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CN113719405A - Wind generating set and wheel hub and impeller thereof - Google Patents

Wind generating set and wheel hub and impeller thereof Download PDF

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Publication number
CN113719405A
CN113719405A CN202010460635.5A CN202010460635A CN113719405A CN 113719405 A CN113719405 A CN 113719405A CN 202010460635 A CN202010460635 A CN 202010460635A CN 113719405 A CN113719405 A CN 113719405A
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CN
China
Prior art keywords
locking
locking pin
hub
locking seat
seat
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
CN202010460635.5A
Other languages
Chinese (zh)
Other versions
CN113719405B (en
Inventor
彭冲
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.)
Xinjiang Goldwind Science and Technology Co Ltd
Original Assignee
Xinjiang Goldwind Science and Technology 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 Xinjiang Goldwind Science and Technology Co Ltd filed Critical Xinjiang Goldwind Science and Technology Co Ltd
Priority to CN202010460635.5A priority Critical patent/CN113719405B/en
Publication of CN113719405A publication Critical patent/CN113719405A/en
Application granted granted Critical
Publication of CN113719405B publication Critical patent/CN113719405B/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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • 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 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • 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 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0691—Rotors characterised by their construction elements of the hub
    • 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
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/79—Bearing, support or actuation arrangements therefor
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Wind Motors (AREA)

Abstract

The application provides a wind generating set and wheel hub and impeller thereof. The hub comprises a hub body, a variable pitch bearing, a lock pin mechanism and a locking seat; the locking mechanism comprises a hub body, a locking seat, a locking pin mechanism, a locking ring, a locking pin mechanism and a locking pin mechanism, wherein the hub body is fixedly connected with a hub body; the locking pin mechanism comprises a driving assembly, an elastic piece and a locking pin, wherein the output end of the driving assembly is movably connected with the locking pin, one end of the elastic piece is fixed relative to the web plate, and the other end of the elastic piece is connected with the locking pin; when the locking seat rotates to the target position along with the rotating ring, the elastic piece is used for driving the locking pin to abut against the first part of the locking seat so as to lock the locking seat at the target position; the driving assembly is used for driving the locking pin to be away from the first position of the locking seat, so that the locking seat can rotate along with the rotating ring to leave the target position. The hub can complete blade locking without the participation of a variable pitch driving system and a driving assembly, and the reliability of blade locking is improved.

Description

Wind generating set and wheel hub and impeller thereof
Technical Field
The application relates to the technical field of wind generating sets, in particular to a wind generating set and a hub and an impeller thereof.
Background
In wind power installations, it is desirable in some cases to lock the blades to restrict the rotation of the blades relative to the hub. In the prior art, the locking of the blade can be realized through the locking pin and the locking seat, in the process of locking the blade, a variable-pitch driving system is required to accurately control a variable-pitch angle so as to enable the locking seat to reach a preset position, and meanwhile, a driving device is required to drive the locking pin to abut against a preset position of the locking seat.
The existing mode of locking the blade needs the participation of a power device to complete, however, the power device has the risk of failure, and the reliability of the process of locking the blade is low.
Disclosure of Invention
An object of the application is to provide a wind generating set and wheel hub and impeller thereof for solve the lower technical problem of reliability of the current process of locking the blade.
In a first aspect, an embodiment of the application provides a hub of a wind generating set, which includes a hub body, a pitch bearing, a lock pin mechanism and a locking seat; the locking mechanism comprises a hub body, a locking seat, a locking pin mechanism, a locking ring, a locking pin mechanism and a locking pin mechanism, wherein the hub body is fixedly connected with a hub body;
The locking pin mechanism comprises a driving assembly, an elastic piece and a locking pin, wherein the output end of the driving assembly is movably connected with the locking pin, one end of the elastic piece is fixed relative to the web plate, and the other end of the elastic piece is connected with the locking pin;
when the locking seat rotates to the target position along with the rotating ring, the elastic piece is used for driving the locking pin to abut against the first part of the locking seat so as to lock the locking seat at the target position;
the driving assembly is used for driving the locking pin to be away from the first position of the locking seat, so that the locking seat can rotate along with the rotating ring to leave the target position.
In a second aspect, an embodiment of the present application provides an impeller, including a blade and a hub provided in this application, where the blade is connected to a rotating ring of a pitch bearing in the hub.
