CN105604776A - Six-working-condition three-vane rotating wheel bilateral tidal power generation water turbine - Google Patents
Six-working-condition three-vane rotating wheel bilateral tidal power generation water turbine Download PDFInfo
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- CN105604776A CN105604776A CN201510570752.6A CN201510570752A CN105604776A CN 105604776 A CN105604776 A CN 105604776A CN 201510570752 A CN201510570752 A CN 201510570752A CN 105604776 A CN105604776 A CN 105604776A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000010248 power generation Methods 0.000 title claims abstract description 14
- 230000002146 bilateral effect Effects 0.000 title abstract 3
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000010349 pulsation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HOWHQWFXSLOJEF-MGZLOUMQSA-N systemin Chemical group NCCCC[C@H](N)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(O)=O)C(=O)OC(=O)[C@@H]1CCCN1C(=O)[C@H]1N(C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H]2N(CCC2)C(=O)[C@H]2N(CCC2)C(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)N)C(C)C)CCC1 HOWHQWFXSLOJEF-MGZLOUMQSA-N 0.000 description 1
- 108010050014 systemin Proteins 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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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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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention belongs to the technical field of fluid machinery and engineering equipment, and particularly relates to a six-working-condition three-vane rotating wheel bilateral tidal bulb tubular turbine in which a brand new guide vane profile is adopted, and vanes of a rotating wheel are regular in thickness distribution. The machine set comprises a water inlet tube, a lamp base, a tubular base, vanes, the rotating wheel and a tail water tube, wherein the shapes of the vanes are designed; the brand new guide vane profile is adopted, so that flow is more smooth, and resistance loss in a flow channel is reduced; the number of the vanes of the rotating wheel is reduced from 4 to 3, so that a flow of the machine set is increased; meanwhile, the vanes of the rotating wheel are optimally designed, S-shaped vanes of the rotating wheel are adopted, and a new thickness-changing rule is adopted from an inlet to an outlet, so that a water turbine has high efficiency during running in forward and backward directions. Compared with the conventional four-vane rotating wheel tidal machine set, the six-working-condition three-vane rotating wheel bilateral tidal power generation water turbine has the advantages that the efficiency, the flow and the power of the forward-backward water turbine are increased, the vibration and pressure pulsation are lowered, and the running stability of the water turbine is improved.
Description
Technical field
The invention belongs to Fluid Machinery and Engineering equipment technical field, relate in particular to the brand-new Guide vane profile of a kind of employing and turnSix operating mode three blade rotary wheel bidirectional tidal bulb through-flow turbines of impeller blade thickness distribution rule.
Background technology
Tide power plant built and that build again mainly adopts Bulb Turbine Units both at home and abroad. With other water wheels unit phasesSimilar, the performance of tidal power generation unit depends on the dynamic characteristics of internal flow situation and unit to a great extent. In waterpowerIn design studies, the flow field analysis of the hydraulic turbine mainly relies on CFD to calculate and model test, by the research and development of decades, orderFront oneself warp can be predicted hydraulic performance and unsteady flow dynamic characteristic more exactly, and has further carried out more flow-inductionDynamic characteristics research.
Novel bidirectional tidal generating set operating condition complexity, comprises the forward hydraulic turbine, forward water pump, forward sluicing, anti-To the hydraulic turbine, oppositely water pump and totally 6 operating modes that oppositely sluice. Due to morning and evening tides unit way traffic, require forward water wheelsMachine operating mode and oppositely hydraulic turbine operating mode all will possess higher efficiency, traditional Hydraulic Design Method can only bonding to the hydraulic turbineThe efficiency of operating mode, can not ensure generated energy maximum. Morning and evening tides unit is because change of water level is fast in addition, and waterpower fluctuation is large, causes unitOperation stability is poor, and vibration and pressure fluctuation are larger.
