CN115059595A - Hydrogen energy storage solar photo-thermal power generation system utilizing convex lens array - Google Patents

Hydrogen energy storage solar photo-thermal power generation system utilizing convex lens array Download PDF

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CN115059595A
CN115059595A CN202210849320.9A CN202210849320A CN115059595A CN 115059595 A CN115059595 A CN 115059595A CN 202210849320 A CN202210849320 A CN 202210849320A CN 115059595 A CN115059595 A CN 115059595A
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heat
convex lens
lens array
energy
hydrogen
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袁流潇
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Shanghai Yiyade Technology Co ltd
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Shanghai Yiyade Technology Co ltd
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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
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • 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
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/071—Devices for producing mechanical power from solar energy with energy storage devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
    • F02B2043/106—Hydrogen obtained by electrolysis
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/133—Renewable energy sources, e.g. sunlight

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The invention discloses a hydrogen energy storage solar photo-thermal power generation system utilizing a convex lens array, and belongs to the field of solar light energy utilization. The invention provides a hydrogen energy storage solar photo-thermal power generation system utilizing a convex lens array, aiming at the problems of high cost and large loss of the existing thermal power generation, comprising an energy collecting device for collecting heat of sunlight by utilizing a convex lens, wherein the outlet of the energy collecting device, a heat storage device I, a steam generator and a steam turbine generator are sequentially connected, the outlet of the steam turbine generator is respectively connected with a power grid and a water electrolysis hydrogen production device, the steam turbine generator is also communicated with the inlet of a condenser, and the outlet of the condenser is communicated with the steam generator. The whole heat energy of the invention is obtained, thus effectively reducing the environmental pollution; the water electrolysis hydrogen production device realizes the co-production of clean hydrogen energy and photo-thermal power generation, and the hydrogen energy storage effectively solves the intermittence of solar photo-thermal utilization, realizes the adjustability and reduces the investment of the total cost of the system; the system has strong applicability and compatibility and wide application prospect.

Description

Hydrogen energy storage solar photo-thermal power generation system utilizing convex lens array
Technical Field
The invention belongs to the technical field of solar photo-thermal utilization, and particularly relates to a hydrogen energy storage solar photo-thermal power generation system utilizing a convex lens array.
Background
The existing slot type and tower type photo-thermal power generation modes mostly adopt the following modes: 1. liquid sensible heat storage: the method mainly refers to a heat storage power generation mode that molten salt is used as a heat absorption medium, the molten salt absorbs solar heat energy to form a high-temperature liquid medium at 300-1000 ℃, the high-temperature liquid medium is temporarily stored in a hot salt tank, and self high-temperature heat energy is transferred and exchanged to a working medium through equipment such as a circulating pump and a heat exchanger when needed; 2. solid sensible heat storage: the heat storage power generation mode is that the heat energy of the solar photo-thermal power generation high-temperature liquid working medium is absorbed by the high-temperature resistant concrete such as the sand concrete, the basalt concrete and the like and then is stored, and the stored heat energy is exchanged and transferred to the low-temperature liquid working medium when needed; 3. sensible heat storage with solid/liquid double media: the sensible heat storage is mainly carried out by adopting double media of water/steam and hot molten salt, and the heat storage can also be carried out by adopting a liquid/solid double-medium heat storage mode of hot oil, sand, concrete and the like. The main problems of the above several heat storage and power generation methods are: inevitable heat loss caused by heat radiation, conduction and the like in the heat storage process, so that the efficiency of the whole system is reduced; certain cost is required to be invested for heat preservation and insulation measures of the heat storage tank, and the investment cost is objectively increased.
