CN117748833A - Variable speed pumped storage motor with rotor concentrated winding and main air dividing path staggered ventilation system - Google Patents
Variable speed pumped storage motor with rotor concentrated winding and main air dividing path staggered ventilation system Download PDFInfo
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- CN117748833A CN117748833A CN202311157875.8A CN202311157875A CN117748833A CN 117748833 A CN117748833 A CN 117748833A CN 202311157875 A CN202311157875 A CN 202311157875A CN 117748833 A CN117748833 A CN 117748833A
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- 238000004804 winding Methods 0.000 title claims abstract description 120
- 238000003860 storage Methods 0.000 title claims abstract description 56
- 238000009423 ventilation Methods 0.000 title claims abstract description 28
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 19
- 239000012141 concentrate Substances 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 230000020169 heat generation Effects 0.000 abstract description 3
- 239000000112 cooling gas Substances 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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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Abstract
The invention discloses a variable-speed pumped storage motor with a rotor concentrated winding and a main air distribution path staggered ventilation system, and relates to the field of motors. The invention aims to solve the problem that the end part of the existing variable-speed pumped storage motor is serious in heat generation. The rotor concentrated winding is arranged on a rotor core, rotor core branch air ducts are formed in the rotor core, rotor main branch air ducts are reserved between the rotor cores, the rotor core branch air ducts are communicated with the rotor main branch air ducts, pressurizing air guide steel is arranged in each rotor main branch air duct, rotor blocking air plugs are arranged at tooth top parts of every two rotor main branch air ducts, a double-layer centrifugal fan is arranged on the end face of the rotor core, the stator distributed winding is arranged on a stator core, stator core branch air ducts are formed in the stator core, stator main branch air ducts are reserved between the stator cores, and the stator core branch air ducts are communicated with the stator main branch air ducts. The invention enhances the cooling effect of the variable-speed pumped storage motor, has simple structure and is convenient to realize.
Description
Technical Field
The invention relates to a variable-speed pumped storage motor with a rotor concentrated winding and a main air distribution path staggered ventilation system, belonging to the field of motors.
Background
The constant-speed pumped storage motor has the problems of low efficiency, large vibration abrasion, increased cavitation and the like of a water turbine of a unit due to constant rotating speed, and the traditional constant-speed pumped storage motor is difficult to further bear the weight of frequency modulation, phase modulation, peak regulation, accident standby and the like. The variable-speed pumped storage unit is adopted to obtain better running performance by widening the running water head range of the water pump turbine and changing the rotating speed of the rotor. The rotor current phase of the variable-speed pumped storage motor is adjusted, so that the reactive power of the variable-speed pumped storage motor can be changed, and the static stability of a power system is improved. Although the variable-speed pumped storage motor has more advantages, as the rotor area adopts the rotor distributed windings, the extension length of the rotor end windings is longer, and the rotor end windings can be subjected to larger centrifugal force when rotating, so that the rotor end windings are more difficult to mechanically fix. In addition, the heat generation of the rotor end winding is serious, and the cooling of the rotor end area is always the key point and the difficulty of the design of the variable-speed pumped storage motor.
In order to effectively solve the problem that the distributed winding end of the rotor of the variable speed pumped storage motor heats seriously, part of components in the rotor end area can be omitted, and the cooling effect of the stator end winding, the stator iron core and the rotor iron core is improved, the variable speed pumped storage motor with a rotor concentrated winding and a main air-separating path staggered ventilation system is innovatively provided, the extension length of the rotor end winding can be obviously shortened, the cooling effect of the rotor end winding and the stator end winding can be effectively improved through a double-layer centrifugal fan on the two side end surfaces of the rotor iron core, and the temperature of the rotor end winding and the stator end winding is reduced. The concentrated rotor winding can reduce the centrifugal force of the rotor end winding, can directly omit a rotor retaining ring or a U-shaped rotor screw rod, and saves the processing and manufacturing cost. The main air-dividing channel staggered ventilation system in the rotor area and the stator area can effectively carry away heat of the stator iron core, the stator winding, the rotor iron core and the rotor winding, reduce temperature difference and thermal stress of each component in the axial direction, and remarkably enhance cooling capacity of the variable-speed pumped storage motor ventilation system.
