CN115523099A - Rhombic multi-wind-wheel basic unit and rhombic structure modularized multi-wind-wheel wind turbine generator set - Google Patents
Rhombic multi-wind-wheel basic unit and rhombic structure modularized multi-wind-wheel wind turbine generator set Download PDFInfo
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
- F03D9/257—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor the wind motor being part of a wind farm
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- 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
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Abstract
The invention discloses a rhombic multi-wind-wheel basic unit and a rhombic structure modularized multi-wind-wheel wind turbine generator set, wherein a rhombic multi-wind-wheel structure is taken as a basic unit to form the multi-wind-wheel wind turbine generator set, and the multi-wind-wheel wind turbine generator set comprises a rhombic multi-wind-wheel basic unit, an expanded layout method for forming the multi-wind-wheel wind turbine generator set by 1-6 groups of rhombic multi-wind-wheel basic units, a supporting and connecting structure inside the single rhombic multi-wind-wheel basic unit, a supporting and connecting structure among the rhombic multi-wind-wheel basic units, a supporting structure of the whole multi-wind-wheel wind turbine generator set and a yaw and pitch control method of the whole multi-wind-wheel wind turbine generator set. The rhombic structure is used as a basic unit, and expansion is carried out according to the rule, so that the modularized integral layout of the multi-wind-wheel wind turbine generator set is realized; through the multi-wind-wheel wind turbine generator set and the control thereof, the ultra-high-power wind turbine generator set application scene is oriented, and the advantages of reducing the size and the weight of the whole machine and parts, reducing the center of gravity, optimizing the load, improving the convenience of manufacturing, transporting and installing and the like are achieved.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a rhombic multi-wind-wheel basic unit and a rhombic structure modularized multi-wind-wheel wind power generator set.
Background
In recent years, the capacity of a single machine of a wind power generation unit is continuously and rapidly increased, the development speed of offshore wind power is obviously increased, and the development from offshore acceleration to deep sea is promoted. Conventional wind turbine generator system adopts the unit usually, the downwind direction, three blades, pylon structure, the biggest wind turbine generator system unit capacity that has realized the operation internationally at present has reached 12MW, blade length 100 meters above, future along with the further increase of unit capacity, unit weight, the size will further increase, and the generated energy promotion that the capacity increase brought is then slow in the promotion of weight, and the focus is high, the degree of difficulty increase at marine steady operation, design, manufacturing, the installation, it is big to maintain the degree of difficulty, make the cost advantage that the maximization was brought difficult to continue.
A study of an article multi-rotors, a solution to 20MW and beyond (method of multi-wind wheel wind turbine generator set of 20MW and above) (2012) provides an arrangement mode of a 20MW multi-wind wheel wind turbine generator set, which is composed of 45 wind turbine sets of 444kW, and the wind turbine sets are distributed on 6 layers of supporting structures, wherein the 1 lowest layer comprises 6 wind turbine sets, and the 7, 8, 9, 8 and 7 wind turbine sets are upwards sequentially arranged. An article & lt [ Different grid-connected structures of multi-wind wheel wind turbine generator & gt ] (2018) researches provide an arrangement mode of a 21MW multi-wind wheel wind turbine generator and a grid-connected access topological structure thereof, wherein the arrangement mode comprises 7 wind turbine generators of 3MW, 6 of the wind turbine generators are distributed in a hexagon shape, and the other 1 wind turbine generator is distributed in the center of the hexagon. The article provides a structural mode of a multi-wind-wheel wind turbine generator set for a 20MW level scene, but the layout thought is relatively simple, and the modularization thought is not embodied.
