CN104234925A - Foldable dual-row coaxial-blade wind driven generator device - Google Patents
Foldable dual-row coaxial-blade wind driven generator device Download PDFInfo
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- CN104234925A CN104234925A CN201410412531.1A CN201410412531A CN104234925A CN 104234925 A CN104234925 A CN 104234925A CN 201410412531 A CN201410412531 A CN 201410412531A CN 104234925 A CN104234925 A CN 104234925A
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- blade
- folding
- seat
- blades
- power generation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a foldable dual-row coaxial-blade wind driven generator device. The foldable dual-row coaxial-blade wind driven generator device comprises two rows of blade assemblies, wherein each row of blade assemblies comprises two two-segment foldable blades and a blade folding device; main blades are fixed-pitch blades; the roots of the main blades are hinged to a wheel hub through lug connecting seats; the other positions of the main blades are connected with the blade folding devices; the two rows of blades are arranged crossly and orthogonally after being unfolded; the foldable blades are oblique foldable blades; the power generation rate can be adjusted; the two rows of blades are positioned on the front part and the back part of a fan tower respectively, are connected to the same main shaft through a front wheel hub and a back wheel hub of a fan, and rotate synchronously in the same direction; the folding and unfolding of the blades can be controlled by folding driving devices. The device provided by the invention has the characteristics of simple structure, balanced stress, realization of complete folding and unfolding of the blades, easiness and convenience in controlling, high power generation efficiency and the like, and is a wind power generation device which is suitable for ship wind power, offshore oil platform wind power and the like.
Description
Technical field
The present invention relates to blades of large-scale wind driven generator structure, belong to field of wind power equipment.
Background technique
Wind energy resources is worldwide very abundant, and there are considerable wind energy content in nearly all area and country.In recent years oil crisis takes place frequently, and petroleum reserves, the coal reserves of countries in the world all will be exhausted in centuries, and therefore, the country such as China, the U.S., Britain, Spain is all gradually by the middle of attention diversion to the development and utilization of new energy.Wind energy, as one of the important component part of renewable energy sources, while causing researcher's extensive concern, have also been obtained the support energetically of national governments.
From the seventies in last century to the modern times, world's wind-powered electricity generation achieves alarming development.World's wind-powered electricity generation gross generation of 1996 is only 12.2TWh; After 10 years, within 2008, namely whole world wind power generation capacity reaches about 219TWh, accounts for 1.1% of world gross generation 20261TWh then, between 3 years, the 460TWh (2011) that the generated energy of whole world wind-powered electricity generation reaches, accounts for 2.1% of the total amount 22018TWh of world's generating then.
At the beginning of the nineties in last century, the blower fan of the 200kW of German designs manufacture is gone into operation on a large scale, and the rotor diameter of this blower fan is 25m, tower height 30m.In March, 2011, Vestas (Vestas) has issued the 7MW offshore wind turbine that rotor diameter reaches 164m.The 7MW offshore wind turbine of rotor diameter 165m has then been issued in Mitsubishi's electric power system Europe (MPSE), Siemens, Alstom, Nordex also released the Large-scale Wind Turbines of 6MW in 2011, the maximization of blade significantly can promote the unit electric motor power of wind-driven generator, significantly promotes the utilization ratio of wind energy in wind field.
Order fan blade is just constantly towards maximization future development, the weight of individual blade and rated power are proportional to cube and the quadratic relation of length of blade respectively, current land and marine main flow wind-power electricity generation equipment group are respectively 1 ~ 3MW and 3 ~ 5MW, and its length of blade is 26 ~ 50m and 50 ~ 65m.Along with length of blade increases, weight increases too fast, and the problems such as thing followed transport and installation, all make lightweight become the emphasis of people's research.In the past, Fan blade material mainly adopts timber, canvas and metal.Present then mainly adopt the advanced composite material (ACM) such as glass fibre reinforced plastics, carbon fibre reinforced composite of lighter weight.The LM company of Denmark is global maximum wind-power electricity generation group always, and its market share accounts for 45% of the world.The most linear leaf that LM company produces at present is 61.5m, and material is epoxy group glass fibre reinforced composites, and single leaf weight reaches 17.7 tons.Can find out that the simple composite materials such as glass fibre reinforced plastics that rely on can not meet blade maximization, light-weighted demand for development.Brand-new research must be carried out from the aspect such as blade, blade system,
The development trend of current wind-powered electricity generation equipment is: maximization, lightweight, offshore wind farm, high reliability, high controllability and rational manufacture/installation/maintenance cost.Particularly for marine vessel, offshore oil platform, the wind power technology that need more efficiently, there is folding function, be convenient to power adjustments.
