CN203463240U - Vortex generator, vortex generator unit plate and wind turbine blade with vortex generators - Google Patents
Vortex generator, vortex generator unit plate and wind turbine blade with vortex generators Download PDFInfo
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- CN203463240U CN203463240U CN201320556192.5U CN201320556192U CN203463240U CN 203463240 U CN203463240 U CN 203463240U CN 201320556192 U CN201320556192 U CN 201320556192U CN 203463240 U CN203463240 U CN 203463240U
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Abstract
The utility model relates to a vortex generator which is used for being arranged on a wind turbine blade of a wind generating set so as to delay separation of air flow from the surface of the wind turbine blade and improve aerodynamic performance of the wind turbine blade. The vortex generators are fixed at positions at a distance of 20 percent to 30 percent of a chord length with the front edge of the wind turbine blade and are arranged in pairs, wherein each pair of vortex generators are arranged in an inverted V shape; an included angle of less than 15 degrees is formed between each vortex generator and the incoming direction of the air flow; a side angle of less than 90 degrees is formed between each vortex generator and a mounting surface on which the vortex generator is positioned. By the arrangement of the vortex generators on the wind turbine blade of the wind generating set, in the operating process of the wind turbine blade, the air flow generates vortexes at the positions of the vortex generators to transfer energy to a boundary layer and a flow field of the boundary layer in the adverse pressure gradient can be continuously attached to the surface of the blade without being separated after obtaining the additional energy, so that a stalling angle is prevented from being decreased and aerodynamic performance of the wind turbine blade is improved.
Description
Technical field
The utility model relates to a kind of device that can improve fan blade of wind generating set aeroperformance, and the fan blade of wind generating set that includes this device.
Background technique
Existing wind turbine blade for large-scale wind generating set is all the wind generator set blade special airfoil that adopts large thickness, and in order to increase the structural rigidity of blade, the thickness of root aerofoil profile can reach 60% of chord length.For the special-purpose blade that adopts thick wing type, in the running of wind wheel blade, when air-flow passes through, easy and blade surface generation segregation phenomenon, when especially wind speed is larger, this phenomenon can be very obvious.When air-flow produces separation, can make the blade stall angle of attack reduce, maximum lift coefficient reduces, can increase the resistance of wind wheel blade like this, reduce lift, cause blade to shift to an earlier date stall and asymmetric stall, reduce the utilization ratio to wind energy of fan blade of wind generating set.
In order to overcome above-mentioned defect, Chinese invention patent CN102536632A has announced a kind of wind turbine blade with vortex generator, specifically, on the suction surface of blade, to be positioned with a plurality of integrated vortex generators, specifically in the moulding blade mold main body of design wind wheel blade, on blade mold, also form vortex generator chamber, vortex generator chamber is configured to the defining surface opening to die main body.For this purpose, vortex generator chamber is such as trequetrous 3D shape, and vortex generator chamber can limit the difformity of vortex generator.So, when making blade, on the suction surface of blade, be integrally formed some vortex generators.
The working principle of vortex generator as shown in Figure 1, on wind wheel blade, arrange after vortex generator, the air of flowing through on wind turbine blade forms boundary layer, boundary layer can be separated at the outer surface of blade, when air-flow passes through blade surface and contacts with vortex generator, therefore air-flow can produce eddy current, and turns to the surface that more approaches blade, by using vortex generator can postpone the separated of boundary layer and blade outside face.
But when the vortex generator in the prior art arranges, between the leading edge of itself and blade surface and blade, substantially in vertical state, the effect of vortex generator place eddy generation is limited, therefore need to improve.