Corresponding improvements are made to the above problems, such as chinese patent application No. cn202111269053.x, published as 2022, 2 and 25, which discloses a solar energy storage system, comprising: the solar energy heat pump system comprises a solar cell panel, a heat pump unit, an energy storage unit, a semiconductor temperature difference power generation unit, an alternating current-direct current conversion unit and an intelligent control unit. The energy storage system can store the energy of the solar cell panel or the solar heat storage panel in the energy storage unit in the daytime; the semiconductor thermoelectric power generation device outputs cold or heat to the semiconductor thermoelectric power generation unit at night, power is generated through the semiconductor thermoelectric power generation unit, mechanical operation parts are basically omitted in the power generation process, the power generation process is safe and noiseless, and the danger of fire and explosion in the traditional electric energy storage mode is fundamentally overcome. The disadvantages of the patent are that: the solar heat energy cannot be better collected and utilized, and the heat loss is serious.
Also for example, patent application No. PCT/CN2015/094099, published as 2016, 9, 29, discloses a solar photo-thermal coupled high-temperature water electrolysis hydrogen production system, which comprises a heat energy supply module, a hydrogen production and separation module and a storage module, which are connected in sequence, wherein the heat energy supply module comprises a light gathering device, a heat collecting device, a heat storage high-temperature heat pipe heat exchanger and a heat exchanger unit, which are connected in sequence, and the heat energy supply module is used for heating a mixture of water and hydrogen in the hydrogen production and separation module to a mixture of water vapor and hydrogen with a temperature of more than 800 ℃, and then electrolyzing and separating hydrogen and oxygen. Compared with the prior art, the hydrogen production system does not need to consume fossil energy, is more environment-friendly in the production process, and greatly reduces the power consumption; the solar cell provides a stable heat source, solves the problem that a photo-thermal system is unstable along with weather changes, improves the usability of the system, and simultaneously improves the electrolysis efficiency of the system. The disadvantages of the patent are that: the cost is high, and the whole system resource loss is serious.
Disclosure of Invention
1. Problems to be solved
The invention provides a hydrogen energy storage solar photo-thermal power generation system utilizing a convex lens array, aiming at the problems of high cost and large loss of the existing thermal power generation. The whole heat energy is obtained without depending on fossil energy such as burning coal, natural gas and the like, so that the environmental pollution is effectively reduced; the water electrolysis hydrogen production device reasonably utilizes the electric energy generated by the solar photo-thermal power generation to realize the co-production of clean hydrogen energy and photo-thermal power generation, and the hydrogen energy storage effectively solves the intermittence of the solar photo-thermal utilization, realizes the adjustability and reduces the investment of the total cost of the system; therefore, the whole system has strong applicability and compatibility and wide application prospect.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides an utilize hydrogen energy storage solar photothermal power system of convex lens array, is including utilizing convex lens to carry out the energy device that the heat was collected to the sunlight, and the export of energy device, heat-retaining device I, steam generator and turbo generator connect gradually, and turbo generator's export is connected with electric wire netting, water electrolysis hydrogen plant respectively, and turbo generator still communicates with the entry of condenser, the export and the steam generator intercommunication of condenser.
Furthermore, the energy gathering device comprises a convex lens array formed by a plurality of convex lenses connected in series or in parallel, and a metal plate for absorbing heat energy of the convex lens array, wherein the upper surface of the metal plate is arranged on a focal plane of the convex lens array, the lower surface of the metal plate is provided with a heat collecting pipe, a medium flow channel is arranged on the heat collecting pipe, a heat absorbing medium is arranged in the medium flow channel, and an outlet of the medium flow channel is communicated with an inlet of the heat storage device I.
Furthermore, the convex lens array is connected with the metal plate through an adjusting device, and the upper surface of the metal plate is overlapped with the focal plane formed by the light condensation of the convex lens array through the adjusting device.
Furthermore, a glass cover plate is arranged above the convex lens array and connected with the metal plate.
Furthermore, the lower surface of the metal plate is also provided with heat conducting fins which are arranged on the periphery of the heat collecting pipe.
Furthermore, the energy collecting device further comprises a heat storage device II, an inlet of the heat storage device II is communicated with the steam generator, and an outlet of the heat storage device II is communicated with an inlet of the energy collecting device.
Furthermore, temperature detection devices are arranged between the energy gathering device and the heat storage device I and between the steam generator and the heat storage device II.