For the folding function of the high efficiency in wind power technology, blade, these three problems of simple and direct adjustment of power, the present invention proposes a kind of novel blade system, the ability of wind-driven generator capturing wind energy can be increased substantially, blade has folding function, and paddle chip technology is determined in the segmentation utilizing dihedral vane to realize power adjustments.
Summary of the invention
Sea has good wind resource, and marine transportation occupies again very large proportion in the logistics in the whole world, and consumes a lot of energy, how to make full use of the offshore wind energy resource green energy resource target pursued of people just; The present invention is directed to marine vessel mobile platform and offshore drilling platforms, proposing to be used for a kind of blade can the wind generator device of folding, blade long being unfavorable for solving offshore wind generating device passes a bridge, approaches, meet with typhoon and occur that blade such as to lose at the specific question, and increase substantially the generating efficiency of blower fan further, a kind of foldable double air exhaust generator device is proposed.
Technological scheme of the present invention is as follows:
A kind of foldable double coaxial blade wind power generation machine, containing blade, front and back wheel hub, main shaft and generator, described blade adopts two-part folding blade, this two-part folding blade comprises primary blades and folding blade, and technical characteristics of the present invention is also: this wind generator device also comprises front-seat blade Folding device and rear row's blade Folding device; Two two-part folding blade and front-seat blade Folding device form front-seat blade assembly; Blade assembly is arranged after two two-part folding blade and rear row's blade Folding device are formed; Be located along the same line after two folding blade expansion of front-seat blade assembly, also be located along the same line after two folding blade of rear row's blade assembly launch, after front-seat blade assembly mounted blade, after the plane at place and rear row's blade assembly mounted blade, the plane at place forms cross quadrature arrangement.
In technique scheme, described front-seat blade Folding device comprises the two groups of folding link assemblies and front-end bracket that relative main is arranged symmetrically with, and often organizes the rack fixing seat that folding link assembly includes the first folding connecting rod, the second folding connecting rod, folding drive unit and is arranged on front-end bracket; Front-end bracket is coaxial with main shaft, and its one end is fixed on front hub, and the other end is provided with rack fixing seat; The root of front-seat two primary blades is all by the first gudgeon connecting base and front hub hinge; One end of the first front-seat folding connecting rod is hinged with front-seat primary blades by the second gudgeon connecting base, and the other end is connected with folding drive unit; One end of the second front-seat folding connecting rod is connected with folding drive unit, the other end and rack fixing seat hinged; The linkage structure of the structure of rear row's blade Folding device and this structure and rear row two primary blades is identical with front-seat structure.
Another technical characteristics of technology of the present invention is: the folding drive unit in front-seat blade Folding device and rear row's blade Folding device all adopts the mode of worm and gear to drive, and makes primary blades all self-lockings on the arbitrary position of folding of front-seat blade assembly and rear row's blade assembly.
Another technical characteristics of the present invention is: the primary blades of front-seat blade assembly and rear row's blade assembly is determines paddle sheet, the folding blade be connected in primary blades all adopts the folding blade of inclination, and folding blade carries out folding and launch around running shaft by folding driving device.The running shaft of described folding blade and the span line of primary blades form a non-orthogonal tilt angle.
Technical characteristics of the present invention is also: the length of described primary blades and the ratio of folding blade length are 1:0.3 ~ 1:0.5.Blower fan front hub and rear-wheel hub are all connected on same blower fan main shaft, carry out in the same way with synchronous rotation.
The present invention compared with prior art, there is following characteristics and outstanding effect: 1. adopt blade Folding device to realize folding and the expansion of blade, blade can be made to draw in completely, reduce the height of blade, to adapt to some special situations, as naval vessel, offshore oil platform etc., 2. double-row blades is adopted, wind-driven generator can be increased substantially to the capture ability of wind energy and generating efficiency, 3. two row's blades are arranged in front end and the rear end of pylon, the deadweight of blade can be made driftage bearing and pylon stressed more even, solve the unbalance loading problem of driftage bearing and pylon, 4. adopt and surely starch primary blades and folding blade, blade is made to have carried out segmentation, be convenient to manufacture, transport and installation, and there is no pitch-controlled system, and adopt the folding adjustment carrying out power of blade, make the control of power more simple effectively, 5. be that criss-crossing is arranged by blade design that is front-seat and rear row, the wake flow that front-seat blade can be made to produce is less on rear row's blade impact.Therefore, a kind of foldable double coaxial blade wind power generation machine of the present invention has the features such as higher generating efficiency, folding function easily, favourable topology layout, simple and direct power adjustments, lighter structure weight and higher Security.
