WO2021037192A1 - 一种具有降低大直径电机线圈和铁心周向温差的装置 - Google Patents

一种具有降低大直径电机线圈和铁心周向温差的装置 Download PDF

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Publication number
WO2021037192A1
WO2021037192A1 PCT/CN2020/112043 CN2020112043W WO2021037192A1 WO 2021037192 A1 WO2021037192 A1 WO 2021037192A1 CN 2020112043 W CN2020112043 W CN 2020112043W WO 2021037192 A1 WO2021037192 A1 WO 2021037192A1
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Prior art keywords
plate
air inlet
circumferential ring
circumferential
ring plate
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PCT/CN2020/112043
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English (en)
French (fr)
Inventor
王超
周光厚
蒋小平
廖毅刚
王峰军
杨燕
Original Assignee
东方电气集团东方电机有限公司
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Application filed by 东方电气集团东方电机有限公司 filed Critical 东方电气集团东方电机有限公司
Priority to EP20859584.3A priority Critical patent/EP4007132B1/en
Publication of WO2021037192A1 publication Critical patent/WO2021037192A1/zh

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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
    • 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
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • 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
    • 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
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Definitions

  • the invention relates to the technical field of wind power generators, and in particular to a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core.
  • the current limit of motor temperature is mainly for the hottest temperature. Therefore, the phenomenon of circumferential temperature unevenness will seriously affect the maximum output of the motor. On the other hand, the measured temperature may not truly reflect the actual maximum temperature of the stator coil and iron core of the motor. , Bring potential hazards to the safe operation of the motor.
  • the Chinese patent document with the publication number CN 109787381A and the publication date on May 21, 2019 discloses a motor cooling device, which is characterized in that the motor cooling device includes:
  • a plurality of stator ventilation holes formed in the stator core along the axial direction of the stator core;
  • a first mounting member and a second mounting member each having a shape corresponding to the stator core, and are respectively coupled to both sides of the stator core in the axial direction, and A plurality of first ventilation holes and a plurality of second ventilation holes are respectively formed along the axial direction;
  • the bracket includes a main body, and first and second supporting portions protruding radially outward from both sides of the main body, the main body is formed with a plurality of bracket ventilation holes, and the first mounting The second mounting member and the second mounting member are respectively supported on the first support portion and the second support portion, wherein the first vent hole and the second vent hole are respectively connected to the plurality of stator vent holes Corresponding stator ventilation holes in the center form a first ventilation channel and a second ventilation channel that are independent of each other, and the airflow entering and flowing through the first ventilation channel and the second ventilation channel from both sides of the axial direction of the stator core The flow directions of the stents are reverse to each other, and flow out to the outside through the plurality of bracket ventilation holes.
  • the Chinese patent document with the publication number CN 202856493U and the publication date on April 3, 2013 discloses a wind deflector between the rotor poles of a hydro-turbine generator, which includes a wind deflector, a screw, a fastener, a pressure plate, a backing plate and
  • the fixed block is characterized in that: the fixed block is assembled in the yoke in advance, the screw is screwed into the fixed block, and the backing plate and fasteners are used to lock; finally, the backing plate, air deflector and pressure plate are sleeved into the upper end of the screw and tightened Pieces are clamped.
  • the present invention provides a device for reducing the circumferential temperature difference between the large-diameter motor coil and the iron core.
  • the present invention can not only improve the circumferential uniformity of the airflow; but also can be shielded by adjusting the air volume according to actual needs.
  • the size of the air inlet is adjusted to the area of different air inlets to realize the uniform distribution of wind speed in the circumferential direction; the whole device has a simple structure, easy to implement, convenient to adjust, and has obvious effects, which can reduce the circumferential temperature difference of the motor by 10-20K.
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core comprising a rotor frame, a rotor core mounted on the rotor frame, and a plurality of rotor magnets arranged along the axial direction of the rotor core, and is characterized in that: A multi-segment stator core segment, a first core pressing plate, a second iron core pressing plate and a tensioning screw, the stator core segment is laminated by silicon steel sheets, and the silicon steel sheets are provided with slots for placing stator coils, any adjacent ones A stator channel steel is connected between the two stator core segments.
  • the two stator core segments and the stator channel steel form a stator ventilation groove for the circulation of cooling medium.
  • the tightening screw penetrates the multi-segment stator iron core segment to tighten the screw
  • One end is fixedly connected to the first iron core pressing plate
  • the other end of the tensioning screw is fixedly connected to the second iron core pressing plate
  • an air gap is provided between the rotor magnet and the stator core section
  • the multi-section stator core section is fixedly connected with one
  • the first circumferential ring plate, one end of the first circumferential ring plate is fixedly connected with the first iron core pressing plate, the other end of the first circumferential ring plate is fixedly connected with the second iron core pressing plate, the first circumferential ring plate
  • At least three axial upright plates are fixedly connected to the inner wall of the inner wall.
  • An air inlet cavity or an air outlet cavity is formed between the first circumferential ring plate, the stator core section and two adjacent axial upright plates.
  • the cavity and the air outlet cavity are arranged at intervals, and the first circumferential ring plate is provided with a plurality of air inlet holes and a plurality of air outlet holes.
  • the air inlet holes communicate with the corresponding air inlet cavity, and the air outlet holes are connected with the corresponding air inlet holes.
  • the air outlet cavity is connected, the outer wall of the first circumferential ring plate is fixedly connected with a first vertical plate and a second vertical plate, and a second circumferential ring is fixedly connected between the first vertical plate and the second vertical plate.
  • the first vertical plate is connected with an oblique wind deflector through a plurality of connecting plates, the second circumferential ring plate is connected with an air outlet pipe communicating with the air outlet cavity, and the first vertical plate is connected with An air inlet pipe communicating with the air inlet cavity, the air inlet hole is provided with an air volume adjustment plate for adjusting the air circumferential resistance, and the air volume adjustment plate is hinged with the first circumferential ring plate; the air volume adjustment plate shields the air inlet hole A wind-passing area is formed. In a circumferentially symmetric unit, the wind-passing area near the fan axis near the fan axis is the smallest, and the wind-passing area far away from the fan axis is the largest.
  • the thickness of the silicon steel sheet is 0.5 mm or 0.35 mm.
  • the plurality of air inlet holes and the plurality of air outlet holes provided on the first circumferential ring plate are arranged in a staggered manner in the axial direction of the first circumferential ring plate and are arranged at intervals in the circumferential direction of the first circumferential ring plate.
  • the rotor frame, the first circumferential ring plate and the first vertical plate enclose a large cavity, the air inlet pipe communicates with the large cavity, and the large cavity communicates with the air inlet cavity.
  • the oblique wind deflector is located at the outlet of the air inlet pipe, and the included angle between the oblique wind deflector and the first vertical plate is 30-60°.
  • the stator core segment is made by stacking silicon steel sheets.
  • the silicon steel sheets are provided with slots for placing stator coils.
  • a stator channel steel is connected between any two adjacent stator core segments.
  • Two stator cores The section and the stator channel steel form a stator ventilation groove for the circulation of cooling medium.
  • the tension screw penetrates the multi-section stator core section. One end of the tension screw is fixedly connected with the first iron core pressing plate, and the other end of the tightening screw is connected with the second iron core pressing plate.
  • an air gap is provided between the rotor magnet and the stator core segment, a first circumferential ring plate is fixedly connected to the multi-segment stator core segment, one end of the first circumferential ring plate is fixedly connected with the first iron core pressing plate, and the first circumferential ring plate is fixedly connected to the first iron core pressing plate.
  • the other end of the circumferential ring plate is fixedly connected to the second iron core pressing plate, and at least three axial vertical plates are fixedly connected to the inner wall of the first circumferential ring plate, the first circumferential ring plate, the stator core segment and the adjacent two An air inlet cavity and an air outlet cavity are formed between the two axial vertical plates.
  • the air inlet cavity and the air outlet cavity are arranged at intervals.
  • the first circumferential ring plate is provided with multiple air inlet holes and multiple air outlet holes.
  • the air holes communicate with the corresponding air inlet cavity
  • the air outlet holes communicate with the corresponding air outlet cavity
  • the outer wall of the first circumferential ring plate is fixedly connected with the first vertical plate and the second vertical plate
  • the first vertical plate and the A second circumferential ring plate is fixedly connected between the second vertical plates
  • the first vertical plate is connected with an oblique wind deflector through a plurality of connecting plates
  • the second circumferential ring plate is connected with an air outlet pipe communicating with the air outlet cavity.
  • An air inlet pipe communicating with the air inlet cavity is connected to a vertical plate, and an air volume adjustment plate for adjusting the air circumferential resistance is arranged on the air inlet hole.
  • the air volume adjustment plate is hinged with the first circumferential ring plate.
