CN111520274A - Wave energy storage power generation system - Google Patents
Wave energy storage power generation system Download PDFInfo
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- CN111520274A CN111520274A CN202010307396.XA CN202010307396A CN111520274A CN 111520274 A CN111520274 A CN 111520274A CN 202010307396 A CN202010307396 A CN 202010307396A CN 111520274 A CN111520274 A CN 111520274A
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- 238000010248 power generation Methods 0.000 title claims abstract description 68
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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
- F03B13/14—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 using wave energy
- F03B13/22—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 using wave energy using the flow of water resulting from wave movements to drive a motor or turbine
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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
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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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
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
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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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- 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
- Y02E10/50—Photovoltaic [PV] 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a wave energy storage power generation system, and mainly relates to the field of comprehensive power generation. The integrated energy storage platform module comprises a perfusion channel, a perfusion impeller, a speed-increasing mechanism, a water pump and/or an air compressor, wherein the perfusion channel is used for filling seawater to enable the perfusion water wheel to rotate in a single direction, the perfusion impeller is linked with an input shaft of the speed-increasing mechanism, and an output shaft of the speed-increasing mechanism provides kinetic energy for the water pump and/or the air compressor; the energy storage device comprises an energy storage device; the energy storage device is connected with the power generation module to provide kinetic energy, and the seabed anchoring module is used for fixing the system. The invention has the beneficial effects that: the wave energy is converted into stable and sustainable electric energy by unstable power generation, and the wave energy is fully utilized by reasonable diversion.
Description
Technical Field
The invention relates to the field of comprehensive power generation, in particular to a wave energy storage power generation system.
Background
With the increasing global energy consumption, the traditional fossil energy reserves are gradually reduced, and the energy problem becomes more serious. The novel green pollution-free energy has attracted people's attention. Renewable energy refers to energy that can be continuously regenerated in nature and regularly supplemented or recycled, such as solar energy, wind energy, ocean energy, biomass energy, and hydroenergy.
The ocean occupies 70% of the sphere surface, and huge energy is stored, wherein the huge energy comprises wave energy, tidal energy, ocean current energy, temperature difference energy, salt difference energy and the like. Among them, wave energy has the least influence on the environment during the development process and exists in the form of mechanical energy, and is one of the more recently studied energy sources in the ocean energy utilization research.
Wave energy is increasingly paid attention to by many countries in the world due to the characteristics of being renewable, green and environment-friendly and abundant in reserves. Most of wave energy resources in China are distributed in Bohai sea and the southeast coastal region, and the utilization rate of the wave energy resources accounts for more than 50% of ocean energy. The research on wave energy dates back to the birth of the first wave energy generator in the world of the 20 th century and the 50 th year. The wave energy power generation can supply power for offshore operation equipment and can also supply power for remote sea areas, and the special advantage is shown.
Wave energy power generation device
The wave energy power generation principle is mainly to convert wave force into compressed air to drive an air turbine generator to generate power. The conversion of wave energy is typically of three stages. The first stage is wave energy collection, and dispersed wave energy is collected by adopting wave collecting and resonance methods. The second stage is intermediate conversion, i.e. the energy transfer process, including mechanical transmission, low-pressure hydraulic transmission, high-pressure hydraulic transmission, pneumatic transmission, so that the wave energy is converted into useful mechanical energy. The third stage conversion is also called final conversion, i.e. conversion of mechanical energy into electrical energy by means of a generator.
Current research on wave power plants includes: the wave energy device comprises an oscillating water column type wave energy device, a pendulum type wave energy device and a wave-gathering energy-storage type wave energy device. The oscillating water column type and the oscillating type generate wave energy based on fluctuating sea surface motion, so that the device is made to swing and rotate to drive the turbine to rotate to generate power; the wave-gathering type is based on wave pressurization to form high-pressure water impact on a water turbine to rotate to generate power.
At present, although wave energy power generation technology has attracted wide attention of countries all over the world, a plurality of development bottleneck problems exist.
