CN108397332A - A kind of vertical pivot birotor tidal current energy water turbine installing end plate additional - Google Patents

A kind of vertical pivot birotor tidal current energy water turbine installing end plate additional Download PDF

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Publication number
CN108397332A
CN108397332A CN201810134196.1A CN201810134196A CN108397332A CN 108397332 A CN108397332 A CN 108397332A CN 201810134196 A CN201810134196 A CN 201810134196A CN 108397332 A CN108397332 A CN 108397332A
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CN
China
Prior art keywords
hydraulic turbine
blade
end plate
vertical pivot
streamlined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810134196.1A
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Chinese (zh)
Inventor
谢宇
何晓宇
应永良
沈坚
金国强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Provincial Institute of Communications Planning Design and Research Co Ltd
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Zhejiang Provincial Institute of Communications Planning Design and Research Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Provincial Institute of Communications Planning Design and Research Co Ltd filed Critical Zhejiang Provincial Institute of Communications Planning Design and Research Co Ltd
Priority to CN201810134196.1A priority Critical patent/CN108397332A/en
Publication of CN108397332A publication Critical patent/CN108397332A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention discloses a kind of vertical pivot birotor tidal current energy water turbines installing end plate additional, including two vertical pivot lift-type hydroturbine rotors and hydraulic turbine rotary shaft, hydraulic turbine rotary shaft is vertically installed, two rotors share hydraulic turbine rotary shaft, vertically tandem is arranged, and the certain angle that is staggered, so that the corresponding blade of two hydroturbine rotors is misplaced alternate arrangement up and down；Each hydroturbine rotor includes several airfoil fans, streamlined end plate and streamlined connecting rod, airfoil fan is equidistantly spaced from along the hydraulic turbine surfaces of revolution, it is respectively mounted streamlined end plate in the top and bottom of blade, blade is connected to by hydraulic turbine rotary shaft by streamlined connecting rod.The vertical pivot hydraulic turbine of the present invention reduces the influence of blade tip vortex by installing streamlined end plate additional in blade upper and lower ends, improves the hydrodynamic efficiency of the hydraulic turbine by the way that two rotors alternate arrange that misplace is greatly reduced the pulse characteristic of traditional vertical pivot hydraulic turbine.