Furthermore, the water electrolysis hydrogen production device is respectively communicated with the oxygen tank and the hydrogen tank, and the hydrogen tank is connected with the hydrogen generator.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the energy gathering device absorbs sunlight heat energy and focuses the sunlight heat energy into high-temperature heat energy of 450-1500 ℃, the heat energy enters a steam generator through a heat storage device I to generate steam, then the steam enters a steam turbine generator to generate electric energy, part of the electric energy in the steam turbine generator is used for subsequent use of a power supply network, and the other part of the electric energy is used for a water electrolysis hydrogen production device to generate hydrogen and oxygen, and the hydrogen can be used as a subsequent power generation raw material; the whole heat energy is obtained without depending on fossil energy such as coal and natural gas, so that the environmental pollution is effectively reduced; meanwhile, heat energy is converted into electric energy in time through the steam generator and the steam turbine generator, so that a large amount of heat energy loss and loss in the storage process are avoided, and the investment of heat preservation cost is reduced; the water electrolysis hydrogen production device reasonably utilizes the electric energy generated by the steam wheel generator, and generates hydrogen to generate electric energy again under the environments of insufficient sunlight intensity, night, rainy weather and the like, so that the whole system has strong applicability and compatibility and wide application prospect;
(2) the energy collecting device adopts a plurality of convex lenses to form an array for absorbing solar thermal energy, and the upper surface of the metal plate is overlapped with the focal plane of the convex lens array, so that the solar thermal energy absorbed by the convex lens array can be absorbed by the metal plate, then the metal plate directly transfers and exchanges the thermal energy to the heat collecting tube on the lower surface of the metal plate, a heat absorbing medium in the heat collecting tube is heated and then enters the heat storage device I for storage and subsequent use, the whole energy collecting device has a simple structure, is easy to assemble, and can efficiently collect the thermal energy of sunlight;
(3) according to the invention, the convex lens array is connected with the metal plate by adopting the adjusting device, and the arrangement of the adjusting device can further ensure that the focal plane of the convex lens array is completely overlapped with the upper surface of the metal plate, so that the heat absorption effect is ensured; the surface of the metal plate is coated with the spectral selective absorption coating layer, so that the metal heat absorption plate can be further ensured to have the effects of high absorption rate and low emissivity; the arrangement of the glass cover plate above the convex lens array can protect the convex lenses in the convex lens array, avoid the interference of external environmental factors, ensure the smooth working process of the convex lenses and prolong the service life of the convex lenses;
(4) the solar energy heat collector is also provided with a heat storage device II, the heat storage device II is communicated with the steam generator, residual media after the steam generator generates steam are returned to the heat storage device II, and the residual media are returned to the energy collecting device through the heat storage device II to circularly absorb solar heat energy and then generate steam, so that electric energy is finally generated; the arrangement of the heat storage device II further increases the cyclicity of the whole system, so that resources are recycled, and the cost is reduced; the temperature detection device is correspondingly arranged, so that the corresponding temperature can be known in time and in real time, the subsequent flow operation can be conveniently and reasonably carried out, and the safety of the whole process is improved;
(5) the water electrolysis hydrogen production device is respectively communicated with the oxygen tank and the hydrogen tank, so that hydrogen and oxygen generated after electrolysis can be effectively stored; the hydrogen tank is connected with a hydrogen generator, and the hydrogen in the hydrogen tank is subjected to air suction, compression, explosion and exhaust processes in the hydrogen generator to drive the hydrogen generator to generate current for output; the hydrogen energy generated by the water electrolysis hydrogen device is reasonably applied, so that the cost is saved, and the smoothness of power transmission is guaranteed.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic plan view of a concentrator assembly of the present invention;
FIG. 3 is a schematic plan view of a metal plate in the concentrator;
FIG. 4 is a schematic view of the structure A-A of FIG. 3;
FIG. 5 is a schematic view of the structure B-B in FIG. 3.
