CN105545580B - A kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane - Google Patents

A kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane Download PDF

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Publication number
CN105545580B
CN105545580B CN201610074882.5A CN201610074882A CN105545580B CN 105545580 B CN105545580 B CN 105545580B CN 201610074882 A CN201610074882 A CN 201610074882A CN 105545580 B CN105545580 B CN 105545580B
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spiral vane
fermat spiral
fermat
class
hub
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CN105545580A (en
Inventor
付士凤
郑源
阚阚
何中伟
芦月
张伟婷
陈宇杰
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Hohai University HHU
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Hohai University HHU
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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
    • 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
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/006—Sealing arrangements
    • 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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Hydraulic Turbines (AREA)

Abstract

The present invention relates to a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane, including main shaft, cabinet, thrust bearing, shaft coupling, generator, frame, base, water guide cone, supported respectively with frame and base below the cabinet；Characterized in that, also including the Fermat spiral vane in two-dimentional Fermat helix shape, the class cone hub in immersion torrent stream, seal closure；The generator is coupled by shaft coupling and main shaft with class cone hub, in main shaft and class cone hub junction, seal closure is set, cabinet afterbody on rear side of class cone hub sets water guide cone, and the Fermat spiral vane stretches to form spatial warping shape and be uniformly set on the periphery of class cone hub by thrust bearing with the axial gradual change along class cone hub is uniform speed rotation.Present invention substantially reduces hydraulic friction collision, entrance head loss is reduced, so as to improve hydraulic turbine capacitation effect and solve the problem such as pass through the ocean shoal of fish well.

Description

A kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane
Technical field
The invention belongs to hydraulic turbine technical field of power generation, more particularly to a kind of trunnion axis tide with Fermat spiral vane Stream can the hydraulic turbine.
Background technology
In the last few years, as marine resources and maritime rights and interests are increasingly concerned, the mankind for marine tidal-current energy exploration and open Hair is little by little heating up, and marine tidal-current energy is as the important component of ocean energy, and with predictability, power density is big and energy is steady Surely outstanding advantages are waited, exploitation receive much concern.
The exploitation of marine tidal-current energy is concentrated mainly on technical field of power generation, and tidal current energy water turbine is its core energy converting means Put.According to textural classification, existing tidal current energy water turbine mainly has the trunnion axis hydraulic turbine, horizontal shaft water-turbine and vibration hydrofoil, These tidal current energy water turbines cut both ways, and trunnion axis hydraulic turbine Technical comparing is ripe, and capacitation efficiency is higher, but driftage loss is tight Weight；Horizontal shaft water-turbine is although simple in construction, it is easy to maintain, but also there is the problem of self-starting is difficult, efficiency is low；Shake The research for swinging hydrofoil is started late, and is also in the exploratory stage.Meanwhile, the vibration and noise of these hydraulic turbines is big, to fish, cephalopodium The marine environment that the marine organisms such as class are depended on for existence has a certain degree of influence and destruction.Come from the patented technology announced Seeing, also cannot be introduced into the practical stage because there is foregoing deficiency.
Chinese patent application 201210556394.X discloses " combined type tidal current energy vertical shaft water turbine ", although the program Outside H types, the structure of inside S types are employed, has the advantages that fast startability, stability are preferable, but because of blade vertical axis side To arrangement so that overall efficiency is relatively low, and there is considerable influence to marine organisms.The disclosure of Chinese patent application 201310291232.2 " a kind of variable marine tidal-current energy capacitation hydraulic turbine of blade posture ", arc shaped blade is arranged in main shaft by the program by on-link mode (OLM) On, blade posture is variable, and stability of period is preferable, but because its structure is excessively complicated, economy is poor, without practical value.
In summary, the deficiencies in the prior art how are overcome to turn into urgently to be resolved hurrily in modern water turbine technical field of power generation One of emphasis problem.