In addition, the preparation process of moulding vortex generator in prior art, when blade body Mold Making, to make vortex generator chamber simultaneously, therefore, different natural wind conditions for different wind energy turbine set, may need to design different blade bodies, simultaneously according to actual working environment, need to be equipped with difformity at the diverse location place of blade body, specification, the vortex generator of quantity, thereby same blade body mould cannot adapt to multiple wind energy turbine set, blade manufacturer all needs " making to measure " at every turn, redesign required body die, for this large-sized workpiece of wind wheel blade, designing and making cost is very high, the method that can say prior art installation vortex generator is very dumb, versatility is low, high cost.Secondly, at some field of wind-force, use blade after the regular period, or in different seasons, during wind condition generation significant change, also need the vortex generator of blade surface to do some fine settings, such as the trim process of luffing angle, deflection direction, mounting point, quantity etc., to obtain meeting most the blade structure of the wind condition of place wind energy turbine set.Obviously, the wind wheel blade structure of above-mentioned prior art, cannot accomplish these.
Model utility content
The defect existing for above-mentioned prior art, one of the purpose of this utility model is to provide the vortex generator that a kind of wind wheel blade surface is used, can postpone the separated of flow boundary layer air and blade surface, reduce the resistance of vortex generator body to air-flow, further to improve the efficiency of wind power generating set simultaneously.
Another object of the present utility model is to provide vortex generator cell board structure, it is for being arranged on blade surface, in the time will adjusting to the vortex generator of blade surface, without the body die that redesigns vortex generator, only vortex generator cell board need be combined as required, is arranged on pre-position.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of vortex generator, be arranged on the wind wheel blade of wind power generating set, it is for delaying the separated of air-flow and wind wheel blade surface, described vortex generator is fixed on the chord length position apart from this wind wheel blade leading edge 20%-30%, and described vortex generator arranges in pairs, described every pair of vortex generator is all mutually " eight " set up of character patt ern, each vortex generator and air-flow carry out flow path direction to be formed with to be less than the angle of 15 °, form with the surface of attachment face the lateral angle that is less than 90 °.
Preferably, this lateral angle is between 75 ° to 85 °
Preferably, described vortex generator is triangle or tetragonal sheet structure.
Preferably, the height of described vortex generator is between 3 centimetres to 7 centimetres.
The utility model also provides a kind of vortex generator cell board, and it comprises that a flat board and n are to being located at the vortex generator on this flat board, and described vortex generator is above-mentioned vortex generator, and wherein n is natural number.
Preferably, described vortex generator and described flat board are formed in one.
Preferably, described vortex generator is bonding or be welded on this flat board with structure glue.
The utility model separately provides a kind of wind wheel blade that the wind power generating set of some above-mentioned vortex generators is installed.
The utility model also provides a kind of wind wheel blade that the wind power generating set of at least one above-mentioned vortex generator cell board is installed.
Preferably, when above-mentioned vortex generator cell board is installed on wind wheel blade, be that the first degree of depth of polishing in this pre-position, wind wheel blade surface is 1 millimeter to 2 millimeters depression, then cell board be located in this depression, then with structure glue, both be adhered to one.
The beneficial effects of the utility model are, vortex generator of the present utility model except with come flow path direction at an angle, between itself and attachment face, also there is a lateral angles, by this vortex generator, make wind wheel blade air-flow in running at vortex generator place, produce eddy current, energy is passed to boundary layer, boundary layer flow field in adverse pressure gradient is obtained can continue after additional-energy to be attached to the surface of blade and unlikely separation, thereby avoided stalling angle to reduce, reduced resistance, increased lift coefficient, finally delayed the separation of air-flow, to reach the effect that promotes wind wheel blade working efficiency.This vortex generator and attachment face are a lateral angles, more can improve the effect that vortex generator makes air-flow produce eddy current, weaken the negative effect that vortex generator brings blade.For example, the wind energy turbine set that wind speed interval is 9 meter per second to 15 meter per seconds of take is example, compares with the wind wheel blade that the vortex generator of existing structure is installed, and installs the total output of wind power generating set after vortex generator of the present utility model additional and has improved 2% to 3%.Because China is vast in territory, the situation of wind resource is complicated, cause China's wind energy turbine set environment with abroad especially European countries compare, exist larger difference, therefore, just need to, according to the actual conditions of the different wind energy turbine set of China, the mounting point of vortex generator, difformity, specification, quantity be redesigned, also may need according to doing some fine settings period, season etc., such as luffing angle, deflection direction, mounting point, quantity etc. done trim process simultaneously.By vortex generator cell board of the present utility model, can reach easily the object that redesigns and finely tune.