In a third aspect, an embodiment of the present application provides a wind turbine generator system, including a master controller and a hub provided by the present application;
the master controller is in communication connection with the driving assembly of the hub and used for sending an unlocking instruction to the driving assembly;
the driving assembly is used for driving the locking pin to be far away from the first position of the locking seat according to the unlocking instruction, so that the locking seat can rotate along with the rotating ring to be far away from the target position.
Compared with the prior art, the method has the following advantages:
The hub provided by the embodiment of the application is applied to the wind generating set, when the wind generating set normally operates and the blades do not need to be locked, the locking pin is in the ejection state under the action of the elastic force of the elastic piece, and when the locking pin is in the ejection state, the locking pin is far away from the web plate and points to one side where the variable pitch bearing is located.
The locking pin of the locking pin mechanism is located near the target position, and when the blade needs to be locked, the rotating ring of the variable pitch bearing drives the locking seat to rotate towards the target position. In the process that the locking seat gradually approaches the target, the bottom surface of the locking seat is in sliding contact with the top of the locking pin, so that the locking pin overcomes the elastic force of the elastic piece and slides towards the direction close to the web plate to reach a retraction state; when the locking seat reaches the target position, the bottom surface of the locking seat is separated from the top of the locking pin, the locking pin is in an ejection state again under the action of the elastic force of the elastic piece, and the locking pin abuts against the first part of the locking seat at the moment, so that the locking seat is locked at the target position.
It should be noted that, in the process of locking the blade, when the rotating ring drives the locking seat to rotate to the target position, the rotating ring can be driven to rotate by the variable pitch driving system, and when the variable pitch driving system fails or fails, the blade can also drive the rotating ring to rotate under the drive of wind load. In addition, the locking pin also does not require a drive assembly to actuate during the locking of the blade. According to the hub provided by the embodiment of the application, the blade locking can be completed under the condition that any power device (such as a variable pitch driving system and a driving assembly) is not required, the reliability of the blade locking is improved, and the safety of the blade of the wind generating set and related parts can be effectively ensured.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.
Fig. 1 is a schematic structural diagram of a hub of a wind turbine generator system according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A according to an embodiment of the present application;
FIG. 3 is a partial cross-sectional view of the hub shown in FIG. 1 provided by an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a hub of another wind turbine provided by an embodiment of the present application;
FIG. 5 is a partial enlarged view of FIG. 4 at B provided by an embodiment of the present application;
FIG. 6 is a partial cross-sectional view of the hub shown in FIG. 4 provided by an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a latch mechanism provided in an embodiment of the present application;
fig. 8 is a partial enlarged view of a portion C in fig. 7 according to an embodiment of the present disclosure.
The reference numerals are explained as follows:
1-a hub body; 11-a web; 12-a boss;
2-a pitch bearing; 21-a fixed ring; 22-a turning ring;
3-a latch mechanism;
31-a drive assembly; 311-a power plant; 312-a pull rod; 3121-flange;
32-an elastic member; 33-a locking pin; 331-pore canal; 3311-opening of duct 331;
34-a sleeve; 341-end face;
4-a locking seat;
41-first site; 42-bottom surface; 43-second site; 44-a through hole;
5-an elastomer;
6-displacement sensor.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Fig. 1 to 3 are structural diagrams of a hub of a wind turbine generator system according to an embodiment of the present disclosure, fig. 4 to 6 are structural diagrams of a hub of another wind turbine generator system according to an embodiment of the present disclosure, and fig. 7 is a structural schematic diagram of a lock pin mechanism according to an embodiment of the present disclosure. The embodiment of the application provides a wind generating set's wheel hub, wheel hub include wheel hub body 1, become oar bearing 2, lockpin mechanism 3 and locking seat 4. A fixing ring 21 of the variable pitch bearing 2 is fixedly connected with the hub body 1, the locking seat 4 is fixed on a rotating ring 22 of the variable pitch bearing 2, and one part of the locking pin mechanism 3 is connected with a web plate 11 of the hub body 1.
The locking pin mechanism 3 comprises a driving assembly 31, an elastic member 32 and a locking pin 33, wherein the output end of the driving assembly 31 is movably connected with the locking pin 33, one end of the elastic member 32 is fixed relative to the web 11, and the other end of the elastic member 32 is connected with the locking pin 33.
When the lock seat 4 rotates to the target position along with the rotating ring 22, the elastic member 32 is used to urge the locking pin 33 to abut against the first portion 41 of the lock seat 4, so as to lock the lock seat 4 at the target position. The driving assembly 31 is used for driving the locking pin 33 away from the first portion 41 of the locking seat 4, so that the locking seat 4 can rotate along with the rotating ring 22 to leave the target position.
