CN117977877A - Wind Turbines - Google Patents

Wind Turbines Download PDF

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Publication number
CN117977877A
CN117977877A CN202311824262.5A CN202311824262A CN117977877A CN 117977877 A CN117977877 A CN 117977877A CN 202311824262 A CN202311824262 A CN 202311824262A CN 117977877 A CN117977877 A CN 117977877A
Authority
CN
China
Prior art keywords
rotating
rotating part
fixed part
stator
annular flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202311824262.5A
Other languages
Chinese (zh)
Other versions
CN117977877B (en
Inventor
付明志
郭小江
王东
胡鹏飞
陈雷
高耀志
秦猛
薄强
姜兴广
申旭辉
孙栩
赫卫国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Donghu Laboratory
Hunan Xiangdian Power Co ltd
Huaneng Clean Energy Research Institute
Original Assignee
Hubei Donghu Laboratory
Hunan Xiangdian Power Co ltd
Huaneng Clean Energy Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hubei Donghu Laboratory, Hunan Xiangdian Power Co ltd, Huaneng Clean Energy Research Institute filed Critical Hubei Donghu Laboratory
Priority to CN202311824262.5A priority Critical patent/CN117977877B/en
Publication of CN117977877A publication Critical patent/CN117977877A/en
Application granted granted Critical
Publication of CN117977877B publication Critical patent/CN117977877B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

本发明公开了一种风力发电机，包括第一转动部、第二转动部和固定部，所述第一转动部可转动地装配于所述固定部内，所述第二转动部可转动地套设于所述固定部的外侧，且所述第一转动部和所述第二转动部可共轴独立转动；所述第一转动部上设有内转子，所述第二转动部上设有外转子，所述固定部上设有内定子和外定子，所述内定子与所述内转子相对布置，所述外定子与所述外转子相对布置；所述固定部具有第一端和第二端，所述第一转动部的外径沿从第二端到第一端的方向逐渐增大，所述固定部的外径沿从第二端到第一端的方向逐渐增大以便于将部分所述固定部插装至所述第二转动部内。本发明实施例的风力发电机具有便于维护的优点。

The present invention discloses a wind turbine generator, comprising a first rotating part, a second rotating part and a fixed part, wherein the first rotating part is rotatably mounted in the fixed part, the second rotating part is rotatably sleeved on the outer side of the fixed part, and the first rotating part and the second rotating part can rotate independently on the same axis; the first rotating part is provided with an inner rotor, the second rotating part is provided with an outer rotor, the fixed part is provided with an inner stator and an outer stator, the inner stator is arranged opposite to the inner rotor, and the outer stator is arranged opposite to the outer rotor; the fixed part has a first end and a second end, the outer diameter of the first rotating part gradually increases along the direction from the second end to the first end, and the outer diameter of the fixed part gradually increases along the direction from the second end to the first end so as to facilitate the insertion of part of the fixed part into the second rotating part. The wind turbine generator of the embodiment of the present invention has the advantage of being easy to maintain.

Description

Wind power generator
Technical Field
The invention relates to the technical field of power generation equipment, in particular to a wind driven generator.
Background
Along with the continuous increase of the power of the wind turbine, the length of the wind wheel of the fan is longer and longer, and the manufacturing and running conditions of the wind wheel, the main bearing and other parts are close to the bearing limit of related materials. The novel fans with high wind energy utilization rate such as the serial double-wind-wheel fans become research hot spots, and in order to pursue the maximum comprehensive wind energy utilization rate of the double-wind-wheel fans, the front wind wheel and the rear wind wheel are required to realize complete structures in mechanical and electrical aspects, and the high-efficiency collaborative operation of the rotating speed is realized. The double wind wheel fans in the related art have complex structures and are inconvenient to overhaul and maintain.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
To this end, an embodiment of the present invention proposes a wind power generator.
The wind driven generator comprises a first rotating part, a second rotating part and a fixing part, wherein the first rotating part is rotatably assembled in the fixing part, the second rotating part is rotatably sleeved on the outer side of the fixing part, and the first rotating part and the second rotating part can coaxially and independently rotate; the first rotating part is provided with an inner rotor, the second rotating part is provided with an outer rotor, the fixed part is provided with an inner stator and an outer stator, the inner stator is arranged opposite to the inner rotor, and the outer stator is arranged opposite to the outer rotor; the fixed portion has a first end and a second end, the outer diameter of the first rotating portion gradually increases in a direction from the second end to the first end so as to insert a part of the first rotating portion from the first end to the fixed portion, and the outer diameter of the fixed portion gradually increases in a direction from the second end to the first end so as to insert a part of the fixed portion into the second rotating portion.