The Chinese invention application CN201110241037 discloses a multi-rotor wind power generation system capable of automatically facing wind, which can comprise 2-100 wind turbines which are distributed on a plurality of beams of a frame structure, the length of the beams at two sides of the frame is unequal, and the number of the wind turbines arranged on the longer beam is more than that of the wind turbines arranged on the shorter beam. The multi-wind-wheel wind power system structure has the problems of asymmetry on two sides of a tower, can be realized under the condition of relatively small power level, and does not provide a distribution method. PCT application CN201780025670 discloses a wind turbine system with multiple rotors with several wind turbine modules mounted to a support structure, specifically comprising 4 rotors, 2 symmetrically distributed in groups on 2 beams. PCT application CN201680073884 discloses a wind power plant and a multi-rotor wind turbine system, which further expands 2 rotors as a group to the wind power plant through a plurality of groups by combining a certain frame structure on the basis of PCT application CN 201780025670. The multi-wind wheel structure mainly takes 2 small units as basic units, and mainly researches the structure of 4 impeller units.
Disclosure of Invention
In order to solve the problems that in the existing multi-wind-wheel wind turbine generator technology, a method for arranging blades is relatively simple, a modularized layout thought cannot be fully reflected, and the like, the invention provides a rhombic multi-wind-wheel basic unit and a rhombic-structure modularized multi-wind-wheel wind turbine generator set.
In order to achieve the purpose, the invention provides the following technical scheme:
a rhombic multi-wind-wheel basic unit comprises a rhombic truss type supporting structure, 4 wind turbine sets distributed at four corners of the rhombic truss type supporting structure, and a supporting/fixing module for connecting the truss type supporting structure with a single wind turbine set; the supporting/fixing module is a connecting module arranged at the bottom of an engine room of a single wind turbine generator, is used for connecting the truss type supporting structures of different single wind turbine generators and effectively supports and fixes the single wind turbine generator; the lattice support structure includes a lattice beam.
Furthermore, the power grades and specifications of the wind turbine generators of the rhombic multi-wind-wheel basic unit are consistent; or the power levels are different, and the optimal selection is carried out according to the actual aerodynamic characteristics and the actual load characteristics.
Furthermore, the connecting module consists of truss connecting units; the truss connecting units are rectangular bearing units formed by welding angle steel and steel plates, and are connected through hinges; the connecting module is fixed at the bottom of the cabin in a cross shape, the center of the cross is positioned on a vertical line of the gravity center of the cabin so as to better form integral support for the wind turbine generator, and the truss type supporting structure can be extended towards the left direction and the right direction through the hinge.
Furthermore, at the rhombic node, the truss girder is connected with a connecting module of a single wind turbine generator to form a support; when the truss girders are connected from top to bottom, the engine rooms of the single wind turbine generator are fastened and connected by bolts; and supporting connecting pieces are arranged at the root positions of the included angles of the truss girders at the acute angles of the rhombus.
The invention also comprises a rhombic structure modularized multi-wind wheel wind power generator set which is composed of 1-6 groups of rhombic multi-wind wheel basic units; the rhombic structure modularized multi-wind-wheel wind turbine generator set is formed by a plurality of groups of rhombic multi-wind-wheel basic units according to a certain arrangement rule; the rhombic multi-wind wheel basic units are connected through truss beams, and the single wind turbine generators of different rhombic multi-wind wheel basic units are connected through the truss beams with strong bending resistance to form a connecting and supporting structure; when more than one rhombic multi-wind-wheel basic unit is arranged, a reinforced integral supporting structure is arranged; the reinforced integral supporting structure is integrally triangular, the upper parts of the truss girders on two sides of the top end are connected with the single wind turbine generator at the center of the tower frame through the connecting module, the lower parts of the truss girders are respectively connected with the single wind turbine generators on the left side and the right side through the connecting module, and the horizontal cross beam at the bottom end is connected with the yaw supporting module of the tower frame and the single wind turbine generators on the left side and the right side; the yaw support module is fixed below the tower foundation and consists of a rotary bearing and a rotary support connecting piece.
