CN103742351B - A kind of Bidirectional tubular flow water turbine that utilizes tidal power generation - Google Patents
A kind of Bidirectional tubular flow water turbine that utilizes tidal power generation Download PDFInfo
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- CN103742351B CN103742351B CN201310738718.6A CN201310738718A CN103742351B CN 103742351 B CN103742351 B CN 103742351B CN 201310738718 A CN201310738718 A CN 201310738718A CN 103742351 B CN103742351 B CN 103742351B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The present invention relates to a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation, it comprises forward water inlet flow channel, vertical shaft, bracing frame, two-way generating runner, reverse water inlet flow channel, generator and speed increaser, characterized by further comprising preposition wide movable guide vane and rearmounted wide movable guide vane; Preposition wide movable guide vane is arranged between forward water inlet flow channel and two-way generating runner; Rearmounted wide movable guide vane is arranged between two-way generating runner and reverse water inlet flow channel; Forward water inlet flow channel is forward elliptic cross-section, and its minor axis is golden section with the ratio of major axis; Oppositely water inlet flow channel is reverse elliptic cross-section, and its minor axis is golden section with the ratio of major axis. The present invention adopts the dual measure of the symmetrical wide movable guide vane of oval water flow passage and front and back, greatly improve the composite efficacy of hydraulic turbine operation usefulness, the gross efficiency of generating set generating is significantly improved, be applicable to substitute the tubular turbine of various low water head tidal power stations.
Description
Technical field
The invention belongs to fluid machinery and hydroelectric project equipment technical field, particularly relate to a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation.
Background technology
Along with the large-scale development of China's hydroelectric resources, belong to the middle and high head website that economic indicator is good fewer and feweri, develop low water head run-off river power station has particularly become the focus of research and has entered the practicality stage the exploitation of tide energy thereupon. Known tubular turbine is because its inflow-rate of water turbine is large, rotating speed is high and efficiency is high, and efficient district is wide, compact conformation and the advantage such as layout is simple and become a kind of most economical and suitable hydraulic turbine pattern in low water head water energy development, how to utilize these advantages develop a kind of can be applied to tidal power station, low water head, the large two-way shaft tubular formula of flow unit are significant efficiently.
Chinese patent application 201110363608.7 discloses a kind of " large-scale shaft tubular formula hydraulic generator unit ", this device is, in the both sides of concrete shaft, the water flow passage of walking around vertical shaft is set respectively, the cross section of vertical shaft is streamlined, and current enter the runner envelope of the hydraulic turbine after the movable guide vane place of the hydraulic turbine converges. But this device runner adopts square-section, be circumference transition from import cross section to vane inlet cross section, all more complicated in three-dimensional artificial modeling and manufacture process, practical application effect is not good yet.
Known technology also shows, it is the structure of inlet guide vane that existing bidirectional tidal generating power station adopts movable guide vane mostly. As Chinese patent application 201210511304.5 discloses a kind of " low water head shaft tubular bidirectional high-efficiency rotary wheel of water turbine and electromechanical assembly thereof and supporting runner ", this device comprises runner and dynamo-electric part, and described runner section mainly comprises inlet segment, vertical shaft section, stator section, runner section and tail water pipeline section; Described dynamo-electric part mainly comprises generator, speed increaser, movable guide vane, main shaft and the hydraulic turbine. This device adopts the structure of preposition movable guide vane, although can be by regulating the fit angle of movable guide vane and blade, produce the hydraulic performance of good forward generating, but in the time oppositely generating electricity, because there is no rearmounted movable guide vane, current do not form certain circular rector entering before runner, can not coordinate preferably with blade, cause the waterpower poor-performing that oppositely generates electricity.
The paper that Yang Chunxia delivers " adopts the two-way power generation performance research of morning and evening tides unit (BidirectionalPowerPerformanceofaTidalUnitwithUnilaterala ndDoubleGuideVanes) of one-sided-bilateral activity stator ", study and adopted the one-sided and impact of two kinds of multi-form stators of bilateral activity stator on tubular morning and evening tides unit hydraulic performance, in the time adopting bilateral activity stator, its forward generating efficiency is 85.81%, oppositely generating efficiency is 80.66%, and the gross efficiency of forward and oppositely generating is better than adopting one-sided movable guide vane form; Although adopt bilateral activity stator can improve generating efficiency, but also exist following not enough: in the time generating electricity forward or backwards simultaneously, current will produce whirlpool after water outlet stator enters outlet passage, both cause forward generating efficiency to reduce, and affect again reverse generating efficiency and improve.
