CN102332044A - Optimization design method of blades of wind turbine based on topology optimization of structure - Google Patents
Optimization design method of blades of wind turbine based on topology optimization of structure Download PDFInfo
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- CN102332044A CN102332044A CN201110276492A CN201110276492A CN102332044A CN 102332044 A CN102332044 A CN 102332044A CN 201110276492 A CN201110276492 A CN 201110276492A CN 201110276492 A CN201110276492 A CN 201110276492A CN 102332044 A CN102332044 A CN 102332044A
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Abstract
The invention discloses an optimization design method of blades of a horizontal-axis wind turbine based on the topology optimization of the structure, each blade comprises a web plate (3), spar caps (3, 5) and a coating (1), and the design method comprises the following steps: adopting the existing blade design method to determine an aerodynamic shape parameter and the structural parameters of the blades; adopting the topology optimization method to perform opening design on the web plates and the spar caps of the structure; determining the initial design positions, the number and the sizes of openings through optimization calculation; and checking the strength, the rigidity and the fatigue of the structure of the blades obtained by the topology optimization, and further performing structural adjustment according to the check result so as to ensure that the blades have good structural performances. Through the design method of arranging openings on the web plates and the spar caps, the strength, the rigidity and the anti-fatigue performance of the structure of the blades can be kept, the weight of the blades is simultaneously reduced, not only is the cost of the blades reduced, but also the reducing of the loads of the blades is benefited.
Description
Technical field
The present invention relates to mechanical industry technical field of wind power generation, relate in particular to a kind of structural Topology Optimization method for designing of horizontal-shaft wind turbine blade.
Background technology
Along with global warming is on the rise, CO
2The pressure that reduces discharging strengthens, and fossil energy is in short supply simultaneously, and renewable and clean energy resource more and more receives the favor of each major country.Wind energy has that reserves are big, wide, the cleanliness without any pollution of distributing, integrated cost is lower and in degradation advantage down, be one of very promising generation mode.Wind energy receives the generally attention of countries in the world as the strategic position of future source of energy supply important component part.
In order to realize the scale utilization of wind energy, reduce the Wind Power Utilization cost, the wind-powered electricity generation unit just develops towards large scale, powerful direction.Because the increase of size, leaf weight also often increase thereupon.The increase of leaf weight causes the increase of blade cost, the increase that also brings blade loading simultaneously.Along with wind-powered electricity generation unit development trend of large-scale, this trend is also more obvious.
Horizontal axis wind-driven generator group wind wheel blade mostly is made up of web, beam cap and covering etc. at present.Fig. 1 is the overall appearance structural representation of the pneumatic equipment blades made of prior art.Fig. 2 is the pneumatic equipment blades made beam cap of prior art and the structural representation of web.Like Fig. 1, shown in 2, the main load bearing component that web 4 and upper and lower beam cap 3,5 are blade, most of load of bearing blade; Covering 1 mainly works to keep how much aerofoil profile.
Because the said structure of the horizontal-shaft wind turbine blade of prior art causes leaf quality overweight, the increase of blade cost also brings the increase of blade loading simultaneously, thereby has influence on the overall operation efficiency of wind power generating set.
Therefore, the above-mentioned shortcoming and defect to the large scale wind power machine blade of prior art plays beam cap, the web structure of main carrying effect and carries out topology optimization design to pneumatic equipment blades made, to reduce leaf weight, improves Blade Properties, has crucial meaning.
Summary of the invention
The technical matters that (one) will solve
To the overweight shortcoming and defect of the large scale wind power machine leaf quality of prior art; The present invention proposes a kind of Optimization Design based on the theoretical horizontal-shaft wind turbine blade of topological optimization; Blade according to this method for designing manufacturing; Can ensure that blade is pneumatic, in the structural behaviour, reduce leaf weight and load, to adapt to the developing direction that blade maximizes.
