CN107829873A - A kind of tidal current energy water turbine based on double runner - Google Patents

A kind of tidal current energy water turbine based on double runner Download PDF

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Publication number
CN107829873A
CN107829873A CN201710880362.8A CN201710880362A CN107829873A CN 107829873 A CN107829873 A CN 107829873A CN 201710880362 A CN201710880362 A CN 201710880362A CN 107829873 A CN107829873 A CN 107829873A
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China
Prior art keywords
spiral vane
lituus
runner
kuppe
rotary shaft
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CN201710880362.8A
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Chinese (zh)
Inventor
郑源
臧伟
李东阔
张玉全
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Hohai University HHU
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Hohai University HHU
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Priority to CN201710880362.8A priority Critical patent/CN107829873A/en
Publication of CN107829873A publication Critical patent/CN107829873A/en
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    • 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
    • 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
    • F03B3/126—Rotors for essentially axial flow, e.g. for propeller turbines
    • 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
    • F03B3/16—Stators
    • F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/15—Geometry two-dimensional spiral
    • 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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Hydraulic Turbines (AREA)

Abstract

The present invention relates to a kind of tidal current energy water turbine based on double runner, including kuppe, rotary shaft, wheel hub and the blade being fixed on the wheel hub, it is characterized in that, also include energization runner, the energization runner is located at the exit of kuppe, the energization runner includes lituus spiral vane, wherein：The lituus spiral vane is the axially gradually stretching along rotary shaft according to lituus helix, in space crossed distorted shape and it is uniformly set in the inner circumferential wall of rotary shaft, X represents the space abscissa value of key point on the section Curve of wing of lituus spiral vane, and Y represents the space ordinate value of key point on the section Curve of wing of lituus spiral vane.The structure of invention is simple, efficiency high, can be not only used for the hydraulic turbine of Ocean Tidal Current Energy generating, can also generate electricity use under the conditions of the small marine tidal-current energies such as mountain area, Plain, mountain spring and dyke stream.

Description

A kind of tidal current energy water turbine based on double runner
Technical field
The invention belongs to fluid machinery and hydroelectric project equipment technical field, more particularly to a kind of tide based on double runner Stream can the hydraulic turbine.
Background technology
Countries in the world today has been placed on hydroelectric resource development the preferential position of energy development.China's hydraulic power potentials total amount is very rich Richness, only not middle and high head resource, and 0.8~1.0 hundred million kilowatts of low water head resource (containing marine tidal-current energy) is there is also about, exploitation profit Marine energy is particularly developed with new energy and is generated electricity has great development potentiality.It is to rely on tide stream that energy by ocean current, which generates electricity, Impulsive force makes the hydraulic turbine rotate at a high speed, then drives electrical power generators, it is not necessary to create initial pressure compared with high water head, only rely on The flow velocity of tide stream can be achieved with generating electricity, and its economic value is very notable.
One of turbine impeller part the most key as tide stream generating set, the performance of impeller directly affect whole The performance of individual unit, its manufacturing cost have also accounted for 20% or so of whole generating set.Traditional humble head hydraulic turbine Impeller blade typically distorts tubular blade using asymmetric, and extra large marine tidal-current energy water turbine uses for reference fan blade mostly, and two Person's applicable elements and range of operation are different, and blade wheel structure is complicated, and manufacturing cost is higher, and operational efficiency is relatively low.
Chinese patent application 201310496139 discloses " a kind of ocean current energy power generation type impeller of water turbine with flow guide cover ", The program includes rotating shaft and wheel hub and the blade being fixed on wheel hub, and the rotating shaft, wheel hub and blade are placed in leaf Wheel is indoor, and blade wheel chamber both ends are respectively influent side and water outlet side, and current flow to water outlet side vertically from influent side, and wheel hub uses ball Face shape, facilitate blade is installed on fixation, so as to improve the acting ability of blade.But the program also has the following disadvantages：When Kuppe is simple in construction, it is impossible to plays preferable cumulative action, directly affects economic performance；Second, belong to single-stage energy by ocean current water wheels Machine, generated electricity using energy by ocean current less efficient.