For bidirectional tidal generating set operating condition complexity, require forward hydraulic turbine operating mode and reverse hydraulic turbine operating mode all will possess higher efficiency, guarantee generating set overall operation usefulness reaches the highest, and existing Hydraulic Design Method does not still reach maximum generated energy. How to overcome the deficiencies in the prior art and become one of emphasis difficult problem urgently to be resolved hurrily in current fluid machinery and hydroelectric project equipment technical field.
Summary of the invention
The object of the invention is provides a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation for overcoming existing the deficiencies in the prior art, the present invention adopts the symmetrical wide movable guide vane of oval runner and front and back, can improve the gross efficiency of generating set generating, be applicable to substitute the tubular turbine of various low water head tidal power stations.
A kind of Bidirectional tubular flow water turbine that utilizes tidal power generation proposing according to the present invention, it comprises forward water inlet flow channel, vertical shaft, bracing frame, two-way generating runner, reverse water inlet flow channel, generator and speed increaser, wherein: generator is connected by speed increaser with two-way generating runner; Generator and speed increaser are placed in vertical shaft; Characterized by further comprising preposition wide movable guide vane and rearmounted wide movable guide vane; This preposition wide movable guide vane is arranged between forward water inlet flow channel and two-way generating runner; The wide movable guide vane of this postposition is arranged between two-way generating runner and reverse water inlet flow channel; The longitudinal cross-section of described preposition wide movable guide vane and rearmounted wide movable guide vane is two ends streamline tapered wing shape, is arranged in symmetrically two-way generating runner both sides, and each stator two ends are spherical structure, and each stator Internal Spherical Surface and spherical outside surface distortion angle are 10 ° ~ 15 °; Angle theta between stator rotary centerline and the unit rotary centerline of described preposition wide movable guide vane and rearmounted wide movable guide vane setting is 80 °, Sealing Surface and unit rotary centerline that each stator forms are unsettled cross-distribution, and on the molded line of each stator intermediate cross-section, 20 somes coordinate in rectangular coordinate system is as following table 1:
Table 1
| Sequence number | x | y | Sequence number | x | y |
| 6001 | -145.99 | 0 | 6011 | 166.95 | 0 |
| 6002 | -128 | 3.15 | 6012 | 128 | -4.22 |
| 6003 | -96 | 7.83 | 6013 | 96 | -7.83 |
| 6004 | -64 | 10.8 | 6014 | 64 | -11.5 |
| 6005 | -32 | 13.62 | 6015 | 32 | -14.34 |
| 6006 | 0 | 15.25 | 6016 | 0 | -15.25 |
| 6007 | 32 | 14.34 | 6017 | -32 | -13.62 |
| 6008 | 64 | 11.5 | 6018 | -64 | -10.8 |
| 6009 | 96 | 7.83 | 6019 | -96 | -7.83 |
| 6010 | 128 | 4.22 | 6020 | -128 | -3.15 |
Two curvilinear equations after matching are respectively:
y=3E-11x5+9E-09x4-7E-07x3-0.0008x2+0.0067x+14.806；
y=-3E-11x5-9E-09x4+7E-07x3+0.0008x2-0.0067x-14.806；
Described forward water inlet flow channel is forward elliptic cross-section, and the minor axis of this forward elliptic cross-section is golden section with the ratio of major axis; The oval minor axis in water inlet cross section and the ratio linear increment of major axis from forward water inlet cross section to preposition wide movable guide vane section, change 1 at the minor axis in water inlet cross section and the ratio of major axis that enter before preposition wide movable guide vane section, change forward circular cross-section into by forward elliptic cross-section; Described reverse water inlet flow channel is reverse elliptic cross-section, and the minor axis of this reverse elliptic cross-section is golden section with the ratio of major axis; The ellipse short shaft in water inlet cross section and the ratio linear increment of major axis from reverse water inlet cross section to rearmounted wide movable guide vane section, change 1 at the minor axis in water inlet cross section and the ratio of major axis that enter before rearmounted wide movable guide vane section, change reverse circular cross-section into by reverse elliptic cross-section; The cross section of described vertical shaft is streamlined.
