CN216788625U - Solar energy conversion energy storage power supply system - Google Patents
Solar energy conversion energy storage power supply system Download PDFInfo
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- CN216788625U CN216788625U CN202220078570.2U CN202220078570U CN216788625U CN 216788625 U CN216788625 U CN 216788625U CN 202220078570 U CN202220078570 U CN 202220078570U CN 216788625 U CN216788625 U CN 216788625U
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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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Abstract
The utility model discloses a solar energy conversion energy storage power supply system, which relates to the technical field of generating mechanical work by using solar energy, and comprises: the system comprises a heat collection unit, a circulation unit and a medium supplement unit, wherein the circulation unit comprises a first gas-liquid separator, an expander, a condenser and a liquid storage tank, the first gas-liquid separator, the expander, the condenser and the liquid storage tank are sequentially communicated to form a closed organic Rankine cycle, and the expander is used for driving a generator; the heat collecting unit is used for absorbing solar energy, converting the solar energy into heat energy and storing the heat energy, wherein the heat energy is used for converting the liquid working medium in the first gas-liquid separator into a gaseous working medium; and the medium replenishing unit is used for converting the liquid working medium in the liquid storage tank into the gaseous working medium to replenish the first gas-liquid separator. The solar energy heat collector is used for storing heat which is used for promoting the organic Rankine cycle, and meanwhile, the solar energy heat collector is used for storing heat to accelerate the cycle at the peak of power utilization.
Description
Technical Field
The utility model relates to the technical field of generating mechanical power by utilizing solar energy, in particular to a solar energy conversion energy storage power supply system.
Background
In recent years, under the dual pressure of energy and environment and the support of policies in various regions, the search for alternative new energy has become a research hotspot for many years, and researchers have conducted a great deal of research on new energy such as solar energy, geothermal energy, tidal energy, wind energy, biomass energy and the like. The development of renewable energy sources is supported by policies in many countries of the world. The modes of converting solar energy into electric energy mainly include photothermal power generation and photovoltaic power generation.
The basic organic matter Rankine cycle system and the cycle process mainly comprise four processes of adiabatic expansion, constant-pressure cooling, adiabatic pressurization and constant-pressure heating, liquid organic working medium in a liquid storage tank in the basic organic Rankine cycle is pressurized and conveyed by a working medium pump, then high-temperature heat energy carried by heat conduction oil is absorbed in a steam generator to be vaporized, high-temperature and high-pressure organic working medium gas enters an expander to do work to drive the generator to generate electricity and output electric energy, then low-pressure working medium steam enters a condenser to be cooled and condensed into liquid, the liquid is returned to the liquid storage tank, and then the liquid is pumped and pressurized by the working medium pump again to complete a cycle.
However, the traditional power grid at present mostly uses coal for power generation, the consumption of fossil fuels such as coal, petroleum and natural gas is reduced, and the emission of the burned fossil fuels is one of the main causes of haze.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a solar energy conversion energy storage power supply system, which utilizes a medium-low temperature solar heat collector to store heat, the heat is used for propelling an organic Rankine cycle, and simultaneously, the solar heat collector is used for storing heat to accelerate the organic Rankine cycle at a power consumption peak, so that the energy utilization is efficient and pollution-free.
In order to achieve the purpose, the utility model can adopt the following technical scheme:
a solar energy conversion, energy storage, and power supply system, comprising: a heat collecting unit, a circulating unit and a medium supplementing unit, wherein,
the circulating unit comprises a first gas-liquid separator, an expander, a condenser and a liquid storage tank, the first gas-liquid separator, the expander, the condenser and the liquid storage tank are sequentially communicated to form a closed organic Rankine cycle, and the expander is used for driving a generator;
the heat collection unit is used for absorbing solar energy, converting the solar energy into heat energy and storing the heat energy, wherein the heat energy is used for converting the liquid working medium in the first gas-liquid separator into a gaseous working medium; and the number of the first and second groups,
the medium supplementing unit is used for converting the liquid working medium in the liquid storage tank into gaseous working medium to supplement the first gas-liquid separator.