Independent technology immaturity
The wave energy power generation technology is still in a divergent state, different development directions of various technologies exist, but the development trend is to continuously develop towards the directions of high efficiency, high reliability and low manufacturing cost so as to form a mature technology with low cost, and finally, the power generation cost can be greatly reduced through the large-scale production and application.
a) Independent power generation. The earliest wave energy power generation device needs to be connected with a diesel engine in parallel to work, and is easy to cause pollution. Later, the electric energy converted by wave energy is supplied to the power grid to be used by depending on the power grid, so that the problems of high power generation cost, small power generation power, poor quality and the like are caused due to the limitation of the coverage range of the power grid;
b) the electric energy is stable. Due to technical limitation, the wave energy power generation device can only convert the absorbed wave energy into unstable hydraulic energy, so that the reconverted electric energy is also unstable;
c) the problem of energy control. Because the wave motion is irregular and periodic, energy is remained when the wave is large, and energy is insufficient when the wave is small. There is a need for a device that stores excess wave energy in high waves and reuses it in low waves.
Special material is immature
Materials of the wave energy device should meet the seawater corrosion resistance; the cost is low; better durability and reliability. Stainless steel satisfies corrosion resistance and endurance reliability, but does not satisfy cheapness; the engineering plastics have obviously improved strength, but the durability and the reliability of the engineering plastics cannot reach the standard. Therefore, the existing wave energy device only adopts common steel, improves the corrosion resistance by the surface coating, and has insignificant durability. In addition, the industrial product series are too few, and at present, the industrial products specially developed for wave energy utilization do not exist, and only can be developed gradually.
Uneconomic cost of electricity
At present, the cost of wave energy power generation is 10 times that of conventional power generation.
Disclosure of Invention
The invention aims to provide a wave energy storage power generation system which can convert unstable power generation of wave energy into stable and sustainable electric energy through energy storage power generation, fully utilize the wave energy through reasonable diversion, has strong operability and strong maintainability, can realize the optimized configuration of energy, can promote energy conservation and emission reduction, and has great significance.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a wave energy storage power generation system comprising:
the integrated energy storage platform module comprises a mounting platform floating on the sea surface, wherein a wave energy collecting device and an energy storage device are arranged on the mounting platform,
the wave energy collecting device comprises a perfusion channel, a perfusion impeller, a speed increasing mechanism, a water pump and/or an air compressor, wherein the perfusion impeller is horizontally and rotatably arranged in the middle of the perfusion channel, the perfusion channel is arranged in a direction vertical to sea waves, the middle of the perfusion channel opposite to a wave incoming end and a wave removing end forms tightening, so that a perfusion water wheel rotates, the perfusion impeller is linked with an input shaft of the speed increasing mechanism, and an output shaft of the speed increasing mechanism provides kinetic energy for the water pump and/or the air compressor;
the energy storage device comprises an energy storage device, a closed cavity is arranged in the energy storage device, the energy storage device is connected with an air duct, a water inlet pipe and a water outlet pipe, the air duct is used for injecting compressed air with the pressure of more than 1 atmosphere, and the water inlet pipe pumps seawater into the energy storage device through a water pump;
the power generation module is arranged on the energy collection and storage platform module or on the coast, a back pressure turbine or a water turbine is used for generating power, and potential energy is from high-pressure gas or high-pressure seawater of a water outlet pipe in the energy storage device;
and the seabed anchoring module is used for fixing the system in an anchoring mode.
Still include solar energy collection module, include solar panel, install on mounting platform.
The energy collecting and storing platform module is a plurality of energy collecting and storing modules which are arranged side by side and connected through the elastic connecting device between each row of energy collecting and storing modules, the elastic connecting device comprises two connecting seats, two hydraulic springs and two limiting chains, the two connecting seats are respectively fixedly connected with the two ends of each hydraulic spring on the extension amount, the two limiting chains are also two, the two ends of each limiting chain are respectively fixed on the connecting seats on the same side, and the length of each limiting chain is equal to the length of each hydraulic spring when the hydraulic spring extends to the maximum amount.
