CN105736228B - A kind of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade - Google Patents

A kind of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade Download PDF

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Publication number
CN105736228B
CN105736228B CN201610072646.XA CN201610072646A CN105736228B CN 105736228 B CN105736228 B CN 105736228B CN 201610072646 A CN201610072646 A CN 201610072646A CN 105736228 B CN105736228 B CN 105736228B
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China
Prior art keywords
logarithmic spiral
spiral shape
shape blade
class
cone hub
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CN105736228A (en
Inventor
郑源
何中伟
芦月
阚阚
付士凤
陈宇杰
张伟婷
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Shaoyang Hengyuan Zijiang Hydroelectric Equipment Co ltd
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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
    • 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
    • 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
    • F03B3/04—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. 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
    • F03B3/12—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
    • 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
    • F05B2200/00—Mathematical features
    • F05B2200/20—Special functions
    • F05B2200/23—Logarithm
    • 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
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • 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 logarithmic spiral shape blade, 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 include the logarithmic spiral shape blade in two dimensional logarithmic spiral wire shaped, the class cone hub immersed in 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 logarithmic spiral shape blade 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, the ocean shoal of fish problem such as is passed through so as to improve hydraulic turbine capacitation effect and solve well.

Description

A kind of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade
Technical field
The invention belongs to hydraulic turbine technical field of power generation, more particularly to a kind of trunnion axis tide with logarithmic spiral shape blade Stream can the hydraulic turbine.
Background technology
In the last few years, as marine resources and maritime rights and interests are increasingly concerned, exploration of the mankind for marine tidal-current energy and open Hair is little by little heating up, important component of the marine tidal-current energy as ocean energy, has predictability, power density is big and energy is steady Outstanding advantages of determining, utilization 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 conversion dress 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 loss of going off course is tight Weight；Horizontal shaft water-turbine is although simple in construction, for ease of maintenaince conserves, 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 destroyed.Come from the patented technology announced Seeing, also cannot be introduced into the practical stage because foregoing deficiency be present.
Chinese patent application 201210556394.X discloses " combined type tidal current energy vertical shaft water turbine ", although the program Outside H types, the structure of internal 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 has 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, how overcome the deficiencies in the prior art has turned 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 logarithmic spiral shape blade 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 have dexterously used the logarithmic spiral shape in two dimensional logarithmic spiral wire shaped Blade, stretch 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, greatly reduces hydraulic friction collision, entrance head loss is reduced, so as to improve the hydraulic turbine Capacitation effect and solving well makes the ocean shoal of fish problem such as pass through.
According to a kind of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade proposed by the present invention, including main shaft, machine Case, thrust bearing, shaft coupling, generator, frame, base, water guide cone, the cabinet lower section are supported with frame and base respectively； Characterized in that, also include the logarithmic spiral shape blade in two dimensional logarithmic spiral wire shaped, the class taper cone pulley immersed in 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, and the logarithmic spiral shape blade passes through thrust axis Hold and the periphery to form spatial warping shape and be uniformly set at class cone hub is stretched with the axial gradual change along class cone hub On；Key point on section Curve of wing under axially different distance of the logarithmic spiral shape blade on class cone hub periphery Coordinate represent that X and Y represent the space coordinates of key point on logarithmic spiral shape blade profile Curve of wing respectively as follows It is worth, the parameter at 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 28.9772 4.8031 11 25.8547 13.5602
2 32.1969 5.3368 12 28.5861 15.0669
3 35.4166 5.8704 13 31.3174 16.5736
4 38.6362 6.4041 14 34.0488 18.0803