Disclosure of Invention
The invention aims to provide a variable-speed pumped storage motor with a rotor concentrated winding and a main air-splitting passage staggered ventilation system, so as to solve the problems of high centrifugal force caused by longer extension length of a rotor distributed winding of the variable-speed pumped storage motor, high cost caused by more protection of rotor end winding components and high temperature of a rotor end winding, effectively reduce the centrifugal force of the rotor end winding, increase the flow of cooling gas, reduce the temperature of the rotor end winding, improve the capacity of taking away heat of a stator rotor core and the stator rotor winding by the cooling gas, reduce the temperature of the stator rotor core and the stator winding, save the processing and manufacturing cost of the variable-speed pumped storage motor, and enhance the safe and stable operation capacity of the variable-speed pumped storage motor.
The invention relates to a variable-speed pumped storage motor with a rotor concentrated winding and a main air distribution channel staggered ventilation system, which comprises a rotor core, a rotor main branch air duct, a rotor core branch air duct, a rotor concentrated winding, a rotor blocking air plug, a rotor pressing plate, a stator distributed winding, a stator core, a stator main branch air duct, a stator core branch air duct, a stator pressing instruction, a stator pressing ring, a cooler, a rotor pressing plate, a rotor air deflector, a rotating shaft, a double-layer centrifugal fan, a supercharging air guide steel, a single-layer centrifugal fan, a 'lower narrow upper wide' centrifugal fan and a rotor bracket. The rotor concentrated winding is arranged on a rotor core, rotor core branch air ducts are formed in the rotor core, rotor main branch air ducts are reserved between the rotor cores, the rotor core branch air ducts are communicated with the rotor main branch air ducts, pressurizing air guide steel is arranged in each rotor main branch air duct, rotor blocking air plugs are arranged at tooth top parts of every two rotor main branch air ducts, a double-layer centrifugal fan is arranged on the end face of the rotor core, the stator distributed winding is arranged on a stator core, stator core branch air ducts are formed in the stator core, stator main branch air ducts are reserved between the stator cores, and the stator core branch air ducts are communicated with the stator main branch air ducts.
The width of the main branch air duct of the rotor is 3mm-8mm; the diameter of the rotor core branch channel air duct is 6mm-12mm; the included angle a between the main branch air duct of the rotor and the branch air duct of the rotor core is 20-70 degrees; the width of the main branch air duct of the stator is 3mm-8mm; the diameter of the stator core branch channel air duct is 6mm-12mm; the axial height of the double-layer centrifugal fan is 30mm-80mm; the number of blades of the double-layer centrifugal fan is 80-160; the thickness of the rotor pressing plate is 30mm-50mm.
Preferably, the double-layer centrifugal fan is changed into a single-layer centrifugal fan, so that the processing and manufacturing cost is reduced, and the temperatures of the rotor end winding and the stator end winding can be effectively reduced.
Preferably, the width of the main branch duct of the rotor is gradually narrowed along the gas flow direction, so that the cooling gas speed is gradually increased along the gas flow direction, the utilization rate of the cooling gas is improved, the cooling effect of the rotor core and the rotor concentrated winding is enhanced, and the temperatures of the rotor core and the rotor concentrated winding are further reduced.
Preferably, the double-layer centrifugal fan is changed into a 'lower narrow upper wide' centrifugal fan, so that the flow rate of cooling gas flowing out of the 'lower narrow upper wide' centrifugal fan is increased, and the temperatures of the stator end winding and the rotor end winding are further reduced.