The solar energy conversion energy storage power supply system further comprises the heat collecting unit, the first solar heat collector, the heat accumulator, the first working medium pump, the first heat exchanger, the second working medium pump, the first valve and the second valve, wherein,
the first solar heat collector, the heat accumulator and the first working medium pump are sequentially connected through a pipeline to form a heat collection first loop; the heat accumulator, the first heat exchanger and the second working medium pump are sequentially connected through a pipeline to form a heat collection second loop; the first heat exchanger, the first valve, the second valve and the first gas-liquid separator are connected in sequence through pipelines to form a third heat collection loop,
the heat energy stored in the heat collection first loop is absorbed by the heat accumulator through the heat collection second loop, and the liquid working medium in the first gas-liquid separator is converted into the gaseous working medium by the heat energy of the first heat exchanger through the heat collection third loop.
The solar energy conversion energy storage power supply system further comprises a second solar heat collector, a second heat exchanger, a third working medium pump, a third valve, a fourth valve and the second gas-liquid separator, wherein,
the second solar heat collector, the second heat exchanger and the third working medium pump are sequentially connected through pipelines to form a supplementary first loop, the second heat exchanger, the third valve, the fourth valve and the second gas-liquid separator are sequentially connected through pipelines to form a supplementary second loop,
the supplementary second loop converts the liquid working medium in the second gas-liquid separator into a gaseous working medium by using the heat energy of the second heat exchanger, and the gaseous working medium is supplemented to the first gas-liquid separator.
The solar energy conversion energy storage power supply system is characterized in that a fifth valve is arranged between the liquid storage tank and the second gas-liquid separator, and the fifth valve is used for controlling liquid working medium in the liquid storage tank to enter the medium supplementing unit.
The solar energy conversion energy storage power supply system further comprises a compressor and a sixth valve, wherein,
the sixth valve is arranged at a gas outlet of the second gas-liquid separator and is used for controlling the gaseous working medium of the second gas-liquid separator to enter the first gas-liquid separator;
the compressor is arranged in a pipeline between the first gas-liquid separator and the second gas-liquid separator and is used for compressing gaseous working medium to enter the first gas-liquid separator.
The solar energy conversion energy storage power supply system further comprises a photovoltaic power generation device, and the photovoltaic power generation device is connected with the compressor.
The solar energy conversion energy storage power supply system is characterized in that a fourth working medium pump is arranged between the first gas-liquid separator and the expansion machine.
The solar energy conversion energy storage power supply system is characterized in that a fifth working medium pump is arranged between the first gas-liquid separator and the liquid storage tank.
The solar energy conversion energy storage power supply system is characterized in that a seventh valve is arranged between the fifth working medium pump and the liquid storage tank.
The solar energy conversion energy storage power supply system further comprises any one of R133, R134a, R245fa and R245 ca.
Compared with the prior art, the utility model has the beneficial effects that: the utility model fully utilizes middle-low temperature solar thermal power generation, the organic Rankine cycle has great flexibility and high safety, simultaneously the system is simple, the operation control is simple and convenient, and the heat source with lower temperature can be efficiently utilized to convert the heat energy carried by the heat source into work, the solar heat collector and the photovoltaic power generation device generate more heat energy and electric energy during the electricity consumption peak section in the daytime, the working medium circulation of the organic Rankine cycle can be accelerated, the power generation efficiency is improved, the electricity consumption requirement of customers is met, in the electricity consumption valley section at night, only basic organic Rankine cycle is needed to meet the electricity consumption requirement of customers, meanwhile, the utility model also utilizes the heat accumulator to store heat, so as to prepare for temporary work requirement and improve the energy utilization efficiency, further, if the condenser or the heat accumulator of the utility model is connected into a cold water pool to carry out heat exchange, hot water supply can be provided for users, forming a cogeneration system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a solar energy conversion, energy storage and power supply system according to an embodiment of the present invention.
