CN102269111A - Multi-rotor wind power generator system with cantilever beam - Google Patents
Multi-rotor wind power generator system with cantilever beam Download PDFInfo
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- CN102269111A CN102269111A CN2011102405600A CN201110240560A CN102269111A CN 102269111 A CN102269111 A CN 102269111A CN 2011102405600 A CN2011102405600 A CN 2011102405600A CN 201110240560 A CN201110240560 A CN 201110240560A CN 102269111 A CN102269111 A CN 102269111A
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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 power generator system with a cantilever beam. The system comprises a lower part tower frame (1), a rotation driving device (3), wind turbines, an upper part tower frame (2), the cantilever beam (6) and a cabin frame (7), wherein the rotation driving device is arranged between the upper part tower frame and the lower part tower frame; one end of the cantilever beam is fixedly connected with the upper part tower frame; the cabin frame is arranged on the upper part tower frame; the wind turbines are arranged on the top part of the upper part tower frame, and on the cantilever beam/ and the cabin frame; and each wind turbine comprises a wind wheel (4) and a cabin (5), and the number of the wind turbines is 2-100. The system provided by the invention has the advantages and positive effects: (1) a blade has a long service life; (2) the space covering is small; (3) the mounting cost is low; (4) the maintaining cost is low; (5) the system has good reliability; (6) the application range is wide; and (7) a rotation bearing or a rotation driving system in the cabin is cancelled.
Description
Technical field
The invention belongs to field of wind energy utilization, relate to a kind of many rotors wind-power generating system with overhang.
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.Whole world 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 in 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.Because influence by the wind shear, the size of horizontal thrust changes all the time, still is that transmission system and pylon all produce big alternate load to blade; 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.
At present, the wind-driven generator single-machine capacity is done bigger and bigger.Relatively more consistent in the world view is: single-machine capacity is big more, and cost is low more, and its reason is to it is generally acknowledged that wind energy conversion system power is big more, and required wind energy conversion system number is few more, and the parts that need repairing are few more, and cost is low more.
In fact, owing to be subjected to the rubbing action on building and ground, increase along with height, wind speed increases gradually, when blade is in diverse location in plane of rotation, wind speed is variant, thereby the size of horizontal thrust of bearing at plane of rotation Vertical direction upper blade and flywheel moment is also different, causes blade to be subjected to fatigue load.Simultaneously, gravity also can produce alternate load on blade.Blade is long more, and weight is heavy more, is subjected to the influence of wind shear and gravitational load big more, and the alternate load that causes blade to bear is big more, and blade is easy more to be destroyed.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 causes economic loss owing to shutting down, having a power failure, and counts maintenance, lifting and replacing component, the transportation of transfiniting again in, repeats installation or the like cost, and blower fan is installed in remote or ungetable area mostly in addition; lifting dismounting difficulty is big, and that pays at last is costly.Therefore, reduce though the manufacture cost of wind-powered electricity generation unit increases with 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.
Therefore, the road for development that the wind-powered electricity generation unit maximizes simply is brightless, seeks new outlet and is only the task of top priority.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of many rotors wind-power generating system with overhang is provided.
Technological scheme of the present invention is summarized as follows:
A kind of many rotors wind-power generating system with overhang, comprise bottom pylon 1, device for revolving and driving 3 and wind energy conversion system, also comprise top pylon 2, overhang 6 and cabin frame 7, device for revolving and driving is arranged between top pylon and the bottom pylon, one end of overhang is fixedlyed connected with the top pylon, and the cabin frame is arranged on the pylon of top, and wind energy conversion system is arranged on the top, overhang of top pylon or/and on the frame of cabin, wind energy conversion system comprises wind wheel 4 and cabin 5, and wind energy conversion system is 2-100.
The top pylon is preferably upright single pole shape, and overhang can be symmetricly set on the pylon of top or be crisscross arranged on the pylon of top, and overhang is 2-50, preferred 4-10.
The length of the overhang that connects on the pylon of top equates from top to bottom or reduces successively.
Distance between the overhang of top pylon homonymy equates from top to bottom or reduces successively.
Be arranged on the top pylon top, overhang or/and on the frame of cabin the rotor diameter of wind energy conversion system identical from top to bottom or reduce successively.
The top pylon can also be a branch-like.
Wind energy conversion system can be a windward type, also can be formula with the wind.
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 on short transverse, and the fatigue load of short blade is little, the manufacturing technology maturation of while short blade, and stable performance, thereby the life-span of blade is long.
(2) floor space is little.Consider the influence 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 of the present invention on a pylon only need to consider influencing each other of wind energy conversion system side direction, have saved floor space greatly.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, help improving the total installation of generating capacity of wind energy turbine set, improves the economic benefit of wind energy turbine set.
(3) Du Te mounting type.Top of the present invention pylon is connected with overhang, when normal the use, as the mounting structure of wind energy conversion system, overhang 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 in light weight, convenient transportation and replacing are easy; The 2nd, the scale high efficiency is beneficial to integrated, 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 on 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 to the influence 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, expanded the application area of native system greatly.
(7) cancelled floating bearing or the gyroscopic drive system in the cabin.Since top pylon and bottom pylon intermediate arrangement gyroscopic drive system, realized the integral body revolution of top pylon, overhang and wind energy conversion system, therefore floating bearing or gyroscopic drive system need be set in the cabin of single wind energy conversion system.
Description of drawings
Fig. 1 is the schematic representation of many rotors wind-power generating system of band overhang.
Fig. 2 is the schematic top plan view of many rotors wind-power generating system of band overhang.