The invention has the advantages that: the extension length of the end part of the rotor distributed winding of the traditional large-sized variable-speed pumped storage generator motor is longer, the end part of the rotor distributed winding is subjected to larger centrifugal force under the condition that the rotor rotates at a high speed, the rotor sheath or the U-shaped rotor screw rod is needed to fix the end part of the rotor distributed winding, the rotor distributed winding is difficult to dissipate heat due to the adoption of the sheath, the end part of the rotor distributed winding heats seriously, the processing technology and the manufacturing cost of the end part of the rotor distributed winding are higher due to the adoption of the U-shaped screw rod, and the risk that the U-shaped rotor screw rod falls off under the rotating action exists. The invention innovatively adopts the rotor concentrated winding to replace the traditional rotor distributed winding, and as the axial extension length of the rotor concentrated winding end is shorter, the rotor sheath or the U-shaped rotor screw rod and other components are directly canceled, and the end of the rotor concentrated winding and the stator distributed winding can be directly cooled by the newly added double-layer centrifugal fans on the two sides of the end face of the rotor core, thereby ensuring the electromagnetic performance and simultaneously effectively reducing the processing and manufacturing cost and the temperature of the rotor winding end. The rotor core, the rotor winding, the stator core and the stator winding can be effectively carried away through the rotor main branch air duct, the rotor core branch air duct, the stator main branch air duct and the stator core branch air duct, so that the temperatures of the rotor core, the rotor winding, the stator core and the stator winding are further reduced. The cooling gas in the variable-speed pumped storage generator motor is distributed more uniformly in the axial direction through the rotor air blocking plug, so that the temperature difference and the thermal stress in the axial direction of the concentrated winding of the rotor and the distributed winding of the stator are reduced, and the temperature of the rotor core is further reduced. The variable speed pumped storage motor with the rotor concentrated winding and the main air distribution channel staggered ventilation system can directly remove rotor guard rings or U-shaped rotor screw members, the temperature of the rotor end winding can be obviously reduced by utilizing the double-layer centrifugal fan at the rotor core end, the heat of each member in the variable speed pumped storage motor can be effectively carried away by the main air distribution channel staggered ventilation system, the temperature of each member is obviously reduced, the temperature of the variable speed pumped storage motor is ensured to be uniformly distributed in the axial direction, the temperature difference and the thermal stress in the axial direction of the variable speed pumped storage motor are reduced, the utilization rate of cooling gas is improved, and the long-term safe and stable operation capacity of the large variable speed pumped storage motor is enhanced.
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 fluid flow diagram of a variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system according to the present invention;
FIG. 2 is an enlarged partial view of a rotor area of a variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system in accordance with the present invention;
FIG. 3 is an enlarged partial view of the end of a rotor area of a variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system in accordance with the present invention;
FIG. 4 is an enlarged partial view of a radial cross section of the stator core and rotor core area of a variable speed pumped storage motor having a rotor concentrated winding and main split wind path staggered ventilation system in accordance with the present invention;
FIG. 5 is a fluid flow diagram of a variable speed pumped storage motor with a rotor concentrated winding and main split wind path staggered ventilation system according to a second embodiment of the present invention;
FIG. 6 is a fluid flow diagram of a variable speed pumped storage motor with a rotor concentrated winding and main split wind path staggered ventilation system according to a third embodiment of the present invention;
fig. 7 is a fluid flow diagram of a variable speed pumped storage motor with a rotor concentrated winding and main split wind path staggered ventilation system according to a fourth embodiment of the invention.
In the figure: 1-rotor core, 2-rotor main branch duct, 3-rotor core branch duct, 4-rotor concentrated winding, 5-rotor choke plug, 6-rotor pressing plate, 7-stator distributed winding, 8-stator core, 9-stator main branch duct, 10-stator core branch duct, 11-stator pressing finger, 12-stator pressing ring, 13-cooler, 14-rotor pressing plate, 15-rotor wind deflector, 16-rotating shaft, 17-double-layer centrifugal fan, 18-boosting wind guiding steel, 19-single-layer centrifugal fan, 20- "lower narrow upper wide" centrifugal fan and 21-rotor bracket. The arrows in the figure show the flow direction of cooling gas in a variable speed pumped storage motor with concentrated windings of the rotor and a main split wind path staggered ventilation system.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The first embodiment is as follows: referring to fig. 1, 2, 3 and 4, a variable speed pumped storage motor with a rotor concentrated winding and a main split wind path staggered ventilation system according to the present embodiment is described, and the variable speed pumped storage motor comprises a rotor core 1, a rotor main split wind path 2, a rotor core branch wind path 3, a rotor concentrated winding 4, a rotor blocking 5, a rotor pressing plate 6, a stator distributed winding 7, a stator core 8, a stator main split wind path 9, a stator core branch wind path 10, a stator pressing finger 11, a stator pressing ring 12, a cooler 13, a rotor pressing plate 14, a rotor wind deflector 15, a rotating shaft 16, a double-layer centrifugal fan 17, a boosting wind guiding steel 18, a single-layer centrifugal fan 19, a 'lower narrow upper wide' centrifugal fan 20 and a rotor bracket 21. The rotor concentrated winding 4 is arranged on the rotor core 1, the rotor core 1 is provided with rotor core branch air ducts 3, rotor main branch air ducts 2 are reserved between the rotor cores 1, the rotor core branch air ducts 3 are communicated with the rotor main branch air ducts 2, pressurizing air guide steel 18 is arranged in the rotor main branch air ducts 2, rotor blocking plugs 5 are arranged at tooth top parts of one rotor main branch air duct 2 at intervals, double-layer centrifugal fans 17 are arranged on end faces of the rotor cores 1, stator distributed windings 7 are arranged on stator cores 8, stator core branch air ducts 10 are arranged on the stator cores 8, stator main branch air ducts 9 are reserved between the stator cores 8, and the stator core branch air ducts 10 are communicated with the stator main branch air ducts 9.