5 41.8559 6.9378 15 36.7802 19.587
6 45.0756 7.4715 16 39.5116 21.0937
7 48.2953 8.0051 17 42.243 22.6004
8 51.515 8.5388 18 44.9744 24.1071
9 54.7347 9.0725 19 47.7058 25.6138
10 57.9544 9.6062 20 50.4372 27.1205
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade：Y=0.1650x+0.0073；
The right string of logarithmic spiral shape blade：Y=0.5516x-0.7018；
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 -82.5421 -9.6819 11 -74.9703 -28.2068
2 -77.9564 -9.144 12 -58.0275 -21.9386
3 -73.3708 -8.6061 13 -70.7346 -26.6397
4 -68.7851 -8.0682 14 -41.0848 -15.6704
5 -64.1994 -7.5303 15 -66.4989 -25.0727
6 -59.6137 -6.9925 16 -49.5561 -18.8045
7 -55.0281 -6.4546 17 -53.7918 -20.3716
8 -50.4424 -5.9167 18 -62.2632 -23.5056
9 -45.8567 -5.3788 19 -45.3204 -17.2375
10 -41.271 -4.8409 20 -36.8491 -14.1034
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade：Y=0.1174x+0.0014；
The right string of logarithmic spiral shape blade：Y=0.3694x-0.4771；
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 logarithmic spiral shape blade：Y=1.0522x+0.0118；
The right string of logarithmic spiral shape blade：Y=0.0001x2+1.5697x-1.9677；
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 18.44 -55.814 11 28.439 -51.406
2 20.489 -62.015 12 31.457 -57.118
3 22.538 -68.217 13 34.476 -62.83
4 24.587 -74.418 14 37.494 -68.541
5 26.636 -80.62 15 40.513 -74.253
6 28.685 -86.821 16 43.531 -79.965
7 30.733 -93.023 17 46.55 -85.677
8 32.782 -99.225 18 49.569 -91.388
9 34.831 -105.426 19 52.587 -97.1
10 36.88 -111.628 20 55.606 -102.812
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade：Y=0.0001x2-3.0283x+0.0087；
The right string of logarithmic spiral shape blade：Y=-0.0001x2-1.8885x+2.3695；
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 logarithmic spiral shape blade：Y=0.0727x+0.0059；
The right string of logarithmic spiral shape blade：Y=0.2255x-0.2832.
The present invention realization principle be：It is in two dimensional logarithmic spiral wire shaped logarithm that the hydraulic turbine of the present invention, which has dexterously used, Spiral vane, stretch to form spatial warping shape and be uniformly set at class taper cone pulley with the axial gradual change along class cone hub On the periphery of hub, when trend flow through the present invention the hydraulic turbine when, trend particle then along with stream logarithmic spiral shape blade do it is even Fast rotary motion, hydraulic friction collision is greatly reduced, 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 dimensional logarithmic spiral wire shaped Logarithmic spiral shape blade can be arranged to different pitch according to tidal current speed difference and adjust spatial warping degree；Greatly ensure The stability that runner rotates；Rotated after external force suffered by logarithmic spiral shape blade, 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, logarithmic spiral shape blade of the invention is in two dimensional logarithmic spiral wire shaped, 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 log spiral of the logarithmic spiral shape vane inside edge around axial direction The class cone shape formed is rotated, with logarithmic spiral shape blade with synergy is merged, not only substantially reduces water turbine units 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, it is right The cross sectional shape of number spiral vanes can be in symmetrical airfoil type or asymmetric airfoil type, this with class cone hub and logarithmic spiral Thrust caused by the collaboration matching of shape blade, can obtain more marine tidal-current energies.
4th, hydraulic turbine structure stability of the invention is good, the effective time is long and efficiency high, can be used as prior art Upgraded product, suitable for substitute this area using extra large marine tidal-current energy generate electricity the various hydraulic turbines.
Brief description of the drawings
Fig. 1 is that a kind of structure section view of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade 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 logarithmic spiral shape blade proposed by the present invention Structure schematic diagram.
Fig. 3 is the log spiral schematic diagram of logarithmic spiral shape blade proposed by the present invention.
Fig. 4 is a kind of runner outer shape knot of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade proposed by the present invention Structure schematic diagram.
Fig. 5 is the outline structural diagram of single pair number spiral vane proposed by the present invention.
Fig. 6 is the outline structural diagram of double-log spiral vane combination proposed by the present invention.
Fig. 7 is the axially distinct position schematic cross-section of logarithmic spiral shape blade proposed by the present invention.
Fig. 8 is that logarithmic spiral shape blade profile molded line shows at distance-like cone hub leading edge axial direction 55cm proposed by the present invention It is intended to.
Fig. 9 is logarithmic spiral shape blade profile molded line at distance-like cone hub leading edge axial direction 110cm proposed by the present invention Schematic diagram.
Figure 10 is logarithmic spiral shape blade profile molded line at distance-like cone hub leading edge axial direction 165cm proposed by the present invention Schematic diagram.
