CN101956641A - Guiding device for horizontal-shaft tidal generation water turbine - Google Patents
Guiding device for horizontal-shaft tidal generation water turbine Download PDFInfo
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- CN101956641A CN101956641A CN2010105119235A CN201010511923A CN101956641A CN 101956641 A CN101956641 A CN 101956641A CN 2010105119235 A CN2010105119235 A CN 2010105119235A CN 201010511923 A CN201010511923 A CN 201010511923A CN 101956641 A CN101956641 A CN 101956641A
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- guide device
- flow guide
- water turbine
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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 invention discloses a guiding device for a horizontal-shaft tidal generation water turbine, which comprises an inlet, a contraction section, a throat part, an expansion section, an outlet and a coaming symmetrically arranged relative to a centre line, wherein the inlet, the contraction section, the throat part, the expansion section and the outlet are combined along with the flow sequence to form an inner wall surface; the inner wall surface has a hatching line equation of z=0.0066x5-0.0524x4+0.149x3+0.0103x2-0.5836x+2.9263; and one end of the coaming is welded with the outlet and the other end of the coaming is welded on the expansion section to form an outer wall surface. The invention provides a guiding device for the horizontal-shaft tidal generation water turbine for horizontally generating flowing kinetic energy by using lower-water velocity tidal current or ocean current, wherein the guiding device also can be applied to a wind power generation device.
Description
Technical field
What the present invention relates to is a kind of flow guide device of horizontal axis water turbine.
Background technique
Trend can mainly contain horizontal axis and two kinds of forms of vertical shaft by water turbine.The running shaft of horizontal axis tidal power generating turbine impeller is parallel with water (flow) direction or sea level, and it is little to have a device vibration, and startability is good, generating efficiency height, characteristics such as structure is simple relatively.Whether horizontal axis tidal power generating water turbine installs current-collecting device additional by the impeller outside can be divided into expanding and spacious water type again.
In order to improve tidal power generating water turbine startability and energy utilization efficiency, domestic and international many scholars have carried out trend can water turbine structure and Study on hydrodynamic performance.In theory, install startability and the capacity usage ratio that flow guide device can improve the tidal power generating water turbine additional in the tidal power generating turbine impeller outside.Colleges and universities such as Harbin Engineering University, Tsing-Hua University did correlative study and made certain gains on tidal power generating water turbine flow guide device.
Publication number is the flow guide device that discloses a kind of vertical-axis tide generator in the patent document of CN 101319648A, and the characteristics of this technological scheme are by the flow guide device inlet, contraction section, and intermediate flow channel, diffuser, and sprue is formed in the flow guide device outlet.Quicken during the leading portion of fluid by contraction section and intermediate flow channel, reduce pressure recovery to the flow guide device exit velocity from the end of middle runner.Make fluid through roller position the time, have higher flow velocity like this, be convenient to improve the utilization ratio of water energy, and recover stable flowing state in the downstream of runner.This device also is provided with auxiliary flow, flow guide device inlet fluoran stream surface circular arc low pressure place is connected with the opening of intermediate flow channel end, and this structure will produce pumping action to the fluid of middle runner, enlarge the pressure reduction of roller position front and back, promote that fluid further quickens, and improve the fluidised form of fluid.
Summary of the invention
The object of the present invention is to provide a kind of can so that horizontal axis tidal power generating water turbine in lower trend or the following startup of ocean current, and it is simple in structure, production, processing, easily manufactured, can improve horizontal axis tidal power generating water turbine flow dynamics, the flow guide device of the horizontal axis tidal power generating water turbine of an energy utilization efficiency of tidal power generating water turbine of improving the standard.
The object of the present invention is achieved like this:
Comprise inlet, contraction section with respect to the center line symmetric arrangement, throat, diffuser, outlet and coaming plate, inlet, contraction section, throat, diffuser and outlet longshore current sequential combination constitute internal face, and the hatching line equation of internal face is z=0.0066x
5-0.0524x
4+ 0.149x
3+ 0.0103x
2-0.5836x+2.9263, coaming plate one end is welded on and constitutes outer wall on the diffuser with outlet welding, the other end.
The present invention can also comprise:
1, also comprise structural bead, structural bead is connected between internal face and the outer wall.
2, receive expansion form in back before described internal face is, middle least radius place is a throat, inlet radius R
1, throat radius R
0, the outlet radius R
2Ratio be 1.2～1.3: 1: 1.6～1.8.
3, the soldering point of coaming plate and diffuser is positioned at 0.85～0.95 double-length degree place of diffuser.
4, throat is positioned at 0.4～0.45 double-length degree place, length L and throat radius R
0Ratio be 0.85～0.95.
