CN110714889B - Wave energy heat accumulating type sea water temperature difference power generation device - Google Patents
Wave energy heat accumulating type sea water temperature difference power generation device Download PDFInfo
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- CN110714889B CN110714889B CN201910960822.7A CN201910960822A CN110714889B CN 110714889 B CN110714889 B CN 110714889B CN 201910960822 A CN201910960822 A CN 201910960822A CN 110714889 B CN110714889 B CN 110714889B
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- 238000010248 power generation Methods 0.000 title claims abstract description 31
- 239000013535 sea water Substances 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 230000017525 heat dissipation Effects 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 230000020169 heat generation Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000009413 insulation Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000005381 potential energy Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 241000272517 Anseriformes Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008010 sperm capacitation Effects 0.000 description 1
Classifications
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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
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
- F03G7/05—Ocean thermal energy conversion, i.e. OTEC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- 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
- F03B13/16—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 relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Sustainable Development (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention belongs to the technical field of ocean energy utilization, and provides a wave energy heat accumulating type seawater temperature difference power generation device which comprises a floater energy obtaining system, a platform system and an anchoring system. The whole set of friction liquid heats and stores heat, and the power generation device is arranged inside the platform, so that the adaptability of the whole system to the external environment is improved. The flywheel and liquid friction heating mode is adopted, so that heat generation is efficient. The inner ratchet wheel and the pawl device are used for controlling the movement of the flywheel, so that the flywheel always rotates in one direction, and when the rotation speed of the flywheel exceeds the rotation speed of the inner ratchet wheel, external wave energy cannot be transmitted to the flywheel through the movement of the inner ratchet wheel, so that the upper limit of the rotation speed of the flywheel is limited, and the safety of a flywheel system is protected. The heat collecting pipeline is in direct contact with hot liquid, and heat transfer is efficient. The water permeable net protects the safety of the heat dissipation pipeline, so that cold sea water can freely circulate around the heat dissipation pipeline. Compared with the traditional ocean temperature difference power generation device, the energy consumption for extracting deep cold sea water is saved.
Description
Technical Field
The invention belongs to the technical field of ocean energy utilization, and particularly relates to an ocean wave energy and ocean temperature difference energy power generation device.
Background
The world energy demand is increasing, and fully developing renewable energy helps human beings break through the current energy crisis. In various renewable energy forms, ocean energy is large in storage and wide in distribution, and has great development potential. Wave energy with a reserve of 25 million kW and 20 million kW of temperature difference energy are the two most important ocean energy forms.
Existing wave energy utilization technologies (such as oscillating floats, rafts, ducks, oscillating water columns and the like) generally need multistage energy conversion, namely, the wave energy is converted into mechanical energy and then the mechanical energy is converted into electric energy. Due to the characteristic of randomness of the real sea wave, the mechanical energy and the electric energy signals obtained through conversion are unstable, and a rectifying device is required to be additionally designed, so that the problems of low wave energy utilization efficiency, high construction cost and the like are caused.
The ocean temperature difference energy technology mainly utilizes the temperature difference between the surface heat source seawater and the deep cold source seawater to generate power, the power generation process is relatively stable, but pumps are additionally required to pump the heat source seawater and the cold source seawater, so that the device consumes huge energy, has limited net power generation amount and poor benefit.
Disclosure of Invention
The invention aims to combine the wave energy and the temperature difference energy with the ocean energy utilization technology, combine the advantages of the wave energy and the temperature difference energy, and overcome the respective defects of the wave energy and the temperature difference energy so as to obtain better power generation effect.