Figure 11 is logarithmic spiral shape blade profile molded line at distance-like cone hub leading edge axial direction 200cm proposed by the present invention Schematic diagram.
Figure 12 is logarithmic spiral shape blade profile molded line at distance-like cone hub leading edge axial direction 250cm proposed by the present invention Schematic diagram.
Embodiment
The embodiment of 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 logarithmic spiral shape blade 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 logarithmic spiral in two dimensional logarithmic spiral wire shaped Shape blade (1), the class cone hub (2) immersed in torrent stream, seal closure (4)；The generator (8) by shaft coupling (7) and Main shaft (3) couples with class cone hub (2), sets seal closure (4) in main shaft (3) and class cone hub (2) junction, is bored in class Cabinet (5) afterbody on rear side of shape wheel hub (2) sets water guide cone (11), and the logarithmic spiral shape blade (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, logarithmic spiral shape blade (1) of the present invention is axially different on class cone hub (2) periphery The coordinate of key point represents as follows on section Curve of wing under, and X and Y represent logarithmic spiral shape blade 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 28.9772 4.8031 11 25.8547 13.5602
2 32.1969 5.3368 12 28.5861 15.0669
3 35.4166 5.8704 13 31.3174 16.5736
4 38.6362 6.4041 14 34.0488 18.0803
5 41.8559 6.9378 15 36.7802 19.587
6 45.0756 7.4715 16 39.5116 21.0937
7 48.2953 8.0051 17 42.243 22.6004
8 51.515 8.5388 18 44.9744 24.1071
9 54.7347 9.0725 19 47.7058 25.6138
10 57.9544 9.6062 20 50.4372 27.1205
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=0.1650x+0.0073；
The right string of logarithmic spiral shape blade (1)：Y=0.5516x-0.7018；
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 -82.5421 -9.6819 11 -74.9703 -28.2068
2 -77.9564 -9.144 12 -58.0275 -21.9386
3 -73.3708 -8.6061 13 -70.7346 -26.6397
4 -68.7851 -8.0682 14 -41.0848 -15.6704
5 -64.1994 -7.5303 15 -66.4989 -25.0727
6 -59.6137 -6.9925 16 -49.5561 -18.8045
7 -55.0281 -6.4546 17 -53.7918 -20.3716
8 -50.4424 -5.9167 18 -62.2632 -23.5056
9 -45.8567 -5.3788 19 -45.3204 -17.2375
10 -41.271 -4.8409 20 -36.8491 -14.1034
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=0.1174x+0.0014；
The right string of logarithmic spiral shape blade (1)：Y=0.3694x-0.4771；
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 35.049 36.9119 11 28.183 42.3335
2 38.9434 41.0132 12 31.1731 47.0372
3 42.8377 45.1145 13 34.1632 51.7409
4 46.732 49.2158 14 37.1532 56.4446
5 50.6264 53.3171 15 40.1433 61.1484
6 54.5207 57.4185 16 43.1334 65.8521
7 58.415 61.5198 17 46.1235 70.5558
8 62.3094 65.6211 18 49.1136 75.2595
9 66.2037 69.7224 19 52.1037 79.9632
10 70.098 73.8237 20 55.0938 84.667
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=1.0522x+0.0118；
The right string of logarithmic spiral shape blade (1)：Y=0.0001x2+1.5697x-1.9677；
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 18.44 -55.814 11 28.439 -51.406
2 20.489 -62.015 12 31.457 -57.118
3 22.538 -68.217 13 34.476 -62.83
4 24.587 -74.418 14 37.494 -68.541
5 26.636 -80.62 15 40.513 -74.253
6 28.685 -86.821 16 43.531 -79.965
7 30.733 -93.023 17 46.55 -85.677
8 32.782 -99.225 18 49.569 -91.388
9 34.831 -105.426 19 52.587 -97.1
10 36.88 -111.628 20 55.606 -102.812
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=0.0001x2-3.0283x+0.0087；
The right string of logarithmic spiral shape blade (1)：Y=-0.0001x2-1.8885x+2.3695；
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 logarithmic spiral shape blade (1)：Y=0.0727x+0.0059；
The right string of logarithmic spiral shape blade (1)：Y=0.2255x-0.2832.
