CN114567107A - Fixing device for rotor winding end part of variable-speed generator motor - Google Patents
Fixing device for rotor winding end part of variable-speed generator motor Download PDFInfo
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- CN114567107A CN114567107A CN202210157032.7A CN202210157032A CN114567107A CN 114567107 A CN114567107 A CN 114567107A CN 202210157032 A CN202210157032 A CN 202210157032A CN 114567107 A CN114567107 A CN 114567107A
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- inner support
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- 238000004804 winding Methods 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/51—Fastening of winding heads, equalising connectors, or connections thereto applicable to rotors only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention belongs to the technical field of variable-speed generator-motor accessories, and aims to solve the problems of complex structure, poor strength and insufficient ventilation and heat dissipation performance of a winding fixing scheme of the conventional variable-speed unit, in particular to a fixing device for a rotor winding end part of a variable-speed generator-motor, which comprises M groups of clamping structures which are equidistantly distributed along the circumferential direction; the clamping structure comprises an outer supporting strip, a radial connecting component, an inner support and an inner supporting strip arranged on the inner side of the inner support, wherein the outer supporting strip is vertically arranged on the outer side of the end part of the upper-layer winding of the rotor; the radial connecting component comprises N U-shaped bolts; the inner support is arranged in the rotor winding, the cantilever end of the U-shaped bolt sequentially penetrates through the outer supporting strip, a gap between the upper layer winding and the lower layer winding of the rotor, the inner support and the inner supporting strip, and the cantilever end of the U-shaped bolt is fixedly connected with the inner supporting strip so as to fix the winding; the fixing device can bear the centrifugal force generated by the rotation of the rotor, and can ensure good ventilation and cooling of the winding.
Description
Technical Field
The invention belongs to the technical field of variable-speed generator-motor accessories, and particularly relates to a fixing device for a rotor winding end part of a variable-speed generator-motor.
Background
The pumped storage power station is a supporting power supply for building modern smart grid peak regulation and frequency modulation, and is an important component for building a clean, low-carbon, safe, stable, economical and efficient modern power system. The construction and operation of pumped storage power stations in China last approximately 50 years, and the pumped storage power stations have gradually developed into pumped storage construction major countries with advanced levels in the world in construction, operation and maintenance and operation.
As a core equipment of the pumped storage unit, the generator motor needs to be frequently switched among four operation states of static, power generation, pumping and phase modulation and can be rapidly increased and decreased in load. The traditional pumped storage unit has relatively low adjusting speed in a power generation state, and the load cannot be adjusted in a pumped storage state, so that the application scene of the pumped storage unit in a power grid is limited. With the increasing number of grid-connected nuclear power and new energy units (wind power, solar energy and the like), the power grid needs to seek faster response capability, larger regulation capacity and more flexible operation mode to maintain stability. The variable-speed pumped storage generator motor changes the operation rotating speed of a unit by adjusting the working frequency of the rotor current, enlarges the range of the operating head to the lift ratio of the pump turbine, obtains the optimal performance index, and simultaneously reduces the cavitation erosion of the blades of the turbine and the abrasion of silt. The variable-speed pumped storage unit has the advantages of automatically tracking the frequency change of a power grid, adjusting active power at a high speed and the like, on one hand, the input power of a water pump can be adjusted according to the output process of new energy such as wind power and the like, the frequency of the power grid can be tracked more flexibly, and the utilization rate of the new energy is improved on the premise of ensuring the safe and stable operation of the power grid; on the other hand, the adjusting rate of the unit is improved, the output process of power supplies with poor stability such as wind power and the like can be better tracked, and therefore the impact of a new energy power supply on a power grid is reduced.
The main difference between the variable speed unit and the conventional constant speed unit is the structure of the rotor and the structure of the excitation system. The rotor winding of the variable speed unit adopts three-phase symmetrical double-layer windings, and a single winding, a sliding pad strip, a filling pad strip and a semiconductor slot liner are combined and fixed in a rotor slot. When the generator motor runs at high speed, the windings are subjected to large centrifugal force. Because the winding end part cannot be fixed by the slot wedge, the strength of the winding is difficult to bear the centrifugal force of the winding, a supporting structure is needed to fix the winding end part, and meanwhile, the good structural strength and ventilation and heat dissipation capacity are ensured, and the centrifugal force of the rotor rotating at a high speed and the heat dissipation performance of the end winding are met.