Due to vortex generator cell board of the present utility model, when mounted, first on wind wheel blade, polish a degree of depth and be the depression of 1 millimeter to 2 millimeters, can cave in the position at place, degree of depth of polishing, heeling condition, shape, bearing of trend etc. reach fine setting object by selection.In addition, the some vortex generators on vortex generator cell board can adopt first separately moulding, more bonding or be soldered to dull and stereotyped upper formation, or form flat board and vortex generator by integrated mode simultaneously.During assembling, described each vortex generator cell board can splice and combine use, so its flexibility ratio, versatility strengthen greatly, effectively saves the Design and manufacture cost of wind wheel blade.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of vortex generator.
Fig. 2 is that in the utility model, vortex generator is arranged on the structural representation on wind wheel blade.
Fig. 3 A-3C is difform vortex generator in the utility model.
Fig. 4 is a structural representation of vortex generator cell board in the utility model.
Fig. 5 is another structural representation of vortex generator cell board in the utility model.
1, vortex generator
2, wind wheel blade
3, vortex generator cell board
4, flat board.
Ф vortex generator and the angle that carrys out flow path direction
The lateral angle of θ vortex generator and attachment face.
Embodiment
Shown in accompanying drawing, embodiment of the present utility model is elaborated.
As shown in Fig. 2 and Fig. 3 A-3C, for a kind of mode of execution of the present utility model, on the wind wheel blade 2 of wind power generating set, be provided with several vortex generators 1, for delaying the separated of air-flow and wind wheel blade surface, this vortex generator 1 location is arranged on the chord length position apart from this wind wheel blade 2 leading edge 20%-30%, vortex generator 1 arranges in pairs, is mutually "eight" shape and puts.Each vortex generator and air-flow carry out flow path direction to be formed with to be less than the angle Ф of 15 °, form with the surface of attachment face the lateral angle θ that is less than 90 °, be preferably between 75 ° to 85 °; Lateral angles be two vortex generators 1 of arranging in pairs mutually away from side and the angle between attachment face, if attachment face is curved surface, the tangent plane that is chosen as this curved surface corresponding position is done reference.The structure of each vortex generator 1 is as shown in Fig. 3 A-Fig. 3 C, can be the laminar body of triangle, irregular quadrilateral or trapezium structure.Due to, arranging equally also of vortex generator 1 can produce resistance in the process of wind wheel blade 2 operations, thereby the height of vortex generator 1 is better is chosen between 3 centimetres to 5 centimetres, both can control airflow breakaway by vortex generator 1, and also can excessively not increase the resistance of wind wheel blade 2 in the time of operation.
On wind wheel blade, 2 while installing vortex generator 1, can directly by structure glue, vortex generator 1 be bonded in to the predetermined position of wind wheel blade 2, also can be before vortex generator 1 be installed, in advance according to measuring and calculating and empirical value, first on wind wheel blade 2, polish the depression of 1 millimeter to 2 millimeters, again according to different wind energy turbine set environment, by the polish setting angle of thickness, inclination and vortex generator 1 of depression of adjustment, finally vortex generator 1 is arranged on wind wheel blade 2.
Described vortex generator 1 is installed on wind wheel blade 2, controls and delays airflow breakaway, improves the aeroperformance of blade, and from integral body, improves the efficiency of wind power generating set.