With reference to Fig. 4-12, a kind of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade proposed by the present invention enters one The preferred scheme of step is：
The quantity of logarithmic spiral shape blade (1) of the present invention is 1 to 5 piece；The section of the logarithmic spiral shape blade (1) Shape is in symmetrical airfoil type or asymmetric airfoil type；The pitch of the logarithmic spiral shape blade (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 coordinate of key point represents as follows on the periphery curve in the mistake rotary shaft section of the class cone hub (2), X and Z The spatial value of key point on the periphery curve in the mistake rotary shaft section of class cone hub (2), design parameter ginseng are represented respectively It is shown in Table 6：
Table 6
Sequence number X Z Sequence number X Z
1 -72.0000 300.0000 11 0.0000 0.0000
2 -67.7113 265.3424 12 21.1078 25.8459
3 -63.1372 230.7214 13 31.9181 59.0301
4 -58.2120 196.1487 14 40.0684 92.9837
5 -52.8410 161.6426 15 46.8766 127.2343
6 -46.8767 127.2343 16 52.8410 161.6425
7 -40.0684 92.9837 17 58.2120 196.1487
8 -31.9180 59.0301 18 63.1372 230.7214
9 -21.1078 25.8459 19 67.7112 265.3425
10 0.0000 0.0000 20 72.0000 300.0000
A kind of Application Example of horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade proposed by the present invention is as follows：
Using one kind proposed by the present invention with right under the conditions of using the marine tidal-current energy flow velocity of coastal region as 1.5m/s~2.5m/s Exemplified by the horizontal axis tidal current energy hydraulic turbine of number 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 logarithmic spiral shape blade (1) of the present invention is 2 pieces；The cross sectional shape selection of logarithmic spiral shape blade (1) Symmetrical airfoil type；The height of logarithmic spiral shape blade (1) is 310cm, maximum gauge 180cm, minimum pitch 85cm, pitch Gradual change ratio is 5:6；The height of class cone hub (2) is 310cm, maximum gauge 105cm；The height of the water guide cone (11) is 170cm, 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 logarithmic spiral shape blade (1) of the present invention is 1 piece；The cross sectional shape selection of logarithmic spiral shape blade (1) Asymmetric airfoil type；The height of constant speed spiral vane (1) is 320cm, maximum gauge 190cm, minimum pitch 85cm, spiral shell It is 5 away from gradual change ratio:6；The height of class cone hub (2) is 320cm, maximum gauge 105cm；The height of the water guide cone (11) For 190cm, 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 logarithmic spiral shape blade (1) of the present invention is 5 pieces；The cross sectional shape selection of logarithmic spiral shape blade (1) Symmetrical airfoil type；The height of logarithmic spiral shape blade (1) is 320cm, maximum gauge 160cm, minimum pitch 90cm, pitch Gradual change ratio is 5:6；The height of class cone hub (2) is 320cm, maximum gauge 105cm；The height of the water guide cone (11) is 160cm, a diameter of 105cm.
The present invention concrete application process be：The runner of the present invention include logarithmic spiral shape blade (1) with along class taper cone pulley Hub (2) coordinated, when the logarithmic spiral shape blade (1) of the trend impact runner of the present invention in ocean, by pair of runner The kinetic energy that the energy conversion of marine tidal-current energy is runner is driven the defeated of the horizontal axis tidal current energy hydraulic turbine by number spiral vane (1) Shaft rotates, and by the kinetic energy that the energy conversion of trend is the horizontal axis tidal current energy hydraulic turbine, is further driven to electrical power generators, trend 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 logarithmic spiral shape blade proposed by the present invention The specific support of tidal current energy water turbine technological thought, it is impossible to 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 logarithmic spiral shape blade, including main shaft (3), cabinet (5), thrust bearing (6), shaft coupling (7), generator (8), frame (9), base (10), water guide cone (11), cabinet (5) lower section is respectively with frame (9) supported with base (10)；Characterized in that, also include the logarithmic