CN210179925U - Groove type photo-thermal power generation system with complementary photo-electricity - Google Patents
Groove type photo-thermal power generation system with complementary photo-electricity Download PDFInfo
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- CN210179925U CN210179925U CN201920580468.0U CN201920580468U CN210179925U CN 210179925 U CN210179925 U CN 210179925U CN 201920580468 U CN201920580468 U CN 201920580468U CN 210179925 U CN210179925 U CN 210179925U
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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
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Abstract
The utility model relates to a light, complementary slot type solar-thermal power generation system of electricity, a serial communication port, including slot type thermal-arrest mirror field, oil-salt heat exchanger, conduction oil pump, low temperature fused salt storage tank, low temperature fused salt pump, electric heater, high temperature fused salt storage tank, high temperature fused salt pump, steam generator and steam power generation system. The utility model discloses a complementary slot type solar-thermal power generation system of light, electricity, through install the electric heater bypass additional in slot type solar-thermal power station fused salt energy storage system, utilize the electric heater to absorb and abandon electric quantities such as wind abandonment light, millet electricity, can reduce the electric quantity of abandoning of new forms of energy effectively, play the effect of peak clipping and filling valley to the electric wire netting; the power of the electric heater can be flexibly adjusted according to the solar radiation intensity at non-design points, so that the energy output at the non-design points is increased, and the operation flexibility and the economical efficiency of the groove type photo-thermal power station are improved; the opening and closing of the electric heater bypass has no influence on the original groove type photo-thermal power generation system, and the system safety is high.
Description
Technical Field
The utility model relates to a complementary slot type solar-thermal power generation system of light, electricity belongs to slot type solar-thermal power generation technical field.
Background
The groove type photo-thermal power generation technology is the mature and lowest-cost solar thermal power generation technology at present and accords with the international solar thermal power generation technology development trend of large capacity, high parameter and long period heat storage.
In northwest areas of China, solar energy resources are most abundant, but the solar energy resources are also areas with the highest electricity abandonment of new energy resources such as wind power and photovoltaic. Meanwhile, along with the development of economy, the demand of society for electric energy is continuously increased, the capacity of the power grid is continuously enlarged, the power utilization structure is greatly changed, the peak-to-valley difference of each large power grid is gradually increased, and how to effectively utilize valley electricity is of great significance to peak clipping, valley filling, peak adjusting and capacity expanding of the power grid.
The trough type photo-thermal power station with heat storage and the wind power, the photovoltaic power, the valley power and other power form a combined complementary system for power generation, the significant effect on reducing the wind and light abandoning rate is achieved, surplus peak and valley power can be effectively transferred, the operation flexibility and the economical efficiency of the trough type photo-thermal power station are favorably improved, and the trough type photo-thermal power station is a green power generation technology in the true sense.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model provides a slot type light and heat power generation system for realizing abandoning wind and abandoning effective utilization of electric power such as light, millet electricity improves slot type light and heat power station's operation flexibility and economic nature.