Fig. 4 is another embodiment of the present utility model, comprises that a flat board 4 and n are to being located at the vortex generator 1 on flat board, and described vortex generator 1 is identical with the first embodiment's vortex generator, is just arranged in pairs in advance on a flat board 4.Wherein n is natural number, as shown in Figure 4 be two pairs, i.e. n=2.Flat board 4 is with described 2 pairs of vortex generators 1 to form a vortex generator cell board 3, and each vortex generator cell board 3 can be manufactured separately and sell, and also can use and be installed on wind wheel blade 2 separately or after splicing.With respect to the first embodiment, due to after vortex generator cell board 3 arranged vortex generator 1 in pairs, then be installed on wind wheel blade 2, more can save operation, improve installation efficiency.When above-mentioned vortex generator cell board 3 is installed on wind wheel blade, also be that the first degree of depth of polishing in this surperficial pre-position of wind wheel blade 2 is 1 millimeter to 2 millimeters depression, then the flat board of cell board 34 integral body are located in depression, then with structure glue, both are adhered to one.By cell board 3 structures, can overcome the first embodiment's deficiency, the first embodiment's deficiency is, during each installation vortex generator 1, all to note angle of inclination, direction, luffing angle, lateral angles, the paired problems such as symmetrical position that arrange, therefore installation efficiency is very low, and easily on wind wheel blade 2, polish many unwanted recess.
The benefit that polishing is caved in is to make dull and stereotyped 4 to cave in, and reduces dull and stereotyped 4 parts of exposing, and reduces resistance, increases degree of friction simultaneously, increases the combination fastness that flat board 4 is incorporated into wind wheel blade 2 surfaces; In addition, can also be by processing true dip direction, the bearing of trend of sunk surface, luffing angle, the slanted angle of fine setting vortex generator 1.
The length of the wind wheel blade 2 that Large Scale Wind Farm Integration adopts is now very long, what have has even arrived 75m, existing integrated mode is made in the method for blade body and vortex generator, once the position that vortex generator 1 is installed is improper, can only again manufacture wind wheel blade mould, wastes time and energy, simultaneously, also cannot adjust flexibly, the versatility Di， manufacturing enterprise cost of mould is too high.
In technique scheme of the present utility model, because the volume of vortex generator 1 and vortex generator cell board 3 is little, easily manufactured, with low cost, even one-body molded with mould, the designing and making cost of mould is also very low, and same specification mould can repeated multiple timesly utilize, or can mould the vortex generator cell board of batch production unified specification.For example the mould of vortex generator cell board 3, can produce with this mould the cell board 3 of a batch, then installation quantity as required, and combination is installed on wind wheel blade 2.When mounted, only need to be by polishing depression in advance on wind wheel blade 2, just can realize vortex generator 1 position and the large adjustment of angle or inching on wind wheel blade, to make vortex generator 1 can be applicable to the wind wheel blade of different wind energy turbine set, greatly save manufacture cost.
The prismatic shape of available technology adopting three-dimensional, to increase the intensity of vortex generator, be blown off avoiding, but three-dimensional prism shape can increase resistance; If adopt integral forming process to make vortex generator cell board 3, the vortex generator 1 of sheet also can meet requirement of strength, and, process and use conveniently, be conducive to adjust.
Further, after can splicing mutually, re-use between vortex generator cell board 3 wherein, or every vortex generator cell board 3 is arranged on respectively desired position, multiple cell boards 3 are arranged in a row.Wherein, vortex generator 1 be formed in one with dull and stereotyped 4 or vortex generator 1 bonding or be welded on this flat board 4 with structure glue.This flat board 4 is preferably straight stripe board, and thickness is 1-2 millimeter.
The wind energy turbine set that wind speed interval is 9 meter per second to 15 meter per seconds of take is example, compares with the wind wheel blade of vortex generator not being installed or existing other vortex generators being installed, and installs the total output of wind power generating set after vortex generator additional and has improved 2% to 3%.
Just the above, be only preferred embodiment of the present utility model, when not limiting the utility model practical range with this; Therefore, all simple equivalences of doing according to the utility model patent application document content change and modify, and all should still belong to the scope that the utility model patent contains.
Claims (10)
1. a vortex generator, for being arranged on the wind wheel blade suction surface of wind power generating set, to delay the separated of air-flow and wind wheel blade surface, described vortex generator is fixed on the chord length position apart from this wind wheel blade leading edge 20%-30%, and arrange in pairs, it is characterized in that: described every pair of vortex generator is all mutually " eight " set up of character patt ern, each vortex generator and air-flow carry out flow path direction to be formed with to be less than the angle of 15 °, form with the attachment face at place the lateral angle that is less than 90 °.