The width of the main branch air duct 2 of the rotor is 3mm-8mm, and the embodiment is 6mm; the diameter of the rotor core branch channel air duct 3 is 6mm-12mm, and the diameter is 8mm in the embodiment; the included angle a between the rotor main branch air duct 2 and the rotor core branch air duct 3 is 20-70 degrees, and the included angle a is 60 degrees in the embodiment; the width of the main branch air duct 9 of the stator is 3mm-8mm, and the embodiment is 6mm; the diameter of the stator core branch channel air duct 10 is 6mm-12mm, and the diameter is 8mm in the embodiment; the axial height of the double-layer centrifugal fan 17 is 30mm-80mm, and the axial height is 70mm in the embodiment; the number of blades of the double-layer centrifugal fan 17 is 80-160, and 110 blades are adopted in the embodiment; the thickness of the rotor platen 14 is 30mm to 50mm, and 40mm is taken in this embodiment.
The rotor distributed winding of the original variable-speed pumped storage motor is changed into a rotor concentrated winding 4, a rotor core branch channel air duct 3 is newly formed in the original solid rotor core section, the original full-open rotor radial air duct is changed into a blocking rotor main branch air duct and an open rotor main branch air duct which are alternately distributed along the axial direction, namely, the rotor concentrated winding is realized by arranging rotor blocking air plugs 5 at the tooth top of one rotor main branch air duct 2 at intervals, a stator core branch channel air duct 10 is formed in the original solid stator core section, and a double-layer centrifugal fan 17 is newly added on an original solid rotor pressing plate. The axial extension length of the end part of the original rotor distribution winding is longer, the end part of the rotor distribution winding is subjected to larger centrifugal force after the rotor of the large-sized variable-speed pumped storage motor rotates, the rotor sheath or the U-shaped rotor screw rod is generally adopted to fix the end part of the rotor distribution winding, however, the rotor sheath is adopted to cause the difficulty in heat dissipation of the rotor distribution winding, the end part of the rotor distribution winding generates heat seriously, the U-shaped rotor screw rod is adopted to cause the processing technology and the manufacturing cost of the end part of the rotor distribution winding to be higher, and the risk that the U-shaped rotor screw rod falls off under the rotation effect exists. The invention innovatively adopts the rotor concentrated winding, the extension length of the end part of the rotor concentrated winding is shorter, the rotor guard ring or the U-shaped rotor screw of the traditional large-scale variable-speed pumped storage motor can be thoroughly canceled while the electrical performance is ensured, the processing and manufacturing cost is saved, the copper consumption of the rotor winding is reduced, and the reliability of the large-scale variable-speed pumped storage motor is improved. When the main air-dividing-path staggered speed-changing pumped storage motor with the rotor concentrated windings operates, under the action of the rotor air deflector 15, cooling air enters the rotor main branch air duct 2 along the radial direction, the flow and pressure of the cooling air are further increased under the action of the pressurizing air guide steel 18 in the rotor main branch air duct 2, the cooling air firstly flows along the radial direction in the rotor main branch air duct 2 with the rotor blocking plugs 5 and then enters the rotor core branch air duct 3, the cooling air enters the adjacent rotor main branch air duct 2 through the rotor core branch air duct 3, the cooling air in the rotor core branch air duct 3 can effectively carry away the heat of the rotor core 1, the temperature of the rotor core 1 is effectively reduced, and meanwhile, the flow of the cooling air in the adjacent two rotor main branch air ducts 2 is enhanced. The cooling gas flows along the radial direction in the rotor main branch air duct 2 without the rotor air blocking plug 5, and continues to flow along the radial direction after being