CN114658610A - Transmission system and wind generating set - Google Patents

Transmission system and wind generating set Download PDF

Info

Publication number
CN114658610A
CN114658610A CN202011536441.5A CN202011536441A CN114658610A CN 114658610 A CN114658610 A CN 114658610A CN 202011536441 A CN202011536441 A CN 202011536441A CN 114658610 A CN114658610 A CN 114658610A
Authority
CN
China
Prior art keywords
moving shaft
transmission system
loading
bearing
shaft
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.)
Pending
Application number
CN202011536441.5A
Other languages
Chinese (zh)
Inventor
李会勋
马加伟
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.)
Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Original Assignee
Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
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 Beijing Goldwind Science and Creation Windpower Equipment Co Ltd filed Critical Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority to CN202011536441.5A priority Critical patent/CN114658610A/en
Priority to PCT/CN2021/102881 priority patent/WO2022134519A1/en
Publication of CN114658610A publication Critical patent/CN114658610A/en
Pending legal-status Critical Current

Links

Images

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
    • F03D15/00—Transmission of mechanical power
    • 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 
    • 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
    • F03D15/00—Transmission of mechanical power
    • F03D15/20—Gearless transmission, i.e. direct-drive
    • 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
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70—Bearing or lubricating arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (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

The invention relates to a transmission system and a wind generating set, wherein the transmission system comprises: the shafting structure comprises a moving shaft, a fixed shaft and a bearing set, wherein the moving shaft and the fixed shaft are coaxially arranged and are rotationally connected through the bearing set; the loading structure is arranged at one end of the movable shaft in the axial direction of the movable shaft and is in rotating connection with the movable shaft, the loading structure is used for applying acting force to the movable shaft, and the applying direction of the acting force is intersected with the axial direction. According to the transmission system and the wind generating set provided by the embodiment of the invention, the transmission system can transmit kinetic energy, so that the power generation requirement of the wind generating set is ensured, meanwhile, the damage to a bearing set of the transmission system can be reduced, and the service life of the whole transmission system is prolonged.

