CN103291553A - Floating type double-blade wind generator with harmonic absorption device - Google Patents
Floating type double-blade wind generator with harmonic absorption device Download PDFInfo
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- CN103291553A CN103291553A CN2013102616600A CN201310261660A CN103291553A CN 103291553 A CN103291553 A CN 103291553A CN 2013102616600 A CN2013102616600 A CN 2013102616600A CN 201310261660 A CN201310261660 A CN 201310261660A CN 103291553 A CN103291553 A CN 103291553A
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a floating type double-blade wind generator with a harmonic absorption device, and belongs to the technical field of sea floating type wind power generation. The floating type double-blade wind generator with the harmonic absorption device comprises a floating type double-blade wind generator body, a barrel-shaped platform and an anchoring mechanism, wherein the barrel-shaped platform is connected to the bottom of the floating type double-blade wind generator body and used for reducing the motion amplitude of a whole system and improving stability of the system. The barrel-shaped platform comprises the harmonic absorption device, a seawater ballast tank and a solid ballast tank which are sequentially connected and arranged from top to bottom. The vibration frequency of the harmonic absorption device is consistent with the second-order low frequency motion frequency of the floating type double-blade wind generator, and the vibration direction of the harmonic absorption device and the second-order low frequency motion direction of the floating type double-blade wind generator are opposite. The seawater ballast tank is of a hollow structure, the outside of the seawater ballast tank is connected with the anchoring mechanism, and the seawater ballast tank is used for adjusting floatation conditions and stability of the floating type double-blade wind generator on the sea. The solid ballast tank is of a solid structure and used for reducing center of gravity of the system and ensuring that the whole system achieves unconditional stability. The floating type double-blade wind generator with the harmonic absorption device has the advantages of being capable of greatly reducing the motion amplitude value of the whole system, better in stability, and lower in manufacturing cost.
Description
Technical field
What the present invention relates to is a kind of device of floating marine formula technical field of wind power generation, specifically is a kind of floating double leaf wind-powered electricity generation machine with harmonious absorption plant.
Background technique
Early stage offshore wind farm exploitation is confined to shallow water area (the about 0-30 rice of the depth of water), the main fixed wind-powered electricity generation machine of coastal waters single pile and the gravity base type wind-powered electricity generation machine of adopting then develops in transition region (the about 30-50 rice of the depth of water) and adopts tripod or jacket-type coastal waters wind-powered electricity generation machine.Oversea wind power generation rapid technological improvement in recent years, developed in deepwater regions (the about 50-300 rice of the depth of water) and adopted floating type wind-powered electricity generation machine, for example Principle Power company and Windplus company design-build WindFloat floating wind-powered electricity generation machine, the sub-body of this floating wind-powered electricity generation machine is the semisubmersible platform of a suspensive chain type anchoring, have bigger water plane area and moment of inertia, attempt to design to increase WindFloat floating wind-powered electricity generation machine intact stability across the sea with this, the structural natural frequencies of this floating wind-powered electricity generation machine system is away from single order wave force frequency, but it is consistent with second order low frequency wave force frequency that the structural natural frequencies of this floating wind-powered electricity generation machine system often is difficult to avoid, it tends to produce harmonious resonance and causes very big motion amplitude (the first order motion amplitude is compared negligible often with second order motion amplitude) under second order low frequency action of wave force like this, and this just can produce very adverse influence at the blower fan of rotary electrification to its top.The floating wind-powered electricity generation machine of the suspensive chain type of other kind anchoring also all can run into the structural natural frequencies situation consistent with second order low frequency wave force frequency of system, thereby how to avoid that natural frequency because of floating wind-powered electricity generation machine system is consistent with second order low frequency wave force frequency to cause harmonious resonance into people's urgency problem to be solved.
Find through the retrieval to prior art, Chinese patent literature CN102146890, open day 2011-08-10, put down in writing a kind of mooring floating wind energy and wave energy combined generating platform for the deep-sea, comprise: blower fan, support platform and anchoring system, wherein: blower fan is fixedlyed connected with support platform, support platform floats on the water surface and is fixedly linked with an end of anchoring system, the other end of anchoring system is fixedly set in the seabed, it is characterized in that: described support platform comprises: buoyancy aid, impeller, transmission device, wave-energy power generation machine and power transmitting device, wherein: impeller, transmission device, wave-energy power generation machine and power transmitting device are arranged in the buoyancy aid respectively, the two ends of transmission device link to each other with generator with impeller respectively, generator links to each other with power transmitting device, and transmission device and impeller are positioned at below the horizontal plane.But the shortcoming that the prior art is compared with the present invention is: the structural natural frequencies of this existing system often also is difficult to avoid consistent with second order low frequency wave force frequency, it often also can produce harmonious resonance and cause very big motion amplitude under second order low frequency action of wave force like this, and this just also can produce very adverse influence at the blower fan of rotary electrification to its top.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of floating double leaf wind-powered electricity generation machine with harmonious absorption plant is provided, overcome prior art because of structural natural frequencies and the consistent shortcoming that causes harmonious resonance of second order low frequency wave force frequency, advantages such as the motion amplitude with whole system greatly reduces, and the better and cost of stability is lower.