(2) technical scheme
According to an aspect of the present invention; A kind of Optimization Design of the horizontal-shaft wind turbine blade based on structural Topology Optimization is provided; Said blade comprises covering (1), web (4) and beam cap (3,5); Said beam cap (3,5) comprises several perforates (6,7,8) with web (4), it is characterized in that this Optimization Design may further comprise the steps:
1) according to designing requirement, adopt existing blade design method, confirm aerodynamic configuration parameter and the web (4) of blade, the initial configuration parameter of beam cap (3,5), as the initial designs before optimizing;
2) adopt the finite element numerical analysis method, the phyllome chip architecture that is designed is carried out finite element grid divide, confirm its boundary condition according to blade actual bearer situation;
3) be distributed as the optimal design variable with what beam cap (3,5) and web (4) were gone up quality of materials, under the prerequisite that ensures the blade load-bearing capacity, the reduction leaf weight is an optimization aim;
4) through adopting general Topology Optimization Method; Blade construction under above-mentioned optimization aim and the variable is optimized analysis; According to analysis result; And under the situation of considering blade processing technique, web (4) and beam cap (3,5) are carried out the perforate design, confirm the preliminary position of opening and the bore size of web (4) and beam cap (3,5);
5) completing steps 1) to step 4), obtain the blade construction that primary design is accomplished;
6) according to designing requirement, the blade construction that primary design is accomplished carries out intensity, rigidity and tired the check, according to check result, the blade construction of primary design is adjusted, and obtains to guarantee that blade has the final structure form of satisfactory texture performance;
Implement through above step, accomplish the topology optimization design process of blade, in design process, the aerodynamic configuration of blade is not adjusted, keep with step 1) in consistent, adhere to specification to guarantee its aeroperformance.
Preferably; Be employed in beam cap (3,5) and web (4) and go up the topological optimization of the mode implementation structure of perforate; Analyze through optimizing, realize the adjustment to perforate (6,7,8) structure, the adjustment parameter comprises position of opening, bore size on web (4), the beam cap (3,5).
Preferably, said beam cap comprises upper beam cap (3) and underbeam cap (5).
Preferably, said perforate comprises upper beam cap perforate (6), web perforate (7) and underbeam cap perforate (8).
Preferably, said perforate (6,7,8) is a rectangle opening.
Number, the size of preferably, said perforate (6,7,8) and the position of arranging are confirmed according to optimizing with check result.
(3) beneficial effect
The present invention compared with prior art has following significantly substantive features and remarkable advantage:
1) plays the web and the beam cap of main carrying effect in the blade, adopt topological optimization technology, carry out the perforate design, when ensureing load-bearing capacity, reduced weight;
2) can be according to load and intensity distributions situation; In the position of design phase flexible design perforate, quantity, size etc.; Guarantee the reasonable distribution of blade strength, rigidity, quality, improve anti-load-carrying ability, the anti-fatigue performance of blade and optimize the blade construction kinematic behavior.
Description of drawings
Fig. 1 is the overall appearance structural representation of the pneumatic equipment blades made of prior art.
Fig. 2 is the pneumatic equipment blades made median ventral plate of prior art and the structural representation of beam cap.
Fig. 3 is blade beam cap and web structure synoptic diagram according to optimization method provided by the present invention obtained.
Wherein, 1. covering, 2. blade interior structure, 3. upper beam cap, 4. web, 5. underbeam cap, 6. upper beam cap perforate, 7. web perforate, the 8. perforate of underbeam cap.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, to further explain of the present invention.
In one exemplary embodiment of the present invention, the primary structure of horizontal-shaft wind turbine blade comprises web 4, upper and lower beam cap 3,5 and covering 1.
In the present embodiment, perforate is set at web 4 and last underbeam cap 3,5 upper edge blade radials.Fig. 3 is the structural representation of embodiment of the invention horizontal-shaft wind turbine blade web, beam cap.As shown in Figure 3, this perforate can be rectangle opening.The number of rectangle opening, size and the position of arranging are confirmed according to optimizing with check result.Through on web, beam cap, rational perforate being set,, when reaching the loss of weight purpose, kept blade girder that good load-bearing capacity is still arranged through this perforate design.