Description

Transmission system and wind generating set
Technical Field
The invention relates to the technical field of wind power, in particular to a transmission system and a wind generating set.
Background
The wind generating set can convert wind energy in nature into electric energy which can be utilized, and the application is very wide. The wind generating set mainly comprises a direct-drive wind generating set and a double-fed wind generating set, the direct-drive wind generating set is not provided with a gear box, transmission loss is reduced, generating efficiency is improved, and the effect is more remarkable particularly in a low wind speed environment. In addition, the direct-drive wind generating set omits a gear box and accessories thereof, simplifies a transmission structure, improves the overall reliability of the wind generating set, and can effectively reduce the maintenance cost, so the direct-drive wind generating set is widely applied in the field of wind power.
However, in the existing direct-drive wind generating set, the impeller and the base of the nacelle are directly connected through the transmission system, and since the impeller has a large weight and a load applied by wind energy, the weight and the applied load will act on the bearing set inside the transmission system, which is detrimental to the load applied to each bearing of the bearing set, especially the bearing on the side close to the impeller, and affects the service life of the whole transmission system.
Therefore, the embodiment of the invention provides a transmission system and a wind generating set.
Disclosure of Invention
The embodiment of the invention provides a transmission system and a wind generating set, wherein the transmission system can meet kinetic energy transmission, guarantee the power generation requirement of the wind generating set, simultaneously reduce the damage to a bearing set of the transmission system, and prolong the service life of the whole transmission system.
In one aspect, a transmission system is provided according to an embodiment of the present invention, including: the shafting structure comprises a moving shaft, a fixed shaft and a bearing set, wherein the moving shaft and the fixed shaft are coaxially arranged and are rotationally connected through the bearing set; the loading structure is arranged at one end of the movable shaft in the axial direction of the movable shaft and is in rotating connection with the movable shaft, the loading structure is used for applying acting force to the movable shaft, and the applying direction of the acting force is intersected with the axial direction.
According to one aspect of the embodiment of the invention, the force applied to the moving shaft by the loading structure is adjustable.
According to an aspect of an embodiment of the present invention, the loading structure includes an adaptor connected to the moving shaft and having a connecting portion capable of rotating with an axis of the moving shaft as a center line, and a loading member connected to the connecting portion and providing a force.
According to one aspect of the embodiment of the invention, the adapter comprises an adapter inner ring and an adapter outer ring which are in running fit, the adapter inner ring is connected with the moving shaft, and the adapter outer ring forms a connecting part and is hinged with the loading piece.
According to an aspect of the embodiment of the present invention, the adapter further includes an extension portion extending a predetermined length in the axial direction, the adapter inner ring is disposed on a side of the extension portion facing away from the moving shaft, and the adapter inner ring is connected to the moving shaft through the extension portion.
According to an aspect of an embodiment of the present invention, the loading member includes a telescopic cylinder, one of a cylinder body and a cylinder rod of the telescopic cylinder is connected to the adaptor, the other of the cylinder body and the cylinder rod is used for connection to the external member, and the first driver is configured to adjust an expansion amount of the telescopic cylinder.
According to an aspect of an embodiment of the present invention, the loader includes a loading container having a containing chamber, and a second driver configured to adjust a volume of liquid contained in the containing chamber.
According to one aspect of the embodiment of the invention, the bearing set comprises a first bearing and a second bearing, and the first bearing and the second bearing are distributed at intervals in the axial direction.
In another aspect, a wind turbine generator system according to an embodiment of the present invention includes: a nacelle comprising a base; in the transmission system, the fixed shaft is connected to the base, and the loading structure is at least arranged on the base; the generator comprises a rotor and a stator, wherein the rotor is connected with the moving shaft, and the stator is connected with the fixed shaft; and the impeller is connected to one end of the moving shaft, which is far away from the loading structure.
According to another aspect of the embodiment of the invention, the wind generating set further comprises a detector and a controller, the detector is configured to detect load information borne by the impeller, and the controller is configured to control the loading structure to apply the force with the preset value to the moving shaft according to the load information.