According to the wind driven generator disclosed by the embodiment of the invention, the first rotating part and the second rotating part which coaxially rotate are arranged, wherein the first rotating part is connected with the first fan blade, the second rotating part is connected with the second fan blade, the first rotating part can be connected with the inner rotor in an inserting way to the fixing part so that the inner stator and the inner rotor are oppositely arranged, the second rotating part can be sleeved on the outer peripheral side of the fixing part together with the outer rotor so that the outer rotor and the outer stator are oppositely arranged, the outer diameter of the first rotating part is gradually increased along the direction from the second end to the first end, and the outer diameter of the fixing part is gradually increased along the direction from the second end to the first end, so that the first rotating part is conveniently inserted into the inner side of the fixing part, and the second rotating part is sleeved on the outer side of the fixing part, so that the wind driven generator disclosed by the embodiment of the invention is conveniently assembled and disassembled. In addition, the first rotating part is provided with an inner rotor, the second rotating part is provided with an outer rotor, the fixing part is provided with an inner stator which is arranged opposite to the inner rotor, the fixing part is also provided with an outer stator which is arranged corresponding to the outer rotor, and an inner-outer coaxial generator is formed.
In some embodiments, the second rotating portion and the fixing portion are cylindrical structures, an inner diameter of the second rotating portion gradually increases in a direction from the second end to the first end so as to insert a portion of the fixing portion into the second rotating portion, and an inner diameter of the fixing portion gradually increases in a direction from the second end to the first end so as to insert a portion of the first rotating portion into the fixing portion.
In some embodiments, the fixing portion is provided with a magnetism isolating sleeve, and the magnetism isolating sleeve extends along the length direction of the fixing portion so as to isolate a magnetic field inside the fixing portion and a magnetic field outside the fixing portion.
In some embodiments, the fixing portion includes a cylindrical portion and an annular baffle plate, the annular baffle plate is disposed at the first end, the cylindrical portion extends along a length direction of the fixing portion, the magnetism isolating sleeve is disposed between the inner stator and the outer stator, and the magnetism isolating sleeve is disposed between an inner wall of the cylindrical portion and an outer wall of the cylindrical portion.
In some embodiments, a cooling flow passage is arranged in the magnetism isolating sleeve, and the cooling flow passage is bent and extended in the magnetism isolating sleeve to be suitable for cooling medium to flow in the magnetism isolating sleeve.
In some embodiments, the fixing portion includes a reduced diameter section, a part of the second rotating portion is rotatably assembled on an outer peripheral side of the reduced diameter section through a bearing, the reduced diameter section is provided at the second end, and an outer diameter of the reduced diameter section gradually decreases in a direction from the first end to the second end, so that the fixing portion is conveniently inserted into the second rotating portion.
In some embodiments, the second rotating portion includes a sleeve portion, a first annular flange and a second annular flange, the outer rotor is disposed on the sleeve portion, the first annular flange and the second annular flange are disposed on a side of the sleeve portion near the second end, the first annular flange and the second annular flange are assembled on an outer circumferential side of the reduced diameter section, and the first annular flange and the second annular flange have a set interval along a length direction of the fixing portion to support the sleeve portion.
In some embodiments, the first rotating portion includes a rotating shaft, the inner rotor is sleeved on a portion of an outer peripheral side of the rotating shaft, the rotating shaft includes an extension section, and the extension section is disposed on a side of the first end away from the second end so as to be suitable for the first rotating portion to be connected with the first wind wheel.
In some embodiments, the second rotating portion includes a flange plate, where the flange plate is disposed on a side of the second end facing away from the first end, and the flange plate is connected to the sleeve portion, so as to be suitable for connecting the second rotating portion to the second wind wheel.
In some embodiments, the fixing portion is provided with a third annular flange on the inner side, the fixing portion includes a first bearing, the first bearing is disposed on the inner edge of the third annular flange, a second bearing is disposed on the rotating shaft, and the second bearing is adapted to be connected between the rotating shaft and the inner edge of the annular baffle.