Furthermore, the angle of the rhombus is selected and set according to the aerodynamic characteristics, the gravity center and the structure of the rhombic structure modular multi-wind-wheel wind turbine set, and the distance between the single wind turbine sets of the rhombic structure modular multi-wind-wheel basic unit is selected and set according to the aerodynamic characteristics of the rhombic structure modular multi-wind-wheel wind turbine set.
Further, the certain arrangement rule includes:
1 rhombic structure modular multi-wind wheel wind turbine generator set is formed by 1 group of rhombic multi-wind wheel basic units; or 2 groups of the rhombic multi-wind-wheel basic units are symmetrically distributed in the horizontal direction to form 1 rhombic structure modularized multi-wind-wheel wind power generator set; or on the basis of the symmetrical layout of 2 groups of the rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added above the middle parts of the 2 groups of rhombic multi-wind-wheel basic units, and 1 rhombic-structure modularized multi-wind-wheel wind power generator set is formed by 3 groups of rhombic multi-wind-wheel basic units; or on the basis of 3 groups of rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added in the direction of the truss girder extension line of the middle 1 group of rhombic multi-wind-wheel basic units and the left 1 group of rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added in the direction of the truss girder extension line of the middle 1 group of rhombic multi-wind-wheel basic units and the right 1 group of rhombic multi-wind-wheel basic units, and 1 rhombic structure modularized multi-wind-wheel wind generating set is formed by 5 groups of rhombic multi-wind-wheel basic units; or on the basis of the symmetrical layout of 5 groups of the rhombic multi-wind-wheel basic units, 1 group of the rhombic multi-wind-wheel basic units are additionally arranged in the extension line direction of the truss girder above the middle 2 groups of the rhombic multi-wind-wheel basic units, and 1 multi-wind-wheel wind power generator set is formed by 6 groups of the rhombic multi-wind-wheel basic units.
Furthermore, the structure layout, the overall balance, the gravity center, the supporting connection and the structure of the rhombic multi-wind-wheel basic unit of the modularized multi-wind-wheel wind turbine generator set with the rhombic structure are expanded.
Furthermore, based on the integral supporting structure of the rhombic structure modularized multi-wind-wheel wind turbine generator set, integral yawing is performed through a yawing module used for connecting a tower frame with the wind turbine generator set at the center and a yawing module used for reinforcing connection between the truss girder and the tower frame; and the single wind turbine generator set in the multiple groups of rhombic multi-wind-wheel basic units independently changes the pitch.
Furthermore, the overall yawing function of the rhombic structure modularized multi-wind-wheel wind turbine generator set is realized by the aid of power matching between the rhombic multi-wind-wheel basic units with different left and right sides and the single wind turbine generator set inside the rhombic multi-wind-wheel basic units.
The invention has at least the following beneficial effects:
(1) The invention adopts the idea of rhombic structure modularization, provides a thought of modularized arrangement of multi-wind-wheel wind generating sets with a rhombic multi-wind-wheel structure as a basic unit, 1 rhombic basic unit is formed by 4 wind generating sets distributed at 4 corners of the rhombic multi-wind-wheel structure, and the optimal rhombic structure angle and the distance between different wind generating sets are designed.
(2) The invention relates to a modular expansion and consideration of various factors, which comprises the steps of realizing the expansion and the arrangement of a multi-wind wheel wind turbine generator set by taking a rhombic multi-wind wheel structure as a basic unit, comprehensively considering factors such as generating efficiency, center of gravity, balance, a supporting and connecting structure and the like by combining a certain arrangement rule, and designing a reasonable combination scheme of a plurality of rhombic basic units according to the target power level and the application scene of the whole machine.
(3) The multi-wind-wheel wind turbine generator set has the advantages that the multi-wind-wheel wind turbine generator set forms an ultra-large wind turbine generator set by combining a plurality of wind turbine generators with relatively low power, the problems of overlarge part size and weight of the ultra-large wind turbine generator set in a conventional route can be solved, the problem of high difficulty in designing, manufacturing, transporting, installing and maintaining large equipment and parts can be greatly relieved, meanwhile, the multi-wind-wheel wind turbine generator set can improve the whole generating capacity to a certain extent, reduce the gravity center and arrange the weight, so that the cost of the whole machine is reduced, and a novel solution can be provided for the requirements of continuously increasing the capacity of an offshore wind turbine generator set, and quickly balancing and lowering the cost.