According to another aspect of an embodiment of the invention, the loading structure is at least partially hinged to the base.
According to the transmission system and the wind generating set provided by the embodiment of the invention, the transmission system comprises the shafting structure and the loading structure, the shafting structure can be connected with the rotor and the stator of the generator, and the impeller can be connected with the base of the cabin, so that the power generation requirement is ensured. And the correspondingly arranged loading structure can apply acting force on the moving shaft in the direction which is axially crossed with the moving shaft, so that the weight and the borne load of the impeller are balanced, the damage to the bearing set in the shaft system structure is reduced, and the service life of the bearing set and the whole transmission system is prolonged.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of a wind power plant according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of a wind turbine generator set according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a transmission system in accordance with one embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a transmission system according to another embodiment of the present invention;
fig. 5 is a control flow chart of a wind turbine generator system according to an embodiment of the present invention.
1-a transmission system; 10-shafting structure; 11-a moving shaft; 12-fixed shaft; 13-bearing set; 131-a first bearing; 132-a second bearing; 20-a loading structure; 21-an adaptor; 211-a slew bearing; 211 a-switching inner ring; 211 b-adapting outer ring; 212-an extension; 22-a loading member; 221-telescoping cylinder; 222-a first driver; 223-loading the container; 224-a second driver; 224 a-driving the pump; 224 b-spare container;
2-a cabin; 201-a base; 202-a support frame; 3, a generator; 301-a rotor; 302-a stator; 4-an impeller; 401-a hub; 402-a blade; 5-a tower; 6-a detector; 7-a controller.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following description is given with the directional terms shown in the drawings and is not intended to limit the drive train and the specific structure of the wind turbine generator system of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For a better understanding of the invention, a drive train 1 and a wind turbine generator set according to an embodiment of the invention will be described in detail below with reference to fig. 1 to 5.
Referring to fig. 1 and fig. 2, an embodiment of the invention provides a wind turbine generator system, which includes a tower 5, a nacelle 2, a generator 3, a shaft structure 10, and an impeller 4. The tower 5 is connected to a wind turbine foundation, the nacelle 2 is disposed on the top end of the tower 5, the nacelle 2 includes a base 201, and the nacelle 2 can be connected to the tower 5 and the shafting structure 10 through the base 201. The generator 3 is provided to the nacelle 2, and in some examples, the generator 3 may be located outside the nacelle 2. The impeller 4 includes a hub 401 and a plurality of blades 402 connected to the hub 401. The generator 3 comprises a rotor 301 and a stator 302 which are in running fit, the rotor 301 can be connected to the hub 401 via a shafting structure 10, and the stator 302 can be connected to the base 201 of the nacelle 2 via the shafting structure 10. When wind power acts on the blades 402, the blades 402 drive the hub 401 to rotate, and the hub 401 drives the rotor 301 of the generator 3 to rotate relative to the stator 302 through the shafting structure 10, so that the power generation requirement of the wind generating set is met.
The wind generating set provided by the embodiment of the invention can be a direct-drive wind generating set, the impeller 4 and the engine room 2 of the existing direct-drive wind generating set are directly connected through the transmission system 1, and the impeller 4 has a large weight and a load acted by wind energy, and the weight and the borne load act on the bearing set 13 in the transmission system 1, so that each bearing of the bearing set 13, particularly the bearing close to one side of the impeller 4, is loaded disadvantageously, and the service life of the whole transmission system 1 is influenced.
Based on the above technical problem, the embodiment of the present invention provides a new transmission system, which can be produced and used as an independent component, and of course, can be used for the wind turbine generator system provided in the above embodiment and be a component of the wind turbine generator system.
As shown in fig. 2 and fig. 3, the transmission system 1 according to the embodiment of the present invention includes a shaft system structure 10 and a loading structure 20, where the shaft system structure 10 includes a moving shaft 11, a fixed shaft 12 and a bearing set 13, and the moving shaft 11 and the fixed shaft 12 are coaxially disposed and rotatably connected through the bearing set 13. The loading structure 20 is disposed at one end of the moving shaft 11 in the axial direction of the moving shaft 11 and is rotatably connected to the moving shaft 11, and the loading structure 20 is configured to apply a force to the moving shaft 11, where the direction of the applied force intersects with the axial direction.
