CN104791178A - Flowing water power generation device achieving automatic pitch varying and pitch varying method thereof - Google Patents
Flowing water power generation device achieving automatic pitch varying and pitch varying method thereof Download PDFInfo
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- CN104791178A CN104791178A CN201510179356.0A CN201510179356A CN104791178A CN 104791178 A CN104791178 A CN 104791178A CN 201510179356 A CN201510179356 A CN 201510179356A CN 104791178 A CN104791178 A CN 104791178A
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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
Abstract
The invention discloses a flowing water power generation device achieving automatic pitch varying and belongs to the field of hydroelectric generation technologies. The power generation device comprises floating platforms, generators and anchoring devices. The floating platforms can float on the water surface, the generators are arranged on the floating platforms, and the anchoring devices are used for fixing the floating platforms. Flowing water channels which are through in the front and back direction are formed in the lower portions of the floating platforms, belt wheels are arranged inside the flowing water channels and can rotate in the longitudinal direction of the flowing water channels, and rotating shafts of the belt wheels are connected with rotating shafts of the generators through transmission mechanisms. The flowing water power generation device further comprises a set of blades movably connected with the outer rings of the belt wheels and a set of limiting mechanisms corresponding to the blades one by one. The limiting mechanisms can make the blades corresponding to the limiting mechanisms be in a working state, and make the blades corresponding to the limiting mechanisms be in a non-working state, wherein the blades in the working state and the flowing water direction form an included angle below the belt wheels, the blades in the non-working state and the flowing water direction are parallel basically above the belt wheels, and the length of the blades can be actively adjusted. The invention further discloses a pitch varying method of the power generation device. The power generation device is simple in structure, high in energy conversion efficiency and wide in application range.
Description
Technical field
The present invention relates to a kind of hydroelectric installation, particularly relate to a kind of flowing water power generation device of automatic change oar and become oar method, belonging to technical field of hydroelectric generation.
Background technique
Modern society's energy shortage and environmental pollution are more and more serious, and countries in the world all replace coal and oil in searching novel renewable energy.The new energy being representative with wind energy, solar energy at present enter the practical stage, but because their energy per unit area density is low, investment large, the electric energy of acquisition can not be competed mutually with thermoelectricity, water power valency, makes it promote and be restricted.
Water can be a kind of green regenerative energy sources, and China's water resource enriches, and will produce huge social economic benefit if used by water resource.But the water generating in river all adopts dam type to generate electricity at present: i.e. high-order dam retaining, is concentrated by water, then install hydraulic turbine generator at the low level of dam, utilize water drop pelton wheel, drive electrical generators generates electricity.First dam type generating needs addressing, although rivers are a lot, the location being applicable to building dam is few.Build a dam again and generally all will block river, inevitably the ecotope of broken ring locality, and cost is also very large.In addition for the river water energy of plains region, because barrage builds a dam investment too greatly, affect wide, almost cannot develop, Delta of Pearl River as abundant in water resource and Yangtze River Delta Region are exactly like this.Waste water resource like this.The south water to north water transfer line of thousands of kilometers, China also has countless " low water head large discharge ", and drop channel, because head its flow energy low also cannot be used.
Secondly, accumulation of energy pump station of existing high dam water generating factory, the flowing water with certain water-head also has suitable energy by the tail water of discharging after water turbine equipment, and current this flow energy is not utilized again, not only wastes but also also brings very large harm to underwater bed.In addition, the Thermal Power Station accounting for national 80% generated energy needs a large amount of electric power cooling water in power production process, cooling procedure terminates the rear this water being called as " warm water discharge " will directly discharged to large rivers sea, and the water yield scope of gigawatt thermal power steam turbine " warm water discharge " is probably 35-45 cubic meters per second, if be enough used, carry out secondary electricity generation, generating efficiency will be improved further and reduce energy consumption.But " warm water discharge " that Thermal Power Station national at present, nuclear plant discharge year after year is all in the state of wasting.In addition, equally also there is such water resource waste phenomenon in sewage treatment works, large chemical complex and other industrial water rich and influential family.If these waterpower resourses secondaries can be utilized generating, cost of electricity-generating will be saved further, improve resource utilization.