In order to achieve the above object, the technical solution of the present invention is to provide a photo-thermal power generation system with a groove type, which is characterized in that the system comprises a groove type heat collecting mirror field, an oil-salt heat exchanger, a heat transfer oil pump, a low-temperature molten salt storage tank, a low-temperature molten salt pump, an electric heater, a high-temperature molten salt storage tank, a high-temperature molten salt pump, a steam generator and a steam power generation system; an outlet of the groove type heat collecting mirror field is respectively connected with a first interface at the heat conducting oil side of the oil-salt heat exchanger and an inlet at the heat releasing side of the steam generator through a first heat conducting oil opening and closing pipeline; the heat release side outlet of the steam generator is divided into two paths, one path is connected with a second interface at the heat conduction oil side of the oil-salt heat exchanger through a second heat conduction oil opening and closing pipeline, and the other path is connected with the inlet of the heat conduction oil pump; the outlet of the heat-conducting oil pump is divided into two paths, one path is connected with the inlet of the groove type heat-collecting mirror field through a heat-conducting oil opening and closing pipeline IV, and the other path is connected with a second interface at the heat-conducting oil side of the oil-salt heat exchanger through a heat-conducting oil opening and closing pipeline III; the heat-conducting oil opening and closing pipeline II is communicated with the heat-conducting oil opening and closing pipeline IV through a heat-conducting oil opening and closing pipeline III, so that the outlet of a heat-conducting oil pump can be connected with a second interface at the heat-conducting oil side of the oil-salt heat exchanger through the heat-conducting oil opening and closing pipeline III; an outlet of the low-temperature molten salt storage tank is connected with an inlet of the low-temperature molten salt pump through a molten salt opening and closing pipeline I; the outlet of the low-temperature molten salt pump is respectively connected with a molten salt opening and closing pipeline III and a molten salt opening and closing pipeline V through a molten salt opening and closing pipeline II; the fused salt opening and closing pipeline five is connected with the inlet of the electric heater, and the outlet of the electric heater is connected with the inlet of the high-temperature fused salt storage tank through the fused salt opening and closing pipeline six and the fused salt opening and closing pipeline ten in sequence; the molten salt opening and closing pipeline III is connected with a first interface at the molten salt side of the oil-salt heat exchanger, and is connected with an inlet of the low-temperature molten salt storage tank through a molten salt opening and closing pipeline IV; a second interface on the molten salt side of the oil-salt heat exchanger is divided into two paths, one path is sequentially connected with an inlet of the high-temperature molten salt storage tank through a molten salt opening and closing pipeline nine and a molten salt opening and closing pipeline ten, and the other path is connected with an outlet of the high-temperature molten salt pump through a molten salt opening and closing pipeline eight; an inlet of the high-temperature molten salt pump is connected with an outlet of the high-temperature molten salt storage tank through a molten salt opening and closing pipeline seven; the outlet of the heat absorption side of the steam generator is connected with the inlet of the steam power generation system, and the outlet of the steam power generation system is connected with the inlet of the heat absorption side of the steam generator.
Preferably, a reheater is provided in the steam power generation system.
Preferably, a regulating bypass connected with the low-temperature molten salt storage tank is arranged at the outlet of the electric heater.
The utility model discloses a complementary slot type solar-thermal power generation system of light, electricity, through install the electric heater bypass additional in slot type solar-thermal power station fused salt energy storage system, utilize the electric heater to absorb and abandon electric quantities such as wind abandonment light, millet electricity, can reduce the electric quantity of abandoning of new forms of energy effectively, play the effect of peak clipping and filling valley to the electric wire netting; the power of the electric heater can be flexibly adjusted according to the solar radiation intensity at non-design points, so that the energy output at the non-design points is increased, and the operation flexibility and the economical efficiency of the groove type photo-thermal power station are improved; the opening and closing of the electric heater bypass has no influence on the original groove type photo-thermal power generation system, and the system safety is high.
Drawings
FIG. 1 is a schematic diagram of the connection of the main devices of the photo-electric complementary groove type photo-thermal power generation system of the present invention;
FIG. 2 is a schematic view of the photo-thermal power generation system with complementary photo-thermal and electric channels under the condition of using an electric heater in the daytime;
FIG. 3 is a schematic view of the photo-thermal power generation system without using an electric heater during the day;
fig. 4 is a system diagram of the photo-thermal power generation system with complementary photo-thermal and electrical functions under the condition that the electric heater is used at night;
fig. 5 is a system diagram of the photo-thermal power generation system without using an electric heater at night.
In FIGS. 2-5, the solid lines represent open lines and equipment, and the dashed lines represent closed lines and equipment.