Drawings
Fig. 1 is a schematic structural diagram of a rhombic multi-wind wheel basic unit disclosed by the invention;
FIG. 2 is a schematic structural diagram of a multi-wind wheel wind turbine generator set composed of 1 group of rhombic multi-wind wheel basic units according to the invention;
FIG. 3 is a schematic structural diagram of a multi-wind wheel wind turbine generator set composed of 3 groups of diamond multi-wind wheel basic units according to the present invention;
FIG. 4 is a schematic structural diagram of a multi-wind wheel wind turbine generator set composed of 5 groups of rhombic multi-wind wheel basic units according to the invention;
fig. 5 (a), 5 (b), 5 (c) and 5 (d) are schematic diagrams of a connecting module, a truss girder and a supporting/fixing module of the multi-wind turbine generator set according to the invention;
FIG. 6 is a schematic view of a yaw structure of a multi-wind-wheel wind turbine generator set according to the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings, which are provided for illustration and explanation, and are not intended to limit the present invention.
As shown in fig. 1, the rhombic multi-wind wheel basic unit of the present invention includes a rhombic truss type supporting structure, 4 wind turbine generators distributed at four corners of the rhombic truss type supporting structure, and a supporting/fixing module connecting the truss type supporting structure and a single wind turbine generator; the supporting/fixing module is a connecting module arranged at the bottom of the engine room of a single wind turbine generator, is used for connecting the truss type supporting structures of different single wind turbines and effectively supporting and fixing the single wind turbines; the lattice support structure includes a lattice beam.
The included angle between the left corner truss girder and the right corner truss girder is preferably 60 degrees, the included angle between the upper corner truss girder and the lower corner truss girder is preferably 120 degrees, and the included angles can be optimally selected and set by combining the aerodynamic characteristics, the gravity center, the structure and other factors of the multi-wind turbine set.
The power grade of a single wind turbine is preferably 100kW-3MW, mature existing wind turbines can be adopted and mainly comprise 3-blade wind wheels and engine rooms, and the single wind turbine has a blade pitch control function and does not have a yaw control function.
The truss type supporting structure is connected with a single wind turbine generator by the supporting/fixing module; the distance between the wind turbines in the rhombic multi-wind-wheel basic unit can be selected and set to be a reasonable value according to factors such as aerodynamic characteristics, and the distance is preferably 0.1-0.2D, wherein D is the diameter of an impeller of a single wind turbine. The power grades and specifications of the wind turbine generators of the rhombic multi-wind wheel basic unit are consistent; or the power levels are different, and the optimal selection is carried out according to the actual aerodynamic characteristics and the actual load characteristics. But generally, symmetrical distribution is selected, the power levels of the left wind turbine generator set and the right wind turbine generator set are kept consistent, and the power levels of the upper wind turbine generator set and the lower wind turbine generator set are kept consistent; when the power grades of the internal wind turbine generators are different, the included angle of the diamond structure can be further optimized and selected.
At the rhombic node, the truss girder is connected with a connecting module of a single wind turbine generator to form a support; when the truss girders are connected from top to bottom, the engine rooms of the single wind turbine generator are fastened and connected by bolts; and supporting connecting pieces are arranged at the root positions of the included angles of the truss girders at the acute angles of the rhombus.
As shown in fig. 2, 3 and 4, 1 group, 3 groups and 5 groups of the rhombic multi-wind-wheel basic units shown in fig. 1 form a rhombic structure modular multi-wind-wheel wind turbine generator set, the rhombic multi-wind-wheel basic units are connected through a truss girder, and the truss girder is consistent with the truss girder in the rhombic multi-wind-wheel basic units shown in fig. 1.
