CN103321825B - Tidal current energy capturing water turbine with changeable blade gestures - Google Patents
Tidal current energy capturing water turbine with changeable blade gestures Download PDFInfo
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- CN103321825B CN103321825B CN201310291232.2A CN201310291232A CN103321825B CN 103321825 B CN103321825 B CN 103321825B CN 201310291232 A CN201310291232 A CN 201310291232A CN 103321825 B CN103321825 B CN 103321825B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000008010 sperm capacitation Effects 0.000 claims description 14
- 230000002411 adverse Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001144 postural effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- Y02E10/20—Hydro energy
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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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The invention discloses a tidal current energy capturing water turbine with changeable blade gestures. The tidal current energy capturing water turbine comprises a water turbine unit, and a fairing matched with the water turbine unit is arranged below the water turbine unit. The water turbine unit comprises an impeller, wherein blades in an even number and more than four are evenly fixed on an impeller hub to form the impeller in a hinged mode; the blade is of an arc structure, two opposite blades are connected through a blade interlocking mechanism to form a blade set. The blade interlocking mechanism comprises hinge pin bases, a connection rod and hinge pins, the hinge pin bases are fixed on the concave side faces of the blades, the connection rod penetrates through the impeller hub, and the two ends of the connection rod are hinged to the hinge pin bases through the hinge pins; the blade sets enable the blades to change gestures on the impeller hub through water flow self-action so that periodic opening and closing can be achieved, the blades on the downstream side are opened to capture water energy, and the opposite blades on the upstream side are closed and attached to the impeller hub. The tidal current energy capturing water turbine can be arranged on the seabed in a transverse-shaft mode and also can be floatingly arranged in a vertical-shaft mode, therefore, power generation devices can be large-size conveniently, and operation stability and self-starting performance are good.
Description
Technical field
The present invention relates to the marine tidal-current energy capacitation water turbine that a kind of blade posture is variable, it belongs to marine tidal-current energy, water flow energy develop and uses technical field.
Background technique
Ocean energy is as the important component part of renewable energy sources, and exploitation prospect is very wide.Marine tidal-current energy is one of principal mode of ocean energy, has the features such as reserves are large, regularity is strong, measurable, develops attention.Generating is the major way that marine tidal-current energy develops, and the core of marine tidal-current energy generating is the capacitation water turbine of catching seawater kinetic energy.
At present, the capacitation water turbine in marine tidal-current energy generation technology has lift formula, resistance type and rises resistance hybrid from the consideration of capacitation principle, considers have the straight leaf formula of transverse axis rotary propeller type, transverse axis, vertical pivot ring leaf and vertical axis straight blade type etc. from structure.No matter consider from principle or consider from structural type, the main target that water turbine research institute is pursued how to reduce seawater stream to water turbine resistance, increases the driving force of seawater stream, improves water turbine capacitation efficiency.Harbin Engineering University's patent of invention " the straight leaf formula self adaption variable pitch water turbine for marine tidal-current energy conversion " (publication number: CN1439805) utilizes spring mechanism to change attack angle of blade, and then improves turbine characteristics.Zhejiang University's patent of invention " Collapsible paddle ocean current energy generator " (publication number: CN1888420) is a kind of horizontal turbine, utilizes shrinking structure to reduce the resistance of incoming flow suffered by water turbine.Chinese Marine University's " self-adapting flexible vane rotor " (publication number: CN101457738) uses flexible blade rotor to obtain the larger torque of specific rigidity blade.It is stressed that University Of Tianjin " self-regulation ocean current energy generator " (publication number: CN1963183) utilizes sensory technique to improve water turbine according to the size and Orientation of ocean current by the angle and the degree of depth adjusting blade.Be all adopt input control mode in existing tidal power generating technology, reduce resistance suffered by turbine impeller by change leaf position or angle.
Summary of the invention
The object of this invention is to provide the marine tidal-current energy capacitation water turbine that a kind of blade posture is variable, it is by blade postural change, and ensure the upright blade capacitation of following current side, provide rotor turns power, the overturning of adverse current lateral lobe sheet is affixed to impeller hub, reduces wheel rotation resistance; And adopt flow guide structure, when making incoming flow flow through air guide sleeve from side, part adverse current is changed to following current, reduce adverse current side flow rate of water flow, increase following current side flow rate of water flow, when incoming flow flows through air guide sleeve from opposite side, following current side flow rate of water flow is increased, thus when ensureing that different trend flows to, all can increase the flow rate of water flow flowing through following current lateral lobe sheet, make more marine tidal-current energy be converted into turbine mechanical energy.
The present invention adopts following technical proposals:
The marine tidal-current energy capacitation water turbine that blade posture is variable, comprises water turbine set, is provided with the air guide sleeve matched with it below water turbine set.