Accompanying drawing explanation
Fig. 1 is the foldable double coaxial blade wind power generation machine schematic diagram of one provided by the invention.
Fig. 2 is the folding state figure of foldable double coaxial blade wind power generation machine.
In figure: the front-seat blade assembly of 1-; 2-front hub; Blade assembly is arranged after 3-; 4-rear-wheel hub; 5-front-end bracket; 6-rack fixing seat; 7a-first folding connecting rod; 7b-second folding connecting rod; 8-folding drive unit; 9-first gudgeon connecting base; 10-primary blades; 11-folding blade; 12-folding driving device; 13-blower fan main shaft; 14-generator; 15-gearbox; 16-yaw system; 17-pylon; 18-front-seat blade place plane; Blade place plane is arranged after 19-; 20-rear end support; The front-seat blade Folding device of 21-; Blade Folding device is arranged after 22-; 23-second gudgeon connecting base; 24-folding blade tilt angle.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention and embodiment are further described:
Fig. 1 is the foldable double coaxial blade wind power generation machine schematic diagram of one provided by the invention, described device contains front-seat blade assembly 1, front hub 2, rear row's blade assembly 3, rear-wheel hub 4, blower fan main shaft 13, gearbox 15 and generator 14, and two blades of front-seat blade assembly 1 are positioned at the front portion of blower fan pylon 17.Two two-part folding blade and front-seat blade Folding device 21 form front-seat blade assembly 1; Two two-part folding blade and rear row's blade Folding device 22 form rear row's blade assembly 3.Two-part folding blade comprises primary blades 10 and folding blade 11; The length of primary blades and the ratio of folding blade length are for being preferably 1:0.3 ~ 1:0.5.
Front-seat blade Folding device 21 and rear row's blade Folding device 22 include the two groups of folding link assemblies and front-end bracket 5 and rear end support 20 that relative blower fan main shaft 13 is arranged symmetrically with; Often organize folding link assembly and include the first folding connecting rod 7a, the second folding connecting rod 7b, folding drive unit 8 and rack fixing seat 6; Folding drive unit 8 is arranged in the middle of the first folding connecting rod 7a and the second folding connecting rod 7b; Front-end bracket 5 and rear end support 20 coaxial with blower fan main shaft 13, one end of front-end bracket 5 is fixed on front hub 2, and the other end is provided with rack fixing seat 6; One end of rear end support 20 is fixed on rear-wheel hub 4, and the other end is provided with rack fixing seat 6.The root of front-seat two primary blades 10 is all by the first gudgeon connecting base 9 and front hub 2 hinge; The root of rear row two primary blades 10 is all by the first gudgeon connecting base and rear-wheel hub 4 hinge, one end of the first front-seat folding connecting rod and the first folding connecting rod of rear row is hinged with the primary blades of front-seat primary blades and rear row respectively by the second gudgeon connecting base, and their the other end is connected with folding drive unit 8 respectively; The second front-seat folding connecting rod is connected with folding drive unit 8 respectively with one end of the second folding connecting rod of rear row, their the other end and rack fixing seat 6 hinged.
Folding drive unit can adopt the mode of worm and gear to drive, to control folding and the expansion of two folding connecting rods, and can self-locking on the arbitrary position of folding.
The front hub 2 of blower fan and rear-wheel hub 4 can be connected on same blower fan main shaft 13, carry out in the same way with synchronous rotation, also can adopt and be arranged on respectively on different blower fan main shafts.
Two blades of front-seat blade assembly 1 provided by the present invention and two blades of rear row's blade assembly 3 are after deployment for criss-crossing is arranged, namely front-seat blade place plane 18 and rear row's blade place plane 19 are orthogonal vertical, and the wake flow that front-seat blade can be made like this to produce is less on rear row's blade impact; Each blade is connected on blower fan main shaft 13 by axial fan hub, for coaxial synchronous rotates.