Wherein, 1, a first solar heat collector; 2. a first working medium pump; 3. a second working medium pump; 4. a first valve; 5. a second valve; 6. a fourth working medium pump; 7. a generator; 8. a photovoltaic power generation device; 9. a second solar collector; 10. a third working medium pump; 11. a third valve; 12. a fourth valve; 13. a sixth valve; 14. a fifth valve; 15. a seventh valve; 16. and a fifth working medium pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example (b):
it should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a solar energy conversion, energy storage and power supply system according to an embodiment of the present invention. The utility model provides a solar energy conversion energy storage power supply system, which utilizes a medium-low temperature solar heat collector to store heat which is used for propelling an organic Rankine cycle, and utilizes the solar heat collector to store heat to accelerate the organic Rankine cycle at a power utilization peak.
A solar energy conversion, energy storage, and power supply system, comprising: the solar heat collector comprises a heat collecting unit, a circulating unit and a medium supplementing unit, wherein the circulating unit comprises a first gas-liquid separator, an expander, a condenser and a liquid storage tank, the first gas-liquid separator, the expander, the condenser and the liquid storage tank are sequentially communicated to form a closed organic Rankine cycle, and the expander is used for driving a generator 7; the heat collection unit is used for absorbing solar energy, converting the solar energy into heat energy and storing the heat energy, wherein the heat energy is used for converting the liquid working medium in the first gas-liquid separator into a gaseous working medium; and the medium supplementing unit is used for converting the liquid working medium in the liquid storage tank into the gaseous working medium to supplement the first gas-liquid separator.
As an optional implementation manner, in some embodiments, the heat collecting unit includes a first solar thermal collector 1, a heat accumulator, a first working medium pump 2, a first heat exchanger, a second working medium pump 3, a first valve 4, and a second valve 5, where the first solar thermal collector 1, the heat accumulator, and the first working medium pump 2 are sequentially connected by a pipeline to form a heat collecting first loop; the heat accumulator, the first heat exchanger and the second working medium pump 3 are connected in sequence through pipelines to form a heat collection second loop; the first heat exchanger, the first valve 4, the second valve 5 and the first gas-liquid separator are sequentially connected through pipelines to form a heat collection third loop, the heat collection second loop absorbs and collects heat energy stored in the heat collection first loop through the heat accumulator, and the heat collection third loop converts liquid working media in the first gas-liquid separator into gaseous working media by utilizing the heat energy of the first heat exchanger. Further, a fourth medium pump 6 is provided between the first gas-liquid separator and the expander. Further, a fifth working medium pump 16 is arranged between the first gas-liquid separator and the liquid storage tank.
For example, the first solar heat collector 1 may be a common parabolic trough solar heat collector, and the first heat exchanger is an energy-saving device for transferring heat between two or more fluids at different temperatures, and is a device for transferring heat from a fluid at a higher temperature to a fluid at a lower temperature, so that the temperature of the fluid reaches an index specified by a process to meet the requirements of process conditions, and is one of main devices for improving the energy utilization rate. The heat accumulator is also called as a steam heat accumulator and is a steam container taking water as a heat storage medium. The device is high-efficiency energy-saving emission-reduction equipment for improving the use reliability and the economical efficiency of steam. The steam heat accumulator has wide application and can be applied to industries such as steel, metallurgy, textile printing and dyeing, chemical fiber, pulping and papermaking, wine making, pharmacy, food processing, power generation and the like. The first working medium pump 2, the second working medium pump 3, the fourth working medium pump 6 and the fifth working medium pump 16 adopt conventional liquid pumps in the prior art to accelerate the working medium circulation efficiency. The first valve 4 and the second valve 5 are preferably electromagnetic one-way valves in the prior art, and the opening and the closing of the valves are controlled remotely. In the embodiment, the first solar heat collector 1 generates a medium-low temperature heat source and stores heat in the heat accumulator, the system stores heat by using the heat accumulator so as to simultaneously improve energy utilization efficiency for temporary work, liquid working medium of the first gas-liquid separator enters the first heat exchanger and is converted into gaseous working medium, the gaseous working medium with high temperature and high pressure enters the expander to do work to drive the generator 7 to generate electricity and output electric energy, then low-pressure working medium steam enters the condenser to be cooled and condensed into liquid and returns to the liquid storage tank, the first valve 4 and the second valve 5 are used for controlling the on-off of a pipeline, and a one-way valve is adopted to ensure the flow direction of the working medium. In the embodiment, the organic Rankine cycle is promoted by using the heat of the first solar heat collector 1, and the clean renewable energy does not generate pollution, so that the development direction of clean new energy is met, and the energy utilization efficiency is improved.
