CN110676963B - Variable-speed pumped storage generator motor with shaft-radial two-way regional forced flow-increasing rotor - Google Patents
Variable-speed pumped storage generator motor with shaft-radial two-way regional forced flow-increasing rotor Download PDFInfo
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- CN110676963B CN110676963B CN201910958451.9A CN201910958451A CN110676963B CN 110676963 B CN110676963 B CN 110676963B CN 201910958451 A CN201910958451 A CN 201910958451A CN 110676963 B CN110676963 B CN 110676963B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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Abstract
The invention discloses a variable-speed pumped storage generator motor with a shaft-radial two-way regional forced flow-increasing rotor, and relates to the field of motors. The invention aims to solve the problem that a variable-speed pumped storage generator motor is high in temperature. The radial flow increasing plate of the first level of the rotor and the radial flow increasing plate of the second level of the rotor are both installed on the rotor shaft and are fixed through a rotor inner side fixing plate and a rotor outer side fixing plate, a rotor radial ventilation ditch is reserved between rotor cores, a rotor third level radial flow increasing plate is installed between the rotor radial ventilation ditches, a rotor fourth level radial flow increasing fin and a rotor auxiliary enhanced fourth level radial flow increasing sheet are installed on the surface of each rotor core, rotor axial direction one-level small fans are sequentially installed on two sides of the rotor outer side fixing plate, rotor axial direction two-level medium fans and rotor axial direction three-level large fans are sequentially installed on two sides of the rotor outer side fixing plate, and the. The invention enhances the cooling effect of each component in the variable-speed pumped storage power generation motor and is convenient to realize.
Description
The technical field is as follows:
the invention relates to a variable-speed pumped storage generator motor with a shaft-radial two-way regional forced flow-increasing rotor, belonging to the field of motors.
Background art:
the conventional constant-speed pumped storage power generation motor has the problems of low efficiency of a water turbine, increased vibration and abrasion and the like in a pumped storage power station with a large water head change, and is not enough to meet the requirement of large-scale rapid power fluctuation of a power grid in recent years. The variable-speed pumped storage power generation motor has the advantages that the amplitude, the frequency and the phase of the rotor exciting current can be adjusted, so that the active power and the reactive power can be independently adjusted, the requirement that the pump turbine stably operates at different rotating speeds under different water heads is met, the operating water head and lift ratio range of the pump turbine is enlarged, and the optimal performance index is obtained. The variable-speed pumped storage generator motor has electrical performance obviously superior to that of the traditional constant-speed pumped storage generator motor, however, along with the increase of the capacity of the large-capacity variable-speed pumped storage generator motor, the temperature rise of the variable-speed pumped storage generator motor is obviously improved, and the reliability of the large-capacity variable-speed pumped storage generator motor is seriously threatened.
In order to reduce the temperature of the rotor core, the rotor winding, the stator core, the stator winding and the stator pressure finger in the full space region of the large-capacity variable-speed pumped storage generator motor, the novel variable-speed pumped storage generator motor rotor ventilation cooling system can be adopted, the flow and the flow velocity of cooling gas in the variable-speed pumped storage generator motor can be obviously increased, the surface heat dissipation coefficients of a rotor core, a rotor winding, a stator core, a stator winding and a stator pressure finger are increased, the utilization rate of the cooling gas in the variable-speed pumped storage generator motor is improved, the highest temperature of each component in the variable-speed pumped storage generator motor is effectively reduced, the temperature difference and the thermal stress in the axial direction of the variable-speed pumped storage generator motor are reduced, and the cooling effect on the stator winding and the rotor winding which generate heat seriously is good, so that the large-capacity variable-speed pumped storage generator motor can be ensured to run reliably and safely for a long time.
The invention content is as follows:
the invention aims to provide a variable-speed pumped storage generator motor with a shaft-radial two-way regional forced flow-increasing rotor, which solves the problem of overhigh temperature of a rotor iron core, a rotor winding, a stator iron core, a stator winding and a stator pressure finger caused by unreasonable ventilation design of a rotor region of a large-capacity variable-speed pumped storage generator motor, obviously increases the flow rate and the flow velocity of cooling gas, improves the utilization rate of the cooling gas in the variable-speed pumped storage generator motor, can effectively reduce the temperature of each component in the variable-speed pumped storage generator motor and the thermal stress in the axial direction through the design of the shaft-radial two-way regional forced flow-increasing rotor, and improves the long-term reliable running capability of the large-capacity variable-speed pumped storage generator motor.
