CN203515969U - Composite material fan blade based on gridding stringer structure - Google Patents
Composite material fan blade based on gridding stringer structure Download PDFInfo
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- CN203515969U CN203515969U CN201320429982.7U CN201320429982U CN203515969U CN 203515969 U CN203515969 U CN 203515969U CN 201320429982 U CN201320429982 U CN 201320429982U CN 203515969 U CN203515969 U CN 203515969U
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- stringer
- covering
- wind turbine
- fan blade
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Abstract
The utility model relates to a composite material fan blade based on a gridding stringer structure, and belongs to the technical field of wind driven generator blades. The fan blade comprises a shell body and a shear web. The shell body comprises a root portion, a clamping core structure, a main beam cap, a front edge and a rear edge. The shear web is pasted on the outer surface of the main beam cap. The root portion is arranged at the leftmost portion of the shell body and is used for being connected with peripheral equipment. The main component of the shell body is of the clamping core structure. The main beam cap is used for supporting the center of the clamping core structure, and the edges of the clamping core structure are supported by the front edge and the rear edge respectively. A panel and a core material interface in the shell body of the blade are replaced to construct a simple traditional light composite material clamping core structure layer, the shear resisting performance, the compression resisting performance, the impact resisting performance and the load transmitting capacity of the clamping core structure are improved with low weight cost through the gridding stringer structure design, and then the environmental loading level generated by structural damage can be improved.
Description
Technical field
The utility model relates to the composite wind turbine blade based on grid stringer structure, relates in particular to a kind of wind-driven generator composite material blade, belongs to blade of wind-driven generator technical field.
Background technique
Composite wind turbine blade is the critical component of wind-power generating system, directly affects the performance of whole system.At present, blades of large-scale wind driven generator agent structure is generally comprised of housing, shear web and other medium and small parts etc.Wherein, blade shell is generally comprised of pressure side (being called for short PS face) housing and suction surface (being called for short SS face) housing, and each face-piece body is composited by beam cap composite layer, root composite layer, front and rear edge composite layer and light composite material sandwich structure layer etc.In running, the various power load that are subject in a blade shell dignity are generally by effective transmission of aerodynamic configuration face structure (being mainly light composite material sandwich structure), then most of concentrating acts on the beam cap position of its blade shell, under normal conditions, by beam cap composite layer, be sent to root composite layer again, finally by root connecting bolt, be passed to the positions such as blade connection bearing, and then guarantee harmony and the validity of blade integral structure.Therefore, blade shell is the main load-bearing component of blade (being mainly beam cap and root), also be one of main load transmitting components of blade (being mainly light composite material sandwich structure), its load bearing is very complicated, be the combination of multiple load, the intensity and toughness performance of itself and resistance to environmental reliability performance just seem extremely important.
In prior art, what in blade shell, light composite material sandwich structure layer generally adopted is conventional composite materials cork wood and foamed sandwich structure, its panel and core Interface Construction are simple, deficiency is: (1) on the one hand, in blade shell, traditional lightweight Composite Sandwich construction layer is being manufactured link, transportation stores link, assembling link, and in During Process of Long-term Operation, because more easily producing unsticking equivalent damage under various such environmental effects conditions, and this damage has easily the hidden danger that further expands/expand in using running for a long time from now on, structure long-term behaviour is relatively difficult to ensure or structure stress unstability critical value reduces, therefore its long-time running reliability is poor.(2) on the other hand, when larger in design load, and traditional blade shell light composite material sandwich structure layer is difficult to bear its design performance while requiring, in order to guarantee desired structure performance, the general employing of prior art comprises that the material rate that improves covering and beam cap requires (as design adopts more high performance fibre reinforced materials), increases skin panel thickness, adds the design size of crossbeam cap or on the basis of girder cap (abbreviation girder), increase the measures such as floor stringer cap (being called for short auxiliary beam) composite layer, achieves the goal.Along with wind power generating set (especially offshore wind turbine) is increasingly to large MW class future development, the length of fan blade and width equidimension are continuing to increase, the design load of fan blade is also in rapid increase, and the designability of prior art and structure efficiency will highlight on the low side.
Model utility content
Object of the present utility model is to overcome the above-mentioned deficiency of prior art, composite wind turbine blade based on grid stringer structure is provided, and this structure blade has advantages of that structure light wt is efficient, designability is strong, anti-damage ability strong, long-time running good reliability.
The purpose of this utility model is achieved through the following technical solutions.