The content of the invention
The purpose of the present invention is a kind of with Fermat spiral vane to overcome the shortcomings of to provide present in prior art The horizontal axis tidal current energy hydraulic turbine, the hydraulic turbine of the invention has dexterously used the Fermat spiral shape in two-dimentional Fermat helix shape Blade, stretches to form spatial warping shape and be uniformly set at the outer of class cone hub with the axial gradual change along class cone hub Uniform speed rotation is on week, hydraulic friction collision is greatly reduced, entrance head loss is reduced, so as to improve trunnion axis Tidal current energy water turbine capacitation effect simultaneously solves the problem such as pass through the ocean shoal of fish well.
According to a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention, including main shaft, machine Supported respectively with frame and base below case, thrust bearing, shaft coupling, generator, frame, base, water guide cone, the cabinet； Characterized in that, also including the Fermat spiral vane in two-dimentional Fermat helix shape, the class taper cone pulley in immersion torrent stream Hub, seal closure；The generator is coupled by shaft coupling and main shaft with class cone hub, in main shaft and class cone hub junction Seal closure is set, and the cabinet afterbody on rear side of class cone hub sets water guide cone, the Fermat spiral vane passes through thrust axis Hold and stretch to form the periphery that spatial warping shape is uniformly set at class cone hub with the axial gradual change along class cone hub On；Key point on section Curve of wing under axially different distance of the Fermat spiral vane on class cone hub periphery Coordinate represent that X and Y represent the space coordinate of key point on the Curve of wing of Fermat spiral vane section respectively as follows Parameter at value, the leading edge axial direction 55cm of distance-like cone hub is referring to table 1：
Table 1
Sequence number X Y Sequence number X Y
1 45.39 -7.84 11 45.37 7.52
2 50.54 -8.71 12 50.41 8.36
3 55.68 -9.59 13 55.45 9.19
4 60.83 -10.46 14 60.49 10.03
5 65.97 -11.33 15 65.53 10.86
6 71.12 -12.20 16 70.57 11.70
7 76.27 -13.07 17 75.61 12.53
8 81.41 -13.94 18 80.65 13.37
9 86.56 -14.81 19 85.70 14.20
10 91.70 -15.68 20 90.74 15.04
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane：Y=-0.1683x-0.1727；
The right string of Fermat spiral vane：Y=0.1656x+0.0019；
Parameter at the leading edge axial direction 110cm of distance-like cone hub is referring to table 2：
Table 2
Sequence number X Y Sequence number X Y
1 -110.70 13.29 11 -108.65 -12.74
2 -104.60 12.55 12 -102.62 -12.04
3 -98.50 11.81 13 -96.58 -11.33
4 -92.40 11.08 14 -90.54 -10.62
5 -86.30 10.34 15 -84.51 -9.91
6 -80.20 9.60 16 -78.47 -9.20
7 -74.11 8.86 17 -72.43 -8.50
8 -68.01 8.12 18 -66.40 -7.79
9 -61.91 7.38 19 -60.36 -7.08
10 -55.81 6.65 20 -54.33 -6.37
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane：Y=-0.121x-0.1103；
The right string of Fermat spiral vane：Y=0.1173x-0.0008；
Parameter at the leading edge axial direction 165cm of distance-like cone hub is referring to table 3：
Table 3
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane：Y=0.7088x+0.6573；
The right string of Fermat spiral vane：Y=1.0537x-0.0093；
Parameter at the leading edge axial direction 200cm of distance-like cone hub is referring to table 4：
Table 4
Sequence number X Y Sequence number X Y
1 8.88 -64.67 11 20.41 -61.77
2 9.97 -71.86 12 22.68 -68.64
3 11.06 -79.04 13 24.94 -75.50
4 12.15 -86.23 14 27.21 -82.36
5 13.24 -93.42 15 29.48 -89.23
6 14.33 -100.60 16 31.75 -96.09
7 15.42 -107.79 17 34.01 -102.95
8 16.51 -114.97 18 36.28 -109.82
9 17.60 -122.16 19 38.55 -116.68
10 18.69 -129.34 20 40.82 -123.54
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane：Y=-6.5976x-6.0551；
The right string of Fermat spiral vane：Y=-0.0002x2-3.0228x-0.0303；
Parameter at the leading edge axial direction 250cm of distance-like cone hub is referring to table 5：
Table 5
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane：Y=-0.0788x-0.0726；
The right string of Fermat spiral vane：Y=0.0725x-0.0003.
