CN102777314B - Tidal stream energy axial flow power generating device - Google Patents
Tidal stream energy axial flow power generating device Download PDFInfo
- Publication number
- CN102777314B CN102777314B CN201210218332.8A CN201210218332A CN102777314B CN 102777314 B CN102777314 B CN 102777314B CN 201210218332 A CN201210218332 A CN 201210218332A CN 102777314 B CN102777314 B CN 102777314B
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- China
- Prior art keywords
- generator
- scaffold
- impeller unit
- stand
- flow guide
- Prior art date
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- Expired - Fee Related
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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
-
- 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
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a tidal stream energy axial flow power generating device. The power generating device comprises an installation rack, an impeller device, a flow guiding device and a generator (4), wherein the installation rack is installed at the water bottom, the impeller device is connected with the installation rack in a rotating mode, the generator (4) is fixedly connected with the installation rack, the impeller device is connected with the generator (4), an outer gear ring (6) is arranged on the impeller device, an output shaft of the generator (4) is connected with a small gear (5) which meshes with the outer gear ring (6), and the gear number ratio of the outer gear ring (6) and the small gear (5) is (30-50):1. Then, even through an impeller is at a low rotating speed, high power output can be converted, and the working performance of tidal stream energy generators becomes better.
Description
Technical field
The present invention relates to marine tidal-current energy technical field, is specifically a kind of axial flow electricity generating device of marine tidal-current energy.
Background technique
The marine energy resources of China is very abundant, and island and periphery have abundant renewable marine energy resources, as marine tidal-current energy and wave energy etc.Marine tidal-current energy is the kinetic energy that the tide-generating force of the moon and the sun is formed when making seawater produce periodic reciprocating horizontal motion, concentrate on the water channel between bank, island or gulf mouth, marine tidal-current energy generating is then directly utilize the mechanical devices such as the water impact impeller of fluctuation tidewater to generate electricity.The marine tidal-current energy generator of prior art, the central shaft of impeller connects with the input shaft of generator.Therefore, there is following shortcoming in the marine tidal-current energy generator of prior art: because the rotational velocity of the central shaft of impeller is very low, needs to carry out speedup by multi-stage acceleration machine, then drive electrical generators generating then, but:
1) owing to adding booster engine, the corresponding structure that just makes becomes complicated, and therefore, parts are more, and reliability is poorer, wherein any one component failure, just can cause the inefficacy of whole generator;
2), simultaneously, after adding booster engine, because booster engine itself will consume the power of a part, therefore, the working efficiency of whole generator is reduced.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of good reliability, and the axial flow electricity generating device of the high marine tidal-current energy of working efficiency.
For solving the problems of the technologies described above, the axial flow electricity generating device of marine tidal-current energy provided by the invention, comprise scaffold, impeller unit, flow guide device and generator, described scaffold is arranged on the bottom, impeller unit is rotatably connected on scaffold, generator is fixedly connected on scaffold, and impeller unit is connected with generator.Described impeller unit is provided with external toothing, the output shaft of generator is connected with the small gear engaged with external toothing, and the gear ratio of external toothing and small gear is 30 ~ 50:1.Described impeller unit comprises wheel hub, vane group and hollow shaft, and one end of vane group is connected with hollow shaft, and the other end is connected with wheel hub; Described external toothing is positioned on the outer circle wall of wheel hub.Described impeller unit and scaffold are rotationally connected and refer to, stand is along the circumferential direction evenly provided with and organizes limit stoper more, often organize limit stoper and comprise connecting plate, back shaft, guide wheel and bearing, one end of described connecting plate is connected with stand, the middle part of the other end and back shaft is socketed, the two ends of back shaft are rotatably connected to guide wheel each via bearing respectively, described each guide wheel all has flange on the circumferential surface at edge in the outer part, and two end faces of described wheel hub are connected in the flange on two guide wheels.Described flow guide device comprises outer flow guide sleeve and Inner guide cover, described outer flow guide sleeve is two, lay respectively at the both sides of stand, each outer flow guide sleeve is to the bell mouth shape extended out from inside to outside, the outer wall of each outer flow guide sleeve is along the circumferential direction connected with multiple link plate, the quantity of link plate is consistent with the quantity of limit stoper, and multiple link plate is connected to same one end of the back shaft in many group limit stoper; Described Inner guide cover is two, lays respectively at the two ends of hollow shaft, and the shape of each Inner guide cover in sub warhead, wherein sharp one outwardly, and other end is fixedly connected on the end of hollow shaft.Described scaffold comprises stand, four fixing columns and two cross bars, and the two ends of every root cross bar connect two fixing columns respectively, and four fixing columns are arranged on the bottom, and stand is arranged on two cross bars.
The optimal number of described limit stoper is three groups.