Composite wind turbine blade based on grid stringer structure of the present utility model, the profile of this fan blade is aerodynamic configuration; This fan blade comprises housing and shear web; The shape of housing is consistent with the aerodynamic configuration of fan blade; Fan blade adopts composite material;
Described housing comprises root, sandwich structure, girder cap, leading edge and trailing edge;
Shear web is bonded on the outer surface of girder cap;
The leftmost side of housing is root, for being connected with peripheral unit; The chief component of housing is sandwich structure; The central position of sandwich structure is supported with girder cap; The edge of sandwich structure supports with leading edge and trailing edge respectively;
Described sandwich structure comprises covering and light-weight filler;
Covering is the panel that contains grid and stringer;
Light-weight filler is foam core material or cork wood core; Fluting on light-weight filler is corresponding with the grid of covering and stringer.
In covering, stringer is parallel or perpendicular to blade axial direction.
In covering, grid is square, rectangle, rhombus, trapezoidal or triangle.
In covering, grid integral body is the grid structure that single shape or various shape mix.
In covering, stringer is Unidirectional Fiber-reinforced Composite.
Shear web is I-shaped or square shape.
The grid stringer structure of fan blade is that galss fiber reinforced resin based composites, carbon fiber enhancement resin base composite material or above-mentioned fiber hybrid strengthen polymer matrix composites etc.; Its polymer matrix composites are polyurethane-base composite material, vinyl esters based composites, epoxy resin-base composite material or its modified resin based composites etc.
Beneficial effect
The utility model has designed composite material grid stringer and has strengthened light-weight filler sandwich structure piece, to substitute panel and the simple traditional lightweight Composite Sandwich of core Interface Construction construction layer in blade shell, this grid stringer structural design has improved shear behavior, compression performance and impact property and the load transmission capacity of sandwich structure with less weight cost, and then can improve the environmental load rank that structural damage (as unsticking, layering and unstability etc.) produces.
The utility model fan blade has stronger design flexibility, and the variation of material, physical dimension and technique by polymer matrix composites grid stringer can obtain higher structure effect with less quality cost to greatest extent.
The utility model fan blade has stronger anti-damage expansion capability, and Composites Lattice Structure design can effectively stop or reduce product structure defect or damage (as unsticking, layering etc.) degree of expansion and expansion rate in use.
The utility model fan blade has the features such as structure light wt is efficient, designability is strong, anti-damage ability strong, long-time running good reliability.
Accompanying drawing explanation
Fig. 1 is blade integral schematic diagram;
Fig. 2 is shell construction schematic diagram;
Fig. 3 is the x-x schematic cross-section of Fig. 1;
Fig. 4 a, Fig. 4 b are respectively the multi-form enlarged diagram in two kinds, I place of Fig. 3;
Fig. 5 is stressed-skin construction schematic diagram;
Fig. 6 is light-weight filler structural representation;
Fig. 7 is stringer and position view thereof.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Composite wind turbine blade based on grid stringer structure, the material selection composite material of this fan blade, comprises housing and shear web 5; Described housing comprises root 1, sandwich structure 2, girder cap 3, leading edge 4-1 and trailing edge 4-2.Its manufacture process is first on independent mould, to manufacture respectively girder cap 3 and shear web 5, then by designing requirement, at PS face mould tool and SS face mould tool upper berth, put root 1, sandwich structure 2, girder cap 3, leading edge 4-1 and trailing edge 4-2 that shaping operation is good well co-curing respectively, finally PS housing, shear web 5 matched moulds together with SS housing is bonded together.
As shown in Fig. 4 a and Fig. 4 b, described sandwich structure 2 is the light core sandwich structure of grid stringer structural reinforcing, comprises covering 6 and light-weight filler 7; The sizing grid containing in covering 6 and (or) stringer size can be consistent, also can be inconsistent.
As shown in Figure 5, covering 6 is the panel of composite material grid stringer structural reinforcing.
As shown in Figure 6, light-weight filler 7 is foam core material or the cork wood with the fluting with covering 6 grid stringer structural correspondences.
As shown in Figure 7, in covering 6, stringer can be to be parallel to blade axial direction, also can be perpendicular to blade axial direction.
Described sandwich structure 2 is a kind of or its combination in foam sandwich construction or cork wood sandwich structure.
In described sandwich structure 2, grid is square, rectangle, rhombus, trapezoidal or triangle.Grid can integral body be the grid structure of single shape, can be also the grid structure that various shape is mixed to form; In described sandwich structure 2, stringer is mainly Unidirectional Fiber-reinforced Composite.