In FIGS. 1 to 5: 1-a trough type heat collecting mirror field; 2-oil-salt heat exchanger; 3-a heat conducting oil pump; 4-low temperature molten salt storage tank; 5-low temperature molten salt pump; 6-an electric heater; 7-high temperature molten salt storage tank; 8-high temperature molten salt pump; 9-a steam generator; 10-a steam turbine; 11-a generator; 12-a cooling tower; 13-a feed pump; A1-A4-conduction oil open-close pipeline; B1-B10 molten salt opening and closing pipelines.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
As shown in fig. 1, the utility model provides a light, complementary slot type solar-thermal power generation system of electricity, including slot type thermal-arrest mirror field 1, oil-salt heat exchanger 2, conduction oil pump 3, low temperature fused salt storage tank 4, low temperature fused salt pump 5, electric heater 6, high temperature fused salt storage tank 7, high temperature fused salt pump 8, steam generator 9, steam turbine 10, generator 11, cooling tower 12, water feed pump 13, conduction oil open and close pipeline A1 ~ A4, fused salt open and close pipeline B1 ~ B10.
An outlet of the groove type heat collecting mirror field 1 is connected with one end of a heat conduction oil opening and closing pipeline A1, a pipeline connected with the other end of the heat conduction oil opening and closing pipeline A1 is divided into two paths, one path is connected with a first interface on the heat conduction oil side of the oil-salt heat exchanger 2, and the other path is connected with an inlet on the heat release side of the steam generator 9. The outlet of the heat releasing side of the steam generator 9 is divided into two paths, one path is connected with the second interface of the heat conducting oil side of the oil-salt heat exchanger 2 through a heat conducting oil opening and closing pipeline A2, and the other path is connected with the inlet of the heat conducting oil pump 3. The outlet of the heat conduction oil pump 3 is divided into two paths, one path is connected with the inlet of the groove type heat collecting mirror field 1 through a heat conduction oil opening and closing pipeline A4, the other path is connected with a heat conduction oil opening and closing pipeline A3, and the heat conduction oil opening and closing pipeline A4 is connected with a heat conduction oil opening and closing pipeline A2 through a heat conduction oil opening and closing pipeline A3. The outlet of the low-temperature molten salt storage tank 4 is connected with the inlet of the low-temperature molten salt pump 5 through a molten salt opening and closing pipeline B1. The outlet of the low-temperature molten salt pump 5 is connected with one end of a molten salt opening and closing pipeline B2, and the other end of the molten salt opening and closing pipeline B2 is connected with a molten salt opening and closing pipeline B3 and a molten salt opening and closing pipeline B5. The fused salt opening and closing pipeline B5 is connected with the inlet of the electric heater 6, and the outlet of the electric heater 6 is connected with the inlet of the high-temperature fused salt storage tank 7 through the fused salt opening and closing pipeline B6 and the fused salt opening and closing pipeline B10 in sequence. The fused salt opening and closing pipeline B3 is connected with the first interface on the fused salt side of the oil-salt heat exchanger 2, and is connected with the inlet of the low-temperature fused salt storage tank 4 through the fused salt opening and closing pipeline B4. The second interface on the molten salt side of the oil-salt heat exchanger 2 is divided into two paths, one path is connected with the inlet of the high-temperature molten salt storage tank 7 through a molten salt opening and closing pipeline B9 and a molten salt opening and closing pipeline B10 in sequence, and the other path is connected with the outlet of the high-temperature molten salt pump 8 through a molten salt opening and closing pipeline B8. The inlet of the high-temperature molten salt pump 8 is connected with the outlet of the high-temperature molten salt storage tank 7 through a molten salt opening and closing pipeline B7. The heat absorption side outlet of the steam generator 9 is connected to the inlet of a steam turbine 10, the outlet of the steam turbine 10 is connected to the inlet of a cooling tower 12, the outlet of the cooling tower 12 is connected to the inlet of a feed water pump 13, and the outlet of the feed water pump 13 is connected to the heat absorption side inlet of the steam generator 9.