The invention relates to a variable-speed pumped storage generating motor with a shaft-radial two-way regional forced flow-increasing rotor, which comprises a rotor first-stage radial flow-increasing plate, a rotor shaft, a rotor inner side fixing plate, a rotor second-stage radial flow-increasing plate, a rotor outer side fixing plate, a rotor iron core, a rotor radial ventilation ditch, a rotor third-stage radial flow-increasing plate, a rotor winding, a rotor fourth-stage radial flow-increasing fin, a rotor auxiliary enhanced fourth-stage radial flow-increasing sheet, a rotor axial fixing plate, a rotor axial first-stage small fan, a rotor axial second-stage medium-sized fan, a rotor axial third-stage large-sized fan, a rotor supporting plate, a stator iron core, a stator radial ventilation ditch, a stator winding, a stator positioning rib, a stator pressure finger, a stator pressure ring, a. The radial flow increasing plate of the first level of the rotor and the radial flow increasing plate of the second level of the rotor are both installed on the rotor shaft and are fixed through a rotor inner side fixing plate and a rotor outer side fixing plate, a rotor radial ventilation ditch is reserved between rotor cores, a rotor third level radial flow increasing plate is installed between the rotor radial ventilation ditches, a rotor fourth level radial flow increasing fin and a rotor auxiliary enhanced fourth level radial flow increasing sheet are installed on the surface of each rotor core, rotor axial direction one-level small fans are sequentially installed on two sides of the rotor outer side fixing plate, rotor axial direction two-level medium fans and rotor axial direction three-level large fans are sequentially installed on two sides of the rotor outer side fixing plate, and the.
The radial height of the first-stage radial flow increasing plate of the rotor is 1/5-1/2 of the radial height of the second-stage radial flow increasing plate of the rotor; the radial height of the third-stage radial flow increasing plate of the rotor is 1/7-1/5 of the radial height of the rotor core; the length of the radial flow increasing wing of the fourth stage of the rotor extending out of the surface of the rotor core is 2mm-3 mm; the fourth-stage radial flow increasing fins of the rotor are made of non-magnetic materials; the axial length of the rotor axial two-stage medium-sized fan is 1/10-1/8 of the axial length of the rotor outer side fixing plate; the axial length of the rotor axial first-stage miniature fan is 1/4-1/2 of the axial length of the rotor axial second-stage miniature fan.
Preferably, the number of the fourth-stage radial flow increasing fins of the rotor is increased from 1/3 to 1/2 in the circumferential direction, so that the flow velocity of cooling gas entering the radial ventilation channels of the stator can be increased, the capability of the cooling gas for taking away heat of the stator core and the stator winding is enhanced, and the temperature of the stator core and the stator winding is further reduced.
Preferably, the width of the rotor in the axial direction of the three-stage large fan is increased by 1/5-1/3, so that the flow velocity of cooling gas can be further increased, the heat of the stator winding is effectively taken away, and the temperature of the stator winding is further reduced.
Preferably, a rotor axial supplementary type small fan is additionally arranged on the rotor supporting plate, so that the total flow of cooling gas in the variable-speed pumped storage power generation motor is further increased, the utilization rate of the cooling gas is improved, and the temperature of a rotor winding is further reduced.
Preferably, the rotor pressing plate is internally provided with a radial ventilation channel inside the rotor pressing plate, and cooling gas in the radial ventilation channel inside the rotor pressing plate can effectively take away heat of the rotor pressing plate, so that the temperature of the rotor pressing plate is effectively reduced.