Described shear web 5 is I-shaped or square shape.
In the present embodiment, polymer matrix composites grid stringer enhancing covering/panel is galss fiber reinforced resin based composites grid, carbon fiber enhancement resin base composite material grid, can also be that above-mentioned fiber hybrid strengthens polymer matrix composites grid etc. simultaneously.In the present embodiment, polymer matrix composites grid strengthens covering/panel and can also comprise polyurethane-base, vinyl ester group or epoxy resin-base composite material etc. for polymer matrix composites, also comprises composite material that the modification kind of above-mentioned resin is manufactured etc. simultaneously.
In the present embodiment, grid stringer structural design makes fan blade housing have stronger design flexibility, by material, physical dimension and the direction of polymer matrix composites grid and stringer and the variation of technique, can with less quality cost, obtain higher structure effect to greatest extent.
In addition, grid stringer structural design makes blade shell have stronger anti-damage ability, and grid can effectively stop or reduce product structure defect or damage (as unsticking, layering etc.) degree of expansion and expansion rate in use.And composite material grid can improve shear behavior, compression performance and the impact property of foamed sandwich structure, and then can improve the environmental load rank that structural damage (as unsticking, layering and unstability etc.) produces.
Embodiment 1
As shown in figures 1 and 3, the composite wind turbine blade based on grid stringer structure, the profile of this fan blade is aerodynamic configuration; This fan blade comprises housing and shear web 5; The shape of housing is consistent with the aerodynamic configuration of fan blade; Fan blade adopts composite material;
As shown in Figure 2, described housing comprises root 1, sandwich structure 2, girder cap 3, leading edge 4-1 and trailing edge 4-2;
The leftmost side of housing is root 1, for being connected with peripheral unit; The chief component of housing is sandwich structure 2; The central position of sandwich structure 2 is supported with girder cap 3; The edge of sandwich structure 2 supports with leading edge 4-1 and trailing edge 4-2 respectively;
As shown in Figure 4, described sandwich structure 2 comprises covering 6 and light-weight filler 7;
As shown in Figure 5, covering 6 is the grid that contains and the panel of stringer; Grid and stringer in the same size, as left hand view in Fig. 4, the not of uniform size of grid and stringer causes, as right part of flg in Fig. 4.
As shown in Figure 6, light-weight filler 7 is foam core material or cork wood core; Fluting on light-weight filler 7 is corresponding with grid and the stringer of covering 6.
In covering 6, stringer 8 is parallel to blade axial direction, as schemed above in Fig. 7;
In covering 6, stringer 8 is perpendicular to blade axial direction, as schemed below in Fig. 7;
In covering 6, grid is square.
In covering 6, grid integral body is the grid structure of single shape.
In covering 6, stringer is Unidirectional Fiber-reinforced Composite.
Claims (7)
1. the composite wind turbine blade based on grid stringer structure, is characterized in that: the profile of this fan blade is aerodynamic configuration; This fan blade comprises housing and shear web (5); The shape of housing is consistent with the aerodynamic configuration of fan blade; Fan blade adopts composite material;
Described housing comprises root (1), sandwich structure (2), girder cap (3), leading edge (4-1) and trailing edge (4-2); Shear web (5) is bonded on the outer surface of girder cap (3);
The leftmost side of housing is root (1), for being connected with peripheral unit; The chief component of housing is sandwich structure (2); The girder cap for central position (3) of sandwich structure (2) supports; The edge of sandwich structure (2) uses respectively leading edge (4-1) and trailing edge (4-2) to support;
Described sandwich structure (2) comprises covering (6) and light-weight filler (7);
The panel of covering (6) for containing grid and stringer;
Light-weight filler (7) is foam core material or cork wood core.
2. the composite wind turbine blade based on grid stringer structure according to claim 1, is characterized in that: in covering (6), stringer is parallel to blade axial direction.
3. the composite wind turbine blade based on grid stringer structure according to claim 1, is characterized in that: in covering (6), stringer is perpendicular to blade axial direction.
4. the composite wind turbine blade based on grid stringer structure according to claim 1, is characterized in that: in covering (6), grid is square, rectangle, rhombus, trapezoidal or triangle.
5. the composite wind turbine blade based on grid stringer structure according to claim 1, is characterized in that: in covering (6), grid integral body is the grid structure of single shape.
6. the composite wind turbine blade based on grid stringer structure according to claim 1, is characterized in that: in covering (6), grid is the grid structure that various shape is mixed to form.