2. vortex generator as claimed in claim 1, is characterized in that: this lateral angle is between 75 ° to 85 °.
3. vortex generator as claimed in claim 1, is characterized in that: described vortex generator is triangle or tetragonal sheet structure.
4. vortex generator as claimed in claim 1, is characterized in that: the height of described vortex generator is between 3 centimetres to 7 centimetres.
5. a vortex generator cell board, comprises that a flat board and n are to being located at the vortex generator on this flat board, and described vortex generator is the vortex generator as described in claim 1-4 any one, and wherein n is natural number.
6. vortex generator cell board as claimed in claim 5, is characterized in that: described vortex generator and described flat board are formed in one.
7. vortex generator cell board as claimed in claim 5, is characterized in that: described vortex generator is bonding or be welded on this flat board with structure glue.
8. a fan blade of wind generating set, its surface is provided with the vortex generator as described in claim 1-4 any one.
9. a fan blade of wind generating set, its surface is provided with the vortex generator cell board as described in claim 5-7 any one.
10. fan blade of wind generating set as claimed in claim 9, it is characterized in that: when described vortex generator cell board is installed on wind wheel blade, that the first degree of depth of polishing in this pre-position, wind wheel blade surface is 1 millimeter to 2 millimeters depression, described vortex generator cell board is located in this depression, then with structure glue, both is adhered to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556192.5U CN203463240U (en) | 2013-09-09 | 2013-09-09 | Vortex generator, vortex generator unit plate and wind turbine blade with vortex generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556192.5U CN203463240U (en) | 2013-09-09 | 2013-09-09 | Vortex generator, vortex generator unit plate and wind turbine blade with vortex generators |
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| Publication Number | Publication Date |
|---|---|
| CN203463240U true CN203463240U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320556192.5U Expired - Lifetime CN203463240U (en) | 2013-09-09 | 2013-09-09 | Vortex generator, vortex generator unit plate and wind turbine blade with vortex generators |
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| CN (1) | CN203463240U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298738A (en) * | 2014-06-17 | 2016-02-03 | 西门子能量股份有限公司 | Pressure side stall strip for wind turbine blade |
| CN106051822A (en) * | 2015-04-13 | 2016-10-26 | 安萨尔多能源瑞士股份公司 | Vortex generating arrangement and gas turbine with such vortex generating arrangement |
| CN106321347A (en) * | 2016-11-11 | 2017-01-11 | 安徽新力电业科技咨询有限责任公司 | Wind driven generator eddy generator |
| CN114876858A (en) * | 2022-04-20 | 2022-08-09 | 江苏大学镇江流体工程装备技术研究院 | Vortex generator applied to centrifugal pump |
-
2013
- 2013-09-09 CN CN201320556192.5U patent/CN203463240U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298738A (en) * | 2014-06-17 | 2016-02-03 | 西门子能量股份有限公司 | Pressure side stall strip for wind turbine blade |
| CN106051822A (en) * | 2015-04-13 | 2016-10-26 | 安萨尔多能源瑞士股份公司 | Vortex generating arrangement and gas turbine with such vortex generating arrangement |
| CN106051822B (en) * | 2015-04-13 | 2020-11-03 | 安萨尔多能源瑞士股份公司 | Vortex generation arrangement and gas turbine with such an arrangement |
| CN106321347A (en) * | 2016-11-11 | 2017-01-11 | 安徽新力电业科技咨询有限责任公司 | Wind driven generator eddy generator |
| CN106321347B (en) * | 2016-11-11 | 2021-12-10 | 安徽新力电业科技咨询有限责任公司 | Wind turbine vortex generator |
| CN114876858A (en) * | 2022-04-20 | 2022-08-09 | 江苏大学镇江流体工程装备技术研究院 | Vortex generator applied to centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191120 Address after: 100176 no.1609, floor 13, building 67, yard 2, Jingyuan North Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: Beijing Xinye New Energy Technology Co.,Ltd. Address before: 100176, No. 67, building two, Garden North Street, Beijing Economic Development Zone Patentee before: Zhuang Yuexing |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |