binding glass strands with epoxy resin binder soaked at room temperature, wedging an inner ring butt insulation wedge block along the axial direction of the generator, matching polyester felt padded with epoxy resin binder soaked at room temperature between the inner ring butt insulation wedge block and an insulation box raw glass strand binding structure, binding and curing the inner ring butt insulation wedge block and the insulation box raw glass strand binding structure to achieve the purpose of integral wedge curing of the insulation box at the end part of the stator, namely the farthest end part of a cantilever, and finally forming a firm integral rigid annular structure at the insulation box at the end part of the stator, the integral rigidity of the end part of the stator winding is far larger than that of the original structure, so that the integral natural frequency of the end part of the stator winding of the generator is greatly improved, the unqualified elliptical natural frequency of the end part of the stator of the generator meets the qualified requirement, the requirement on the service life of the generator is ensured, and the generator is safe to operate.
The technical scheme of the invention is as follows: a construction method for an integral rigidity reinforcing structure of a generator stator end part comprises the following steps:
1) a preliminary preparation step: the thickness of the outer ring butt-joint insulation wedge block is designed and processed by thinning 2mm on one side according to the designed gap between two adjacent insulation boxes at the position of the outer ring butt-joint insulation wedge block, the thickness of the inner ring butt-joint insulation wedge block is designed and processed by thinning 2mm on one side according to the designed gap between two adjacent insulation boxes at the position of the inner ring butt-joint insulation wedge block, holes are formed in the middle of the outer ring butt-joint insulation wedge block and the inner ring butt-joint insulation wedge block, the outer ring conformal polyester felt with the thickness of 3mm, the inner ring conformal polyester felt and the liner polyester felt are soaked in room-temperature epoxy resin binder, and glass fiber bundles are;
2) the construction process of the outer diameter glass strand reinforcing ring of the insulating box comprises the following steps: tightening a whole loop of the nose end of the winding bar along the outer diameter direction of the insulation box by using a process binding band, winding a plurality of glass tows of room-temperature epoxy resin binder around the outer diameter of the insulation box to form a glass tow reinforcing ring, ensuring that the contact width of the glass tow reinforcing ring and the insulation box is not less than 100mm, the thickness of the glass tow reinforcing ring is not less than 10mm, and ensuring that the glass tow reinforcing ring is positioned in the middle of the insulation box along the axial direction of the generator;
3) and (3) outer ring butt insulation wedge block binding construction process: after the glass strand reinforcing rings are completely cured, removing the process binding bands, wedging outer ring butt-joint insulating wedges between two adjacent insulating boxes along the axial direction of the generator, matching the contact surfaces of the outer ring butt-joint insulating wedges and the insulating boxes with outer ring conformal polyester felts padded with room-temperature epoxy resin adhesives with the thickness of 3mm, ensuring that the compression amount of the outer ring conformal polyester felts is not less than 50%, and then binding the outer ring butt-joint insulating wedges and the outer ring conformal polyester felts with the glass strand reinforcing rings at the outer diameter parts of the cured insulating boxes by using the glass strands padded with the room-temperature epoxy resin adhesives to form an outer ring binding structure;
4) and (3) inner ring butt-joint insulated wedge block binding construction process: before the outer ring butt-joint insulating wedge block binding structure is cured, an inner ring butt-joint insulating wedge block at the inner diameter of an insulating box is wedged between two adjacent insulating boxes along the axial direction of a generator, an inner ring conformal polyester felt which is 3mm thick and is impregnated with room-temperature epoxy resin adhesive is arranged between the contact surface of the inner ring butt-joint insulating wedge block and the insulating box, the compression amount of the inner ring conformal polyester felt is not less than 50%, a liner polyester felt which is 3mm thick and is impregnated with the room-temperature epoxy resin adhesive is arranged between the inner ring butt-joint insulating wedge block and the original binding structure of the insulating box, and then the inner ring butt-joint insulating wedge block, the inner ring conformal polyester felt and the original binding structure between the liner polyester felt and the insulating box are bound tightly by glass tows which are impregnated with.