7. the composite wind turbine blade based on grid stringer structure according to claim 1, is characterized in that: in covering (6), stringer is Unidirectional Fiber-reinforced Composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320429982.7U CN203515969U (en) | 2013-07-18 | 2013-07-18 | Composite material fan blade based on gridding stringer structure |
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| CN201320429982.7U CN203515969U (en) | 2013-07-18 | 2013-07-18 | Composite material fan blade based on gridding stringer structure |
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| CN203515969U true CN203515969U (en) | 2014-04-02 |
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| CN201320429982.7U Expired - Lifetime CN203515969U (en) | 2013-07-18 | 2013-07-18 | Composite material fan blade based on gridding stringer structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398582A (en) * | 2015-11-13 | 2016-03-16 | 中国人民解放军国防科学技术大学 | Skin, bulkhead integrated unmanned aerial vehicle body and manufacturing method of bulkhead integrated unmanned aerial vehicle body |
| CN105508142A (en) * | 2014-10-15 | 2016-04-20 | 株洲时代新材料科技股份有限公司 | Multi-girder structure large size wind power blade and production method thereof |
| CN107636303A (en) * | 2015-05-28 | 2018-01-26 | Lm Wp 专利控股有限公司 | Wind turbine blade with trailing edge compartment |
| CN109747861A (en) * | 2017-11-02 | 2019-05-14 | 波音公司 | The system and method for stringer for making in site minimally tool processes |
| CN109790817A (en) * | 2016-07-19 | 2019-05-21 | Lm风力发电国际技术有限公司 | Wind turbine blade and correlation technique with flat dorsal segment |
| US10828843B2 (en) | 2017-03-16 | 2020-11-10 | General Electric Company | Shear webs for wind turbine rotor blades and methods for manufacturing same |
| CN115008847A (en) * | 2022-05-18 | 2022-09-06 | 张长增 | Three-dimensional composite plate shell structure, aircraft, wind power blade shell and manufacturing method |
| WO2022236724A1 (en) * | 2021-05-12 | 2022-11-17 | 远景能源有限公司 | Fan blade provided with reinforcing strips and manufacturing method therefor |
-
2013
- 2013-07-18 CN CN201320429982.7U patent/CN203515969U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508142A (en) * | 2014-10-15 | 2016-04-20 | 株洲时代新材料科技股份有限公司 | Multi-girder structure large size wind power blade and production method thereof |
| CN105508142B (en) * | 2014-10-15 | 2018-06-05 | 株洲时代新材料科技股份有限公司 | A kind of more girder construction large scale wind electricity blades and its production method |
| CN107636303A (en) * | 2015-05-28 | 2018-01-26 | Lm Wp 专利控股有限公司 | Wind turbine blade with trailing edge compartment |
| CN107636303B (en) * | 2015-05-28 | 2021-05-25 | Lm Wp 专利控股有限公司 | Wind turbine blade with trailing edge spacer portion |
| CN105398582A (en) * | 2015-11-13 | 2016-03-16 | 中国人民解放军国防科学技术大学 | Skin, bulkhead integrated unmanned aerial vehicle body and manufacturing method of bulkhead integrated unmanned aerial vehicle body |
| CN105398582B (en) * | 2015-11-13 | 2018-06-19 | 中国人民解放军国防科学技术大学 | A kind of covering, bulkhead integration unmanned aerial vehicle body and preparation method thereof |
| CN109790817A (en) * | 2016-07-19 | 2019-05-21 | Lm风力发电国际技术有限公司 | Wind turbine blade and correlation technique with flat dorsal segment |
| CN109790817B (en) * | 2016-07-19 | 2022-03-01 | Lm风力发电国际技术有限公司 | Wind turbine blade with flat back section and related method |
| US10828843B2 (en) | 2017-03-16 | 2020-11-10 | General Electric Company | Shear webs for wind turbine rotor blades and methods for manufacturing same |
| CN109747861A (en) * | 2017-11-02 | 2019-05-14 | 波音公司 | The system and method for stringer for making in site minimally tool processes |
| CN109747861B (en) * | 2017-11-02 | 2024-01-05 | 波音公司 | System and method for in situ manufacturing minimally engineered stringers |
| WO2022236724A1 (en) * | 2021-05-12 | 2022-11-17 | 远景能源有限公司 | Fan blade provided with reinforcing strips and manufacturing method therefor |
| CN115008847A (en) * | 2022-05-18 | 2022-09-06 | 张长增 | Three-dimensional composite plate shell structure, aircraft, wind power blade shell and manufacturing method |
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Granted publication date: 20140402 |