Operation principle of the present invention is: generator is arranged in the vertical shaft of upstream of tubular turbine, the section of vertical shaft is streamlined. In the time that forward generates electricity, current enter the forward water inlet flow channel of elliptic cross-section, walk around vertical shaft, converge and enter the runner envelope of tubular turbine at the preposition wide movable guide vane place of tubular turbine, water impact runner blade, drives the rotation of tubular turbine output shaft by runner blade switching energy, and now rearmounted wide movable guide vane is full-gear, current are by rearmounted wide movable guide vane, through oppositely water inlet flow channel outflow; In the time of reverse generating, current are flowed into by reverse water inlet flow channel, current enter the runner envelope of tubular turbine by the wide movable guide vane of postposition, water impact runner blade, drive the rotation of tubular turbine output shaft by runner blade switching energy, now preposition wide movable guide vane is full-gear, and current are by preposition wide movable guide vane, walk around vertical shaft, flow out through forward water inlet flow channel.
The present invention compared with prior art its remarkable advantage is: the one, and the present invention adopts the water flow passage of elliptic cross-section, greatly reduce three-dimensional modeling and manufacture difficulty, thereby ensure level and smooth in runner, the smooth and easy and mobile symmetry of current, improved the operation usefulness of the hydraulic turbine. The 2nd, stator when the present invention can ensure stator unlatching rotates flexibly, inflow-rate of water turbine is large and water guide performance is good, can ensure that again the field of conjugate action water shutoff performance at stator two ends when stator is closed is better. The 3rd, the present invention adopts the dual measure of the symmetrical wide movable guide vane of oval water flow passage and front and back, greatly improve the composite efficacy of hydraulic turbine operation usefulness, in the time that forward generates electricity, by regulating preposition wide movable guide vane angle, make current before runner, form certain circular rector entering, the hydraulic performance that keeps good forward generating, as in the time that rated head is 2.5 meters, the present invention can make forward generating efficiency reach 92%; In the time of reverse generating, by regulating rearmounted wide movable guide vane angle, make current form certain circular rector entering before runner, greatly improve reverse generating efficiency, as in the time that rated head is 2.5 meters, the present invention can make reverse generating efficiency reach 85%. The 4th, the present invention is in the time of declared working condition, blade angle of the present invention is that 70 °, blade angle adjusting range are-4 ° to+4 °, runner blade in running and stator keep synergy simultaneously, thereby improve generating efficiency, particularly all can steadily generate electricity and keep higher generating efficiency large in the situation that at head luffing and changes in flow rate. The 5th, the present invention, still can normal power generation while being 2 meters as head in the time that head is lower, large quantum jump the limiting value of prior art power generation conditions. The present invention is widely used in substituting the shaft tubular formula hydraulic turbine of various low water head tidal power stations.
Brief description of the drawings
Fig. 1 is the top view of a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation that the present invention proposes.
Fig. 2 is the front view of a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation that the present invention proposes.
Fig. 3 is the preposition wide movable guide vane that proposes of the present invention and the arrangement schematic diagram of rearmounted wide movable guide vane.
Fig. 4 is the preposition wide movable guide vane contour structures schematic diagram that the present invention proposes.
Fig. 5 is the wide movable guide vane contour structures of the postposition schematic diagram that the present invention proposes.
Fig. 6 is the stator intermediate cross-section molded line schematic diagram that the present invention proposes.
Fig. 7 is the blade inner edge cross section molded line schematic diagram that the present invention proposes.
Fig. 8 is the blade outer rim cross section molded line schematic diagram that the present invention proposes.
Fig. 9 is the oval water inlet flow channel schematic diagram of forward that the present invention proposes.
Figure 10 is the reverse oval water inlet flow channel schematic diagram that the present invention proposes.