The technical effects are as follows: the end part structure of the generator stator is a cantilever beam structure, a nose end insulation box is positioned at the farthest end of the cantilever beam, a process binding band is used for tightening the nose end of a coil bar in advance and then winding a glass fiber bundle soaked with a room-temperature epoxy resin binder in a whole circle, the process binding band is removed after the glass fiber bundle is cured, the outer diameter of the insulation box is equal to that a tightening ring is additionally arranged along the outer diameter of the insulation box after the glass fiber bundle soaked with the room-temperature epoxy resin binder is cured, and the integral natural frequency of the end part; the reinforcing ring is in close contact with the insulation box to achieve the effect of hooping the insulation box, after the process binding band is removed, the elasticity of the end part coil bar is released, the whole ring structural integrity of the insulation box at the end part of the generator stator is stronger, meanwhile, the reinforcing ring plays the effect of restraining the nose end of the coil bar, the phenomenon that the nose end of the coil bar is integrally diverged and deformed in the subsequent process that the inner ring butt insulation wedge block and the outer ring butt insulation wedge block are wedged into the insulation boxes is avoided, if the measure of using the process binding band to tighten the insulation boxes in advance is not adopted, the glass fiber bundles are only wound at the outer diameter part of the insulation boxes, the insulation boxes at the end part of the stator are integrally formed, but the glass fiber bundles have no tightening effect on the insulation boxes, the integrity of the insulation boxes at the end part of the stator is not strong, after the reinforcing ring is solidified, the outer ring butt insulation wedge the outer ring insulation wedges into the insulation, the rigidity of the insulating box at the end part of the stator is improved; wedging an inner ring butt insulation wedge block at the inner diameter of the insulation box to tighten the inner diameter of the insulation box, extruding an outer ring butt insulation wedge block along the inner diameter direction of the insulation box, and equivalently, respectively adding a tightening ring at the inner and outer diameters of the insulation box to form two tight annular structures and finally form a high-rigidity end structure; the inner ring butt insulation wedge block and the outer ring butt insulation wedge block are bound and fixed by glass fiber bundles soaked in room temperature epoxy resin adhesive, the integrity of the end part structure of the stator winding is further enhanced, the abrasion and the sliding of the integral reinforcing structure of the end part of the stator in the running process of the generator are prevented, and the integral natural frequency of the end part of the stator winding is improved by over 20Hz after the construction according to the method.
Description of the drawings:
FIG. 1 is a schematic view of a glass strand reinforcing ring construction.
FIG. 2 is a schematic diagram of the construction of the outer ring butt insulation wedge.
FIG. 3 is a schematic diagram of the finished binding structure of the outer ring.
FIG. 4 is a schematic view of the construction of the inner ring butt insulation wedge.
FIG. 5 is a schematic representation of the completion of the construction according to the present invention.
The specific implementation mode is as follows:
the invention provides a construction method for a whole rigidity reinforcing structure of a generator stator end part, which is mainly characterized in that: the outer side of each insulation box 6 is wound with a glass strand reinforcing ring 1, an outer ring butt insulation wedge block 2 is arranged in an outer side gap between adjacent insulation boxes 6, an outer ring conformal polyester felt 7 is arranged between the outer ring butt insulation wedge block 2 and the contact surface of each insulation box, and the outer ring butt insulation wedge block 2 and the outer ring conformal polyester felt 7 are connected with the glass strand reinforcing rings 1 through outer ring binding structures 11; an inner ring butt-joint insulation wedge block 3 is arranged in an inner side gap between adjacent insulation boxes 6, an inner ring conformal polyester felt 9 is arranged between the contact surfaces of the inner ring butt-joint insulation wedge blocks 3 and the insulation boxes between the insulation boxes, a liner polyester felt 10 is arranged between the inner ring butt-joint insulation wedge blocks 3 and original binding structures 5 of the insulation boxes 6, and the inner ring butt-joint insulation wedge blocks 3, the inner ring conformal polyester felt 9 and the liner polyester felt 10 are connected with the original binding structures 5 between the insulation boxes 6 through inner ring binding structures 12; the integral rigidity strengthening structure of the end part of the stator is implemented on the assembled structure, the integral rigidity strengthening structure of the end part of the stator of the generator can be tightly connected with the original structure of the generator only by constructing according to the method provided by the invention, and a firm integral rigidity ring-mounting structure is formed at the nose end of the end part of the stator winding, so that the integral rigidity of the end part of the stator winding is far higher than that of the original structure, thereby greatly improving the integral natural frequency of the end part of the stator winding of the generator, otherwise, a gap is generated between the integral rigidity strengthening structure of the end part of the stator and the original structure of the generator, the structural integrity is reduced, the frequency improving effect cannot be achieved.