Turbine blade is positioned at the throat position of flow guide device, and the flow guide device of this horizontal axis tidal power generating water turbine utilizes the interference of wall molded lines stream field, and the impeller location place flow velocity in the flow guide device is increased, and improves the startability and the capacity usage ratio of water turbine; Utilize the oblique chimb design of flow guide device outlet, form whirlpool, the fluid in the flow guide device is produced pumping action, improve the standard spool startability of tidal power generating water turbine and a capacity usage ratio in the wake zone.Numerical simulation and experimental research show, compare with the horizontal axis tidal power generating water turbine of no flow guide device, and this flow guide device can make the energy utilization efficiency of horizontal axis tidal power generating water turbine improve about twice, starts flow velocity and is reduced to 0.7m/s by 1.1m/s.
Patent of the present invention and publication number are that the flow guide device of disclosed a kind of vertical-axis tide generator exists obviously different in the patent document of CN 101319648A: 1. water conservancy diversion object difference.Patent of the present invention is mainly used on horizontal axis tidal power generating water turbine or the horizontal axis wind-driven generator, and publication number is that disclosed flow guide device is mainly used on vertical-axis tide water turbine or the vertical axis aerogenerator in the patent document of CN 101319648A; 2. structural type difference.This patent, is determined distinctive flow guide device internal face hatching line, radius ratio, length ratio and is given birth to the oblique chimb in whirlpool by a large amount of theoretical calculation and experimental research according to the structural feature of horizontal axis tidal power generating water turbine; 3.The working principle difference.This patent mainly is to utilize the interference of wall molded lines stream field and tiltedly chimb design, impeller location place flow velocity in the flow guide device is increased, improve the startability and the capacity usage ratio of water turbine, and publication number is disclosed flow guide device improves the vertical-axis tide water turbine in the patent document of CN 101319648A by fluid speedup and auxiliary flow startability and capacity usage ratio.The present invention has following characteristics: 1. and simple in structure, production, processing, easily manufactured; 2. flow guide device not only can be applied on the horizontal axis tidal power generating water turbine, and can be applied on the horizontal axis wind-driven generator; 3. a startability of tidal power generating water turbine of can effectively improving the standard; 4. a capacity usage ratio of tidal power generating water turbine of can effectively improving the standard; 5. the oblique chimb design of streamlined internal face and outlet makes flow guide device inlet, flow guide device inside, flow guide device outlet and place, wake zone fluidised form relatively stable, has reduced cavitation erosion simultaneously and has streamed the destruction of effect to flow guide device and turbine impeller.
The invention provides a kind of flow guide device that utilizes the lower trend of water velocity or ocean current level to the horizontal axis tidal power generating water turbine of the kinetic energy generating of flowing, this device also can be applicable to wind generating unit.
Description of drawings
Fig. 1 horizontal axis tidal power generating water turbine flow guide device structure is always schemed;
Fig. 2 horizontal axis tidal power generating water turbine flow guide device front elevation;
Fig. 3 horizontal axis tidal power generating water turbine side view;
Fig. 4 numerical simulation calculation energy utilization efficiency curve;
Fig. 5 tests and obtains the energy utilization efficiency curve.
Embodiment
The present invention is described in detail for example below in conjunction with accompanying drawing:
In conjunction with Fig. 1, the flow guide device of horizontal axis tidal power generating water turbine comprises flow guide device inlet 1, contraction section 2, flow guide device throat 3, diffuser 4, flow guide device outlet 5, structural bead 6, coaming plate 7.This flow guide device is with respect to the center line symmetric arrangement.Flow guide device inlet 1, contraction section 2, flow guide device throat 3, diffuser 3 and flow guide device export the internal face that 5 longshore current sequential combination have constituted flow guide device, and the hatching line equation of internal face is z=0.0066x
5-0.0524x
4+ 0.149x
3+ 0.0103x
2-0.5836x+2.9263.Outer wall coaming plate 7 has the effect of steady flow condition and reinforced structure intensity simultaneously, coaming plate 7 one ends and 1 welding of flow guide device inlet, and the other end and 4 welding of flow guide device diffuser, soldering point is positioned at 0.85～0.95 place of diffuser 4.Structural bead 6 is used for connecting inside and outside wall, strengthens the structural strength of flow guide device.Receive expansion form in back before described flow guide device is, middle least radius place is a flow guide device throat 5, the radius R of flow guide device inlet 1
1, flow guide device throat 3 radius R
0, flow guide device outlet 5 radius R
2, R
1: R
0: R
2Be 1.2～1.3: 1: 1.6～1.8.Turbine impeller 8 is positioned at flow guide device throat 3 positions, and throat 3 is positioned at flow guide device 0.4～0.45 double-length degree place, flow guide device length L and throat's 3 radius Rs
0Ratio be 0.85～0.95.The flow guide device of this horizontal axis tidal power generating water turbine utilizes the interference of internal face molded lines stream field, and the impeller 8 position flow velocitys in the flow guide device are increased, and improves the startability and the capacity usage ratio of water turbine.Simultaneously, utilize the oblique chimb design of flow guide device outlet, form whirlpool, the fluid in the flow guide device is produced pumping action, the impeller 8 position flow velocitys in the flow guide device are increased, improve the startability and the capacity usage ratio of water turbine in the wake zone.Numerical simulation and experimental research show, compare with the horizontal axis tidal power generating water turbine of no flow guide device, and this flow guide device can make the energy utilization efficiency of horizontal axis tidal power generating water turbine improve about twice, starts flow velocity and is reduced to 0.7m/s by 1.1m/s.The front elevation of flow guide device as shown in Figure 2, the side view of flow guide device is as shown in Figure 3.Numerical simulation calculation energy utilization efficiency curve and experiment obtain the energy utilization efficiency curve respectively as shown in Figure 4 and Figure 5.The transverse axis of curve is the setting speed ratio of numerical simulation calculation among Fig. 4, and the longitudinal axis is an energy utilization efficiency.The transverse axis of curve is to survey speed ratio in the experimentation among Fig. 5, and the longitudinal axis is an energy utilization efficiency.
