CN218717008U - Solar low-temperature double-tank power generation system - Google Patents
Solar low-temperature double-tank power generation system Download PDFInfo
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- CN218717008U CN218717008U CN202222805649.3U CN202222805649U CN218717008U CN 218717008 U CN218717008 U CN 218717008U CN 202222805649 U CN202222805649 U CN 202222805649U CN 218717008 U CN218717008 U CN 218717008U
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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
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- 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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Abstract
The utility model discloses a solar low-temperature double-tank power generation system, which comprises an ORC expansion generator, a condenser, a heat exchange device, a solar heat collector, a medium-temperature heat storage tank and a low-temperature heat storage tank; the ORC expansion generator is connected with the condenser through a first working medium pipeline, the condenser is connected with the heat exchange device through a second working medium pipeline, a working medium pump is arranged on the second working medium pipeline, and the heat exchange device is connected with the ORC expansion generator through a third working medium pipeline; the heat exchange device is connected with the solar heat collector through a first heat collecting pipeline and a second heat collecting pipeline respectively; the medium-temperature heat storage tank is connected with the first heat collection pipeline through a medium-temperature liquid inlet pipeline and a medium-temperature liquid outlet pipeline respectively; and the low-temperature heat storage tank is connected with the second heat collection pipeline through a low-temperature liquid inlet pipeline and a low-temperature liquid outlet pipeline respectively. The advantages are that: the system can run uninterruptedly when the sunlight irradiates or does not irradiate, and continuous power generation is realized. The system investment and the operation cost can be greatly reduced.
Description
Technical Field
The utility model relates to a new forms of energy technical field especially relates to a solar energy low temperature double-tank power generation system.
Background
Solar energy is an inexhaustible green new energy, and a photo-thermal power generation technology utilizing the solar energy is a pure green pollution-free power generation technology. The solar high-temperature photo-thermal power generation technology has high efficiency, but has high requirements on various items of equipment, and after the high-temperature heat collection technology and the high-temperature heat storage technology are combined, the input cost and the operation and maintenance cost of the whole system are greatly improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solar energy low temperature double-tank power generation system to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a solar low-temperature double-tank power generation system comprises an ORC expansion generator, a condenser, a heat exchange device, a solar heat collector, a medium-temperature heat storage tank and a low-temperature heat storage tank; the ORC expansion generator is connected with the condenser through a first working medium pipeline, the condenser is connected with the heat exchange device through a second working medium pipeline, a working medium pump is arranged on the second working medium pipeline, and the heat exchange device is connected with the ORC expansion generator through a third working medium pipeline; the heat exchange device is connected with the solar heat collector through a first heat collecting pipeline and a second heat collecting pipeline respectively; the medium-temperature heat storage tank is connected with the first heat collection pipeline through a medium-temperature liquid inlet pipeline and a medium-temperature liquid outlet pipeline respectively; and the low-temperature heat storage tank is connected with the second heat collection pipeline through a low-temperature liquid inlet pipeline and a low-temperature liquid outlet pipeline respectively.
Preferably, an inlet main valve is arranged on the first heat collecting pipe; in the flow direction of the heat medium in the first heat collection pipe, the connection point of the medium temperature liquid inlet pipe and the first heat collection pipe is located at the upstream of the inlet main valve, and the connection point of the medium temperature liquid outlet pipe and the first heat collection pipe is located at the downstream of the inlet main valve.
Preferably, the medium-temperature liquid outlet pipeline is sequentially provided with a medium-temperature pump and a medium-temperature tank outlet valve along the flow direction of the internal heat medium.
Preferably, an outlet main valve and a heat medium circulating pump are sequentially arranged on the second heat collecting pipeline along the flow direction of the heat medium in the second heat collecting pipeline; in the flowing direction of the heat medium in the second heat collection pipe, the connection point of the low-temperature liquid inlet pipe and the second heat collection pipe is located at the upstream of the outlet main valve, and the connection point of the low-temperature liquid outlet pipe and the second heat collection pipe is located at the downstream of the heat medium circulating pump.
Preferably, a low-temperature tank inlet valve is arranged on the low-temperature liquid inlet pipe.
Preferably, a cryogenic pump and a cryogenic tank outlet valve are sequentially arranged on the cryogenic liquid outlet pipeline along the flow direction of the internal heat medium.
Preferably, the heat exchange device comprises an evaporator and a preheater, and a fourth working medium pipeline and a third heat collection pipeline are connected between the evaporator and the preheater; the fourth working medium pipeline is communicated with the third working medium pipeline and the second working medium pipeline through an evaporator and a preheater respectively; the third heat collecting pipe is communicated with the first heat collecting pipe and the second heat collecting pipe through an evaporator and a preheater respectively.
Preferably, the power generation system further comprises a cooling tower, and the water inlet and the water outlet of the condenser are respectively connected with the cooling tower through a water inlet pipeline and a water outlet pipeline.
Preferably, a cooling water pump is arranged on the water inlet pipeline.
The utility model has the advantages that: 1. the medium-temperature heat storage tank and the low-temperature heat storage tank are used in parallel, the low-temperature heat storage tank releases low-temperature heat medium under the condition of illumination, and the medium-temperature heat storage tank stores the heated heat medium; under the condition of no sunlight, the medium-temperature heat storage tank releases the high-temperature heat medium, and the low-temperature heat storage tank stores the low-temperature heat medium, so that the system can be ensured to run uninterruptedly under the conditions of sunlight irradiation and no sunlight irradiation, and continuous power generation is realized. 2. The solar energy is effectively converted into electric energy, and energy utilization is realized. 3. The heat medium, the organic working medium and the cooling water are recycled, and the sustainable operation of the system is ensured. 4. The system investment and the operation cost can be greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a power generation system in an embodiment of the present invention.
In the figure: 1. a solar heat collector; 2. a medium temperature heat storage tank; 3. a low temperature heat storage tank; 4. a medium temperature pump; 5. a cryopump; 6. a heat medium circulating pump; 7. a working medium pump; 8. a preheater; 9. an evaporator; 10. an ORC expansion generator; 11. a condenser; 12. a cooling tower; 13. a cooling water pump; 14. an inlet main valve; 15. an outlet main valve; 16. a cryogenic tank outlet valve; 17. an outlet valve of the intermediate temperature tank; 18. a cryogenic tank inlet valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
As shown in fig. 1, the present invention includes a solar low-temperature dual-tank power generation system, which includes an ORC expansion generator 10, a condenser 11, a heat exchange device, a solar heat collector 1, a medium-temperature heat storage tank 2, and a low-temperature heat storage tank 3; the ORC expansion generator 10 is connected with a condenser 11 through a first working medium pipeline, the condenser 11 is connected with a heat exchange device through a second working medium pipeline, a working medium pump 7 is arranged on the second working medium pipeline, and the heat exchange device is connected with the ORC expansion generator 10 through a third working medium pipeline; the heat exchange device is connected with the solar heat collector 1 through a first heat collecting pipeline and a second heat collecting pipeline respectively; the medium-temperature heat storage tank 2 is connected with the first heat collection pipeline through a medium-temperature liquid inlet pipeline and a medium-temperature liquid outlet pipeline respectively; the low-temperature heat storage tank 3 is connected with the second heat collection pipeline through a low-temperature liquid inlet pipeline and a low-temperature liquid outlet pipeline respectively.
In this embodiment, an inlet main valve 14 is disposed on the first heat collecting pipe; in the flow direction of the heat medium in the first heat collecting pipe, the connection point of the medium temperature liquid inlet pipe and the first heat collecting pipe is located at the upstream of the inlet main valve 14, and the connection point of the medium temperature liquid outlet pipe and the first heat collecting pipe is located at the downstream of the inlet main valve 14.
In this embodiment, the medium temperature pump 4 and the medium temperature tank outlet valve 17 are sequentially arranged on the medium temperature liquid outlet pipeline along the flow direction of the internal heat medium.
In this embodiment, the second heat collecting pipe is provided with an outlet main valve 15 and a heat medium circulating pump 6 in sequence along the flow direction of the heat medium inside the second heat collecting pipe; in the flow direction of the heating medium in the second heat collection pipe, the connection point of the low-temperature liquid inlet pipe and the second heat collection pipe is located upstream of the outlet main valve 15, and the connection point of the low-temperature liquid outlet pipe and the second heat collection pipe is located downstream of the heating medium circulating pump 6.