spiral shape blade (1) in two dimensional logarithmic spiral wire shaped, 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 logarithmic spiral shape blade (1) is by thrust bearing (6) with along class taper cone pulley The axial gradual change of hub (2), which stretches, to be formed spatial warping shape and is uniformly set on the periphery of class cone hub (2)；It is described right Number 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 logarithmic spiral shape blade (1) section respectively is sat Scale value, the parameter at 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 28.9772 4.8031 11 25.8547 13.5602 2 32.1969 5.3368 12 28.5861 15.0669 3 35.4166 5.8704 13 31.3174 16.5736 4 38.6362 6.4041 14 34.0488 18.0803 5 41.8559 6.9378 15 36.7802 19.587 6 45.0756 7.4715 16 39.5116 21.0937 7 48.2953 8.0051 17 42.243 22.6004 8 51.515 8.5388 18 44.9744 24.1071 9 54.7347 9.0725 19 47.7058 25.6138 10 57.9544 9.6062 20 50.4372 27.1205
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=0.1650x+0.0073；
The right string of logarithmic spiral shape blade (1)：Y=0.5516x-0.7018；
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 -82.5421 -9.6819 11 -74.9703 -28.2068 2 -77.9564 -9.144 12 -58.0275 -21.9386 3 -73.3708 -8.6061 13 -70.7346 -26.6397 4 -68.7851 -8.0682 14 -41.0848 -15.6704 5 -64.1994 -7.5303 15 -66.4989 -25.0727 6 -59.6137 -6.9925 16 -49.5561 -18.8045 7 -55.0281 -6.4546 17 -53.7918 -20.3716 8 -50.4424 -5.9167 18 -62.2632 -23.5056 9 -45.8567 -5.3788 19 -45.3204 -17.2375 10 -41.271 -4.8409 20 -36.8491 -14.1034
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=0.1174x+0.0014；
The right string of logarithmic spiral shape blade (1)：Y=0.3694x-0.4771；
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 35.049 36.9119 11 28.183 42.3335 2 38.9434 41.0132 12 31.1731 47.0372 3 42.8377 45.1145 13 34.1632 51.7409 4 46.732 49.2158 14 37.1532 56.4446 5 50.6264 53.3171 15 40.1433 61.1484 6 54.5207 57.4185 16 43.1334 65.8521 7 58.415 61.5198 17 46.1235 70.5558 8 62.3094 65.6211 18 49.1136 75.2595 9 66.2037 69.7224 19 52.1037 79.9632 10 70.098 73.8237 20 55.0938 84.667
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=1.0522x+0.0118；
The right string of logarithmic spiral shape blade (1)：Y=0.0001x2+1.5697x-1.9677；
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 18.44 -55.814 11 28.439 -51.406 2 20.489 -62.015 12 31.457 -57.118 3 22.538 -68.217 13 34.476 -62.83 4 24.587 -74.418 14 37.494 -68.541 5 26.636 -80.62 15 40.513 -74.253 6 28.685 -86.821 16 43.531 -79.965 7 30.733 -93.023 17 46.55 -85.677 8 32.782 -99.225 18 49.569 -91.388 9 34.831 -105.426 19 52.587 -97.1 10 36.88 -111.628 20 55.606 -102.812
Two curvilinear equations after fitting are respectively：
The left string of logarithmic spiral shape blade (1)：Y=0.0001x2-3.0283x+0.0087；
The right string of logarithmic spiral shape blade (1)：Y=-0.0001x2-1.8885x+2.3695；
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 logarithmic spiral shape blade (1)：Y=0.0727x+0.0059；
The right string of logarithmic spiral shape blade (1)：Y=0.2255x-0.2832.
A kind of 2. horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade according to claim 1, it is characterised in that The quantity of the logarithmic spiral shape blade (1) is 1~5 piece.
A kind of 3. horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade according to claim 2, it is characterised in that The cross sectional shape of the logarithmic spiral shape blade (1) is in symmetrical airfoil type or asymmetric airfoil type.
A kind of 4. horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade according to claim 3, it is characterised in that The pitch of the logarithmic spiral shape blade (1) is 20~40 centimetres, and logarithmic spiral shape blade (1) axial pitch gradually increases, spiral shell It is 5 away from gradient scale:6.
A kind of 5. horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade 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 logarithmic spiral shape blade, its feature exist according to claim 1 or 5 In：The three-dimensional log spiral for being shaped as logarithmic spiral shape blade (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 7. horizontal axis tidal current energy hydraulic turbine with logarithmic spiral shape blade according to claim 5, 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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