The flow guide device working procedure of this horizontal axis tidal power generating water turbine is as follows:
This flow guide device and horizontal axis tidal power generating water turbine according to Fig. 1 position be fixed on the pile foundation, on the seat submarine platform or under the floating platform on sea, when trend is entered the mouth 1 place inflow flow guide device by flow guide device after, quicken through contraction section 2, strength of current increases gradually, the water turbine 6 that trend after quickening promotes flow guide device throat 3 places rotates, and water turbine 6 rotates the generator for electricity generation that drives in the motor room 9.Simultaneously, trend is when flowing through the flow guide device outside, oblique chimb by diffuser 4 and outlet 5 places, stream the formation whirlpool, there is whirlpool in the wake zone, forms pressure reduction, the flow guide device inner fluid is played certain pumping action in flow guide device inlet 1 and outlet 5 places, impeller 8 position flow velocitys in the flow guide device are increased, improve the startability and the capacity usage ratio of water turbine.
Claims (9)
1. the flow guide device of a horizontal axis tidal power generating water turbine, comprise inlet, contraction section with respect to the center line symmetric arrangement, throat, diffuser, outlet and coaming plate, it is characterized in that: inlet, contraction section, throat, diffuser and outlet longshore current sequential combination constitute internal face, and the hatching line equation of internal face is z=0.0066x
5-0.0524x
4+ 0.149x
3+ 0.0103x
2-0.5836x+2.9263, coaming plate one end is welded on and constitutes outer wall on the diffuser with outlet welding, the other end.
2. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 1 is characterized in that: comprise that also structural bead, structural bead are connected between internal face and the outer wall.
3. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 1 and 2 is characterized in that: receive expansion form in back before described internal face is, middle least radius place is a throat, inlet radius R
1, throat radius R
0, the outlet radius R
2Ratio be 1.2～1.3: 1: 1.6～1.8.
4. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 1 and 2 is characterized in that: the soldering point of coaming plate and diffuser is positioned at 0.85～0.95 double-length degree place of diffuser.
5. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 3 is characterized in that: the soldering point of coaming plate and diffuser is positioned at 0.85～0.95 double-length degree place of diffuser.
6. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 1 and 2 is characterized in that: throat is positioned at 0.4～0.45 double-length degree place, length L and throat radius R
0Ratio be 0.85～0.95.
7. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 3 is characterized in that: throat is positioned at 0.4～0.45 double-length degree place, length L and throat radius R
0Ratio be 0.85～0.95.
8. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 4 is characterized in that: throat is positioned at 0.4～0.45 double-length degree place, length L and throat radius R
0Ratio be 0.85～0.95.