As an optional implementation manner, in some embodiments, the medium supplementing unit includes a second solar heat collector 9, a second heat exchanger, a third working medium pump 10, a third valve 11, a fourth valve 12, and a second gas-liquid separator, where the second solar heat collector 9, the second heat exchanger, and the third working medium pump 10 are sequentially connected by a pipeline to form a first supplementing loop, the second heat exchanger, the third valve 11, the fourth valve 12, and the second gas-liquid separator are sequentially connected by a pipeline to form a second supplementing loop, the second supplementing loop converts the liquid working medium in the second gas-liquid separator into a gaseous working medium by using heat energy of the second heat exchanger, and the gaseous working medium is supplemented to the first gas-liquid separator. For example, the second solar heat collector 9 may be a common parabolic trough solar heat collector, and the second heat exchanger is an energy-saving device for transferring heat between two or more fluids at different temperatures, and is a device for transferring heat from a fluid at a higher temperature to a fluid at a lower temperature, so that the temperature of the fluid reaches an index specified by a process to meet the requirements of process conditions, and is one of main devices for improving the energy utilization rate. The third working medium pump 10 adopts a conventional liquid pump in the prior art, and the third valve 11 and the fourth valve 12 are preferably electromagnetic one-way valves in the prior art and are opened and closed by remote control of the valves. In the embodiment, during the peak period of power consumption in the daytime, the solar thermal collector generates more heat energy, the circulation of the working medium of the organic Rankine cycle can be accelerated, the power generation efficiency is improved, the power consumption requirement of customers is met, and during the valley period of power consumption at night, the power consumption requirement of customers can be met only through basic organic Rankine cycle.
As an optional implementation manner, in the above embodiment, the medium supplementing unit further includes a compressor and a sixth valve 13, where the sixth valve 13 is disposed at the gas outlet of the second gas-liquid separator, and is used for controlling the gaseous working medium of the second gas-liquid separator to enter the first gas-liquid separator; the compressor is arranged in a pipeline between the first gas-liquid separator and the second gas-liquid separator and is used for compressing gaseous working media to enter the first gas-liquid separator. Further, the medium supplementing unit further comprises a photovoltaic power generation device 8, the photovoltaic power generation device 8 is connected with the compressor, wherein the photovoltaic power generation device 8 is a common device in the prior art. In this embodiment, during the peak of power consumption in daytime, the photovoltaic power generation device 8 generates electric energy to drive the compressor, and the gaseous working medium in the second gas-liquid separator enters the first gas-liquid separator under the drive of the compressor, so as to improve the power generation efficiency.
As an alternative, in some embodiments, a fifth valve 14 is disposed between the reservoir and the second gas-liquid separator, and the fifth valve 14 is used for controlling the liquid working medium in the reservoir to enter the medium replenishing unit. In this embodiment, at the valley period of night, the customer power demand can be satisfied only by the basic organic rankine cycle, and therefore, the operation of the medium supplement unit can be closed by the fifth valve 14.
As an alternative, in some embodiments, a seventh valve 15 is provided between the fifth working medium pump 16 and the reservoir.
As an alternative implementation, in certain embodiments, the working medium comprises any one of R133, R134a, R245fa, R245 ca. Illustratively, suitable evaporation and condensation temperatures, high power cycle efficiency, good heat transfer properties, environmental protection, non-toxicity, non-flammability, and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (10)
1. A solar energy conversion, energy storage and power supply system, comprising: a heat collecting unit, a circulating unit and a medium supplementing unit, wherein,
the circulating unit comprises a first gas-liquid separator, an expander, a condenser and a liquid storage tank, the first gas-liquid separator, the expander, the condenser and the liquid storage tank are sequentially communicated to form a closed organic Rankine cycle, and the expander is used for driving a generator;
the heat collection unit is used for absorbing solar energy, converting the solar energy into heat energy and storing the heat energy, wherein the heat energy is used for converting the liquid working medium in the first gas-liquid separator into a gaseous working medium; and the number of the first and second groups,
the medium supplementing unit is used for converting the liquid working medium in the liquid storage tank into gaseous working medium to supplement the first gas-liquid separator.