The fixed ring 21 of the variable pitch bearing 2 is fixed relative to the hub body 1, the rotating ring 22 of the variable pitch bearing 2 can rotate relative to the fixed ring 21, and when the hub is applied to a wind generating set, blades are connected with the rotating ring 22. The fixed ring 21 is an outer ring of the variable pitch bearing 2, and the rotating ring 22 is an inner ring of the variable pitch bearing 2; or the fixed ring 21 is an inner ring of the pitch bearing 2, and the rotating ring 22 is an outer ring of the pitch bearing 2. Although not shown in the drawings of the present application, it will be understood by those skilled in the art that there is a pitch drive system in the wind park. The variable pitch driving system is in transmission connection with the rotating ring 22 of the variable pitch bearing 2 and is used for driving the rotating ring 22 of the variable pitch bearing 2 and the blades to rotate relative to the fixed ring 21 so as to realize variable pitch of the blades.
The locking pin mechanisms 3 and the locking seats 4 in the wheel hub are used in pairs, one locking pin mechanism 3 corresponds to one locking seat 4, and the number of the locking pin mechanisms 3 in the wheel hub can be determined according to the actual design requirement. Assuming that three blades need to be connected to one hub and all three blades need to be locked by using the lock pin mechanisms 3 and the locking seats 4, three pitch bearings 2 need to be arranged on the hub body 1, the three webs 11 are respectively provided with one lock pin mechanism 3, and the rotating ring 22 of each pitch bearing 2 is provided with one locking seat 4, namely, the pitch bearings 2, the lock pin mechanisms 3 and the locking seats 4 are in one-to-one correspondence; of course, one pitch bearing 2 may also correspond to a plurality of locking pin mechanisms 3 and a plurality of locking seats 4, and the plurality of locking pin mechanisms 3 and the plurality of locking seats 4 are used for locking the same blade together; if only one or two of the three blades need to be locked with the latch mechanism 3 and the lock seat 4, the hub may be provided with only one latch mechanism 3 and one lock seat 4, or the hub may be provided with only two latch mechanisms 3 and two lock seats 4.
When the hub provided by the embodiment of the application is applied to the wind generating set, when the wind generating set normally operates and the blades do not need to be locked, the locking pin 33 is in an ejection state under the action of elastic force of the elastic piece 32, and when the locking pin 33 is in the ejection state, the locking pin 33 is far away from the web 11 and points to one side where the pitch bearing 2 is located.
The locking pin 33 of the locking pin mechanism 3 is located near the target position, and when the blade needs to be locked, the rotating ring 22 of the pitch bearing 2 drives the locking seat 4 to rotate towards the target position. During the process that the locking seat 4 gradually approaches the target position, the bottom surface 42 of the locking seat 4 is in sliding contact with the top of the locking pin 33, so that the locking pin 33 slides in the direction approaching the web 11 against the elastic force of the elastic member 32 to reach the retracted state; when the lock seat 4 reaches the target position, the bottom surface 42 of the lock seat 4 is separated from the top of the lock pin 33, the lock pin 33 is in the ejection state again by the elastic force of the elastic member 32, and the lock pin 33 abuts against the first portion 41 of the lock seat 4, thereby locking the lock seat 4 at the target position.
It should be noted that, in the process of locking the blade, when the rotating ring 22 drives the locking seat 4 to rotate to the target position, the rotating ring 22 may be driven to rotate by the pitch control driving system, and when the pitch control driving system fails or fails, the blade may also drive the rotating ring 22 to rotate under the drive of wind load, so that it is not necessary to precisely control the pitch angle when locking the blade, as long as it is ensured that the locking seat 4 can reach the target position. In addition, the locking pin 33 does not require the drive assembly 31 to be driven during the process of locking the blade. According to the hub provided by the embodiment of the application, the blade locking can be completed under the condition that any power device 311 (such as a variable pitch driving system and a driving assembly 31) is not needed, the reliability of the blade locking is improved, and the safety of the blade of the wind generating set and related components can be effectively ensured.
When the blade needs to be unlocked, the driving assembly 31 drives the locking pin 33 to slide in a direction close to the web 11 against the elastic force of the elastic member 32, so that the locking pin 33 is away from the first portion 41 of the locking seat 4 to reach a retracted state, and at this time, the pitch drive system can drive the rotating ring 22 to rotate, so that the locking seat 4 is away from the target position to unlock the blade. After the locking seat 4 is away from the target position, the driving assembly 31 may release the locking pin 33, so that the locking pin 33 is in the ejected state again by the elastic force of the elastic member 32.
