CN105736220B - A kind of power generation device from sea current of single impeller symmetric form big L/D ratio - Google Patents
A kind of power generation device from sea current of single impeller symmetric form big L/D ratio Download PDFInfo
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- CN105736220B CN105736220B CN201610145927.3A CN201610145927A CN105736220B CN 105736220 B CN105736220 B CN 105736220B CN 201610145927 A CN201610145927 A CN 201610145927A CN 105736220 B CN105736220 B CN 105736220B
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- impeller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
Abstract
The invention discloses a kind of power generation device from sea current of single impeller symmetric form big L/D ratio.Device uses the symmetrical structure of single impeller, the both ends of impeller hub are respectively provided with a set of transmission and electricity generation system, transmission is mainly made of kuppe and the generator in kuppe and uni-drive gear box with electricity generation system, two sets of transmissions are symmetrical with the impeller hub with electricity generation system, impeller hub is connect through main shaft with uni-drive gear box, uni-drive gear box output end is connect with generator, and circumferential surface is equipped with impeller blade；Two sets of transmissions connect grid-connected or load device with the output cord of the generator of electricity generation system through electrical Differential Output device in parallel.Present invention optimizes two-way flow field characteristics, realize power dividing, effectively reduce under same power to being driven the specification performance requirement with electricity generation system, reduce design and manufacture cost；And the force-bearing situation for effectively improving trunnion axis power generation device from sea current, to improve stability and the service life of operation.
Description
Technical field
The invention belongs to field of new energy generation, have been specifically related to a kind of ocean current hair of single impeller symmetric form big L/D ratio
Electric installation.
Background technology
The problem of in the 21st century, tradition fossil resources are increasingly exhausted, energy crisis, environmental pollution occurs, and promotes people
Research emphasis is put into new energy development and utilizes field.Energy by ocean current is as a kind of clean reproducible energy, with reserves
Greatly, distribution is wide, periodically by force and the advantages that energy density is big, increasingly as an emphasis of new energy technology research and development.
Ocean current energy generator study application field, have it is traditional build a dam using tidal power generation, also have vertical axis energy by ocean current power generation dress
Set, from cost with from the point of view of energy capture efficiency, be similar to wind turbine trunnion axis blade capture power generator it is with good performance.
Trunnion axis power generation device from sea current was at home and abroad quickly grown in recent years, is mainly had Britain in international coverage, the U.S., is added
It puts on airs, Japan and other countries are engaged in the research of ocean current generation technology.The ocean current resource relative abundance of China, starting is more early, nearly ten years
Develop a kind of " half straight drive " trunnion axis power generator.Such as Chinese patent《A kind of low-speed half direct-driven marine current energy power generation》,
Publication number CN102345550A discloses a kind of power generation device from sea current similar to horizontal axis wind-driven generator, it is efficient with it
Trunnion axis and fuselage radial dimension are smaller (relatively straight drive), and gear-box raising speed ratio and motor speed are all relatively low, therefore complete machine
The more a height of technical characteristic of efficiency and reliability represents the type of a kind of ocean current energy generator at present.But as ocean current generates electricity
Unit enlargement, there is certain defects for structure.The density of seawater is more than 1,000 times of air, and compressibility is small, energy
Density is big, to improve energy capture rate and impeller reliability, then not requiring nothing more than power generation device from sea current complete machine has good stream
Line style configuration design and flow Field Design will also reduce the radial dimension of fuselage to reduce invalid and harmful obstructing surface as far as possible
Product.Especially when the power of the assembling unit rises to megawatt rank, the particularly radial size of volume of power generator certainly will increase, and generate
Baffle and flow field characteristic problem tend to be serious, cause the load impacting that blade is subject to increase, blade easily occur and wave and shake
Pendulum problem, or even there is a situation where bend or fracture.Meanwhile unit rises to high power levels, to transmission chain (gear-box), hair
The power capacity of motor requires also to greatly improve, and cost is caused to improve.How the crux of this problem is actually in the machine of holding
Reduce radial dimension and invalid water blocking area as far as possible under the premise of assembling acc power is constant.
Invention content
To exist when solving the problems, such as above-mentioned typical half straight drive trunnion axis power generation device from sea current enlargement, the present invention is to provide
A kind of power generation device from sea current of single impeller symmetric form big L/D ratio, proposes and has developed a kind of trunnion axis power generation device from sea current to exist
The optimization design concept or method that " big L/D ratio " long and narrow type is realized under the conditions of Same Efficieney, using single impeller symmetric form knot
Structure has two sets of transmissions and electricity generation system.