In this embodiment, the low-temperature inlet pipe is provided with a low-temperature tank inlet valve 18.
In this embodiment, the low-temperature liquid outlet pipeline is sequentially provided with a low-temperature pump 5 and a low-temperature tank outlet valve 16 along the flow direction of the internal heat medium.
In this embodiment, the heat exchanging device includes an evaporator 9 and a preheater 8, and a fourth working medium pipe and a third heat collecting pipe are connected between the evaporator 9 and the preheater 8; the fourth working medium pipeline is communicated with the third working medium pipeline and the second working medium pipeline through an evaporator 9 and a preheater 8 respectively; the third heat collecting pipe is communicated with the first heat collecting pipe and the second heat collecting pipe through an evaporator 9 and a preheater 8, respectively.
In this embodiment, the power generation system further includes a cooling tower 12, and the water inlet and the water outlet of the condenser 11 are connected to the cooling tower 12 through a water inlet pipe and a water outlet pipe, respectively.
In this embodiment, the water inlet pipe is provided with a cooling water pump 13.
In this embodiment, the power generation system mainly includes four parts, which are an ORC power generation system, a heat collection system, a heat storage system, and a cooling system. The following description is made for each of these four systems.
1. ORC power generation system
The ORC power generation system comprises an ORC expansion generator 10, a heat exchange device, a corresponding working medium pipeline and a working medium pump 7 arranged on the second working medium pipeline. Working media flow in the first working medium pipeline, the second working medium pipeline, the third working medium pipeline and the fourth working medium pipeline, the working medium pump 7 drives organic working media in the working medium pipelines to sequentially pass through the preheater 8 and the evaporator 9 to become gaseous organic working media, the gaseous organic working media enter the ORC expansion generator 10 to do work, the ORC expansion generator 10 supplies power outwards, then the gaseous organic working media enter the condenser 11 to be condensed into liquid organic working media to return to the working medium pump 7, the liquid organic working media are conveyed to the preheater 8 and the evaporator 9 through the working medium pump 7 again, and thermal circulation of the organic working media is achieved.
2. Heat collecting system
The heat collecting system comprises a solar heat collector 1, corresponding heat collecting pipelines and a heat medium pump arranged on the second heat collecting pipeline, wherein heat medium flows in the first heat collecting pipeline and the second heat collecting pipeline, and the solar heat collector 1 provides heat for the heat medium.
3. Heat storage system
The heat storage system comprises a medium-temperature heat storage tank 2, a low-temperature heat storage tank 3, corresponding pipelines, valves, a medium-temperature pump 4 and a low-temperature pump 5. When the medium temperature heat storage tank 2 is in a non-sunshine mode, the heat medium stored in the medium temperature heat storage tank 2 is changed into a low temperature heat medium after heat exchange is realized through the heat exchanger and the preheater 8, and the low temperature heat medium enters the low temperature heat storage tank 3 to be stored.
The low-temperature heat storage tank 3 feeds the low-temperature heat medium in the tank into the solar heat collector 1 for heating under the condition of sunshine, and the low-temperature heat storage tank is stored in the medium-temperature heat storage tank 2 after being heated, and when the low-temperature heat storage tank is in a non-sunshine mode, the heat medium flowing out of the medium-temperature heat storage tank 2 flows into the low-temperature heat storage tank 3 for storage after being cooled.
The medium-temperature heat storage tank 2 stores heat medium under the condition of sunshine, the low-temperature heat storage tank 3 stores heat medium under the condition of no sunshine, the two heat storage tanks respectively store heat medium under different conditions, and the power generation system can work normally under the condition of sunshine or not and generate power continuously.
The heat medium can be heat conduction oil, water or antifreeze, and can be selected according to actual conditions so as to better meet actual requirements.