It should be noted that the driving assembly 31 may be in communication connection with a master controller of the wind turbine generator system, and the driving assembly 31, receiving an unlocking command sent by the master controller, drives the locking pin 33 away from the first portion 41 of the locking seat 4 according to the unlocking command, so that the locking seat 4 can rotate with the rotating ring 22 to move away from the target position.
In one embodiment of the present application, fig. 1 to 3 show a structural schematic view of one of the hubs, and as shown in fig. 2, a boss 12 is provided on a web 11 of a hub body 1, and the boss 12 is located close to a position where a locking pin 33 is located. When the locking seat 4 rotates to the target position along with the rotating ring 22, the second portion 43 of the locking seat 4 faces and abuts against the boss 12, the locking seat 4 is located between the locking pin 33 and the boss 12 in the circumferential direction of the pitch bearing 2, and the first portion 41 is the side surface of the locking seat 4 far away from the boss 12.
Specifically, when the blade needs to be locked, the rotating ring 22 of the pitch bearing 2 drives the locking seat 4 to rotate towards the target position (the position close to the boss 12). During the process that the locking seat 4 gradually approaches the target position, the bottom surface 42 of the locking seat 4 is in sliding contact with the top of the locking pin 33, so that the locking pin 33 slides in the direction approaching the web 11 against the elastic force of the elastic member 32 to reach the retracted state; when the locking seat 4 reaches the target position, the bottom surface 42 of the locking seat 4 is separated from the top of the locking pin 33, the locking pin 33 is in the ejection state again under the elastic force of the elastic member 32, at this time, the locking pin 33 abuts against the first portion 41 of the locking seat 4, and the second portion 43 of the locking seat 4 is opposite to and abuts against the boss 12, that is, the locking seat 4 is located between the locking pin 33 and the boss 12 in the circumferential direction of the pitch bearing 2, so that the locking pin 33 and the boss 12 lock the locking seat 4 at the target position.
In the hub shown in fig. 1 to 3, the boss 12 is provided with the elastic body 5, and when the lock holder 4 rotates to the target position along with the rotating ring 22, the second portion 43 of the lock holder 4 is opposed to and abutted against the elastic body 5. That is, when the lock base 4 rotates to the target position along with the rotating ring 22, the lock base 4 does not need to directly contact with the boss 12, but directly contacts with the elastic body 5 on the boss 12, so that the lock base 4 is in flexible contact with the elastic body 5, instead of the rigid contact between the lock base 4 and the boss 12, the impact between the lock base 4 and the boss 12 is buffered and protected, and the lock base 4 and the boss 12 are protected from being damaged. The elastic body 5 may be a block-shaped body as shown in the figure, and the elastic body 5 may be in a film layer shape to cover the surface of the boss 12.
In an embodiment of the present application, fig. 4 to 6 show a schematic structural view of another hub, and as shown in fig. 5, the locking seat 4 is provided with a through hole 44, and the first portion 41 is an inner side surface of the through hole 44. When the locking seat 4 rotates to the target position along with the rotating ring 22, the elastic member 32 is used for driving the locking pin 33 to be positioned in the locking groove.
Specifically, when the blade needs to be locked, the rotating ring 22 of the pitch bearing 2 drives the locking seat 4 to rotate towards the target position (the position close to the boss 12). During the process that the locking seat 4 gradually approaches the target position, the bottom surface 42 of the locking seat 4 is in sliding contact with the top of the locking pin 33, so that the locking pin 33 slides in the direction approaching the web 11 against the elastic force of the elastic member 32 to reach the retracted state; after the locking seat 4 reaches the target position, the bottom surface 42 of the locking seat 4 is separated from the top of the locking pin 33, the top of the locking pin 33 just faces the through hole 44 of the locking seat 4, the locking pin 33 is in the ejection state again under the elastic force of the elastic member 32, and the locking pin 33 extends into the through hole 44 of the locking seat 4 and abuts against the inner side surface of the through hole 44, so that the locking pin 33 locks the locking seat 4 at the target position.
For the hub shown in fig. 4, the boss 12 may or may not be provided on the web 11 of the hub. If the boss 12 is provided on the web 11 of the hub, after the locking seat 4 reaches the target position, the top of the locking pin 33 just faces the through hole 44 of the locking seat 4, and the second portion 43 of the locking seat 4 faces and abuts against the boss 12.
