CN112443462A - Integrated base for wind driven generator - Google Patents

Integrated base for wind driven generator Download PDF

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Publication number
CN112443462A
CN112443462A CN202011326979.3A CN202011326979A CN112443462A CN 112443462 A CN112443462 A CN 112443462A CN 202011326979 A CN202011326979 A CN 202011326979A CN 112443462 A CN112443462 A CN 112443462A
Authority
CN
China
Prior art keywords
base
bearing
integration
integrated
driven generator
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
CN202011326979.3A
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Chinese (zh)
Inventor
崔新维
段辰玥
胡成明
何家志
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 Sanli Xinneng Science & Technology Co ltd
Original Assignee
Beijing Sanli Xinneng Science & 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 Beijing Sanli Xinneng Science & Technology Co ltd filed Critical Beijing Sanli Xinneng Science & Technology Co ltd
Priority to CN202011326979.3A priority Critical patent/CN112443462A/en
Publication of CN112443462A publication Critical patent/CN112443462A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • 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
    • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

Abstract

The invention discloses an integrated base scheme for a wind driven generator. The scheme is mainly used for designing the base of the multi-megawatt wind driven generator, and is mainly characterized in that a transmission system adopts a double-bearing supporting scheme, the traditional bolt connection is cancelled through the integrated design of the bearing seat and the base, the materials are fully utilized through functional structure coupling, the stress level is reduced, the bearing capacity of a structural system is improved, and the weight and the cost of components are effectively reduced. Mainly comprises the integration of a triple structure: the structure integration of bearing frame and base, gear box elastic support seat and the integration of above-mentioned structure, the integration of yaw motor reduction gear installation otic placode and above-mentioned structure. The structural scheme designed by the invention can achieve the effects of reducing weight or cost, improving reliability and compacting the structure.