4. Cooling system
The cooling system comprises a cooling tower 12, corresponding pipelines, a cooling water pump 13 and a condenser 11, wherein a water inlet and a water outlet of the condenser 11 are respectively connected with the cooling tower 12 through a water inlet pipeline and a water outlet pipeline. And a cooling water pump 13 is arranged on the water inlet pipeline to realize water circulation. Cold water provided by the cooling tower 12 enters the condenser 11 to cool the gaseous organic working medium into a liquid state, hot water after heat exchange enters the cooling tower 12 to be cooled, and then the hot water is sent into the condenser 11 again by the cooling water pump 13 to exchange heat, so that water circulation is realized.
The cooling system (including cooling tower, cooling water pump, condenser, etc.) may employ evaporative condenser or air-cooled condenser. The selection can be specifically carried out according to the actual situation so as to better meet the actual requirement.
In this embodiment, the power generation system includes two working modes, which are an insolation mode and a non-insolation mode, and the corresponding working principle is as follows:
sunshine mode: during the sunshine irradiation in the daytime, the inlet main valve 14, the outlet main valve 15 and the low-temperature tank outlet valve 16 are opened, the medium-temperature tank outlet valve 17 and the low-temperature tank inlet valve 18, the heat medium circulating pump 6 and the low-temperature pump 5 are started, and the medium-temperature pump 4 is closed.
1. When the mode is started, the low-temperature heat storage tank 3 is filled with a heat medium, only a small amount of heat medium is in the medium-temperature heat storage tank 2, the low-temperature heat medium from the preheater 8 and the low-temperature heat medium from the low-temperature heat storage tank 3 are converged and enter the solar collector 1 under the drive of the heat medium circulating pump 6 and the low-temperature pump 5, the solar collector 1 absorbs solar energy and is used for heating the low-temperature heat medium, the low-temperature heat medium leaves the solar collector 1 after the temperature of the low-temperature heat medium is raised and is shunted, and one heat medium returns to the heat medium circulating pump 6 through the evaporator 9 and the preheater 8 and enters the circulation again; the other part of the heat medium flows into the medium temperature heat storage tank 2 for storage.
During this mode of operation, the low-temperature heat medium in the low-temperature heat storage tank 3 gradually decreases, and the heated heat medium in the medium-temperature heat storage tank 2 gradually increases.
2. A non-sunshine mode: during the non-sunlight irradiation period, the inlet main valve 14, the outlet main valve 15 and the low-temperature tank outlet valve 16 are closed, the medium temperature tank outlet valve 17 and the low-temperature tank inlet valve 18 are opened, the heat medium circulating pump 6 and the low-temperature pump 5 are closed, and the medium temperature pump 4 is started.
When the mode is started, only a small amount of heat medium is in the low-temperature heat storage tank 3, the medium-temperature heat storage tank 2 is filled with high-temperature heat medium, the high-temperature heat medium is driven by the medium-temperature pump 4 to be cooled through the evaporator 9 and the preheater 8 to become low-temperature heat medium, and then the low-temperature heat medium flows into the low-temperature heat storage tank 3 to be stored.
During this mode of operation, the heat medium in the low-temperature heat storage tank 3 gradually increases, and the heat medium in the medium-temperature heat storage tank 2 gradually decreases.
In the two modes, the liquid working medium is driven by the working medium pump 7, and then becomes a gaseous working medium through the preheater 8 and the evaporator 9, the gaseous working medium enters the ORC expansion generator 10 to do work and supply power to the outside, the gaseous working medium enters the condenser 11 to become the liquid working medium again and returns to the working medium pump 7, and the thermodynamic cycle of the organic working medium is realized; the cooling water pump 13 sends the cooling water into the condenser 11, the cooling water returns to the cooling tower 12 again after being heated, and is sent into the condenser 11 again by the cooling water pump 13 after being cooled, so that the cooling water circulation is realized.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model provides a solar low-temperature double-tank power generation system, which adopts a medium-temperature heat storage tank and a low-temperature heat storage tank to be used in parallel, wherein the low-temperature heat storage tank releases low-temperature heat medium under the condition of illumination, and the medium-temperature heat storage tank stores the heated heat medium; under the condition of no sunlight, the medium-temperature heat storage tank releases the high-temperature heat medium, and the low-temperature heat storage tank stores the low-temperature heat medium, so that the system can be ensured to run uninterruptedly under the conditions of sunlight irradiation and no sunlight irradiation, and continuous power generation is realized. The solar energy is effectively converted into electric energy, and energy utilization is realized. The heat medium, the organic working medium and the cooling water are recycled, and the sustainable operation of the system is ensured. The system investment and the operation cost can be greatly reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (9)
1. The utility model provides a solar energy low temperature double-tank power generation system which characterized in that: the system comprises an ORC expansion generator, a condenser, a heat exchange device, a solar heat collector, a medium-temperature heat storage tank and a low-temperature heat storage tank; the ORC expansion generator is connected with the condenser through a first working medium pipeline, the condenser is connected with the heat exchange device through a second working medium pipeline, a working medium pump is arranged on the second working medium pipeline, and the heat exchange device is connected with the ORC expansion generator through a third working medium pipeline; the heat exchange device is connected with the solar heat collector through a first heat collecting pipeline and a second heat collecting pipeline respectively; the medium-temperature heat storage tank is connected with the first heat collection pipeline through a medium-temperature liquid inlet pipeline and a medium-temperature liquid outlet pipeline respectively; and the low-temperature heat storage tank is connected with the second heat collection pipeline through a low-temperature liquid inlet pipeline and a low-temperature liquid outlet pipeline respectively.