After adopting above structure, the present invention compared with prior art, has the following advantages:
1) because the gear ratio of the small gear on the external toothing in impeller unit and generator input shaft is 30 ~ 50:1, this large gear ratio makes the ratio of the rotating speed of impeller and the rotating speed of generator input shaft be 1:30 ~ 50, in other words, wheel hub revolves and turns around, small gear can be made to rotate 30 ~ 50 circles, like this, the input shaft of generator can be equivalent to the rotating speed rotation of 30 ~ 50 times, impeller, greatly improve the electric energy output of generator, therefore, even if in the slow-revving situation of impeller, also can convert higher electric energy to export, make the service behaviour of marine tidal-current energy generator better,
2) in addition, the wheel hub of impeller unit spacing and be rotationally connected with stand by organizing limit stoper more, and structure is simple, and hub rotation is flexible;
3) be all connected to outer flow guide sleeve in the both sides of scaffold, like this, even if there is little departing from the direction of trend, also can produce the driving force of rotating to impeller; Simultaneously, Inner guide cover in bullet shape has all been installed at the two ends of hollow shaft, make the partially peripherad region of guiding function that the trend of originally passing from the hollow position of hollow shaft is overlapped by Inner guide, thus add the flow velocity of the trend to impeller place, make the generating efficiency of this device higher;
4) outer flow guide sleeve is designed to be to the bell-mouthed shape extended out from inside to outside, is that the flow velocity in order to make current enter impeller unit increases, also makes the generating efficiency of this device higher.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the axial flow electricity generating device of marine tidal-current energy of the present invention.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 be in Fig. 2 A to structural representation.
Fig. 4 is the perspective view of the present invention local.
Wherein: 1, fixing column; 2, cross bar; 3, stand; 4, generator; 5, small gear; 6, external toothing; 7, wheel hub; 8, vane group; 9, Inner guide cover; 10, hollow shaft; 11, outer flow guide sleeve; 12, flange; 13, link plate; 14, bearing; 15, guide wheel; 16, connecting plate; 17, back shaft.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
From the structural representation of the axial flow electricity generating device of the marine tidal-current energy of the present invention shown in Fig. 1 ~ Fig. 4, it comprises scaffold, impeller unit, flow guide device and generator 4, described scaffold is arranged on the bottom, impeller unit is rotatably connected on scaffold, generator 4 is fixedly connected on scaffold, and impeller unit is connected with generator 4.Described impeller unit is provided with external toothing 6, the output shaft of generator 4 is connected with the small gear 5 engaged with external toothing 6, and external toothing 6 is 30 ~ 50:1 with the gear ratio of small gear 5.
Described scaffold comprises stand 3, four fixing columns 1 and two cross bars 2, and the two ends of every root cross bar 2 connect two fixing columns, 1, four fixing columns 1 respectively and are arranged on the bottom, and stand 3 is arranged on two cross bars 2.
Described impeller unit comprises wheel hub 7, vane group 8 and hollow shaft 10, and one end of vane group 8 is connected with hollow shaft 10, and the other end is connected with wheel hub 7; Described external toothing 6 is positioned on the outer circle wall of wheel hub 7.
Described impeller unit and scaffold are rotationally connected and refer to, stand 3 is along the circumferential direction evenly provided with and organizes limit stoper more, often organize limit stoper and comprise connecting plate 16, back shaft 17, guide wheel 15 and bearing 14, one end of described connecting plate 16 is connected with stand 3, the middle part of the other end and back shaft 17 is socketed, the two ends of back shaft 17 are rotatably connected to guide wheel 15 each via bearing 14 respectively, described each guide wheel 15 all has flange 12 on the circumferential surface at edge in the outer part, and two end faces of described wheel hub 7 are connected in the flange 12 on two guide wheels 15.In the present embodiment, the quantity of described limit stoper is three groups.
Described flow guide device comprises outer flow guide sleeve 11 and Inner guide cover 9, described outer flow guide sleeve 11 is two, lay respectively at the both sides of stand 3, each outer flow guide sleeve 11 is to the bell mouth shape extended out from inside to outside, the outer wall of each outer flow guide sleeve 11 is along the circumferential direction connected with multiple link plate 13, the quantity of link plate 13 is consistent with the quantity of limit stoper, and multiple link plate 13 is connected to same one end of the back shaft 17 in many group limit stoper.Described Inner guide cover 9 is two, lays respectively at the two ends of hollow shaft 10, and the shape of each Inner guide cover 9 in sub warhead, wherein sharp one outwardly, and other end is fixedly connected on the end of hollow shaft 10.
Working principle of the present invention is as follows: when current in the typhon mouth of outer flow guide sleeve 11 and Inner guide cover 9 sub warhead outflow fashionable, vane group 8 is driven to rotate, wheel hub 7 in impeller unit is also rotated thereupon, now, under external toothing 6 outside wheel hub 7 and the engagement of small gear 5, the input shaft of generator 4 is rotated, thus makes generator 4 generation current.
The present invention is not limited to above-described structure, and wherein, the fixing column in scaffold and the quantity of cross bar also can be other, as also installed fixing column to play an effect supported in the centre of every root cross bar; In addition, also can be connected by connecting rod between two cross bars, like this, more can increase the steadiness of underframe in scaffold; In addition, limit stoper also can be four groups, five groups or more.
These changes all fall within protection scope of the present invention above.