The invention has the advantages that: the temperatures of a rotor core, a rotor winding, a stator core and a stator winding of the large-capacity variable-speed pumped storage generator motor are higher, and the utilization rate of cooling gas in the large-capacity variable-speed pumped storage generator motor is lower. The invention forms a shaft-radial two-way regional forced flow-increasing rotor by installing a first-stage radial flow-increasing plate and a second-stage radial flow-increasing plate of the rotor on an original rotor shaft, installing a third-stage radial flow-increasing plate of the rotor between radial ventilation channels of the rotor, installing a fourth-stage radial flow-increasing fin and a rotor auxiliary enhanced fourth-stage radial flow-increasing sheet on the surface of a rotor core, and additionally sequentially installing a first-stage axial small fan, a second-stage axial medium fan and a third-stage axial large fan on two sides of a fixed plate outside the rotor. The flow and pressure of cooling gas can be increased step by utilizing the shaft-radial two-way regional forced flow-increasing rotor, the flow velocity of the cooling gas in the variable-speed pumped storage power generation motor is accelerated, the capability of the cooling gas for taking away the heat of the rotor core, the rotor winding, the stator core and the stator winding is improved, and the temperatures of the rotor core, the rotor winding, the stator core and the stator winding are obviously reduced. The variable-speed pumped storage generator motor with the shaft-radial two-way regional forced flow-increasing rotor can effectively improve the fluid flow in the generator motor and the utilization rate of cooling gas, obviously reduce the highest temperature of each component in the generator motor, reduce the temperature difference and thermal stress in the axial direction of the generator motor, save materials and enhance the long-term safe and reliable operation capability of the variable-speed pumped storage generator motor.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a sectional view of the rotor of the variable speed pumped-storage generator motor with a shaft-radial two-way zoned forced-flow rotor according to the present invention in the axial direction;
FIG. 2 is a circumferential cross-sectional view of a first stage radial flow increasing plate and a second stage radial flow increasing plate of the rotor according to the present invention;
FIG. 3 is a circumferential cross-sectional view of a third stage radial flow increasing plate of the rotor according to the present invention;
FIG. 4 is a circumferential cross-sectional view of a fourth radial flow-increasing fin of a rotor core and a rotor according to the present invention;
fig. 5 is a circumferential sectional view of a large fan having three stages of axial rotor shafts according to the present invention;
FIG. 6 is a schematic diagram of the flow of cooling gas in a variable speed pumped-storage generator motor with a shaft-radial split area forced-flow rotor according to the present invention;
fig. 7 is a sectional view of the rotor of the variable speed pumped-storage generator motor with a forced flow-increasing rotor in two axial and radial directions according to the fourth embodiment of the present invention;
fig. 8 is a sectional view of the rotor of the variable speed pumped-storage generator motor with a forced flow-increasing rotor in the axial-radial direction according to the fifth embodiment of the present invention.
In the figure: 1-rotor first-stage radial flow increasing plate, 2-rotor shaft, 3-rotor inner side fixing plate, 4-rotor second-stage radial flow increasing plate, 5-rotor outer side fixing plate, 6-rotor iron core, 7-rotor radial ventilating ditch, 8-rotor third-stage radial flow increasing plate, 9-rotor winding, 10-rotor fourth-stage radial flow increasing fin, 11-rotor auxiliary enhanced fourth-stage radial flow increasing sheet, 12-rotor axial fixing plate, 13-rotor axial first-stage small fan, 14-rotor axial second-stage medium fan, 15-rotor axial third-stage large fan, 16-rotor supporting plate, 17-stator iron core, 18-stator radial ventilating ditch, 19-stator winding, 20-stator positioning rib, 21-stator pressure finger, 3-rotor inner side fixing plate, 4-rotor second-stage radial flow increasing plate, 5-rotor, 22-stator clamping ring, 23-stator guide plate, 24-rotor pressing plate, 25-rotor axial supplement type small fan and 26-rotor pressing plate inner radial ventilation channel. The arrow in the figure shows the flow direction of cooling gas in the variable-speed pumped storage generator motor with the shaft-radial two-way zoning forced flow-increasing rotor.