The rhombic structure modularized multi-wind wheel wind turbine generator set is composed of 1-6 groups of rhombic multi-wind wheel basic units; the rhombic structure modular multi-wind wheel wind turbine generator set is formed by a plurality of groups of rhombic multi-wind wheel basic units according to a certain arrangement rule; the rhombic multi-wind wheel basic units are connected through truss beams, and the single wind turbine generators of different rhombic multi-wind wheel basic units are connected through the truss beams with strong bending resistance to form a connecting and supporting structure; when more than one rhombic multi-wind-wheel basic unit is arranged, a reinforced integral supporting structure is arranged; the reinforced integral supporting structure is integrally triangular, the upper parts of the truss girders on two sides of the top end are connected with the single wind turbine generator at the center of the tower frame through the connecting module, the lower parts of the truss girders are respectively connected with the single wind turbine generators on the left side and the right side through the connecting module, and the horizontal cross beam at the bottom end is connected with the yaw supporting module of the tower frame and the single wind turbine generators on the left side and the right side; the yaw support module is fixed below the tower foundation and consists of a rotary bearing and a rotary support connecting piece.
The arrangement mode of the rhombic multi-wind wheel basic units in the rhombic structure modularized multi-wind wheel wind turbine generator set is as follows: 1 rhombic structure modular multi-wind wheel wind turbine generator set is formed by 1 group of rhombic multi-wind wheel basic units; or 2 groups of the rhombic multi-wind-wheel basic units are symmetrically distributed in the horizontal direction to form 1 rhombic structure modularized multi-wind-wheel wind turbine set; or on the basis of the symmetrical layout of 2 groups of the rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added above the middle parts of the 2 groups of rhombic multi-wind-wheel basic units, and 1 rhombic-structure modularized multi-wind-wheel wind power generator set is formed by 3 groups of rhombic multi-wind-wheel basic units; or on the basis of 3 groups of rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added in the direction of the truss girder extension line of the rhombic multi-wind-wheel basic unit in the middle 1 group and the rhombic multi-wind-wheel basic unit in the left 1 group, 1 group of rhombic multi-wind-wheel basic units are added in the direction of the truss girder extension line of the rhombic multi-wind-wheel basic unit in the middle 1 group and the rhombic multi-wind-wheel basic unit in the right 1 group, and 1 rhombic structure modularized multi-wind-wheel wind generator set is formed by 5 groups of rhombic multi-wind-wheel basic units; or on the basis of the symmetrical layout of 5 groups of the rhombic multi-wind-wheel basic units, 1 group of the rhombic multi-wind-wheel basic units are additionally arranged in the extension line direction of the truss girder above the middle 2 groups of the rhombic multi-wind-wheel basic units, and 1 multi-wind-wheel wind power generator set is formed by 6 groups of the rhombic multi-wind-wheel basic units.
Specifically, as shown in fig. 2, 1 group of rhombic multi-wind-wheel basic units form 1 multi-wind-wheel wind turbine generator set, a single wind turbine generator set at the lowest part of the rhombic multi-wind-wheel basic unit is connected with a tower, and a yaw module for realizing the integral yaw of the rhombic structure modularized multi-wind-wheel generator set is designed between the wind turbine generator set and the tower.
On the basis of fig. 2, as shown in fig. 3, 3 groups of rhombic multi-wind-wheel basic units form a rhombic structure modular multi-wind-wheel wind turbine generator set, 1 group of rhombic multi-wind-wheel basic units are respectively added at the left lower part and the right lower part of the rhombic multi-wind-wheel basic unit truss girder extension line direction of fig. 1, the rhombic multi-wind-wheel basic units are connected through the truss girder, and the multi-wind-wheel wind turbine generator set also adopts an integral yaw mode.