In the wheel hub shown in fig. 4 to 6, if the boss 12 is provided on the wheel hub, the elastic body 5 may be provided on the boss 12, and when the lock base 4 rotates to the target position along with the rotating ring 22, the second portion 43 of the lock base 4 is directly opposite to and abuts against the elastic body 5. That is, when the lock base 4 rotates to the target position along with the rotating ring 22, the lock base 4 does not need to directly contact with the boss 12, but directly contacts with the elastic body 5 on the boss 12, so that the lock base 4 is in flexible contact with the elastic body 5, instead of the rigid contact between the lock base 4 and the boss 12, the impact between the lock base 4 and the boss 12 is buffered and protected, and the lock base 4 and the boss 12 are protected from being damaged. The elastic body 5 may be a block-shaped body as shown in the figure, and the elastic body 5 may be in a film layer shape to cover the surface of the boss 12. Of course, when the boss 12 is provided to the hub shown in fig. 4 to 6, the elastic body 5 may not be provided to the boss 12.
In the embodiment of the present application, the structure of the latch mechanism 3 is the same in the hub shown in fig. 1 and the hub shown in fig. 4. As shown in fig. 7, the latch mechanism 3 further includes a sleeve 34 with an open end, and the sleeve 34 penetrates the web 11 and is fixedly connected with the web 11. The locking pin 33 is disposed in the opening of the sleeve 34, the elastic member 32 is disposed in the sleeve 34, one end of the elastic member 32 is connected to the end surface 341 of the sleeve 34, and the other end is close to the opening of the sleeve 34 and connected to the locking pin 33.
Optionally, the tail of the locking pin 33 is sleeved in the sleeve 34 and is in sliding fit with the sleeve 34, on one hand, the sleeve 34 may provide a support for the locking pin 33, so that the locking pin 33 may firmly lock the locking seat 4 at the target position; on the other hand, the lock pin 33 is slidable within the sleeve 34 when switching between the ejected state and the retracted state, and the sleeve 34 can correct the sliding direction of the lock pin 33.
Alternatively, the elastic member 32 may be a spring, an axial direction of which is parallel to an axial direction of the sleeve 34. The elastic member 32 may also be a member made of other elastic materials, such as a rubber strip.
In the embodiment of the present application, the driving assembly 31 includes a power device 311 and a pull rod 312, wherein the pull rod 312 penetrates through an end surface 341 of the sleeve 34. The power device 311 is in transmission connection with a first end of the pull rod 312, and a second end of the pull rod 312 is movably connected with the locking pin 33 as an output end of the driving assembly 31. The power device 311 is used for driving the pull rod 312 to move along the axial direction of the sleeve 34 so as to make the locking pin 33 away from the first position 41 of the locking seat 4.
In the embodiment of the present application, the power device 311 may be determined according to the actual design requirement, as long as the axial movement of the driving rod 312 along the sleeve 34 can be achieved. Taking the figure as an example, the power device 311 is a motor, and a motor shaft of the motor is in transmission connection with the first end of the pull rod 312 in a lead screw manner. Alternatively, the power device 311 is an electromagnetic push rod, and the push rod of the electromagnetic push rod is connected with the first end of the pull rod 312. Alternatively, the power unit 311 is a hydraulic cylinder, and a hydraulic rod of the hydraulic cylinder is connected to the first end of the pull rod 312. Other types of power units 311 and the connection between the power unit 311 and the pull rod 312 are not described in detail herein.
In one embodiment of the present application, as shown in fig. 8, the second end of the pull rod 312 is provided with a flange 3121, the locking pin 33 is provided with a passage 331, and a radial dimension at the opening 3311 of the passage 331 is smaller than a radial dimension at other positions of the passage 331. The flange 3121 of the pull rod 312 is disposed within the tunnel 331 and the radial dimension of the flange 3121 is greater than the radial dimension at the opening 3311 of the tunnel 331.
The flange 3121 of the locking pin 33 is arranged in the hole 331 of the locking pin 33, so that the pull rod 312 and the locking pin 33 are movably connected, even if the pull rod 312 is not moved, the locking pin 33 can move along with the extension and the compression of the elastic piece 32, and the switching between the ejection state and the retraction state of the locking pin 33 is realized. In addition, since the radial dimension of the flange 3121 is larger than the radial dimension of the opening 3311 of the duct 331, when the power device 311 pulls the pull rod 312, the flange 3121 of the pull rod 312 can abut against the edge of the positioning pin at the opening 3311 of the duct 331, so as to drive the positioning pin to move along the axial direction of the sleeve 34, and the positioning pin is retracted.