When the transmission system 1 provided by the embodiment of the invention is used for a wind generating set, the moving shaft 11 can be connected with the rotor 301 and the hub 401 of the generator 3, and the fixed shaft 12 is connected with the stator 302 of the generator 3 and the base 201 of the nacelle 2, so that the moving shaft 11 can be driven to rotate relative to the fixed shaft 12 when the impeller 4 rotates under the action of wind energy, further, the relative rotation between the rotor 301 and the stator 302 is realized, and the conversion from the wind energy to the electric energy is realized. In addition, the shafting structure 10 provided by the embodiment of the invention further comprises the loading structure 20, and the loading structure 20 is used for applying an acting force which is intersected with the axial direction of the moving shaft 11 to the moving shaft 11 so as to balance the gravity and the load borne by the impeller 4, reduce or avoid the damage of the weight of the impeller 4 and the load borne by the impeller 4 to the bearing group 13 in the shafting structure 10, improve the service life of the bearing group 13 and the whole transmission system 1, and further ensure the power generation benefit of the wind generating set.
As an alternative implementation, the shafting structure 10 provided by the embodiment of the present invention may have the moving shaft 11 located inside the fixed shaft 12 and disposed coaxially with the fixed shaft 12. Optionally, the bearing set 13 includes a first bearing 131 and a second bearing 132, the first bearing 131 and the second bearing 132 are spaced apart in the axial direction of the fixed shaft 12, the first bearing 131 and the second bearing 132 are both sleeved on the outer circumferential surface of the movable shaft 11 and located between the movable shaft 11 and the fixed shaft 12, and the movable shaft 11 and the fixed shaft 12 are rotatably connected to each other through the first bearing 131 and the second bearing 132. Alternatively, the first bearing 131 may be located on a side away from the loading structure 20 and the second bearing 132 may be located on a side close to the loading structure 20, i.e. when used in a wind turbine generator set, the first bearing 131 is located closer to the impeller 4.
In some optional embodiments, the shafting structure 10 provided in the embodiments of the present invention, the force applied by the loading structure 20 to the moving shaft 11 is adjustable. By making the acting force applied to the moving shaft 11 by the loading structure 20 adjustable, the acting force applied to the moving shaft 11 can be selected to be a proper force according to the weight of the impeller 4 and different loads to be borne, and the weight of the impeller 4 and the borne loads can be reasonably balanced.
As an optional implementation manner, in the shafting structure 10 provided in the embodiment of the present invention, the acting force applied by the loading structure 20 to the moving shaft 11 may be a pushing force, or may also be a pulling force, which may be specifically determined according to the position of the loading structure 20.
In some optional embodiments, the loading structure 20 includes an adaptor 21 and a loading member 22, the adaptor 21 is connected with the moving shaft 11 and has a connecting portion capable of rotating with the axis of the moving shaft 11 as a center line, and the loading member 22 is connected with the connecting portion and provides a force. Because the shaft system structure 10 is used in a wind turbine generator system, the moving shaft 11 rotates along with the impeller 4, the loading structure 20 includes the adapter 21 and is provided with the connecting part capable of rotating with the axis of the moving shaft 11 as the central line, so that when the loading part 22 applies action to the moving shaft 11, the moving shaft 11 can normally rotate, the operation of the moving shaft 11 is not affected, and the transmission requirement of the moving shaft 11 on the kinetic energy of the impeller 4 is ensured.
As an alternative implementation manner, in the shafting structure 10 provided in the embodiment of the present invention, the adaptor 21 may include an adaptor inner ring 211a and an adaptor outer ring 211b that are rotationally matched, the adaptor inner ring 211a is connected to the moving shaft 11, and the adaptor outer ring 211b forms a connection portion and is hinged to the loading element 22. The adapter 21 adopts the above form, and the structure is simple and can meet the loading requirement of the loading piece 22 on the acting force of the moving shaft 11. Moreover, the loading member 22 and the switching outer ring 211b are hinged to each other, so that the loading direction of the loading member 22 can be adjusted, the direction of the force applied by the loading member can be perpendicular to the axis of the shafting structure 10, and the force application effect of the loading member 22 is optimized.
In some alternative embodiments, a protrusion may be provided on the adapting outer ring 211b, and a hinge hole may be provided on the protrusion, so that the loading member 22 may be hinged with the protrusion by a pin.
In some optional embodiments, the adapter 21 may include an adapter bearing 211 coaxially disposed with the first bearing 131 and the second bearing 132, and the adapter bearing 211 includes the above mentioned adapter inner ring 211a and adapter outer ring 211b, which satisfies the connection relationship between the moving shaft 11 and the loading member 2, and is easy to purchase and convenient for maintenance and replacement.