9. the flow guide device of a kind of horizontal axis tidal power generating water turbine according to claim 5 is characterized in that: throat is positioned at 0.4～0.45 double-length degree place, length L and throat radius R
0Ratio be 0.85～0.95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105119235A CN101956641B (en) | 2010-10-19 | 2010-10-19 | Guiding device for horizontal-shaft tidal generation water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105119235A CN101956641B (en) | 2010-10-19 | 2010-10-19 | Guiding device for horizontal-shaft tidal generation water turbine |
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| Publication Number | Publication Date |
|---|---|
| CN101956641A true CN101956641A (en) | 2011-01-26 |
| CN101956641B CN101956641B (en) | 2012-07-11 |
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ID=43484189
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105119235A Expired - Fee Related CN101956641B (en) | 2010-10-19 | 2010-10-19 | Guiding device for horizontal-shaft tidal generation water turbine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168641A (en) * | 2011-04-22 | 2011-08-31 | 绍兴文理学院 | Ocean wave energy water turbine type engine |
| CN102418648A (en) * | 2011-12-20 | 2012-04-18 | 顾为东 | Water power generator |
| CN103742334A (en) * | 2013-12-27 | 2014-04-23 | 河海大学 | Through-flow water turbine with front and rear symmetrical constant-width movable guide blades |
| CN104502051A (en) * | 2014-12-23 | 2015-04-08 | 中誉远发国际建设集团有限公司 | Double-layer tube structure used for diffusion section of diffuser and manufacturing method for double-layer tube structure |
| CN105422362A (en) * | 2015-12-29 | 2016-03-23 | 天津大学前沿技术研究院有限公司 | Floating ocean current power generation current-accumulating device |
| CN105422361A (en) * | 2015-12-21 | 2016-03-23 | 浙江海洋学院 | Lifting type guiding and shielding device for tidal current energy |
| CN106103976A (en) * | 2014-12-01 | 2016-11-09 | 哈尔滨工程大学 | Door shape tidal current energy generating equipment carrier and seat bottom type tidal current energy generating equipment |
| CN106246459A (en) * | 2016-09-28 | 2016-12-21 | 华中科技大学 | A kind of wind energy conversion system ventilating duct |
| WO2020037464A1 (en) * | 2018-08-20 | 2020-02-27 | 唐山照澜海洋科技有限公司 | Gene regulatory network construction method based on ensemble feature importance and chicken swarm algorithm |
| CN114017250A (en) * | 2021-11-05 | 2022-02-08 | 西安交通大学 | Deep sea ocean current energy low-speed current-gathering supercharged hydraulic power generation system |
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| KR20010106598A (en) * | 2000-05-22 | 2001-12-07 | 김양중 | Generation of electric power using tide kinetic emergy |
| CN201068836Y (en) * | 2007-06-10 | 2008-06-04 | 邱霖生 | Drop height-free long vane column-shaped hydroturbine |
| CN201078308Y (en) * | 2007-08-29 | 2008-06-25 | 秦岭 | High-efficiency miniature wind-driven generator |
| CN101319648B (en) * | 2008-07-04 | 2010-07-28 | 清华大学 | Flow guiding device of vertical axis tidal current generator |
-
2010
- 2010-10-19 CN CN2010105119235A patent/CN101956641B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010106598A (en) * | 2000-05-22 | 2001-12-07 | 김양중 | Generation of electric power using tide kinetic emergy |
| CN201068836Y (en) * | 2007-06-10 | 2008-06-04 | 邱霖生 | Drop height-free long vane column-shaped hydroturbine |
| CN201078308Y (en) * | 2007-08-29 | 2008-06-25 | 秦岭 | High-efficiency miniature wind-driven generator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168641A (en) * | 2011-04-22 | 2011-08-31 | 绍兴文理学院 | Ocean wave energy water turbine type engine |
| CN102418648A (en) * | 2011-12-20 | 2012-04-18 | 顾为东 | Water power generator |
| CN103742334A (en) * | 2013-12-27 | 2014-04-23 | 河海大学 | Through-flow water turbine with front and rear symmetrical constant-width movable guide blades |
| CN103742334B (en) * | 2013-12-27 | 2016-02-03 | 河海大学 | A kind of tubular turbine with the symmetrical wide movable guide vane in front and back |
| CN106103976A (en) * | 2014-12-01 | 2016-11-09 | 哈尔滨工程大学 | Door shape tidal current energy generating equipment carrier and seat bottom type tidal current energy generating equipment |
| CN104502051A (en) * | 2014-12-23 | 2015-04-08 | 中誉远发国际建设集团有限公司 | Double-layer tube structure used for diffusion section of diffuser and manufacturing method for double-layer tube structure |
| CN104502051B (en) * | 2014-12-23 | 2017-06-16 | 中誉远发国际建设集团有限公司 | For the double-layer barrel structure and manufacture method of diffuser diffuser |
| CN105422361A (en) * | 2015-12-21 | 2016-03-23 | 浙江海洋学院 | Lifting type guiding and shielding device for tidal current energy |
| CN105422362A (en) * | 2015-12-29 | 2016-03-23 | 天津大学前沿技术研究院有限公司 | Floating ocean current power generation current-accumulating device |
| CN106246459A (en) * | 2016-09-28 | 2016-12-21 | 华中科技大学 | A kind of wind energy conversion system ventilating duct |
| WO2020037464A1 (en) * | 2018-08-20 | 2020-02-27 | 唐山照澜海洋科技有限公司 | Gene regulatory network construction method based on ensemble feature importance and chicken swarm algorithm |
| CN114017250A (en) * | 2021-11-05 | 2022-02-08 | 西安交通大学 | Deep sea ocean current energy low-speed current-gathering supercharged hydraulic power generation system |
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| CN101956641B (en) | 2012-07-11 |
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