CN102322398A - Multi-rotor wind power generation system with unequal beam lengths - Google Patents
Multi-rotor wind power generation system with unequal beam lengths Download PDFInfo
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- CN102322398A CN102322398A CN201110240950A CN201110240950A CN102322398A CN 102322398 A CN102322398 A CN 102322398A CN 201110240950 A CN201110240950 A CN 201110240950A CN 201110240950 A CN201110240950 A CN 201110240950A CN 102322398 A CN102322398 A CN 102322398A
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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 generation system with unequal beam lengths, which comprises a lower pylon 1, a rotary bearing 3, windmills, an upper pylon 2, a rope and/or a rod 8, beams 6 and a tail vane 7, wherein the rotary bearing is arranged between the upper pylon and the lower pylon; two sides of the upper pylon are respectively connected with one ends of the beams; the outer end of the uppermost beam is connected with the top end of the upper pylon through the rope and/or the rod; the outer ends of adjacent beams are connected through the rope and/or the rod; the windmills are fixedly connected with the top of the upper pylon or/and the beams; the lengths of the beams at two sides of the upper pylon are unequal; the number of the windmills on the longer beams is greater than that of the windmills on the shorter beams; and the tail vane is connected with the upper pylon, the beams or/and an engine room through a pin roll. The multi-rotor wind power generation system has the advantages of long service life of the vane, small occupied area, low cost for installation and maintenance, favorable reliability, wide application range, low bearing stress, automatic yawing and small stress of the beams; and the rotary bearing or a rotary driving device in the engine room is omitted.
Description
Technical field
The invention belongs to field of wind energy utilization, relate to a kind of many rotors wind-power generating system that does not wait beam length.
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 converts mechanical energy into, 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 receives the comprehensive function of horizontal thrust, inertial force and gravity in rotary course.Receive 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.
The wind-driven generator single-machine capacity is done bigger and bigger, and relatively more consistent in the world at present 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 receive the rubbing action on building and ground, along with the increase of 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 horizontal thrust of bearing at plane of rotation Vertical direction upper blade and flywheel moment can be different, cause blade to receive fatigue load.Simultaneously, gravity also can produce alternate load on blade.Therefore, blade is long more, and weight is heavy more, receives the influence of wind shear and gravitational load big more, and the alternate load that causes blade to bear is big more, and blade destroys more easily.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.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the existing technology, a kind of many rotors wind-power generating system that does not wait beam length is provided.
Technological scheme of the present invention is summarized as follows:
A kind of many rotors wind-power generating system that does not wait beam length comprises bottom pylon 1, floating bearing 3 and wind energy conversion system, also comprises top pylon 2, rope and/or bar 8, beam 6 and tail vane 7; Floating bearing is arranged between top pylon and the bottom pylon; The both sides of top pylon are connected with an end of beam respectively, and the outer end of uppermost beam is connected with the top of top pylon through rope and/or bar, and the outer end of adjacent beams connects through rope and/or bar; The top of wind energy conversion system and top pylon or/and beam be fixedly connected; The length of the beam of pylon both sides, top 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 is provided with on the long beam is relatively lacked, and wind energy conversion system comprises wind wheel 4 and cabin 5; Wind energy conversion system is 2-100, tail vane and top pylon, beam or/and the cabin be connected through bearing pin.
The number of tail vane is 1-100.
The middle part of beam connects through 1-10 rope and/or bar in twos, and the middle part of the said beam of highest point is connected with the top of said top pylon through rope and/or bar.
The present invention also comprises mast 9, and an end of mast is connected on the pylon of bottom.
The present invention can also comprise cabin frame 13, and the cabin frame is arranged on the pylon of top, and the cabin frame is provided with wind energy conversion system.
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, on short transverse, receives influence by the wind shear little, 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 influence of wake flow, the common wind-powered electricity generation unit of existing technology when mounted will be at intervals, and a plurality of wind energy conversion systems on a pylon of the present invention only need be considered 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) mounting type of uniqueness.Top of the present invention pylon 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 the small-sized lifting of needs machinery just can carry out equipment installation 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 is easy with replacing; 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 on a pylon, arranging a plurality of wind energy conversion systems 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 basically.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 device for revolving and driving in the cabin.Since on top pylon and bottom pylon intermediate arrangement floating bearing, realized the integral body revolution of top pylon, beam and wind energy conversion system, so floating bearing or device for revolving and driving need be set in the cabin of single wind energy conversion system.
(8) be furnished with some wire rope or bar at the end and the middle part of a long beam, beam is connected in twos and is connected on the pylon, can improve the stressed of beam greatly, reduce the overall cost of structure with less cost.
(9) tail vane carries out wind with top at the flywheel moment driving rotational bearing that wind speed produces during less than rated wind speed.The wind energy conversion system of asymmetric layout is gone off course with top at the flywheel moment driving rotational bearing that wind speed produces during greater than rated wind speed.
(10) because therefore can realizing through the tail vane of precise design wind, driftage and safety protection of structure do not need to be provided with the device for revolving and driving of hydraulic type or motor-driven again.
Description of drawings
Fig. 1 is the schematic representation of many rotors wind-power generating system.
Fig. 2 is the schematic top plan view of many rotors wind-power generating system.
Fig. 3 is the schematic top plan view of the another kind of form of many rotors wind-power generating system.
Fig. 4 is the schematic top plan view of the third form of many rotors wind-power generating system.