Simultaneously, China's ocean current resource is also very abundant, but current power generation with sea water mainly utilizes tidal energy and wave-energy power generation, wherein the tidal power generation of technology maturation also needs to build a dam and blocks tide, builds power station, again because stopping when opening when the tide is flowing and ebbing, generator set, electric power exports unstable, and power station generating efficiency is low.Wave-energy power generation and marine tidal-current energy generating are also among research at present, relative wave energy, and marine tidal-current energy change is steadily, regular strong, and rich reserves, only the theoretical average power of China coast is just up to 13.9 ten thousand MW.At present, the obstacle of marine tidal-current energy generating is mainly that cost of electricity-generating is high, and cost of electricity-generating is high comes from cost and operating cost is high, generated energy causes less; The reason that cost is high is due to technical problem, does not form batch production at present.
Therefore, in order to make full use of the current of rivers, the marine tidal-current energy water resource of ocean, improve the generating efficiency of existing power station and natural flow station and improve the resource utilization of the large enterprise of water displacement, recycle the energy of flowing water in human lives's activity in production, be necessary very much that research is a kind of efficient, technically reliable, with low cost, the device of all fluid energy generatings can be suitable for.
Summary of the invention
Technical problem to be solved by this invention is to overcome prior art deficiency, provides a kind of flowing water power generation device of automatic change oar, structure is simple, energy conversion efficiency is high, applied widely advantage that it has.
The present invention specifically solves the problems of the technologies described above by the following technical solutions:
A flowing water power generation device for automatic change oar, comprises the floating platform that may float on the water surface, the generator be arranged on floating platform, and for fixing the anchor of described floating platform; Pipelined channel through before and after described floating platform bottom is provided with, in described pipelined channel, be provided with the belt wheel that can rotate along the longitudinal direction of pipelined channel, the rotating shaft of described belt wheel is connected by the rotating shaft of driving mechanism with described generator; Described flowing water power generation device also comprise one group of blade be flexibly connected with the outer ring of described belt wheel and with each blade one group of position-limit mechanism one to one, described position-limit mechanism can make the blade corresponding to it below belt wheel, be in the working state had angle with water (flow) direction, and above belt wheel, be in the off working state substantially parallel with water (flow) direction; Described blade comprises length-adjustable loom, is arranged at the blade of loom end, and the node control unit that the driving mechanism that can regulate loom length is connected with driving mechanism signal; Described flowing water power generation device also comprises the sensing device that can detect the water velocity at different water depth place, and can carry out the main control unit of information interaction with described sensing device and each node control unit.
In technique scheme, water jet propulsion blade makes belt wheel rotate, and drive electrical generators generates electricity, thus flow energy is converted to electric energy, and blade enters after in water, under the acting in conjunction of gravity and position-limit mechanism, it is in the working state opened, and effectively can carry out transformation of energy; And after leaving water, blade is in the off working state substantially parallel with water (flow) direction, the resistance that air-flow produces can be effectively reduced, thus effectively improve energy conversion efficiency and reduce the installing space needed for belt wheel.The speed of river waterflow and the flow velocity of sea tide may be different at different depth place, for ensureing that blade all can obtain maximum thrust under all kinds of Environmental Conditions, thus improve energy conversion efficiency and expand adaptability, lodicule adjustable length of the present invention, and according to the water velocity at different water depth place, lodicule length is regulated, make lodicule obtain thrust large as far as possible.
A change oar method for above-mentioned flowing water power generation device, comprises the following steps:
Step 1, main control unit are according to by the maximum depth of water scope of described sensing device determination water velocity;
Step 2, main control unit are adjusted by the loom length of each node control unit to each blade, and when each blade is positioned at below belt wheel, its blade is in the maximum depth of water scope of water velocity.
Further, when main control unit is adjusted by the loom length of each node control unit to each blade, while its blade is in the maximum depth of water scope of water velocity when making each blade be positioned at below belt wheel, the blade height of any two the adjacent blades along water (flow) direction is also made to there is height difference.
Compared to existing technology, the present invention has following beneficial effect:
1, electricity generating device proposed by the invention, structure is simple, and lodicule has multiple automatic change slurry function, and the first can close on the water surface, and blade is substantially parallel with the water surface; When being positioned under the water surface, blade gravitate Automatic-expanding, by the effect of position-limit mechanism, oar face and the water surface are substantially vertical, and can adjust further slurry pole length make belt wheel obtain maximum thrust running, improve generating efficiency.This loom underwater is stretched the change oar mode that the water surface shrinks and underwater energy conversion efficiency can be made to maximize and the water surface take up room minimum, is conducive to maximization and the high-power of hydroelectric installation.