  • the size of the air inlet hole area is adjusted to realize the even distribution of wind speed in the circumferential direction; the whole device is simple in structure, easy to implement, convenient to adjust, and has obvious effects. It can reduce the circumferential temperature difference of the motor by 10-20K.
  • the thickness of the silicon steel sheet is 0.5 mm or 0.35 mm, which has strong selection flexibility and is easy to process and manufacture.
  • the multiple air inlet holes and multiple air outlet holes provided on the first circumferential ring plate are arranged staggered in the axial direction of the first circumferential ring plate and spaced in the circumferential direction of the first circumferential ring plate The arrangement can further improve the circumferential uniformity of the airflow and ensure a good uniform heat dissipation effect.
  • the rotor frame, the first circumferential ring plate and the first vertical plate enclose a large cavity, the air inlet pipe is connected to the large cavity, and the large cavity is connected to the air inlet cavity, which can make ventilation smooth and facilitate Improve the heat dissipation effect.
  • the oblique wind deflector is located at the outlet of the air inlet pipe, and the included angle between the oblique wind deflector and the first vertical plate is 30-60°. If the angle is too small, it will form a strong impact on the outlet of the fan Blocking will reduce the total air volume of the motor; if the angle is too large, the effect of circumferential diffusion of the airflow, axial turning and improving the circumferential uniformity of the airflow is not good. With this specific range, a good balance can be achieved between the two.
  • the air volume adjustment plate blocks the air inlet to form a wind passing area.
  • the wind passing area near the fan axis near the fan axis is the smallest in a circumferentially symmetric unit, and the far fan end far away from the fan axis is the largest. This specific arrangement can maximize the uniformity of heat dissipation and improve the heat dissipation effect.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • FIG. 2 is a schematic diagram of the structure of the stator core section of the present invention.
  • Figure 3 is a schematic diagram of the air flow structure in the circumferential wind area of the present invention.
  • FIG. 4 is a schematic diagram of the arrangement structure of the circumferential air inlet and outlet holes of the present invention.
  • Figure 5 is a schematic diagram of the structure of the invention used in a fan
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core includes a rotor frame 1, a rotor core 2 mounted on the rotor frame 1, and a rotor core 2 arranged axially along the rotor core.
  • a rotor magnet 3 also includes a multi-section stator core section 4, a first core pressing plate 5, a second core pressing plate 6 and a tightening screw 7.
  • the stator core section 4 is made of silicon steel sheets 8 stacked together.
  • a slot body 10 for placing the stator coil 9 is opened on the 8; a stator channel steel 11 is connected between any two adjacent stator core segments 4, and the two stator core segments 4 and the stator channel steel 11 form one for cooling
  • An air gap 13 is provided between the rotor magnet 3 and the stator core segment 4, and a first circumferential ring plate 14 is fixedly connected to the multi-segment stator core segment 4.
  • the first circumferential ring plate 14 One end of the first circumferential ring plate is fixedly connected to the first iron core pressing plate 5, the other end of the first circumferential ring plate 14 is fixedly connected to the second iron core pressing plate 6, and the inner wall of the first circumferential ring plate 14 is fixedly connected with at least three axial An air inlet cavity 16 or an air outlet cavity 17 is formed between the vertical plate 15, the first circumferential ring plate 14, the stator core section 4 and the two adjacent axial vertical plates 15.
  • the air inlet cavity 16 and the air outlet The cavities 17 are arranged at intervals, and the first circumferential ring plate 14 is provided with a plurality of air inlet holes 18 and a plurality of air outlet holes 19, and the air inlet holes 18 communicate with the corresponding air inlet cavity 16 and the air outlet holes 19 is communicated with the corresponding air outlet cavity 17, and the outer wall of the first circumferential ring plate 14 is fixedly connected with a first vertical plate 20 and a second vertical plate 21, the first vertical plate 20 and the second vertical plate A second circumferential ring plate 22 is fixedly connected between 21, the first vertical plate 20 is connected with an oblique wind deflector 24 through a plurality of connecting plates 23, and the second circumferential ring plate 22 is connected with the air outlet cavity 17
  • a communicating air outlet pipe 25 is connected to the first vertical plate 20 with an air inlet pipe 26 communicating with the air inlet cavity 16, and the air inlet hole 18 is provided with an air volume adjusting plate 27 for adjusting the circumferential air resistance,
  • the stator core section is made by stacking silicon steel sheets.
  • the silicon steel sheets are provided with slots for placing stator coils.
  • a stator channel steel is connected between any two adjacent stator core sections. ,
  • the two stator core sections and the stator channel steel form a stator ventilation groove for cooling medium circulation.
  • the tensioning screw penetrates through the multi-section stator core. One end of the tensioning screw is fixedly connected with the first core pressing plate, and the other end of the tensioning screw is fixed.
  • an air gap is provided between the rotor magnet and the stator iron core section, a first circumferential ring plate is fixedly connected to the multi-stage stator iron core section, and one end of the first circumferential ring plate is connected to the first iron core
  • the pressing plate is fixedly connected, the other end of the first circumferential ring plate is fixedly connected with the second iron core pressing plate, the inner wall of the first circumferential ring plate is fixedly connected with at least three axial vertical plates, the first circumferential ring plate and the stator core
  • An air inlet cavity or an air outlet cavity is formed between the section and two adjacent axial vertical plates. The air inlet cavity and the air outlet cavity are arranged at intervals.
  • the first circumferential ring plate is provided with a plurality of air inlet holes and A plurality of air outlet holes, the air inlet holes are connected with the corresponding air inlet cavity, the air outlet holes are connected with the corresponding air outlet cavity, and the outer wall of the first circumferential ring plate is fixedly connected with the first vertical plate and the second vertical plate
  • a second circumferential ring plate is fixedly connected between the first vertical plate and the second vertical plate, the first vertical plate is connected with an oblique wind deflector through a plurality of connecting plates, and the second circumferential ring plate is connected with the air outlet cavity
  • the connected air outlet pipe, the first vertical plate is connected with the air inlet pipe communicating with the air inlet cavity, the air inlet hole is provided with an air volume adjusting plate for adjusting the air circumferential resistance, the air volume adjusting plate and the first circumferential ring plate Articulated, when the motor is running, on the one hand, the high-speed airflow from the outlet of the fan hits the oblique wind de
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core includes a rotor frame 1, a rotor core 2 mounted on the rotor frame 1, and a rotor core 2 arranged axially along the rotor core.
  • a rotor magnet 3 also includes a multi-segment stator core segment 4, a first core pressing plate 5, a second iron core pressing plate 6 and a tightening screw 7.
  • the stator core segment 4 is formed by stacking silicon steel sheets 8.
  • a slot body 10 for placing the stator coil 9 is opened on the 8; a stator channel steel 11 is connected between any two adjacent stator core segments 4, and the two stator core segments 4 and the stator channel steel 11 form one for cooling
  • An air gap 13 is provided between the rotor magnet 3 and the stator core segment 4, and a first circumferential ring plate 14 is fixedly connected to the multi-segment stator core segment 4.
  • the first circumferential ring plate 14 One end of the first circumferential ring plate is fixedly connected to the first iron core pressing plate 5, the other end of the first circumferential ring plate 14 is fixedly connected to the second iron core pressing plate 6, and the inner wall of the first circumferential ring plate 14 is fixedly connected with at least three axial An air inlet cavity 16 or an air outlet cavity 17 is formed between the vertical plate 15, the first circumferential ring plate 14, the stator core section 4 and the two adjacent axial vertical plates 15.
  • the air inlet cavity 16 and the air outlet The cavities 17 are arranged at intervals, and the first circumferential ring plate 14 is provided with a plurality of air inlet holes 18 and a plurality of air outlet holes 19, and the air inlet holes 18 communicate with the corresponding air inlet cavity 16 and the air outlet holes 19 is communicated with the corresponding air outlet cavity 17, and the outer wall of the first circumferential ring plate 14 is fixedly connected with a first vertical plate 20 and a second vertical plate 21, the first vertical plate 20 and the second vertical plate A second circumferential ring plate 22 is fixedly connected between 21, the first vertical plate 20 is connected with an oblique wind deflector 24 through a plurality of connecting plates 23, and the second circumferential ring plate 22 is connected with the air outlet cavity 17
  • a communicating air outlet pipe 25 is connected to the first vertical plate 20 with an air inlet pipe 26 communicating with the air inlet cavity 16, and the air inlet hole 18 is provided with an air volume adjusting plate 27 for adjusting the circumferential air resistance,
  • the thickness of the silicon steel sheet 8 is 0.5 mm.