More than 4 even number sheet blades to be evenly fixed on impeller hub by articulated manner and to form impeller by described water turbine set; Described blade adopts arcuate structure, and relative two panels blade is connected together by blade interlocking gear, forms vane group; Described blade interlocking gear comprises axis pin base, connecting rod and bearing pin, and axis pin base is fixed on blade concave side, and connecting rod is through impeller hub, and two ends and axis pin base pass through hinge; Described vane group, by current self-applying, makes following current lateral lobe sheet open, and obtains water flow energy, and adverse current side relative vane is closed to be attached on impeller hub, and with the folding of wheel rotation cycle.
Described vane group is evenly arranged in impeller hub circumference, at least two groups.
Described air guide sleeve side is airfoil camber, and opposite side is arc-shaped curved surface, and the flow rate of water flow flowing through following current lateral lobe sheet during two-way incoming flow is increased.
The invention has the beneficial effects as follows:
1, the present invention is by blade interlocking gear, and utilize trend current automatically to adjust blade postural change, make the upright blade capacitation of following current district, countercurrent zone blade overturning is affixed to wheel hub, ensures that impeller is monolateral stressed, obtains larger moment of rotation, obtain more flow energy.
2, special flow guide structure is adopted, when making incoming flow flow through air guide sleeve from side, part adverse current becomes following current, reduce countercurrent zone flow rate of water flow, increase following current district flow rate of water flow, when incoming flow flows through air guide sleeve from opposite side, air guide sleeve can increase following current district flow rate of water flow, thus all can increase the flow rate of water flow acted on following current district blade when realizing trend two-way flow, make more marine tidal-current energy be converted into the mechanical energy of water turbine.
3, adopt arc shaped blade, make blade obtain larger hydro-flow thrust, water turbine flows down at low speed still has good self-starting performance.
4, water turbine can be arranged by transverse axis, and seabed is installed, and adopts bottom side water conservancy diversion; Also can arrange by vertical pivot, floating installation, now adopt antisymmetry flow guide structure, bilateral guide, mounting type is flexible.
5, the present invention can be used for the comprehensive development and utilization of river waterflow energy, Ocean Tidal Current Energy and land wind energy.
Accompanying drawing explanation
Fig. 1 is that hydraulic turbine structure of the present invention is formed and working principle schematic diagram;
Fig. 2 (a), Fig. 2 (b) be respectively right side and left side incoming flow time capacitation schematic diagram of the present invention;
Fig. 3 is blade interlocking gear structure configuration diagram;
In figure: 1, blade, 1a, following current lateral lobe sheet, 1b, adverse current side relative vane, 2, blade interlocking gear, 3, impeller hub, 4, bearing support, 5, air guide sleeve, 5a, airfoil camber, 5b, arc-shaped curved surface, 6, frame, 7, generator, 8, coupling, 9, speed increaser, 10, cabin, 11, water turbine output shaft, 12, axis pin base, 13, connecting rod, 14, bearing pin.Embodiment:
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the present invention is the variable marine tidal-current energy capacitation water turbine of a kind of blade posture, and comprise frame, described upper rack is provided with water turbine set and generator set, is provided with the air guide sleeve be installed in frame below water turbine set.
More than 4 even number sheet blades 1 to be evenly fixed on impeller hub 3 by articulated manner and to form impeller by water turbine set; Blade adopts arcuate structure, and relative two panels blade is connected together by blade interlocking gear 2, forms vane group; As shown in figures 1 and 3, blade interlocking gear 2 comprises axis pin base 12, connecting rod 13 and bearing pin 14, and axis pin base 12 is fixed on blade concave side, and connecting rod 13 is through impeller hub 3, it is hinged that two ends and axis pin base 12 pass through bearing pin 14, and Fig. 3 gives the structure configuration diagram of blade interlocking gear; Vane group, by current self-applying, makes following current lateral lobe sheet 1a open, and obtains water flow energy, and adverse current side relative vane 1b is closed to be attached on impeller hub 3, and with the folding of wheel rotation cycle.
Impeller two ends are fixed in frame 6 by bearing support 4, and as shown in Figure 1, bearing support 4 adopts water-lubricated slide bearing support, and frame 6 adopts steel welding construction; Air guide sleeve 5 is fixed in frame, and side is airfoil camber 5a, and opposite side is arc-shaped curved surface 5b, and the flow rate of water flow flowing through following current lateral lobe sheet 1a during two-way incoming flow is increased.
Vane group is evenly arranged in impeller hub 3 circumference, at least two groups.
Fig. 1 is that hydraulic turbine structure of the present invention is formed and working principle schematic diagram, assuming that flow direction be vertical paper inwards, water turbine entirety adopts horizontal shaft type cylindrical structure, and its running shaft is vertical with water (flow) direction, and expression, show but one group of vane group in figure for convenience.
Capacitation principle of the present invention signal when Fig. 2 (a), (b) are respectively right side, left side incoming flow.