Summary of the invention
In order to improve the inflow-rate of water turbine of unit and to reduce the pressure fluctuation on blade, the present invention proposes a kind of high efficiency newType six operating mode three blade rotary wheel bidirectional tide power generation water turbines, comprising: the inlet tube, cast seat and the draft tube that connect successively, withAnd be arranged on bulb, the multi-disc stator being connected with bulb tail end and cast seat inwall in cast seat, be arranged on cast seatRunner with draft tube intersection; The molded line that the intermediate cross-section of described stator adopts has 20 points, and each point is in rectangular coordinate systemIn position as shown in table 1;
Table 1: stator intermediate cross-section profile coordinate point
| Sequence number | 401 | 402 | 403 | 404 | 405 | 406 | 407 | 408 | 409 | 410 |
| X | -243.4 | -200 | -150 | -100 | -50 | 0 | 58 | 116 | 174 | 232 |
| Y | -40.67 | -9.57 | 8.05 | 19.31 | 25.44 | 26.93 | 22.68 | 13.43 | -0.14 | -17.22 |
| Sequence number | 411 | 412 | 413 | 414 | 415 | 416 | 417 | 418 | 419 | 420 |
| X | 283.1 | 232 | 174 | 116 | 58 | 0 | -50 | -100 | -150 | -200 |
| Y | -36.12 | -36.76 | -34.21 | -31.69 | -29.59 | -28.91 | -29.47 | -32.42 | -38.14 | -46.14 |
The structure of described runner is: multiple turbine blades, this turbine blade energy are evenly installed in the side at hub bodyAround the pivot rotation of self;
The molded line that the intermediate cross-section of described turbine blade adopts has 20 points, the position of each point in rectangular coordinate systemAs shown in table 2;
Table 2: turbine blade intermediate cross-section profile coordinate point
The quantity of described turbine blade is 3.
Beneficial effect of the present invention is: improved positive and negative two-way turbine efficiency with respect to other existing morning and evening tides units, carriedHigh inflow-rate of water turbine and the power of unit, has reduced vibration and pressure fluctuation, and the operation stability of unit is improved.
Brief description of the drawings
Fig. 1 is the schematic diagram of described bidirectional tide power generation water turbine structure;
Fig. 2 is the structural representation of described bidirectional tide power generation water turbine runner;
Fig. 3 is described bidirectional tide power generation water turbine stator figure;
Fig. 4 is described bidirectional tide power generation water turbine runner bucket figure;
Fig. 5 is described bidirectional tide power generation water turbine stator intermediate cross-section schematic diagram;
Fig. 6 is described bidirectional tide power generation water turbine stator turbine blade intermediate cross-section schematic diagram;
Fig. 7 is the pressure fluctuation comparison diagram on 3 blades and 4 blades;
Fig. 8 is the inflow-rate of water turbine comparison diagram of 3 blades and 4 blade units.
Number in the figure: 1 one inlet tubes; 2 one bulbs; 3 one cast seats; 4 one stators; 5 one runners; 6 one draft tubes; 7 oneTake turns firm body; 8 one runner buckets.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment is elaborated.
As shown in Figure 1, this this hydraulic turbine comprises the inlet tube 1, cast seat 3 and the draft tube 6 that connect successively, and is arranged onBulb 2, the multi-disc stator 4 being connected with bulb 2 tail ends and cast seat 3 inwalls in cast seat 3, be arranged on cast seat 3 andThe runner 5 of tail water 6 pipe intersections.
As shown in Figure 2, the structure of runner 5 is: multiple turbine blades 8, turbine blade 8 are installed in the side of taking turns firm body 7Can, around the pivot rotation of oneself, select 4 turbine blades at this.
As shown in Figure 3 and Figure 5, the intermediate cross-section of stator 4 is designed to brand-new molded line, and this Guide vane profile is by two sections of head and the tailThe closed curve of the curve composition being connected, gets 20 points from molded line, and the position of each point in rectangular coordinate system is as table 1Show.