As an optional implementation manner, in the shaft system structure 10 provided in the embodiment of the present invention, the adaptor 21 further includes an extension portion 212 extending a predetermined length along the axial direction of the moving shaft 11, the adaptor inner ring 211a is disposed on a side of the extension portion 212 facing away from the moving shaft 11, and the adaptor inner ring 211a is connected to the moving shaft 11 through the extension portion 212, and by providing the extension portion 212, the shaft system structure 10 provided in the embodiment of the present invention can extend the force arm of the loading member 22 acting on the first bearing 131 and the second bearing 132 of the bearing set 13, so as to optimize the loading effect of the loading member 22.
In some alternative embodiments, the extension 212 may be a cylindrical structure having a predetermined length, and the extension 212 and the moving shaft 11 are coaxially disposed with each other. One end of the extension portion 212 is butted with the moving shaft 11, and the end far away from the moving shaft 11 can be in a cantilever arrangement and used for installing the adapter bearing 211.
In some alternative embodiments, the adapter inner ring 211a and the extension portion 212 may adopt an integrated structure, which can ensure the connection strength between the adapter 21 and the extension portion 212 and reliably ensure the coaxiality between the adapter and the moving shaft 11.
As an alternative embodiment, the loading structure 20 and the shaft system structure 10 are detachably connected to each other. Facilitating maintenance and replacement of the loading structure 20. Alternatively, the extension portion 212 of the loading structure 20 may be detachably connected to the moving shaft 11 by a fastener.
In some optional embodiments, the loader 22 comprises a telescopic cylinder 221 and a first driver 222, one of a cylinder body and a cylinder rod of the telescopic cylinder 221 is connected with the adaptor 21, the other of the cylinder body and the cylinder rod is used for connecting with an external member, and the first driver 222 is configured to adjust the telescopic amount of the telescopic cylinder 221. The loading member 22 is in the form of a telescopic cylinder 221, is easy to control, and can meet the force requirements for providing the shafting structure 10.
In some alternative embodiments, the cylinder rod of the telescopic cylinder 221 may be connected to the adaptor 21, optionally hinged to each other, and the cylinder body of the telescopic cylinder 221 may be connected to an external component outside the transmission system 1, for example, may be connected to the base 201 of the nacelle 2.
As an alternative embodiment, the first actuator 222 includes a hydraulic station, the hydraulic station is connected to the telescopic cylinder 221 through a pipeline, and the hydraulic station is used to control the oil ratio of the telescopic cylinder 221 in the rod chamber and the rod-less chamber to adjust the telescopic amount of the telescopic cylinder 221, and thus the acting force applied to the moving shaft 11.
It will be appreciated that the use of the loading member 22 in the form of the telescopic cylinder 221 and the first actuator 222 is only an alternative embodiment. As shown in fig. 4, in some embodiments, the loading member 22 may also include a loading container 223 and a second driver 224, the loading container 223 having a containing cavity, the second driver 224 being configured to adjust the volume of the liquid contained in the containing cavity. Adjusting the volume of liquid in the holding chamber by the second actuator 224 also enables adjustment of the force provided by the loading member 22 to the moving shaft 11. the second actuator 224 may include, for example, to meet load adjustment requirements.
Optionally, the loading container 223 may be hinged to the adaptor 21 in the same manner as the above embodiments, and the description thereof is not repeated here.
As an alternative embodiment, the second driver 224 may include a driving pump 224a and a spare container 224b, the spare container 224b is used for containing liquid, and the driving pump 224a is used to adjust the proportion of the liquid in the loading container 223 and the spare container 224b so as to adjust the volume of the liquid in the loading container 223 and further satisfy the adjustment of the acting force exerted by the loading member 22.
When the transmission system 1 provided by the embodiment of the invention is used for a wind generating set, the whole loading structure 20 can be arranged inside the base 201 of the nacelle 2, at least part of the loading structure 20 can be connected to the base 201, the rotor 301 and the stator 302 of the generator 3 can be connected through the shafting structure 10, the impeller 4 can be connected with the base 201 of the nacelle 2, and the power generation requirement is ensured. Moreover, the correspondingly arranged loading structure 20 can apply an acting force to the moving shaft 11 in a direction intersecting the self axial direction of the moving shaft 11, balance the weight and the load of the impeller 4, reduce the damage to the bearing set 13 in the shafting structure 10, and prolong the service life of the bearing set 13 and the whole transmission system 1.