The present invention is achieved by the following technical solutions, the present invention includes: floating double leaf wind-powered electricity generation machine, be connected in tubular platform and the anchoring mechanism reduce the total system motion amplitude, to improve the stability of a system of being used for of its bottom, wherein:
The tubular platform comprises: connect harmonious absorption plant, seawater ballast tank and the Solid Ballast cabin that arranges from top to bottom successively, wherein: the vibration frequency of harmonious absorption plant is consistent with the second order low frequency movement frequency of floating double leaf wind-powered electricity generation machine, and direction of vibration is opposite with the second order low frequency movement direction of floating double leaf wind-powered electricity generation machine;
Be used for to adjust floating double leaf wind-powered electricity generation machine across the sea floading condition and the seawater ballast tank of stability be hollow-core construction, its outside links to each other with anchoring mechanism;
Solid Ballast cabin for reducing the center of gravity of system is solid construction, is positioned under the centre of buoyancy with the center of gravity that realizes described floating double leaf wind-powered electricity generation machine.Make whole system reach unconditional stability, namely have enough intact stabilities.
Described second order low frequency movement frequency refers to: by second order low frequency wave force excitation and the frequency of the motion that produces, and second order low frequency wave force to be difference owing to two wave frequencies in frequency domain cause.
Described harmonious absorption plant comprises: the cabin body, hang on steel ball and one group of oil hydraulic cylinder in the body of cabin, wherein: the cabin body links to each other with the bottom of floating double leaf wind-powered electricity generation machine, and steel ball is hung by wire rope, forms a single pendulum, and the cycle of this single pendulum is by formula
Calculate, wherein l is rope capacity, g is gravity accleration, adjust the frequency of this harmonious absorption plant in order to make it consistent with precalculated second order low frequency wave force frequency by adjusting rope capacity l, when floating double leaf wind-powered electricity generation machine system ontology moved to a direction, steel ball can produce vibration round about owing to the hysteresis effect of gravity and motion; The bottom of steel ball links to each other with one group of oil hydraulic cylinder, and the other end of oil hydraulic cylinder all links to each other with substrate, and hydraulic cylinder power is provided by a hydraulic power supply provided thereon, and the effect of oil hydraulic cylinder is that the kinetic energy with system vibration is converted into the hydraulic oil friction and the heat energy that produces.
Produced a kind of harmonious resonance between harmonious absorption plant and the floating double leaf wind-powered electricity generation machine, but resonance both sides' direction antithesis, this just can reduce the motion amplitude of floating double leaf wind-powered electricity generation machine under the Second Order effect.
Described floating double leaf wind-powered electricity generation machine is horizontal shaft type double leaf blower fan, comprising: blade, cabin, wheel hub and tower tube, and wherein: the bottom of tower tube links to each other with the tubular platform, and the top connects the cabin, and blade is arranged on the wheel hub;
The cabin comprises: the lower velocity shaft of Lian Jieing, cone gear case, high speed shaft and generator successively, wherein: lower velocity shaft is by vane drive.
Linked to each other by the wedge-shaped structure body between the bottom of described cabin body and floating double leaf wind-powered electricity generation machine.
The quantity of described seawater ballast tank is 2, and structure is made up of a steel cylinder of outside and the shaped steel stiffener that welds thereon.
The described mechanism that anchors comprises: 3 pairs of anchors that are evenly arranged in weight block, the anchor of seawater ballast tank outside and are used for connecting.
Technique effect
The present invention adopts the tubular platform of a suspensive chain type anchoring, produced a kind of harmonious resonance between harmonious absorption plant wherein and the floating double leaf wind-powered electricity generation machine, but resonance both sides' direction antithesis, and this just can reduce the motion amplitude of floating double leaf wind-powered electricity generation machine under the Second Order effect.
Horizontal shaft type double leaf blower fan is compared electrogenesis efficient with the three leaf blower fans that are equal to only can reduce 2-3%, but the stability of blade is higher.And because component reduce and transport lightly, thereby greatly reduce and make and cost of transportation, also can reduce installation cost simultaneously.Adopt the double leaf blower fan also can significantly reduce top weight in addition, the center of gravity that this can reduce whole floating wind-powered electricity generation machine system effectively improves this floating wind-powered electricity generation machine intact stability across the sea greatly.