On the basis of fig. 3, as shown in fig. 4, 5 groups of rhombic multi-wind-wheel basic units form a multi-wind-wheel wind turbine generator set, 1 group of rhombic multi-wind-wheel basic units are respectively added at the left upper side and the right upper side of the extension line direction of the truss girder of the uppermost rhombic multi-wind-wheel basic unit in fig. 3, the rhombic multi-wind-wheel basic units are connected through the truss girder, and the multi-wind-wheel wind turbine generator set also adopts an integral yaw mode.
Further, on the basis of fig. 4, 1 group of rhombic multi-wind-wheel basic units can be added in the middle-upper direction of the truss girder extending line direction of the 2 groups of rhombic multi-wind-wheel basic units at the top, and 1 multi-wind-wheel wind power generator set is formed by 6 groups of rhombic multi-wind-wheel basic units.
Furthermore, the angle of the rhombus is selected and set according to the aerodynamic characteristics, the gravity center and the structure of the rhombic structure modular multi-wind-wheel wind turbine set, and the distance between the single wind turbine sets of the rhombic structure modular multi-wind-wheel basic unit is selected and set according to the aerodynamic characteristics of the rhombic structure modular multi-wind-wheel wind turbine set.
Furthermore, factors such as structural layout, overall balance, center of gravity, support connection and the like can be considered, and the expansion is continued by taking the rhombic multi-wind-wheel structure with more than 6 groups as a basic unit.
As shown in fig. 5 (a), fig. 5 (b), fig. 5 (c), and fig. 5 (d), the present invention is a connection module at the bottom of a single wind turbine, a truss girder used for the interior of a rhombic multi-wind-wheel basic unit, a supporting/fixing module connected with the single wind turbine, a truss girder used for the supporting connection between different rhombic multi-wind-wheel basic units, and a truss girder used for reinforcing the overall supporting structure of the wind turbine.
As shown in fig. 5 (a), the bottom of the nacelle of a single wind turbine is provided with a connecting module, which is used for connecting different wind turbine supporting trusses with each other and effectively supporting the wind turbine; the connecting module consists of truss connecting units, the truss connecting units are connected by using hinges, and the truss connecting units are rectangular bearing units formed by welding preferred angle steels and steel plates; the connecting module is fixed at the bottom of the nacelle in a cross shape, the center of the cross is preferably on the vertical line of the center of gravity of the nacelle, the wind turbine generator is better supported integrally, and the truss supporting structure can be extended towards the left direction and the right direction through the hinge.
As shown in fig. 5 (b), different wind turbines inside the rhombic multi-wind-wheel basic unit are connected by adopting a truss structure, the truss structure is composed of truss connection units, and at a rhombic node, a truss beam is connected with a connection module of a single wind turbine to form a support; secondly, when the truss girder and the single wind turbine generator set are connected from top to bottom, bolts are required to be adopted for tightening connection between the truss girder and the single wind turbine generator set; and secondly, supporting connecting pieces are arranged at the included angle roots of different truss beams at the diamond acute angle positions of the different truss beams.
As shown in fig. 5 (c), different rhombus multi-wind-wheel basic units are connected by adopting a truss structure with strong bending resistance, different rhombus multi-wind-wheel basic units form a connecting and supporting structure through two truss beams, and the connecting rule is the same as that of the truss beams in the rhombus multi-wind-wheel basic units.
As shown in fig. 5 (d), more than one rhombic multi-wind-wheel basic unit needs to reinforce the integral supporting structure of the wind turbine; consolidate whole bearing structure and be triangle-shaped, the truss girder of top both sides is connected through linking module with the single wind turbine generator system at pylon department center, and the truss girder of the bottom left and right sides passes through linking module with the single wind turbine generator system of the left and right sides respectively and is connected to bottom horizontal beam with the driftage of pylon supports the module and the single wind turbine generator system of the left and right sides is connected. The yaw support module is fixed below the tower foundation and preferably consists of a slewing bearing and a slewing support connecting piece.