The present invention realization principle be：The hydraulic turbine of the present invention has dexterously used the expense in two-dimentional Fermat helix shape Horse spiral vane, stretches to form spatial warping shape and be uniformly set at class taper with the axial gradual change along class cone hub On the periphery of wheel hub, when trend flows through the hydraulic turbine of the present invention, trend particle is then done along with around Fermat stream spiral vane Uniform speed rotation, greatly reduces hydraulic friction collision, entrance head loss is reduced, so as to improve hydraulic turbine capacitation work( Effect；Wherein, class cone hub can be arranged to different ratio of height to diameters according to tidal current speed difference, in two-dimentional Fermat helix shape Fermat spiral vane can be arranged to different pitch according to tidal current speed difference and adjust spatial warping degree；Greatly ensure The stability that runner is rotated；Rotated after external force suffered by Fermat spiral vane, and then drive main shaft rotation, then by torque Pass to the generating set being attached thereto to generate electricity, extra large marine tidal-current energy is converted into electric energy.
Its remarkable advantage is the present invention compared with prior art：
First, Fermat spiral vane of the invention is in two-dimentional Fermat helix shape, with along the axial direction of class cone hub Gradual change, which stretches to form spatial warping shape and be uniformly set on the periphery of class cone hub, is uniform speed rotation, subtracts significantly Hydraulic friction collision is lacked, entrance head loss has been reduced, so as to improve hydraulic turbine capacitation effect；
Second, class cone hub of the invention is in the three-dimensional Fermat helix of the Fermat spiral vane inner edge around axial direction The class cone shape formed is rotated, with Fermat spiral vane with synergy is merged, water turbine units are not only substantially reduced Vibration and noise, and can pass through the ocean shoal of fish, efficiently solve the fish present in prior art and be difficult to move Move, the marine eco-environment damaged and the problem of tidal current energy water turbine and marine organisms are difficult to coexist.
3rd, hydraulic turbine structure of the invention has filled up the blank of the art, and it efficiently solves prior art The difficult problem of existing self-starting, and class cone hub can be arranged to different ratio of height to diameters according to tidal current speed difference, take The cross sectional shape of horse spiral vane can be this with class cone hub and Fermat spiral in symmetrical airfoil type or asymmetric airfoil type Thrust produced by the collaboration matching of shape blade, results in more marine tidal-current energies.
4th, hydraulic turbine structure stability of the invention is good, effective time length and efficiency high, can be used as prior art Upgraded product, it is adaptable to substitute the various hydraulic turbines generated electricity in this area using extra large marine tidal-current energy.
Brief description of the drawings
Fig. 1 is that a kind of structure section view of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention is shown It is intended to.
Fig. 2 is a kind of body profile knot of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention Structure schematic diagram.
Fig. 3 is the Fermat helix schematic diagram of Fermat spiral vane proposed by the present invention.
Fig. 4 is a kind of runner outer shape knot of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention Structure schematic diagram.
Fig. 5 is the contour structures schematic diagram of single Fermat spiral vane proposed by the present invention.
Fig. 6 is the contour structures schematic diagram of proposed by the present invention pair of Fermat spiral vane combination.
Fig. 7 is the axially distinct position schematic cross-section of Fermat spiral vane proposed by the present invention.