2, electricity generating device proposed by the invention, when blade is positioned under the water surface, the river that can detect according to sensor and the water velocity at different depth place, ocean and water (flow) direction, according to the stressed maximum principle of whole belt wheel mechanism, the length of automatic adjustment loom, ensures that energy conversion efficiency is maximum.
3, the electricity generating device of the present invention's proposition, all devices except blade is all positioned on the water surface, improves reliability and the Security of power generation system, is easy to regular maintenance.
4, electricity generating device proposed by the invention, does not need to build dykes and dams, easy for installation, is convenient to mobile, widely applicable, river stream, plant circulation water and ocean water stream can be utilized to generate electricity, and based on existing dam, can carry out the secondary electricity generation of water generating.
Accompanying drawing explanation
Fig. 1 is the structural representation of belt wheel in electricity generating device of the present invention in embodiment; In figure, 1 is belt wheel, and 2 is loom, and 3 is blade;
Fig. 2 A, Fig. 2 B are respectively a kind of concrete structure schematic diagram of length-adjustable blade at contraction state, stretched condition;
Fig. 3 is the structured flowchart of variable blade control system in embodiment;
In figure, each label implication is as follows:
1 is belt wheel, and 2 is loom, and 3 is blade, and 4 is block.
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described in detail:
Flowing water power generation device of the present invention, comprises the floating platform that may float on the water surface, the generator be arranged on floating platform, and for fixing the anchor of described floating platform; Pipelined channel through before and after described floating platform bottom is provided with, in described pipelined channel, be provided with the belt wheel that can rotate along the longitudinal direction of pipelined channel, the rotating shaft of described belt wheel is connected by the rotating shaft of driving mechanism with described generator; Described flowing water power generation device also comprise one group of blade be flexibly connected with the outer ring of described belt wheel and with each blade one group of position-limit mechanism one to one, described position-limit mechanism can make the blade corresponding to it below belt wheel, be in the working state had angle with water (flow) direction, and above belt wheel, be in the off working state substantially parallel with water (flow) direction.Generator is positioned on floating platform, each floating platform can install one or more generator, generator can be connected with belt wheel rotating shaft by step-up drive structure, also direct drive generator can be adopted to be connected with belt wheel running shaft, the electricity that generator sends can to apparatus for storing electrical energy charging after over commutation, also can after commutation inversion process direct supply consumer or grid-connected with electrical network.Floating platform is fixed by adopting anchor, and such as, respectively have at four angles of floating platform the hole always passing into river bed, can insert fixing stake in hole, fixing floating platform can not move forward and backward; Or by wirerope, floating platform is connected to other fixtures.
The present invention to utilize with the pulley structure of blade as energy conversion elements, and waterpower is converted to electric energy, and blade can in water time be automatically opened for working state, after leaving water, be then automatically converted to the off working state substantially parallel with water (flow) direction.The present invention also can adopt length-adjustable blade further, and utilizes a set of control system automatically to regulate the length of blade according to actual environment, thus improves transformation of energy effect as far as possible.Fig. 1 shows a kind of preferred structure of the pulley structure energy conversion elements as core of the present invention.As shown in Figure 1, belt wheel 1 is provided with one group of blade, each blade includes length-adjustable loom 2 and is arranged at the blade 3 of loom 2 end; Loom 2 is connected with belt wheel 1 by hinges.A position-limit mechanism is provided with corresponding to each blade, as shown in Figure 1, this position-limit mechanism can make blade be in below belt wheel to have angle (in order to ensure that blade upstream face can be subject to the maximum impulse force of current with water (flow) direction, preferably make blade and water (flow) direction substantially vertical, namely the scope of described angle is preferably 80 ° ~ 100 °) working state, and above belt wheel, be in the off working state substantially parallel with water (flow) direction.The concrete form of position-limit mechanism can be chosen according to actual needs, and here is two kinds of better simply implementations:
The first, described position-limit mechanism is and the block being fixed on described belt wheel 1 outer peripheral surface, to be arranged at when blade is positioned at below belt wheel current dorsad come to side.When blade go to enter in water below belt wheel time, due to Action of Gravity Field, blade can naturally droop to vertical with the water surface, its dorsad current come to block effect under, current produce impact force pass to belt wheel 1 by hinge and block, belt wheel is rotated; When blade go to leave the water surface time, as shown in Figure 1, equally because Action of Gravity Field blade naturally droops, when going to above belt wheel, blade is substantially parallel with water (flow) direction.Like this, the impact that blade is subject to wind resistance on the water surface is minimum, effectively can improve energy conversion efficiency, and meanwhile, the installing space between belt wheel and floating platform is also minimum, and the structure of whole electricity generating device can be compacter.