The technical scheme of the invention is as follows:
a wave energy heat accumulating type seawater temperature difference power generation device comprises a floater energy obtaining system, a platform system and an anchoring system;
The platform system comprises three parts, namely a hot liquid tank 12, a power generation tank 19 and a cooling layer from top to bottom; the thermal liquid tank 12 is wrapped with a heat insulation layer 11, and the interior is filled with liquid required by heating; the center of the hot liquid tank 12 is provided with a flywheel rotating shaft 1, the lower part of the flywheel rotating shaft is contacted with the bottom surface of the hot liquid tank 12, the middle part of the flywheel rotating shaft is fixed with a flywheel 13 by a bearing 8, and the upper part of the flywheel rotating shaft extends out of the hot liquid tank 12 and extends to the upper part of a platform 22; the flywheel rotating shafts 1 are fixed by bearings 8 on the interfaces; the flywheel rotating shaft 1 above the platform 22 is sleeved with a plurality of rotating sleeves 2, an inner ratchet wheel 29 and a pawl 28 are arranged in each rotating sleeve 2, the inner ratchet wheel 29 is fixedly connected with the inner wall of the rotating sleeve 2 and is not contacted with the flywheel rotating shaft 1, the pawl 28 is fixed on a disc fixedly connected with the flywheel rotating shaft 1, and a needle bearing is arranged between the disc and the inner wall of the rotating sleeve; the outer wall of the rotary sleeve 2 is wound with a steel wire rope 7, one end of the steel wire rope 7 is connected with the float energy obtaining system, the other end of the steel wire rope is connected with the pre-tightening spring 3, and the pre-tightening spring 3 is connected with the fixed column 5 through a buckle 4; the inner wall of the hot liquid tank 12 is wound with a heat collecting pipeline 9, and gaseous working media exist in the heat collecting pipeline 9; the left end and the right end of the heat collecting pipeline 9 extend upwards to be away from the upper surfaces of the thermal liquid tank 12 and the heat insulation layer 11, and then extend downwards along the outer wall of the heat insulation layer 11 to enter the power generation tank 19; the power generation cabin 19 comprises a turbine generator 20 and a working medium pump 21, wherein the turbine generator 20 is provided with a section of cable 10 extending above a platform 22 and is used for being connected with other electric equipment; the two ends of the heat collecting pipeline 9 respectively pass through the two turbine generators 20 in the power generation cabin 19 and continue to extend downwards to be communicated with the heat dissipation pipeline 24 in the sea; the main body of the heat dissipation pipeline 24 is a section of pipeline which descends spirally, and liquid working medium exists in the main body; the outer part of the whole heat dissipation pipeline 24 is covered with a water permeable net 25 connected with the bottom surface of the platform 22, and the water permeable net 25 and the heat dissipation pipeline 24 form a cooling layer of the platform system;
The anchoring system comprises a mooring point 23, a mooring line 26 and anchors 27, wherein the mooring point 23 is arranged at the bottoms of two sides of the platform 22, and the mooring line 26 is connected with the platform 22 through the mooring point 23 and is fixed on the sea bottom by the anchors 27;
The float energy obtaining system comprises a float 18 and a motion transmission part, wherein the motion transmission part comprises a guide rail layer 15, a pulley layer 16, a guide rail pulley 14, a turning pulley 17, a platform pulley 6 and a steel wire rope 7; the floats 18 evenly encircle the periphery of the platform 22, one side of each float 18 close to the platform 22 is connected with the vertical guide rail layer 15 through the guide rail pulley 14, a vertical pulley layer 16 is arranged between the guide rail layer 15 and the platform 22, and a pulley block formed by four turning pulleys 17 is arranged in the pulley layer 16; one end of the steel wire rope 7 is bound with the guide rail pulley 14, and the other end of the steel wire rope starts from the guide rail layer 15, passes through the pulley block of the pulley layer 16 and the platform pulley 6 fixed on the platform 22, and finally is connected with the rotary sleeve 2.
When in work, the floater 18 moves up and down under the drive of waves and drives the steel wire rope 7 to move; when the float 18 moves upwards, the wire rope 7 of the guide rail layer 15 moves upwards at the same time as the wire rope 7 is bound with the guide rail pulley 14, and the wire rope 7 in the pulley layer 16 is changed from upwards to downwards due to the action of the change pulley 17; under the action of the platform pulley 6, the steel wire rope 7 above the platform 22 moves horizontally leftwards to drive the rotary sleeve 2 to rotate clockwise, and at the moment, the pre-tightening spring 3 is stretched, and part of wave energy is converted into elastic potential energy; the inner ratchet wheel 29 rotates together with the rotating sleeve 2, but the flywheel rotating shaft 1 cannot be driven to rotate due to the action of the pawl 28; when the float 18 moves downwards, the steel wire rope 7 winds back to the rotary sleeve 2 anticlockwise under the tight state due to the action of the pre-tightening spring 3, at the moment, the pawl 28 does not have an obstructing effect on the rotation of the flywheel rotary shaft 1, and the flywheel 13 is stressed to rotate; the rotating flywheel 13 is continuously rubbed with the liquid filled with the hot liquid tank 12 to heat the liquid, so that the purpose of wave energy heat accumulation is achieved; the heat insulation layer 11 ensures that the hot liquid tank 12 does not exchange heat with the outside as much as possible; because the heat collecting pipeline 9 is in direct contact with hot liquid, heat generated by friction between the flywheel 13 and the liquid can be transferred into the heat collecting pipeline 9 with higher efficiency, liquid working medium in the heat collecting pipeline 9 is immediately boiled and evaporated into a gaseous state, the volume is rapidly expanded, and because the liquid continuously enters from one side of the working medium pump 21, the gas rapidly moves to one side of the turbine generator 20; the high-speed gaseous working medium passes through the turbine generator 20 and then pushes the turbine generator to generate electricity, and the current is transmitted to other electric equipment by means of the cable 10; the gaseous working medium enters the heat dissipation pipeline 24 and is condensed into liquid at a proper seawater temperature; the liquid working medium is pumped back to the heat collecting pipeline 9 by the working medium pump 21 and is heated to be converted into gas for cyclic power generation;
The outer walls of the heat collecting pipelines 9 are covered with heat insulation layers, so that the temperature in the heat collecting pipelines 9 is kept constant as much as possible.