The construction method of the integral rigidity reinforcing structure at the end part of the generator stator comprises the following steps:
a preliminary preparation step: the thickness of the outer ring butt-joint insulation wedge block 2 is designed and processed according to the design gap unilateral thinning by 2mm between two adjacent insulation boxes 6 at the position of the outer ring butt-joint insulation wedge block, the thickness of the inner ring butt-joint insulation wedge block 3 is designed and processed according to the design gap unilateral thinning by 2mm between two adjacent insulation boxes 6 at the position of the inner ring butt-joint insulation wedge block 3, namely, the thickness of the outer ring butt-joint insulation wedge block 2 and the thickness of the inner ring butt-joint insulation wedge block 3 are both 2mm smaller than the gap unilateral thinning of two adjacent insulation boxes 6 and are used for filling an outer ring conformal polyester felt 7 and an inner ring conformal polyester felt 9, a round hole is arranged between the outer ring butt-joint insulation wedge block 2 and the inner ring butt-joint insulation wedge block 3 to reduce the weight of the outer ring butt-joint insulation wedge block 2 and the inner ring butt-joint insulation wedge block 3, the outer ring conformal polyester felt 7, the inner ring, soaking the glass fiber bundles in a room-temperature epoxy resin adhesive;
the construction process of the insulation box outer diameter glass strand reinforcing ring 1 is as follows: as shown in fig. 1, the coil bar nose end is completely tightened by the process bandage 4 along the outer diameter direction of the insulation box 6, namely, the process bandage is wound on the coil bar nose end in a whole circle, then the process bandage is tightened, and the tightened coil bar nose end forms elastic force expanding outwards; the method is characterized in that a plurality of glass tows of room temperature epoxy resin adhesive are wound on the outer diameter of an insulation box 6 in a whole circle to form a glass tow reinforcing ring 1, the contact width of the glass tow reinforcing ring 1 and the insulation box is ensured to be not less than 100mm, the thickness of the glass tow reinforcing ring is not less than 10mm, the glass tow reinforcing ring 1 is ensured to be positioned in the middle of the insulation box 6 along the axial direction of a generator, the glass tow reinforcing ring 1 is in close contact with the insulation box 6 to achieve the effect of the stirrup insulation box 6, meanwhile, the arrangement of the glass tow reinforcing ring avoids the whole divergent deformation of the nose end of a winding bar formed in the process that a subsequent outer ring butt-joint insulation wedge block 2 and an inner ring butt-joint insulation wedge block 3 are wedged between adjacent insulation boxes 6, if a measure that a process binding belt 4 is used for tightening the insulation box 6 in advance is not adopted, the glass tows of the room, however, the glass fiber bundles dipped in the room-temperature epoxy resin adhesive have no tightening effect on the insulation box 6, and the integrity of the insulation box 6 at the end part of the stator is not strong.
And 2, outer ring butt-joint insulating wedge block binding construction process: as shown in fig. 2, after the glass fiber bundle reinforcing ring 1 is completely cured, the process bandage 4 is removed, after the process bandage 4 is removed, the elasticity of the end bar is released, but the end bar is bound by the glass fiber bundle reinforcing ring 1, the insulation box is tightly contacted with the glass fiber bundle reinforcing ring 1, and at the moment, the end part of the generator is integrally reinforced under the action of the cured glass fiber bundle reinforcing ring; wedging an outer ring butt-joint insulation wedge block 2 between two adjacent insulation boxes 6 along the axial direction of the generator, matching an outer ring conformal polyester felt 7 padded with room-temperature epoxy resin adhesive of 3mm thickness on the contact surface of the outer ring butt-joint insulation wedge block 2 and the insulation boxes 6, ensuring that the outer ring conformal polyester felt 7 does not exceed the two side edges of the insulation boxes along the axial direction of the generator, wherein the compression amount is not less than 50%, the outer ring conformal polyester felt 7 enables the contact between the outer ring butt-joint insulation wedge block 2 and the insulation boxes 6 to be changed from point or line contact into surface contact, 50% of the compression amount can ensure that the outer ring butt-joint insulation wedge block 2 and the insulation boxes 6 are in close and reliable contact, the outer ring butt-joint insulation wedge block 2 and the outer ring butt-joint insulation wedge block 7 are not firmly fixed due to excessive epoxy resin adhesive overflowing, and after the working procedures are finished, as shown in figure 3, glass tows immersed in the room-temperature epoxy resin adhesive are used for The glass strand reinforcing ring 1 at the outer diameter of the box is tightly bound, the glass strands are bound for at least 20 circles, the binding thickness is ensured to be uniform, an outer circle binding structure 11 is formed, the structural integrity of the whole circle at the insulating box 6 at the end part of the generator stator is reinforced again, and the rigidity at the insulating box at the end part of the stator is improved;