converged with the cooling gas flowing in the adjacent rotor core branch air duct 3, so that the heat of the rotor concentrated winding 4 is effectively taken away, the temperature difference and the thermal stress in the axial direction of the rotor concentrated winding 4 are further reduced, and the temperature of the linear section area of the rotor concentrated winding 4 is effectively reduced. The cooling gas flowing out of the rotor main branch air duct 2 without the rotor blocking air plug 5 enters the stator main branch air duct 10 under the action of the rotation of the rotor, directly cools the stator distribution winding 7 and the stator iron core 8, effectively reduces the temperature of the stator distribution winding 7 and the stator iron core 8, flows in the stator main branch air duct 10 along the radial direction, flows in one path to cool the tooth part and the yoke part of the stator iron core 8 along the radial direction and then directly flows out of the back of the stator iron core, and flows out of the stator iron core branch air duct 10 into the adjacent stator main branch air duct 10, increases the contact area of the cooling gas and the stator iron core 8, effectively takes away the heat of the stator iron core 8, and further reduces the temperature of the stator iron core 8. When the rotor of the variable-speed pumped storage motor rotates, the double-layer centrifugal fans 17 on two sides of the rotor end part drive cooling gas to flow along the radial direction, so that the end part of the rotor concentrated winding 4 can be effectively cooled, the flow speed of the cooling gas around the end part of the rotor concentrated winding 4 is increased, the surface heat dissipation coefficient of the end part of the rotor concentrated winding 4 is increased, the temperature of the end part of the rotor concentrated winding 4 is effectively reduced, the upper layer fan and the lower layer fan act in the double-layer centrifugal fan 17, and the cooling gas flowing out of the double-layer centrifugal fan 17 can also directly reduce the temperature of the end part of the stator distributed winding 7 with serious heat generation and effectively carry away the heat of the end part of the stator distributed winding 7. The air in the end area and the linear section area of the cooling variable speed pumped storage motor directly enters the cooler 13, and the cooling air with lower temperature flows out from the outlet of the cooler 13 and then enters the rotor wind deflector 15 and the double-layer centrifugal fan 17 from the two sides of the variable speed pumped storage motor so as to complete the whole circulation, thus forming the main air distribution channel staggered ventilation cooling system with the concentrated rotor windings. The variable-speed pumped storage motor with the rotor concentrated winding and the main air distribution channel staggered ventilation system directly adopts the rotor concentrated winding 4 to replace the traditional rotor distributed winding, a rotor retaining ring or a U-shaped rotor screw component is directly eliminated, the processing and manufacturing cost of the variable-speed pumped storage motor is obviously reduced, and the heat in the variable-speed pumped storage motor can be effectively taken away through the rotor main air distribution channel 2, the rotor core branch air distribution channel 3, the stator main air distribution channel 9, the stator core branch air distribution channel 10 and the double-layer centrifugal fan 17, the temperature of each component in the variable-speed pumped storage motor is reduced, and the cooling capacity of the variable-speed pumped storage motor ventilation system is enhanced.
The second embodiment is as follows: the present embodiment is different from the first embodiment in that the double-layer centrifugal fan 17 is changed to the single-layer centrifugal fan 19, and the manufacturing cost is reduced, and the temperatures of the rotor end winding and the stator end winding can be effectively reduced, as described with reference to fig. 5. Other components and connection relationships are the same as those of the first embodiment.