The heat collecting pipeline 9 and the heat dissipating pipeline 24 are made of metal with fast heat transfer.
The outer surfaces of the platform 22, the floats 18, the steel wire ropes 7 and the water permeable net 25 are treated, so that the service life of the water permeable net is prolonged.
The flywheel 13 is provided with rough sand material on the outer surface to improve the friction heat generation efficiency.
The invention has the beneficial effects that:
(1) The random wave energy is converted into stable heat energy, and the effect of slowly releasing the heat energy is achieved by means of the movement of the gaseous working medium, so that the turbine generator can stably work.
(2) And the flywheel energy storage structure is adopted, so that the fast rotating flywheel has a gyroscopic effect, and the stability and safety of the platform are improved.
(3) The whole set of friction liquid heats and stores heat, and the power generation device is arranged inside the platform, so that the adaptability of the whole system to the external environment is improved.
(4) The flywheel and liquid friction heating mode is adopted, so that heat generation is efficient.
(5) The inner ratchet wheel and the pawl device are used for controlling the movement of the flywheel, so that the flywheel always rotates in one direction, and when the rotation speed of the flywheel exceeds the rotation speed of the inner ratchet wheel, external wave energy cannot be transmitted to the flywheel through the movement of the inner ratchet wheel, so that the upper limit of the rotation speed of the flywheel is limited, and the safety of a flywheel system is protected.
(6) The floats respectively input energy into the flywheel through the respective inner ratchet wheels, and the floats adopt a 360-degree uniform surrounding arrangement mode, so that the device can adapt to the conditions of different wave directions and random wave components on the sea.
(7) The heat collecting pipeline is in direct contact with hot liquid, and heat transfer is efficient.
(8) The spiral heat dissipation pipeline ensures that the working medium in the pipeline can exchange heat with seawater sufficiently and efficiently.
(9) The water permeable net protects the safety of the heat dissipation pipeline, so that cold sea water can freely circulate around the heat dissipation pipeline.
(10) Compared with the traditional ocean temperature difference power generation device, the energy consumption for extracting deep cold sea water is saved.
Drawings
Fig. 1 is a schematic diagram of the whole cross section of a wave energy heat accumulating type sea water temperature difference generating set.
Fig. 2 is an overall top view of the device.
Fig. 3 is a perspective view of a rotating sleeve structure and a fixed column.
Fig. 4 is a top view of a rotating sleeve structure.