The specific implementation mode is as follows:
in order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: the variable-speed pumped storage generator motor with a shaft-radial two-stage regionally forced flow-increasing rotor according to the present embodiment is described with reference to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, and comprises a first-stage radial flow-increasing plate 1 of the rotor, a rotor shaft 2, a rotor inner-side fixing plate 3, a second-stage radial flow-increasing plate 4 of the rotor, a rotor outer-side fixing plate 5, a rotor core 6, a rotor radial ventilation ditch 7, a third-stage radial flow-increasing plate 8 of the rotor, a rotor winding 9, a fourth-stage radial flow-increasing fin 10 of the rotor, a fourth-stage radial flow-increasing plate 11 of the auxiliary reinforcement type of the rotor, a rotor axial fixing plate 12, a first-stage small fan 13 of the rotor axial, a second-stage medium fan 14 of the rotor, a third-stage large fan 15 of the rotor axial, a rotor supporting plate 16, a, Stator pressure finger 21, stator clamping ring 22, stator baffle 23 and rotor clamp plate 24. The radial flow increasing plate 1 of the first level of the rotor and the radial flow increasing plate 4 of the second level of the rotor are both installed on a rotor shaft 2 and are fixed through a rotor inner side fixing plate 3 and a rotor outer side fixing plate 5, a rotor radial ventilation ditch 7 is reserved between rotor iron cores 6, a rotor third level radial flow increasing plate 8 is installed between the rotor radial ventilation ditches 7, a rotor fourth level radial flow increasing fin 10 and a rotor auxiliary enhanced fourth level radial flow increasing sheet 11 are installed at the surface of each rotor iron core 6, a rotor axial first level small fan 13, a rotor axial second level medium fan 14 and a rotor axial third level large fan 15 are sequentially installed on two sides of the rotor outer side fixing plate 5, and the rotor axial third level large fan 15 is installed on a rotor supporting plate 16.
The radial height of the rotor first-stage radial flow increasing plate 1 is 1/5-1/2 of the radial height of the rotor second-stage radial flow increasing plate 4, which is 1/4 in the embodiment; the radial height of the third-stage radial flow increasing plate 8 of the rotor is 1/7-1/5 of the radial height of the rotor core 6, which is 1/6 in the embodiment; the length of the fourth-stage radial flow increasing fin 10 of the rotor extending out of the surface of the rotor core 6 is 2mm-3mm, and the length is 3mm in the embodiment; the fourth-stage radial flow increasing fins 10 of the rotor are made of non-magnetic materials; the axial length of the rotor axial two-stage medium-sized fan 14 is 1/10-1/8 of the axial length of the rotor outer side fixing plate 5, which is 1/9 in the embodiment; the axial length of the rotor axial first-stage small fan 13 is 1/4-1/2 of the axial length of the rotor axial second-stage medium fan 14, and the axial length is 1/3 in the embodiment.
A rotor first-stage radial flow increasing plate 1 is arranged on a rotor shaft of the variable-speed pumped storage generator motor and is defined as a rotor first radial flow expansion area; a rotor second-stage radial flow increasing plate 4 is arranged on the rotor shaft and is defined as a rotor second radial flow expansion area; a third-stage radial flow increasing plate 8 of the rotor is arranged in the radial ventilation channel of the rotor and is defined as a third radial flow expansion area of the rotor; a fourth-stage radial flow increasing fin 10 and a fourth-stage radial flow increasing sheet 11 which are auxiliary rotor enhancement type are arranged on the surface of the rotor core 6 and are defined as a fourth radial flow expanding area of the rotor; and a rotor axial first-stage small fan 13, a rotor axial second-stage medium-sized fan 14 and a rotor axial third-stage large fan 15 are sequentially arranged on two sides of the rotor outer side fixing plate 5 and respectively defined as a rotor first axial enhanced cooling area, a rotor second axial enhanced cooling area and a rotor third axial enhanced cooling area. When the variable-speed energy storage power generation motor rotor rotates, under the action of the first-stage radial flow increasing plate 1 of the rotor, a part of cooling gas flows along the radial direction, the flow and the flow speed of the cooling gas are increased, after the cooling gas with higher flow speed reaches the second-stage flow increasing area of the rotor, under the action of the second-stage radial flow increasing plate 4 of the rotor, the flow and the pressure of the cooling gas are further increased, the flow speed of the cooling gas is obviously increased, and the cooling gas regularly reaches the third radial flow increasing area of the rotor; the flow of the cooling gas is further improved under the action of the third-stage radial flow increasing plate 8 of the rotor, the flow velocity and the pressure of the cooling gas are also obviously increased, the heat of the rotor core 6 and the rotor winding 9 is effectively taken away, the temperature of the rotor core 6 and the temperature of the rotor winding 9 are further reduced, the thermal stress of the rotor winding 9 in the axial direction is reduced, and the cooling gas flowing out of the outlet of the radial ventilation channel 7 of the rotor reaches the fourth radial flow expansion area of the rotor; under the action of the fourth-stage radial flow increasing fins 10 of the rotor, the flow and the flow velocity of the cooling gas are increased again, and after the cooling gas with higher flow velocity regularly enters the stator radial ventilation grooves 18, the surface heat dissipation coefficients of the stator core 17 and the stator windings 19 are obviously increased, the heat of the stator core 17 and the stator windings 19 is effectively taken away, and the temperature of the stator core 17 and the stator