In the figure: 1. an energy gathering device; 11. a metal plate; 12. a heat collecting pipe; 121. an inlet; 122. an outlet; 13. a fixed block; 14. protecting the corner; 15. a heat conductive fin; 16. a short-direction side plate; 17. a long side plate; 18. vacuumizing a tube; 19. a variable cross-section screw; 110. a convex lens array; 111. a glass cover plate; 112. focusing light spots; 2. a heat storage device I; 3. a steam generator; 4. a heat storage device II; 5. a steam turbine generator; 6. a condenser; 7. a water electrolysis hydrogen production device; 8. an oxygen tank; 9. a hydrogen tank; 10. a hydrogen generator.
Detailed Description
The invention is further described with reference to specific embodiments and the accompanying drawings.
Example 1
As shown in fig. 1, a hydrogen energy storage solar photo-thermal power generation system using a convex lens array includes a concentrator 1 for collecting heat of sunlight using convex lenses. In the present embodiment, the energy concentrating device 1 is configured to collect heat energy of sunlight by using a convex lens, and a heat absorbing medium is disposed in the energy concentrating device 1, in the present embodiment, the heat absorbing medium may be water, and after the energy concentrating device 1 absorbs the heat energy, the heat absorbing medium, that is, the water in the energy concentrating device can be heated, and then a collection process is performed on the heated water. The outlet of the energy collecting device 1, the heat storage device I2, the steam generator 3 and the steam turbine generator 5 are sequentially connected, namely, the outlet of the energy collecting device 1 is communicated with the inlet of the heat storage device I2, the outlet of the heat storage device I2 is communicated with the inlet of the steam generator 3, and the outlet of the steam generator 3 is connected with the inlet of the steam turbine generator 5. The heat absorbing medium in the energy collecting device 1 absorbs high-temperature solar heat energy and then enters the storage device I2 to be stored in the storage device I2, the high-temperature heat energy enters the steam generator 3 through the storage device I2 to generate steam, and the steam further drives the steam turbine generator 5 to work to generate electric energy to complete subsequent power generation. Meanwhile, the outlet of the steam turbine generator 5 is respectively connected with the power grid and the water electrolysis hydrogen production device 7, namely, part of electric energy generated by the steam turbine generator 5 is transmitted to the power grid to complete power supply, and the other part of the electric energy enters the water electrolysis hydrogen production device 7 to electrolyze water by using the electric energy to generate hydrogen and oxygen, and the hydrogen can be used as a raw material to generate electric energy again for use. The water electrolysis hydrogen production device 7 is arranged to utilize electric energy to finally generate electric energy, and the function of storing hydrogen energy for combustion and power generation is realized. Specifically, water electrolysis hydrogen plant 7 is equipped with the power supply cable including protecting sheathing and the electrolysis trough of setting in protecting sheathing on the electrolysis trough, and the power supply cable is used for passing electricity with 5 intercommunications of turbo generator, and is provided with a plurality of pipelines on the electrolysis trough: a hydrogen generating pipeline for transmitting generated hydrogen, an oxygen generating pipeline for transmitting generated oxygen, and a raw material pipeline for transmitting and supplementing electrolyte in the electrolytic bath. Of course, since the present application does not relate to the improvement of the structure of the hydrogen production apparatus 7 by water electrolysis, and does not belong to the core creation point, the hydrogen production apparatus 7 by water electrolysis that can decompose water into hydrogen and oxygen by using electric energy can be used in the present application. And turbo generator 5 still communicates with the entry of condenser 6, the export of condenser 6 communicates with steam generator 3, the setting of condenser 6 is that the exhaust steam after turbo generator 5 does work and accomplishes and gets into in condenser 6 cooling formation liquid, liquid reentrants steam generator 3 afterwards, cryogenic liquid carries out the heat transfer with the high temperature medium that enters into steam generator 3 from heat-retaining device I2, carry out heat-conduction to cryogenic liquid, later with high temperature medium as the raw materials steam production follow-up use in steam generator 3 together, carry out rationalized use to the exhaust steam, increase entire system's cyclicity, reduce the waste of resource.