Drawings
Fig. 1 is a schematic structural view of a wind turbine according to an embodiment of the present invention.
Fig. 2 is a schematic view of a fixing portion of a wind turbine according to an embodiment of the present invention.
Fig. 3 is a schematic view of a first rotating part of a wind turbine according to an embodiment of the present invention.
Fig. 4 is a schematic view of a second rotating part of the wind turbine according to the embodiment of the present invention.
Reference numerals:
1. a first rotating part; 11. an inner rotor; 12. a rotating shaft; 121. an epitaxial section; 13. a second bearing;
2. a second rotating part; 21. an outer rotor; 22. a flange; 23. a sleeve portion; 24. a first annular flange; 25. a second annular flange;
3. A fixing part; 31. a cylindrical portion; 311. an annular groove; 32. an inner stator; 33. an outer stator; 34. a reducing section; 35. an annular baffle; 36. a third annular flange; 37. a first bearing.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A wind power generator according to an embodiment of the present invention will be described with reference to fig. 1,2, 3 and 4.
The wind driven generator according to the embodiment of the invention comprises a first rotating part 1, a second rotating part 2 and a fixed part 3, wherein the first rotating part 1 is rotatably assembled in the fixed part 3, the second rotating part 2 is rotatably sleeved outside the fixed part 3, and the first rotating part 1 and the second rotating part 2 can coaxially and independently rotate.
Specifically, the fixing portion 3 is a cylindrical structure extending back and forth, and the front end of the fixing portion 3 is provided with an opening, and at least part of the first rotating portion 1 can be inserted into the fixing portion 3 from the front end opening of the fixing portion 3 and rotationally engaged into the fixing portion 3. The second rotating part 2 is of a cylindrical structure extending forwards and backwards, the front end of the second rotating part 2 is provided with an opening, and at least part of the fixing part 3 can be inserted into the second rotating part 2 from the opening of the front end of the second rotating part 2 and can be rotatably sleeved on the outer periphery side of the fixing part 3 in the second rotating part 2.
The first rotating part 1 is provided with an inner rotor 11, the second rotating part 2 is provided with an outer rotor 21, the fixed part 3 is provided with an inner stator 32 and an outer stator 33, the inner stator 32 is arranged opposite to the inner rotor 11, and the outer stator 33 is arranged opposite to the outer rotor 21.
Specifically, the inner wall of the fixed part 3 is sleeved on the outer peripheral side of the inner stator 32, the outer wall of the fixed part 3 is sleeved with the outer stator 33, the outer peripheral side of the first rotating part 1 is sleeved with the inner rotor 11, the inner wall of the second rotating part 2 is provided with the outer rotor 21, when the first rotating part 1, the second rotating part 2 and the fixed part 3 are matched together, the inner rotor 11 is overlapped with the inner stator 32 in the front-back direction, and the outer rotor 21 is overlapped with the outer stator 33 in the front-back direction, so that the inner rotor 11 is rotatably matched with the inner side of the inner stator 32, and the outer rotor 21 is rotatably sleeved on the outer peripheral side of the outer stator 33.
The fixing portion 3 has a first end and a second end, and the outer diameter of the first rotating portion 1 is gradually increased in a direction from the second end to the first end so as to insert a part of the first rotating portion 1 into the fixing portion 3 from the first end, and the outer diameter of the fixing portion 3 is gradually increased in a direction from the second end to the first end so as to insert a part of the fixing portion 3 into the second rotating portion 2.
Specifically, the first end is the front end of fixed part 3, the second end is the rear end of fixed part 3, the external diameter of fixed part 3 reduces gradually from the front to the back, when the periphery side of fixed part 3 is located to second rotation portion 2 cover, the rear end of fixed part 3 gets into the inner chamber of second rotation portion 2 from the front end of second rotation portion 2 earlier, the external diameter of fixed part 3 reduces gradually from the front to the back and makes the outer peripheral profile of fixed part 3 and the inner wall profile of second rotation portion 2 adapt to on the one hand, on the other hand is convenient for with fixed part 3 assembly to in the second rotation portion 2.