Chinese patent application 201310496522.0, which discloses a kind of energy by ocean current and generated electricity, has the hydraulic turbine of kuppe two-way Impeller, including rotating shaft in blade wheel chamber and wheel hub and it is fixed on " S " type leaf that quantity on wheel hub is 5~7 Piece；Blade wheel chamber both sides are respectively influent side and water outlet side；When forward direction generates electricity, current flow to vertically by kuppe from influent side Water outlet side, during reverse power generation, current are then axially to flow to influent side by water outlet side.Although the program is in the ocean current of two-way flow Under, ocean current kinetic energy can be efficiently converted, but also have the following disadvantages：First, belonging to the single-stage energy by ocean current hydraulic turbine, ocean current is utilized It can generate electricity less efficient；Second, turbine blade design still falls within traditional design theory, aerofoil profile is excessively simple, it is impossible to very Good utilization flows through the water energy of runner.
Chinese patent application 201210342709 discloses " band guide cover type elliptical orbit vertical shaft tidal hydraulic turbine generating Unit, the device include kuppe, rail brackets, oval guide rail, linear bearing, leading arm, prismatic blade etc..Although using water conservancy diversion Cover improves the cumulative effect to marine tidal-current energy, but also has the following disadvantages：First, its vertical shaft blade is set using single elliptical blade Meter, it is impossible to which efficient power output is provided；Second, belonging to the single-stage energy by ocean current hydraulic turbine, generated electricity using energy by ocean current less efficient.
In summary, how to overcome the shortcomings of to turn into current fluid machinery and hydroelectric project equipment present in prior art One of emphasis problem urgently to be resolved hurrily in technical field.
The content of the invention：
The purpose of the present invention is to provide a kind of tidal current energy water turbine based on double runner for overcome the deficiencies in the prior art, The present invention structure it is simple, efficiency high, can be not only used for Ocean Tidal Current Energy generating the hydraulic turbine, also can mountain area, Plain, mountain spring with And generate electricity and use under the conditions of the small marine tidal-current energy such as dyke stream.
According to a kind of tidal current energy water turbine based on double runner proposed by the present invention, including kuppe, rotary shaft, wheel hub with And the blade on the wheel hub is fixed on, the rotary shaft, wheel hub and blade are placed in kuppe, it is characterised in that also Including energization runner, the energization runner includes lituus spiral vane, wherein：The lituus spiral vane is According to lituus helix along rotary shaft axially gradually stretching, in space crossed distorted shape and be uniformly set at turn In the inner circumferential wall of moving axis, the intersection point in each section of the lituus spiral vane of the surfaces of revolution is centered on the rotary shaft Origin establishes coordinate system, and the lituus spiral vane is on rotary shaft periphery, the axially different section aerofoil profile under The coordinate of key point on curve represents that X is represented on the section Curve of wing of lituus spiral vane as follows The space abscissa value of key point, the space that Y represents the key point on the section Curve of wing of lituus spiral vane are indulged Coordinate value, the parameter of the section aerofoil profile of lituus spiral vane apart from the leading edge axial direction of wheel hub at 102cm referring to table 1,
Table 1：
Two curvilinear equations after fitting are respectively：
The left string of lituus spiral vane：Y=0.0011x2-0.2253x+1.6783；
The right string of lituus spiral vane：Y=-0.3354x-0.0114；
Parameter of the section aerofoil profile of lituus spiral vane apart from the leading edge axial direction of wheel hub at 132cm referring to table 2,
Table 2：
Sequence number X Y Sequence number X Y
1 -45.826 75.281 7 -35.12 79.78
2 -43.305 71.081 8 -33.169 75.348
3 -38.268 62.677 9 -29.266 66.483
4 -33.241 54.268 10 -25.364 57.619
5 -28.228 45.85 11 -21.462 48.754
6 -23.237 37.419 12 -17.56 39.89
Two curvilinear equations after fitting are respectively,
The left string of lituus spiral vane：Y=-0.0001x3-0.0054x2-1.8462x-3.3769；
The right string of lituus spiral vane：Y=-2.2714x+0.0025；
Parameter of the section aerofoil profile of lituus spiral vane apart from the leading edge axial direction of wheel hub at 192cm referring to table 3,
Table 3：
Sequence number X Y Sequence number X Y
1 30.382 -47.191 7 24.831 -49.929
2 33.669 -52.495 8 27.59 -55.477
3 40.261 -63.091 9 33.108 -66.572
4 46.871 -73.677 10 38.626 -77.667
5 53.492 -84.255 11 44.145 -88.763
6 60.121 -94.829 12 49.663 -99.858
Two curvilinear equations after fitting are respectively：
The left string of lituus spiral vane：Y=0.003x2-1.7248x+3.2307；
The right string of lituus spiral vane：Y=-2.0113x+0.0056；
The radius of the lituus spiral vane is scalable, the maximum radius of the lituus spiral vane RmaxWith the outlet diameter D of kuppe3Ratio be 0.92；The least radius R of the lituus spiral vaneminWith it is chain The maximum radius R of flight auger shape blademaxRatio be 0.8.