Fig. 5 differs the schematic representation of the many rotors wind-power generating system that is at 0 o'clock for both sides wind energy conversion system number.
Fig. 6 is the schematic representation of the many rotors wind-power generating system when the cabin frame is arranged.
Fig. 7 is the schematic top plan view of the many rotors wind-power generating system when the cabin frame is arranged.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
A kind of many rotors wind-power generating system that does not wait beam length comprises bottom pylon 1, floating bearing 3 and wind energy conversion system, also comprises top pylon 2, rope and/or bar 8, beam 6 and tail vane 7; Floating bearing is arranged between top pylon and the bottom pylon; The both sides of top pylon are connected with an end of beam respectively, and the outer end of uppermost beam is connected with the top of top pylon through rope and/or bar, and the outer end of adjacent beams connects through rope and/or bar; The top of wind energy conversion system and top pylon or/and beam be fixedly connected; The length of the beam of pylon both sides, top 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 is provided with on the long beam is relatively lacked, and wind energy conversion system comprises wind wheel 4 and cabin 5; Wind energy conversion system is 2-100, tail vane and top pylon, beam or/and the cabin be connected through bearing pin.
The number of tail vane is 1-100.
The middle part of beam connects through 1-10 rope and/or bar in twos, and the middle part of the said beam of highest point is connected with the top of said top pylon through rope and/or bar.
The present invention also comprises mast 9, and an end of mast is connected on the pylon of bottom.
The present invention can also comprise cabin frame 13, and the cabin frame is arranged on the pylon of top, and the cabin frame is provided with wind energy conversion system.
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, and when wind speed does not also reach the speed limit wind speed, wind wheel will be in the position over against wind direction, the position of just working under the effect of tail vane.When wind speed during greater than the speed limit wind speed, asymmetric structures arranged can impel wind wheel to produce a down the wind rotating moment, reaches the purpose of driftage and safety protection.
Claims (7)
1. many rotors wind-power generating system that does not wait beam length; Comprise bottom pylon (1), floating bearing (3) and wind energy conversion system; It is characterized in that also comprising top pylon (2), rope and/or bar (8), beam (6) and tail vane (7), said floating bearing is arranged between said top pylon and the said bottom pylon, and the both sides of top pylon are connected with an end of beam respectively; The outer end of uppermost beam is connected with the top of said top pylon through rope and/or bar; The outer end of adjacent beams connects through rope and/or bar, and the top of said wind energy conversion system and said top pylon is or/and said beam is fixedly connected, and the length of the beam of pylon both sides, said top 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 is provided with on the long beam is relatively lacked; Said wind energy conversion system comprises wind wheel (4) and cabin (5), and said wind energy conversion system is 2-100, said tail vane and said top pylon, said beam or/and said cabin be connected through bearing pin.
2. a kind of many rotors wind-power generating system that does not wait beam length according to claim 1, the number that it is characterized in that said tail vane are 1-100.
3. a kind of many rotors wind-power generating system that does not wait beam length according to claim 1; The middle part that it is characterized in that said beam connects through 1-10 rope and/or bar in twos, and the middle part of the said beam of highest point is connected with the top of said top pylon through rope and/or bar.
4. a kind of many rotors wind-power generating system that does not wait beam length according to claim 1 is characterized in that also comprising mast (9), and an end of said mast is connected on the pylon of said bottom.
5. a kind of many rotors wind-power generating system that does not wait beam length according to claim 1 is characterized in that also comprising cabin frame (13), and said cabin frame is arranged on the pylon of said top, and said cabin frame is provided with wind energy conversion system.
6. a kind of many rotors wind-power generating system that does not wait beam length according to claim 1, the power that it is characterized in that said wind energy conversion system is 0.5～500kW.
7. a kind of many rotors wind-power generating system that does not wait beam length according to claim 6, the power that it is characterized in that said wind energy conversion system is 2～100kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110240950A CN102322398A (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind power generation system with unequal beam lengths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110240950A CN102322398A (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind power generation system with unequal beam lengths |
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| CN102322398A true CN102322398A (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110240950A Pending CN102322398A (en) | 2011-08-19 | 2011-08-19 | Multi-rotor wind power generation system with unequal beam lengths |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007009464A1 (en) * | 2005-07-19 | 2007-01-25 | Pp Energy Aps | Plant for exploiting wind energy at sea |
| US20090311099A1 (en) * | 2008-06-16 | 2009-12-17 | Richards William R | Banded turbine |
| CN101666289A (en) * | 2009-09-19 | 2010-03-10 | 杜振义 | Multiple-blade machine |
| CN101813056A (en) * | 2009-09-19 | 2010-08-25 | 杜振义 | Multi-propeller wind driven generator |
-
2011
- 2011-08-19 CN CN201110240950A patent/CN102322398A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007009464A1 (en) * | 2005-07-19 | 2007-01-25 | Pp Energy Aps | Plant for exploiting wind energy at sea |
| US20090311099A1 (en) * | 2008-06-16 | 2009-12-17 | Richards William R | Banded turbine |
| CN101666289A (en) * | 2009-09-19 | 2010-03-10 | 杜振义 | Multiple-blade machine |
| CN101813056A (en) * | 2009-09-19 | 2010-08-25 | 杜振义 | Multi-propeller wind driven generator |
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Application publication date: 20120118 |