and (3) binding construction process of the inner ring butt-joint insulation wedge block: as shown in figure 4, before the binding structure of the outer ring butt-joint insulation wedge block 2 at the outer diameter of the insulation box is cured, the inner ring butt-joint insulation wedge block 3 at the inner diameter of the insulation box is wedged between adjacent insulation boxes 6 along the axial direction of the generator, an inner ring conformal polyester felt 9 which is 3mm thick and is soaked in room temperature epoxy resin adhesive is arranged between the contact surfaces of the inner ring butt-joint insulation wedge block 3 and the insulation boxes 6, the inner ring conformal polyester felt 9 does not exceed the edges of the two sides of the insulation box along the axial direction of the generator, the compression amount is not less than 50 percent, the contact between the inner ring butt-joint insulation wedge block 3 and the insulation boxes 6 is changed from point contact or line contact into surface contact by the inner ring conformal polyester felt 9, the 50 percent compression amount can ensure that the inner ring butt-joint insulation wedge block 3 and the insulation boxes 6 are in close and reliable contact, and the phenomenon that the inner ring conformal, a cushion polyester felt 10 which is 3mm thick and is soaked with room temperature epoxy resin adhesive is arranged between the inner ring butt-joint insulation wedge block 3 and the original binding structure 5 of the insulation box 6, so that the cushion polyester felt 10 does not exceed the edges of two sides of the insulation box along the axial direction of the generator, the compression amount is not less than 30%, the cushion polyester felt 10 is much thicker than the inner ring conformal polyester felt, and the compression amount is selected to be 30%; after the above steps are completed, as shown in fig. 5, the original binding structure 5 between the inner ring butt insulation wedge 3, the inner ring polyester felt 9 and the liner polyester felt 10 and the insulation box 6 is bound tightly by using glass tows of epoxy resin binder at room temperature, the glass tows are bound for at least 20 circles, the binding thickness is ensured to be uniform, an inner ring binding structure 12 is formed, the inner diameter of the insulation box 6 is wedged into the inner ring butt insulation wedge 3, the inner diameter of the insulation box 6 is tightened, the outer ring butt insulation wedge 2 is extruded along the inner diameter direction of the insulation box, which is equivalent to that one tightening ring is respectively added at the inner diameter and the outer diameter of the insulation box 6, two tight ring structures are formed, and finally a high-rigidity end structure is formed; and the glass fiber bundles soaked in room temperature epoxy resin adhesive are used for binding and fixing the inner ring butt insulation wedge 3 and the outer ring butt insulation wedge 2, so that the integrity of the end part structure of the stator winding is further enhanced, and the abrasion and the sliding of the integral rigidity reinforcing structure of the end part of the stator in the running process of the generator are prevented.
Claims (1)
1. A construction method for an integral rigidity strengthening structure of an end part of a generator stator is characterized by comprising the following steps: the method comprises the following steps:
1) a preliminary preparation step: the thickness of the outer ring butt-joint insulation wedge block (2) is designed and processed by thinning 2mm on one side according to the designed clearance between two adjacent insulation boxes (6) at the position of the outer ring butt-joint insulation wedge block (2), the thickness of the inner ring butt-joint insulation wedge block (3) is designed and processed by thinning 2mm on one side according to the designed clearance between two adjacent insulation boxes (6) at the position of the inner ring butt-joint insulation wedge block (3), holes are formed in the middles of the outer ring butt-joint insulation wedge block (2) and the inner ring butt-joint insulation wedge block (3), the outer ring conformal polyester felt (7), the inner ring conformal polyester felt (9) and the liner polyester felt (10) with the thickness of 3mm are soaked with room-temperature epoxy resin adhesive, and the glass fiber bundles;