In one embodiment of the present application, as shown in fig. 2 and 5, a displacement sensor 6 is disposed on the boss 12, when the locking seat 4 rotates to the target position along with the rotating ring 22, the second portion 43 of the locking seat 4 contacts the displacement sensor 6, and the displacement sensor 6 sends information indicating that the blade is locked.
Optionally, a master controller of the wind generating set is in communication connection with the displacement sensor 6 of the hub, and the master controller receives information sent by the displacement sensor 6 and indicating that the blade is locked.
Based on the same inventive concept, the embodiment of the present application further provides an impeller, the impeller includes a blade and the hub provided in the above embodiment of the present application, and the blade is connected with the rotating ring 22 of the pitch bearing 2 in the hub.
Optionally, the fixed ring 21 is an outer ring of the variable pitch bearing 2, and the rotating ring 22 is an inner ring of the variable pitch bearing 2; or the fixed ring 21 is an inner ring of the pitch bearing 2, and the rotating ring 22 is an outer ring of the pitch bearing 2. The locking pin mechanisms 3 and the locking seats 4 in the wheel hub are used in pairs, one locking pin mechanism 3 corresponds to one locking seat 4, and the number of the locking pin mechanisms 3 in the wheel hub can be determined according to the actual design requirement. Assuming that three blades need to be connected to one hub and all three blades need to be locked by using the lock pin mechanisms 3 and the locking seats 4, three pitch bearings 2 need to be arranged on the hub body 1, the three webs 11 are respectively provided with one lock pin mechanism 3, and the rotating ring 22 of each pitch bearing 2 is provided with one locking seat 4, namely, the pitch bearings 2, the lock pin mechanisms 3 and the locking seats 4 are in one-to-one correspondence; of course, one pitch bearing 2 may also correspond to a plurality of locking pin mechanisms 3 and a plurality of locking seats 4, and the plurality of locking pin mechanisms 3 and the plurality of locking seats 4 are used for locking the same blade together; if only one or two of the three blades need to be locked with the latch mechanism 3 and the lock seat 4, the hub may be provided with only one latch mechanism 3 and one lock seat 4, or the hub may be provided with only two latch mechanisms 3 and two lock seats 4.
The impeller provided by the embodiment of the present application has the same inventive concept and the same beneficial effects as those of the foregoing embodiments, and the details that are not shown in the impeller in detail can refer to the foregoing embodiments, and are not described herein again.
Based on the same inventive concept, the embodiment of the application also provides a wind generating set, and the wind generating set comprises a main controller and the hub provided by the embodiment of the application.
The master controller is connected with the driving assembly 31 of the wheel hub in a communication mode and used for sending unlocking instructions to the driving assembly 31. The driving assembly 31 is used for driving the locking pin 33 to move away from the first part 41 of the locking seat 4 according to an unlocking command, so that the locking seat 4 can rotate along with the rotating ring 22 to move away from the target position.
In one embodiment of the application, the master controller is in communicative connection with the displacement sensor 6 of the hub. When the locking seat 4 rotates to the target position along with the rotating ring 22, the second part 43 of the locking seat 4 contacts with the displacement sensor 6, the information which is sent by the displacement sensor 6 and indicates that the blade is locked is sent, and the master controller receives the information which is sent by the displacement sensor 6 and indicates that the blade is locked.
It will be understood by those skilled in the art that when the hub is applied to a wind turbine generator system, the motor shaft of the generator is in driving connection with the hub, and the blades are connected with the rotating ring 22 of the pitch bearing 2 in the hub.
Optionally, the fixed ring 21 is an outer ring of the variable pitch bearing 2, and the rotating ring 22 is an inner ring of the variable pitch bearing 2; or the fixed ring 21 is an inner ring of the pitch bearing 2, and the rotating ring 22 is an outer ring of the pitch bearing 2. The locking pin mechanisms 3 and the locking seats 4 in the wheel hub are used in pairs, one locking pin mechanism 3 corresponds to one locking seat 4, and the number of the locking pin mechanisms 3 in the wheel hub can be determined according to the actual design requirement. Assuming that three blades need to be connected to one hub and all three blades need to be locked by using the lock pin mechanisms 3 and the locking seats 4, three pitch bearings 2 need to be arranged on the hub body 1, the three webs 11 are respectively provided with one lock pin mechanism 3, and the rotating ring 22 of each pitch bearing 2 is provided with one locking seat 4, namely, the pitch bearings 2, the lock pin mechanisms 3 and the locking seats 4 are in one-to-one correspondence; of course, one pitch bearing 2 may also correspond to a plurality of locking pin mechanisms 3 and a plurality of locking seats 4, and the plurality of locking pin mechanisms 3 and the plurality of locking seats 4 are used for locking the same blade together; if only one or two of the three blades need to be locked with the latch mechanism 3 and the lock seat 4, the hub may be provided with only one latch mechanism 3 and one lock seat 4, or the hub may be provided with only two latch mechanisms 3 and two lock seats 4.