In some optional embodiments, the loading structure 20 may be hinged to the base 201 of the nacelle 2, and optionally, the loading member 22 may be hinged to the base 201 of the nacelle 2, so as to ensure that the loading direction of the loading member 22 can be adjusted to be perpendicular or close to perpendicular to the axis of the moving shaft 11, thereby optimizing the loading effect.
As shown in fig. 2 to fig. 4, as an optional implementation manner, the wind generating set provided in the implementation of the present invention may further include a supporting frame 202, the supporting frame 202 is disposed on the base 201 and connected to the base 201, and the loading structure 20 is indirectly connected to the base 201 through the supporting frame 202.
As an optional implementation manner, the wind turbine generator set according to the embodiment of the present invention further includes a detector 6 and a controller 7, the detector 6 is configured to detect load information borne by the impeller 4, and the controller 7 is configured to control the loading structure 20 to apply a predetermined value of force to the moving shaft 11 according to the load information. By arranging the detector 6 and the controller 7, the loading time of the loading structure 20 and the value of the applied acting force can be better controlled, and the service life of the bearing set 13 is prolonged.
As shown in fig. 5, as an alternative embodiment, the controller 7 may be further configured to control the loading device to provide an initial acting force to the moving shaft 11 according to the wind field test wind parameter, where the loading value of the initial acting force is Fc, and calculate and obtain the initial life of the first bearing 131 and the second bearing 132 when the loading value of the initial acting force is Fc.
Optionally, the controller 7 is configured to receive load information of the impeller 4 detected by the detector 6, the load information including a bending moment My in the Y direction (vertical direction), a bending moment My in the X direction (horizontal direction) and a bending moment in the Z direction (axial direction of the shafting structure 10) of the blade root, and obtains the bending moment My of the center of the hub 401 in the Y direction (vertical direction), the stress Fx and Fz in the X direction (horizontal direction) and the Z direction (axial direction of the shafting structure 10) according to the load information, the load F1r borne by the first bearing 131 and the load F2r borne by the second bearing 132 are obtained according to My, Fz and Fx in the center of the hub 401, the distance L1 between the supporting point of the first bearing 131 and the supporting point of the second bearing 132, the distance L2 between the supporting point of the first bearing 131 and the supporting point of the second bearing 132, the distance L3 between the second bearing 132 and the loading point applied by the loading structure 20 and the loading value Fc of the initial force.
Alternatively, the load F1r borne by the first bearing 131 may be obtained according to equation (1).
Figure BDA0002853196330000091
Alternatively, the load F2r borne by the second bearing 132 may be obtained according to equation (2).
Figure BDA0002853196330000092
Alternatively, the controller 7 is configured to obtain the actual life of the first bearing 131 at the initial loading value Fc of the first bearing 131 according to the load F1r borne by the first bearing 131, and if the actual life is smaller than the initial life, adjust the applied force of the loading structure 20 to the moving shaft 11 until the actual life of the first bearing 131 is within the preset threshold range.
Optionally, the controller 7 is further configured to obtain the actual life of the second bearing 132 when the loading value of the initial acting force is Fc of the second bearing 132 according to the load F2r borne by the second bearing 132, and if the actual life is smaller than the preset threshold, adjust the applied acting force of the loading structure 20 to the moving shaft 11 until the actual life of the second bearing 132 is within the preset threshold range.
Optionally, the controller 7 is configured to obtain the actual life of the first bearing 131 when the initial loading value is Fc of the first bearing 131 according to the load F1r borne by the first bearing 131 and the bearing life calculation formula L10. Optionally, the controller 7 is configured to obtain the actual life of the second bearing 132 when the initial loading value is Fc of the second bearing 132 according to the load F2r borne by the second bearing 132 and the bearing life calculation formula L10.
Alternatively, when adjusting the load of the loading structure 20, the value of the applied force may be increased or decreased according to a preset gradient, and the actual life of the corresponding bearing is compared with the preset life after each loading until the actual life thereof is not less than the preset life, and the loading adjustment is stopped.
Because the wind generating set provided by the embodiment of the invention comprises the transmission system 1 provided by each embodiment, the loading structure 20 can apply load to the moving shaft 11 to balance the weight of the impeller 4 borne by the moving shaft 11 and the wind load borne by the impeller 4, so that the service life of each bearing of the bearing set 13 is prolonged, and the safety performance and the power generation benefit of the wind generating set can be improved.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (11)