At present, two fixing structures of a thermal sleeve protective ring and a U-shaped bolt are mainly used for fixing the end part of a rotor winding of a speed change unit. For the fixing scheme of the thermal protection ring, although the structure of the end part of the rotor winding is simple, the structure has higher requirements on the process and the material, and the sealing performance is strong, so that the heat dissipation capacity is poor. For the U-shaped bolt structure, the opening is good, and the heat dissipation of the end winding is facilitated. However, due to the complex components, the U-shaped bolt is loosened or damaged frequently in actual work. Mainly manifested in the loosening of the U-shaped bolt, the damage of the single leg of the U-shaped bolt, and the complete damage of the whole U-shaped bolt. Once the screw is broken during the high speed rotation of the rotor, an irreversible safety accident is caused. In addition, the bolts of the cage-type construction are also parts in one piece, which can damage the stator winding heads as soon as they are broken and thrown out. Therefore, a scheme with higher safety factor, simpler installation and less influence on ventilation and heat dissipation of the end parts of the windings needs to be comprehensively considered, and the mechanical deformation and the thermal deformation of the upper and lower layers of windings are avoided.
Disclosure of Invention
In order to solve the problems of complex structure, poor strength and insufficient ventilation and heat dissipation performance of the winding fixing scheme of the existing variable speed unit, the invention provides a fixing device for the winding end part of a rotor of a variable speed generator motor, which comprises M groups of clamping structures, wherein the M groups of clamping structures are distributed at equal intervals along the circumferential direction;
the clamping structure comprises an outer supporting strip, a radial connecting component, an inner supporting strip and an inner support, wherein the outer supporting strip is vertically arranged on the outer side of the end part of the upper-layer winding of the rotor; the radial connecting component comprises N U-shaped bolts, and the N U-shaped bolts are horizontally arranged along the radial direction;
the inner support strip is arranged on the inner side of the inner support;
the inner support is arranged in the rotor winding, the cantilever end of the U-shaped bolt sequentially penetrates through the outer support strip, a gap between the upper layer winding and the lower layer winding of the rotor, the inner support and the inner support strip, and the cantilever end of the U-shaped bolt is fixedly connected with the inner support strip.
In some preferred embodiments, the inner support is a grid-like framework structure;
the U-shaped bolts are arranged corresponding to the vertical spokes of the latticed frame structure.
In some preferred embodiments, two cantilever ends of the U-shaped bolt and the inner supporting strip are screwed through a connector to abut against the outer supporting strip; and the two cantilever ends of the U-shaped bolt are provided with external thread sections.
In some preferred embodiments, the clamping structure further comprises a nut protection cover, and the nut protection cover is sleeved on the connecting piece and is vertically arranged;
the nut protection cover is fixedly connected with the inner support strip.
In some preferred embodiments, the N U-shaped bolts are positioned on the same vertical surface;
n U type bolt parallel equidistance sets up.
In some preferred embodiments, the outer support bar is a first plate-like structure arranged vertically; n groups of through holes are formed in the outer supporting strip and correspond to the N U-shaped bolts.
In some preferred embodiments, the inner supporting bar is a second plate-shaped structure which is vertically arranged; the inner supporting strip N sets of round holes, and N sets of the round holes are corresponding to the U-shaped bolts, so that the N cantilever ends of the U-shaped bolts penetrate through the round holes.
In some preferred embodiments, the U-bolt is made of a non-magnetic material.
In some preferred embodiments, the inner support is a full round end structure;
the outer supporting strip is of a semi-cylindrical structure.
In some preferred embodiments, N ∈ [4,6 ]; m is more than N.
The invention has the beneficial effects that:
1) the fixing device for the winding end part of the rotor of the variable-speed generator-motor, disclosed by the invention, has the advantages of low installation process requirement, simple structure, high strength and increased air flow area, and is beneficial to ventilation and heat dissipation of the winding end part.
2) Although the U-shaped bolt disclosed in the prior art can realize better ventilation and heat dissipation, the operation and maintenance risks are high, once the bolt is broken in the operation process of the motor, the bolt rotating at high speed can fly to other parts or machines to cause other safety accidents.