Description

A kind of vertical pivot birotor tidal current energy water turbine installing end plate additional
Technical field
The invention belongs to Ocean Tidal Current Energy development technique fields, and in particular to a kind of vertical pivot birotor trend installing end plate additional It can the hydraulic turbine.
Background technology
Marine tidal-current energy is seawater fluid dynamic energy entrained in the movement of fluctuation Tidal period, and trend has similar with tidal phenomena Periodic characteristics, more can accurately be predicted in some region of size and Orientation, exploitation gained electric energy be more easy to as electricity Net is received.Since marine tidal-current energy cleaning is renewable and huge in some coastal marine site reserves, thus obtain extensive concern.
Fluid dynamic energy is mainly converted into rotating mechanical energy reconvert into electric energy, water wheels by marine tidal-current energy exploitation by the hydraulic turbine For machine as direct capacitation component, performance is particularly important.Tidal current energy water turbine mainly has vertical pivot and two kinds of structure types of trunnion axis, erects Axis hydraulic turbine rotary shaft is vertical with flow direction of flow, and compared to the trunnion axis hydraulic turbine, sharpest edges are that the hydraulic turbine operates It is not influenced by direction of flow, yaw mechanical system is not required in the environment that trend flows to toward complex transformation；Generator can also simultaneously It is vertically arranged above the hydraulic turbine, do not influence hydraulic turbine flow field.The vertical pivot hydraulic turbine is usually the lift-type hydraulic turbine, that is, is based on the wing Type lift principle, blade profile are aerofoil section, and using 3 or 4 blade shapes, the hydraulic turbine is pushed by the pressure difference of blade both sides Operating；However in blade end, due to the presence of blade pressure at both sides difference, fluid can be flowed to by high pressure side around blade tip Low pressure side forms blade tip vortex, and it is poor that blade tip vortex can weaken blade pressure at both sides, reduces vane efficiency, in turn Influence vertical pivot hydraulic turbine entirety hydrodynamic efficiency.It is uniformly distributed simultaneously as blade is discontinuous in Plane of rotation, vertical pivot water wheels Machine load and output are in more apparent periodically pulsing, more unfavorable to automatically controlled and structure design.Blade it is discontinuous uniformly Distribution also affects the self-starting performance of the vertical pivot hydraulic turbine, is difficult under flow action when the hydraulic turbine is in certain stop positions Voluntarily start.
Invention content
In order to solve the problems, such as traditional vertical pivot lift-type hydraulic turbine load and output ripple, self-starting poor performance, drop simultaneously Low blades end is vortexed the influence to hydraulic turbine hydrodynamic performance, and the present invention provides a kind of vertical pivot birotor tides installing end plate additional The stream energy hydraulic turbine, the hydraulic turbine structure is simple and easily fabricated, will while inheriting tradition vertical pivot lift-type hydraulic turbine advantage The problem of hydraulic turbine load and output ripple, self-starting poor performance, blade tip vortex, substantially improves, and improves the vertical pivot hydraulic turbine Applicability and economy.
A kind of vertical pivot birotor tidal current energy water turbine installing end plate additional, including shaft and be fixed in shaft two turn Son, the shaft is vertically-mounted and upper end is connect with generator shaft, and the mechanical energy to rotate rotor is converted into electric energy； Two rotor structures are identical and along shaft vertical tandem arrangement, and each rotor includes blade, and two rotors are staggered certain angle Degree, i.e., the blade of one rotor need to correspond between the two neighboring blade of another rotor.
Further, the rotor includes 3~4 airfoil fans, and the both ends of the blade is equipped with streamlined end plate, and Both ends of the blade is connect by streamlined connecting rod with shaft, and blade is circumferentially equidistantly spaced from along shaft；Blade upper and lower ends installation stream Line style end plate can reduce end vortex.
The hydraulic turbine of the present invention is by by two rotor tandems and the alternate arrangement that misplaces, keeping the pulse characteristic of two rotors mutual Compensation is finally reached the effect for stablizing output；Before activation, even if one of rotor can profit if being in unfavorable startup position Self-starting is carried out with another rotor；Since the birotor hydraulic turbine increases blade tip quantity, more blade ends can be caused Bilge vortex loses and reduces hydraulic turbine entirety hydrodynamic efficiency；The production of end vortex is reduced by installing end plate additional in blade tip It is raw so that the birotor hydraulic turbine of the present invention can meet or exceed the hydrodynamic efficiency of traditional vertical pivot lift-type hydraulic turbine.
Description of the drawings