  • the plurality of air inlet holes 18 and the plurality of air outlet holes 19 provided on the first circumferential ring plate 14 are arranged staggered in the axial direction of the first circumferential ring plate 14 and are arranged on the circumference of the first circumferential ring plate 14 Arranged in an upward interval.
  • the rotor frame 1, the first circumferential ring plate 14 and the first vertical plate 20 enclose a large cavity 28, the air inlet pipe 26 communicates with the large cavity 28, and the large cavity 28 communicates with the air inlet cavity 16.
  • This embodiment is a preferred embodiment.
  • the multiple air inlet holes and the multiple air outlet holes provided on the first circumferential ring plate are arranged staggered in the axial direction of the first circumferential ring plate and are arranged on the first circumferential ring plate.
  • the plates are arranged at intervals in the circumferential direction, which can further improve the circumferential uniformity of the airflow and ensure a good uniform heat dissipation effect.
  • the rotor frame, the first circumferential ring plate and the first vertical plate enclose a large cavity, the air inlet pipe is connected with the large cavity, and the large cavity is connected with the air inlet cavity, which can make ventilation smooth and improve the heat dissipation effect.
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core includes a rotor frame 1, a rotor core 2 mounted on the rotor frame 1, and a rotor core 2 arranged axially along the rotor core.
  • a rotor magnet 3 also includes a multi-section stator core section 4, a first core pressing plate 5, a second core pressing plate 6 and a tightening screw 7.
  • the stator core section 4 is made of silicon steel sheets 8 stacked together.
  • a slot body 10 for placing the stator coil 9 is opened on the 8; a stator channel steel 11 is connected between any two adjacent stator core segments 4, and the two stator core segments 4 and the stator channel steel 11 form one for cooling
  • An air gap 13 is provided between the rotor magnet 3 and the stator core segment 4, and a first circumferential ring plate 14 is fixedly connected to the multi-segment stator core segment 4.
  • the first circumferential ring plate 14 One end of the first circumferential ring plate is fixedly connected to the first iron core pressing plate 5, the other end of the first circumferential ring plate 14 is fixedly connected to the second iron core pressing plate 6, and the inner wall of the first circumferential ring plate 14 is fixedly connected with at least three axial An air inlet cavity 16 or an air outlet cavity 17 is formed between the vertical plate 15, the first circumferential ring plate 14, the stator core section 4 and the two adjacent axial vertical plates 15.
  • the air inlet cavity 16 and the air outlet The cavities 17 are arranged at intervals, and the first circumferential ring plate 14 is provided with a plurality of air inlet holes 18 and a plurality of air outlet holes 19, and the air inlet holes 18 communicate with the corresponding air inlet cavity 16 and the air outlet holes 19 is communicated with the corresponding air outlet cavity 17, and the outer wall of the first circumferential ring plate 14 is fixedly connected with a first vertical plate 20 and a second vertical plate 21, the first vertical plate 20 and the second vertical plate A second circumferential ring plate 22 is fixedly connected between 21, the first vertical plate 20 is connected with an oblique wind deflector 24 through a plurality of connecting plates 23, and the second circumferential ring plate 22 is connected with the air outlet cavity 17
  • a communicating air outlet pipe 25 is connected to the first vertical plate 20 with an air inlet pipe 26 communicating with the air inlet cavity 16, and the air inlet hole 18 is provided with an air volume adjusting plate 27 for adjusting the circumferential air resistance,
  • the thickness of the silicon steel sheet 8 is 0.35 mm.
  • the plurality of air inlet holes 18 and the plurality of air outlet holes 19 provided on the first circumferential ring plate 14 are arranged staggered in the axial direction of the first circumferential ring plate 14 and are arranged on the circumference of the first circumferential ring plate 14 Arranged in an upward interval.
  • the rotor frame 1, the first circumferential ring plate 14 and the first vertical plate 20 enclose a large cavity 28, the air inlet pipe 26 communicates with the large cavity 28, and the large cavity 28 communicates with the air inlet cavity 16.
  • the oblique wind deflector 24 is located at the outlet of the air inlet pipe 26, and the included angle between the oblique wind deflector 24 and the first vertical plate 20 is 30°.
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core includes a rotor frame 1, a rotor core 2 mounted on the rotor frame 1, and a rotor core 2 arranged axially along the rotor core.
  • a rotor magnet 3 also includes a multi-section stator core section 4, a first core pressing plate 5, a second core pressing plate 6 and a tightening screw 7.
  • the stator core section 4 is made of silicon steel sheets 8 stacked together.
  • a slot body 10 for placing the stator coil 9 is opened on the 8; a stator channel steel 11 is connected between any two adjacent stator core segments 4, and the two stator core segments 4 and the stator channel steel 11 form one for cooling
  • An air gap 13 is provided between the rotor magnet 3 and the stator core segment 4, and a first circumferential ring plate 14 is fixedly connected to the multi-segment stator core segment 4.
  • the first circumferential ring plate 14 One end of the first circumferential ring plate is fixedly connected to the first iron core pressing plate 5, the other end of the first circumferential ring plate 14 is fixedly connected to the second iron core pressing plate 6, and the inner wall of the first circumferential ring plate 14 is fixedly connected with at least three axial An air inlet cavity 16 or an air outlet cavity 17 is formed between the vertical plate 15, the first circumferential ring plate 14, the stator core section 4 and the two adjacent axial vertical plates 15.
  • the air inlet cavity 16 and the air outlet The cavities 17 are arranged at intervals, and the first circumferential ring plate 14 is provided with a plurality of air inlet holes 18 and a plurality of air outlet holes 19, and the air inlet holes 18 communicate with the corresponding air inlet cavity 16 and the air outlet holes 19 is communicated with the corresponding air outlet cavity 17, and the outer wall of the first circumferential ring plate 14 is fixedly connected with a first vertical plate 20 and a second vertical plate 21, the first vertical plate 20 and the second vertical plate A second circumferential ring plate 22 is fixedly connected between 21, the first vertical plate 20 is connected with an oblique wind deflector 24 through a plurality of connecting plates 23, and the second circumferential ring plate 22 is connected with the air outlet cavity 17
  • a communicating air outlet pipe 25 is connected to the first vertical plate 20 with an air inlet pipe 26 communicating with the air inlet cavity 16, and the air inlet hole 18 is provided with an air volume adjusting plate 27 for adjusting the circumferential air resistance,
  • the thickness of the silicon steel sheet 8 is 0.35 mm.
  • the plurality of air inlet holes 18 and the plurality of air outlet holes 19 provided on the first circumferential ring plate 14 are arranged staggered in the axial direction of the first circumferential ring plate 14 and are arranged on the circumference of the first circumferential ring plate 14 Arranged in an upward interval.
  • the rotor frame 1, the first circumferential ring plate 14 and the first vertical plate 20 enclose a large cavity 28, the air inlet pipe 26 communicates with the large cavity 28, and the large cavity 28 communicates with the air inlet cavity 16.
  • the oblique wind deflector 24 is located at the outlet of the air inlet pipe 26, and the included angle between the oblique wind deflector 24 and the first vertical plate 20 is 45°.
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core includes a rotor frame 1, a rotor core 2 mounted on the rotor frame 1, and a rotor core 2 arranged axially along the rotor core.
  • a rotor magnet 3 also includes a multi-section stator core section 4, a first core pressing plate 5, a second core pressing plate 6 and a tightening screw 7.
  • the stator core section 4 is made of silicon steel sheets 8 stacked together.
  • a slot body 10 for placing the stator coil 9 is opened on the 8; a stator channel steel 11 is connected between any two adjacent stator core segments 4, and the two stator core segments 4 and the stator channel steel 11 form one for cooling
  • An air gap 13 is provided between the rotor magnet 3 and the stator core segment 4, and a first circumferential ring plate 14 is fixedly connected to the multi-segment stator core segment 4.
  • the first circumferential ring plate 14 One end of the first circumferential ring plate is fixedly connected to the first iron core pressing plate 5, the other end of the first circumferential ring plate 14 is fixedly connected to the second iron core pressing plate 6, and the inner wall of the first circumferential ring plate 14 is fixedly connected with at least three axial An air inlet cavity 16 or an air outlet cavity 17 is formed between the vertical plate 15, the first circumferential ring plate 14, the stator core section 4 and the two adjacent axial vertical plates 15.