Fig. 8 is that spiral vane section molded line is illustrated at distance-like cone hub leading edge axial direction 55cm proposed by the present invention Figure.
Fig. 9 is that spiral vane section molded line is illustrated at distance-like cone hub leading edge axial direction 110cm proposed by the present invention Figure.
Figure 10 is that spiral vane section molded line is illustrated at distance-like cone hub leading edge axial direction 165cm proposed by the present invention Figure.
Figure 11 is that spiral vane section molded line is illustrated at distance-like cone hub leading edge axial direction 200cm proposed by the present invention Figure.
Figure 12 is that spiral vane section molded line is illustrated at distance-like cone hub leading edge axial direction 250cm proposed by the present invention Figure.
Embodiment
The embodiment to the present invention is described in further detail with reference to the accompanying drawings and examples.
With reference to Fig. 1-3, a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention, including master Axle (3), cabinet (5), thrust bearing (6), shaft coupling (7), generator (8), frame (9), base (10), water guide cone (11), institute State and supported respectively with frame (9) and base (10) below cabinet (5)；Also include the Fermat spiral in two-dimentional Fermat helix shape Shape blade (1), the class cone hub (2) in immersion torrent stream, seal closure (4)；The generator (8) by shaft coupling (7) and Main shaft (3) couples with class cone hub (2), and seal closure (4) is set in main shaft (3) and class cone hub (2) junction, in class cone Cabinet (5) afterbody on rear side of shape wheel hub (2) sets water guide cone (11), and the Fermat spiral vane (1) passes through thrust bearing (6) Stretched with the axial gradual change along class cone hub (2) and to form spatial warping shape and be uniformly set at class cone hub (2) On periphery.
With reference to Fig. 4-12, Fermat spiral vane (1) of the present invention is axially different on class cone hub (2) periphery The coordinate of key point is represented as follows on section Curve of wing under, and X and Y represent Fermat spiral vane respectively (1) on the Curve of wing of section key point spatial value, the parameter ginseng at the leading edge axial direction 55cm of distance-like cone hub (2) It is shown in Table 1：
Table 1
Sequence number X Y Sequence number X Y
1 45.39 -7.84 11 45.37 7.52
2 50.54 -8.71 12 50.41 8.36
3 55.68 -9.59 13 55.45 9.19
4 60.83 -10.46 14 60.49 10.03
5 65.97 -11.33 15 65.53 10.86
6 71.12 -12.20 16 70.57 11.70
7 76.27 -13.07 17 75.61 12.53
8 81.41 -13.94 18 80.65 13.37
9 86.56 -14.81 19 85.70 14.20
10 91.70 -15.68 20 90.74 15.04
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-0.1683x-0.1727；
The right string of Fermat spiral vane (1)：Y=0.1656x+0.0019；
Parameter at the leading edge axial direction 110cm of distance-like cone hub (2) is referring to table 2：
Table 2
Sequence number X Y Sequence number X Y
1 -110.70 13.29 11 -108.65 -12.74
2 -104.60 12.55 12 -102.62 -12.04
3 -98.50 11.81 13 -96.58 -11.33
4 -92.40 11.08 14 -90.54 -10.62
5 -86.30 10.34 15 -84.51 -9.91
6 -80.20 9.60 16 -78.47 -9.20
7 -74.11 8.86 17 -72.43 -8.50
8 -68.01 8.12 18 -66.40 -7.79
9 -61.91 7.38 19 -60.36 -7.08
10 -55.81 6.65 20 -54.33 -6.37
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-0.121x-0.1103；
The right string of Fermat spiral vane (1)：Y=0.1173x-0.0008；
Parameter at the leading edge axial direction 165cm of distance-like cone hub (2) is referring to table 3：
Table 3
Sequence number X Y Sequence number X Y
1 48.82 35.28 11 41.68 43.90
2 54.35 39.19 12 46.32 48.78
3 59.87 43.11 13 50.95 53.66
4 65.40 47.03 14 55.58 58.53
5 70.93 50.95 15 60.21 63.41
6 76.45 54.87 16 64.84 68.29