The present invention realization principle be：The present invention concrete application process be：When current flow into tide from kuppe water inlet After the stream energy hydraulic turbine, basic runner and energization runner are done work successively, rotated simultaneously after external force suffered by double runner, and then is driven Main shaft rotates, and then passes torque to the generating set being attached thereto and generates electricity, marine tidal-current energy is converted into electric energy.Wherein chain spiral shell Line spiral vane can be adjusted to the radius of different spiral vanes according to tidal current speed difference, greatly ensure that energization runner The stability of rotation；After water outflow energization runner, export and flow out from kuppe.Because energization runner can will flow out basic runner The kinetic energy of current be again converted into the rotating mechanical energy of runner, so as to solve the difficulty of water energy multiple energy conversion well Topic, the power output of tidal current energy water turbine is improved, to strengthen the efficiency of tidal current energy water turbine.Meanwhile the hydraulic turbine of the invention The lituus spiral vane at rear is radially possessing variable cross-section function, and it is chain that it uses the retractor device of metal hinge to cause Flight auger shape blade radius is variable, so that kuppe exit flow can adjust, further improves the tune of the hydraulic turbine Save power.
Its remarkable advantage is the present invention compared with prior art：
First, the tidal current energy water turbine proposed by the present invention based on double runner, specifically utilized in basic runner marine tidal-current energy On the basis of set up energization runner so that in the case of identical marine tidal-current energy, tidal current energy water turbine of the invention can turn to current Change rate to increased on the basis of existing basic runner, energization significant effect, be used to send out so as to improve tidal current energy water turbine The conversion power of electricity.
Second, spiral vane of the invention is in lituus helix shape, to be stretched along the axial gradual change of rotary shaft Formation spatial warping shape, which is uniformly set on the periphery of rotary shaft, is uniform speed rotation, greatly reduces hydraulic friction Collision, reduces trend after basic runner, the energy loss of the trend reused, so as to improve tidal current energy water turbine Capacitation effect；
3rd, the structural stability of tidal current energy water turbine of the invention is good, the effective time is long and efficiency high, can conduct The upgraded product of prior art, the various hydraulic turbines for utilizing marine tidal-current energy to generate electricity suitable for substituting this area.
4th, the lituus spiral vane at tidal current energy water turbine rear of the invention is radially possessing variable cross-section work( Can, it uses the retractor device of metal hinge make it that blade radius is variable, so that kuppe exit flow can adjust, enters One step improves the regulating power of tidal current energy water turbine.
Brief description of the drawings：
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the impeller overall structure diagram of the present invention.
Fig. 2 is the schematic diagram of each part dimension relation of impeller of the present invention.
Fig. 3 is the dimensional structure diagram of the lock flight auger shape blade of the present invention.
Fig. 4 is the lituus helix structure schematic diagram of the lituus spiral vane of the present invention.
Fig. 5 is the dimensional structure diagram of the double runner of the present invention.
Fig. 6 is the section aerofoil profile of the lituus spiral vane of the present invention apart from the leading edge axial direction of wheel hub at 102cm Spiral vane section molded line schematic diagram.
Fig. 7 is the section aerofoil profile of the lituus spiral vane of the present invention apart from the leading edge axial direction of wheel hub at 132cm Spiral vane section molded line schematic diagram.