The wind turbine generator set provided by the embodiment of the application has the same inventive concept and the same beneficial effects as the embodiments described above, and the content not shown in detail in the wind turbine generator set can refer to the embodiments described above, and is not described again here.
By applying the embodiment of the application, at least the following technical effects are achieved:
in the process of locking the blades, when the rotating ring drives the locking seat to rotate towards the target position, the rotating ring can be driven to rotate by the variable pitch driving system, and when the variable pitch driving system breaks down or fails, the blades can also drive the rotating ring to rotate under the driving of wind load. In addition, the locking pin also does not require a drive assembly to actuate during the locking of the blade. According to the hub provided by the embodiment of the application, the blade locking can be completed under the condition that any power device (such as a variable pitch driving system and a driving assembly) is not required, the reliability of the blade locking is improved, and the safety of the blade of the wind generating set and related parts can be effectively ensured.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (11)

1. The hub of the wind generating set is characterized by comprising a hub body (1), a variable pitch bearing (2), a lock pin mechanism (3) and a locking seat (4); the fixing ring (21) of the variable-pitch bearing (2) is fixedly connected with the hub body (1), the locking seat (4) is fixed on the rotating ring (22) of the variable-pitch bearing (2), and one part of the lock pin mechanism (3) is connected with the web plate (11) of the hub body (1);
the locking pin mechanism (3) comprises a driving assembly (31), an elastic piece (32) and a locking pin (33), the output end of the driving assembly (31) is movably connected with the locking pin (33), one end of the elastic piece (32) is fixed relative to the web plate (11), and the other end of the elastic piece (32) is connected with the locking pin (33);
when the locking seat (4) rotates to a target position along with the rotating ring (22), the elastic piece (32) is used for driving the locking pin (33) to abut against a first part (41) of the locking seat (4) so as to lock the locking seat (4) at the target position;
the driving component (31) is used for driving the locking pin (33) to move away from the first position (41) of the locking seat (4), so that the locking seat (4) can rotate along with the rotating ring (22) to leave the target position.
2. Hub according to claim 1, wherein the web (11) is provided with a boss (12);
when the locking seat (4) rotates to the target position along with the rotating ring (22), a second part (43) of the locking seat (4) is opposite to and abutted against the boss (12), the locking seat (4) is located between the locking pin (33) and the boss (12) in the circumferential direction of the variable-pitch bearing (2), and the first part (41) is the side face, far away from the boss (12), of the locking seat (4).
3. Hub according to claim 1, wherein the locking seat (4) is provided with a through hole (44), the first portion (41) being an inner side of the through hole (44);
when the locking seat (4) rotates to a target position along with the rotating ring (22), the elastic piece (32) is used for driving the locking pin (33) to be positioned in the through hole (44).
4. Hub according to any of claims 1 to 3, wherein the latch mechanism (3) further comprises a sleeve (34) open at one end, the sleeve (34) extending through the web (11) and being fixedly connected to the web (11);
the locking pin (33) is arranged at the opening of the sleeve (34); the elastic piece (32) is arranged in the sleeve (34), one end of the elastic piece (32) is connected with the end surface (341) of the sleeve (34), and the other end of the elastic piece is close to the opening of the sleeve (34) and is connected with the locking pin (33).
5. Hub according to claim 4, wherein the drive assembly (31) comprises a power means (311) and a tie rod (312), the tie rod (312) extending through an end face (341) of the sleeve (34);
the power device (311) is in transmission connection with a first end of the pull rod (312), and a second end of the pull rod (312) is used as an output end of the driving component (31) and is movably connected with the locking pin (33);
the power device (311) is used for driving the pull rod (312) to move along the axial direction of the sleeve (34) so as to enable the locking pin (33) to be far away from the first position (41) of the locking seat (4).