In the figure: 1, a flywheel rotating shaft; 2 rotating the sleeve (12); 3, pre-tightening a spring; 4, buckling; 5, fixing the column; 6, a platform pulley; 7, a steel wire rope; 8, a bearing; 9 heat collecting pipelines; 10 cables; 11 a heat insulation layer; 12 hot tank; 13 flywheel; 14 guide rail pulleys; 15 guide rail layers; 16 pulley layers; 17 a turning pulley; 18 a float; 19 power generation cabins; a20 turbine generator; a working medium pump 21; 22 platforms; 23 mooring points; 24 heat dissipation pipelines; 25 water permeable net; 26 anchor chain; 27 anchors; 28 pawls; 29.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and specific examples:
The wave energy heat accumulating type sea water thermoelectric power generator mainly comprises a float energy obtaining system, a platform system and an anchoring system. The float capacitation system mainly comprises a float 18, a guide rail layer 15, a pulley layer 16, a guide rail pulley 14, a turning pulley 17, a platform pulley 6 and a steel wire rope 7. The platform system mainly comprises a hot tank 12, a power generation tank 19 and a cooling layer. The hot liquid tank 12 comprises a flywheel rotating shaft 1, a rotating sleeve 2, a pre-tightening spring 3, a buckle 4, a fixed column 5, a bearing 8, a heat collecting pipeline 9, a heat insulating layer 11, a flywheel 13, a pawl 28 and an inner ratchet 29. The power generation compartment 19 includes the cable 10, the turbine generator 20, and the working fluid pump 21. The cooling layer comprises heat dissipation pipes 24 and a water permeable mesh 25. The anchoring system comprises a mooring point 23, a chain 26 and an anchor 27.
In operation, the float 18 moves downwards, the rotating sleeve 2 is driven by the steel wire rope 7 to rotate anticlockwise, the inner ratchet wheel 29 also rotates anticlockwise, the pawl 28 is driven to rotate, the flywheel rotating shaft 1 connected with the pawl 28 rotates accordingly, and when the float 18 moves upwards, the pawl 28 cannot be driven by the inner ratchet wheel 29, and no energy is input to the flywheel 13. The rotating flywheel 13 generates heat by friction with the liquid in the hot tank 12, and the heat is protected by the heat insulation layer 11. The part of the heat collecting pipeline 9 extending into the hot liquid tank 12 is directly contacted with hot liquid, so that the liquid working medium in the pipeline is converted into gas. The gaseous working fluid pushes the turbine generator 20 to generate electricity as it passes through the turbine generator, and the current is transmitted to the external device of the platform 22 through the cable 10. The gaseous working medium enters the heat dissipation pipeline 24, exchanges heat with cold seawater outside the pipeline, is liquefied into liquid, and is brought back to the heat collection pipeline 9 by the working medium pump 21.
The product design of the invention fully considers the following factors:
(1) The size of the platform and the size of the floats are designed according to the wave characteristics of different sea areas, the self resonance frequency of the floats is the same as the main frequency of the local waves as much as possible, the self resonance frequency of the platform is different from the main frequency of the local waves, and the maximum movement amplitude of the floats relative to the platform is ensured.
(2) The depth of working medium in the heat collecting pipeline and the heat dissipating pipeline is selected according to the specific temperature parameters of the sea area used by the device, so that the working medium can be quickly boiled and evaporated into gas in the hot liquid tank and can be completely converted into liquid after passing through the heat dissipating pipeline.
(3) The liquid in the hot liquid tank is preferentially selected according to actual conditions, so that the specific heat capacity is ensured to be larger, and the boiling point is higher.
The construction and installation flow of the wave energy heat accumulating type seawater thermoelectric generation device is as follows:
(1) And building a heat collecting pipeline and a heat radiating pipeline module, and waiting for subsequent assembly. (2) And (4) building a platform (without capping), and building a hot liquid tank, a heat insulation layer and a power generation tank module. (3) And constructing the rest parts such as pulleys, rotating sleeves, floats and the like. (4) And (3) sequentially placing all modules except the heat collection and heat dissipation pipeline at the preset position of the platform by using a hoisting technology, reserving a lead-out position of a cable, pre-adding a sufficient amount of liquid working medium into the heat dissipation pipeline, and filling the hot liquid tank with liquid. (5) The platform is towed to a predetermined sea area and secured by an anchoring system. (6) And (3) accurately placing the heat collection and heat dissipation pipeline by using an offshore hoisting technology, and finally capping the platform. (7) And placing the platform pulley, the floater and other parts, and tensioning the steel wire rope after the steel wire rope is arranged according to the scheme of the invention.
Specific parameters of the examples are as follows:
the dimensions and body materials of the platform and the floats need to be selected according to actual sea conditions, so that the wave frequency in the set sea conditions is close to the natural oscillation frequency of the floats, but far from the natural oscillation frequency of the platform.