Description

Integrated base for wind driven generator
Technical Field
The invention relates to an integrated base for a wind driven generator, in particular to a design problem of a non-direct-drive megawatt wind driven generator transmission system.
Background
The main idea of the design and development of the wind driven generator is to increase the capacity of a single machine as much as possible so as to reduce the unit cost through the scale effect. However, as the capacity of the units increases, the loads to which the main components of the plant are subjected also increase in synchronism and even to a greater extent. In order to meet the bearing requirements, the volume and the weight of main parts of the unit are increased, which brings new challenges for the unit design work, such as material selection, manufacturing process determination, assembly scheme establishment and the like.
Because the bearing condition of each part in the machine is analyzed to be more complex, in order to simplify the design, each part is separately designed according to the functional requirement, and the coupling ratio is reduced, so that the method is a common design idea. Taking a fan drive train support structure as an example, in the conventional scheme, a bearing seat directly related to a drive train and a base of a main bearing structure of the whole unit are designed and manufactured separately and finally assembled together. However, as the capacity and size of the unit continuously increase, the defects of material redundancy, unreliable connection and the like in the design scheme of the independent parts become increasingly prominent, and a more scientific integrated design idea needs to be introduced, so that the same material can realize more functions, cost reduction and efficiency improvement by deeply analyzing the bearing characteristics of each part and structure and considering the bearing characteristics of each part and structure.
Disclosure of Invention
Aiming at the inherent defects of the prior art, the invention enables the material at the same part to realize different supporting functions under different working conditions as far as possible by skillfully designing the structural characteristics of the part, thereby improving the utilization rate of the material.
In the embodiment of the invention, the main shaft support and the base support are designed in an integrated manner, in the process, the elastic support seat of the gear box and the mounting structure of the yaw speed reducer are further integrated, the aim of realizing multifunctional support by using a single part is achieved by deeply analyzing the bearing characteristics of all parts, the material arrangement is more reasonable, and the support rigidity is higher.
Specifically, in the main embodiment of the invention, the front and rear main bearing seats are connected with the yaw platform base through the special-shaped transition cylinder, so that the additional loads from the impeller and the main shaft can be more directly transmitted to the yaw base and the tower cylinder; then, in the main embodiment of the invention, the elastic supporting seat of the gear box is arranged at the rear end of the rear bearing seat, and the elastic supporting seat is taken into consideration with the supporting ring of the rear main bearing and the yaw platform, particularly the mounting lug plate of the yaw motor reducer, so that the integrated design is realized, and the load at the gear box is more reasonably transferred to the base of the yaw platform; finally, in the main embodiment of the invention, the positions of the impeller locking pin seats are reasonably adjusted, and the materials are utilized to connect the mounting lug plates of the yaw motor speed reducer distributed on the two sides of the yaw platform, so that the integration of the positions can effectively improve the bearing rigidity during the yaw action, and meanwhile, the occurrence of the annular structure can also greatly improve the structural rigidity of the base and reduce the stress level.
According to the embodiment of the invention, the bearing support ring, the connecting cylinder, the transition cylinder, the yaw base platform, the gear box support cantilever beam, the impeller locking pin seat and other features are integrated on the same part, different functional requirements corresponding to different features are realized by using the same material through skillful processing of the connection part of the main features, and finally, the part is integrally designed from a macroscopic view by depending on an integration thought.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic layout view of a high-capacity horizontal-axis wind turbine unit based on four-point support according to a main embodiment of the present invention.
Fig. 2 is a side view of an integrated base according to the main embodiment of the present invention.
Fig. 3 is a top view of the integrated base according to the main embodiment of the present invention.
Fig. 4 is a schematic diagram of an arrangement of a wind turbine generator based on two-point support according to a similar embodiment of the present invention.
Fig. 5 is a side view of a one-piece base provided in accordance with a similar embodiment of the present invention.
FIG. 6 is a top view of a one-piece base provided in accordance with a similar embodiment of the present invention.
Figure 7 is an isometric view of an integrated base provided in a similar embodiment of the invention.
In the figure, 1-a wind driven generator, 2-an integrated base, 21-a front bearing seat, 22-a rear bearing seat, 23-a transition structure, 24-a yaw platform base, 25-a bearing seat connecting cylinder, 26-an elastic supporting cantilever beam, 261-a first fulcrum, 262-a second fulcrum, 27-a yaw motor reducer mounting lug plate, 28-an impeller locking pin seat, 29-a reinforced transition structure, 210-a bearing seat X-type connecting rib plate, 3-a main shaft and impeller assembly, 4-a power generation unit, 5-a hydraulic elastic support, 6-a yaw system, 7-a tower drum and 8-a gear box connecting structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
The invention discloses an integrated base for a wind driven generator, which has the following preferred specific embodiments:
as shown in the attached figure 1, the scheme is applied to a high-capacity horizontal shaft wind driven generator, and particularly the unit design of which the transmission system adopts a four-point support scheme. The core parts of the unit comprise an impeller, a main shaft, a front main bearing, a rear main bearing, a gear box, a generator, an elastic support, a base and the like, wherein the base is used for supporting a transmission system and connecting a yaw system.
In a typical embodiment of the present invention, as shown in fig. 2, the base comprises three main parts: bearing support structure, driftage bearing structure, elastic support fixed knot construct. The bearing support structure mainly refers to three characteristics of a figure 21-front bearing seat, a figure 22-rear bearing seat and a figure 25-bearing seat connecting cylinder, the three characteristics are integrated with a 24-yaw platform base through a 23-transition structure, and the 23-transition structure is designed according to the principle that a force transmission line is shortest, so that the bearing support structure is supported by the yaw support structure more when loaded, and the bearing reliability is improved. On the other hand, the 26-elastic supporting cantilever beam is used as an installation structure of the elastic support of the gearbox, the pivot of the 26-elastic supporting cantilever beam is artificially divided into a front part and a rear part which are respectively 261-a first pivot and 262-a second pivot, and the 261-first pivot extends to the position of a rear reinforcing ring rib of the 22-rear bearing seat and is overlapped with a part of materials of the 22-rear bearing seat and the 23-transition structure in space, so that the same materials can be realized in an integrated mode, not only can provide a support for the rear bearing, but also can serve as the 261-first pivot of the elastic supporting cantilever beam, and the load can be conveniently transmitted to the 24-yaw platform base as soon as possible and finally transmitted to the 7-tower barrel.
In the conventional embodiment of the present invention, as shown in fig. 2, materials and features can be arranged in front of and behind the 2-integrated base, for example, a 28-impeller locking pin seat can be arranged in the front end, so that the 27-yaw motor reducer mounting lug plates positioned on two sides of the base can be connected with the 28-impeller locking pin seat and the 262-second pivot of the 26-elastic supporting cantilever beam as shown in fig. 3, and the integrated design concept is also adopted, and the features are considered integrally, so that the 24-yaw supporting platform is finally presented as an integral ring, the integral torsional rigidity is improved, and the bearing reliability of parts is improved.
As shown in figure 4, the invention is a concrete implementation mode of another embodiment of the invention, which is mainly characterized in that the power generation unit is terminated on the base through a gearbox connecting structure (8), and the arrangement scheme of two-point support presented by elastic support related parts and structures of the gearbox is omitted. Under this scheme, the design that integrates with driftage supporting platform still is followed to main bearing structure around, improves material utilization, guarantees bearing capacity.
As shown in fig. 5, it is a specific implementation of another embodiment of the present invention, which is mainly characterized in that the axial support between the front and rear bearing support structures is not provided by means of a connecting structure any more, but by introducing a reinforced transition structure (29) feature, i.e. the axial support of the front and rear bearings is mainly provided by means of the yaw deck base through the transition mechanism.
As shown in fig. 6, the concrete implementation manner of another embodiment of the present invention is mainly characterized in that, in order to improve the annular rigidity of the mounting ear plate of the yaw motor reducer, when a structure similar to the impeller locking pin seat is not required, materials can be supplemented in front and at the back of the base platform, and the mounting ear plates of the yaw motor reducer on the left and right sides of the base are connected, so as to achieve the purpose of integrating the ear plate, the transition cylinder and the base main body.
As shown in fig. 7, a concrete implementation manner of another embodiment of the present invention is mainly characterized in that an integral connecting cylinder is not designed between the front and rear bearing support structures, but a disconnected X-shaped connecting rib plate (210) with an inverted T-shaped or inverted pi-shaped cross section is used for connection, so that on one hand, materials are saved, on the other hand, when the front and rear bearings are loaded, the directions of radial forces are usually opposite, and by using the X shape, the front and rear bearing seats can be supported with each other to a certain extent, and the stress level is reduced.
In summary, the integrated base for the wind driven generator provided by the invention has the advantages that the bearing seat and the yaw base are integrated, so that the connecting structure of the traditional split type part is omitted; the mounting lug plates of the yaw motor speed reducer arranged on two sides of the base are integrated with structures such as an impeller locking pin seat, so that an annular shape is formed; the fulcrum of the elastic support cantilever beam is integrated with the bearing seat, the yawing base and the transition cylinder, so that the stress condition of a local structure is optimized, the function-oriented local structure coupling is finally realized, and the material utilization rate and the bearing reliability are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. An integrated base for a wind driven generator is characterized in that a group of bearings are respectively arranged in the front and the back of the integrated base (2) of the wind driven generator (1) and used for supporting a main shaft and an impeller assembly (3), a power generation unit (4) connected with the rear end of the main shaft can be installed on the integrated base (2) through a hydraulic elastic support (5), and a yawing system (6) is installed on the lower portion of the base.
2. The integrated pedestal (2) according to claim 1, wherein the front bearing seat (21) and the rear bearing seat (22) are connected with the yaw platform pedestal (24) through a transition structure (23), and local features of the transition structure (23) are respectively matched with the size requirements of the front and rear bearing seats (21, 22) to realize the first re-integration.
3. Front and rear bearing blocks (21, 22) according to claim 2, wherein a bearing block connecting cylinder (25) or a bearing block X-shaped connecting rib plate (210) is arranged between the bearing blocks, and axial support for the bearing can also be provided through a reinforced transition structure (29).
4. The transition structure (23) according to claim 2, characterized in that the rear end can be designed with a first fulcrum (261) for the hydroelastic support cantilever beam (26), which fulcrum simultaneously shares material with the stiffener of the rear bearing block (22) for a second re-integration.
5. The integrated base (2) as claimed in claim 1, wherein the yaw motor reducer mounting lugs (27) are respectively disposed on both sides of the yaw platform base (24) near the lower portion, and are connected to the structure at the front end of the base (which may be the impeller locking pin seat (28)) and the structure at the rear end of the base (which may be the second pivot (262) of the elastic supporting cantilever beam (26)), so that the lugs are integrally formed in a ring structure, thereby realizing the third integration.
6. The impeller locking pin holder (28) according to claim 5, wherein the pin holder cross rib is made of the same material as the front part of the yaw motor reducer mounting lug plate (27).
7. Elastically supported cantilever beam (26) according to claims 4 and 5, characterized in that the load is made uniform and the material load is reduced by the design of the front and rear fulcrums.
CN202011326979.3A 2020-11-24 2020-11-24 Integrated base for wind driven generator Pending CN112443462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011326979.3A CN112443462A (en) 2020-11-24 2020-11-24 Integrated base for wind driven generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011326979.3A CN112443462A (en) 2020-11-24 2020-11-24 Integrated base for wind driven generator