Description of drawings
Fig. 1 is structural drawing of the present invention;
Fig. 2 is the structural drawing of harmonious absorption plant.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
As shown in Figure 1, present embodiment comprises: floating double leaf wind-powered electricity generation machine, be connected in tubular platform and the anchoring mechanism reduce the system motion amplitude, to improve the stability of a system of being used for of its bottom, wherein:
The tubular platform comprises: the harmonious absorption plant 8 that connect to arrange successively, substrate 9, seawater ballast tank 10,14 and Solid Ballast cabin 16 from top to bottom, wherein: the vibration frequency of harmonious absorption plant 8 is consistent with the second order low frequency movement frequency of floating double leaf wind-powered electricity generation machine, and direction of vibration is opposite with the second order low frequency movement direction of floating double leaf wind-powered electricity generation machine;
Seawater ballast tank 10,14 is hollow-core construction, and its outside links to each other with anchoring mechanism, is used for adjusting floating double leaf wind-powered electricity generation machine system floading condition and stability across the sea;
Solid Ballast cabin 16 is solid construction, the stone of interior dress some in order to lower the center of gravity, guarantees that the center of gravity of whole system is positioned under the centre of buoyancy of floating double leaf wind-powered electricity generation machine system, so that whole floating wind-powered electricity generation machine system reaches unconditional stability, namely have enough intact stabilities.
The bottom in this Solid Ballast cabin 16 arranges a bottom sealing plate 17.
Described second order low frequency movement frequency refers to: by second order low frequency wave force excitation and the frequency of the motion that produces, and second order low frequency wave force to be difference owing to two wave frequencies in frequency domain cause.
As shown in Figure 2, described harmonious absorption plant 8 comprises: the cabin body, hang on steel ball 18, one group of oil hydraulic cylinder 19 in the body of cabin.Wherein: the cabin body links to each other with the bottom of floating double leaf wind-powered electricity generation machine, and steel ball is hung by 4 wire rope, forms a single pendulum, and the cycle of this single pendulum is by formula
Calculate, wherein l is rope capacity, g is gravity accleration, because frequency is the inverse in cycle, just can adjust the frequency of this harmonious absorption plant in order to make it consistent with (having calculated in advance) second order low frequency wave force frequency by adjusting rope capacity l like this when design.When floating double leaf wind-powered electricity generation machine system ontology moved to a direction, steel ball can produce vibration round about owing to the hysteresis effect of gravity and motion.The bottom of steel ball links to each other with oil hydraulic cylinder, the other end of oil hydraulic cylinder links to each other with a substrate 9, this group hydraulic cylinder power is provided by a hydraulic power supply 6 provided thereon, and effect of this group oil hydraulic cylinder is that the kinetic energy with system vibration is converted into the hydraulic oil friction and the heat energy that produces.
Produced a kind of harmonious resonance between harmonious absorption plant 8 and the floating double leaf wind-powered electricity generation machine system, but resonance both sides' direction antithesis, this just can reduce the motion amplitude of floating double leaf wind-powered electricity generation machine under the Second Order effect.
Linked to each other by wedge-shaped structure body 5 between the bottom of described cabin body and floating double leaf wind-powered electricity generation machine.
Described floating double leaf wind-powered electricity generation machine is horizontal shaft type double leaf blower fan, comprising: blade 1, cabin 2, wheel hub 3 and tower tube 4, and wherein: the bottom of tower tube 4 links to each other with the tubular platform, and the top connects cabin 2, and blade 1 is arranged on the wheel hub 3;
The quality of the turbulent wind on the sea, deep-sea is fine, the wind speed height, wind-force is strong and wind speed is stable, a lower velocity shaft rotation in the generator bay 2 is rotated and driven to drive vane 1, a cone gear case and this lower velocity shaft are housed in the cabin 2 to link, lower velocity shaft is converted into high speed shaft to rotate, and driving a generator, the coil cutting magnetic line in the generator produces induced current and sends electric energy.
Described seawater ballast tank 10,14 quantity are 2, and structure is made up of steel cylinder and the welding shaped steel stiffener thereon of outside.
The described mechanism that anchors comprises: 3 pairs of anchors 11,12,13 that are evenly arranged in weight block 15, the anchor of seawater ballast tank 10 and 14 outsides and are used for being connected.
In the present embodiment, the commentaries on classics of blade 1 directly is 118 meters, and the power of generator is 4.5MW, and wheel hub 3 apart from the sea level is 88 meters, and the drinking water of whole cartridge type platform is 118 meters.