And anti-collision fences are arranged at the front end and the rear end of the mounting platform.
The improved sea wave-breaking device is characterized in that a box body is arranged below the mounting platform, the side faces of four shafts of the box body are of a closed structure, two vertical end faces opposite to sea waves are of an open structure, side wave guide plates with middle parts contracted and opening parts opened to be of a horn-mouth structure are arranged on the left inner wall and the right inner wall of the box body, a perfusion water wheel located below the sea surface is mounted between the wave guide plates, a lower wave guide plate is arranged below the incoming waves of the impeller and used for shielding the lower half part of the water wheel in the incoming wave direction, an upper wave guide plate is arranged above the outgoing waves of the perfusion impeller and used for shielding the upper half part of the water wheel in the outgoing wave direction, and.
A cavity formed between adjacent side wave guide plates is a main energy accumulator, the lower wave guide plate and the inner wall of the lower side of the box body form a lower flow guide energy accumulator, the upper wave guide plate and the inner wall of the upper side of the box body form an upper flow guide energy accumulator, the upper part of the main energy accumulator and the upper flow guide energy accumulator are connected with a ventilation pipeline, and compressed air with the pressure of more than 1 atmosphere is filled into the energy accumulator through an air compressor; the middle part of the main energy accumulator and the upper part of the lower diversion energy accumulator are connected with a water inlet pipeline, and the seawater sucked by the water pump is received and stored in the energy accumulator; the bottom of the main energy accumulator and the bottom of the lower diversion energy accumulator are connected with a water outlet pipeline; and water outlet pipelines on all the platforms are connected with the power generation module, and the impact water turbine drives the generator to generate power.
According to the second scheme, a door-shaped frame is arranged in the middle of the top of the mounting platform, a perfusion water wheel located on the sea surface is mounted between the door-shaped frames, a lower wave guide plate is arranged below the perfusion water wheel, the lower wave guide plate is arched in the middle and forms a tangent plane with the circumferential surface of the bottom side of the perfusion water wheel, an upper wave guide plate is arranged on the middle lower portion of the perfusion water wheel, the upper wave guide plate is sunken in the middle and forms a perfusion channel together with the lower wave guide plate, and the opposite wave coming end and the wave removing end of the perfusion channel in the middle are tightened up to enable the perfusion water wheel to rotate bidirectionally.
The lower wave guide plate is arched, a cavity is formed below the lower wave guide plate and serves as an energy accumulator, and the energy accumulator is connected with the power generation module through a pipeline.
Compared with the prior art, the invention has the beneficial effects that:
compared with the traditional offshore wind power project, the power generation system has the following characteristics:
firstly, the energy collection efficiency is high. The system adopts a wave gathering and impact water wheel structure, utilizes the kinetic energy of sea waves, and has higher efficiency than that of utilizing the potential energy of the sea waves. According to the basic theory of sea waves, the kinetic energy and the potential energy of the wave energy in deep sea are basically equal, and the water particle track is a circle with the diameter equal to the height of the sea waves; the particle locus of shallow sea water is an ellipse with a major axis larger than the height of sea waves, and the kinetic energy of the waves is larger than the potential energy; in the design, wave energy larger than the length and the diameter of the impeller is gathered and then impacts the water wheel, the energy collection efficiency is higher than that of the general power generation technology by utilizing the potential energy of sea waves, and the energy collection efficiency can exceed 50% within a certain wave height range;
secondly, the conversion efficiency is high. The system adopts a compressed air and high-pressure water energy storage power generation mode, uses a water drawing energy storage power generation technology, and has higher conversion efficiency which can reach 80%. (the power generation mode is generally not more than 50% by using air conversion energy storage)
Thirdly, the viability is strong. The structural design of the platform frame has strong damage resistance; the front end and the rear end are provided with anti-collision fences which can prevent the impact of large sea floaters; wave guide plates are arranged in front of and behind the water wheel, so that the size of received sea waves can be controlled, the efficient and safe operation of the system is realized, the rotation of the water wheel can be stopped when heavy wind and heavy waves or repair is needed, and the system safety is higher.