And a third specific embodiment: the present embodiment is different from the first embodiment in that the width of the rotor main branch duct 2 is gradually narrowed along the gas flow direction, so that the cooling gas velocity is gradually increased along the gas flow direction, the utilization rate of the cooling gas is improved, the cooling effect of the rotor core 1 and the rotor concentrated winding 4 is enhanced, and the temperatures of the rotor core 1 and the rotor concentrated winding 4 are further reduced, as described with reference to fig. 6. Other components and connection relationships are the same as those of the first embodiment.
The specific embodiment IV is as follows: the present embodiment is different from the first embodiment in that the double-layered centrifugal fan 17 is changed to the "lower narrow upper wide" centrifugal fan 20 such that the flow rate of the cooling gas flowing out of the "lower narrow upper wide" centrifugal fan 20 is increased, and the temperatures of the stator end windings and the rotor end windings are further lowered, as described with reference to fig. 7. Other components and connection relationships are the same as those of the first embodiment.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Variable speed pumped storage motor with rotor concentrated winding and main wind path staggered ventilation system, characterized in that: the rotor core comprises a rotor core (1), a rotor main branch air duct (2), a rotor core branch air duct (3), a rotor concentrated winding (4), a rotor blocking plug (5), a rotor pressing plate (6), a stator distribution winding (7), a stator core (8), a stator main branch air duct (9), a stator core branch air duct (10), a stator pressing finger (11), a stator pressing ring (12), a cooler (13), a rotor pressing plate (14), a rotor air deflector (15), a rotating shaft (16), a double-layer centrifugal fan (17), a supercharging air guide steel (18), a single-layer centrifugal fan (19), a 'lower narrow upper wide' centrifugal fan (20) and a rotor bracket (21), wherein the rotor concentrated winding (4) is arranged on the rotor core (1), the rotor core branch air duct (3) is arranged on the rotor core (1), the rotor core main branch air duct (2) is reserved between the rotor core branch air duct (3) and the rotor main branch air duct (2), the rotor main branch air duct (2) is internally provided with the rotor guide steel (18), each rotor main branch air duct (2) is provided with the double-layer air duct centrifugal fan (17), the stator distributed winding (7) is arranged on a stator core (8), a stator core branch path air duct (10) is formed in the stator core (8), a stator main branch path air duct (9) is reserved between the stator cores (8), and the stator core branch path air duct (10) is communicated with the stator main branch path air duct (9).
2. The variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system of claim 1, wherein: the width of the main branch air duct (2) of the rotor is 3mm-8mm; the diameter of the rotor core branch channel air duct (3) is 6mm-12mm; the included angle a between the main rotor branch air duct (2) and the branch rotor core air duct (3) is 20-70 degrees; the width of the main branch air duct (9) of the stator is 3mm-8mm; the diameter of the stator core branch channel air duct (10) is 6mm-12mm; the axial height of the double-layer centrifugal fan (17) is 30mm-80mm; the number of blades of the double-layer centrifugal fan (17) is 80-160; the thickness of the rotor pressing plate (14) is 30mm-50mm.
3. The variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system of claim 1, wherein: the double-layer centrifugal fan (17) is changed into a single-layer centrifugal fan (19).
4. The variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system of claim 1, wherein: the width of the main branch duct (2) of the rotor gradually narrows along the gas flow direction.
5. The variable speed pumped storage motor having a rotor concentrate winding and a main split wind path staggered ventilation system of claim 1, wherein: the double-layer centrifugal fan (17) is changed into a 'lower narrow upper wide' type centrifugal fan (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311157875.8A CN117748833A (en) | 2023-09-07 | 2023-09-07 | Variable speed pumped storage motor with rotor concentrated winding and main air dividing path staggered ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311157875.8A CN117748833A (en) | 2023-09-07 | 2023-09-07 | Variable speed pumped storage motor with rotor concentrated winding and main air dividing path staggered ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117748833A true CN117748833A (en) | 2024-03-22 |
Family
ID=90278180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311157875.8A Pending CN117748833A (en) | 2023-09-07 | 2023-09-07 | Variable speed pumped storage motor with rotor concentrated winding and main air dividing path staggered ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117748833A (en) |
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2023
- 2023-09-07 CN CN202311157875.8A patent/CN117748833A/en active Pending
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