Topological optimization is a kind of of structure optimization, and topological optimization is an optimization objects with the space distribution of material, through topological optimization, can be implemented in the preferred plan that finds distribution of material in the certain designed space.The research field of topological optimization mainly is divided into non-individual body topological optimization and discrete topology topological optimization, and this instance adopts the variable density method in the non-individual body Topology Optimization Method to be optimized design.According to the load condition of blade under static and dynamic operation condition; The design object of setting structure and design variable; Adopt the finite element numerical method to carry out the structure optimization iterative computation; Confirm the going or staying of unit in the design space, the unit that remains promptly constitutes final topological project, is final optimal design structure in this example.
Novel horizontal-shaft wind turbine blade pass is crossed following steps design in the present embodiment:
1) according to designing requirement, adopt existing blade design method, confirm aerodynamic configuration parameter and web 4, the upper beam cap 3 of blade, the structural parameters of underbeam cap 5, as the initial designs before optimizing;
2) adopt the finite element numerical analysis method, the phyllome chip architecture that is designed is carried out finite element grid divide, confirm its boundary condition according to blade actual bearer situation;
3) on above, underbeam cap 3,5 and the web 4 quality of materials be distributed as the optimal design variable, under the prerequisite with guarantee blade load-bearing capacity, the reduction leaf weight is an optimization aim;
4) through adopting general Topology Optimization Method; Blade construction under above-mentioned optimization aim and the variable is optimized analysis; According to analysis result; And under the situation of considering factors such as blade processing technique, adopt web 4 and upper and lower beam cap 3,5 are carried out the perforate design, confirm the preliminary position of opening and the bore size of web 4 and upper and lower beam cap 3,5;
5) completing steps 1) to step 4), obtain the blade construction that primary design is accomplished;
6) according to designing requirement, the blade construction that primary design is accomplished carries out intensity, rigidity and tired the check, according to check result, the blade construction of primary design is adjusted, and obtains to guarantee that blade has the final structure form of satisfactory texture performance.
Implement through above step, accomplish the topology optimization design process of blade, in design process, the aerodynamic configuration of blade is not adjusted, keep with step 1) in consistent, adhere to specification to guarantee its aeroperformance.
Above-described specific embodiment has carried out further explain to the object of the invention, technical scheme and beneficial effect.Institute it should be understood that the above is merely specific embodiment of the present invention, is not limited to the present invention, and is all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. Optimization Design based on the horizontal-shaft wind turbine blade of structural Topology Optimization; Said blade comprises covering (1), web (4) and beam cap (3,5); Said beam cap (3,5) comprises several perforates (6,7,8) with web (4); It is characterized in that this Optimization Design may further comprise the steps:
1) according to designing requirement, adopt existing blade design method, confirm aerodynamic configuration parameter and the web (4) of blade, the initial configuration parameter of beam cap (3,5), as the initial designs before optimizing;
2) adopt the finite element numerical analysis method, the phyllome chip architecture that is designed is carried out finite element grid divide, confirm its boundary condition according to blade actual bearer situation;
3) be distributed as the optimal design variable with what beam cap (3,5) and web (4) were gone up quality of materials, under the prerequisite that ensures the blade load-bearing capacity, the reduction leaf weight is an optimization aim;
4) through adopting general Topology Optimization Method; Blade construction under above-mentioned optimization aim and the variable is optimized analysis; According to analysis result; And under the situation of considering blade processing technique, web (4) and beam cap (3,5) are carried out the perforate design, confirm the preliminary position of opening and the bore size of web (4) and beam cap (3,5);
5) completing steps 1) to step 4), obtain the blade construction that primary design is accomplished;
6) according to designing requirement, the blade construction that primary design is accomplished carries out intensity, rigidity and tired the check, according to check result, the blade construction of primary design is adjusted, and obtains to guarantee that blade has the final structure form of satisfactory texture performance;
Implement through above step, accomplish the topology optimization design process of blade, in design process, the aerodynamic configuration of blade is not adjusted, keep with step 1) in consistent, adhere to specification to guarantee its aeroperformance.