Fig. 1 is the structural schematic diagram of vertical pivot birotor tidal current energy water turbine of the present invention.
Fig. 2 is the elevational schematic view of vertical pivot birotor tidal current energy water turbine of the present invention.
Fig. 3 is birotor and single rotor hydraulic turbine detent torque coefficient along azimuthal scatter chart.
Fig. 4 is birotor and single rotor hydraulic turbine output torque coefficient along azimuthal scatter chart.
Fig. 5 (a) installs the motion pattern near streamlined end plate front vane end additional for the blade that numerical simulation obtains.
Fig. 5 (b) is the motion pattern that blade installs near end plate rear blade end additional under the same terms.
In figure：1- airfoil fans, the streamlined end plates of 2-, the streamlined connecting rods of 3-, 4- hydraulic turbine rotary shafts, 5- upper rotor parts, 6- Lower rotor part.
Specific implementation mode
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific implementation mode is to technical scheme of the present invention It is described in detail.
The vertical pivot birotor tidal current energy water turbine overall structure that the present invention installs end plate additional is as depicted in figs. 1 and 2, including upper turn Son 5 and 6 two rotors of lower rotor part and hydraulic turbine rotary shaft 4, hydraulic turbine rotary shaft 4 is vertically-mounted, and upper end can connect generator will Rotating mechanical energy is converted into electric energy, and each hydroturbine rotor includes several airfoil fans 1, streamlined end plate 2 and streamlined Connecting rod 3, airfoil fan 1 are equidistantly spaced from along the hydraulic turbine surfaces of revolution, and streamlined end plate 2 is respectively mounted in the top and bottom of blade 1, Blade 1 and end plate 2 are connected to hydraulic turbine rotary shaft 4 by streamlined connecting rod 3；Upper rotor part 5 and lower rotor part 6 share hydraulic turbine rotation Shaft 4, vertically tandem is arranged, and the certain angle installation that is staggered, and the blade of each rotor is made to be in another rotor pair Answer the centre position of two adjacent blades.
Single vertical pivot hydroturbine rotor is since load is in blade with output along the discontinuous distribution of Plane of rotation, rotation process Existing periodically pulsing；It, can by by the alternate arrangement of two hydroturbine rotors dislocation, the pulse characteristic peak valley of two rotors being made to offset To obtain relatively stable load, output state and self-starting performance；Define zero dimension moment coefficient T*It is as follows：
T*=T/ ρ U2C2L
In formula：T is hydraulic turbine gained hydrodynamic force torque under flow action, and ρ is fluid density, and U is speed of incoming flow, C and L The respectively chord length and length of blade.
Detent torque of the vertical pivot birotor and the single rotor hydraulic turbine obtained by numerical simulation in different stop positions Coefficient is distributed as shown in figure 3, the circle of different radii represents the size of detent torque coefficient, the angle index outside circle in Fig. 3 Position represents the corresponding value of hydroturbine rotor azimuth angle theta.As seen from Figure 3, single rotor hydraulic turbine detent torque is along orientation Angle changes greatly, and is negative value in certain orientation angular zones, even if starting to start in high start torque region, turns when due to starting Speed is relatively low, it is also possible to stops again when entering unfavorable startup position, and the detent torque of the birotor hydraulic turbine becomes along azimuth Change is smaller, and is positive value, is conducive to the smooth starting of the hydraulic turbine.Fig. 4 is birotor and the single rotor hydraulic turbine in best effort Moment coefficient curve when tip-speed ratio, it can be seen that compare the single rotor hydraulic turbine, the output of the birotor hydraulic turbine is extremely stablized, effect It will also be greatly reduced in the load pulsation of output end.
It is 1.875 to hydraulic turbine diameter and blade vertical extension (length) ratio by laboratory physical model experiment Single three blade hydraulic turbines rotator model is tested, and being as a result shown in the streamlined end plate of blade upper and lower end parts installation can be same Under the conditions of make hydraulic turbine hydrodynamic efficiency promoted about 7%.Numerical simulation result is shown, does not install streamlined end plate additional in blade tip When, have and form end vortex compared with multi-fluid around blade tip, as shown in Fig. 5 (a)；After installing end plate additional, blade tip vortex is big It is big to reduce, as shown in Fig. 5 (b), and then improve the hydrodynamic efficiency of blade and the hydraulic turbine.
The above-mentioned description to embodiment can be understood and applied the invention for ease of those skilled in the art. Person skilled in the art obviously easily can make various modifications to above-described embodiment, and described herein general Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability Field technique personnel announcement according to the present invention, the improvement made for the present invention and modification all should be in protection scope of the present invention Within.