As shown in Fig. 2 (a), when right side incoming flow (in figure, arrow points is flow direction) flows through air guide sleeve 5, blade 1a is opened in adverse current (current that inverse impeller turns to) following current side of leading by air guide sleeve airfoil camber 5a, make to flow through the flow rate of water flow reduction that adverse current side closes blade 1b, flow through the flow rate of water flow increase that blade 1a is opened in following current side; When current flow counterflow through water turbine, as shown in Fig. 2 (b), air guide sleeve arc-shaped curved surface 5b will assemble following current, make to flow through the flow rate of water flow increase that blade 1a is opened in following current side.
As shown in Fig. 2 (a), following current district upright blade, as blade 1a, bourn acting force drives impeller suffered by forward face is rotated.In wheel rotation process, following current district blade progresses into countercurrent zone, and bourn acting force suffered by blade convex surface makes blade be affixed to impeller rotary drum, until be attached on impeller rotary drum, as blade 1b, makes resistance to water-flow square suffered by impeller minimum.Meanwhile, blade interlocking gear 2 makes to progress into following current district relative vane and leaves impeller rotary drum, opens gradually, from current, obtains driving force.Along with wheel rotation, two blade alternate foldings in every vane group, make impeller one-sided stressed all the time, and under identical flow rate of water flow, suffered moment of rotation is maximum.When current are reverse, become following current district on the downside of impeller, upside becomes countercurrent zone, and under flow action, impeller turns to constant, as shown in Fig. 2 (b).In embodiment as shown in Figure 1, water turbine output shaft 11 side (in figure left side) is provided with cabin 10, and cabin is built with speed increaser 9 and generator 7; As the case may be, vane rotary move through coupling 8 directly drive electrical generators 7 to generate electricity or drive electrical generators 7 generates electricity after speed increaser 9 speedup.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on technical solution of the present invention basis, those skilled in the art do not need to pay creative work and can make various amendment or be out of shape still within protection scope of the present invention.
Claims (3)
1. the marine tidal-current energy capacitation water turbine that blade posture is variable, it is characterized in that, comprise water turbine set, be provided with the air guide sleeve matched with it below water turbine set, described water turbine set comprises the impeller be evenly fixed on by more than 4 even number sheet blades by articulated manner on impeller hub; Described blade adopts arcuate structure, and relative two panels blade is connected together by blade interlocking gear, forms vane group; Described blade interlocking gear comprises axis pin base, connecting rod and bearing pin, and axis pin base is fixed on blade concave side, and connecting rod is through impeller hub, and two ends and axis pin base pass through hinge; Described vane group makes blade posture on impeller hub change by the self-applying of current, the folding of property performance period, and following current lateral lobe sheet opens, and obtains water flow energy, and adverse current side relative vane is closed to be attached on impeller hub.
2. water turbine as claimed in claim 1, it is characterized in that, described vane group has been evenly arranged at least two groups around impeller hub circumference.
3. water turbine as claimed in claim 1, it is characterized in that, described air guide sleeve side is airfoil camber, and opposite side is arc-shaped curved surface, when the two-way incoming flow of current, makes to flow through the flow rate of water flow increase that blade is opened in following current district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291232.2A CN103321825B (en) | 2013-07-11 | 2013-07-11 | Tidal current energy capturing water turbine with changeable blade gestures |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310291232.2A CN103321825B (en) | 2013-07-11 | 2013-07-11 | Tidal current energy capturing water turbine with changeable blade gestures |
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| CN103321825A CN103321825A (en) | 2013-09-25 |
| CN103321825B true CN103321825B (en) | 2015-06-17 |
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| WO2018185575A1 (en) * | 2017-04-05 | 2018-10-11 | Nitin Kadam | Onshore tidal power generation device |
| CN107489589A (en) * | 2017-10-20 | 2017-12-19 | 李运雄 | A kind of marine power generation device |
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| CN111912620A (en) * | 2020-06-23 | 2020-11-10 | 河海大学 | Horizontal axis tidal current energy water turbine experimental device based on laser range finder and experimental method thereof |
| CN114542355B (en) * | 2022-02-10 | 2023-07-18 | 国网福建省电力有限公司电力科学研究院 | Variable-pitch disc turbine type water wheel device |
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| CN201963461U (en) * | 2011-04-18 | 2011-09-07 | 浙江海洋学院 | Multidirectional adaptive suspended tidal current turbine |
| CN202360285U (en) * | 2011-12-13 | 2012-08-01 | 浙江海洋学院 | Vertical shaft water turbine |
| JP2012224140A (en) * | 2011-04-18 | 2012-11-15 | Bellsion:Kk | Blade of rotor for fluid equipment |
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- 2013-07-11 CN CN201310291232.2A patent/CN103321825B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU659779A1 (en) * | 1977-07-14 | 1979-04-30 | Московский Ордена Трудового Красного Знамени Инженерно-Строительный Институт Им. В.В.Куйбышева | Method of starting two-position control reversible hydraulic aggregate |
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