Fourthly, maintainability is strong. The system adopts a modular design, and the main parts can be quickly disassembled and assembled; the essential elements are all fixedly installed, water pumps, air compressors, water turbines, generators and the like are all arranged on the water surface, and only the water wheel part of the energy collecting module is arranged on the sea. When maintenance and replacement are needed, the water surface can be lifted to be completed on the platform.
Fifthly, the construction is simple, and large-scale power generation can be realized. The number of the integrated energy storage platform modules can be determined according to the scale requirement, each platform module can be assembled and manufactured in a factory, and only the connection and the anchoring between the platforms are needed in the sea.
Sixthly, the adaptability is good. The system can be installed in deep sea or offshore on shore. When the power generation module is installed on the offshore place, a bridge can be built to be communicated with the land, so that personnel, equipment and power cables can be laid conveniently, the power generation module can be directly installed on the land, and the later-stage power station equipment is relatively simple and convenient to maintain and replace parts.
Drawings
FIG. 1 is an elevational view of the present invention.
Fig. 2 is a top view of an integrated energy storage platform module of the present invention.
Fig. 3 is a side view of the integrated energy storage platform module of the present invention.
Fig. 4 is a cross-sectional view of an integrated energy storage platform module of the present invention.
Fig. 5 is a top plan view of the main accumulator of the present invention.
Fig. 6 is a side view of the main accumulator of the present invention.
Fig. 7 is a top view of the lower flow-directing accumulator of the present invention.
Fig. 8 is a top view of the upper flow-directing accumulator of the present invention.
Fig. 9 is a front view of the related structure of the water wheel of the invention.
Fig. 10 is a side view of the related structure of the water wheel of the invention.
Fig. 11 is a top view of the related structure of the water wheel of the invention.
FIG. 12 is an enlarged view of part A of the present invention.
Fig. 13 is a front view of a structure related to embodiment 2 of the present invention.
FIG. 14 is a side view of a structure relating to embodiment 2 of the present invention.
FIG. 15 is a top view of a structure relating to embodiment 2 of the present invention.
Reference numerals shown in the drawings:
1. mounting a platform; 2. a perfusion impeller; 3. a speed increasing mechanism; 4. a side waveguide plate; 5. a lower wave guide plate; 6. an upper wave guide plate; 7. contracting the wave channel; 9. a main energy storage; 10. an upper flow guiding energy storage device; 11. a lower diversion energy storage device; 12. a solar energy collection module; 13. a power generation module; 14. an elastic connection means; 15. a connecting seat; 16. a hydraulic spring; 17. and a limiting chain.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.
Example 1: wave energy storage power generation system
The core of the power generation system consists of a plurality of integrated energy storage platform modules and power generation modules 13, the integrated energy storage platform modules and the power generation modules are arranged in the deep sea in a direction perpendicular to the direction of sea waves, and float on the sea surface and are anchored and connected with the sea bottom; arranged offshore along a shoreline and fixedly connected to the sea floor. The device also comprises a platform elastic connecting device 14 for connecting the integrated energy storage platform module and the power generation module 13, a solar energy collection module 12 and a seabed anchoring module.
1) Integrated energy storage platform module
The integrated energy storage platform module comprises a plurality of installation platforms 1 arranged side by side, wherein the installation platforms 1 float on the sea surface and are arranged in the deep sea position perpendicular to the direction of sea waves or are fixed on the sea bottom along a shoreline through anchoring. A support structure of a frame structure is adopted. The platform is provided with a current collecting circuit, an air duct and a water inlet and outlet duct; the front end and the rear end of the platform are provided with anti-collision fences which can prevent the impact of large sea floaters;
the installation platform 1 is provided with a wave energy collecting device and an energy storage device
The wave energy collecting device is mainly used for collecting wave energy, and because the wave energy is discontinuous and has large fall natural potential energy, the impact force has great difference, and if the problem of great potential energy difference cannot be solved, the wave energy collecting device is difficult to realize effective utilization.