3) The existing cage-type fixing structure adopts a radial bolt structure, and once a nut is loosened and thrown out by a rotor, the nut can directly damage a stator winding through a stator and rotor gap; according to the invention, the nut protection cover is used for covering the fixing pieces in the same vertical direction, and other external parts cannot be damaged even if a certain nut is loosened and falls off.
4) The inner support frame adopts a full-circle welding structure and has higher circumferential and radial strength, the inner support bars and the outer support bars which are distributed at equal intervals in the circumferential direction convert the centrifugal force of the winding into the tensile force of the U-shaped bolt, and the stress of the rotor winding is more uniform.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a front view of one embodiment of the present invention;
FIG. 2 is another angle schematic of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic view of a U-bolt of the present invention;
FIG. 5 is a schematic cross-sectional view of a single bolt location;
fig. 6 is a schematic view of the inner frame of the present invention;
FIG. 7 is a schematic view of a nut boot of the present invention;
FIG. 8 is a schematic illustration of an inner support strip of the present invention;
fig. 9 is a schematic view of an outer support bar in the present invention.
Description of reference numerals: 1. a nut protection cover; 2. an inner supporting bar; 3. a U-shaped bolt; 4. an outer support bar; 5. a screw; 6. a nut; 7. a lower layer winding; 8. an upper layer winding; 9. an inner support.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The invention is further illustrated by the following examples with reference to the accompanying drawings.
Referring to fig. 1 to 9, the present invention provides a fixing device for a winding end of a rotor of a variable speed generator-motor, which can bear the centrifugal force generated by the rotation of the rotor and ensure good ventilation cooling of the winding; the fixing device comprises M groups of clamping structures, wherein the M groups of clamping structures are distributed at equal intervals in the circumferential direction.
The clamping structure comprises an outer supporting strip 4, a radial connecting component, an inner supporting strip 2 and an inner bracket 9, wherein the outer supporting strip is vertically arranged on the outer side of the end part of an upper-layer winding 8 of the rotor and used for fixing the upper-layer winding and a lower-layer winding 7.
The radial connecting member includes N U-bolts 3, which are horizontally arranged in the radial direction. The outer side of the outer supporting strip is abutted against the inner side of the convex arc section of the U-shaped bolt so as to fix the end part of the U-shaped bolt.
The inner support strip is arranged on the inner side of the inner support; the inner support is arranged in the rotor winding, the cantilever end of the U-shaped bolt sequentially penetrates through the outer support strip, a gap between the upper layer winding and the lower layer winding of the rotor, the inner support and the inner support strip, and the cantilever end of the U-shaped bolt is fixedly connected with the inner support strip; at the moment, two cantilever ends of the U-shaped bolt and the inner supporting strip are screwed through the connecting piece to be abutted against the outer supporting strip, and the two cantilever ends of the U-shaped bolt are both provided with outer thread sections.
Wherein, the inner support is a grid-shaped frame structure; the U-shaped bolts are arranged corresponding to the vertical spokes of the latticed frame structure.
In the embodiment, the connecting piece is a nut 6, and two thread sections of the U-shaped bolt are screws 5 shown in the figure so as to be matched and fixed with the nut; through the setting of screw thread section, can adjust the fastening distance behind the component of wearing to establish in a flexible way, can guarantee again with the fixed of interior support bar.
Furthermore, the clamping structure also comprises a nut protection cover 1, and the nut protection cover is sleeved with the connecting piece and is vertically arranged; the nut protective cover is fixedly connected with the inner support strip. A nut protection cover can protect nuts of a plurality of parallel equidistant U-shaped bolts on the same inner supporting strip.
In this embodiment, through the setting of interior support bar, outer support bar, guarantee can not fly away because of unexpected cracked U type bolt, simultaneously through the setting of nut safety cover, guarantee that the nut accident drops and also can not fly away and cause secondary damage on other parts.
Specifically, in the working process, if the nut is loosened, the U-shaped bolt cannot be withdrawn outwards due to rotation because of the limit of the outer supporting strip, namely cannot be thrown out, and multiple protection is realized.
Preferably, the nut shield is welded to the inner support bar as a single piece.
Preferably, the N U-shaped bolts are positioned on the same vertical surface; n U type bolt parallel equidistance sets up.