As shown in fig. 6, the yawing structure for yawing the whole multi-wind turbine generator set according to the present invention is used for a yawing module in which the tower is connected to a single wind turbine generator set at the center, and a yawing module in which the truss beam of the rhombic structure modular multi-wind turbine generator set integral supporting structure is connected to the tower.
The overall yawing function of the multi-wind wheel wind turbine generator set can be realized by the aid of power matching between different rhombic multi-wind wheel basic units on the left side and the right side and a single unit in the multi-wind wheel basic units;
the variable pitch control function of the rhombic structure modularized multi-wind-wheel wind generating set is realized by independently changing the pitch of a single wind generating set in a plurality of groups of rhombic multi-wind-wheel basic units.
As described above, the following technical means can be selected by those skilled in the art based on the basic embodiment of the present invention:
preferably, the power level of a single wind turbine in the rhombic multi-wind-wheel basic unit is preferably 100kW to 3MW, but the power level is not limited to the power range, and the power level of the single wind turbine can be set as appropriate according to specific situations.
Preferably, each unit in the rhombic multi-wind-wheel basic unit can be selected to have consistent power grade and specification, can also be selected to have different power grades, and can be optimally selected according to actual aerodynamic characteristics, load characteristics and the like.
Preferably, the rotating directions of the single wind turbine generators in the multi-wind-wheel wind turbine generator set can be kept consistent, and part of the generators can be designed to rotate reversely according to actual aerodynamic characteristics and the like.
Finally, it should be noted that: the above description is only a basic embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement and the like made within the idea and method of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. A many wind wheels of rhombus basic unit, its characterized in that: the system comprises a rhombic truss type supporting structure, 4 wind turbine generators distributed at four corners of the rhombic truss type supporting structure, and a supporting/fixing module for connecting the truss type supporting structure with a single wind turbine generator; the supporting/fixing module is a connecting module arranged at the bottom of an engine room of a single wind turbine generator, is used for connecting different single wind turbines with the truss type supporting structure and effectively supports and fixes the single wind turbine generator; the lattice support structure includes a lattice beam.
2. A rhombus multi-rotor base unit according to claim 1, characterized in that: the power grades and specifications of the wind turbine generators of the rhombic multi-wind wheel basic unit are consistent; or the power levels are different, and the optimal selection is carried out according to the actual aerodynamic characteristics and the actual load characteristics.
3. The rhombus multi-rotor base unit of claim 1, characterized in that: the connecting module consists of truss connecting units; the truss connecting units are rectangular bearing units formed by welding angle steel and steel plates, and are connected through hinges; the connecting module is fixed at the bottom of the cabin in a cross shape, the center of the cross is positioned on a vertical line of the gravity center of the cabin, so that the wind turbine generator is better supported integrally, and the truss type supporting structure can be extended towards the left direction and the right direction through the hinge.
4. A rhombus multi-rotor base unit according to claim 1, characterized in that: at the rhombic node, the truss girder is connected with a connecting module of a single wind turbine generator to form a support; when the truss girders are connected from top to bottom, the engine rooms of the single wind turbine generator are fastened and connected by bolts; and supporting connecting pieces are arranged at the root positions of the included angles of the truss girders at the acute angles of the rhombus.
5. A diamond-structured modular multi-wind-wheel wind power plant using the diamond-structured multi-wind-wheel base units of any of claims 1 to 4, characterized in that: the rhombic structure modular multi-wind wheel wind turbine generator set is composed of 1-6 groups of rhombic multi-wind wheel basic units; the rhombic structure modularized multi-wind-wheel wind turbine generator set is formed by the rhombic multi-wind-wheel basic units according to the arrangement rule; the rhombic multi-wind wheel basic units are connected through truss beams, and the single wind turbine generators of different rhombic multi-wind wheel basic units are connected through the truss beams with strong bending resistance to form a connecting and supporting structure; when more than one rhombic multi-wind-wheel basic unit is arranged, a reinforced integral supporting structure is arranged; the reinforced integral supporting structure is integrally triangular, the upper parts of the truss girders on two sides of the top end are connected with the single wind turbine generator at the center of the tower frame through the connecting module, the lower parts of the truss girders are respectively connected with the single wind turbine generators on the left side and the right side through the connecting module, and the horizontal cross beam at the bottom end is connected with the yaw supporting module of the tower frame and the single wind turbine generators on the left side and the right side; the yaw support module is fixed below the tower foundation and consists of a slewing bearing and a slewing support connecting piece.