6. Hub according to claim 5, wherein the second end of the tie rod (312) is provided with a flange (3121), the locking pin (33) is provided with a passage (331), the radial dimension at the opening (3311) of the passage (331) being smaller than the radial dimension at other positions of the passage (331);
a flange (3121) of the tie rod (312) is disposed within the tunnel (331), and a radial dimension of the flange (3121) is greater than a radial dimension at an opening (3311) of the tunnel (331).
7. Hub according to claim 2, wherein an elastic body (5) is arranged on the boss (12), and when the locking seat (4) rotates to the target position along with the rotating ring (22), the second portion (43) of the locking seat (4) is opposite to and abutted against the elastic body (5).
8. Hub according to claim 2, wherein a displacement sensor (6) is arranged on the boss (12), when the locking seat (4) rotates to the target position along with the rotating ring (22), a second part (43) of the locking seat (4) contacts with the displacement sensor (6), and the displacement sensor (6) sends information indicating that the blade is locked.
9. An impeller, characterized in that it comprises a hub according to any one of claims 1-8 and a blade, which is connected to a rotating ring (22) of a pitch bearing (2) in the hub.
10. A wind park comprising a master controller and a hub according to any of claims 1 to 8;
the main controller is in communication connection with a driving assembly (31) of the wheel hub and is used for sending an unlocking instruction to the driving assembly (31);
the driving assembly (31) is used for driving the locking pin (33) to be away from the first position (41) of the locking seat (4) according to the unlocking instruction, so that the locking seat (4) can rotate along with the rotating ring (22) to be away from the target position.
11. Wind park according to claim 10, wherein the master controller is communicatively connected to the displacement sensor (6) of the hub for receiving information sent by the displacement sensor (6) indicating that the blade is locked.
CN202010460635.5A 2020-05-26 2020-05-26 Wind generating set and hub and impeller thereof Active CN113719405B (en)

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CN201843735U (en) * 2010-11-10 2011-05-25 三一电气有限责任公司 Wind wheel locking device and wind-driven generator unit
CN102317621A (en) * 2009-02-16 2012-01-11 苏司兰能源有限公司 Brake system for a wind turbine
US20140028025A1 (en) * 2011-04-14 2014-01-30 Suzlon Energy Gmbh Device and method for determining a blade position and for ending a safety run
CN206329455U (en) * 2016-12-29 2017-07-14 北京金风科创风电设备有限公司 Wind power generating set impeller hydraulic locking system
CN206668478U (en) * 2017-04-19 2017-11-24 新疆金风科技股份有限公司 Impeller locking device and wind power generating set
CN206770128U (en) * 2017-05-23 2017-12-19 北京三力新能科技有限公司 A kind of blade locking arrangement of wind power generating set
CN109505733A (en) * 2019-01-23 2019-03-22 上海电气风电集团有限公司 A kind of blade locking device applied to wind-powered electricity generation typhoon unit
CN110566419A (en) * 2019-09-26 2019-12-13 北京金风科创风电设备有限公司 Blade locking device, hub, impeller and wind generating set
CN210033710U (en) * 2019-03-18 2020-02-07 明阳智慧能源集团股份公司 Automatic blade locking device for wind generating set to be locked along axial direction of blade root

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102317621A (en) * 2009-02-16 2012-01-11 苏司兰能源有限公司 Brake system for a wind turbine
CN201843735U (en) * 2010-11-10 2011-05-25 三一电气有限责任公司 Wind wheel locking device and wind-driven generator unit
US20140028025A1 (en) * 2011-04-14 2014-01-30 Suzlon Energy Gmbh Device and method for determining a blade position and for ending a safety run
CN206329455U (en) * 2016-12-29 2017-07-14 北京金风科创风电设备有限公司 Wind power generating set impeller hydraulic locking system
CN206668478U (en) * 2017-04-19 2017-11-24 新疆金风科技股份有限公司 Impeller locking device and wind power generating set
CN206770128U (en) * 2017-05-23 2017-12-19 北京三力新能科技有限公司 A kind of blade locking arrangement of wind power generating set
CN109505733A (en) * 2019-01-23 2019-03-22 上海电气风电集团有限公司 A kind of blade locking device applied to wind-powered electricity generation typhoon unit
CN210033710U (en) * 2019-03-18 2020-02-07 明阳智慧能源集团股份公司 Automatic blade locking device for wind generating set to be locked along axial direction of blade root
CN110566419A (en) * 2019-09-26 2019-12-13 北京金风科创风电设备有限公司 Blade locking device, hub, impeller and wind generating set

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