In the embodiment, the outer supporting strip is a first plate-shaped structure which is vertically arranged; n groups of through holes are formed in the outer supporting strip and correspond to the N vertical U-shaped bolts in parallel.
Furthermore, the outer supporting strips can also be transversely arranged arc structures and fixed with a plurality of U-shaped bolts arranged on the same horizontal plane; through the outer supporting strips of a plurality of upper and lower parallel arrangements to a plurality of U type bolts of upper and lower parallel arrangements are fixed.
Preferably, the inner supporting bar is a second plate-shaped structure which is vertically arranged; the round hole is organized to interior support bar N, and N group's round hole corresponds the setting with N U type bolt to the cantilever end that supplies N U type bolt wears to establish. The circular holes enable the bolts to be fixed on the inner side of the inner support through the ring plate, and therefore the U-shaped bolts have enough length to ensure flexibility so as to adapt to thermal expansion deformation of the rotor winding along the axial direction when the unit operates.
Preferably, the U-bolts are made of non-magnetic material, and a plurality of U-bolts in the same vertical direction share the load borne by the rotor winding therebetween. The U-shaped bolt is fastened by adopting proper pretightening force, so that the insulation of the winding can be protected, and meanwhile, the fixing device can be fully contacted with the winding.
Preferably, the inner support is a full round end structure; the whole body is shaped like a Chinese character jing, and the whole round assembly welding structure is more stable. The same number of U-shaped bolts are arranged in different units of the inner support.
Preferably, the outer supporting strips are of a semi-cylindrical structure; the inner side of the coil is circular, and the coil and the upper layer winding can be appropriately filled with a conformal material so as to be in sufficient contact. The supporting strips can be made of high-strength nonmagnetic metal materials or insulating materials. The outer supporting strips are provided with parallel equidistant oval cavities for fixing the U-shaped bolts in the axial direction.
Preferably, N ∈ [4,6 ]; m is more than N; it should be noted that, the present embodiment does not limit the protection scope of the present invention, and as long as the structural strength and the spatial arrangement can be satisfied, the number of the U-shaped bolts can be flexibly arranged according to the actual requirement.
In the present exemplary embodiment, the U-bolts and the inner and outer struts support the centrifugal force and the radial thermal stress of the rotor winding head. Because a single bolt cannot bear the centrifugal force, 4-6U-shaped bolts can be arranged in the same vertical direction for fixing together, and 5U-shaped bolts are adopted in the vertical direction in the embodiment; the gaps between adjacent outer support struts facilitate the ventilation cooling of the rotor windings.
The device disclosed by the invention effectively solves the problems of fixed protection and ventilation and heat dissipation of the end part of the rotor winding of the variable-speed unit, provides conditions for long-term safe and stable operation of the unit, greatly reduces the fixed cost, and is easy to install and disassemble in field maintenance.
While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the invention. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A fixing device for the winding end part of a rotor of a variable-speed generator-motor is characterized by comprising M groups of clamping structures, wherein the M groups of clamping structures are distributed at equal intervals along the circumferential direction;
the clamping structure comprises an outer supporting strip, a radial connecting component, an inner supporting strip and an inner support, wherein the outer supporting strip is vertically arranged on the outer side of the end part of the upper-layer winding of the rotor; the radial connecting component comprises N U-shaped bolts, and the N U-shaped bolts are horizontally arranged along the radial direction;
the inner support bar is arranged on the inner side of the inner support;
the inner support is arranged in the rotor winding, the cantilever end of the U-shaped bolt sequentially penetrates through the outer support strip, a gap between the upper layer winding and the lower layer winding of the rotor, the inner support and the inner support strip, and the cantilever end of the U-shaped bolt is fixedly connected with the inner support strip.
2. The fixture for variable speed generator-motor rotor winding overhangs of claim 1 wherein the inner support is a grid-like frame structure;
the U-shaped bolts are arranged corresponding to the vertical spokes of the latticed frame structure.
3. The fixture for rotor winding overhangs of variable speed generator-motors of claim 1, characterized in that the two cantilevered ends of the U-bolt are screwed with the inner support bar by a connector to abut against the outer support bar;
and the two cantilever ends of the U-shaped bolt are provided with external thread sections.
4. The fixture for rotor winding overhangs of variable speed generator-motors of claim 3 wherein the snap-fit structure further comprises a nut boot that is vertically disposed over the connecting piece;
the nut protection cover is fixedly connected with the inner support strip.