The primary blades 10 of front-seat blade assembly 1 and rear row's blade assembly 3 is determines paddle sheet, and the folding blade be connected in primary blades all adopts the folding blade 11 of inclination, and folding blade carries out fold around running shaft by folding driving device 12 and launches; The span line of the running shaft and primary blades 10 of stating folding blade 11 forms a non-orthogonal tilt angle 24.The generated output of blower fan is regulated by the folding blade 11 being connected to the inclination in primary blades; When blower fan is started working, first the impeller assembly of blower fan is made to aim at wind direction by yaw system 16, wind-force makes blade produce running torque, drive blower fan main shaft 13 to rotate by wheel hub, blower fan main shaft 13 carries out speed change rear driving generator 14 by the rotational speed of gearbox 15 pairs of main shafts and generates electricity.When wind-force changes, the folding driving device 12 started on oblique fold blade 11 carrys out the folded state of adjusting vane, can change the wind stream of blade, and then changes the running torque of blade.Owing to adopting double-row blades, the capture ability of wind-driven generator to wind energy can be increased substantially, two row's blades are arranged in front end and the rear end of pylon 17, the load of deadweight to driftage bearing and pylon because of blade can be made more even, solve unbalance loading problem.On naval vessel or offshore drilling platforms, when needing to carry out folding to the blade of blower fan, the folding drive unit 8 in front-seat blade Folding device 21 and rear row's blade Folding device 22 can be started, the first folding connecting rod 7a and the second folding connecting rod 7b is made to occur to rotate relative to knuckle, can by the blade folding of front-seat blade assembly 1 to front, by the blade folding of rear row's blade assembly 3 to rear, and, each folding blade 11 be connected in each primary blades 10 also can fold completely, makes the blade after folding be in a kind of compact condition; Fig. 2 is the folding state figure of foldable double coaxial blade wind power generation machine, and blade height at this moment reduces greatly, is applicable to naval vessel and passes a bridge, approaches, or meet with the bad weather conditions such as typhoon, to ensure the safety of blower fan and carrying platform.
Claims (7)
1. a foldable double coaxial blade wind power generation machine, containing blade, front and back wheel hub, blower fan main shaft and generator, described blade adopts two-part folding blade, this two-part folding blade comprises primary blades (10) and folding blade (11), it is characterized in that: this wind generator device also comprises front-seat blade Folding device (21) and rear row's blade Folding device (22); Two two-part folding blade and front-seat blade Folding device form front-seat blade assembly (1); Blade assembly (3) is arranged after two two-part folding blade and rear row's blade Folding device (22) are formed; Be located along the same line after two folding blade expansion of front-seat blade assembly (1), also be located along the same line after two folding blade of rear row's blade assembly (3) launch, after front-seat blade assembly (1) mounted blade place plane (18) and rear row's blade assembly (3) mounted blade after the plane (19) at place form cross quadrature arrangement.
2. the foldable double coaxial blade wind power generation machine of one according to claim 1, it is characterized in that: described front-seat blade Folding device (21) comprises the two groups of folding link assemblies and front-end bracket (5) that relative main is arranged symmetrically with, often organize the rack fixing seat (6) that folding link assembly includes the first folding connecting rod (7a), the second folding connecting rod (7b), folding drive unit (8) and is arranged on front-end bracket (5); Front-end bracket (5) is coaxial with blower fan main shaft, and its one end is fixed on front hub (2), and the other end is provided with rack fixing seat (6); The root of front-seat two primary blades (10) is all by the first gudgeon connecting base (9) and front hub (2) hinge; One end of the first front-seat folding connecting rod (7a) is hinged with front-seat primary blades (10) by the second gudgeon connecting base (23), and the other end is connected with folding drive unit (8); One end of the second front-seat folding connecting rod (7b) is connected with folding drive unit (8), the other end and rack fixing seat (6) hinged; The linkage structure of the structure of rear row's blade Folding device (22) and this structure and rear row two primary blades is identical with front-seat structure.
3. according to the foldable double coaxial blade wind power generation machine of one according to claim 2, it is characterized in that: the folding drive unit (8) in front-seat blade Folding device (21) and rear row's blade Folding device (22) all adopts the mode of worm and gear to drive, and makes primary blades all self-lockings on the arbitrary position of folding of front-seat blade assembly (1) and rear row's blade assembly (3).
4. according to the foldable double coaxial blade wind power generation machine of the one described in claim 1,2 or 3, it is characterized in that: the primary blades (10) of front-seat blade assembly (1) and rear row's blade assembly (3) is determines paddle sheet, the folding blade be connected in primary blades (10) all adopts the folding blade (11) of inclination, and folding blade carries out folding and launch around running shaft by folding driving device (12).
5. according to the foldable double coaxial blade wind power generation machine of one according to claim 4, it is characterized in that: the running shaft of described folding blade (11) and the span line of primary blades (10) form a non-orthogonal tilt angle (24).
6. according to the foldable double coaxial blade wind power generation machine of one according to claim 1, it is characterized in that: the length of described primary blades (10) and the ratio of folding blade (11) length are 1:0.3 ~ 1:0.5.
7. according to the foldable double coaxial blade wind power generation machine of one according to claim 1, it is characterized in that: blower fan front hub (2) and rear-wheel hub (4) are all connected on same blower fan main shaft (13), carry out in the same way with synchronous rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410412531.1A CN104234925B (en) | 2014-08-20 | 2014-08-20 | Foldable dual-row coaxial-blade wind driven generator device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410412531.1A CN104234925B (en) | 2014-08-20 | 2014-08-20 | Foldable dual-row coaxial-blade wind driven generator device |
Publications (2)
| Publication Number | Publication Date |
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| CN104234925A true CN104234925A (en) | 2014-12-24 |
| CN104234925B CN104234925B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410412531.1A Expired - Fee Related CN104234925B (en) | 2014-08-20 | 2014-08-20 | Foldable dual-row coaxial-blade wind driven generator device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508138A (en) * | 2015-12-10 | 2016-04-20 | 清华大学 | Front end support adjustable variable pitch device based on inclined hinge blade |
| CN112384692A (en) * | 2018-06-14 | 2021-02-19 | 维斯塔斯风力系统有限公司 | Wind turbine with blades hinged in an intermediate position |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040043248A (en) * | 2002-11-16 | 2004-05-24 | 원인호 | Wind turbine |
| CN200958460Y (en) * | 2006-10-09 | 2007-10-10 | 朱大碌 | Umbrella-type adjusting windmill |
| JP2010071277A (en) * | 2008-09-19 | 2010-04-02 | Tamotsu Shimauchi | Storing type double-action wind power generator |
| CN101881256A (en) * | 2010-06-23 | 2010-11-10 | 傅筱懿 | Wind power generator |
| CN102720632A (en) * | 2012-06-29 | 2012-10-10 | 国电联合动力技术有限公司 | Large wind generating set blade and application thereof |
-
2014
- 2014-08-20 CN CN201410412531.1A patent/CN104234925B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040043248A (en) * | 2002-11-16 | 2004-05-24 | 원인호 | Wind turbine |
| CN200958460Y (en) * | 2006-10-09 | 2007-10-10 | 朱大碌 | Umbrella-type adjusting windmill |
| JP2010071277A (en) * | 2008-09-19 | 2010-04-02 | Tamotsu Shimauchi | Storing type double-action wind power generator |
| CN101881256A (en) * | 2010-06-23 | 2010-11-10 | 傅筱懿 | Wind power generator |
| CN102720632A (en) * | 2012-06-29 | 2012-10-10 | 国电联合动力技术有限公司 | Large wind generating set blade and application thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508138A (en) * | 2015-12-10 | 2016-04-20 | 清华大学 | Front end support adjustable variable pitch device based on inclined hinge blade |
| CN105508138B (en) * | 2015-12-10 | 2018-05-25 | 清华大学 | A kind of adjustable vane change device of front support based on inclination hinged blades |
| CN112384692A (en) * | 2018-06-14 | 2021-02-19 | 维斯塔斯风力系统有限公司 | Wind turbine with blades hinged in an intermediate position |
| CN112384692B (en) * | 2018-06-14 | 2023-09-29 | 维斯塔斯风力系统有限公司 | Wind turbine with blades hinged in an intermediate position |
| US11821407B2 (en) | 2018-06-14 | 2023-11-21 | Vestas Wind Systems A/S | Wind turbine with blades hinged at an intermediate position |
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| CN104234925B (en) | 2017-05-17 |
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