2. The solar energy conversion, energy storage and power supply system of claim 1, wherein the heat collection unit comprises a first solar heat collector, a heat accumulator, a first working medium pump, a first heat exchanger, a second working medium pump, a first valve and a second valve,
the first solar heat collector, the heat accumulator and the first working medium pump are sequentially connected through a pipeline to form a heat collection first loop; the heat accumulator, the first heat exchanger and the second working medium pump are sequentially connected through a pipeline to form a heat collection second loop; the first heat exchanger, the first valve, the second valve and the first gas-liquid separator are connected in sequence through pipelines to form a third heat collection loop,
the heat energy stored in the heat collection first loop is absorbed by the heat accumulator through the heat collection second loop, and the liquid working medium in the first gas-liquid separator is converted into the gaseous working medium by the heat energy of the first heat exchanger through the heat collection third loop.
3. The solar energy conversion, energy storage and power supply system of claim 1, wherein the medium supplementing unit comprises a second solar heat collector, a second heat exchanger, a third working medium pump, a third valve, a fourth valve and a second gas-liquid separator,
the second solar heat collector, the second heat exchanger and the third working medium pump are sequentially connected through pipelines to form a supplementary first loop, the second heat exchanger, the third valve, the fourth valve and the second gas-liquid separator are sequentially connected through pipelines to form a supplementary second loop,
the supplementary second loop converts the liquid working medium in the second gas-liquid separator into a gaseous working medium by using the heat energy of the second heat exchanger, and the gaseous working medium is supplemented to the first gas-liquid separator.
4. The solar energy conversion, energy storage and power supply system according to claim 3, wherein a fifth valve is disposed between the liquid storage tank and the second gas-liquid separator, and the fifth valve is used for controlling a liquid working medium in the liquid storage tank to enter the medium supplementing unit.
5. The solar-energy conversion, energy storage and power supply system of claim 3, wherein said media supplement unit further comprises a compressor and a sixth valve, wherein,
the sixth valve is arranged at a gas outlet of the second gas-liquid separator and is used for controlling the gaseous working medium of the second gas-liquid separator to enter the first gas-liquid separator;
the compressor is arranged in a pipeline between the first gas-liquid separator and the second gas-liquid separator and is used for compressing gaseous working medium to enter the first gas-liquid separator.
6. The solar-energy conversion, energy storage and power supply system of claim 5 wherein the medium replenishing unit further comprises a photovoltaic power generation device, the photovoltaic power generation device being connected to the compressor.
7. The solar energy conversion, energy storage and power supply system of claim 1, wherein a fourth working medium pump is disposed between the first gas-liquid separator and the expander.
8. The solar energy conversion, energy storage and power supply system of claim 1, wherein a fifth working medium pump is disposed between the first gas-liquid separator and the liquid storage tank.
9. The solar energy conversion, energy storage and power supply system of claim 8, wherein a seventh valve is disposed between the fifth working medium pump and the liquid storage tank.
10. A solar energy conversion, energy storage and power supply system according to any one of claims 1 to 9 wherein the working medium comprises any one of R133, R134a, R245fa, R245 ca.
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| CN115681040A (en) * | 2022-11-10 | 2023-02-03 | 北京市煤气热力工程设计院有限公司 | Energy comprehensive utilization system and method for photovoltaic photo-thermal coupling differential pressure power generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115681040A (en) * | 2022-11-10 | 2023-02-03 | 北京市煤气热力工程设计院有限公司 | Energy comprehensive utilization system and method for photovoltaic photo-thermal coupling differential pressure power generation |
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