The energy gathering device 1 absorbs sunlight heat energy and focuses the sunlight heat energy into high-temperature heat energy of 450-1500 ℃, the heat energy enters the steam generator 3 through the heat storage device I2 to generate steam, then the steam enters the steam turbine generator 5 to generate electric energy, part of the electric energy in the steam turbine generator 5 is used for subsequent use of a power supply network, and the other part of the electric energy is used for the water electrolysis hydrogen production device 7 to generate hydrogen and oxygen, and the hydrogen can be used as a subsequent power generation raw material; the whole heat energy is obtained without depending on fossil energy such as coal, natural gas and the like, so that the environmental pollution is effectively reduced; meanwhile, heat energy is converted into electric energy in time through the steam generator 3 and the steam turbine generator 5, so that loss and loss of a large amount of heat energy in a long-term storage process are avoided, and then the investment of heat preservation cost is reduced; the water electrolysis hydrogen production device 7 is arranged to reasonably utilize the electric energy generated by the steam generator 3, and the hydrogen generated by the water electrolysis hydrogen production device can generate electric energy again under the environment of insufficient sunlight intensity, night, rainy weather and the like, and the water electrolysis hydrogen production device 7 is arranged to reasonably utilize the electric energy generated by the solar photothermal power generation to realize the co-production of clean hydrogen energy and photothermal power generation, and the hydrogen energy storage effectively solves the intermittence of the solar photothermal utilization, realizes the adjustability and reduces the investment of the total cost of the system; the whole system has strong applicability and compatibility and wide application prospect.
As shown in fig. 2, fig. 3, fig. 4 and fig. 5, in particular, the energy concentrating device 1 in the present embodiment includes a convex lens array 110 formed by a plurality of convex lenses connected in series or in parallel, and the focal points of the plurality of convex lenses connected in series or in parallel are located on the same plane, which is the focal plane of the convex lens array 110. The problem that the thickness, the weight and the cost of a single lens are high and only one focus cannot be continuously collected due to the fact that the single convex lens is adopted to realize the collection of the heat energy of the sunlight by adopting the convex lens array 110 instead of the single convex lens on the day. Therefore, the convex lens array 110 can have a higher light-gathering ratio, so that the working and operating temperature of subsequent heat exchange is higher, and the utilization of medium-high temperature solar thermal energy can be realized with high parameters and high efficiency. Also, the convex lens may be one of a spherical biconvex lens, an aspherical biconvex lens, a spherical plano-convex lens, and an aspherical plano-convex lens. When the biconvex lens focuses solar parallel light and has large spherical aberration, large spot diameter and unsatisfactory energy collection effect, the aspheric plano-convex lens can be used as a technical means for realizing higher light collection ratio, smaller spherical aberration and higher working medium operation temperature. The metal plate 11 for absorbing the heat energy of the convex lens array 110, specifically, the surface of the metal plate 11 is coated with a spectrum selective absorption coating, the coating has high absorption and low reflection of the solar energy occupation ratio of 95% and the wavelength of 0.3-2.5 μm of photo-thermal radiation, the heat radiation loss of the metal plate 11 to the surrounding environment is reduced while the efficiency of the metal plate 11 for absorbing the heat energy of the refraction focusing light of the convex lens array 110 is effectively improved, and the photo-thermal utilization efficiency of the whole energy collecting device 1 is improved. The convex lens array 110 is used for refracting and focusing incident solar parallel light to form a plurality of focus light spots 112 with high temperature of 450-1500 ℃ on the upper surface of the metal plate 11, and the upper surface of the metal plate 11 is arranged on a focal plane of the convex lens array 110. The lower surface of the metal plate 11 is provided with a heat collecting tube 12, a medium flowing channel is arranged on the heat collecting tube 12, a heat absorbing medium is arranged in the medium flowing channel, and an outlet of the medium flowing channel is communicated with an inlet of the heat storage device I2. Specifically, the heat collecting tube 12 is a serpentine heat collecting tube, one end of the serpentine heat collecting tube is an inlet 121, the other end of the serpentine heat collecting tube is an outlet 122, a medium flowing channel is arranged inside the serpentine heat collecting tube, a heat absorbing medium (water) enters the serpentine heat collecting tube through the inlet 121 and flows out of the outlet 122 after being heated, and the outlet 122 is communicated with an inlet of the heat storage device I2. Whole gather the simple structure of ability device 1, easily the equipment can carry out high-efficient the collection to the heat energy of sunlight, provides essential importance for the production of follow-up electric energy.