Table 1: stator intermediate cross-section profile coordinate point
| Sequence number | 401 | 402 | 403 | 404 | 405 | 406 | 407 | 408 | 409 | 410 2 --> |
| X | -243.4 | -200 | -150 | -100 | -50 | 0 | 58 | 116 | 174 | 232 |
| Y | -40.67 | -9.57 | 8.05 | 19.31 | 25.44 | 26.93 | 22.68 | 13.43 | -0.14 | -17.22 |
| Sequence number | 411 | 412 | 413 | 414 | 415 | 416 | 417 | 418 | 419 | 420 |
| X | 283.1 | 232 | 174 | 116 | 58 | 0 | -50 | -100 | -150 | -200 |
| Y | -36.12 | -36.76 | -34.21 | -31.69 | -29.59 | -28.91 | -29.47 | -32.42 | -38.14 | -46.14 |
The equation of two curves after matching is respectively:
y＝0.000001x3-0.001x2-0.0291x+27.926；
y＝0.0000001x3-0.0002x2+0.0124x-30.419。
As shown in Figure 4 and Figure 6, for ensureing hydraulic performance and the structural strength of runner, by the intermediate cross-section of turbine blade 8Be designed to the closed curve of two sections of end to end curves compositions, get 20 points from molded line, each point is in rectangular coordinate systemPosition is as shown in table 2.
Table 2: turbine blade intermediate cross-section profile coordinate point
The equation of two curves after matching is respectively:
y＝-0.0000005x3-0.0001x2-0.5792x+47.268；
y＝-0.0000005x3+0.0002x2-0.5876x-32.644。
The present invention tests on TH-CX-01 model unit, has analyzed the flow losses of each several part runner, analyzesFlow channel shape change the impact on energy characteristics, cavitation performance and stability, analyzed the hydraulic performance of different operating conditions.
By test data and actual effect, can find, use unit of the present invention with respect to other existing tide machinesGroup has improved positive and negative two-way efficiency, has increased unit inflow-rate of water turbine and power, has reduced vibration and pressure fluctuation, the hydraulic turbine simultaneouslyOperation stability be improved.
What at present every other tidal power generation water wheels unit all adopted in the world is the runner of 4 blades, because tradition is seenIt is strong that thought thinks that 4 blade rotary wheels have flow control ability, the runner internal pressure little feature of pulsing. And three blade rotary wheels that the present invention proposesThat the unique case that is successfully applied in the world tidal power station unit at present (has been successfully applied to tall building, river tidal power station 1 of ChinaNumber unit), in R&D process, by the molded line optimization of more than 30 stators and more than 60 runner, successfully by the pressure on bladePower pulsation is reduced to also more lower slightly than the pressure fluctuation of 4 traditional blade rotary wheels, as shown in Figure 7. Improved the overcurrent of unit simultaneouslyAmount, Fig. 8, to large flow excursion, sees in efficient district, while having ensured the tide is flowing and ebbing unit have more generated energy, higher efficiency andLess pressure fluctuation and vibration.
This embodiment is only preferably detailed description of the invention of the present invention, but protection scope of the present invention is not limited to this,Any be familiar with those skilled in the art the present invention disclose technical scope in, the variation that can expect easily or replacement,Within all should being encompassed in protection scope of the present invention. Therefore, protection scope of the present invention should be with the protection domain of claimBe as the criterion.