The system runs in the daytime:
1) using electric heating: in the heat conduction oil pipeline, the heat conduction oil opening and closing pipeline A3 is closed, and the other heat conduction oil opening and closing pipelines are opened. The high-temperature heat conducting oil heated by the groove type heat collecting mirror field 1 is divided into two paths, one path of the high-temperature heat conducting oil enters the oil-salt heat exchanger 2 to exchange heat with molten salt, the other path of the high-temperature heat conducting oil enters the steam generator 9 to exchange heat with water, and the two paths of the low-temperature heat conducting oil after being cooled are converged and then enter the groove type heat collecting mirror field 1 through the heat conducting oil pump 3 to continue to circulate. In the molten salt pipeline, the molten salt opening and closing pipelines B4, B7 and B8 are closed, the other molten salt opening and closing pipelines are opened, the high-temperature molten salt pump 8 does not work, low-temperature molten salt in the low-temperature molten salt storage tank 4 is led out through the low-temperature molten salt pump 5 and is divided into two paths, one path of the low-temperature molten salt enters the oil-salt heat exchanger 2 to exchange heat with heat conduction oil, the other path of the low-temperature molten salt enters the electric heater 6 to be heated, and the two paths of the high-temperature molten salt after being heated are. In the steam power generation system, feed water is pumped to a steam generator 9 through a feed water pump 13, superheated steam is generated after heat exchange with high-temperature heat conduction oil, the steam enters a steam turbine 10 to do work, then enters a cooling tower 12 to be condensed, and then enters the feed water pump 13 to continue circulation.
2) No electric heating is used: in the heat conduction oil pipeline, the heat conduction oil opening and closing pipeline A3 is closed, and the other heat conduction oil opening and closing pipelines are opened. The high-temperature heat conducting oil heated by the groove type heat collecting mirror field 1 is divided into two paths, one path of the high-temperature heat conducting oil enters the oil-salt heat exchanger 2 to exchange heat with molten salt, the other path of the high-temperature heat conducting oil enters the steam generator 9 to exchange heat with water, and the two paths of the low-temperature heat conducting oil after being cooled are converged and then enter the groove type heat collecting mirror field 1 through the heat conducting oil pump 3 to continue to circulate. In the molten salt pipeline, the molten salt opening and closing pipelines B4-B8 are closed, the other molten salt opening and closing pipelines are opened, and the electric heater 6 and the high-temperature molten salt pump 8 do not work. The low-temperature molten salt in the low-temperature molten salt storage tank 4 is led out through the low-temperature molten salt pump 5, enters the oil-salt heat exchanger 2 to exchange heat with the heat conduction oil, and is stored in the high-temperature molten salt storage tank 7 after being heated. In the steam power generation system, feed water is pumped to a steam generator 9 through a feed water pump 13, superheated steam is generated after heat exchange with high-temperature heat conduction oil, the steam enters a steam turbine 10 to do work, then enters a cooling tower 12 to be condensed, and then enters the feed water pump 13 to continue circulation.
When the system runs at night:
1) using an electric heater: in the heat conduction oil pipeline, the heat conduction oil opening and closing pipeline A3 is opened, the other heat conduction oil opening and closing pipelines are closed, and the groove type heat collecting mirror field 1 does not work. The heat conduction oil pump 3 pumps the low-temperature heat conduction oil to the oil-salt heat exchanger 2 to exchange heat with the molten salt, the heated high-temperature heat conduction oil enters the steam generator 9 to exchange heat with the feed water, and the cooled low-temperature heat conduction oil enters the heat conduction oil pump 3 to continue to circulate. In the molten salt pipeline, the molten salt opening and closing pipelines B3 and B9 are closed, and the other molten salt opening and closing pipelines are opened. The high-temperature molten salt pump 8 pumps the molten salt in the high-temperature molten salt storage tank 7 to the oil-salt heat exchanger 2 to exchange heat with the heat conduction oil, the cooled low-temperature molten salt enters the low-temperature molten salt storage tank 4 to be stored, the low-temperature molten salt in the low-temperature molten salt storage tank 4 is led out by the low-temperature molten salt pump 5, and the low-temperature molten salt enters the electric heater 6 to be heated and then is stored in the high-temperature molten salt storage tank 7. In the steam power generation system, feed water is pumped to a steam generator 9 through a feed water pump 13, superheated steam is generated after heat exchange with high-temperature heat conduction oil, the steam enters a steam turbine 10 to do work, then enters a cooling tower 12 to be condensed, and then enters the feed water pump 13 to continue circulation.