2) the construction process of the insulation box outer diameter glass strand reinforcing ring (1) is as follows: tightening the whole loop of the nose end of the winding bar along the outer diameter direction of the insulation box (6) by using a technical binding band (4), winding the whole loop of a plurality of glass tows of epoxy resin binder at the immersed room temperature on the outer diameter of the insulation box (6) to form a glass tow reinforcing ring (1), ensuring that the contact width of the glass tow reinforcing ring (1) and the insulation box (6) is not less than 100mm and the thickness is not less than 10mm, and ensuring that the glass tow reinforcing ring (1) is positioned in the middle of the insulation box (6) along the axial direction of the generator;
3) the outer ring butt insulation wedge block (2) binding construction process comprises the following steps: after the glass strand reinforcing rings (1) are completely cured, removing the process binding bands (4), wedging outer ring butt-joint insulating wedges (2) between two adjacent insulating boxes (6) along the axial direction of the generator, matching the contact surfaces of the outer ring butt-joint insulating wedges (2) and the insulating boxes (6) with outer ring conformal polyester felts (7) padded with room-temperature epoxy resin adhesives with the thickness of 3mm, ensuring that the compression amount of the outer ring conformal polyester felts (7) is not less than 50%, and then binding the outer ring butt-joint insulating wedges (2) and the outer ring conformal polyester felts (7) with the glass strand reinforcing rings (1) at the outer diameters of the cured insulating boxes by using the glass strands padded with the room-temperature epoxy resin adhesives to form outer ring binding structures (11);
4) the inner ring butt-joint insulation wedge block (3) binding construction process comprises the following steps: before the outer ring butt-joint insulating wedge block binding structure (11) is cured, an inner ring butt-joint insulating wedge block (3) at the inner diameter of an insulating box is wedged between two adjacent insulating boxes (6) along the axial direction of a generator, an inner ring conformal polyester felt (9) which is 3mm thick and is soaked with room temperature epoxy resin adhesive is arranged between the contact surfaces of the inner ring butt-joint insulating wedge block (3) and the insulating boxes (6), the compression amount of the inner ring conformal polyester felt (9) is ensured to be not less than 50%, a liner polyester felt (10) which is 3mm thick and is soaked with the room temperature epoxy resin adhesive is arranged between the inner ring butt-joint insulating wedge block (3) and the original binding structure (5) of the insulating boxes (6), and then the inner ring butt-joint insulating wedge block (3) is clamped by glass fiber, the inner ring conformal polyester felt (9) and the original binding structure (5) between the liner polyester felt (10) and the insulating box (6) are bound tightly to form an inner ring binding structure (12).
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| CN201810228612.4A CN108448831B (en) | 2018-03-20 | 2018-03-20 | Construction method for integral rigidity reinforcing structure of end part of generator stator |
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| CN201810228612.4A CN108448831B (en) | 2018-03-20 | 2018-03-20 | Construction method for integral rigidity reinforcing structure of end part of generator stator |
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| CN108448831B true CN108448831B (en) | 2020-02-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900025B (en) * | 2018-09-17 | 2020-02-11 | 哈尔滨电机厂有限责任公司 | Composite construction cage stator tip rigidity reinforcing structure |
| CN109067051A (en) * | 2018-09-17 | 2018-12-21 | 哈尔滨电机厂有限责任公司 | A kind of combination ripple spring washer form stator end reinforcement structure |
| CN109067050A (en) * | 2018-09-17 | 2018-12-21 | 哈尔滨电机厂有限责任公司 | A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure |
| CN109038909B (en) * | 2018-09-17 | 2020-01-07 | 哈尔滨电机厂有限责任公司 | Rigidity-variable composite structure cage-shaped stator end reinforcing structure |
| CN112968576B (en) * | 2021-04-13 | 2022-10-25 | 哈尔滨电机厂有限责任公司 | Turbine generator stator end nose end loosening treatment process method |
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| JP2009177943A (en) * | 2008-01-24 | 2009-08-06 | Mitsubishi Electric Corp | Stator of rotating electrical machine |
| CN101699727A (en) * | 2009-11-13 | 2010-04-28 | 湘潭电机股份有限公司 | Motor stator coil end part fixing method |
| CN205070645U (en) * | 2015-11-12 | 2016-03-02 | 东方电气集团东风电机有限公司 | Whole VPI insulation system of motor stator |
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- 2018-03-20 CN CN201810228612.4A patent/CN108448831B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009177943A (en) * | 2008-01-24 | 2009-08-06 | Mitsubishi Electric Corp | Stator of rotating electrical machine |
| CN101699727A (en) * | 2009-11-13 | 2010-04-28 | 湘潭电机股份有限公司 | Motor stator coil end part fixing method |
| CN205070645U (en) * | 2015-11-12 | 2016-03-02 | 东方电气集团东风电机有限公司 | Whole VPI insulation system of motor stator |
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