2. Optimization Design according to claim 1; It is characterized in that; Be employed in beam cap (3,5) and web (4) and go up the topological optimization of the mode implementation structure of perforate; Analyze through optimizing, realize the adjustment to perforate (6,7,8) structure, the adjustment parameter comprises position of opening, bore size on web (4), the beam cap (3,5).
3. Optimization Design according to claim 1 and 2 is characterized in that, said beam cap comprises upper beam cap (3) and underbeam cap (5).
4. Optimization Design according to claim 1 and 2 is characterized in that, said perforate comprises upper beam cap perforate (6), web perforate (7) and underbeam cap perforate (8).
5. Optimization Design according to claim 1 and 2 is characterized in that, said perforate (6,7,8) is a rectangle opening.
6. Optimization Design according to claim 1 and 2 is characterized in that, number, the size of said perforate (6,7,8) and the position of arranging are confirmed according to optimizing with check result.
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| CN102663212A (en) * | 2012-05-09 | 2012-09-12 | 江苏科技大学 | Optimized design method for ship anchoring machine seat |
| CN103196689A (en) * | 2013-03-26 | 2013-07-10 | 中国科学院工程热物理研究所 | Static force test result correcting method of horizontal shaft wind turbine blade |
| CN103616717A (en) * | 2013-11-06 | 2014-03-05 | 中国石油天然气集团公司 | Vibroseis vibrator flat plate and making manufacture thereof |
| CN106021827A (en) * | 2016-07-14 | 2016-10-12 | 湖北工业大学 | Topological design method for inner structure of wind turbine blade in consideration of aerodynamic load |
| CN110298096A (en) * | 2019-06-21 | 2019-10-01 | 中科国风科技有限公司 | A kind of fan blade of wind generating set girder position optimization design method |
| CN111523267A (en) * | 2020-04-21 | 2020-08-11 | 重庆邮电大学 | Fan main shaft structure optimization method based on parameterized finite element model |
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| CN104143016B (en) * | 2014-07-02 | 2017-12-12 | 哈尔滨工业大学 | A kind of optimization method of the severe cold area Architectural Atrium based on dry monsoon environmental simulation |
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| CN102663212A (en) * | 2012-05-09 | 2012-09-12 | 江苏科技大学 | Optimized design method for ship anchoring machine seat |
| CN102663212B (en) * | 2012-05-09 | 2014-01-15 | 江苏科技大学 | Optimized design method for ship anchoring machine seat |
| CN103196689A (en) * | 2013-03-26 | 2013-07-10 | 中国科学院工程热物理研究所 | Static force test result correcting method of horizontal shaft wind turbine blade |
| CN103196689B (en) * | 2013-03-26 | 2015-08-05 | 中国科学院工程热物理研究所 | A kind of Blades For Horizontal Axis Wind static(al) test result modification method |
| CN103616717A (en) * | 2013-11-06 | 2014-03-05 | 中国石油天然气集团公司 | Vibroseis vibrator flat plate and making manufacture thereof |
| CN106021827A (en) * | 2016-07-14 | 2016-10-12 | 湖北工业大学 | Topological design method for inner structure of wind turbine blade in consideration of aerodynamic load |
| CN110298096A (en) * | 2019-06-21 | 2019-10-01 | 中科国风科技有限公司 | A kind of fan blade of wind generating set girder position optimization design method |
| CN111523267A (en) * | 2020-04-21 | 2020-08-11 | 重庆邮电大学 | Fan main shaft structure optimization method based on parameterized finite element model |
| CN111523267B (en) * | 2020-04-21 | 2023-05-23 | 重庆邮电大学 | Fan main shaft structure optimization method based on parameterized finite element model |
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