Fig. 8 is the section aerofoil profile of the lituus spiral vane of the present invention apart from the leading edge axial direction of wheel hub at 192cm Spiral vane section molded line schematic diagram.
Numbering explanation in accompanying drawing：Kuppe 1, rotating shaft 2, wheel hub 3, blade 4, impeller influent side 5, impeller water outlet side 6, company Lock flight auger line blade 7, the diameter D of impeller0, kuppe 1 inlet diameter D2, kuppe 1 outlet diameter D3, wheel hub 3 Diameter Dh, wheel hub 3 length L0, kuppe 1 interlude length L1, kuppe 1 inducer length L2, kuppe 1 The length L of outlet section3, lituus spiral blade 7 of the lituus spiral blade 7 when being in radius minimum state most Large radius Rmin, lituus spiral blade 7 of the lituus spiral blade 7 when being in radius maximum rating maximum half Footpath Rmax。
Embodiment：
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1.
With reference to Fig. 1 to Fig. 8, a kind of tidal current energy water turbine based on double runner proposed by the present invention, including kuppe 1, turn Moving axis 2, wheel hub 3 and the blade 4 being fixed on the wheel hub 3, the rotary shaft 2, wheel hub 3 and blade 4 are placed in water conservancy diversion In cover 1, in addition to energization runner, the energization runner include lituus spiral vane 7, wherein：The lituus spiral shell Rotation shape blade 7 is the axially gradually stretching along rotary shaft 2 according to lituus helix, in space crossed distorted shape and uniform Distribution is arranged in the inner circumferential wall of rotary shaft 2, the lituus spiral vane 7 of the surfaces of revolution centered on the rotary shaft 2 The intersection point in each section establish coordinate system for origin, the lituus spiral vane 7 is on the periphery of rotary shaft 2, not coaxially Represent that X represents lituus spiral vane 7 as follows to the coordinate of the key point on the section Curve of wing under Section Curve of wing on key point space abscissa value, Y represents the section Curve of wing of lituus spiral vane 7 On key point space ordinate value, the section aerofoil profile of lituus spiral vane 7 is apart from the leading edge axial direction of wheel hub 3 Parameter at 102cm referring to table 1,
Table 1：
Sequence number X Y Sequence number X Y
1 34.951 -5.22 7 32.947 -11.081
2 38.823 -5.907 8 36.608 -12.313
3 46.571 -7.26 9 43.929 -14.775
4 54.322 -8.593 10 51.251 -17.238
5 62.076 -9.912 11 58.573 -19.7
6 69.831 -11.222 12 65.894 -22.163
Two curvilinear equations after fitting are respectively：
The left string of lituus spiral vane 7：Y=0.0011x2-0.2253x+1.6783；
The right string of lituus spiral vane 7：Y=-0.3354x-0.0114；
Parameter of the section aerofoil profile of lituus spiral vane 7 apart from the leading edge axial direction of wheel hub 3 at 132cm referring to table 2,
Table 2：
Sequence number X Y Sequence number X Y
1 -45.826 75.281 7 -35.12 79.78
2 -43.305 71.081 8 -33.169 75.348
3 -38.268 62.677 9 -29.266 66.483
4 -33.241 54.268 10 -25.364 57.619
5 -28.228 45.85 11 -21.462 48.754
6 -23.237 37.419 12 -17.56 39.89
Two curvilinear equations after fitting are respectively；
The left string of lituus spiral vane 7：Y=-0.0001x3-0.0054x2-1.8462x-3.3769；
The right string of lituus spiral vane 7：Y=-2.2714x+0.0025；
Parameter of the section aerofoil profile of lituus spiral vane 7 apart from the leading edge axial direction of wheel hub 3 at 192cm referring to table 3,
Table 3：
Sequence number X Y Sequence number X Y
1 30.382 -47.191 7 24.831 -49.929
2 33.669 -52.495 8 27.59 -55.477
3 40.261 -63.091 9 33.108 -66.572
4 46.871 -73.677 10 38.626 -77.667
5 53.492 -84.255 11 44.145 -88.763
6 60.121 -94.829 12 49.663 -99.858
Two curvilinear equations after fitting are respectively：
The left string of lituus spiral vane 7：Y=0.003x2-1.7248x+3.2307；
The right string of lituus spiral vane 7：Y=-2.0113x+0.0056.