Claims (6)
1. the floating double leaf wind-powered electricity generation machine with harmonious absorption plant is characterized in that, comprising: floating double leaf wind-powered electricity generation machine, be connected in tubular platform and the anchoring mechanism reduce the total system motion amplitude, to improve the stability of a system of being used for of its bottom, wherein:
The tubular platform comprises: connect harmonious absorption plant, seawater ballast tank and the Solid Ballast cabin that arranges from top to bottom successively, wherein: the vibration frequency of harmonious absorption plant is consistent with the second order low frequency movement frequency of floating double leaf wind-powered electricity generation machine, and direction of vibration is opposite with the second order low frequency movement direction of floating double leaf wind-powered electricity generation machine;
Be used for to adjust floating double leaf wind-powered electricity generation machine across the sea floading condition and the seawater ballast tank of stability be hollow-core construction, its outside links to each other with anchoring mechanism;
Solid Ballast cabin for reducing the center of gravity of system is solid construction, is positioned under the centre of buoyancy with the center of gravity that realizes described floating double leaf wind-powered electricity generation machine.
2. the floating double leaf wind-powered electricity generation machine with harmonious absorption plant according to claim 1, it is characterized in that, described harmonious absorption plant comprises: the cabin body, hang on steel ball in the body of cabin, one group of oil hydraulic cylinder and substrate, wherein: the cabin body links to each other with the bottom of floating double leaf wind-powered electricity generation machine, steel ball is hung by wire rope, form a single pendulum, the cycle of this single pendulum is by formula
Calculate, wherein l is rope capacity, and g is gravity accleration, adjusts the frequency of this harmonious absorption plant in order to make it consistent with precalculated second order low frequency wave force frequency by adjusting rope capacity l; The bottom of steel ball links to each other with one group of oil hydraulic cylinder, and the other end of oil hydraulic cylinder all links to each other with substrate.
3. the floating double leaf wind-powered electricity generation machine with harmonious absorption plant according to claim 1 and 2, it is characterized in that, described floating double leaf wind-powered electricity generation machine is horizontal shaft type double leaf blower fan, comprise: blade, cabin, wheel hub and tower tube, wherein: the bottom of tower tube links to each other with the tubular platform, the top connects the cabin, and blade is arranged on the wheel hub;
Described cabin comprises: the lower velocity shaft of Lian Jieing, cone gear case, high speed shaft and generator successively, wherein: lower velocity shaft is by vane drive.
4. the floating double leaf wind-powered electricity generation machine with harmonious absorption plant according to claim 3 is characterized in that, is linked to each other by the wedge-shaped structure body between the bottom of described cabin body and floating double leaf wind-powered electricity generation machine.
5. the floating double leaf wind-powered electricity generation machine with harmonious absorption plant according to claim 3 is characterized in that, the described mechanism that anchors comprises: three pairs of anchors that are evenly arranged in weight block, the anchor of seawater ballast tank outside and are used for connecting.
6. the floating double leaf wind-powered electricity generation machine with harmonious absorption plant according to claim 1, it is characterized in that, described second order low frequency movement frequency refers to: by second order low frequency wave force excitation and the frequency of the motion that produces, and second order low frequency wave force to be difference owing to two wave frequencies in frequency domain cause.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102616600A CN103291553A (en) | 2013-06-27 | 2013-06-27 | Floating type double-blade wind generator with harmonic absorption device |
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| CN2013102616600A CN103291553A (en) | 2013-06-27 | 2013-06-27 | Floating type double-blade wind generator with harmonic absorption device |
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| CN201410362409.8A Division CN104265569A (en) | 2013-06-27 | 2013-06-27 | Water floating type double-blade wind-driven generator for second-order low-frequency wave force excitation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925171A (en) * | 2014-04-02 | 2014-07-16 | 上海交通大学 | Heavy-draught multi-column floating foundation of offshore wind turbine |
| CN111361699A (en) * | 2020-04-01 | 2020-07-03 | 中山大学 | Floating wind power platform suitable for near-shore shallow water area |
| CN112249252A (en) * | 2020-10-12 | 2021-01-22 | 广东海洋大学 | Floating platform with balance compensation device |
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| CN202152102U (en) * | 2011-04-19 | 2012-02-29 | 中国科学院工程热物理研究所 | Floating type wind power generation platform |
| US20120063915A1 (en) * | 2010-12-27 | 2012-03-15 | Mitsubishi Heavy Industries, Ltd. | Vibration control apparatus of wind turbine generator and wind turbine generator |
| CN102535674A (en) * | 2012-02-22 | 2012-07-04 | 广东电网公司电力科学研究院 | Tempering damper system used for improving wind resistance stability of transmission tower based on single pendulum model |
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| CN101874159A (en) * | 2007-11-28 | 2010-10-27 | 维斯塔斯风力系统集团公司 | Method for damping oscillations in a wind turbine |
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| CN103925171A (en) * | 2014-04-02 | 2014-07-16 | 上海交通大学 | Heavy-draught multi-column floating foundation of offshore wind turbine |
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| CN112249252A (en) * | 2020-10-12 | 2021-01-22 | 广东海洋大学 | Floating platform with balance compensation device |
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Application publication date: 20130911 |