2) Without the use of an electric heater: in the heat conduction oil pipeline, the heat conduction oil opening and closing pipeline A3 is opened, the other heat conduction oil opening and closing pipelines are closed, and the groove type heat collecting mirror field 1 does not work. The heat conduction oil pump 3 pumps the low-temperature heat conduction oil to the oil-salt heat exchanger 2 to exchange heat with the molten salt, the heated high-temperature heat conduction oil enters the steam generator 9 to exchange heat with the feed water, and the cooled low-temperature heat conduction oil enters the heat conduction oil pump 3 to continue to circulate. In the molten salt pipeline, the molten salt opening and closing pipelines B4, B7 and B8 are opened, the other molten salt opening and closing pipelines are closed, and the low-temperature molten salt pump 5 and the electric heater 6 do not work. The high-temperature molten salt pump 8 pumps the molten salt in the high-temperature molten salt storage tank 7 to the oil-salt heat exchanger 2 to exchange heat with the heat conduction oil, and the cooled low-temperature molten salt enters the low-temperature molten salt storage tank 4 to be stored. In the steam power generation system, feed water is pumped to a steam generator 9 through a feed water pump 13, superheated steam is generated after heat exchange with high-temperature heat conduction oil, the steam enters a steam turbine 10 to do work, then enters a cooling tower 12 to be condensed, and then enters the feed water pump 13 to continue circulation.
According to the photovoltaic and electric complementary trough type photo-thermal power generation system and the operation method thereof, the electric heater bypass is additionally arranged in the trough type photo-thermal power station molten salt energy storage system, and the electric heater absorbs electric quantities such as abandoned wind, abandoned light and valley electricity, so that the abandoned electric quantity of new energy can be effectively reduced, and the peak clipping and valley filling effects on a power grid are achieved.
The power of the electric heater in the embodiment can be flexibly adjusted according to the solar radiation intensity at non-design points, so that the energy output at non-design points is increased, and the operation flexibility and the economical efficiency of the groove type photo-thermal power station are improved; the opening and closing of the electric heater bypass has no influence on the original groove type photo-thermal power generation system, and the system safety is high.
Claims (3)
1. A groove type photo-thermal power generation system with complementary light and electricity is characterized by comprising a groove type heat collecting mirror field, an oil-salt heat exchanger, a heat conducting oil pump, a low-temperature molten salt storage tank, a low-temperature molten salt pump, an electric heater, a high-temperature molten salt storage tank, a high-temperature molten salt pump, a steam generator and a steam power generation system; an outlet of the groove type heat collecting mirror field is respectively connected with a first interface at the heat conducting oil side of the oil-salt heat exchanger and an inlet at the heat releasing side of the steam generator through a first heat conducting oil opening and closing pipeline; the heat release side outlet of the steam generator is divided into two paths, one path is connected with a second interface at the heat conduction oil side of the oil-salt heat exchanger through a second heat conduction oil opening and closing pipeline, and the other path is connected with the inlet of the heat conduction oil pump; the outlet of the heat-conducting oil pump is divided into two paths, one path is connected with the inlet of the groove type heat-collecting mirror field through a heat-conducting oil opening and closing pipeline IV, and the other path is connected with a second interface at the heat-conducting oil side of the oil-salt heat exchanger through a heat-conducting oil opening and closing pipeline III; the heat-conducting oil opening and closing pipeline II is communicated with the heat-conducting oil opening and closing pipeline IV through a heat-conducting oil opening and closing pipeline III, so that the outlet of a heat-conducting oil pump can be connected with a second interface at the heat-conducting oil side of the oil-salt heat exchanger through the heat-conducting