Description of reference numerals: forward water inlet flow channel (1), vertical shaft (2), generator (3), speed increaser (4), bracing frame (5), preposition wide movable guide vane (6), two-way generating runner (7), rearmounted wide movable guide vane (8), oppositely water inlet flow channel (9), stator Internal Spherical Surface (10), stator spherical outside surface (11), stator rotary centerline (12), stator full-gear (13), stator complete shut-down state (14), forward elliptic cross-section (15), forward circular cross-section (16), oppositely elliptic cross-section (17), oppositely circular cross-section (18), angle between stator rotary centerline (12) and unit rotary centerline (19) is θ.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2 and Fig. 6, a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation that the present invention proposes, it comprises forward water inlet flow channel (1), vertical shaft (2), bracing frame (5), two-way generating runner (7), reverse water inlet flow channel (9), generator (3) and speed increaser (4), and described generator (3) is connected by speed increaser (4) with two-way generating runner (7); Generator (3) and speed increaser (4) are placed in vertical shaft (2); Wherein: also comprise preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8); This preposition wide movable guide vane (6) is arranged between forward water inlet flow channel (1) and two-way generating runner (7); The wide movable guide vane of this postposition (8) is arranged between two-way generating runner (7) and reverse water inlet flow channel (9); The longitudinal cross-section of described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) is two ends streamline tapered wing shape, be arranged in symmetrically two-way generating runner (7) both sides, each stator two ends are spherical structure, and each stator Internal Spherical Surface and spherical outside surface distortion angle are 10 ° ~ 15 °; Angle theta between stator rotary centerline (12) and unit rotary centerline (19) that described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) arrange is 80 °, Sealing Surface and unit rotary centerline (19) that each stator forms are unsettled cross-distribution, on the molded line of each stator intermediate cross-section, as shown in Table 1 above, two curvilinear equations after matching are respectively 20 somes coordinate in rectangular coordinate system:
y=3E-11x5+9E-09x4-7E-07x3-0.0008x2+0.0067x+14.806；
y=-3E-11x5-9E-09x4+7E-07x3+0.0008x2-0.0067x-14.806；
Described forward water inlet flow channel is forward elliptic cross-section (15), and the minor axis of this forward elliptic cross-section (15) is golden section with the ratio of major axis; The oval minor axis in water inlet cross section and the ratio linear increment of major axis from forward water inlet cross section to preposition wide movable guide vane (6) section, change 1 at the minor axis in water inlet cross section and the ratio of major axis that enter before preposition wide movable guide vane (6) section, change forward circular cross-section (16) into by forward elliptic cross-section (15); Described reverse water inlet flow channel (9) is reverse elliptic cross-section (17), and the minor axis of this reverse elliptic cross-section (17) is golden section with the ratio of major axis; The ellipse short shaft in water inlet cross section and the ratio linear increment of major axis from reverse water inlet cross section to rearmounted wide movable guide vane (8) section, change 1 at the minor axis in water inlet cross section and the ratio of major axis that enter before rearmounted wide movable guide vane (8) section, change reverse circular cross-section (18) into by reverse elliptic cross-section (17); The cross section of described vertical shaft (2) is streamlined. It is the hydraulic turbine that 100kW～150kW, head range of application are 2m～4m that the present invention is applicable to unit power output.
In conjunction with Fig. 3, Fig. 4 and Fig. 5, the further preferred version of the present invention is: described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are symmetricly set on runner both sides; Angle theta between stator rotary centerline (12) and unit rotary centerline (19) that described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) arrange is 80 °, and Sealing Surface and unit rotary centerline (19) that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) form are unsettled cross-distribution; Preposition wide movable guide vane (6) equates with the two ends width of rearmounted wide movable guide vane (8); Described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are respectively along circumferentially distributing and arrange symmetrically, and its quantity is respectively 10,12 or 14; Described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are controlled water flow and water (flow) direction; In the time that forward generates electricity, rearmounted wide movable guide vane (8) angle is for keeping full-gear; In the time of reverse generating, preposition wide movable guide vane (6) angle is for keeping full-gear, and preposition wide movable guide vane (6) or rearmounted wide movable guide vane (8) are 88 ° from stator full-gear (13) to the angle of stator complete shut-down state (14); The cross section of described vertical shaft (2) is streamlined.