Comprises a perfusion channel, a perfusion impeller 2, a speed increasing mechanism 3, a water pump and an air compressor,
the perfusion impeller 2 is horizontally placed and installed in the middle of a perfusion channel and can be rotatably installed, specifically, in the example, the perfusion impeller 2 is arranged below the sea surface, a box body perpendicular to the sea surging moving direction is arranged below the installation platform 1, the side faces of four shafts of the box body are of a closed structure, two vertical end faces of relative sea waves are of an open structure, and the end faces are used for being filled with and passing through the sea waves. Side wave guide plates 4 with the middle parts contracted and the opening parts opened as a bell mouth structure are arranged on the left inner wall and the right inner wall of the box body and are used for improving the seawater irrigation effect, a perfusion water wheel positioned below the sea surface is arranged between the wave guide plates, a lower wave guide plate 5 is arranged below the incoming waves of the impeller and is used for shielding the lower half part of the water wheel in the incoming wave direction, an upper wave guide plate 6 is arranged above the outgoing waves of the perfusion impeller 2 and is used for shielding the upper half part of the water wheel in the outgoing wave direction,
the side wave guide plate 4, the lower wave guide plate 5 and the upper wave guide plate 6 are all fixed on the inner wall of the box body, so that a front contraction wave channel 7 and a rear contraction wave channel 7 are formed in front of the incoming waves of the perfusion impeller 2. And respectively shields the lower half part of the water wheel in the incoming wave direction and the upper half part of the water wheel in the echo wave direction, so that the water wheel can rotate in a single direction,
the water wheel realizes mechanical transmission with the input shaft of the speed increasing mechanism 3 through belt transmission, the output shaft of the speed increasing mechanism 3 is connected with and drives the water pump and the air compressor, seawater is pumped by the water pump, the seawater is pressed into the lower part of the energy storage device through the water inlet pipe, and the air compressor is used for pressurizing the energy storage device.
The speed increasing mechanism 3 is specifically a gear box, a plurality of matched gears are arranged in the speed increasing mechanism, and transmission between the input shaft and the output shaft is realized through meshing.
The wave energy collecting device consists of an impact water wheel, a speed increasing mechanism 3 and a water pump (/ air compressor). The wave energy collecting device is installed on an installation platform 1 of an integrated energy storage platform module and is positioned in the middle of a front shrinkage wave channel 7 and a rear shrinkage wave channel 7 which are formed by the energy storage modules, a water wheel is horizontally placed under the sea surface, when waves come, the front shrinkage wave channel 7 enables the gathered waves to impact the upper half part of an impeller to enable the impeller to rotate, when echoes occur, the rear shrinkage wave channel 7 enables the gathered waves to impact the lower half part of the impeller to enable the water wheel to rotate in the same direction, and the rotating water wheel drives a water pump to extract seawater through a speed increasing mechanism 3.
The energy storage device is used for storing and converting wave energy obtained by the wave energy skill device, and has good balance effect on the wave energy by replacing the wave energy with pressurized water and then generating electricity.
The energy storage module consists of a main energy storage device 9 and an upper and lower flow guide energy storage device 11 which are connected through a pipeline, and the energy storage mode is compressed air (or compressed air and high-pressure water) energy storage; the energy storage appearance all passes through special design, installs and constitutes contraction wave channel 7 around on the platform to shelter from the lower half and the upper half of waterwheel respectively. The energy storage module not only has an energy storage function, but also has a wave gathering function, and simultaneously plays a floating supporting role in the whole power generation system. In the design, an energy storage mode of compressed air and high-pressure water is adopted,
in this example, in combination with the above description, the side waveguide plate 4 and the side wall of the box form a main energy accumulator 9, the lower waveguide plate 5 and the lower inner wall of the box form a lower guiding energy accumulator 11, the upper waveguide plate 6 and the upper inner wall of the box form an upper guiding energy accumulator 10, and in combination with the shape and arrangement of the waveguide plate, the space is integrally designed and comprehensively utilized. The upper part of the main energy storage 9 and the upper diversion energy storage 10 are connected with a ventilation pipeline, and compressed air with the pressure of more than 1 atmosphere is filled into the energy storage through an air compressor; the middle part of the main energy accumulator 9 and the upper part of the lower diversion energy accumulator 11 are connected with a water inlet pipeline, receive seawater drawn by a water pump and store the seawater in the energy accumulator; the bottom of the main energy accumulator 9 and the bottom of the lower diversion energy accumulator 11 are connected with a water outlet pipeline; the water outlet pipelines on all the platforms are connected with the power generation module 13, and when needed, seawater is pressed into the power generation module 13 through the water outlet pipelines to impact the water turbine to drive the generator to generate power.