  • the air inlet cavity 16 and the air outlet The cavities 17 are arranged at intervals, and the first circumferential ring plate 14 is provided with a plurality of air inlet holes 18 and a plurality of air outlet holes 19, and the air inlet holes 18 communicate with the corresponding air inlet cavity 16 and the air outlet holes 19 is communicated with the corresponding air outlet cavity 17, and the outer wall of the first circumferential ring plate 14 is fixedly connected with a first vertical plate 20 and a second vertical plate 21, the first vertical plate 20 and the second vertical plate A second circumferential ring plate 22 is fixedly connected between 21, the first vertical plate 20 is connected with an oblique wind deflector 24 through a plurality of connecting plates 23, and the second circumferential ring plate 22 is connected with the air outlet cavity 17
  • a communicating air outlet pipe 25 is connected to the first vertical plate 20 with an air inlet pipe 26 communicating with the air inlet cavity 16, and the air inlet hole 18 is provided with an air volume adjusting plate 27 for adjusting the circumferential air resistance,
  • the thickness of the silicon steel sheet 8 is 0.35 mm.
  • the plurality of air inlet holes 18 and the plurality of air outlet holes 19 provided on the first circumferential ring plate 14 are arranged staggered in the axial direction of the first circumferential ring plate 14 and are arranged on the circumference of the first circumferential ring plate 14 Arranged in an upward interval.
  • the rotor frame 1, the first circumferential ring plate 14 and the first vertical plate 20 enclose a large cavity 28, the air inlet pipe 26 communicates with the large cavity 28, and the large cavity 28 communicates with the air inlet cavity 16.
  • the oblique wind deflector 24 is located at the outlet of the air inlet pipe 26, and the included angle between the oblique wind deflector 24 and the first vertical plate 20 is 60°.
  • a device for reducing the circumferential temperature difference between a large-diameter motor coil and an iron core includes a rotor frame 1, a rotor core 2 mounted on the rotor frame 1, and a rotor core 2 arranged axially along the rotor core.
  • a rotor magnet 3 also includes a multi-segment stator core segment 4, a first core pressing plate 5, a second core pressing plate 6 and a tightening screw 7.
  • the stator core segment 4 is made of silicon steel sheets 8 stacked together, and the silicon steel sheets A slot body 10 for placing the stator coil 9 is opened on the 8; a stator channel steel 11 is connected between any two adjacent stator core segments 4, and the two stator core segments 4 and the stator channel steel 11 form one for cooling
  • An air gap 13 is provided between the rotor magnet 3 and the stator core segment 4, and a first circumferential ring plate 14 is fixedly connected to the multi-segment stator core segment 4.
  • the first circumferential ring plate 14 One end of the first circumferential ring plate is fixedly connected to the first iron core pressing plate 5, the other end of the first circumferential ring plate 14 is fixedly connected to the second iron core pressing plate 6, and the inner wall of the first circumferential ring plate 14 is fixedly connected with at least three axial An air inlet cavity 16 or an air outlet cavity 17 is formed between the vertical plate 15, the first circumferential ring plate 14, the stator core section 4 and the two adjacent axial vertical plates 15.
  • the air inlet cavity 16 and the air outlet The cavities 17 are arranged at intervals, and the first circumferential ring plate 14 is provided with a plurality of air inlet holes 18 and a plurality of air outlet holes 19, and the air inlet holes 18 communicate with the corresponding air inlet cavity 16 and the air outlet holes 19 is communicated with the corresponding air outlet cavity 17, and the outer wall of the first circumferential ring plate 14 is fixedly connected with a first vertical plate 20 and a second vertical plate 21, the first vertical plate 20 and the second vertical plate A second circumferential ring plate 22 is fixedly connected between 21, the first vertical plate 20 is connected with an oblique wind deflector 24 through a plurality of connecting plates 23, and the second circumferential ring plate 22 is connected with the air outlet cavity 17
  • a communicating air outlet pipe 25 is connected to the first vertical plate 20 with an air inlet pipe 26 communicating with the air inlet cavity 16, and the air inlet hole 18 is provided with an air volume adjusting plate 27 for adjusting the circumferential air resistance,
  • the thickness of the silicon steel sheet 8 is 0.35 mm.
  • the plurality of air inlet holes 18 and the plurality of air outlet holes 19 provided on the first circumferential ring plate 14 are arranged staggered in the axial direction of the first circumferential ring plate 14 and are arranged on the circumference of the first circumferential ring plate 14 Arranged in an upward interval.
  • the rotor frame 1, the first circumferential ring plate 14 and the first vertical plate 20 enclose a large cavity 28, the air inlet pipe 26 communicates with the large cavity 28, and the large cavity 28 communicates with the air inlet cavity 16.
  • the oblique wind deflector 24 is located at the outlet of the air inlet pipe 26, and the included angle between the oblique wind deflector 24 and the first vertical plate 20 is 60°.
  • the air volume adjusting plate 27 shields the air inlet 18 to form an air passing area 29.
  • the air passing area 29 near the fan axis is the smallest in a circumferentially symmetric unit, and the air passing area 29 far away from the fan axis is the largest. .
  • the stator core section is made by stacking silicon steel sheets.
  • the silicon steel sheets are provided with slots for placing stator coils.
  • a stator channel steel is connected between any two adjacent stator core sections.
  • the two stator core segments and the stator channel steel form a stator ventilation groove for the circulation of cooling medium.
  • the tension screw penetrates through the multi-segment stator core segment.
  • One end of the tension screw is fixedly connected with the first core pressing plate, and the other end of the tension screw is connected with The second iron core pressing plate is fixedly connected, an air gap is provided between the rotor magnet and the stator iron core section, a first circumferential ring plate is fixedly connected to the multi-segment stator iron core section, and one end of the first circumferential ring plate is connected to the first iron core pressing plate Fixed connection, the other end of the first circumferential ring plate is fixedly connected with the second iron core pressing plate, the inner wall of the first circumferential ring plate is fixedly connected with at least three axial vertical plates, the first circumferential ring plate and the stator core section An air inlet cavity or an air outlet cavity is formed between the two adjacent axial vertical plates, the air inlet cavity and the air outlet cavity are arranged at intervals, and the first circumferential ring plate is provided with a plurality of air inlet holes and a plurality of air outlets.
  • the air inlet is connected with the corresponding air inlet cavity
  • the air outlet is connected with the corresponding air outlet cavity
  • the outer wall of the first circumferential ring plate is fixedly connected with the first vertical plate and the second vertical plate
  • a second circumferential ring plate is fixedly connected between the first vertical plate and the second vertical plate
  • the first vertical plate is connected with an oblique wind deflector through a plurality of connecting plates
  • the second circumferential ring plate is connected with the air outlet cavity
  • the first vertical plate is connected with the air inlet pipe communicating with the air inlet cavity
  • the air inlet hole is provided with an air volume adjustment plate for adjusting the air circumferential resistance
  • the air volume adjustment plate is hinged to the first circumferential ring plate
  • the board shields the size of the air inlet holes to adjust the area of different air inlet holes to realize the even distribution of wind speed in the circumferential direction; the whole device is simple in structure, easy to implement, convenient to adjust, and has obvious effects, which can reduce the circumferential temperature difference of the motor by 10-20K.
  • the air volume adjustment plate shields the air inlet to form a wind passing area.
  • the wind passing area near the fan axis is the smallest, and the far fan far away from the fan axis is the largest. This specific arrangement is adopted. , It can maximize the uniformity of heat dissipation and improve the heat dissipation effect.