7 81.98 58.79 17 69.47 73.17
8 87.51 62.71 18 74.11 78.05
9 93.03 66.63 19 78.74 82.92
10 98.56 70.55 20 83.37 87.80
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=0.7088x+0.6573；
The right string of Fermat spiral vane (1)：Y=1.0537x-0.0093；
Parameter at the leading edge axial direction 200cm of distance-like cone hub (2) is referring to table 4：
Table 4
Sequence number X Y Sequence number X Y
1 8.88 -64.67 11 20.41 -61.77
2 9.97 -71.86 12 22.68 -68.64
3 11.06 -79.04 13 24.94 -75.50
4 12.15 -86.23 14 27.21 -82.36
5 13.24 -93.42 15 29.48 -89.23
6 14.33 -100.60 16 31.75 -96.09
7 15.42 -107.79 17 34.01 -102.95
8 16.51 -114.97 18 36.28 -109.82
9 17.60 -122.16 19 38.55 -116.68
10 18.69 -129.34 20 40.82 -123.54
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-6.5976x-6.0551；
The right string of Fermat spiral vane (1)：Y=-0.0002x2-3.0228x-0.0303；
Parameter at the leading edge axial direction 250cm of distance-like cone hub (2) is referring to table 5：
Table 5
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-0.0788x-0.0726；
The right string of Fermat spiral vane (1)：Y=0.0725x-0.0003.
A kind of further preferred side of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention Case is：
The quantity of Fermat spiral vane (1) of the present invention is 1 to 5 piece；The section of the Fermat spiral vane (1) Shape is in symmetrical airfoil type or asymmetric airfoil type；The pitch of the Fermat spiral vane (1) is 20~40 centimetres；The class The height of cone hub (2) is 3 with diameter ratio:1~5:1；The height of the water guide cone (11) is 1 with diameter ratio:1~2: 5；The three-dimensional Fermat helix for being shaped as Fermat spiral vane (1) inner edge of the class cone hub (2) is around axial rotation Turn the class cone shape formed；On the periphery curve in the mistake rotary shaft section of the class cone hub (2) coordinate of key point with Following manner represents, the space of key point on the periphery curve in the mistake rotary shaft section that X and Z represent class cone hub (2) respectively Coordinate value, design parameter is referring to table 6：
Table 6
A kind of Application Example of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane proposed by the present invention is as follows：
Taken under the conditions of using the marine tidal-current energy flow velocity of coastal region as 1.1m/s~2.3m/s using a kind of band proposed by the present invention Exemplified by the horizontal axis tidal current energy hydraulic turbine of horse spiral vane：
The design of embodiment 1 is identical with the technical solution of the present invention, the design parameter of its critical piece It is disclosed directly below：
The quantity of the Fermat spiral vane (1) of the present invention is 2 pieces；The cross sectional shape selection of Fermat spiral vane (1) Symmetrical airfoil type；The height of Fermat spiral vane (1) is that 310cm, maximum gauge are 260cm, and minimum pitch is 85cm, pitch Gradual change ratio is 5:6；The height of class cone hub (2) is that 310cm, maximum gauge are 105cm；The height of the water guide cone (11) is 190cm, a diameter of 105cm.
The design of embodiment 2 is identical with the technical solution of the present invention, the design parameter of its critical piece It is disclosed directly below：
The quantity of the Fermat spiral vane (1) of the present invention is 1 piece；The cross sectional shape selection of Fermat spiral vane (1) Asymmetric airfoil type；The height of Fermat spiral vane (1) is that 320cm, maximum gauge are 270cm, and minimum pitch is 85cm, spiral shell It is 5 away from gradual change ratio:6；The height of class cone hub (2) is that 320cm, maximum gauge are 105cm；The height of the water guide cone (11) For 195cm, a diameter of 105cm.