1. A transmission system (1), characterized by comprising:
the shafting structure (10) comprises a moving shaft (11), a fixed shaft (12) and a bearing set (13), wherein the moving shaft (11) and the fixed shaft (12) are coaxially arranged and are rotationally connected through the bearing set (13);
the loading structure (20) is arranged at one end of the moving shaft (11) in the axial direction of the moving shaft and is in rotating connection with the moving shaft (11), and the loading structure (20) is used for applying acting force to the moving shaft (11), and the applying direction of the acting force is intersected with the axial direction.
2. Transmission system (1) according to claim 1, characterized in that said force exerted by said loading structure (20) on said moving shaft (11) is adjustable.
3. The transmission system (1) according to claim 1, characterized in that said loading structure (20) comprises an adapter (21) and a loading member (22), said adapter (21) being connected with said moving shaft (11) and having a connection portion rotatable with the axis of said moving shaft (11) as the center line, said loading member (22) being connected with said connection portion and providing said force.
4. A transmission system (1) according to claim 3, wherein said adaptor (21) comprises a rotationally coupled adaptor inner ring (211a) and an adaptor outer ring (211b), said adaptor inner ring (211a) being connected to said moving shaft (11), said adaptor outer ring (211b) forming said connection and being mutually articulated to said load (22).
5. The transmission system (1) according to claim 4, wherein the adapter (21) further comprises an extension portion (212) extending a predetermined length in the axial direction, the adapter inner ring (211a) is disposed on a side of the extension portion (212) facing away from the moving shaft (11) and the adapter inner ring (211a) is connected to the moving shaft (11) through the extension portion (212).
6. The transmission system (1) according to claim 3, wherein the load member (22) comprises a telescopic cylinder (221) and a first actuator (222), one of a cylinder body and a cylinder rod of the telescopic cylinder (221) being connected with the adaptor (21), the other of the cylinder body and the cylinder rod being used for connection with an external member, the first actuator (222) being configured to adjust an amount of extension and retraction of the telescopic cylinder (221).
7. The transmission system (1) according to claim 3, wherein the loading member (22) comprises a loading container (223) and a second driver (224), the loading container (223) having a receiving cavity, the second driver (224) being configured to adjust a volume of liquid received in the receiving cavity.
8. The transmission system (1) according to claim 1, wherein the bearing set (13) comprises a first bearing (131) and a second bearing (132), the first bearing (131) and the second bearing (132) being spaced apart in the axial direction.
9. A wind turbine generator set, comprising:
a nacelle (2) comprising a bedplate (201);
the transmission system (1) according to any one of claims 1 to 8, wherein said dead axle (12) is connected to said base (201), said loading structure (20) being at least partially arranged to said base (201);
a generator (3) including a rotor (301) and a stator (302), the rotor (301) being connected to the moving shaft (11), the stator (302) being connected to the fixed shaft (12);
and the impeller (4) is connected to one end of the moving shaft (11) which is far away from the loading structure (20).
10. Wind park according to claim 9, further comprising a detector (6), the detector (6) being configured to detect load information to which the impeller (4) is subjected, and a controller (7), the controller (7) being configured to control the loading structure (20) to apply the force of a predetermined value to the moving shaft (11) in dependence on the load information.
11. Wind park according to claim 9, wherein the loading structure (20) is at least partially hinged with the base (201).
CN202011536441.5A 2020-12-23 2020-12-23 Transmission system and wind generating set Pending CN114658610A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202011536441.5A CN114658610A (en) 2020-12-23 2020-12-23 Transmission system and wind generating set
PCT/CN2021/102881 WO2022134519A1 (en) 2020-12-23 2021-06-28 Drive system and wind turbine generator unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011536441.5A CN114658610A (en) 2020-12-23 2020-12-23 Transmission system and wind generating set