Embodiment 2.
With reference to Fig. 1 to Fig. 5, the radius of lituus spiral vane 7 of the present invention is scalable, the lituus spiral shell Revolve the maximum radius R of shape blade 7maxWith the outlet diameter D of kuppe 13Ratio be 0.92, the lituus spiral shape leaf The least radius R of piece 7minWith the large radius R of most lituus spiral vane 7maxRatio be 0.8.
The quantity of described lituus spiral vane 7 is 2-4 pieces.
The water inlet of the energization runner is equal sized with the interlude of kuppe 1；The blade 4 and energization runner according to Secondary impacted by marine tidal-current energy and rotate, turning moment caused by the rotation passes to rotary shaft 2, the rotary shaft 2 and blade 4 and Energization runner interlocks rotation.
Embodiment 3.
With reference to Fig. 1 and Fig. 2, wheel hub 3 of the present invention is with raised spherical shape, the length L of the wheel hub 30With The length L of the interlude of kuppe 11Ratio be 0.29~0.36, the length L of the inducer of kuppe 12With in kuppe 1 Between section length L1Ratio be 0.08~0.15, the length L of the outlet section of kuppe 13With the length of the interlude of kuppe 1 L1Ratio be 0.51~0.58.
Embodiment 4.
With reference to Fig. 1, Fig. 2 and Fig. 5, the diameter D of rotary shaft 2 of the present inventionhWith the diameter D of basic runner0Ratio be 0.21~0.28, the diameter D of the interlude of kuppe 11With the diameter D of basic runner0Ratio be 1.05~1.13, kuppe 1 Inlet diameter D2With the diameter D of basic runner0Ratio be 1.20~1.27, the outlet diameter D of kuppe 13With basic runner Diameter D0Ratio be 1.68~1.75.
The specific embodiment of the critical piece size of the further open present invention below in conjunction with the accompanying drawings.
Embodiment 5.
With reference to Fig. 2, the inlet diameter of kuppe 1 of the present invention is 302cm, a diameter of 240cm of basic runner, is rotated A diameter of 50cm of axle 2, a diameter of 270cm of the interlude of kuppe 1, a diameter of 238cm of the outlet section of kuppe 1；Lead The length of the inducer of stream cover 1 is 22cm, the length of the outlet section of the length 144cm of interlude, kuppe 1 is 84cm；It is described The quantity of the lituus spiral vane 7 of energization runner is 2 pieces, a diameter of 218cm of lituus spiral vane 7.
Embodiment 6.
With reference to Fig. 2, the inlet diameter of kuppe 1 of the present invention is 453cm, a diameter of 356cm of basic runner, is rotated A diameter of 75cm of axle 2, a diameter of 405cm of the interlude of kuppe 1, a diameter of 624cm of the outlet section of kuppe 1；Lead The length of the inducer of stream cover 1 is 33cm, the length of interlude is 216cm, the length of outlet section is 125cm；The double runner The quantity of the lituus spiral vane 7 of middle energization runner is 3 pieces, and the pitch of lituus spiral vane 7 is 121cm, A diameter of 175cm of lituus spiral vane 7.
Embodiment 7.
With reference to Fig. 2, the inlet diameter of kuppe 1 of the present invention is 403cm, a diameter of 306cm of basic runner, is rotated A diameter of 75cm of axle 2, a diameter of 405cm of the interlude of kuppe 1, a diameter of 604cm of the outlet section of kuppe 1；Lead The length of the inducer of stream cover 1 is 33cm, the length of interlude is 216cm, the length of outlet section is 125cm；The double runner The quantity of the lituus spiral vane 7 of middle energization runner is 4 pieces, and the pitch of lituus spiral vane 7 is 121cm, A diameter of 275cm of lituus spiral vane (7).
Experiment proves that it is of the invention it is a kind of based on the tidal current energy water turbine of double runner under more than 1m/s flow condition Can self-starting, and there is high efficiency.Relative to traditional generating of building a dam, using the marine tidal-current energy water turbine of the present invention, Can not only conservation of nature environment, and be also greatly reduced the cost of generating set well, reach efficiently using tide Flow the purpose of energy.