The design of embodiment 3 is identical with the technical solution of the present invention, the design parameter of its critical piece It is disclosed directly below：
The quantity of the Fermat spiral vane (1) of the present invention is 5 pieces；The cross sectional shape selection of Fermat spiral vane (1) Symmetrical airfoil type；The height of Fermat spiral vane (1) is that 320cm, maximum gauge are 200cm, and minimum pitch is 90cm, pitch Gradual change ratio is 5:6；The height of class cone hub (2) is that 320cm, maximum gauge are 105cm；The height of the water guide cone (11) is 170cm, a diameter of 105cm.
The present invention concrete application process be：The runner of the present invention include revolving Fermat shape blade (1) with along class taper cone pulley Hub (2) coordinated, when the trend in ocean impacts the Fermat spiral vane (1) of runner of the present invention, by taking for runner Horse spiral vane (1) is converted to the energy of marine tidal-current energy the kinetic energy of runner, and then drives the defeated of the horizontal axis tidal current energy hydraulic turbine Shaft is rotated, and the energy of trend is converted to the kinetic energy of the horizontal axis tidal current energy hydraulic turbine, electrical power generators, trend are further driven to The rear of runner is flowed to by water guide cone section, is returned in ocean.
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 trunnion axis with Fermat spiral vane proposed by the present invention The specific support of tidal current energy water turbine technological thought, it is impossible to which protection scope of the present invention is limited with this, it is every to be carried according to the present invention The technological thought gone out, any equivalent variations done on the basis of the technical program or equivalent change, still fall within the present invention The scope of technical scheme protection.

Claims (7)

1. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane, including main shaft (3), cabinet (5), thrust bearing (6) respectively with frame below, shaft coupling (7), generator (8), frame (9), base (10), water guide cone (11), the cabinet (5) (9) supported with base (10)；Characterized in that, also including the Fermat spiral vane (1) in two-dimentional Fermat helix shape, leaching Enter class cone hub (2), the seal closure (4) in torrent stream；The generator (8) is bored by shaft coupling (7) and main shaft (3) with class Shape wheel hub (2) couples, and seal closure (4) is set in main shaft (3) and class cone hub (2) junction, on rear side of class cone hub (2) Cabinet (5) afterbody water guide cone (11) is set, the Fermat spiral vane (1) is by thrust bearing (6) with along class taper cone pulley The axial gradual change of hub (2), which is stretched, to be formed spatial warping shape and is uniformly set on the periphery of class cone hub (2)；It is described to take Horse spiral vane (1) key point on the axially different section Curve of wing under on class cone hub (2) periphery Coordinate represented as follows, and the space that X and Y represent key point on the Curve of wing of Fermat spiral vane (1) section respectively is sat Parameter at scale value, the leading edge axial direction 55cm of distance-like cone hub (2) is referring to table 1：
Table 1
Sequence number X Y Sequence number X Y 1 45.39 -7.84 11 45.37 7.52 2 50.54 -8.71 12 50.41 8.36 3 55.68 -9.59 13 55.45 9.19 4 60.83 -10.46 14 60.49 10.03 5 65.97 -11.33 15 65.53 10.86 6 71.12 -12.20 16 70.57 11.70 7 76.27 -13.07 17 75.61 12.53 8 81.41 -13.94 18 80.65 13.37 9 86.56 -14.81 19 85.70 14.20 10 91.70 -15.68 20 90.74 15.04
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-0.1683x-0.1727；
The right string of Fermat spiral vane (1)：Y=0.1656x+0.0019；