In conjunction with Fig. 7, described two-way generating runner (7) for symmetrical wing, as an example of its diameter 1.6m example, each blade inner edge cross section employing of preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) is by the two ends closed curve that the curve that connects forms that joins end to end, on the intermediate cross-section molded line of each blade, have 20 points, the position of each point in rectangular coordinate system is as following table 2:
Table 2
| Sequence number | x | y | Sequence number | x | y |
| 7101 | -327.15 | 63.75 | 7111 | 324.8 | 398.56 |
| 7102 | -280 | 116.13 | 7112 | 280 | 326.59 |
| 7103 | -210 | 172.73 | 7113 | 210 | 265.32 |
| 7104 | -140 | 210.59 | 7114 | 140 | 236.06 |
| 7105 | -70 | 232.98 | 7115 | 70 | 216.53 |
| 7106 | 0 | 252.23 | 7116 | 0 | 196.69 |
| 7107 | 70 | 271.78 | 7117 | -70 | 177.14 |
| 7108 | 140 | 291.71 | 7118 | -140 | 157.21 |
| 7109 | 210 | 322.97 | 7119 | -210 | 126.12 |
| 7110 | 280 | 366.37 | 7120 | -280 | 90.86 |
Two curvilinear equations after agreeing with are respectively:
y=-5E-15x6-1E-12x5-7E-10x4+3E-06x3-6E-05x2+0.2444x+252.56
y=4E-14x6+1E-11x5-2E-10x4+9E-07x3-8E-05x2+0.2632x+197.23
In conjunction with Fig. 8, described two-way generating runner (7) for symmetrical wing, as an example of its diameter 1.6m example, each blade outer rim cross section employing of preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) is by the two ends closed curve that the curve that connects forms that joins end to end, on the intermediate cross-section molded line of each blade, have 20 points, the position of each point in rectangular coordinate system is as following table 3:
Table 3
| Sequence number | x | y | Sequence number | x | y |
| 7201 | -476.6 | 293.08 | 7211 | 598.04 | 276.26 |
| 7202 | -330 | 316.95 | 7212 | 550 | 270.93 |
| 7203 | -220 | 322.75 | 7213 | 440 | 269.41 |
| 7204 | -110 | 323.05 | 7214 | 330 | 271.08 |
| 7205 | 0 | 316.75 | 7215 | 220 | 277.36 |
| 7206 | 110 | 309.78 | 7216 | 110 | 284.84 |
| 7207 | 220 | 302.06 | 7217 | 0 | 292.72 |
| 7208 | 330 | 294.56 | 7218 | -110 | 297.81 |
| 7209 | 440 | 286.38 | 7219 | -220 | 300.37 |
| 7210 | 550 | 278.62 | 7220 | -330 | 297.71 |
Two curvilinear equations after agreeing with are respectively:
y=6E-16x6-2E-13x5-4E-10x4+3E-07x3-7E-05x2-0.0607x+317.01
y=7E-16x6-5E-13x5-7E-11x4+3E-07x3-7E-05x2-0.0642x+292.39
In conjunction with Fig. 9, forward water inlet flow channel of the present invention (1) is forward elliptic cross-section (15), and the minor axis of this forward elliptic cross-section (15) is golden section with the ratio of major axis; The oval minor axis in water inlet cross section and the ratio linear increment of major axis from forward water inlet cross section to forward movable guide vane (6) section, change 1 at the minor axis in water inlet cross section and the ratio of major axis that enter before forward stator (6) section, become forward circular cross-section (16) from forward elliptic cross-section (15).
In conjunction with Figure 10, reverse water inlet flow channel of the present invention (9) is reverse elliptic cross-section (17), and the minor axis of this reverse elliptic cross-section (17) is golden section with the ratio of major axis; The ellipse short shaft in water inlet cross section and the ratio linear increment of major axis from reverse water inlet cross section to reverse activity stator (8) section, change 1 at the minor axis in water inlet cross section and the ratio of major axis that enter before reverse stator (8) section, change reverse circular cross-section (18) into by reverse elliptic cross-section (17).
Implementation process of the present invention is: generator (3) is arranged in the vertical shaft (2) of the upstream of the hydraulic turbine, the section of vertical shaft (2) is streamlined; In the time that forward generates electricity, current enter the forward water inlet flow channel (1) of elliptic cross-section, walk around vertical shaft (2), locate to converge and enter the runner envelope of tubular turbine at the preposition wide movable guide vane (6) of tubular turbine, the two-way generating runner of water impact (7) blade, drive the rotation of tubular turbine output shaft by two-way generating runner (7) blade switching energy, now rearmounted wide movable guide vane (8) is full-gear, current are by rearmounted wide movable guide vane (8), through oppositely water inlet flow channel (9) outflow; In the time of reverse generating, current are flowed into by reverse water inlet flow channel (9), current enter the runner envelope of tubular turbine by rearmounted wide movable guide vane (8), the two-way generating runner of water impact (7) blade, by the rotation of two-way generating runner (7) blade switching energy band hydraulic turbine output shaft, now preposition wide movable guide vane (6) is full-gear, and current are by preposition wide movable guide vane (6), walk around vertical shaft (2), flow out through forward water inlet flow channel (1).