Taking the south sea area with the dominant wavelength of 6m as an example, the diameter of the floater can be 2m, the height is 3m, and the total of 12 floats uniformly encircle the periphery of the platform. The diameter of the platform is 13m, the height is 6m, the diameter of the flywheel is 8m, and the thickness is 1m. The diameter of the hot liquid tank is 12m, the height of the hot liquid tank is 2.6m, the size of the power generation tank is the same as that of the hot liquid tank, and the thickness of the heat insulation layer is 0.25m. The diameter of the flywheel rotating shaft is 0.5m, and the diameters of the heat collecting pipeline and the heat radiating pipeline are both 0.2m. The diameter of the fixed column is 0.15m.
The surface of the flywheel is made of rough sandy materials, the surfaces of the steel wire rope, the water permeable net, the platform and the floater are coated with anti-corrosion and anti-adhesion agents, and the diameter of the mesh of the water permeable net is 1mm, so that most marine organisms can be blocked while seawater freely passes through the water permeable net. Copper pipes are used for heat collecting pipelines in the hot liquid cabin and heat radiating pipelines in the cooling layer. The working medium in the pipeline can be taken as pressurized liquid ammonia according to the existing sea state information, and the liquid in the hot liquid tank is selected as water.
Claims (8)
1. The wave energy heat accumulating type seawater temperature difference power generation device is characterized by comprising a floater energy obtaining system, a platform system and an anchoring system;
The platform system comprises three parts, namely a hot liquid tank (12), a power generation tank (19) and a cooling layer from top to bottom; the thermal liquid tank (12) is externally wrapped with a heat insulation layer (11), and the interior is filled with liquid required by heating; the center of the hot liquid tank (12) is provided with a flywheel rotating shaft (1), the lower part of the flywheel rotating shaft is contacted with the bottom surface of the hot liquid tank (12), the middle part of the flywheel rotating shaft is fixed with a flywheel (13) by a bearing (8), and the upper part of the flywheel rotating shaft extends out of the hot liquid tank (12) and extends to the upper part of a platform (22); the flywheel rotating shafts (1) are fixed by bearings (8) on the interfaces; the flywheel rotating shaft (1) above the platform (22) is sleeved with a plurality of rotating sleeves (2), an inner ratchet wheel (29) and a pawl (28) are arranged in each rotating sleeve (2), the inner ratchet wheel (29) is fixedly connected with the inner wall of the rotating sleeve (2) and is not in contact with the flywheel rotating shaft (1), the pawl (28) is fixed on a disc fixedly connected with the flywheel rotating shaft (1), and a needle bearing is arranged between the disc and the inner wall of the rotating sleeve; the outer wall of the rotary sleeve (2) is wound with a steel wire rope (7), one end of the steel wire rope (7) is connected with the float energy obtaining system, the other end of the steel wire rope is connected with the pre-tightening spring (3), and the pre-tightening spring (3) is connected with the fixed column (5) through the buckle (4); the inner wall of the hot liquid tank (12) is wound with a heat collecting pipeline (9), and gaseous working media exist in the heat collecting pipeline (9); the left end and the right end of the heat collecting pipeline (9) extend upwards to be away from the upper surfaces of the hot liquid tank (12) and the heat insulation layer (11), and then extend downwards along the outer wall of the heat insulation layer (11) to enter the power generation tank (19); the power generation cabin (19) comprises a turbine generator (20) and a working medium pump (21), wherein the turbine generator (20) is provided with a section of cable (10) extending out of the upper part of the platform (22) and is used for being connected with other electric equipment; two ends of the heat collecting pipeline (9) respectively penetrate through two turbine generators (20) in the power generation cabin (19) and continuously extend downwards to be communicated with a heat dissipation pipeline (24) in the sea; the main body of the heat dissipation pipeline (24) is a section of pipeline which descends spirally, and liquid working medium exists in the main body; the outside of the whole heat dissipation pipeline (24) is covered with a water permeable net (25) connected with the bottom surface of the platform (22), and the water permeable net (25) and the heat dissipation pipeline (24) form a cooling layer of the platform system;
The anchoring system comprises a mooring point (23), a mooring chain (26) and anchors (27), wherein the mooring point (23) is arranged at the bottoms of two sides of the platform (22), and the mooring chain (26) is connected with the platform (22) through the mooring point (23) and is fixed on the sea bottom by the anchors (27);