Parameter at the leading edge axial direction 110cm of distance-like cone hub (2) is referring to table 2：
Table 2
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-0.121x-0.1103；
The right string of Fermat spiral vane (1)：Y=0.1173x-0.0008；
Parameter at the leading edge axial direction 165cm of distance-like cone hub (2) is referring to table 3：
Table 3
Sequence number X Y Sequence number X Y 1 48.82 35.28 11 41.68 43.90 2 54.35 39.19 12 46.32 48.78 3 59.87 43.11 13 50.95 53.66 4 65.40 47.03 14 55.58 58.53 5 70.93 50.95 15 60.21 63.41 6 76.45 54.87 16 64.84 68.29 7 81.98 58.79 17 69.47 73.17 8 87.51 62.71 18 74.11 78.05 9 93.03 66.63 19 78.74 82.92 10 98.56 70.55 20 83.37 87.80
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=0.7088x+0.6573；
The right string of Fermat spiral vane (1)：Y=1.0537x-0.0093；
Parameter at the leading edge axial direction 200cm of distance-like cone hub (2) is referring to table 4：
Table 4
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-6.5976x-6.0551；
The right string of Fermat spiral vane (1)：Y=-0.0002x2-3.0228x-0.0303；
Parameter at the leading edge axial direction 250cm of distance-like cone hub (2) is referring to table 5：
Table 5
Sequence number X Y Sequence number X Y 1 -138.67 10.86 11 -137.22 -9.95 2 -131.02 10.25 12 -129.60 -9.40 3 -123.37 9.65 13 -121.97 -8.84 4 -115.71 9.05 14 -114.35 -8.29 5 -108.06 8.44 15 -106.73 -7.74 6 -100.41 7.84 16 -99.10 -7.18 7 -92.76 7.24 17 -91.48 -6.63 8 -85.10 6.63 18 -83.86 -6.08 9 -77.45 6.03 19 -76.23 -5.53 10 -69.80 5.43 20 -68.61 -4.97
Two curvilinear equations after fitting are respectively：
The left string of Fermat spiral vane (1)：Y=-0.0788x-0.0726；
The right string of Fermat spiral vane (1)：Y=0.0725x-0.0003.
2. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane according to claim 1, it is characterised in that The quantity of the Fermat spiral vane (1) is 1~5 piece.
3. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane according to claim 2, it is characterised in that The cross sectional shape of the Fermat spiral vane (1) is in symmetrical airfoil type or asymmetric airfoil type.
4. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane according to claim 3, it is characterised in that The pitch of the Fermat spiral vane (1) is 20~40 centimetres, and Fermat spiral vane (1) axial pitch gradually increases, spiral shell It is 5 away from gradient scale:6.
5. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane according to claim 4, it is characterised in that The height of the class cone hub (2) is 3 with diameter ratio:1~5:1.
6. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane according to one of claim 1-5, it is special Levy and be, the three-dimensional Fermat helix for being shaped as Fermat spiral vane (1) inner edge of the class cone hub (2) is around axle The class cone shape formed to rotation；The seat of key point on the periphery curve in the mistake rotary shaft section of the class cone hub (2) It is marked with following manner to represent, key point on the periphery curve in the mistake rotary shaft section that X and Z represent class cone hub (2) respectively Spatial value, design parameter is referring to table 6.
Table 6
Sequence number X Z Sequence number X Z 1 0.0000 0.0000 11 -72.0000 300.0000 2 32.2582 12.1366 12 -69.7055 263.5687 3 45.0720 46.1412 13 -67.1609 227.1540 4 52.0424 81.9630 14 -64.2906 190.7636 5 57.0255 118.1227 15 -60.9789 154.4108 6 60.9789 154.4108 16 -57.0255 118.1227 7 64.2906 190.7636 17 -52.0424 81.9630 8 67.1609 227.1540 18 -45.0720 46.1412 9 69.7056 263.5687 19 -32.2582 12.1366 10 72.0000 300.0000 20 0.0000 0.0000
7. a kind of horizontal axis tidal current energy hydraulic turbine with Fermat spiral vane according to claim 6, it is characterised in that The height of the water guide cone (11) is 1 with diameter ratio:2~4:5.
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