The explanation not relating in the specific embodiment of the present invention belongs to technology well known in the art, can be implemented with reference to known technology.
The present invention, through validation trial, has obtained satisfied effect.
Claims (7)
1. utilize a Bidirectional tubular flow water turbine for tidal power generation, it comprises forward water inlet flow channel (1), perpendicularWell (2), bracing frame (5), two-way generating runner (7), oppositely water inlet flow channel (9), generator (3) andSpeed increaser (4), wherein: generator (3) is connected by speed increaser (4) with two-way generating runner (7);Generator (3) and speed increaser (4) are placed in vertical shaft (2); Characterized by further comprising preposition wide activityStator (6) and rearmounted wide movable guide vane (8); This preposition wide movable guide vane (6) is arranged on forward water inletBetween runner (1) and two-way generating runner (7); The wide movable guide vane of this postposition (8) is arranged on two-wayBetween electricity runner (7) and reverse water inlet flow channel (9); Described preposition wide movable guide vane (6) and postposition etc.The longitudinal cross-section of wide movable guide vane (8) is two ends streamline tapered wing shape, is arranged in symmetrically two-way generating runner(7) both sides, each stator two ends are spherical structure, each stator Internal Spherical Surface and spherical outside surface distortion angle be 10 °～15 °; During the stator that described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) arrange rotatesAngle theta between heart line (12) and unit rotary centerline (19) is 80 °, the water shutoff that each stator formsFace and unit rotary centerline (19) are unsettled cross-distribution, and on the molded line of each stator intermediate cross-section, 20 points existCoordinate in rectangular coordinate system is as following table 1:
Table 1
Two curvilinear equations after matching are respectively:
y＝3E-11x5+9E-09x4-7E-07x3-0.0008x2+0.0067x+14.806；
y＝-3E-11x5-9E-09x4+7E-07x3+0.0008x2-0.0067x-14.806；
Described forward water inlet flow channel is forward elliptic cross-section (15), the minor axis of this forward elliptic cross-section (15) withThe ratio of major axis is golden section; Water inlet from forward water inlet cross section to preposition wide movable guide vane (6) sectionThe ratio linear increment of the oval minor axis in cross section and major axis, entering before preposition wide movable guide vane (6) sectionThe water inlet minor axis in cross section and the ratio of major axis change 1 into, change forward circle into by forward elliptic cross-section (15)Tee section (16); Described reverse water inlet flow channel (9) is reverse elliptic cross-section (17), and this is oppositely ovalThe minor axis in cross section (17) is golden section with the ratio of major axis; From reverse water inlet cross section, extremely rearmounted wide activity is ledThe ellipse short shaft in water inlet cross section and the ratio linear increment of major axis before leaf (8) section, entering rearmounted wide activityThe minor axis in water inlet cross section and the ratio of major axis before stator (8) section change 1 into, by reverse elliptic cross-section (17)Change reverse circular cross-section (18) into; The cross section of described vertical shaft (2) is streamlined.
2. a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation according to claim 1, its featureBe that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are symmetricly set on runner both sides.
3. a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation according to claim 1, its featureBe that Sealing Surface and unit that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) form rotateCenter line (19) is unsettled cross-distribution.
4. a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation according to claim 1, its featureBe that described preposition wide movable guide vane (6) equates with the two ends width of rearmounted wide movable guide vane (8).
5. a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation according to claim 1, its featureBe that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are respectively along circumferentially distributing symmetricallyArrange, its quantity is respectively 10,12 or 14.