2) Solar energy collection module 12
In order to make up the inconsistency and the tidal property of wave energy and combine abundant solar energy resources on the sea surface, the system is combined with solar energy to comprehensively integrate power generation, particularly a solar panel and is arranged on an installation platform 1 of an energy collection and storage platform unit;
this example adopts the design of wave energy storage + solar electric system that draws water, and the principle is: a plurality of groups of specially designed energy accumulators form an offshore energy collection and storage power generation platform, a solar panel is arranged at the upper part of the offshore energy collection and storage power generation platform for solar power generation, a wave energy collection device is arranged at the lower part of the offshore energy collection and storage power generation platform, seawater is pumped into a closed cavity with certain pressure through the driving of kinetic energy in wave energy to form a high-pressure water head, and then a water wheel-generator is driven by the high-pressure water head to generate power. The energy collecting part of the wave energy adopts a contraction wave channel 7 design and a water wheel scheme: the water wheels are horizontally arranged, the front and the back of the water wheels are respectively provided with a contraction wave channel 7, the lower half part of the water wheel in the incoming wave direction and the upper half part of the water wheel in the echo wave direction are respectively shielded, the water wheels can rotate in a single direction, and the water pump is driven by the speed increasing mechanism 3 to pump seawater for energy storage. When waves come, the seawater which is subjected to energy collection through the contraction wave channel 7 impacts the upper half part of the water wheel to rotate, and similarly, the echo waves of the waves impact the lower half part of the water wheel to rotate in the same direction through the seawater which is subjected to energy collection through the contraction wave channel 7, the rotating water wheel drives the water pump to pump the seawater through the speed increasing mechanism 3, and the seawater is pressed into the lower part of the energy accumulator through the water inlet pipe; compressed air with pressure greater than 1 atmosphere is stored in the energy accumulator, and the compressed air enables the seawater in the energy accumulator to have certain pressure, so that a pressure water head is formed; the pressure water head impacts the water turbine through the water outlet pipe to drive the generator to generate electricity.
In this example, because a plurality of integrated energy storage platform modules are arranged side by side, the side walls of adjacent boxes are omitted and the cavities, i.e. the main energy storages 9, are formed by adjacent side deflectors 4.
3) Power generation module 13
The system consists of an electric control valve, a water turbine (or a back pressure turbine), an alternating current generator, a converter and a transformer. The hydraulic turbine (or the backpressure turbine) is used for generating electricity, potential energy is from high-pressure seawater or high-pressure gas of a water outlet pipe in the energy storage device, the high-pressure seawater or the high-pressure gas stored in the energy storage device drives the hydraulic turbine (or the backpressure turbine) to rotate, and therefore the generator is driven to generate electricity.
The energy storage device is connected with the energy storage and power generation module 13 in the combined power generation module 13 through a pipeline.
The power generation module 13 may be mounted on a modular integrated energy storage platform or on shore.
The solar energy storage platform and the solar modules are alternately arranged on the installation platform 1 of the integrated energy storage platform in the example.