oil opening and closing pipeline III; an outlet of the low-temperature molten salt storage tank is connected with an inlet of the low-temperature molten salt pump through a molten salt opening and closing pipeline I; the outlet of the low-temperature molten salt pump is respectively connected with a molten salt opening and closing pipeline III and a molten salt opening and closing pipeline V through a molten salt opening and closing pipeline II; the fused salt opening and closing pipeline five is connected with the inlet of the electric heater, and the outlet of the electric heater is connected with the inlet of the high-temperature fused salt storage tank through the fused salt opening and closing pipeline six and the fused salt opening and closing pipeline ten in sequence; the molten salt opening and closing pipeline III is connected with a first interface at the molten salt side of the oil-salt heat exchanger, and is connected with an inlet of the low-temperature molten salt storage tank through a molten salt opening and closing pipeline IV; a second interface on the molten salt side of the oil-salt heat exchanger is divided into two paths, one path is sequentially connected with an inlet of the high-temperature molten salt storage tank through a molten salt opening and closing pipeline nine and a molten salt opening and closing pipeline ten, and the other path is connected with an outlet of the high-temperature molten salt pump through a molten salt opening and closing pipeline eight; an inlet of the high-temperature molten salt pump is connected with an outlet of the high-temperature molten salt storage tank through a molten salt opening and closing pipeline seven; the outlet of the heat absorption side of the steam generator is connected with the inlet of the steam power generation system, and the outlet of the steam power generation system is connected with the inlet of the heat absorption side of the steam generator.
2. The photo-electric complementary trough photo-thermal power generation system of claim 1, wherein: a reheater is arranged in the steam power generation system.
3. The photo-electric complementary trough photo-thermal power generation system of claim 1, wherein: and an outlet of the electric heater is provided with an adjusting bypass connected with the low-temperature molten salt storage tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920580468.0U CN210179925U (en) | 2019-04-25 | 2019-04-25 | Groove type photo-thermal power generation system with complementary photo-electricity |
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| CN201920580468.0U CN210179925U (en) | 2019-04-25 | 2019-04-25 | Groove type photo-thermal power generation system with complementary photo-electricity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057115A (en) * | 2019-04-25 | 2019-07-26 | 上海锅炉厂有限公司 | A kind of light, electricity complementary trough photovoltaic power generation system and its operation method |
| CN114592934A (en) * | 2022-03-21 | 2022-06-07 | 西安热工研究院有限公司 | System and method for realizing thermal power generating unit transformation based on high-low parameter combined molten salt |
| CN114592933A (en) * | 2022-03-21 | 2022-06-07 | 西安热工研究院有限公司 | Combined molten salt energy storage and peak regulation system and method utilizing exhaust steam of intermediate pressure cylinder to store heat |
-
2019
- 2019-04-25 CN CN201920580468.0U patent/CN210179925U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057115A (en) * | 2019-04-25 | 2019-07-26 | 上海锅炉厂有限公司 | A kind of light, electricity complementary trough photovoltaic power generation system and its operation method |
| CN114592934A (en) * | 2022-03-21 | 2022-06-07 | 西安热工研究院有限公司 | System and method for realizing thermal power generating unit transformation based on high-low parameter combined molten salt |
| CN114592933A (en) * | 2022-03-21 | 2022-06-07 | 西安热工研究院有限公司 | Combined molten salt energy storage and peak regulation system and method utilizing exhaust steam of intermediate pressure cylinder to store heat |
| CN114592933B (en) * | 2022-03-21 | 2023-05-02 | 西安热工研究院有限公司 | Combined molten salt energy storage peak shaving system and method utilizing exhaust steam and heat storage of medium-pressure cylinder |
| CN114592934B (en) * | 2022-03-21 | 2023-11-17 | 西安热工研究院有限公司 | System and method for realizing thermal power unit transformation based on high-low parameter combined molten salt |
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