6. The diamond configured modular multi-wind turbine generator system of claim 5, wherein: the angle of the rhombus is selected and set according to the aerodynamic characteristics, the gravity center and the structure of the rhombus-structure modular multi-wind-wheel wind turbine generator set, and the distance between the single wind turbine generators of the rhombus-structure modular multi-wind-wheel basic unit is selected and set according to the aerodynamic characteristics of the rhombus-structure modular multi-wind-wheel wind turbine generator set.
7. The modular multi-wind-wheel wind-driven generator set with a diamond structure according to claim 5, wherein: the arrangement rule comprises the following steps:
1 rhombic structure modular multi-wind wheel wind turbine generator set is formed by 1 group of rhombic multi-wind wheel basic units; or 2 groups of the rhombic multi-wind-wheel basic units are symmetrically distributed in the horizontal direction to form 1 rhombic structure modularized multi-wind-wheel wind turbine set; or on the basis of the symmetrical layout of 2 groups of the rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added above the middle parts of the 2 groups of rhombic multi-wind-wheel basic units, and 1 rhombic-structure modularized multi-wind-wheel wind power generator set is formed by 3 groups of rhombic multi-wind-wheel basic units; or on the basis of 3 groups of rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added in the direction of the truss girder extension line of the middle 1 group of rhombic multi-wind-wheel basic units and the left 1 group of rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are added in the direction of the truss girder extension line of the middle 1 group of rhombic multi-wind-wheel basic units and the right 1 group of rhombic multi-wind-wheel basic units, and 1 rhombic structure modularized multi-wind-wheel wind generating set is formed by 5 groups of rhombic multi-wind-wheel basic units; or on the basis of the symmetrical layout of 5 groups of rhombic multi-wind-wheel basic units, 1 group of rhombic multi-wind-wheel basic units are additionally arranged in the extension line direction of the truss girder above the middle 2 groups of rhombic multi-wind-wheel basic units, and 1 multi-wind-wheel wind generating set is formed by 6 groups of rhombic multi-wind-wheel basic units.
8. The modular multi-wind-wheel wind-driven generator set with a diamond structure according to claim 5, wherein: and expanding the structure according to the structural layout, the overall balance, the gravity center and the supporting connection of the rhombic structure modularized multi-wind-wheel wind turbine generator set and the structure of the rhombic multi-wind-wheel basic unit.
9. The modular multi-wind-wheel wind-driven generator set with a diamond structure according to claim 5, wherein: based on the integral supporting structure of the rhombic structure modularized multi-wind-wheel wind turbine generator set, integral yawing is performed through a yawing module used for connecting a tower frame with the wind turbine generator set at the center and a yawing module used for reinforcing the connection between the truss girder and the tower frame; and the single wind turbine generator set in the multiple groups of rhombic multi-wind-wheel basic units independently changes the pitch.
10. The modular multi-wind-wheel wind-driven generator set with a diamond structure according to claim 5, wherein: the integral yaw function of the rhombic structure modularized multi-wind wheel wind generating set is realized by the aid of power matching between rhombic multi-wind wheel basic units different in left and right sides and single wind generating sets inside the rhombic multi-wind wheel basic units.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2623890A (en) * | 2022-10-25 | 2024-05-01 | Myriad Wind Energy Systems Ltd | Modular wind power generation assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2623890A (en) * | 2022-10-25 | 2024-05-01 | Myriad Wind Energy Systems Ltd | Modular wind power generation assembly |
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