4) Elastic connection device 14
Used for connecting two adjacent rows of mounting platforms 1 and comprises a connecting seat 15, a hydraulic spring 16 and a limiting chain 17,
the two connecting seats 15 are respectively fixedly connected with two ends of the hydraulic spring 16 on the extension amount, the two limiting chains 17 are also arranged, two ends of each limiting chain 17 are respectively fixed on the connecting seats 15 on the same side, and the length of each limiting chain 17 is equal to the length of the hydraulic spring 16 when the extension amount is maximum.
The elastic connection device 14 is used for realizing the elastic connection of the mounting platforms 1 in the front row and the rear row, certain buffering is realized by the hydraulic spring 16, the connection reliability is enhanced by the limiting chain 17, and the elastic connection device is particularly suitable for providing a reliable and effective connection means for the system at sea.
5) Subsea anchoring module
The whole system is mainly fixed by an anchoring mode.
Example 2: wave energy storage power generation system
The design principle and the idea of the embodiment 1 are the same, and the difference is that the specific implementation structures of the subassembly in the middle of the integrated energy storage platform module are different, and the number of the subassemblies is as follows:
1) the positions of the perfusion water wheels are different, in embodiment 1, the energy storage device is arranged by combining and utilizing a cavity space formed by the wave guide plate and the box body, in this example, the perfusion water wheels are arranged on the sea surface, and part of wave energy with large surface potential energy of the sea surface is collected. The corresponding specific structure is as follows:
a door-shaped frame is arranged in the middle of the top of the mounting platform 1, and a perfusion water wheel positioned on the sea surface is mounted between the door-shaped frames of the door-shaped frame, so that the wave energy of surface sea waves is obtained.
2) The specific structure of the perfusion channel is different,
the wave guide plate comprises a lower wave guide plate 5 and an upper wave guide plate 6, the lower wave guide plate 5 is arched below the perfusion impeller 2 and forms a tangent plane with the circumferential surface of the bottom side of the perfusion impeller 2, the upper wave guide plate 6 is an arc-shaped plate which is concave downwards and shields the upper middle part of the perfusion impeller 2, and forms a bell-mouth structure which is used for making the perfusion impeller 2 generate waves with the lower wave guide plate 5 and forms a bell-mouth structure which is used for removing waves, so that a front contraction wave channel 7 and a rear contraction wave channel 7 are formed in front of the incoming waves of the perfusion impeller 2. Therefore, the upper wave guide plate 6 and the lower wave guide plate 5 together form a perfusion channel.
3) The specific structure of the energy accumulator is different
The lower wave guide plate 5 is arched, and a cavity is formed below the lower wave guide plate to serve as an energy accumulator, so that the energy accumulator not only has an energy storage function, but also can serve as a floating supporting platform.
The energy storage device is connected with the energy storage and power generation module 13 in the combined power generation module 13 through a pipeline.
Claims (8)
1. A wave energy storage power generation system, comprising:
the integrated energy storage platform module comprises an installation platform floating on the sea surface, wherein a wave energy collecting device and an energy storage device are arranged on the installation platform,
the wave energy collecting device comprises a perfusion channel, a perfusion impeller, a speed increasing mechanism, a water pump and/or an air compressor, wherein the perfusion impeller is horizontally and rotatably arranged in the middle of the perfusion channel, the perfusion channel is arranged in a direction vertical to sea waves, the opposite wave incoming end and wave removing end of the perfusion channel in the middle are tightened, so that a perfusion water wheel rotates in a unidirectional/bidirectional mode, the perfusion impeller is linked with an input shaft of the speed increasing mechanism, and an output shaft of the speed increasing mechanism provides kinetic energy for the water pump and/or the air compressor;
the energy storage device comprises an energy storage device, a closed cavity is arranged in the energy storage device, the energy storage device is connected with an air duct, a water inlet pipe and a water outlet pipe, the air duct is used for injecting compressed air with the pressure of more than 1 atmosphere, and the water inlet pipe pumps seawater into the energy storage device through a water pump;
the power generation module is arranged on the energy collection and storage platform module or on the coast, a back pressure turbine or a water turbine is used for generating power, and potential energy is from high-pressure gas or high-pressure seawater of a water outlet pipe in the energy storage device;
and the seabed anchoring module is used for fixing the system in an anchoring mode.