The second, described position-limit mechanism are the rope chain that two ends are connected with belt wheel and blade respectively, be arranged at when blade is positioned at below belt wheel towards current come to side.This similar stayed-cable bridge, when blade go to enter in water below belt wheel time, under gravity, blade can naturally droop to vertical with the water surface, the tension balanced that water flow impact pressure and rope chain produce, like this, the impact force that current produce passes to belt wheel 1 by hinge and rope chain, and belt wheel is rotated; When blade go to leave the water surface time, as shown in Figure 1, equally because Action of Gravity Field blade naturally droops, when going to above belt wheel, blade is substantially parallel with water (flow) direction.
The speed of river waterflow and the flow velocity of sea tide may be different at different depth place, for ensureing that blade obtains maximum thrust, blade in the present embodiment comprises length-adjustable loom 2 and blade 3, and utilize the length of a set of active control system to loom 2 to adjust, thus hydro-flow thrust large as far as possible can be obtained.Fig. 2 A and Fig. 2 B shows a kind of concrete structure of blade, and wherein, Fig. 2 A is contraction state, and Fig. 2 B is stretched condition.Loom 2 inside has the node control unit (not shown) that hydraulic pressure for regulating loom length or air pressure driving mechanism are connected with driving mechanism signal.In order to effectively control each blade according to actual environment, the electricity generating device of the present embodiment also comprises the sensing device that can detect the water velocity at different water depth place, and carries out the main control unit of information interaction with described sensing device and each node control cell signal.Main control unit, sensing device, node control unit just constitute the active variable blade control system of complete set, and Fig. 3 shows the basic framework of this control system.Main control unit carries out information interaction by data/address bus and each node control unit, and the data/address bus in the present embodiment is RS485 bus.
In the working procedure of electricity generating device reality, change oar can be carried out by the following method and control:
Step 1, main control unit are according to by the maximum depth of water scope of described sensing device determination water velocity;
Step 2, main control unit are adjusted by the loom length of each node control unit to each blade, when each blade is positioned at below belt wheel, its blade is in the maximum depth of water scope of water velocity, simultaneously, make the blade height along any two adjacent blades of water (flow) direction there is height difference (such as height difference can get the blade height of 1/N), thus avoid the impact current of the blade in front to blade below to have an impact as far as possible.
In the present embodiment, the blade of each blade is also respectively arranged with position transducer, for detecting blade present position, when blade leave water enter off working state time, node control unit controls blade is contracted to most short status.
Consider that electricity generating device of the present invention can in multiple applications such as rivers, lake, ocean, heating power power plant warm water discharge pipelines, therefore, the preferred anticorrosion material of material of loom and blade, the wherein anticorrosion oilcloth of the cheapness of the preferred industrial extensive application of paddle material, thus device fabrication cost can be reduced further.
Electricity generating device of the present invention utilizes the pulley structure of variable oar to realize the conversion of flow energy, and its structure is simple, it is with low cost to realize, and has higher energy conversion efficiency simultaneously; Can according to the concrete size of actual use occasion determination electricity generating device, can be small-sized, medium-sized, can be also large-scale, super sized type, therefore application area be wider.
Claims (9)
1. automatically become a flowing water power generation device for oar, it is characterized in that, comprise the floating platform that may float on the water surface, the generator be arranged on floating platform, and for fixing the anchor of described floating platform; Pipelined channel through before and after described floating platform bottom is provided with, in described pipelined channel, be provided with the belt wheel that can rotate along the longitudinal direction of pipelined channel, the rotating shaft of described belt wheel is connected by the rotating shaft of driving mechanism with described generator; Described flowing water power generation device also comprise one group of blade be flexibly connected with the outer ring of described belt wheel and with each blade one group of position-limit mechanism one to one, described position-limit mechanism can make the blade corresponding to it below belt wheel, be in the working state had angle with water (flow) direction, and above belt wheel, be in the off working state substantially parallel with water (flow) direction; Described blade comprises length-adjustable loom, is arranged at the blade of loom end, and the node control unit that the driving mechanism that can regulate loom length is connected with driving mechanism signal; Described flowing water power generation device also comprises the sensing device that can detect the water velocity at different water depth place, and can carry out the main control unit of information interaction with described sensing device and each node control unit.