Fig. 3 is the schematic representation of many rotors wind-power generating system (overhang is crisscross arranged on the pylon of top) of band overhang.
Fig. 4 is the schematic representation of many rotors wind-power generating system (branch-like top pylon) of band overhang.
Fig. 5 is the plan view of the another kind of form of many rotors wind-power generating system of band overhang.
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 protection scope of the present invention.
A kind of many rotors wind-power generating system with overhang, comprise bottom pylon 1, device for revolving and driving 3 and wind energy conversion system, also comprise top pylon 2, overhang 6 and cabin frame 7, device for revolving and driving is arranged between top pylon and the bottom pylon, be used for realizing to the top pylon, overhang, the integral body revolution of cabin frame and wind energy conversion system, one end of overhang is fixedlyed connected with the top pylon, the cabin frame is arranged on the pylon of top, wind energy conversion system is set directly at the top of top pylon, the middle part of overhang or outer end, or/and be arranged on the frame of cabin, wind energy conversion system comprises wind wheel 4 and cabin 5, wind energy conversion system is any one number in 2-100 the number, and the cabin is arranged in the frame of cabin.The blade of wind wheel is the 1-5 sheet, preferred 2-4 sheet.
The top pylon is preferably upright single pole shape, and overhang can be symmetricly set on the pylon of top or be crisscross arranged on the pylon of top, and overhang is 2-50, preferred 4-10.
The length of the overhang that connects on the pylon of top equates from top to bottom or reduces successively.
Distance between the overhang of top pylon homonymy equates from top to bottom or reduces successively.
Be arranged on the top pylon top, overhang or/and on the frame of cabin the rotor diameter of wind energy conversion system identical from top to bottom or reduce successively.
The top pylon can also be a branch-like.
Wind energy conversion system can be a windward type, also can be formula with the wind.
The power of wind energy conversion system is preferred 0.5～500kW, preferably selects between 2～100kW.
Overhang is connected be fixedly connected as welding, riveted joint or the bolt of top pylon.
Working principle 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 electrical network with frequently, behind the electricity of homophase, 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.When change of the wind, the wind vane in the system will turn round signal and send to device for revolving and driving, drive superstructure and turn round under hydraulic pressure or motor effect, turn on the wind direction direction always, reach the purpose to wind.When the recording anemometer in the system detected wind speed above rated wind speed, system sent a signal to device for revolving and driving, drives superstructure and go off course under hydraulic pressure or motor effect.
Claims (9)
1. many rotors wind-power generating system with overhang, comprise bottom pylon (1), device for revolving and driving (3) and wind energy conversion system, it is characterized in that also comprising top pylon (2), overhang (6) and cabin frame (7), described device for revolving and driving is arranged between described top pylon and the described bottom pylon, one end of described overhang is fixedlyed connected with the top pylon, described cabin frame is arranged on the pylon of described top, described wind energy conversion system is arranged on the top of described top pylon, overhang is or/and on the frame of cabin, described wind energy conversion system comprises wind wheel (4) and cabin (5), and described wind energy conversion system is 2-100.
2. a kind of many rotors wind-power generating system according to claim 1 with overhang, it is characterized in that described top pylon is upright single pole shape, described overhang is symmetricly set on the pylon of described top or is crisscross arranged on the pylon of described top, and described overhang is 2-50.
3. a kind of many rotors wind-power generating system with overhang according to claim 2, the length that it is characterized in that the described overhang that connects on the pylon of described top equates from top to bottom or reduces successively.
4. according to claim 1 or 2 or 3 described a kind of many rotors wind-power generating systems, it is characterized in that distance between the overhang of described top pylon homonymy equates from top to bottom or reduces successively with overhang.
5. according to claim 1 or 2 or 3 described a kind of many rotors wind-power generating systems with overhang, it is characterized in that being arranged on described top pylon top, overhang or/and on the frame of cabin the rotor diameter of wind energy conversion system identical from top to bottom or reduce successively.
6. a kind of many rotors wind-power generating system with overhang according to claim 1 is characterized in that described top pylon is a branch-like.
7. a kind of many rotors wind-power generating system with overhang according to claim 1 is characterized in that described wind energy conversion system is windward type or formula with the wind.
8. according to claim 1 or 7 described a kind of many rotors wind-power generating systems with overhang, the power that it is characterized in that described wind energy conversion system is 0.5～500kW.
9. a kind of many rotors wind-power generating system with overhang according to claim 8, 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 |
|---|---|---|---|
| CN2011102405600A CN102269111A (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind power generator system with cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102405600A CN102269111A (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind power generator system with cantilever beam |
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| CN102269111A true CN102269111A (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102405600A Pending CN102269111A (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind power generator system with cantilever beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425340A (en) * | 2020-05-13 | 2020-07-17 | 北京三力新能科技有限公司 | Layout mode of large-scale multi-impeller wind power system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201250765Y (en) * | 2008-08-06 | 2009-06-03 | 青岛安华新能源开发有限公司 | Assembly type wind generating set |
| WO2010098813A1 (en) * | 2009-02-28 | 2010-09-02 | Ener2 Llc | Wind energy device |
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2011
- 2011-08-19 CN CN2011102405600A patent/CN102269111A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201250765Y (en) * | 2008-08-06 | 2009-06-03 | 青岛安华新能源开发有限公司 | Assembly type wind generating set |
| WO2010098813A1 (en) * | 2009-02-28 | 2010-09-02 | Ener2 Llc | Wind energy device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425340A (en) * | 2020-05-13 | 2020-07-17 | 北京三力新能科技有限公司 | Layout mode of large-scale multi-impeller wind power system |
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Application publication date: 20111207 |