The present invention adopts the following technical scheme that as follows：
Described device use single impeller symmetrical structure, including kuppe, generator, uni-drive gear box, impeller hub,
Main shaft, impeller blade, electrical Differential Output device in parallel, the both ends of impeller hub are respectively provided with a set of transmission and electricity generation system, pass
It is dynamic to be mainly made of kuppe and the generator in kuppe and uni-drive gear box with electricity generation system, two sets of transmissions and power generation
System is symmetrical with the impeller hub, and impeller hub is connected through main shaft and the uni-drive gear box of both sides, and uni-drive gear box is defeated
Outlet is connect with generator, and the circumferential surface of impeller hub is equipped with multiple impeller blades；Two sets of transmissions and the generator of electricity generation system
Output cord is connect with the input terminal of the electrical Differential Output device in parallel, adjusting and converting by electricity, by the electricity
Gas parallel connection Differential Output device output end is connected to grid-connected or load device, realizes the supply of electric energy.
The impeller hub and two sets of transmissions use common shaft or respective spindle jacket wheel hub mode with electricity generation system.One
Kind mode is that two sets of transmissions share same main shaft with electricity generation system, and main shaft coaxially passes through impeller hub.Another way is
Two sets of transmissions use respective main shaft, spindle nose to be fixedly and coaxially connected impeller hub with electricity generation system.
The quantity of the impeller blade is unlimited, such as 2-6 blade, and impeller blade uses the vane propeller-changing or two-way of single group
Blade determines paddle.
Further, the impeller blade is circumferentially uniformly installed on the impeller hub.
Apparatus of the present invention can significantly be more than the existing similar dress of tradition along the axial length of main shaft with kuppe diameter ratio
" draw ratio " parameter set, is at least mentioned more than one times.
The kuppe is wrapped in outside the generator, main shaft and uni-drive gear box of every set transmission and electricity generation system.It is described
Main shaft other end is fixedly connected with the uni-drive gear box input shaft, and the uni-drive gear box output shaft and the generator are defeated
Enter end to be fixedly connected.
The present invention has following advantageous effect：
1, the present invention uses single impeller symmetrical structure, relatively traditional equal-wattage unit to extend the " long of power generator
Diameter ratio ", reduces the area of section of fuselage, to reduce baffle effect, improves overall efficiency and same place resource utilizes
Rate optimizes power generator flow Field Design and its hydrodynamic characteristic, and realizes input mechanical output shunting, not only reduces
The power and size of the uni-drive gear box and the generator, also reduces the cost of design and manufacture.
2, the present invention is designed using symmetric form, and the impeller hub and the impeller blade are positioned in power generator
Between, traditional cantilever design is changed, the supporting point of unit rotary electrification shafting is also increased, makes the impeller hub by more
Balanced support force, also balances the axial direction and radial force of the main shaft and complete machine, to reduce force unbalance and sea
Impact and vibration caused by stream loading fluctuation, increase power generator running stability.It is sent out compared to traditional trunnion axis ocean current
Electric installation, wheel hub space relative loose can increase flexibility, the reliability of the design of variable pitch dynamic sealing.In addition, rotary blade is set
Among power generator, the overall package being convenient in assembling process significantly reduces main shaft exposed parts, is effectively prevented fortune
Foreign matter winding during row, improves the self-protection ability of power generator.
Description of the drawings
Fig. 1 is the structural schematic diagram of apparatus of the present invention；
Fig. 2 is the side view of Fig. 1 structures；
Fig. 3 is the blade impeller embodiment of apparatus of the present invention.
In figure：Kuppe 1, generator 2, uni-drive gear box 3, impeller hub 4, main shaft 5, impeller blade 6, electrical parallel connection are flat
Weigh output device 7.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
Referring to Fig.1, device includes kuppe 1, generator 2, uni-drive gear box 3, impeller hub 4, main shaft 5, impeller blade
6, electrical Differential Output device 7 in parallel.It is symmetrical with 4 center line of the impeller hub, both sides are respectively arranged using symmetrical structure
The uni-drive gear box 3, the generator 2 and the kuppe 1.