Claims (2)

1. a kind of vertical pivot birotor tidal current energy water turbine installing end plate additional, it is characterised in that：Including shaft and it is fixed on shaft On two rotors, the shaft is vertically-mounted and upper end is connect with generator shaft, to the mechanical energy for rotating rotor It is converted into electric energy；Two rotor structures are identical and along the vertical tandem arrangement of shaft, and each rotor includes blade, two rotors Be staggered certain angle, i.e., the blade of one rotor need to correspond between the two neighboring blade of another rotor.
2. vertical pivot birotor tidal current energy water turbine according to claim 1, it is characterised in that：The rotor includes 3~4 A airfoil fan, the both ends of the blade is equipped with streamlined end plate, and both ends of the blade is connect by streamlined connecting rod with shaft, leaf Piece is circumferentially equidistantly spaced from along shaft.
CN201810134196.1A 2018-02-09 2018-02-09 A kind of vertical pivot birotor tidal current energy water turbine installing end plate additional Pending CN108397332A (en)

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CN201810134196.1A CN108397332A (en) 2018-02-09 2018-02-09 A kind of vertical pivot birotor tidal current energy water turbine installing end plate additional

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109869268A (en) * 2019-04-09 2019-06-11 大连理工大学 A kind of double vertical pivot rotor tidal current energy water turbine electricity generation systems
CN111677627A (en) * 2020-06-03 2020-09-18 河南恒聚新能源设备有限公司 Turbine rotor assembly for vertical axis wind power generation system and power generation system
CN112392646A (en) * 2020-04-13 2021-02-23 徐树强 Novel vertical axis tidal current energy conversion device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1062192A (en) * 1990-12-04 1992-06-24 徐文澄 Unit construction cylindrical vertical shaft wind-mill generator
CN101956670A (en) * 2010-09-17 2011-01-26 青海风发科技发展有限公司 Vertical axis wind turbine with multilayer wind wheels
CN102748207A (en) * 2012-08-13 2012-10-24 赵立华 blades and impeller of vertical-shaft wind power generator
CN103277246A (en) * 2013-06-14 2013-09-04 河海大学常州校区 Vertical-axis wind turbine with double wind wheels capable of rotating coaxially and oppositely
CN203476602U (en) * 2013-07-08 2014-03-12 广州市香港科大霍英东研究院 Small combined vertical axis wind turbine
CN103939281A (en) * 2014-04-29 2014-07-23 苏州飞能可再生能源科技有限公司 Low-gravity-center efficient vertical axis wind turbine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1062192A (en) * 1990-12-04 1992-06-24 徐文澄 Unit construction cylindrical vertical shaft wind-mill generator
CN101956670A (en) * 2010-09-17 2011-01-26 青海风发科技发展有限公司 Vertical axis wind turbine with multilayer wind wheels
CN102748207A (en) * 2012-08-13 2012-10-24 赵立华 blades and impeller of vertical-shaft wind power generator
CN103277246A (en) * 2013-06-14 2013-09-04 河海大学常州校区 Vertical-axis wind turbine with double wind wheels capable of rotating coaxially and oppositely
CN203476602U (en) * 2013-07-08 2014-03-12 广州市香港科大霍英东研究院 Small combined vertical axis wind turbine
CN103939281A (en) * 2014-04-29 2014-07-23 苏州飞能可再生能源科技有限公司 Low-gravity-center efficient vertical axis wind turbine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109869268A (en) * 2019-04-09 2019-06-11 大连理工大学 A kind of double vertical pivot rotor tidal current energy water turbine electricity generation systems
CN109869268B (en) * 2019-04-09 2023-12-22 大连理工大学 Double-vertical-shaft rotor tidal current energy water turbine power generation system
CN112392646A (en) * 2020-04-13 2021-02-23 徐树强 Novel vertical axis tidal current energy conversion device
CN111677627A (en) * 2020-06-03 2020-09-18 河南恒聚新能源设备有限公司 Turbine rotor assembly for vertical axis wind power generation system and power generation system
CN111677627B (en) * 2020-06-03 2022-02-25 河南恒聚新能源设备有限公司 Turbine rotor assembly for vertical axis wind power generation system and power generation system

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Application publication date: 20180814

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