Example 2
Basically, like embodiment 1, in order to further ensure the heat collecting effect of the energy collecting device 1, in this embodiment, the convex lens array 110 is connected to the metal plate 11 through an adjusting device, and the upper surface of the metal plate 11 is overlapped with the focal plane formed by the light collected by the convex lens array 110 through the adjusting device. The distance between the convex lens array 110 and the upper surface of the metal plate 11 can be changed by setting the adjusting device, so that the upper surface of the metal plate 11 is enabled to be overlapped with the focal plane of the convex lens array 110, and the problem of poor heat absorption effect caused by non-overlapping of the upper surface and the lower surface in the using process or the transportation process is avoided. Specifically, the adjusting device comprises a fixing block 13 arranged on the metal plate 11, a mounting hole is formed in the fixing block 13, a variable cross-section screw 19 is arranged in the mounting hole, and the variable cross-section screw 19 is connected with the convex lens array 110; more specifically, the convex lens array 110 is arranged on the shell, the variable cross-section screw 19 is connected with the shell, and the distance between the upper surface of the metal plate 11 and a focal plane formed by condensing light of the convex lens array 110 is changed by changing the screwing depth of the variable cross-section screw 19 in the fixed block 13, so that the operation is simple and convenient, and the cost is low. In addition, in order to ensure the smooth operation of the convex lenses in the convex lens array 110, a glass cover plate 111 is further arranged above the convex lens array 110, and the glass cover plate 111 is connected with the metal plate 11, so that the convex lens array 110 is prevented from being interfered by external environmental factors, and the service life of the convex lens array 110 is prolonged. The metal plate 11 is rectangular, the corner protectors 14 are welded at four corners of the rectangle, and the corner protectors 14 are provided with threaded holes for fixing with the housing of the convex lens array 110. And glass wool or rock wool is filled outside the inner metal plate 11 of the corner protector 14 to reduce heat loss.
In addition, in the present embodiment, in order to further improve the heat absorption effect of the metal plate 11, heat conduction fins 15 are further disposed on the lower surface of the metal plate 11, and the heat conduction fins 15 are disposed around the heat collection tube 12. Specifically, the heat collecting tubes 12 are surrounded by the heat conducting fins 15, and the heat collecting tubes 12 are laid in the dense heat conducting fins 15, so as to enlarge the contact area between the metal plate 11 and the heat collecting tubes 12, and further improve the efficiency of transmitting the light heat energy refracted and focused by the convex lens array 110 to the heat absorbing medium flowing in the heat collecting tubes 12. And heat conduction fin 15 parcel thermal-collecting tube 12, fix the lower surface at metal sheet 11 afterwards, its periphery is enclosed by welding short to curb plate 16 and the long to curb plate 17 at metal sheet 11 edge, forms sealed cavity structure to form the intermediate layer of vacuum or gas such as filling argon, helium between convex lens, avoid water vapor atomization to bring the influence to convex lens's transmissivity, usable evacuation pipe 18 carries out the air pumping operation, guarantees the vacuum state between the convex lens in convex lens array 110.