Relatively traditional single-side structural, the symmetrical structure can utilize existing two sets of same devices to carry power and " draw ratio "
High about 1 times (blade accordingly increases), effectively reduces invalid baffle area, optimizes two-way flow field characteristic, and effective real
Power dividing is showed, specification performance and power requirement to the uni-drive gear box 3 and the generator 2 has been reduced, to drop
The cost of low design and manufacture.And the axial support force of the balanced impeller hub 4, also balance the main shaft 5 with it is whole
Axial force suffered by machine.Also, impeller, which is arranged among complete machine, reduces main shaft exposed parts, is effectively prevented operational process
In foreign matter winding.
With reference to Fig. 2, using trilobal formula, 6 quantity of impeller blade is uniformly distributed three, using the vane propeller-changing of single group
Convective generator structure, circumferentially uniformly installation impeller blade 6,6 pitch of impeller blade can adjust according to demand on impeller hub 4.
Impeller hub 4 is fixedly connected with 5 one end of main shaft, using common shaft mode, 5 other end of main shaft and transmission gear
3 input shaft of case is fixedly connected, and 3 output shaft of uni-drive gear box is fixedly connected with 2 input terminal of the generator.Kuppe 1 is pacified respectively
Mounted in the rear and front end of power generator, it acts as the flow field of optimization power generator is streamlined.
The structure of the present invention changes traditional cantilever design, effectively improves trunnion axis power generation device from sea current under same power
Force-bearing situation, to improve its operation stability and the service life.
The output cord of former and later two generators 2 is connect with the input terminal of the electrical Differential Output device 7 in parallel,
Electrical 7 output end of Differential Output device in parallel is connected to grid-connected or load device by adjusting and converting by electricity, real
The supply of existing electric energy.
Embodiment 2
It is a kind of special circumstances of embodiment 1 with reference to Fig. 3,6 number of blade of the impeller blade is 2, this situation is convenient for impeller
The transport in batch of blade and lifting.
Embodiment 3
It is substantially the same manner as Example 1, except that：Intermediate wheel hub determines paddle mode using bidirectional blade, to protect
Under the premise of demonstrate,proving bi-directional current power generation, mechanism is simplified, cost has been saved.
Embodiment 4
It is substantially the same manner as Example 1, except that：Two sets of transmissions and the electricity generation system implemented use respective main shaft,
Spindle nose is fixedly and coaxially connected the end face center of impeller hub.
By implement above as it can be seen that apparatus of the present invention have single impeller, two sets of transmission mechanism, two generators, using pair
Claim arrangement, impeller be placed among power generation device from sea current, be conducive to axially loaded balance, realizes input mechanical output shunting,
Under Same Efficieney, the manufacture to transmission chain and generator, installation requirement are significantly reduced, cost is reduced.
Also, the present invention realizes the maximum draw ratio under Same Efficieney constraint, is optimized to complete machine, proposes
Trunnion axis " big L/D ratio sleeve configuration " ocean current generator group new structure effectively reduces invalid water blocking area, improves unit stream
Field characteristic improves overall efficiency, and cooperation realizes way traffic with blade pitch device, and obtaining efficient catch can generating effect.
The above is only a preferred embodiment of the present invention, any extension or improvement based on the principle of the invention regard
For protection scope of the present invention.
Claims (5)
1. a kind of power generation device from sea current of single impeller symmetric form big L/D ratio, it is characterised in that：Described device is using single impeller
Symmetrical structure, including kuppe (1), generator (2), uni-drive gear box (3), impeller hub (4), main shaft (5), impeller blade
(6), electrical in parallel Differential Output device (7), the both ends of impeller hub (4) are respectively provided with a set of transmission and electricity generation system, transmission with
Mainly the generator (2) by kuppe (1) and in kuppe (1) and uni-drive gear box (3) are constituted electricity generation system, two sets of biographies
Move, impeller hub (4) uni-drive gear box through main shaft (5) and both sides symmetrical with the impeller hub (4) with electricity generation system
(3) it connects, uni-drive gear box (3) output end is connect with generator (2), and the circumferential surface of impeller hub (4) is equipped with multiple impeller blades
(6)；Two sets of transmissions are connect with the generator (2) of electricity generation system with electrical Differential Output device (7) in parallel, by adjusting for electricity
With transformation, electrical parallel connection Differential Output device (7) output end is connected to grid-connected or load device；
The impeller hub (4) uses common shaft or respective spindle jacket wheel hub mode with two sets of transmissions with electricity generation system.