2. flowing water power generation device as claimed in claim 1, it is characterized in that, described position-limit mechanism is and the block being fixed on described belt wheel outer peripheral surface, to be arranged at when blade is positioned at below belt wheel current dorsad come to side.
3. flowing water power generation device as claimed in claim 1, it is characterized in that, described position-limit mechanism is the rope chain that two ends are connected with belt wheel and blade respectively, be arranged at when blade is positioned at below belt wheel towards current come to side.
4. flowing water power generation device as claimed in claim 1, it is characterized in that, the scope of described angle is 80 ° ~ 100 °.
5. flowing water power generation device as claimed in claim 1, is characterized in that, realize information interaction between described main control unit and each node control unit by data/address bus.
6. flowing water power generation device as claimed in claim 5, it is characterized in that, described data/address bus is RS485 bus.
7. flowing water power generation device as claimed in claim 1, it is characterized in that, the material of described blade is anticorrosion oilcloth.
8. the change oar method of flowing water power generation device as described in any one of claim 1 ~ 7, is characterized in that, comprise the following steps:
Step 1, main control unit are according to by the maximum depth of water scope of described sensing device determination water velocity;
Step 2, main control unit are adjusted by the loom length of each node control unit to each blade, and when each blade is positioned at below belt wheel, its blade is in the maximum depth of water scope of water velocity.
9. become oar method as claimed in claim 8, it is characterized in that, when main control unit is adjusted by the loom length of each node control unit to each blade, while its blade is in the maximum depth of water scope of water velocity when making each blade be positioned at below belt wheel, the blade height of any two the adjacent blades along water (flow) direction is also made to there is height difference.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510179356.0A CN104791178A (en) | 2015-04-15 | 2015-04-15 | Flowing water power generation device achieving automatic pitch varying and pitch varying method thereof |
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| CN201510179356.0A CN104791178A (en) | 2015-04-15 | 2015-04-15 | Flowing water power generation device achieving automatic pitch varying and pitch varying method thereof |
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Cited By (5)
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| CN105179144A (en) * | 2015-10-27 | 2015-12-23 | 庄秀宝 | Crawler type water flow power generating device and use method thereof |
| CN105952569A (en) * | 2016-06-27 | 2016-09-21 | 毛永波 | Wheel direction flowing force extension flowing plate vehicle and power generation system |
| CN110454311A (en) * | 2019-08-14 | 2019-11-15 | 宝鸡市林山环保科技推广有限公司 | A kind of crawler type hydraulic turbine |
| CN110529325A (en) * | 2018-05-24 | 2019-12-03 | 张振文 | Hydraulic energy conversion power generation equipment and its system |
| EP4339448A1 (en) * | 2022-09-16 | 2024-03-20 | POP - The Social Media Bubble Popper Oy | Method and apparatus for producing energy from moving fluid |
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| US20080303284A1 (en) * | 2007-06-08 | 2008-12-11 | Mark Hayes Clemens | Apparatus for converting water current into electricity |
| JP2014185599A (en) * | 2013-03-25 | 2014-10-02 | Ryusei Yamamoto | Flowing water power generation device |
| CN204591570U (en) * | 2015-04-15 | 2015-08-26 | 包金明 | A kind of flowing water power generation device of automatic change oar |
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| DE10358240A1 (en) * | 2003-12-06 | 2005-06-30 | Meyer, Ullrich, Dr.-Ing. | Bucket belt, e.g. for extracting energy from moving water, has laminar elements joined by mutually parallel closed traction elements (belt, cord, chain) in freely oscillating manner with range of oscillations at least partly limited by stop |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105179144A (en) * | 2015-10-27 | 2015-12-23 | 庄秀宝 | Crawler type water flow power generating device and use method thereof |
| CN105952569A (en) * | 2016-06-27 | 2016-09-21 | 毛永波 | Wheel direction flowing force extension flowing plate vehicle and power generation system |
| CN105952569B (en) * | 2016-06-27 | 2018-11-16 | 毛永波 | It takes turns to the flexible flowing plate vehicle of stream power and electricity generation system |
| CN110529325A (en) * | 2018-05-24 | 2019-12-03 | 张振文 | Hydraulic energy conversion power generation equipment and its system |
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| EP4339448A1 (en) * | 2022-09-16 | 2024-03-20 | POP - The Social Media Bubble Popper Oy | Method and apparatus for producing energy from moving fluid |
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Application publication date: 20150722 |