Claims (2)
1. the axial flow electricity generating device of a marine tidal-current energy, comprise scaffold, impeller unit, flow guide device and generator (4), described scaffold is arranged on the bottom, impeller unit is rotatably connected on scaffold, generator (4) is fixedly connected on scaffold, impeller unit is connected with generator (4), it is characterized in that: described impeller unit is provided with external toothing (6), the output shaft of generator (4) is connected with the small gear (5) engaged with external toothing (6), external toothing (6) is 30 ~ 50:1 with the gear ratio of small gear (5), described impeller unit comprises wheel hub (7), vane group (8) and hollow shaft (10), and one end of vane group (8) is connected with hollow shaft (10), and the other end is connected with wheel hub (7), described external toothing (6) is positioned on the outer circle wall of wheel hub (7), described impeller unit and scaffold are rotationally connected and refer to, stand (3) is along the circumferential direction evenly provided with and organizes limit stoper more, often organize limit stoper and comprise connecting plate (16), back shaft (17), guide wheel (15) and bearing (14), one end of described connecting plate (16) is connected with stand (3), the middle part of the other end and back shaft (17) is socketed, the two ends of back shaft (17) are rotatably connected to guide wheel (15) each via bearing (14) respectively, described each guide wheel (15) all has flange (12) on the circumferential surface at edge in the outer part, two end faces of described wheel hub (7) are connected in the flange (12) on two guide wheels (15), described flow guide device comprises outer flow guide sleeve (11) and Inner guide cover (9), described outer flow guide sleeve (11) is two, lay respectively at the both sides of stand (3), each outer flow guide sleeve (11) is to the bell mouth shape extended out from inside to outside, the outer wall of each outer flow guide sleeve (11) is along the circumferential direction connected with multiple link plate (13), the quantity of link plate (13) is consistent with the quantity of limit stoper, and multiple link plate (13) is connected to same one end of the back shaft (17) in many group limit stoper, described Inner guide cover (9) is two, lay respectively at the two ends of hollow shaft (10), the shape of each Inner guide cover (9) in sub warhead, wherein sharp one is outwardly, and other end is fixedly connected on the end of hollow shaft (10), described scaffold comprises stand (3), four fixing columns (1) and two cross bars (2), the two ends of every root cross bar (2) connect two fixing columns (1) respectively, four fixing columns (1) are arranged on the bottom, and stand (3) is arranged on two cross bars (2).
2. the axial flow electricity generating device of marine tidal-current energy according to claim 1, is characterized in that: the quantity of described limit stoper is three groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218332.8A CN102777314B (en) | 2012-06-26 | 2012-06-26 | Tidal stream energy axial flow power generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218332.8A CN102777314B (en) | 2012-06-26 | 2012-06-26 | Tidal stream energy axial flow power generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777314A CN102777314A (en) | 2012-11-14 |
| CN102777314B true CN102777314B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210218332.8A Expired - Fee Related CN102777314B (en) | 2012-06-26 | 2012-06-26 | Tidal stream energy axial flow power generating device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460769A (en) * | 2015-03-17 | 2017-02-22 | 马克涡轮机私人有限公司 | Rotor for electricity generator |
| CN106917716A (en) * | 2017-03-27 | 2017-07-04 | 张语 | A kind of external automatic control electricity generation system of undercurrent type |
| CN107013399B (en) * | 2017-05-26 | 2020-08-18 | 西安理工大学 | Fixed-blade tubular turbine adopting gear transmission |
| CN107829874B (en) * | 2017-09-26 | 2019-11-05 | 河海大学 | A kind of hydraulic turbine based on the power generation of combined type multistage marine tidal-current energy |
| CN109505722B (en) * | 2017-10-24 | 2020-10-09 | 龙滩水电开发有限公司龙滩水力发电厂 | Bucket type hydroelectric power generation with membrane structure |
| CN109356781A (en) * | 2018-11-27 | 2019-02-19 | 大连理工大学 | A kind of shaftless horizontal change drift angle marine tidal-current energy device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2002328217B2 (en) * | 2001-09-17 | 2005-09-22 | Clean Current Limited Partnership | Underwater ducted turbine |
| JP2008144469A (en) * | 2006-12-11 | 2008-06-26 | Marsima Aqua System Corp | Stray fish entrance preventing device |
| CN101235802B (en) * | 2007-11-29 | 2010-06-02 | 黄金伦 | Low speed wind wheel generation device |
| WO2010043136A1 (en) * | 2008-10-15 | 2010-04-22 | Dong Yuquan | Wind generator |
| EP2199601B1 (en) * | 2008-12-18 | 2013-11-06 | OpenHydro IP Limited | A method of deployment of hydroelectric turbine with aligning means |
| WO2010074670A1 (en) * | 2008-12-22 | 2010-07-01 | Anthony Branco | Fluid turbine for generating electricity |
| CN102384019B (en) * | 2011-10-11 | 2013-04-10 | 大连理工大学 | Nested tidal current generating set of air guide sleeve paddle-changing horizontal shaft |
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- 2012-06-26 CN CN201210218332.8A patent/CN102777314B/en not_active Expired - Fee Related
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