2. a kind of power generation device from sea current of single impeller symmetric form big L/D ratio according to claim 1, it is characterised in that：Institute
It states two sets of transmissions and shares same main shaft with electricity generation system, main shaft coaxially passes through impeller hub (4).
3. a kind of power generation device from sea current of single impeller symmetric form big L/D ratio according to claim 1, it is characterised in that：Institute
State two sets of transmissions uses respective main shaft, spindle nose to be fixedly and coaxially connected impeller hub (4) with electricity generation system.
4. a kind of power generation device from sea current of single impeller symmetric form big L/D ratio according to claim 1, it is characterised in that：Institute
The impeller blade (6) stated determines paddle using the vane propeller-changing or bidirectional blade of single group.
5. a kind of power generation device from sea current of single impeller symmetric form big L/D ratio according to claim 1, it is characterised in that：Institute
State generator (2), main shaft (5) and uni-drive gear box (3) outside that kuppe (1) is wrapped in every set transmission and electricity generation system, institute
Main shaft (5) other end is stated to be fixedly connected with the uni-drive gear box (3) input shaft, uni-drive gear box (3) output shaft with
Generator (2) input terminal is fixedly connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145927.3A CN105736220B (en) | 2016-03-15 | 2016-03-15 | A kind of power generation device from sea current of single impeller symmetric form big L/D ratio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145927.3A CN105736220B (en) | 2016-03-15 | 2016-03-15 | A kind of power generation device from sea current of single impeller symmetric form big L/D ratio |
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| Publication Number | Publication Date |
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| CN105736220A CN105736220A (en) | 2016-07-06 |
| CN105736220B true CN105736220B (en) | 2018-09-21 |
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| CN106907288A (en) * | 2017-03-14 | 2017-06-30 | 浙江大学 | The symmetrical direct-drive type ocean current generator group of big L/D ratio |
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| SU1208298A1 (en) * | 1984-08-10 | 1986-01-30 | Башкирский Ордена Трудового Красного Знамени Сельскохозяйственный Институт | Wave power plant |
| CN1717543A (en) * | 2002-11-28 | 2006-01-04 | 船舶通用涡轮有限公司 | Supporting structures for water current (including tidal stream) turbines |
| CN201546880U (en) * | 2009-06-05 | 2010-08-11 | 罗东虎 | Urban and rural draining water flow power station |
| CN102889162A (en) * | 2011-07-21 | 2013-01-23 | 刘华栋 | Permanent magnet semi-direct-drive type tidal power generation device |
| CN203362396U (en) * | 2013-06-30 | 2013-12-25 | 胡国贤 | Double-transmission single-fan-blade wind-driven generator |
| CN103511171A (en) * | 2013-10-10 | 2014-01-15 | 浙江大学 | Tidal current energy electricity generation device and control method thereof |
| CN204805030U (en) * | 2015-06-01 | 2015-11-25 | 深圳市绿电康科技有限公司 | Dual drive wind power generation set |
-
2016
- 2016-03-15 CN CN201610145927.3A patent/CN105736220B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1208298A1 (en) * | 1984-08-10 | 1986-01-30 | Башкирский Ордена Трудового Красного Знамени Сельскохозяйственный Институт | Wave power plant |
| CN1717543A (en) * | 2002-11-28 | 2006-01-04 | 船舶通用涡轮有限公司 | Supporting structures for water current (including tidal stream) turbines |
| CN201546880U (en) * | 2009-06-05 | 2010-08-11 | 罗东虎 | Urban and rural draining water flow power station |
| CN102889162A (en) * | 2011-07-21 | 2013-01-23 | 刘华栋 | Permanent magnet semi-direct-drive type tidal power generation device |
| CN203362396U (en) * | 2013-06-30 | 2013-12-25 | 胡国贤 | Double-transmission single-fan-blade wind-driven generator |
| CN103511171A (en) * | 2013-10-10 | 2014-01-15 | 浙江大学 | Tidal current energy electricity generation device and control method thereof |
| CN204805030U (en) * | 2015-06-01 | 2015-11-25 | 深圳市绿电康科技有限公司 | Dual drive wind power generation set |
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