Example 3
Basically like embodiment 2, in order to further improve the compatibility and adaptability of the whole system, the heat storage device II4 is further included in this embodiment, the inlet of the heat storage device II4 is communicated with the steam generator 3, and the outlet of the heat storage device II4 is communicated with the inlet of the energy collecting device 1. It is noted that, the temperature of the medium stored in the heat storage device II4 is relatively lower than that of the heat storage device I2, firstly, the temperature of the medium in the steam generator 3 after the medium completes the heat energy transfer becomes relatively lower, and secondly, the low-temperature liquid generated by the condenser 6 enters into the steam generator 3, so that the low-temperature medium exists in the steam generator 3 after the steam generation is completed, and therefore, the heat storage device I2 is provided to communicate the steam generator 3 and the energy collecting device 1, so that the medium at low temperature in the steam generator 3 can enter into the energy collecting device 1 again through the heat storage device I2 to absorb heat energy again, thereby performing the cycle of the subsequent steps. The arrangement of the heat storage device II4 further increases the cyclicity of the whole system, so that resources are recycled, and the cost is greatly saved. Further, between gather between device 1 and heat-retaining device I2, all be provided with temperature-detecting device between steam generator 3 and the heat-retaining device II4, temperature-detecting device can be temperature sensor, temperature sensor's setting can be in time and clear understanding from gathering device 1 exit, gather the medium temperature of device 1 entrance, the operating personnel of being convenient for in time know and corresponding carry out relevant operation, the security and the transparency of whole process have been increased.
Meanwhile, in the embodiment, the water electrolysis hydrogen production device 7 is respectively communicated with the oxygen tank 8 and the hydrogen tank 9, and the oxygen tank 8 and the hydrogen tank 9 respectively store oxygen and hydrogen. The hydrogen tank 9 is connected with the hydrogen generator 10, and when necessary, hydrogen in the hydrogen tank 9 enters the hydrogen generator 10 and drives the hydrogen generator 10 to generate current output through the processes of air suction, compression, explosion and exhaust, and finally the hydrogen generator is used in an electric energy supply network. Considering that the solar thermal energy is influenced by various meteorological factors such as day and night alternation, cloudy, sunny, rainy and snowy and the like, the device has the characteristic of intermittence, so that the device 7 for producing hydrogen by water electrolysis is arranged to produce hydrogen to be stored in the hydrogen tank 9, and the hydrogen is used as combustion to be conveyed to the hydrogen generator 10 to produce electric energy to be conveyed to a power grid in the evening and rainy days, thereby increasing the electric energy production way without extra cost investment, and avoiding the phenomenon that the electric energy cannot be produced when the energy collecting device 1 cannot work. And furthermore, the water electrolysis hydrogen production device 7 improves the flexibility of the whole system, can generate power according to the requirement of a power grid, has better impact, flexibility and adaptability to the power grid, finally converts solar heat energy into partial hydrogen which is stored through the hydrogen tank 9, and compared with the existing hot molten salt energy storage mode, the water electrolysis hydrogen production device avoids a large amount of heat energy loss and loss in the storage process, and solves the problem of heat preservation and heat insulation of the traditional hot molten salt storage tank with large investment cost. The embodiment is used for generating power completely with the sunlight heat energy of whole collections, and the unnecessary electric power that the electric wire netting can't be absorbed is used for supplying water electrolysis hydrogen plant 7 electrolysis water and prepares hydrogen, with the mode stored energy of storing hydrogen fuel, has avoided heat energy loss, has improved whole light and heat power generation system's efficiency.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a utilize hydrogen energy storage solar photothermal power system of convex lens array which characterized in that: the solar energy collecting device comprises an energy collecting device (1) for collecting heat of sunlight by utilizing a convex lens, wherein an outlet of the energy collecting device (1), a heat storage device I (2), a steam generator (3) and a steam turbine generator (5) are sequentially connected, an outlet of the steam turbine generator (5) is respectively connected with a power grid and a water electrolysis hydrogen production device (7), the steam turbine generator (5) is also communicated with an inlet of a condenser (6), and an outlet of the condenser (6) is communicated with the steam generator (3).