Claims (2)
1. six operating-condition bidirectional tide power generation water turbines, is characterized in that, comprise the inlet tube (1), the cast seat that connect successively(3) and draft tube (6), and be arranged on bulb (2) in cast seat (3), with bulb (2) tail end and cast seat (3) inMulti-disc stator (4) that wall connects, be arranged on the runner (5) of cast seat (3) and draft tube (6) intersection, it is characterized in that, for subtractingThe flow losses of little stator section, the molded line that the intermediate cross-section of described stator (4) adopts is by two sections of Curves that connect that join end to endThe closed curve of composition, on this molded line, 20 somes coordinate in rectangular coordinate system is as shown in the table:
The structure of described runner (5) is: multiple turbine blades (8), this hydraulic turbine leaf are evenly installed in the side at hub body (7)Sheet (8) can be around the pivot rotation of self;
The closure that the molded line that the intermediate cross-section of described turbine blade (8) adopts is made up of two sections of Curves of connecing of joining end to endCurve, on this molded line, 20 somes position in rectangular coordinate system is as shown in the table:
。
2. six operating-condition bidirectional tide power generation water turbines according to claim 1, is characterized in that described turbine blade (8)Quantity be 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510570752.6A CN105604776B (en) | 2015-09-09 | 2015-09-09 | A kind of blade rotary wheel bidirectional tide power generation water turbine of six operating mode three |
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| CN201510570752.6A CN105604776B (en) | 2015-09-09 | 2015-09-09 | A kind of blade rotary wheel bidirectional tide power generation water turbine of six operating mode three |
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| CN105604776A true CN105604776A (en) | 2016-05-25 |
| CN105604776B CN105604776B (en) | 2017-11-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155266A (en) * | 2021-03-08 | 2021-07-23 | 西安理工大学 | Water turbine cavitation initial determination method integrating vibration test and pressure pulsation test |
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| CN201221433Y (en) * | 2008-07-03 | 2009-04-15 | 水利部杭州机械设计研究所 | Bidirectional six-operating condition tide machine unit |
| US20100260596A1 (en) * | 2009-04-13 | 2010-10-14 | Alexander Gokhman | Hydraulic bulb turbine with mixed-flow propeller runner |
| CN102182622A (en) * | 2011-04-07 | 2011-09-14 | 清华大学 | Six-operating-condition bidirectional tide power generation water turbine |
| CN103206331A (en) * | 2013-02-07 | 2013-07-17 | 河海大学 | Low-head efficient shaft-extension tubular pump turbine and blades thereof |
| CN103216375A (en) * | 2013-04-10 | 2013-07-24 | 河海大学 | Bulb tubular water turbine for micro water head power station |
| CN104454631A (en) * | 2014-10-30 | 2015-03-25 | 河海大学 | Low-lift high-flow reversible tubular pump with asymmetric SX type blades |
| DE102014212729A1 (en) * | 2014-07-01 | 2015-06-11 | Voith Patent Gmbh | Hydropower plant with bi-directional operation |
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2015
- 2015-09-09 CN CN201510570752.6A patent/CN105604776B/en active Active
Patent Citations (7)
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| CN201221433Y (en) * | 2008-07-03 | 2009-04-15 | 水利部杭州机械设计研究所 | Bidirectional six-operating condition tide machine unit |
| US20100260596A1 (en) * | 2009-04-13 | 2010-10-14 | Alexander Gokhman | Hydraulic bulb turbine with mixed-flow propeller runner |
| CN102182622A (en) * | 2011-04-07 | 2011-09-14 | 清华大学 | Six-operating-condition bidirectional tide power generation water turbine |
| CN103206331A (en) * | 2013-02-07 | 2013-07-17 | 河海大学 | Low-head efficient shaft-extension tubular pump turbine and blades thereof |
| CN103216375A (en) * | 2013-04-10 | 2013-07-24 | 河海大学 | Bulb tubular water turbine for micro water head power station |
| DE102014212729A1 (en) * | 2014-07-01 | 2015-06-11 | Voith Patent Gmbh | Hydropower plant with bi-directional operation |
| CN104454631A (en) * | 2014-10-30 | 2015-03-25 | 河海大学 | Low-lift high-flow reversible tubular pump with asymmetric SX type blades |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155266A (en) * | 2021-03-08 | 2021-07-23 | 西安理工大学 | Water turbine cavitation initial determination method integrating vibration test and pressure pulsation test |
| CN113155266B (en) * | 2021-03-08 | 2022-11-01 | 西安理工大学 | Water turbine cavitation initiation determination method integrating vibration test and pressure pulsation test |
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| CN105604776B (en) | 2017-11-14 |
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Inventor after: Wang Zhengwei Inventor after: Wang Haoping Inventor after: Luo Yongyao Inventor after: Xiao Yexiang Inventor after: Wu Jinchuan Inventor after: Jiang Xiaoyi Inventor before: Wang Zhengwei Inventor before: Luo Yongyao Inventor before: Xiao Yexiang |
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Effective date of registration: 20180211 Address after: 100084 Beijing 100084-82 mailbox Co-patentee after: Longyuan Power Group Limited by Share Ltd Wenling tidal power plant Patentee after: Tsinghua University Address before: 100084 Beijing, Beijing, 100084-82 mailbox Patentee before: Tsinghua University |