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Abstract

本发明公开了一种具有降低大直径电机线圈和铁心周向温差的装置，属于风力发电机领域，包括转子机座、转子铁心和转子磁钢，其特征在于：还包括多段定子铁心段、第一铁心压板、第二铁心压板和拉紧螺杆，定子铁心段由硅钢片叠装而成，硅钢片上开有槽体，多段定子铁心段上固定有第一周向环板，第一周向环板的内壁上固定有至少三个轴向立板，第一周向环板的外壁上固定有第一竖板和第二竖板，第一竖板和第二竖板之间固定有第二周向环板，第一竖板通过多个连接板连接有一个斜向挡风板，进风孔上设置有风量调节板。本发明能够提高气流周向均匀度；能够对不同进风孔面积进行调节以实现风速周向均匀分布，能降低电机周向温差。

Description

一种具有降低大直径电机线圈和铁心周向温差的装置 技术领域
本发明涉及到风力发电机技术领域，尤其涉及一种具有降低大直径电机线圈和铁心周向温差的装置。
背景技术
对于低速大型旋转电机特别是直驱风力发电机，转速仅有10r/min左右，旋转部件产生的压力仅有几帕，无法驱动足够的空气在电机内部流动带走电机运行过程中产生的损耗，对于该种电机常用的解决方案是在电机机座上布置专门风机用作空气流动的主要压力源，但是由于刹车、锁定、出线盒、进人孔等布置的需要，风机无法在机座周向进行均匀布置，通常电机风机的进出风口只能布置于机座的上部位置，计算和试验均表明：该布置会引起定子线圈和铁心周向温度分布不均，在电机采用高热负荷设计时，周向温差可达30K-40K。
近年来，也出现了风机在周向均匀布置的情况，但由于电机直径大，周向空间大，风机供风速度高，同样会导致风机风口对应区域和风机之间区域定子线圈和铁心温度相差较大，引起周向温度分布不均匀。
目前对电机温度的限值主要针对最热点温度，因此周向温度不均匀的现象一方面会严重影响电机的最大出力，另一方面，测量温度可能无法真实反映电机定子线圈、铁心实际的最高温度，给电机安全运行带来潜在隐患。
公开号为CN 109787381A，公开日为2019年05月21日的中国专利文献公开了一种电机冷却装置，其特征在于，所述电机冷却装置包括：
多个定子通风孔，所述多个定子通风孔沿着定子铁心的轴向形成在所述定子铁心中；
第一安装件和第二安装件，所述第一安装件和所述第二安装件均具有与所述定子铁心相对应的形状，分别结合到所述定子铁心的轴向的两侧，并且分别沿轴向形成有多个第一通风孔和多个第二通风孔；
支架，所述支架包括主体以及从所述主体的两侧沿着径向向外突出的第一支撑部和第二支撑部，所述主体形成有多个支架通风孔，并且所述第一安装件和所述第二安装件分别支撑在所述第一支撑部和所述第二支撑部上，其中，所述第一通风孔和所述第二通风孔分别与所述多个定子通风孔中对应的定子通风孔形成彼此独立的第一通风道和第二通风道，从所述定子铁心的轴向的两侧进入并流经所述第一通风道和所述第二通风道的气流的流向互逆，并且通过所述多个支架通风孔流出到外部。
公开号为CN 202856493U，公开日为2013年04月03日的中国专利文献公开了一种水轮发电机转子极间导风板，包括导风板、螺杆、紧固件、压板、垫板和固定块，其特征是：预先把固定块装配于磁轭中，螺杆拧入固定块，并用垫板和紧固件锁定；最后将垫板、导风板和压板套入螺杆上端，并用紧固件夹紧。
以上述专利文献为代表的现有技术，由于结构设计欠佳，均不能有效提高气流周向均匀度，不能实现风速周向均匀分布，不能有效降低电机周向温差。
发明内容
本发明为了克服上述现有技术的缺陷，提供一种具有降低大直径电机线圈和铁心周向温差的装置，本发明不仅能够提高气流周向均匀度；而且能够根据实际需要通过调节风量调节板遮挡进风孔的大小来对不同进风孔面积进行调节以实现风速周向均匀分布；整个装置结构简单、易于实施，方便调节，效果明显，能降低电机周向温差达10-20K。
本发明通过下述技术方案实现：
一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座、安装在转子机座上的转子铁心和沿转子铁心轴向布置的多个转子磁钢，其特征在于：还包括多段定子铁心段、第一铁心压板、第二铁心压板和拉紧螺杆，所述定子铁心段由硅钢片叠装而成，所述硅钢片上开有用于放置定子线圈的槽体，任意相邻的两段定子铁心段之间连接有一个定子槽钢，两段定子铁心段与定子槽钢形成一个用于冷却介质流通的定子通风沟，所述拉紧螺杆贯穿多段定子铁心段，拉紧螺杆的一端与第一铁心压板固定连接，拉紧螺杆的另一端与第二铁心压板固定连接，所述转子磁钢和定子铁心段之间设置有气隙，所述多段定子铁心段上固定连接有一个第一周向环板，所述第一周向环板的一端与第一铁心压板固定连接，第一周向环板的另一端与第二铁心压板固定连接，所述第一周向环板的内壁上固定连接有至少三个轴向立板，第一周向环板、定子铁心段及相邻两个轴向立板之间形成一个进风腔或一个出风腔，所述进风腔和出风腔间隔布置，所述第一周向环板上开有多个进风孔和多个出风孔，所述进风孔与对应的进风腔相连通，出风孔与对应的出风腔相连通，所述第一周向环板的外壁上固定连接有第一竖板和第二竖板，所述第一竖板和第二竖板之间固定连接有第二周向环板，所述第一竖板通过多个连接板连接有一个斜向挡风板，所述第二周向环板上连接有与出风腔相通的出风管，所述第一竖板上连接有与进风腔相通的进风管，所述进风孔上设置有用于调节空气周向阻力的风量调节板，风量调节板与第一周向环板铰接；所述风量调节板遮挡进风孔形成一个过风面积，在一个周向对称单元内靠近风机轴线的近风机端过风面积最小，远离风机轴线的远风机端过风面积最大。
所述硅钢片的厚度为0.5mm或0.35mm。
所述第一周向环板上设置的多个进风孔和多个出风孔在第一周向环板的轴向上错位布置且在第一周向环板的周向上间隔排列布置。
所述转子机座、第一周向环板和第一竖板围成一个大空腔，进风管与大空腔相连通，大空腔与进风腔相连通。
所述斜向挡风板位于进风管的出口处，斜向挡风板与第一竖板之间的夹角为30-60°。
本发明的有益效果主要表现在以下方面：
一、本发明，定子铁心段由硅钢片叠装而成，硅钢片上开有用于放置定子线圈的槽体，任意相邻的两段定子铁心段之间连接有一个定子槽钢，两段定子铁心段与定子槽钢形成一个用于冷却介质流通的定子通风沟，拉紧螺杆贯穿多段定子铁心段，拉紧螺杆的一端与第一铁心压板固定连接，拉紧螺杆的另一端与第二铁心压板固定连接，转子磁钢和定子铁心段之间设置有气隙，多段定子铁心段上固定连接有一个第一周向环板，第一周向环板的一端与第一铁心压板固定连接，第一周向环板的另一端与第二铁心压板固定连接，第一周向环板的内壁上固定连接有至少三个轴向立板，第一周向环板、定子铁心段及相邻两个轴向立板之间形成一个进风腔和一个出风腔，进风腔和出风腔间隔布置，第一周向环板上开有多个进风孔和多个出风孔，进风孔与对应的进风腔相连通，出风孔与对应的出风腔相连通，第一周向环板的外壁上固定连接有第一竖板和第二竖板，第一竖板和第二竖板之间固定连接有第二周向环板，第一竖板通过多个连接板连接有一个斜向挡风板，第二周向环板上连接有与出风腔相通的出风管，第一竖板上连接有与进风腔相通的进风管，进风孔上设置有用于调节空气周向阻力的风量调节板，风量调节板与第一周向环板铰接，电机运行时，一方面，风机出口高速气流撞击斜向挡风板，引起气流周向扩散、轴向转向，从而能够提高气流周向均匀度；另一方面，能够根据实际需要通过调节风量调节板遮挡进风孔的大小来对不同进风孔面积进行调节以实现风速周向均匀分布；整个装置结构简单、易于实施，方便调节，效果明显，能降低电机周向温差达10-20K。
二、本发明，硅钢片的厚度为0.5mm或0.35mm，选择灵活性强，易于加工制造。
三、本发明，第一周向环板上设置的多个进风孔和多个出风孔在第一周向环板的轴向上错位布置且在第一周向环板的周向上间隔排列布置，能够进一步提高气流周向均匀度，保障良好的均匀散热效果。
四、本发明，转子机座、第一周向环板和第一竖板围成一个大空腔，进风管与大空腔相连通，大空腔与进风腔相连通，能够使通风流畅，利于提高散热效果。
五、本发明，斜向挡风板位于进风管的出口处，斜向挡风板与第一竖板之间的夹角为30-60°，角度太小，将对风机出口形成强烈的阻挡，会减小电机总风量；角度太大，气流周向扩散、轴向转向及提高气流周向均匀度的效果不佳，采用该特定的范围，二者之间能够取得良好的平衡。
六、本发明，风量调节板遮挡进风孔形成一个过风面积，在一个周向对称单元内靠近风机轴线的近风机端过风面积最小，远离风机轴线的远风机端过风面积最大，采用这种特定的布置，能够最大化的保障散热均匀性，提高散热效果。
附图说明
下面将结合说明书附图和具体实施方式对本发明作进一步的具体说明，其中：
图1为本发明的结构示意图；
图2为本发明定子铁心段的结构示意图；
图3为本发明周向风区气流流动结构示意图；
图4为本发明周向进风孔和出风孔布置结构示意图；
图5为本发明用于风机的结构示意图；
图中标记：1、转子机座，2、转子铁心，3、转子磁钢，4、定子铁心段，5、第一铁心压板，6、第二铁心压板，7、拉紧螺杆，8、硅钢片，9、定子线圈，10、槽体，11、定子槽钢，12、定子通风沟，13、气隙，14、第一周向环板，15、轴向立板，16、进风腔，17、出风腔，18、进风孔，19、出风孔，20、第一竖板，21、第二竖板，22、第二周向环板，23、连接板，24、斜向挡风板，25、出风管，26、进风管，27、风量调节板，28、大空腔，29、过风面积。