6. according to a kind of Bidirectional tubular streaming water that utilizes tidal power generation described in claim 1,2,3,4 or 5Turbine, is characterized in that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are to water flowControl with water (flow) direction, in the time that forward generates electricity, rearmounted wide movable guide vane (8) angle is for keeping standard-sized sheetState; In the time of reverse generating, preposition wide movable guide vane (6) angle is for keeping full-gear, preposition wideMovable guide vane (6) or rearmounted wide movable guide vane (8) are from stator full-gear (13) to stator complete shut-down state(14) angle is 88 °.
7. a kind of Bidirectional tubular flow water turbine that utilizes tidal power generation according to claim 1, its featureThe cross section that is vertical shaft (2) is streamlined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738718.6A CN103742351B (en) | 2013-12-27 | 2013-12-27 | A kind of Bidirectional tubular flow water turbine that utilizes tidal power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738718.6A CN103742351B (en) | 2013-12-27 | 2013-12-27 | A kind of Bidirectional tubular flow water turbine that utilizes tidal power generation |
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| Publication Number | Publication Date |
|---|---|
| CN103742351A CN103742351A (en) | 2014-04-23 |
| CN103742351B true CN103742351B (en) | 2016-05-18 |
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| CN201310738718.6A Expired - Fee Related CN103742351B (en) | 2013-12-27 | 2013-12-27 | A kind of Bidirectional tubular flow water turbine that utilizes tidal power generation |
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| CN105569914B (en) * | 2015-12-29 | 2018-02-23 | 河海大学 | A kind of energy collector using power generation with marine energy |
| CN105370479B (en) * | 2015-12-29 | 2017-11-17 | 河海大学 | A kind of hydraulic turbine system using power generation with marine energy |
| CN105626358A (en) * | 2015-12-29 | 2016-06-01 | 河海大学 | Energy collection reservoir generating power through ocean energy |
| CN106194552A (en) * | 2015-12-29 | 2016-12-07 | 河海大学 | A kind of axial flow hydraulic turbine utilizing power generation with marine energy |
| CN106014846A (en) * | 2016-07-12 | 2016-10-12 | 北京信息科技大学 | Two-way impeller direct-drive type wave generator set |
| CN108087183B (en) * | 2017-10-30 | 2020-07-07 | 西安理工大学 | Integrated energy storage device capable of bidirectionally utilizing tidal energy |
| CN108108548B (en) * | 2017-12-15 | 2021-04-06 | 西安理工大学 | Optimal design method for draft tube of bidirectional through-flow turbine |
| CN109778808B (en) | 2018-10-30 | 2021-03-19 | 杭州江河水电科技有限公司 | Duct type bidirectional tidal power station system |
| CN109798215B (en) * | 2019-03-27 | 2020-05-29 | 西北农林科技大学 | Novel ultra-low specific speed water pump turbine |
| CN110296032B (en) * | 2019-06-28 | 2021-01-15 | 西安理工大学 | Bidirectional full-through-flow turbine |
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| US4395198A (en) * | 1981-12-07 | 1983-07-26 | Allis-Chalmers Corporation | Continuous twin-stay columns for bulb hydraulic turbines |
| CN101440615A (en) * | 2008-12-08 | 2009-05-27 | 中国水利水电第七工程局有限公司机电安装分局 | Mounting and positioning frame for inner and outer rings at downstream side of water guide mechanism of extra-large bulb tubular turbine generator set |
| CN102536590A (en) * | 2012-01-18 | 2012-07-04 | 河海大学 | Two-stage through-flow turbine with ultralow specific speed |
| CN103206331B (en) * | 2013-02-07 | 2016-03-23 | 河海大学 | A kind of low water head axle extend through flow type pump turbine and blade thereof |
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| US4395198A (en) * | 1981-12-07 | 1983-07-26 | Allis-Chalmers Corporation | Continuous twin-stay columns for bulb hydraulic turbines |
| CN101440615A (en) * | 2008-12-08 | 2009-05-27 | 中国水利水电第七工程局有限公司机电安装分局 | Mounting and positioning frame for inner and outer rings at downstream side of water guide mechanism of extra-large bulb tubular turbine generator set |
| CN102536590A (en) * | 2012-01-18 | 2012-07-04 | 河海大学 | Two-stage through-flow turbine with ultralow specific speed |
| CN103206331B (en) * | 2013-02-07 | 2016-03-23 | 河海大学 | A kind of low water head axle extend through flow type pump turbine and blade thereof |
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