The explanation being not directed in the embodiment of the present invention belongs to technology well known in the art, refers to known technology It is carried out.
The present invention achieves satisfied trial effect through validation trial.
Above embodiment and embodiment are to a kind of tidal current energy water turbine based on double runner proposed by the present invention The specific support of technological thought, it is impossible to protection scope of the present invention is limited with this, it is every according to technological thought proposed by the present invention, Any equivalent variations done on the basis of the technical program or equivalent change, still fall within technical solution of the present invention protection Scope.

Claims (5)

1. a kind of tidal current energy water turbine based on double runner, including kuppe (1), rotary shaft (2), wheel hub (3) and it is fixed on Blade (4) on the wheel hub (3), the rotary shaft (2), wheel hub (3) and blade (4) are placed in kuppe (1), and it is special Sign is, in addition to energization runner, and the energization runner includes lituus spiral vane (7), wherein：The lituus Spiral vane (7) is the axially gradually stretching along rotary shaft (2) according to lituus helix, in space crossed distorted shape And it is uniformly set in the inner circumferential wall of rotary shaft (2), the lituus spiral shell of the surfaces of revolution centered on the rotary shaft (2) The intersection point in each section of rotation shape blade (7) establishes coordinate system for origin, and the lituus spiral vane (7) is in rotary shaft (2) on periphery, the coordinate of the key point on the axially different section Curve of wing under is represented as follows, and X, which is represented, to be connected The space abscissa value of the key point on the section Curve of wing of flight auger shape blade (7) is locked, Y represents lituus spiral shape The space ordinate value of key point on the section Curve of wing of blade (7), the section aerofoil profile of lituus spiral vane (7) Parameter apart from the leading edge axial direction of wheel hub (3) at 102cm referring to table 1,
Table 1：
Sequence number X Y Sequence number X Y 1 34.951 -5.22 7 32.947 -11.081 2 38.823 -5.907 8 36.608 -12.313 3 46.571 -7.26 9 43.929 -14.775 4 54.322 -8.593 10 51.251 -17.238 5 62.076 -9.912 11 58.573 -19.7 6 69.831 -11.222 12 65.894 -22.163
Two curvilinear equations after fitting are respectively：
The left string of lituus spiral vane (7)：Y=0.0011x2-0.2253x+1.6783；
The right string of lituus spiral vane (7)：Y=-0.3354x-0.0114；
Parameter of the section aerofoil profile of lituus spiral vane (7) apart from the leading edge axial direction of wheel hub (3) at 132cm referring to table 2,
Table 2：
Sequence number X Y Sequence number X Y 1 -45.826 75.281 7 -35.12 79.78 2 -43.305 71.081 8 -33.169 75.348 3 -38.268 62.677 9 -29.266 66.483 4 -33.241 54.268 10 -25.364 57.619 5 -28.228 45.85 11 -21.462 48.754 6 -23.237 37.419 12 -17.56 39.89
Two curvilinear equations after fitting are respectively；
The left string of lituus spiral vane (7)：Y=-0.0001x3-0.0054x2-1.8462x-3.3769；
The right string of lituus spiral vane (7)：Y=-2.2714x+0.0025；
Parameter of the section aerofoil profile of lituus spiral vane (7) apart from the leading edge axial direction of wheel hub (3) at 192cm referring to table 3,
Table 3：
Sequence number X Y Sequence number X Y 1 30.382 -47.191 7 24.831 -49.929 2 33.669 -52.495 8 27.59 -55.477 3 40.261 -63.091 9 33.108 -66.572 4 46.871 -73.677 10 38.626 -77.667 5 53.492 -84.255 11 44.145 -88.763 6 60.121 -94.829 12 49.663 -99.858
Two curvilinear equations after fitting are respectively：
The left string of lituus spiral vane (7)：Y=0.003x2-1.7248x+3.2307；
The right string of lituus spiral vane (7)：Y=-2.0113x+0.0056；
The radius of the lituus spiral vane (7) is scalable, the maximum radius of the lituus spiral vane (7) RmaxWith the outlet diameter D of kuppe (1)3Ratio be 0.92；The least radius R of the lituus spiral vane (7)min With the maximum radius R of lituus spiral vane (7)maxRatio be 0.8.