2. The wave energy storage and power generation system of claim 1, further comprising a solar energy collection module, including a solar panel, mounted on the mounting platform.
3. The wave energy storage and power generation system according to claim 1, wherein the energy collecting and storing platform modules are arranged side by side, each row of energy collecting and storing modules are connected with each other through an elastic connection device, the elastic connection device comprises two connection seats, two hydraulic springs and two limiting chains, the two connection seats are fixedly connected with two ends of each hydraulic spring in the elongation, the two limiting chains are respectively fixed on the connection seats on the same side, and the length of each limiting chain is equal to the length of the hydraulic spring in the maximum elongation.
4. The wave energy storage and power generation system of claim 1, wherein anti-collision fences are disposed at the front and rear ends of the mounting platform.
5. The wave energy storage and power generation system according to claim 1, wherein a box is arranged below the mounting platform, four side surfaces of the box are all of a closed structure, two vertical end surfaces opposite to sea waves are of an open structure, side wave guide plates with a middle part being contracted and an opening being opened to be of a horn mouth structure are arranged on the left inner wall and the right inner wall of the box, a perfusion water wheel below a sea surface is arranged between the wave guide plates, a lower wave guide plate is arranged below the incoming waves of the water wheel to shield the lower half part of the upper water wheel in the incoming waves, an upper wave guide plate is arranged above the outgoing waves of the perfusion impeller to shield the upper half part of the water wheel in the outgoing waves so that the water wheel can rotate in a single direction.
6. The wave energy storage and power generation system according to claim 5, wherein a cavity formed between adjacent side wave guide plates is a main energy accumulator, the lower wave guide plate and the inner wall of the lower side of the box body form a lower diversion energy accumulator, the upper wave guide plate and the inner wall of the upper side of the box body form an upper diversion energy accumulator, the upper part of the main energy accumulator and the upper diversion energy accumulator are connected with a ventilation pipeline, and compressed air with the pressure of more than 1 atmosphere is filled in the energy accumulator through an air compressor; the middle part of the main energy accumulator and the upper part of the lower diversion energy accumulator are connected with a water inlet pipeline, and the seawater sucked by the water pump is received and stored in the energy accumulator; the bottom of the main energy accumulator and the bottom of the lower diversion energy accumulator are connected with a water outlet pipeline; and water outlet pipelines on all the platforms are connected with the power generation module, and the impact water turbine drives the generator to generate power.
7. The wave energy storage and power generation system according to claim 1, wherein gate-shaped frames are arranged in the middle of the top of the installation platform, a perfusion water wheel located on the sea surface is installed between the gate-shaped frames, a lower wave guide plate is arranged below the perfusion water wheel, the lower wave guide plate is arched in the middle to form a tangent plane with the peripheral surface of the bottom side of the perfusion water wheel, an upper wave guide plate is arranged at the middle lower part of the perfusion water wheel, the upper wave guide plate is sunken in the middle to form a perfusion channel together with the lower wave guide plate, and the opposite perfusion end and the wave removing end of the perfusion channel are tightened in the middle to enable the perfusion water wheel to rotate bidirectionally.
8. The wave energy storage and power generation system of claim 7, wherein the lower wave guide plate is arched, a cavity is formed below the lower wave guide plate to serve as an energy accumulator, and the energy accumulator is connected with the power generation module through a pipeline.
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| CN202010307396.XA CN111520274A (en) | 2020-04-17 | 2020-04-17 | Wave energy storage power generation system |
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| CN202010307396.XA CN111520274A (en) | 2020-04-17 | 2020-04-17 | Wave energy storage power generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922766A (en) * | 2022-03-03 | 2022-08-19 | 上海市机电设计研究院有限公司 | Vertical power generation device for oscillating water column wave energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922766A (en) * | 2022-03-03 | 2022-08-19 | 上海市机电设计研究院有限公司 | Vertical power generation device for oscillating water column wave energy |
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Application publication date: 20200811 |