Publications (1)

Publication Number Publication Date
CN114658610A true CN114658610A (en) 2022-06-24

Family

ID=82024432

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011536441.5A Pending CN114658610A (en) 2020-12-23 2020-12-23 Transmission system and wind generating set

Country Status (2)

Country Link
CN (1) CN114658610A (en)
WO (1) WO2022134519A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4357613A1 (en) * 2022-10-17 2024-04-24 General Electric Renovables España S.L. Drive train assemblies for wind turbines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7437264B2 (en) * 2006-06-19 2008-10-14 General Electric Company Methods and apparatus for balancing a rotor
EP2592266B1 (en) * 2010-08-06 2014-06-25 Alstom Renovables España, S.L. Direct drive wind turbine and method for controlling an air gap
US20110140441A1 (en) * 2010-08-11 2011-06-16 General Electric Company Gearbox support system
DE102011118137A1 (en) * 2011-11-10 2013-05-16 Robert Bosch Gmbh Shaft, particularly output shaft for gearbox of flow turbine, particularly marine current turbine or wind turbine, is positioned in fixed bearing
GB2514845B (en) * 2013-06-07 2019-11-13 Equinor Energy As Wind turbine control
EP3351791A1 (en) * 2017-01-23 2018-07-25 Siemens Aktiengesellschaft Stator support of a gearless wind generator
US10385830B2 (en) * 2017-07-14 2019-08-20 General Electric Company Compound main bearing arrangement for a wind turbine
CN110792565B (en) * 2019-10-17 2020-12-25 中广核(北京)新能源科技有限公司 Main shaft-free direct-drive generator for wind power generation

Also Published As

Publication number Publication date
WO2022134519A1 (en) 2022-06-30

Similar Documents

Publication Publication Date Title
US7528497B2 (en) Wind-turbine with load-carrying skin
CN101440783B (en) Operation control method of wind power generation
CN102348889A (en) Folding blade turbine
US20060275121A1 (en) Wind turbine with friction drive power take off on outer rim
US20130106109A1 (en) Wind power installation and method for adjusting the rotor rotation axis
US20230417219A1 (en) Vertical wind turbine comprising a coaxial pitch motor, kit for same, and method for operating same
JP2005515364A (en) Vertical axis wind turbine and self-supporting structure used therefor
US11982257B2 (en) Vertical wind turbine with controlled tip-speed ratio behavior, kit for same, and method for operating same
CN104763587A (en) Novel wind turbine linked pitch alteration system
CA2607628C (en) Wind-turbine with load-carrying skin
WO2015128426A1 (en) Pitch bearing arrangement for a wind turbine installation
US20190093628A1 (en) Vertical axis wind turbine with a telescopic rotational diameter
CN111577532A (en) Foldable vertical axis wind turbine and control method
US11519387B2 (en) Vertical wind turbine comprising rotor blade-supporting pitch motor, as well as kit for same, and method for operating same
CN102926932B (en) Automatic blade-changing speed-regulating device based on wind speed
CN114658610A (en) Transmission system and wind generating set
CN111173693A (en) Pitch bearing device
JP4875770B2 (en) Windmill semi-flexible mount
DK201570592A1 (en) Wind turbine with a gear unit and an installation method and an upgrading method thereof
JP2005180237A (en) Wind power generation device
WO2015123738A1 (en) Fluid kinetic apparatus
KR101380961B1 (en) Generator and Wind power generating system
EP4058670A1 (en) A hinged blade wind turbine with tilted axis and/or coned rotor
WO2011039777A2 (en) System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine
CN113107767B (en) Environment self-adaptive blade and control method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination