CN102305173B - Multi-rotor wind generating system capable of automatically facing wind - Google Patents
Multi-rotor wind generating system capable of automatically facing wind Download PDFInfo
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- CN102305173B CN102305173B CN201110241037XA CN201110241037A CN102305173B CN 102305173 B CN102305173 B CN 102305173B CN 201110241037X A CN201110241037X A CN 201110241037XA CN 201110241037 A CN201110241037 A CN 201110241037A CN 102305173 B CN102305173 B CN 102305173B
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- 238000006243 chemical reaction Methods 0.000 claims description 45
- 238000007667 floating Methods 0.000 claims description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
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- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000009471 action Effects 0.000 description 1
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- 239000008358 core component Substances 0.000 description 1
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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
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Abstract
The invention discloses a multi-rotor wind generating system capable of automatically facing wind. The multi-rotor wind generating system comprises a tower, wind turbines, an A slewing bearing 2, a B slewing bearing 3, a framework 4, beams 5 and tail vanes 8; the A slewing bearing is arranged on the top of the tower; the B slewing bearing is arranged in the middle of the tower; inner rings of the A slewing bearing and the B slewing bearing are fixed on the tower; outer rings of the A slewing bearing and the B slewing bearing are connected with the framework; one end of each beam is connected with the framework; the wind turbines are fixedly connected with the beams; each wind turbine comprises a wind wheel 6 and a cabin 7; 2 to 100 wind turbines are arranged; the lengths of the beams on two sides of the framework are different; the longer beams are provided with more wind turbines than the shorter beams; the tail vanes are connected with the framework, the beams or/and cabins through pin rolls. The multi-rotor wind generating system capable of automatically facing wind has the advantages that: blades have long service life, the occupied area is small, installation and maintenance cost is low, the reliability is high, the application range is wide, a slewing bearing or a rotary driving device in the cabin is eliminated, and the automatic wind facing and yawing are realized.
Description
Technical field
The invention belongs to field of wind energy utilization, relate to a kind of can be automatically to many rotor wind generating systems of wind.
Background technique
Along with worldwide energy crisis and global environmental pollution aggravation, many countries all pay attention to research, the development and utilization of clean renewable energy sources more.Global Wind-energy timeliness points out, it is more ripe that wind generating technology is compared other renewable energy technologies, and its efficient is also higher, and industrial prospect is best, its development and use growth rate is far above conventional energy resource, and wind generating technology is one of renewable energy technologies with fastest developing speed in the world.
Wind wheel is the core component that wind energy is converted to mechanical energy, so the performance of the performance of blade decision wind-powered electricity generation unit, and the safe and stable operation of blade within phase projected life is most important.The blade of horizontal axis wind-driven generator is subjected to the comprehensive function of horizontal thrust, inertial force and gravity in rotary course.Be subjected to influence by the wind shear, the size of horizontal thrust changes all the time, and blade or transmission system and pylon are all produced large alternate load; The direction of inertial force changes at any time; Gravity produces an alternate load with the speed same frequency at root of blade.Above-mentioned three alternate loads and consequent vibration are the main causes that blade destroys.
The wind-driven generator single-machine capacity is done larger and larger, and at present more consistent view is in the world: single-machine capacity is larger, and cost is lower, and its reason is to it is generally acknowledged that wind energy conversion system power is larger, and required wind energy conversion system number is fewer, and the parts that need repairing are fewer, and cost is lower.
In fact, owing to be subjected to the rubbing action on building and ground, increase along with height, wind speed increases gradually, this phenomenon is referred to as wind shear, and when blade was in diverse location in plane of rotation, wind speed can be variant, thereby the size of the horizontal thrust of bearing at plane of rotation Vertical direction upper blade and flywheel moment can be different, cause blade to be subject to fatigue load.Simultaneously, gravity also can produce alternate load at blade.Therefore, blade is longer, and weight is heavier, is subjected to the impact of wind shear and gravitational load larger, and the alternate load that causes blade to bear is larger, the easier failure of blade.At present, the report that blades of large-scale wind driven generator destroys is also rare, mainly is that problem does not also expose fully because the installation time is short, after the several years, and perhaps can the large size outburst.In case go wrong; wind energy turbine set because shut down, the power failure economic loss, count again maintenance, lifting in and change component, overload transport, repeat to install etc. and spend, blower fan is installed in remote or ungetable area mostly in addition; lifting dismounting difficulty is large, and that pays at last is costly.Therefore, although the manufacture cost of wind-powered electricity generation unit reduces with increased power, consider the expenses such as maintenance in later stage, its overall cost can rise on the contrary.On the other hand, its length of blade of large windpower generating unit will reach 60-70m, and land transportation, installation be difficulty very, and the crane capacity that usefulness is installed will be above 1200-1400t, and a lot of areas do not possess this condition, thereby have limited the use of large windpower generating unit.
The wind energy conversion system of outwork has certain nominal operation wind speed, when wind speed is lower than rated wind speed, in order to make the generated energy maximization, wind wheel is facingd the wind, and is higher than rated wind speed and work as wind speed, in order to protect wind energy conversion system, need to go off course.
Usually use at present device for revolving and driving, constantly monitor wind speed, carry out at any time tuning, device for revolving and driving not only operating conditions is relatively poor, and cost is high.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of can be automatically to many rotor wind generating systems of wind.
Technological scheme of the present invention is summarized as follows:
A kind of can be automatically to many rotor wind generating systems of wind, comprise pylon 1 and wind energy conversion system, also comprise A floating bearing 2, B floating bearing 3, framework 4, beam 5 and tail vane 8, the A floating bearing is arranged on tower top, the B floating bearing is arranged on the middle part of pylon, the inner ring of A floating bearing and B floating bearing is fixed on the pylon, the outer ring of A floating bearing and B floating bearing is connected with framework, one end of beam is connected with framework, wind energy conversion system is fixedly connected with beam, wind energy conversion system comprises wind wheel 6 and cabin 7, wind energy conversion system is 2-100, the length of the beam of framework both sides is unequal, and the many 0-10 of quantity of wind energy conversion system are individual on the beam that the quantity of the wind energy conversion system that arranges on the long beam is relatively lacked, tail vane and framework, beam or/and the cabin connect by bearing pin.
Framework is plane structure or stereoeffect, and the bar that forms framework is square tube, pipe, I-steel, channel-section steel, square steel, round steel or angle steel.
The number of tail vane is 1-100.
Wind energy conversion system is windward type or Downwind type.
Also comprise mast 9, an end of mast is arranged on the pylon.Mast is 3-40.
The power of wind energy conversion system is preferred 0.5～500kW, preferably 2～100kW.
Advantage of the present invention and good effect are:
(1) leaf longevity is long.A plurality of medium and small wind energy conversion systems are installed on the pylon of top of the present invention, and its blade is short, is subjected to influence by the wind shear little in short transverse, and the fatigue load of short blade is little, and the manufacturing technology of short blade is ripe simultaneously, stable performance, thereby the life-span of blade is long.
(2) floor space is little.Consider the impact of wake flow, the common wind-powered electricity generation unit of prior art when mounted will be at intervals, and a plurality of wind energy conversion systems on a pylon of the present invention only need to consider influencing each other of wind energy conversion system side direction, have greatly saved floor space.Simultaneously, the wake effect of medium and small unit can be arranged more the present invention apart from weak point in wind energy turbine set, be conducive to improve the total installation of generating capacity of wind energy turbine set, improves the economic benefit of wind energy turbine set.
(3) unique mounting type.Pylon of the present invention is connected with beam, when normal the use, as the mounting structure of wind energy conversion system, beam can be used as and hangs support when installing and keep in repair, do not need or only need small-sized lifting machinery just can carry out equipment and install and dismounting, effectively reduce the installation and maintenance cost.
(4) maintenance cost is low.Be mainly reflected in the following aspects: the one, owing to adopt medium and small wind energy conversion system, its blade is not only short but also lightweight, convenient transportation and replacing are easy; The 2nd, the scale high efficiency is beneficial to integrated and modularization and scale, reduces production costs, and increases economic efficiency; The 3rd, medium and small wind energy conversion system technology maturation, component low price.
(5) good reliability of system.The present invention is the mode of arranging a plurality of wind energy conversion systems at a pylon owing to what adopt, when single or certain several wind energy conversion system break down, can not exert an influence to other wind energy conversion systems, and system still can keep running well substantially.The wind energy conversion system number of wind energy turbine set is more, and single wind energy conversion system breaks down very little on the impact of system and electrical network.
(6) applied range.Compare with the large windpower generating unit with large-scale, the present invention is owing to adopt medium and small wind energy conversion system, no matter be to the requirement of wind field condition, geographical position or floor space will be low many, greatly expanded the application area of native system.
(7) owing to respectively arranged a floating bearing at top and the middle part of pylon, can not produce moments of flexure to two floating bearings in the horizontal thrust effect of bearing the wind generation, compare with the common wind-powered electricity generation unit of prior art, the stressing conditions of floating bearing is greatly improved.
(8) automatically to wind, driftage and safety protection.Tail vane drives more than the B floating bearing part in the flywheel moment that wind speed produces during less than rated wind speed to carry out wind.The wind energy conversion system of asymmetric layout drives more than the B floating bearing part in the flywheel moment that wind speed produces during greater than rated wind speed and goes off course.
(9) demand motive device not.Owing to can realizing by tail vane wind, driftage and safety protection of structure, therefore do not need to arrange again the device for revolving and driving of hydraulic type or motor-driven.
Description of drawings
Fig. 1 be a kind of can be automatically to the schematic representation of many rotor wind generating systems of wind.
Fig. 2 be a kind of can be automatically to the schematic top plan view of many rotor wind generating systems of wind.
Fig. 3 be a kind of can be automatically to the schematic top plan view of the another kind of forms of many rotor wind generating systems of wind.
Fig. 4 be a kind of can be automatically to the schematic representation of the another kind of forms of many rotor wind generating systems of wind.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is further described, it is descriptive below describing in detail, is not determinate, can not limit the protection domain of patent of the present invention.
A kind of can be automatically to many rotor wind generating systems of wind, comprise pylon 1 and wind energy conversion system, also comprise A floating bearing 2, B floating bearing 3, framework 4, beam 5 and tail vane 8, the A floating bearing is arranged on tower top, the B floating bearing is arranged on the middle part of pylon, the inner ring of A floating bearing and B floating bearing is fixed on the pylon, the outer ring of A floating bearing and B floating bearing is connected with framework, one end of beam is connected with framework, wind energy conversion system is fixedly connected with beam, wind energy conversion system comprises wind wheel 6 and cabin 7, wind energy conversion system is 2-100, the length of the beam of framework both sides is unequal, and the many 0-10 of quantity of wind energy conversion system are individual on the beam that the quantity of the wind energy conversion system that arranges on the long beam is relatively lacked, tail vane and framework, beam or/and the cabin connect by bearing pin.
Framework is plane structure or stereoeffect, and the bar that forms framework is square tube, pipe, I-steel, channel-section steel, square steel, round steel or angle steel.
The number of tail vane is 1-100.
Wind energy conversion system is windward type or Downwind type.
Also comprise mast 9, an end of mast is arranged on the pylon.Mast is 3-40.
The power of wind energy conversion system is preferred 0.5～500kW, preferably 2～100kW.
The working principle of patent of the present invention is:
When wind speed reached the startup wind speed of wind energy conversion system, wind energy conversion system began rotation work, the electric energy of generation convert to the electricity of electrical network with homophase frequently after be connected on the electrical network and generate electricity by way of merging two or more grid systems, or be transported to energy-storage system and carry out energy storage.Tail vane drives more than the B floating bearing part in the flywheel moment that wind speed produces during less than rated wind speed to carry out wind, and the flywheel moment that the wind energy conversion system of asymmetric layout produces during greater than rated wind speed at wind speed drives more than the B floating bearing part and goes off course.
Claims (8)
- One kind can be automatically to many rotor wind generating systems of wind, comprise pylon (1) and wind energy conversion system, it is characterized in that also comprising A floating bearing (2), B floating bearing (3), framework (4), beam (5) and tail vane (8), described A floating bearing is arranged on described tower top, described B floating bearing is arranged on the middle part of described pylon, the inner ring of described A floating bearing and B floating bearing is fixed on the pylon, the outer ring of described A floating bearing and described B floating bearing is connected with described framework, one end of described beam is connected with described framework, described wind energy conversion system is fixedly connected with described beam, described wind energy conversion system comprises wind wheel (6) and cabin (7), described wind energy conversion system is 2-100, the length of the beam of described framework both sides is unequal, the many 0-10 of quantity of wind energy conversion system are individual on the beam that the quantity of the wind energy conversion system that arranges on the long beam is relatively lacked, described tail vane and described framework, described beam or/and described cabin connect by bearing pin.
- 2. according to claim 1ly a kind ofly can it is characterized in that described framework is plane structure or stereoeffect automatically to many rotor wind generating systems of wind, the bar that forms framework is square tube, pipe, I-steel, channel-section steel, square steel, round steel or angle steel.
- According to claim 1 a kind of can be automatically to many rotor wind generating systems of wind, the number that it is characterized in that described tail vane is 1-100.
- 4. according to claim 1ly a kind ofly can automatically to many rotor wind generating systems of wind, it is characterized in that described wind energy conversion system is windward type or Downwind type.
- 5. according to claim 1ly a kind ofly can it is characterized in that also comprising mast (9) automatically to many rotor wind generating systems of wind, an end of described mast is arranged on the pylon.
- According to claim 5 a kind of can be automatically to many rotor wind generating systems of wind, it is characterized in that described mast is 3-40.
- According to claim 1 or 4 described a kind of can be automatically to many rotor wind generating systems of wind, the power that it is characterized in that described wind energy conversion system is 0.5～500kW.
- According to claim 7 a kind of can be automatically to many rotor wind generating systems of wind, the power that it is characterized in that described wind energy conversion system is 2～100kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241037XA CN102305173B (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind generating system capable of automatically facing wind |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241037XA CN102305173B (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind generating system capable of automatically facing wind |
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| Publication Number | Publication Date |
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| CN102305173A CN102305173A (en) | 2012-01-04 |
| CN102305173B true CN102305173B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110241037XA Expired - Fee Related CN102305173B (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind generating system capable of automatically facing wind |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102536655B (en) * | 2012-02-15 | 2014-06-11 | 三一电气有限责任公司 | Controller, floating type wind driven generation unit and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587678A (en) * | 2004-09-02 | 2005-03-02 | 高志 | Multiple wind wheel wind power generator |
| CN201202585Y (en) * | 2008-05-27 | 2009-03-04 | 钟振海 | Full-automatic independent wind power generator tower frame |
| CN101737261A (en) * | 2008-11-06 | 2010-06-16 | 李哲平 | Wind driven generator with multiple wind wheels |
| CN101666289B (en) * | 2009-09-19 | 2013-06-05 | 杜振义 | Multiple-blade machine |
| CN101813056A (en) * | 2009-09-19 | 2010-08-25 | 杜振义 | Multi-propeller wind driven generator |
| CN101737248B (en) * | 2010-02-20 | 2012-04-25 | 马军兴 | Wind machine provided with symmetrically-turning axial-flow even wheels |
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