2. The solar cryogenic dual-tank power generation system of claim 1, wherein: an inlet main valve is arranged on the first heat collecting pipeline; in the flow direction of the heat medium in the first heat collection pipe, the connection point of the medium temperature liquid inlet pipe and the first heat collection pipe is located at the upstream of the inlet main valve, and the connection point of the medium temperature liquid outlet pipe and the first heat collection pipe is located at the downstream of the inlet main valve.
3. The solar cryogenic dual-tank power generation system of claim 2, wherein: and a medium temperature pump and a medium temperature tank outlet valve are sequentially arranged on the medium temperature liquid outlet pipeline along the flowing direction of the medium in the medium temperature liquid outlet pipeline.
4. The solar cryogenic dual-tank power generation system of claim 1, wherein: an outlet main valve and a heat medium circulating pump are sequentially arranged on the second heat collecting pipeline along the flow direction of a heat medium in the second heat collecting pipeline; in the flowing direction of the heat medium in the second heat collection pipe, the connection point of the low-temperature liquid inlet pipe and the second heat collection pipe is located at the upstream of the outlet main valve, and the connection point of the low-temperature liquid outlet pipe and the second heat collection pipe is located at the downstream of the heat medium circulating pump.
5. The solar cryogenic dual-tank power generation system of claim 4, wherein: and a low-temperature tank inlet valve is arranged on the low-temperature liquid inlet pipe.
6. The solar cryogenic dual-tank power generation system of claim 4, wherein: and a low-temperature pump and a low-temperature tank outlet valve are sequentially arranged on the low-temperature liquid outlet pipeline along the flowing direction of the internal heat medium.
7. The solar cryogenic dual-tank power generation system of claim 1, wherein: the heat exchange device comprises an evaporator and a preheater, and a fourth working medium pipeline and a third heat collection pipeline are connected between the evaporator and the preheater; the fourth working medium pipeline is communicated with the third working medium pipeline and the second working medium pipeline through an evaporator and a preheater respectively; the third heat collecting pipe is communicated with the first heat collecting pipe and the second heat collecting pipe through an evaporator and a preheater respectively.
8. The solar cryogenic dual-tank power generation system of claim 1, wherein: the power generation system also comprises a cooling tower, and the water inlet and the water outlet of the condenser are respectively connected with the cooling tower through a water inlet pipeline and a water outlet pipeline.
9. The solar cryogenic dual-tank power generation system of claim 8, wherein: and the water inlet pipeline is provided with a cooling water pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222805649.3U CN218717008U (en) | 2022-10-24 | 2022-10-24 | Solar low-temperature double-tank power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222805649.3U CN218717008U (en) | 2022-10-24 | 2022-10-24 | Solar low-temperature double-tank power generation system |
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| CN218717008U true CN218717008U (en) | 2023-03-24 |
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| CN202222805649.3U Active CN218717008U (en) | 2022-10-24 | 2022-10-24 | Solar low-temperature double-tank power generation system |
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- 2022-10-24 CN CN202222805649.3U patent/CN218717008U/en active Active
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