The outer diameter of the first rotating part 1 gradually decreases from front to back, and when the first rotating part 1 is assembled in the inner cavity of the fixed part 3, the rear end of the first rotating part 1 firstly enters the inner cavity of the fixed part 3 from the front end of the fixed part 3, and the outer diameter of the first rotating part 1 gradually decreases from front to back, so that on one hand, the outer circumferential contour of the first rotating part 1 is matched with the inner wall contour of the fixed part 3, and on the other hand, the first rotating part 1 is conveniently assembled in the fixed part 3.
According to the wind driven generator of the embodiment of the invention, the first rotating part 1 and the second rotating part 2 which coaxially rotate are arranged, wherein the first rotating part 1 is connected with the first fan blade, the second rotating part 2 is connected with the second fan blade, the first rotating part 1 can be inserted into the fixed part 3 together with the inner rotor 11 so that the inner stator 32 and the inner rotor 11 are oppositely arranged, the second rotating part 2 can be sleeved on the outer periphery side of the fixed part 3 together with the outer rotor 21 so that the outer rotor 21 and the outer stator 33 are oppositely arranged, the outer diameter of the first rotating part 1 is gradually increased along the direction from the second end to the first end, and the outer diameter of the fixed part 3 is gradually increased along the direction from the second end to the first end, so that the first rotating part 1 can be conveniently inserted into the inner side of the fixed part 3, and the second rotating part 2 is sleeved on the outer side of the fixed part 3, so that the wind driven generator of the embodiment of the invention is convenient to assemble and disassemble.
In addition, the first rotating part 1 is provided with an inner rotor 11, the second rotating part 2 is provided with an outer rotor 21, the fixed part 3 is provided with an inner stator 32 which is arranged opposite to the inner rotor 11, the fixed part 3 is also provided with an outer stator 33 which is arranged corresponding to the outer rotor 21, and an inner-outer coaxial generator is formed.
In some embodiments, the second rotating part 2 and the fixing part 3 are of a cylindrical structure, and the inner diameter of the second rotating part 2 gradually increases in a direction from the second end to the first end so as to facilitate the insertion of a part of the fixing part 3 into the second rotating part 2, and the inner diameter of the fixing part 3 gradually increases in a direction from the second end to the first end so as to facilitate the insertion of a part of the first rotating part 1 into the fixing part 3.
Specifically, the inner diameter of the inner wall of the fixed portion 3 gradually increases in the direction from the rear to the front, that is, the size of the opening at the front end of the inner cavity of the fixed portion 3 is larger, so that the first rotating portion 1 is inserted into the fixed portion 3 from the opening at the front end of the fixed portion 3, and the inner diameter of the inner wall of the second rotating portion 2 gradually increases from the rear to the front, that is, the size of the opening at the front end of the inner cavity of the second rotating portion 2 is larger, so that the second rotating portion 2 is sleeved on the outer peripheral side of the fixed portion 3 from the rear to the front.
Therefore, the wind driven generator is convenient to disassemble and assemble, and has the advantage of convenient maintenance.
In some embodiments, a magnetic shielding sleeve is provided on the fixing portion 3, and the magnetic shielding sleeve extends along the length direction of the fixing portion 3 to isolate the magnetic field inside the fixing portion 3 and outside the fixing portion 3.
Specifically, winding groups are respectively arranged in the inner stator 32 and the outer stator 33, and the inner rotor 11 and the outer rotor 21 are both made of permanent magnetic materials, when the wind driven generator of the embodiment of the invention works, the inner rotor 11 rotates relative to the inner stator 32, so that the winding groups in the inner stator 32 cut the magnetic induction wires of the inner rotor 11 to generate current, and the outer rotor 21 rotates relative to the outer stator 33, so that the winding groups in the outer stator 33 cut the magnetic induction wires of the outer rotor 21 to generate current.
By arranging the magnetism isolating sleeve in the fixing portion 3, the magnetism isolating sleeve is located between the outer stator 33 and the inner stator 32 in the front-rear direction, the magnetic field generated by the outer rotor 21 and the magnetic field generated by the inner rotor 11 are completely isolated, so that the magnetic fields generated by the inner rotor 11 and the outer rotor 21 are prevented from being influenced by each other, the inner stator 32 only cuts the magnetic induction line of the inner rotor 11, and the outer stator 33 only cuts the magnetic induction line of the outer rotor 21, so that electric decoupling between the inner rotor 11, the inner stator 32 and the outer rotor 21 and the outer stator 33 is realized, and the power generation efficiency of the wind driven generator is improved.