具体实施方式
实施例1
参见图1-图5，一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座1、安装在转子机座1上的转子铁心2和沿转子铁心2轴向布置的多个转子磁钢3，还包括多段定子铁心段4、第一铁心压板5、第二铁心压板6和拉紧螺杆7，所述定子铁心段4由硅钢片8叠装而成，所述硅钢片8上开有用于放置定子线圈9的槽体10，任意相邻的两段定子铁心段4之间连接有一个定子槽钢11，两段定子铁心段4与定子槽钢11形成一个用于冷却介质流通的定子通风沟12，所述拉紧螺杆7贯穿多段定子铁心段4，拉紧螺杆7的一端与第一铁心压板5固定连接，拉紧螺杆7的另一端与第二铁心压板6固定连接，所述转子磁钢3和定子铁心段4之间设置有气隙13，所述多段定子铁心段4上固定连接有一个第一周向环板14，所述第一周向环板14的一端与第一铁心压板5固定连接，第一周向环板14的另一端与第二铁心 压板6固定连接，所述第一周向环板14的内壁上固定连接有至少三个轴向立板15，第一周向环板14、定子铁心段4及相邻两个轴向立板15之间形成一个进风腔16或一个出风腔17，所述进风腔16和出风腔17间隔布置，所述第一周向环板14上开有多个进风孔18和多个出风孔19，所述进风孔18与对应的进风腔16相连通，出风孔19与对应的出风腔17相连通，所述第一周向环板14的外壁上固定连接有第一竖板20和第二竖板21，所述第一竖板20和第二竖板21之间固定连接有第二周向环板22，所述第一竖板20通过多个连接板23连接有一个斜向挡风板24，所述第二周向环板22上连接有与出风腔17相通的出风管25，所述第一竖板20上连接有与进风腔16相通的进风管26，所述进风孔18上设置有用于调节空气周向阻力的风量调节板27，风量调节板27与第一周向环板14铰接。
本实施例为最基本的实施方式，定子铁心段由硅钢片叠装而成，硅钢片上开有用于放置定子线圈的槽体，任意相邻的两段定子铁心段之间连接有一个定子槽钢，两段定子铁心段与定子槽钢形成一个用于冷却介质流通的定子通风沟，拉紧螺杆贯穿多段定子铁心段，拉紧螺杆的一端与第一铁心压板固定连接，拉紧螺杆的另一端与第二铁心压板固定连接，转子磁钢和定子铁心段之间设置有气隙，多段定子铁心段上固定连接有一个第一周向环板，第一周向环板的一端与第一铁心压板固定连接，第一周向环板的另一端与第二铁心压板固定连接，第一周向环板的内壁上固定连接有至少三个轴向立板，第一周向环板、定子铁心段及相邻两个轴向立板之间形成一个进风腔或一个出风腔，所述进风腔和出风腔间隔布置，第一周向环板上开有多个进风孔和多个出风孔，进风孔与对应的进风腔相连通，出风孔与对应的出风腔相连通，第一周向环板的外壁上固定连接有第一竖板和第二竖板，第一竖板和第二竖板之间固定连接有第二周向环板，第一竖板通过多个连接板连接有一个斜向挡风板，第二周向环板上连接有与出风腔相通的出风管，第一竖板上连接有与进风腔相通的进风管，进风孔上设置有用于调节空气周向阻力的风量调节板，风量调节板与第一周向环板铰接，电机运行时，一方面，风机出口高速气流撞击斜向挡风板，引起气流周向扩散、轴向转向，从而能够提高气流周向均匀度；另一方面，能够根据实际需要通过调节风量调节板遮挡进风孔的大小来对不同进风孔面积进行调节以实现风速周向均匀分布；整个装置结构简单、易于实施，方便调节，效果明显，能降低电机周向温差达10-20K。
实施例2
参见图1-图5，一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座1、安装在转子机座1上的转子铁心2和沿转子铁心2轴向布置的多个转子磁钢3，还包括多段定子铁心段4、第一铁心压板5、第二铁心压板6和拉紧螺杆7，所述定子铁心段4由硅钢片8 叠装而成，所述硅钢片8上开有用于放置定子线圈9的槽体10，任意相邻的两段定子铁心段4之间连接有一个定子槽钢11，两段定子铁心段4与定子槽钢11形成一个用于冷却介质流通的定子通风沟12，所述拉紧螺杆7贯穿多段定子铁心段4，拉紧螺杆7的一端与第一铁心压板5固定连接，拉紧螺杆7的另一端与第二铁心压板6固定连接，所述转子磁钢3和定子铁心段4之间设置有气隙13，所述多段定子铁心段4上固定连接有一个第一周向环板14，所述第一周向环板14的一端与第一铁心压板5固定连接，第一周向环板14的另一端与第二铁心压板6固定连接，所述第一周向环板14的内壁上固定连接有至少三个轴向立板15，第一周向环板14、定子铁心段4及相邻两个轴向立板15之间形成一个进风腔16或一个出风腔17，所述进风腔16和出风腔17间隔布置，所述第一周向环板14上开有多个进风孔18和多个出风孔19，所述进风孔18与对应的进风腔16相连通，出风孔19与对应的出风腔17相连通，所述第一周向环板14的外壁上固定连接有第一竖板20和第二竖板21，所述第一竖板20和第二竖板21之间固定连接有第二周向环板22，所述第一竖板20通过多个连接板23连接有一个斜向挡风板24，所述第二周向环板22上连接有与出风腔17相通的出风管25，所述第一竖板20上连接有与进风腔16相通的进风管26，所述进风孔18上设置有用于调节空气周向阻力的风量调节板27，风量调节板27与第一周向环板14铰接。
所述硅钢片8的厚度为0.5mm。
所述第一周向环板14上设置的多个进风孔18和多个出风孔19在第一周向环板14的轴向上错位布置且在第一周向环板14的周向上间隔排列布置。
所述转子机座1、第一周向环板14和第一竖板20围成一个大空腔28，进风管26与大空腔28相连通，大空腔28与进风腔16相连通。
本实施例为一较佳实施方式，第一周向环板上设置的多个进风孔和多个出风孔在第一周向环板的轴向上错位布置且在第一周向环板的周向上间隔排列布置，能够进一步提高气流周向均匀度，保障良好的均匀散热效果。
转子机座、第一周向环板和第一竖板围成一个大空腔，进风管与大空腔相连通，大空腔与进风腔相连通，能够使通风流畅，利于提高散热效果。
实施例3
参见图1-图5，一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座1、安装在转子机座1上的转子铁心2和沿转子铁心2轴向布置的多个转子磁钢3，还包括多段定子铁心段4、第一铁心压板5、第二铁心压板6和拉紧螺杆7，所述定子铁心段4由硅钢片8叠装而成，所述硅钢片8上开有用于放置定子线圈9的槽体10，任意相邻的两段定子铁心段 4之间连接有一个定子槽钢11，两段定子铁心段4与定子槽钢11形成一个用于冷却介质流通的定子通风沟12，所述拉紧螺杆7贯穿多段定子铁心段4，拉紧螺杆7的一端与第一铁心压板5固定连接，拉紧螺杆7的另一端与第二铁心压板6固定连接，所述转子磁钢3和定子铁心段4之间设置有气隙13，所述多段定子铁心段4上固定连接有一个第一周向环板14，所述第一周向环板14的一端与第一铁心压板5固定连接，第一周向环板14的另一端与第二铁心压板6固定连接，所述第一周向环板14的内壁上固定连接有至少三个轴向立板15，第一周向环板14、定子铁心段4及相邻两个轴向立板15之间形成一个进风腔16或一个出风腔17，所述进风腔16和出风腔17间隔布置，所述第一周向环板14上开有多个进风孔18和多个出风孔19，所述进风孔18与对应的进风腔16相连通，出风孔19与对应的出风腔17相连通，所述第一周向环板14的外壁上固定连接有第一竖板20和第二竖板21，所述第一竖板20和第二竖板21之间固定连接有第二周向环板22，所述第一竖板20通过多个连接板23连接有一个斜向挡风板24，所述第二周向环板22上连接有与出风腔17相通的出风管25，所述第一竖板20上连接有与进风腔16相通的进风管26，所述进风孔18上设置有用于调节空气周向阻力的风量调节板27，风量调节板27与第一周向环板14铰接。
所述硅钢片8的厚度为0.35mm。
所述第一周向环板14上设置的多个进风孔18和多个出风孔19在第一周向环板14的轴向上错位布置且在第一周向环板14的周向上间隔排列布置。
所述转子机座1、第一周向环板14和第一竖板20围成一个大空腔28，进风管26与大空腔28相连通，大空腔28与进风腔16相连通。
所述斜向挡风板24位于进风管26的出口处，斜向挡风板24与第一竖板20之间的夹角为30°。
实施例4