A kind of 2. tidal current energy water turbine based on double runner according to claim 1, it is characterised in that the lituus The quantity of spiral vane (7) is 2-4 pieces.
A kind of 3. tidal current energy water turbine based on double runner according to claim 2, it is characterised in that the energization runner Water inlet and the interlude of kuppe (1) it is equal sized；The blade (4) and energization runner impacted successively by marine tidal-current energy and Rotation, turning moment caused by the rotation pass to rotary shaft (2), and the rotary shaft (2) connects with blade (4) and energization runner Dynamic rotation.
A kind of 4. tidal current energy water turbine based on double runner according to claim 3, it is characterised in that the wheel hub (3) For the spherical shape with projection, the length L of the wheel hub (3)0With the length L of the interlude of kuppe (1)1Ratio be 0.29 ~0.36, the length L of the inducer of kuppe (1)2With the length L of kuppe (1) interlude1Ratio be 0.08~0.15, lead The length L of the outlet section of stream cover (1)3With the length L of the interlude of kuppe (1)1Ratio be 0.51~0.58.
A kind of 5. tidal current energy water turbine based on double runner according to claim 4, it is characterised in that the rotary shaft (2) diameter DhWith the diameter D of basic runner0Ratio be 0.21~0.28, the diameter D of the interlude of kuppe (1)1With basis The diameter D of runner0Ratio is 1.05~1.13, the inlet diameter D of kuppe (1)2With the diameter D of basic runner0Ratio be 1.20~1.27, the outlet diameter D of kuppe (1)3With the diameter D of basic runner0Ratio be 1.68~1.75.
CN201710880362.8A 2017-09-26 2017-09-26 A kind of tidal current energy water turbine based on double runner Pending CN107829873A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109139347A (en) * 2018-08-31 2019-01-04 北京维蓝清能科技有限公司 A kind of increasing drive formula tidal generating set
CN113175406A (en) * 2021-04-23 2021-07-27 西北农林科技大学 Parent fish type through-flow turbine

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US20020078687A1 (en) * 2000-12-21 2002-06-27 Donnelly Francis M. ?Quot;Jim?Quot; Apparatus converting ocean wave energy
WO2007139406A1 (en) * 2006-05-25 2007-12-06 Arthur Olszewski A device which converts the energy of flowing water
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CN105736227A (en) * 2016-02-02 2016-07-06 河海大学 Horizontal-shaft tidal turbine with linkage spiral vanes
CN105736230A (en) * 2016-02-02 2016-07-06 河海大学 Horizontal-shaft tidal current energy water turbine with constant-speed spiral blade
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Publication number Priority date Publication date Assignee Title
FR2389779A1 (en) * 1977-05-02 1978-12-01 Guerin Georges Turbine driven by air or water - has stationary conical inlet piece to concentrate fluid entering to increase output
US20020078687A1 (en) * 2000-12-21 2002-06-27 Donnelly Francis M. ?Quot;Jim?Quot; Apparatus converting ocean wave energy
WO2007139406A1 (en) * 2006-05-25 2007-12-06 Arthur Olszewski A device which converts the energy of flowing water
US20120107090A1 (en) * 2007-09-28 2012-05-03 Krouse Wayne F Machine for increased hydro power generation
KR20140129442A (en) * 2013-04-29 2014-11-07 김일준 Small hydro power plant
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CN105736227A (en) * 2016-02-02 2016-07-06 河海大学 Horizontal-shaft tidal turbine with linkage spiral vanes
CN105736230A (en) * 2016-02-02 2016-07-06 河海大学 Horizontal-shaft tidal current energy water turbine with constant-speed spiral blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109139347A (en) * 2018-08-31 2019-01-04 北京维蓝清能科技有限公司 A kind of increasing drive formula tidal generating set
CN113175406A (en) * 2021-04-23 2021-07-27 西北农林科技大学 Parent fish type through-flow turbine

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