windings 19 is obviously reduced. In addition, under the action of the first-stage small fan 13 in the axial direction of the rotor and the second-stage medium fan 14 in the axial direction of the rotor, the other part of the cooling gas reaches the end winding of the rotor along the radial direction, the surface heat dissipation coefficient of the end winding of the rotor is increased, the temperature of the end winding of the rotor is effectively reduced, the flow velocity of the cooling gas is increased again under the action of the fourth-stage radial flow increasing piece 11 which is auxiliary and enhanced for the rotor after the cooling gas passes through the end winding of the rotor, the heat of the end winding of the stator and the pressure fingers 21 is effectively taken away after the part of the cooling gas reaches the end winding of the stator and the pressure fingers 21, and the temperature of the end winding of the stator. The last part of cooling gas directly reaches the stator end winding under the action of the rotor axial three-stage large fan 15, so that the surface heat dissipation coefficient of the stator end winding is obviously increased, the heat of the stator end winding is effectively taken away, and the temperature of the stator end winding which generates heat seriously is obviously reduced. The axial-radial two-way multi-section step-by-step flow increasing rotor can effectively increase the flow and the flow velocity of cooling gas in the variable-speed pumped storage power generation motor, remarkably improve the utilization rate of the cooling gas and enhance the long-term safe and reliable operation capability of the variable-speed pumped storage power generation motor.
The second embodiment is as follows: the difference between the first embodiment and the second embodiment is that the number of the fourth-stage radial flow-increasing fins 10 of the rotor is increased by 1/3-1/2 in the circumferential direction, so that the flow velocity of cooling gas entering the stator radial ventilation groove 18 can be increased, the capability of the cooling gas for taking away heat of the stator core 17 and the stator winding 19 is enhanced, and the temperature of the stator core 17 and the stator winding 19 is further reduced. Other components and connection relationships are the same as those in the first embodiment.
The third concrete implementation mode: the difference between the first embodiment and the second embodiment is that the width of the rotor axial three-stage large fan 15 in the axial direction is increased by 1/5-1/3, so that the flow velocity of the cooling gas can be further increased, the heat of the stator winding 19 is effectively taken away, and the temperature of the stator winding 19 is further reduced. Other components and connection relationships are the same as those in the first embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 7, and the difference between the present embodiment and the first embodiment is that a small fan 25 of rotor axial supplement type is added to the rotor support plate 16, so that the total flow rate of cooling gas in the variable speed pumped storage generator motor is further increased, the utilization rate of the cooling gas is improved, and the temperature of the rotor winding 9 is further reduced. Other components and connection relationships are the same as those in the first embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 8, and the difference between the present embodiment and the first embodiment is that a rotor pressing plate inner radial air duct 26 is formed inside the rotor pressing plate 24, and the cooling gas in the rotor pressing plate inner radial air duct 26 can effectively take away the heat of the rotor pressing plate 24, thereby effectively reducing the temperature of the rotor pressing plate 24. Other components and connection relationships are the same as those in the first embodiment.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The variable-speed pumped storage generating motor with the shaft-radial two-way regional forced flow-increasing rotor is characterized in that: the novel radial air flow increasing device comprises a first-stage radial air flow increasing plate (1) of a rotor, a rotor shaft (2), a rotor inner side fixing plate (3), a second-stage radial air flow increasing plate (4) of the rotor, a rotor outer side fixing plate (5), a rotor iron core (6), a radial ventilation ditch (7) of the rotor, a third-stage radial air flow increasing plate (8) of the rotor, a rotor winding (9), a fourth-stage radial air flow increasing fin (10) of the rotor, a rotor auxiliary enhancement type fourth-stage radial air flow increasing sheet (11), a rotor axial fixing plate (12), a first-stage small fan (13) of the rotor axial direction, a second-stage medium-sized fan (14) of the rotor axial direction, a third-stage large-sized fan (15) of the rotor axial direction, a rotor supporting plate (16), a stator iron core (17), a radial ventilation ditch (18) of the stator, the radial flow increasing plate comprises a rotor first-stage radial flow increasing plate (1) and a rotor second-stage radial flow increasing plate (4), which are both arranged on a rotor shaft (2), and are fixed through a rotor inner side fixing plate (3) and a rotor outer side fixing plate (5), rotor radial ventilation ditches (7) are reserved between rotor cores (6), a rotor third-stage radial flow increasing plate (8) is arranged between the rotor radial ventilation ditches (7), rotor fourth-stage radial flow increasing fins (10) and rotor auxiliary enhanced fourth-stage radial flow increasing fins (11) are arranged on the surface of each rotor core (6), rotor axial first-stage small fans (13), rotor axial second-stage medium fans (14) and rotor axial third-stage large fans (15) are sequentially arranged on two sides of the rotor outer side fixing plate (5), and the rotor axial third-stage large fans (15) are arranged on a rotor supporting plate (16).