The float energy obtaining system comprises a float (18) and a motion transmission part, wherein the motion transmission part comprises a guide rail layer (15), a pulley layer (16), a guide rail pulley (14), a turning pulley (17), a platform pulley (6) and a steel wire rope (7); the floats (18) uniformly encircle the periphery of the platform (22), one side of each float (18) close to the platform (22) is connected with a vertical guide rail layer (15) through a guide rail pulley (14), a vertical pulley layer (16) is arranged between the guide rail layer (15) and the platform (22), and a pulley block formed by four turning pulleys (17) is arranged in the pulley layer (16); one end of the steel wire rope (7) is bound with the guide rail pulley (14), and the other end starts from the guide rail layer (15), bypasses a pulley block of the pulley layer (16) and a platform pulley (6) fixed on the platform (22), and is finally connected with the rotary sleeve (2);
When in work, the floater (18) moves up and down under the drive of waves and drives the steel wire rope (7) to move; when the floater (18) moves upwards, the steel wire rope (7) of the guide rail layer (15) moves upwards simultaneously due to the binding of the steel wire rope (7) and the guide rail pulley (14), and the steel wire rope (7) positioned in the pulley layer (16) is changed from upwards to downwards due to the action of the direction-changing pulley (17); under the action of the platform pulley (6), the steel wire rope (7) above the platform (22) moves horizontally leftwards to drive the rotary sleeve (2) to rotate clockwise, and at the moment, the pre-tightening spring (3) is stretched, and part of wave energy is converted into elastic potential energy; the inner ratchet wheel (29) rotates together with the rotating sleeve (2), but the flywheel rotating shaft (1) cannot be driven to rotate due to the action of the pawl (28); when the floater (18) moves downwards, the steel wire rope (7) anticlockwise winds the rotary sleeve (2) in a tight state under the action of the pre-tightening spring (3), at the moment, the pawl (28) does not have an obstruction effect on the rotation of the flywheel rotary shaft (1), and the flywheel (13) is stressed to rotate; the rotating flywheel (13) is continuously rubbed with the liquid filled with the hot liquid tank (12) to heat the liquid, so that the purpose of wave energy heat accumulation is achieved; the heat insulation layer (11) ensures that the hot liquid tank (12) does not exchange heat with the outside as much as possible; the heat collecting pipeline (9) is in direct contact with hot liquid, so that heat generated by friction between the flywheel (13) and the liquid can be transferred into the heat collecting pipeline (9) with higher efficiency, liquid working medium in the heat collecting pipeline (9) is immediately boiled and evaporated into gas, the volume is rapidly expanded, and the gas rapidly moves to the side of the turbine generator (20) because the liquid continuously enters from the side of the working medium pump (21); the high-speed gaseous working medium passes through the turbine generator (20) and then pushes the turbine generator to generate electricity, and the current is transmitted to other electric equipment by means of the cable (10); the gaseous working medium is condensed into liquid at a proper seawater temperature after entering a heat dissipation pipeline (24); the liquid working medium is pumped back to the heat collecting pipeline (9) by the working medium pump (21), and is heated to be converted into gas for cyclic power generation.
2. The wave energy heat accumulating type seawater thermoelectric power generation device according to claim 1, wherein the outer walls of the heat collecting pipelines (9) are covered with heat insulation layers, so that the temperature in the heat collecting pipelines (9) is kept constant as much as possible.
3. The wave energy heat accumulating type seawater thermoelectric power generation device according to claim 1 or 2, wherein the heat collecting pipeline (9) and the heat radiating pipeline (24) are made of metal with fast heat transfer.
4. The wave energy heat accumulating type seawater thermoelectric generation device according to claim 1 or 2, wherein the surfaces of the platform (22), the floats (18), the steel wire ropes (7) and the water permeable net (25) are treated, so that the service life of the device is prolonged.
5. The wave energy heat accumulating type seawater temperature difference power generation device according to claim 3, wherein the surfaces of the platform (22), the floats (18), the steel wire ropes (7) and the water permeable net (25) are treated, so that the service life of the device is prolonged.
6. The wave energy heat accumulating type seawater thermoelectric power generating device as claimed in claim 1,2 or 5, wherein the flywheel (13) is externally provided with a rough sand material to improve the efficiency of frictional heat generation.
7. A wave energy heat accumulating type seawater thermoelectric generation device according to claim 3, wherein the flywheel (13) is provided with rough sand material on the outer surface to improve the friction heat generating efficiency.
8. The wave energy heat accumulating type seawater thermoelectric power generating device according to claim 4, wherein the flywheel (13) is made of rough sand materials on the outer surface, so that the friction heat generating efficiency is improved.
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