5. The fixture for variable speed generator-motor rotor winding overhangs of claim 1 wherein N of the U-bolts are in the same vertical plane;
n U type bolt parallel equidistance sets up.
6. The fixture for variable speed generator-motor rotor winding overhangs of claim 1 wherein the outer support struts are vertically disposed first plate-like structures;
n groups of through holes are formed in the outer supporting strip and correspond to the N U-shaped bolts.
7. The fixture for variable speed generator-motor rotor winding ends according to claim 1, wherein the inner support bars are a second plate-like structure disposed vertically;
the inner supporting strip N sets of round holes, and N sets of the round holes are corresponding to the U-shaped bolts, so that the N cantilever ends of the U-shaped bolts penetrate through the round holes.
8. The fixture for rotor winding overhangs for variable speed generator-motors of claim 1, wherein the U-bolts are made of nonmagnetic material.
9. The fixture for variable speed generator motor rotor winding overhangs of claim 1 wherein the inner support is a full round end structure;
the outer supporting strip is of a semi-cylindrical structure.
10. The fixture for rotor winding overhangs for variable speed generator-motors according to claim 1, characterized in that N e [4,6 ];
M＞N。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157032.7A CN114567107A (en) | 2022-02-21 | 2022-02-21 | Fixing device for rotor winding end part of variable-speed generator motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157032.7A CN114567107A (en) | 2022-02-21 | 2022-02-21 | Fixing device for rotor winding end part of variable-speed generator motor |
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| Publication Number | Publication Date |
|---|---|
| CN114567107A true CN114567107A (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210157032.7A Pending CN114567107A (en) | 2022-02-21 | 2022-02-21 | Fixing device for rotor winding end part of variable-speed generator motor |
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| Country | Link |
|---|---|
| CN (1) | CN114567107A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5606212A (en) * | 1993-05-17 | 1997-02-25 | Kabushiki Kaisha Toshiba | Rotor of rotary electric-machine |
| CN101689783A (en) * | 2007-03-30 | 2010-03-31 | 阿尔斯通技术有限公司 | Rotor for an electric machine |
| JP2014236648A (en) * | 2013-06-05 | 2014-12-15 | 株式会社東芝 | Dynamo-electric machine and rotor of dynamo-electric machine |
| CN205141870U (en) * | 2015-10-26 | 2016-04-06 | 东方电气集团东方电机有限公司 | Strutting arrangement for motor |
| CN110332083A (en) * | 2019-07-09 | 2019-10-15 | 新天绿色能源股份有限公司 | A kind of wind driven generator yaw pitch variable bearings are disconnected to fall bolt collector |
| CN111864953A (en) * | 2020-07-28 | 2020-10-30 | 哈电发电设备国家工程研究中心有限公司 | Variable-speed pumped storage generator set rotor winding end fixing structure |
-
2022
- 2022-02-21 CN CN202210157032.7A patent/CN114567107A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5606212A (en) * | 1993-05-17 | 1997-02-25 | Kabushiki Kaisha Toshiba | Rotor of rotary electric-machine |
| CN101689783A (en) * | 2007-03-30 | 2010-03-31 | 阿尔斯通技术有限公司 | Rotor for an electric machine |
| JP2014236648A (en) * | 2013-06-05 | 2014-12-15 | 株式会社東芝 | Dynamo-electric machine and rotor of dynamo-electric machine |
| CN205141870U (en) * | 2015-10-26 | 2016-04-06 | 东方电气集团东方电机有限公司 | Strutting arrangement for motor |
| CN110332083A (en) * | 2019-07-09 | 2019-10-15 | 新天绿色能源股份有限公司 | A kind of wind driven generator yaw pitch variable bearings are disconnected to fall bolt collector |
| CN111864953A (en) * | 2020-07-28 | 2020-10-30 | 哈电发电设备国家工程研究中心有限公司 | Variable-speed pumped storage generator set rotor winding end fixing structure |
Non-Patent Citations (1)
| Title |
|---|
| 姜茜;刘国华;: "大型异步水轮发电机转子绕组端部固定方法", 东方电机, no. 03, 15 June 2012 (2012-06-15), pages 74 - 78 * |
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