参见图1-图5，一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座1、安装在转子机座1上的转子铁心2和沿转子铁心2轴向布置的多个转子磁钢3，还包括多段定子铁心段4、第一铁心压板5、第二铁心压板6和拉紧螺杆7，所述定子铁心段4由硅钢片8叠装而成，所述硅钢片8上开有用于放置定子线圈9的槽体10，任意相邻的两段定子铁心段4之间连接有一个定子槽钢11，两段定子铁心段4与定子槽钢11形成一个用于冷却介质流通的定子通风沟12，所述拉紧螺杆7贯穿多段定子铁心段4，拉紧螺杆7的一端与第一铁心压板5固定连接，拉紧螺杆7的另一端与第二铁心压板6固定连接，所述转子磁钢3和定子铁心段4之间设置有气隙13，所述多段定子铁心段4上固定连接有一个第一周向环板14，所述 第一周向环板14的一端与第一铁心压板5固定连接，第一周向环板14的另一端与第二铁心压板6固定连接，所述第一周向环板14的内壁上固定连接有至少三个轴向立板15，第一周向环板14、定子铁心段4及相邻两个轴向立板15之间形成一个进风腔16或一个出风腔17，所述进风腔16和出风腔17间隔布置，所述第一周向环板14上开有多个进风孔18和多个出风孔19，所述进风孔18与对应的进风腔16相连通，出风孔19与对应的出风腔17相连通，所述第一周向环板14的外壁上固定连接有第一竖板20和第二竖板21，所述第一竖板20和第二竖板21之间固定连接有第二周向环板22，所述第一竖板20通过多个连接板23连接有一个斜向挡风板24，所述第二周向环板22上连接有与出风腔17相通的出风管25，所述第一竖板20上连接有与进风腔16相通的进风管26，所述进风孔18上设置有用于调节空气周向阻力的风量调节板27，风量调节板27与第一周向环板14铰接。
所述硅钢片8的厚度为0.35mm。
所述第一周向环板14上设置的多个进风孔18和多个出风孔19在第一周向环板14的轴向上错位布置且在第一周向环板14的周向上间隔排列布置。
所述转子机座1、第一周向环板14和第一竖板20围成一个大空腔28，进风管26与大空腔28相连通，大空腔28与进风腔16相连通。
所述斜向挡风板24位于进风管26的出口处，斜向挡风板24与第一竖板20之间的夹角为45°。
实施例5
参见图1-图5，一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座1、安装在转子机座1上的转子铁心2和沿转子铁心2轴向布置的多个转子磁钢3，还包括多段定子铁心段4、第一铁心压板5、第二铁心压板6和拉紧螺杆7，所述定子铁心段4由硅钢片8叠装而成，所述硅钢片8上开有用于放置定子线圈9的槽体10，任意相邻的两段定子铁心段4之间连接有一个定子槽钢11，两段定子铁心段4与定子槽钢11形成一个用于冷却介质流通的定子通风沟12，所述拉紧螺杆7贯穿多段定子铁心段4，拉紧螺杆7的一端与第一铁心压板5固定连接，拉紧螺杆7的另一端与第二铁心压板6固定连接，所述转子磁钢3和定子铁心段4之间设置有气隙13，所述多段定子铁心段4上固定连接有一个第一周向环板14，所述第一周向环板14的一端与第一铁心压板5固定连接，第一周向环板14的另一端与第二铁心压板6固定连接，所述第一周向环板14的内壁上固定连接有至少三个轴向立板15，第一周向环板14、定子铁心段4及相邻两个轴向立板15之间形成一个进风腔16或一个出风腔17，所述进风腔16和出风腔17间隔布置，所述第一周向环板14上开有多个进风孔18和多个出 风孔19，所述进风孔18与对应的进风腔16相连通，出风孔19与对应的出风腔17相连通，所述第一周向环板14的外壁上固定连接有第一竖板20和第二竖板21，所述第一竖板20和第二竖板21之间固定连接有第二周向环板22，所述第一竖板20通过多个连接板23连接有一个斜向挡风板24，所述第二周向环板22上连接有与出风腔17相通的出风管25，所述第一竖板20上连接有与进风腔16相通的进风管26，所述进风孔18上设置有用于调节空气周向阻力的风量调节板27，风量调节板27与第一周向环板14铰接。
所述硅钢片8的厚度为0.35mm。
所述第一周向环板14上设置的多个进风孔18和多个出风孔19在第一周向环板14的轴向上错位布置且在第一周向环板14的周向上间隔排列布置。
所述转子机座1、第一周向环板14和第一竖板20围成一个大空腔28，进风管26与大空腔28相连通，大空腔28与进风腔16相连通。
所述斜向挡风板24位于进风管26的出口处，斜向挡风板24与第一竖板20之间的夹角为60°。
实施例6
参见图1-图5，一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座1、安装在转子机座1上的转子铁心2和沿转子铁心2轴向布置的多个转子磁钢3，还包括多段定子铁心段4、第一铁心压板5、第二铁心压板6和拉紧螺杆7，所述定子铁心段4由硅钢片8叠装而成，所述硅钢片8上开有用于放置定子线圈9的槽体10，任意相邻的两段定子铁心段4之间连接有一个定子槽钢11，两段定子铁心段4与定子槽钢11形成一个用于冷却介质流通的定子通风沟12，所述拉紧螺杆7贯穿多段定子铁心段4，拉紧螺杆7的一端与第一铁心压板5固定连接，拉紧螺杆7的另一端与第二铁心压板6固定连接，所述转子磁钢3和定子铁心段4之间设置有气隙13，所述多段定子铁心段4上固定连接有一个第一周向环板14，所述第一周向环板14的一端与第一铁心压板5固定连接，第一周向环板14的另一端与第二铁心压板6固定连接，所述第一周向环板14的内壁上固定连接有至少三个轴向立板15，第一周向环板14、定子铁心段4及相邻两个轴向立板15之间形成一个进风腔16或一个出风腔17，所述进风腔16和出风腔17间隔布置，所述第一周向环板14上开有多个进风孔18和多个出风孔19，所述进风孔18与对应的进风腔16相连通，出风孔19与对应的出风腔17相连通，所述第一周向环板14的外壁上固定连接有第一竖板20和第二竖板21，所述第一竖板20和第二竖板21之间固定连接有第二周向环板22，所述第一竖板20通过多个连接板23连接有一个斜向挡风板24，所述第二周向环板22上连接有与出风腔17相通的出风管25，所述第一 竖板20上连接有与进风腔16相通的进风管26，所述进风孔18上设置有用于调节空气周向阻力的风量调节板27，风量调节板27与第一周向环板14铰接。
所述硅钢片8的厚度为0.35mm。
所述第一周向环板14上设置的多个进风孔18和多个出风孔19在第一周向环板14的轴向上错位布置且在第一周向环板14的周向上间隔排列布置。
所述转子机座1、第一周向环板14和第一竖板20围成一个大空腔28，进风管26与大空腔28相连通，大空腔28与进风腔16相连通。
所述斜向挡风板24位于进风管26的出口处，斜向挡风板24与第一竖板20之间的夹角为60°。
所述风量调节板27遮挡进风孔18形成一个过风面积29，在一个周向对称单元内靠近风机轴线的近风机端过风面积29最小，远离风机轴线的远风机端过风面积29最大。
本实施例为最佳实施方式，定子铁心段由硅钢片叠装而成，硅钢片上开有用于放置定子线圈的槽体，任意相邻的两段定子铁心段之间连接有一个定子槽钢，两段定子铁心段与定子槽钢形成一个用于冷却介质流通的定子通风沟，拉紧螺杆贯穿多段定子铁心段，拉紧螺杆的一端与第一铁心压板固定连接，拉紧螺杆的另一端与第二铁心压板固定连接，转子磁钢和定子铁心段之间设置有气隙，多段定子铁心段上固定连接有一个第一周向环板，第一周向环板的一端与第一铁心压板固定连接，第一周向环板的另一端与第二铁心压板固定连接，第一周向环板的内壁上固定连接有至少三个轴向立板，第一周向环板、定子铁心段及相邻两个轴向立板之间形成一个进风腔或一个出风腔，所述进风腔和出风腔间隔布置，第一周向环板上开有多个进风孔和多个出风孔，进风孔与对应的进风腔相连通，出风孔与对应的出风腔相连通，第一周向环板的外壁上固定连接有第一竖板和第二竖板，第一竖板和第二竖板之间固定连接有第二周向环板，第一竖板通过多个连接板连接有一个斜向挡风板，第二周向环板上连接有与出风腔相通的出风管，第一竖板上连接有与进风腔相通的进风管，进风孔上设置有用于调节空气周向阻力的风量调节板，风量调节板与第一周向环板铰接，电机运行时，一方面，风机出口高速气流撞击斜向挡风板，引起气流周向扩散、轴向转向，从而能够提高气流周向均匀度；另一方面，能够根据实际需要通过调节风量调节板遮挡进风孔的大小来对不同进风孔面积进行调节以实现风速周向均匀分布；整个装置结构简单、易于实施，方便调节，效果明显，能降低电机周向温差达10-20K。
风量调节板遮挡进风孔形成一个过风面积，在一个周向对称单元内靠近风机轴线的近风机端过风面积最小，远离风机轴线的远风机端过风面积最大，采用这种特定的布置，能够 最大化的保障散热均匀性，提高散热效果。

Claims (5)

  1. 一种具有降低大直径电机线圈和铁心周向温差的装置，包括转子机座(1)、安装在转子机座(1)上的转子铁心(2)和沿转子铁心(2)轴向布置的多个转子磁钢(3)，其特征在于：还包括多段定子铁心段(4)、第一铁心压板(5)、第二铁心压板(6)和拉紧螺杆(7)，所述定子铁心段(4)由硅钢片(8)叠装而成，所述硅钢片(8)上开有用于放置定子线圈(9)的槽体(10)，任意相邻的两段定子铁心段(4)之间连接有一个定子槽钢(11)，两段定子铁心段(4)与定子槽钢(11)形成一个用于冷却介质流通的定子通风沟(12)，所述拉紧螺杆(7)贯穿多段定子铁心段(4)，拉紧螺杆(7)的一端与第一铁心压板(5)固定连接，拉紧螺杆(7)的另一端与第二铁心压板(6)固定连接，所述转子磁钢(3)和定子铁心段(4)之间设置有气隙(13)，所述多段定子铁心段(4)上固定连接有一个第一周向环板(14)，所述第一周向环板(14)的一端与第一铁心压板(5)固定连接，第一周向环板(14)的另一端与第二铁心压板(6)固定连接，第一周向环板(14)、定子铁心段(4)及相邻两个轴向立板(15)之间形成一个进风腔(16)或一个出风腔(17)，所述进风腔(16)和出风腔(17)间隔布置，所述第一周向环板(14)上开有多个进风孔(18)和多个出风孔(19)，所述进风孔(18)与对应的进风腔(16)相连通，出风孔(19)与对应的出风腔(17)相连通，所述第一周向环板(14)的外壁上固定连接有第一竖板(20)和第二竖板(21)，所述第一竖板(20)和第二竖板(21)之间固定连接有第二周向环板(22)，所述第一竖板(20)通过多个连接板(23)连接有一个斜向挡风板(24)，所述第二周向环板(22)上连接有与出风腔(17)相通的出风管(25)，所述第一竖板(20)上连接有与进风腔(16)相通的进风管(26)，所述进风孔(18)上设置有用于调节空气周向阻力的风量调节板(27)，风量调节板(27)与第一周向环板(14)铰接；所述风量调节板(27)遮挡进风孔(18)形成一个过风面积(29)，在一个周向对称单元内靠近风机轴线的近风机端过风面积(29)最小，远离风机轴线的远风机端过风面积(29)最大。