Publications (1)

Publication Number Publication Date
CN112443462A true CN112443462A (en) 2021-03-05

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Family Applications (1)

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CN202011326979.3A Pending CN112443462A (en) 2020-11-24 2020-11-24 Integrated base for wind driven generator

Country Status (1)

Country Link
CN (1) CN112443462A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140010664A1 (en) * 2011-03-08 2014-01-09 Vestas Wind Systems A/S Wind turbine rotor shaft support structure
CN106968899A (en) * 2017-05-23 2017-07-21 北京三力新能科技有限公司 A kind of base of wind power generating set
CN108087217A (en) * 2017-12-06 2018-05-29 上海电气风电集团有限公司 The component and Wind turbines of a kind of built-up shaft bearing and forebay
CN211819802U (en) * 2020-04-13 2020-10-30 三一重能有限公司 Wind driven generator cabin underframe and wind driven generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140010664A1 (en) * 2011-03-08 2014-01-09 Vestas Wind Systems A/S Wind turbine rotor shaft support structure
CN106968899A (en) * 2017-05-23 2017-07-21 北京三力新能科技有限公司 A kind of base of wind power generating set
CN108087217A (en) * 2017-12-06 2018-05-29 上海电气风电集团有限公司 The component and Wind turbines of a kind of built-up shaft bearing and forebay
CN211819802U (en) * 2020-04-13 2020-10-30 三一重能有限公司 Wind driven generator cabin underframe and wind driven generator

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Application publication date: 20210305

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