2. The variable speed pumped-storage generator-motor with a shaft-radial split-zone forced-flow rotor of claim 1, wherein: the radial height of the first-stage radial flow increasing plate (1) of the rotor is 1/5-1/2 of the radial height of the second-stage radial flow increasing plate (4) of the rotor; the radial height of the third-stage radial flow increasing plate (8) of the rotor is 1/7-1/5 of the radial height of the rotor core (6); the length of the fourth-stage radial flow increasing fin (10) of the rotor extending out of the surface of the rotor core (6) is 2mm-3 mm; the fourth-stage radial flow increasing fins (10) of the rotor are made of non-magnetic materials; the axial length of the rotor axial two-stage medium-sized fan (14) is 1/10-1/8 of the axial length of the rotor outer side fixing plate (5); the axial length of the rotor axial first-stage small fan (13) is 1/4-1/2 of the axial length of the rotor axial second-stage medium fan (14).
3. The variable speed pumped-storage generator-motor with a shaft-radial split-zone forced-flow rotor of claim 1, wherein: the number of the fourth-stage radial flow increasing fins (10) of the rotor is increased 1/3-1/2 in the circumferential direction.
4. The variable speed pumped-storage generator-motor with a shaft-radial split-zone forced-flow rotor of claim 1, wherein: the width of the rotor in the axial direction of the three-stage large fan (15) is increased by 1/5-1/3.
5. The variable speed pumped-storage generator-motor with a shaft-radial split-zone forced-flow rotor of claim 1, wherein: and a rotor axial supplementary type small fan (25) is added on the rotor supporting plate (16).
6. The variable speed pumped-storage generator-motor with a shaft-radial split-zone forced-flow rotor of claim 1, wherein: and a radial ventilation channel (26) inside the rotor pressing plate is formed in the rotor pressing plate (24).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910958451.9A CN110676963B (en) | 2019-10-10 | 2019-10-10 | Variable-speed pumped storage generator motor with shaft-radial two-way regional forced flow-increasing rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910958451.9A CN110676963B (en) | 2019-10-10 | 2019-10-10 | Variable-speed pumped storage generator motor with shaft-radial two-way regional forced flow-increasing rotor |
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| CN110676963B true CN110676963B (en) | 2021-02-12 |
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| JPH08130855A (en) * | 1994-11-01 | 1996-05-21 | Fuji Electric Co Ltd | Cooling equipment for pipe ventilation rotating electric machine |
| CN102570670B (en) * | 2012-01-17 | 2014-06-04 | 东元总合科技（杭州）有限公司 | Rotor with internal spacers and motor employing rotor |
| CN102611229B (en) * | 2012-03-31 | 2013-12-11 | 永济新时速电机电器有限责任公司 | Air-to-air cooling double-fed asynchronous wind driven generator |
| CN203674892U (en) * | 2014-01-24 | 2014-06-25 | 浙江大学 | Air cooling structure of permanent magnet synchronous traction motor |
| CN204721127U (en) * | 2015-06-09 | 2015-10-21 | 哈尔滨理工大学 | Rotor surface fan blade type non salient pole generator ventilation cooling structure |
| CN207677576U (en) * | 2018-01-05 | 2018-07-31 | 国家电网公司 | Large-scale pumped storage power unit generation motor ventilation cooling structure |
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