  2. 根据权利要求1所述的一种具有降低大直径电机线圈和铁心周向温差的装置，其特征在于：所述硅钢片(8)的厚度为0.5mm或0.35mm。
  3. 根据权利要求1所述的一种具有降低大直径电机线圈和铁心周向温差的装置，其特征在于：所述第一周向环板(14)上设置的多个进风孔(18)和多个出风孔(19)在第一周向环板(14)的轴向上错位布置且在第一周向环板(14)的周向上间隔排列布置。
  4. 根据权利要求1所述的一种具有降低大直径电机线圈和铁心周向温差的装置，其特征在于：所述转子机座(1)、第一周向环板(14)和第一竖板(20)围成一个大空腔(28)，进风管(26)与大空腔(28)相连通，大空腔(28)与进风腔(16)相连通。
  5. 根据权利要求1所述的一种具有降低大直径电机线圈和铁心周向温差的装置，其特征在于：所述斜向挡风板(24)位于进风管(26)的出口处，斜向挡风板(24)与第一竖板(20)之间的夹角为30-60°。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4116583A1 (en) * 2021-07-05 2023-01-11 Siemens Gamesa Renewable Energy A/S Wind turbine generator comprising a cooling circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110429746B (zh) * 2019-08-30 2020-11-20 东方电气集团东方电机有限公司 一种具有降低大直径电机线圈和铁心周向温差的装置
EP4007131A4 (en) * 2019-08-30 2022-10-12 Dongfang Electric Machinery Co., Ltd. METHOD AND DEVICE FOR REDUCING THE PERIPHERAL TEMPERATURE DIFFERENCE BETWEEN THE COIL AND THE IRON CORE OF A MOTOR
CN112994285B (zh) * 2021-04-13 2022-09-09 哈动国家水力发电设备工程技术研究中心有限公司 一种带有支撑固定机构的风力发电机定子

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138947A (ja) * 1987-11-26 1989-05-31 Toshiba Corp 回転電機
CN1109225A (zh) * 1993-08-17 1995-09-27 Abb管理有限公司 气体冷却的电机
CN102332780A (zh) * 2011-09-30 2012-01-25 东方电气集团东方电机有限公司 一种风力发电机
CN202856493U (zh) 2012-06-04 2013-04-03 杭州力源发电设备有限公司 水轮发电机转子极间导风板
CN204118962U (zh) * 2014-08-21 2015-01-21 山西电机制造有限公司 一种电机内置挡风板以及电机
CN109787381A (zh) 2017-11-13 2019-05-21 北京金风科创风电设备有限公司 电机冷却装置及电机
CN110429747A (zh) * 2019-08-30 2019-11-08 东方电气集团东方电机有限公司 一种降低电机线圈和铁心周向温差的方法
CN110429746A (zh) * 2019-08-30 2019-11-08 东方电气集团东方电机有限公司 一种具有降低大直径电机线圈和铁心周向温差的装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7900792U1 (de) * 1979-01-10 1979-04-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Eigenbelueftete elektrische maschine
JP4482001B2 (ja) * 2007-01-15 2010-06-16 株式会社日立製作所 強制冷却型回転電機
CN201341046Y (zh) * 2008-12-31 2009-11-04 无锡哈电电机有限公司 直流电机的通风结构
CN102064636B (zh) * 2011-01-12 2012-07-25 哈尔滨理工大学 具有定子多回路往复式通风系统的汽轮发电机
EP3694084A1 (en) * 2012-06-06 2020-08-12 GE Renewable Technologies Rotor for an electric machine and method for retrofit
EP2975742B1 (de) * 2014-07-14 2017-08-30 Siemens Aktiengesellschaft Elektrische Maschine mit verbesserter Kühlung
DE102014216692A1 (de) * 2014-08-22 2016-02-25 Bayerische Motoren Werke Aktiengesellschaft Elektrische Antriebsmaschine für ein Kraftfahrzeug
JP2016153717A (ja) * 2015-02-18 2016-08-25 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． 天井埋込型室内機及びそれを用いた空気調和機
CN105245042B (zh) * 2015-11-03 2018-01-12 中科盛创（青岛）电气股份有限公司 一种永磁风力发电机内风路结构
CN109474113B (zh) * 2018-09-06 2020-06-23 新疆金风科技股份有限公司 电机及风力发电机组

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138947A (ja) * 1987-11-26 1989-05-31 Toshiba Corp 回転電機
CN1109225A (zh) * 1993-08-17 1995-09-27 Abb管理有限公司 气体冷却的电机
CN102332780A (zh) * 2011-09-30 2012-01-25 东方电气集团东方电机有限公司 一种风力发电机
CN202856493U (zh) 2012-06-04 2013-04-03 杭州力源发电设备有限公司 水轮发电机转子极间导风板
CN204118962U (zh) * 2014-08-21 2015-01-21 山西电机制造有限公司 一种电机内置挡风板以及电机
CN109787381A (zh) 2017-11-13 2019-05-21 北京金风科创风电设备有限公司 电机冷却装置及电机
CN110429747A (zh) * 2019-08-30 2019-11-08 东方电气集团东方电机有限公司 一种降低电机线圈和铁心周向温差的方法
CN110429746A (zh) * 2019-08-30 2019-11-08 东方电气集团东方电机有限公司 一种具有降低大直径电机线圈和铁心周向温差的装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4007132A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4116583A1 (en) * 2021-07-05 2023-01-11 Siemens Gamesa Renewable Energy A/S Wind turbine generator comprising a cooling circuit

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