2. The hydrogen energy storage solar photo-thermal power generation system utilizing the convex lens array according to claim 1, characterized in that: the energy gathering device (1) comprises a convex lens array (110) formed by a plurality of convex lenses which are connected in series or in parallel, a metal plate (11) for absorbing heat energy of the convex lens array (110), the upper surface of the metal plate (11) is arranged on a focal plane of the convex lens array (110), a heat collecting pipe (12) is arranged on the lower surface of the metal plate (11), a medium flow channel is arranged on the heat collecting pipe (12), a heat absorbing medium is arranged in the medium flow channel, and an outlet of the medium flow channel is communicated with an inlet of the heat storage device I (2).
3. The system of claim 2, wherein the system comprises a convex lens array, a hydrogen storage solar photo-thermal power generation system and a solar photo-thermal power generation system, wherein the convex lens array comprises: the convex lens array (110) is connected with the metal plate (11) through an adjusting device, and the upper surface of the metal plate (11) is overlapped with a focal plane formed by condensing light of the convex lens array (110) through the adjusting device.
4. The hydrogen energy storage solar photo-thermal power generation system utilizing the convex lens array as claimed in claim 1 or 2, wherein: a glass cover plate (111) is further arranged above the convex lens array (110), and the glass cover plate (111) is connected with the metal plate (11).
5. The system of claim 2, wherein the system comprises a convex lens array, a hydrogen storage solar photo-thermal power generation system and a solar photo-thermal power generation system, wherein the convex lens array comprises: the lower surface of the metal plate (11) is also provided with heat conducting fins (15), and the heat conducting fins (15) are arranged on the periphery of the heat collecting pipe (12).
6. The hydrogen energy storage solar photo-thermal power generation system utilizing the convex lens array according to claim 1, characterized in that: still include heat-retaining device II (4), the entry and the steam generator (3) intercommunication of heat-retaining device II (4), the export of heat-retaining device II (4) and the entry intercommunication of gathering energy device (1).
7. The hydrogen energy storage solar photo-thermal power generation system utilizing the convex lens array according to claim 6, wherein: temperature detection devices are arranged between the energy collecting device (1) and the heat storage device I (2) and between the steam generator (3) and the heat storage device II (4).
8. The system according to claim 1, wherein the system comprises: the water electrolysis hydrogen production device (7) is respectively communicated with the oxygen tank (8) and the hydrogen tank (9), and the hydrogen tank (9) is connected with the hydrogen generator (10).
CN202210849320.9A 2022-07-19 2022-07-19 Hydrogen energy storage solar photo-thermal power generation system utilizing convex lens array Pending CN115059595A (en)

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US20050279095A1 (en) * 2003-01-21 2005-12-22 Goldman Arnold J Hybrid generation with alternative fuel sources
CN101794155A (en) * 2009-12-31 2010-08-04 陕西科技大学 Sunlight signal acquiring devices in high-precision tracking system
US20130219889A1 (en) * 2010-09-13 2013-08-29 Guangdong Fuxing Food Machinery Co., Ltd. Ground high-temperature high-efficiency solar steam electricity-generating device
CN106168199A (en) * 2016-08-30 2016-11-30 高振刚 A kind of house hydrogen energy source system and the Stirling autologous generating conjuncted machine of heat pump
CN114031143A (en) * 2021-11-23 2022-02-11 河南科技大学 Unattended industrial waste liquid treatment and water-hydrogen-electricity cogeneration system and method
CN114440475A (en) * 2022-01-25 2022-05-06 上海毅亚德科技有限公司 Solar photo-thermal utilization energy-gathering module with convex lens array

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050279095A1 (en) * 2003-01-21 2005-12-22 Goldman Arnold J Hybrid generation with alternative fuel sources
CN101794155A (en) * 2009-12-31 2010-08-04 陕西科技大学 Sunlight signal acquiring devices in high-precision tracking system
US20130219889A1 (en) * 2010-09-13 2013-08-29 Guangdong Fuxing Food Machinery Co., Ltd. Ground high-temperature high-efficiency solar steam electricity-generating device
CN106168199A (en) * 2016-08-30 2016-11-30 高振刚 A kind of house hydrogen energy source system and the Stirling autologous generating conjuncted machine of heat pump
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