In some embodiments, the fixing portion 3 includes a cylindrical portion 31 and an annular baffle 35, the annular baffle 35 is disposed at the first end, the cylindrical portion 31 extends along the length direction of the fixing portion 3, the magnetism isolating sleeve is disposed between the inner stator 32 and the outer stator 33, and the magnetism isolating sleeve is disposed between the inner wall of the cylindrical portion 31 and the outer wall of the cylindrical portion 31.
Specifically, the annular baffle 35 is provided at the front end of the fixed portion 3, and the thickness direction of the annular baffle 35 is the front-rear direction, the annular baffle 35 is extended in a closed manner around the outer peripheral side of the rotary shaft 12, the cylindrical portion 31 is provided at the rear end of the annular baffle 35, and the cylindrical portion 31 is extended in the front-rear direction, the front end of the cylindrical portion 31 is connected to the annular baffle 35, and the inner diameter of the front end of the cylindrical portion 31 is larger than the inner diameter of the annular baffle 35, and the outer diameter of the front end of the cylindrical portion 31 is smaller than the outer diameter of the annular baffle 35, so that the inner rotor 11 and the inner stator 32 are located entirely inside the cylindrical portion 31 and at the rear side of the annular baffle 35, and the outer rotor 21 and the outer stator 33 are located entirely at the outer peripheral side of the cylindrical portion 31 and at the rear side of the annular baffle 35.
The cylindrical portion 31 is of a hollow structure, an annular groove 311 extending in the front-rear direction is provided in the cylindrical portion 31, the annular groove 311 is provided between the inner wall of the cylindrical portion 31 and the outer wall of the cylindrical portion 31, and the annular groove 311 extends in a closed manner in the circumferential direction of the cylindrical portion 31 so that the magnetism insulator sleeve can be fitted into the annular groove 311.
Thus, the inner stator 32 is mounted on the inner wall of the cylindrical portion 31, the outer stator 33 is mounted on the outer wall of the cylindrical portion 31, so that the inner stator 32 and the outer stator 33 are both disposed on the frame, the inner stator 32 is connected with the magnetism isolating sleeve through the inner wall of the cylindrical portion 31, and the outer stator 33 is connected with the magnetism isolating sleeve through the outer wall of the cylindrical portion 31.
In some embodiments, a cooling flow passage (not shown) is provided in the magnetism isolating sleeve, and the cooling flow passage is bent and extended in the magnetism isolating sleeve to be suitable for the cooling medium to flow in the magnetism isolating sleeve.
Specifically, in the operation process of the power generation device according to the embodiment of the present invention, a magnetism isolating sleeve is provided between the outer stator 33 and the inner stator 32 to isolate the magnetic fields of the first component and the second component, the winding group in the outer stator 33 cuts the magnetism induction line of the outer rotor 21 to generate current, the current generates heat in the winding group of the outer stator 33 through the current thermal effect, the winding group in the inner stator 32 cuts the magnetism induction line of the inner rotor 11 to generate current, and the current generates heat in the winding group of the inner stator 32 through the current thermal effect.
Thereby, the inner stator 32 and the outer stator 33 can send out heat generated in the inner stator 32 and the outer stator 33 through the cooling medium flowing in the inner cooling flow passage of the magnetism isolating jacket, so as to avoid malfunction caused by heat accumulation in the inner stator 32 and the outer stator 33.
In some embodiments, the fixing portion 3 includes a reduced diameter section 34, and a part of the second rotating portion 2 is rotatably mounted on an outer peripheral side of the reduced diameter section 34 through a bearing, the reduced diameter section 34 is disposed at the second end, and an outer diameter of the reduced diameter section 34 is gradually reduced in a direction from the first end to the second end, so that the fixing portion 3 is inserted into the second rotating portion 2.
Specifically, the diameter-reduced section 34 is located at the rear end of the fixing portion 3, the inner rotor 11, the inner stator 32, the outer rotor 21 and the outer stator 33 are completely located at the front side of the diameter-reduced section 34, the diameter of the diameter-reduced section 34 is smaller than that of the sleeve portion 23, so that the structural rigidity of the diameter-reduced section 34 is higher, and the connection position of the second rotating portion 2 and the fixing portion 3 is arranged at the diameter-reduced section 34, so that the supporting rigidity of the second rotating portion 2 can be improved, and the outer rotor 21 has better coaxiality with the outer stator 33 when rotating relative to the outer stator 33.
In some embodiments, the second rotating portion 2 includes a sleeve portion 23, a first annular flange 24 and a second annular flange 25, the outer rotor 21 is provided to the sleeve portion 23, the first annular flange 24 and the second annular flange 25 are provided to a side of the sleeve portion 23 near the second end, the first annular flange 24 and the second annular flange 25 are fitted to an outer peripheral side of the reduced diameter section 34, and the first annular flange 24 and the second annular flange 25 have a set interval in a length direction of the fixed portion 3 to support the sleeve portion 23.
Specifically, the rear end of the second rotating portion 2 is provided with a first annular flange 24 and a second annular flange 25, the first annular flange 24 is provided on the front side of the second annular flange 25, and the first annular flange 24 and the second annular flange 25 are both extended along the outer peripheral side of the fixed portion 3 in a closed manner, the inner edge of the first annular flange 24 and the outer wall of the reduced diameter section 34 are rotatably connected by a bearing, and the inner edge of the second annular flange 25 and the outer wall of the reduced diameter section 34 are rotatably connected by a bearing, so that the second rotating portion 2 is rotatably fitted to the fixed portion 3.
Thereby, by providing the first annular flange 24 and the second annular flange 25, the inner edge of the first annular flange 24 and the inner edge of the second annular flange 25 serve as two support points to increase the support rigidity of the second rotating portion 2 during the process of assembling the second rotating portion 2 to the outer peripheral side of the fixed portion 3, thereby further improving the coaxiality of the outer rotor 21 when rotating with respect to the outer stator 33.
In some embodiments, the first rotating portion 1 includes a rotating shaft 12, the inner rotor 11 is sleeved on an outer peripheral side of a portion of the rotating shaft 12, the rotating shaft 12 includes an extension section 121, and the extension section 121 is disposed on a side of the first end facing away from the second end, so as to be suitable for connecting the first rotating portion 1 with the first wind wheel.
The second rotating portion 2 includes a flange 22, where the flange 22 is disposed on a side of the second end facing away from the first end, and the flange 22 is connected to the sleeve portion 23, so as to be suitable for connecting the second rotating portion 2 to the second wind wheel.
Specifically, the power generation device according to the embodiment of the present invention further includes a first wind wheel (not shown in the figure) and a second wind wheel (not shown in the figure) that are coaxially arranged, the front end of the rotating shaft 12 extends out of the fixing portion 3 to allow the first wind wheel to be connected with the rotating shaft 12, the inner rotor 11 of the first rotating portion 1 is driven to rotate by the rotating shaft 12, the flange 22 is disposed at the rear side of the fixing portion 3 to allow the second wind wheel to be connected with the flange 22, and the outer rotor 21 of the second rotating portion 2 is driven to rotate by the flange 22, and since the inner rotor 11 and the outer rotor 21 can rotate relatively, the rotating shaft 12 and the flange 22 can rotate coaxially and independently, and thus the first wind wheel and the second wind wheel can rotate coaxially and relatively and independently.
Therefore, the mechanical decoupling of the first wind wheel and the second wind wheel is realized through the inner rotor 11 and the outer rotor 21 which coaxially and independently rotate, so that the independent control of the front wind wheel rotating speed and the rear wind wheel rotating speed of the double wind wheel fan is realized, and the total wind energy utilization rate of the wind driven generator is conveniently improved.
In some embodiments, the fixing portion 3 is provided with a third annular flange 36 on the inner side, the fixing portion 3 comprises a first bearing 37, the first bearing 37 is provided on the inner edge of the third annular flange 36, the rotating shaft 12 is provided with a second bearing 13, and the second bearing 13 is adapted to be connected between the rotating shaft 12 and the inner edge of the annular baffle 35. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1.一种风力发电机，其特征在于，包括：1. A wind turbine, comprising: 第一转动部、第二转动部和固定部，所述第一转动部可转动地装配于所述固定部内，所述第二转动部可转动地套设于所述固定部的外侧，且所述第一转动部和所述第二转动部可共轴独立转动；A first rotating part, a second rotating part and a fixed part, wherein the first rotating part is rotatably assembled in the fixed part, the second rotating part is rotatably sleeved on the outer side of the fixed part, and the first rotating part and the second rotating part can rotate independently on the same axis; 所述第一转动部上设有内转子，所述第二转动部上设有外转子，所述固定部上设有内定子和外定子，所述内定子与所述内转子相对布置，所述外定子与所述外转子相对布置；The first rotating part is provided with an inner rotor, the second rotating part is provided with an outer rotor, the fixed part is provided with an inner stator and an outer stator, the inner stator is arranged opposite to the inner rotor, and the outer stator is arranged opposite to the outer rotor; 所述固定部具有第一端和第二端，所述第一转动部的外径沿从第二端到第一端的方向逐渐增大以便于将部分所述第一转动部从第一端插装至所述固定部，所述固定部的外径沿从第二端到第一端的方向逐渐增大以便于将部分所述固定部插装至所述第二转动部内。The fixed part has a first end and a second end, and the outer diameter of the first rotating part gradually increases along the direction from the second end to the first end so as to facilitate the insertion of part of the first rotating part from the first end to the fixed part, and the outer diameter of the fixed part gradually increases along the direction from the second end to the first end so as to facilitate the insertion of part of the fixed part into the second rotating part. 2.根据权利要求1所述的风力发电机，其特征在于，所述第二转动部和所述固定部为筒状结构，所述第二转动部的内径沿从第二端到第一端的方向逐渐增大以便于将部分所述固定部插装至所述第二转动部内，所述固定部的的内径沿从第二端到第一端的方向逐渐增大以便于将部分所述第一转动部插装至所述固定部。2. The wind turbine according to claim 1 is characterized in that the second rotating part and the fixed part are cylindrical structures, the inner diameter of the second rotating part gradually increases along the direction from the second end to the first end to facilitate the insertion of part of the fixed part into the second rotating part, and the inner diameter of the fixed part gradually increases along the direction from the second end to the first end to facilitate the insertion of part of the first rotating part into the fixed part. 3.根据权利要求2所述的风力发电机，其特征在于，所述固定部上设有隔磁套，所述隔磁套沿所述固定部的长度方向延伸，以隔绝所述固定部内侧和所述固定部外侧的磁场。3. The wind turbine according to claim 2, characterized in that a magnetic isolation sleeve is provided on the fixing part, and the magnetic isolation sleeve extends along the length direction of the fixing part to isolate the magnetic field inside and outside the fixing part. 4.根据权利要求3所述的风力发电机，其特征在于，所述固定部包括筒状部和环形挡板，所述环形挡板设于所述第一端，所述筒状部沿所述固定部的长度方向延伸，所述隔磁套设于所述内定子和所述外定子之间，且所述隔磁套设于所述筒状部的内壁和所述筒状部的外壁之间。4. The wind turbine according to claim 3 is characterized in that the fixed part includes a cylindrical part and an annular baffle, the annular baffle is arranged at the first end, the cylindrical part extends along the length direction of the fixed part, the magnetic isolation sleeve is arranged between the inner stator and the outer stator, and the magnetic isolation sleeve is arranged between the inner wall of the cylindrical part and the outer wall of the cylindrical part. 5.根据权利要求3所述的风力发电机，其特征在于，所述隔磁套内设有冷却流道，所述冷却流道在所述隔磁套内弯折延伸以适于供冷却介质在所述隔磁套内流动。5. The wind turbine according to claim 3, characterized in that a cooling channel is provided in the magnetic isolation sleeve, and the cooling channel is bent and extended in the magnetic isolation sleeve to be suitable for allowing cooling medium to flow in the magnetic isolation sleeve. 6.根据权利要求2所述的风力发电机，其特征在于，所述固定部包括缩径段，部分所述第二转动部通过轴承可转动地装配在所述缩径段的外周侧，所述缩径段设于所述第二端，所述缩径段的外径沿从第一端到第二端的方向逐渐减小，以便于所述固定部插装于所述第二转动部内。6. The wind turbine according to claim 2 is characterized in that the fixed part includes a reduced diameter section, a portion of the second rotating part is rotatably assembled on the outer peripheral side of the reduced diameter section through a bearing, the reduced diameter section is arranged at the second end, and the outer diameter of the reduced diameter section gradually decreases along the direction from the first end to the second end, so as to facilitate the insertion of the fixed part into the second rotating part. 7.根据权利要求6所述的风力发电机，其特征在于，所述第二转动部包括套筒部、第一环形凸缘和第二环形凸缘，所述外转子设于所述套筒部，所述第一环形凸缘和所述第二环形凸缘设于所述套筒部靠近所述第二端的一侧，所述第一环形凸缘和所述第二环形凸缘装配于所述缩径段的外周侧，且所述第一环形凸缘和所述第二环形凸缘沿所述固定部的长度方向上具有设定间隔以支撑所述套筒部。7. The wind turbine according to claim 6 is characterized in that the second rotating part includes a sleeve part, a first annular flange and a second annular flange, the outer rotor is arranged on the sleeve part, the first annular flange and the second annular flange are arranged on a side of the sleeve part close to the second end, the first annular flange and the second annular flange are assembled on the outer peripheral side of the reduced diameter section, and the first annular flange and the second annular flange have a set interval along the length direction of the fixing part to support the sleeve part. 8.根据权利要求7所述的风力发电机，其特征在于，所述第一转动部包括转轴，所述内转子套设于部分所述转轴的外周侧，所述转轴包括外延段，所述外延段设于所述第一端背离所述第二端的一侧以适于供所述第一转动部与第一风轮相连。8. The wind turbine according to claim 7 is characterized in that the first rotating part includes a rotating shaft, the inner rotor is sleeved on the outer circumference of a portion of the rotating shaft, the rotating shaft includes an extension section, and the extension section is arranged on a side of the first end away from the second end so as to be suitable for connecting the first rotating part to the first wind wheel. 9.根据权利要求8所述的风力发电机，其特征在于，所述第二转动部包括法兰盘，所述法兰盘设于所述第二端背离所述第一端的一侧，且所述法兰盘与所述套筒部相连，以适于供所述第二转动部与第二风轮相连。9. The wind turbine according to claim 8, characterized in that the second rotating part comprises a flange, the flange is arranged on a side of the second end away from the first end, and the flange is connected to the sleeve part so as to be suitable for connecting the second rotating part to the second wind wheel. 10.根据权利要求8所述的风力发电机，其特征在于，所述固定部的内侧设有第三环形凸缘，所述固定部包括第一轴承，所述第一轴承设于所述第三环形凸缘的内缘，所述转轴上设有第二轴承，所述第二轴承适于连接在所述转轴和所述环形挡板的内缘之间。10. The wind turbine according to claim 8 is characterized in that a third annular flange is provided on the inner side of the fixing portion, the fixing portion comprises a first bearing, the first bearing is provided on the inner edge of the third annular flange, a second bearing is provided on the rotating shaft, and the second bearing is suitable for being connected between the rotating shaft and the inner edge of the annular baffle.
CN202311824262.5A 2023-12-27 2023-12-27 Wind turbine Active CN117977877B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1719029A (en) * 2005-07-14 2006-01-11 潍坊中云机器有限公司 Split type internal stator wind driven electric generator
CN203219149U (en) * 2013-05-08 2013-09-25 上海中科深江电动车辆有限公司 Dual Rotor Motors for Electric Vehicles
RU2658316C1 (en) * 2017-07-07 2018-06-20 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") Multiphase ac wind generator
CN108365718A (en) * 2018-02-09 2018-08-03 齐鲁工业大学 A kind of birotor permanent magnetic doubly-fed wind turbine and electricity generation system
CN112324623A (en) * 2020-11-30 2021-02-05 中国华能集团清洁能源技术研究院有限公司 Direct-drive contra-rotating double-wind-wheel wind turbine generator set

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1719029A (en) * 2005-07-14 2006-01-11 潍坊中云机器有限公司 Split type internal stator wind driven electric generator
CN203219149U (en) * 2013-05-08 2013-09-25 上海中科深江电动车辆有限公司 Dual Rotor Motors for Electric Vehicles
RU2658316C1 (en) * 2017-07-07 2018-06-20 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") Multiphase ac wind generator
CN108365718A (en) * 2018-02-09 2018-08-03 齐鲁工业大学 A kind of birotor permanent magnetic doubly-fed wind turbine and electricity generation system
CN112324623A (en) * 2020-11-30 2021-02-05 中国华能集团清洁能源技术研究院有限公司 Direct-drive contra-rotating double-wind-wheel wind turbine generator set

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