CN216922387U - Large tower type photo-thermal power generation system using modular integration technology - Google Patents
Large tower type photo-thermal power generation system using modular integration technology Download PDFInfo
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- CN216922387U CN216922387U CN202122770102.XU CN202122770102U CN216922387U CN 216922387 U CN216922387 U CN 216922387U CN 202122770102 U CN202122770102 U CN 202122770102U CN 216922387 U CN216922387 U CN 216922387U
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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
Abstract
A large-scale tower type photo-thermal power generation system utilizing a modular integration technology comprises a mirror field area and a conventional island, wherein the mirror field area comprises a plurality of photo-thermal mirror field modules, and each photo-thermal mirror field module comprises a small heat collecting tower (3) and a heliostat; each small heat collecting tower is connected with a steam condenser (7) arranged in the conventional island through a cold water pipeline and is connected with a steam drum arranged in the conventional island through a steam pipeline; therefore, each photothermal mirror field module is connected in parallel to form a heat exchange system of the photothermal power station; a large steam turbine and a large generator are arranged in the conventional island; the steam condenser is connected with the large steam turbine through a cold water pipeline, and the steam drum is connected with the large steam turbine through a steam pipeline. The utility model utilizes a large-scale tower type photo-thermal power generation system of a modularized integration technology to achieve the purposes of improving installed capacity and enhancing regulating capacity.
Description
Technical Field
The utility model relates to the technical field of photo-thermal power generation, in particular to a large-scale tower type photo-thermal power generation system utilizing a modular integration technology.
Background
In recent years, green and low-carbon development is highly emphasized in various countries under the large background of coping with global warming. After the 3060 target of China is provided, the method for accelerating the adjustment and optimization of the industrial structure and the energy structure and the rapid development of new energy become important paths for the development of the energy industry.
At present, unstable new energy power generation output, difficult storage of electric energy and insufficient power system regulation capacity are important factors restricting new energy development, and the 'integration of wind, light, water, fire and storage' and the 'integration of source network and load and storage' are key development directions, particularly, the solar photo-thermal power generation technology has the advantages of continuous power generation, strong peak regulation capacity and the like of conventional thermal power, and is considered as one of the best alternative schemes for replacing coal power in the future.
The traditional solar tower type photo-thermal power station comprises a photo-thermal heat collection system and a conventional island power generation system, the integration level between the two systems is not high, the two systems are relatively independent except for needing heat exchange, and a circulating system respectively adopts a molten salt special medium and a water vapor conventional medium. Due to the technical and economic factors such as field arrangement, height of a heat absorption tower, system efficiency, construction cost and the like, the installed capacity of the existing single-tower type photo-thermal power station is only about 100MW, and the single-tower type photo-thermal power station cannot be matched with a large-scale efficient conventional island generator set. How to realize the large-scale application of the photo-thermal power station, the large-scale thermal power generating unit is replaced to a certain extent, and the problem becomes the focus of technical attack and customs. Therefore, the large-scale photo-thermal power generation system technology with flexible spatial layout, larger system capacity and stronger regulation capacity is researched, the system efficiency and the economy are improved, the regulation control capacity of a power system is enhanced, and the method has important significance for promoting tower-type photo-thermal power generation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a large-scale tower type photo-thermal power generation system utilizing a modular integration technology, and aims to improve installed capacity and enhance regulation capacity.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a large-scale tower type photo-thermal power generation system utilizing a modular integration technology comprises a mirror field area and a conventional island, wherein the mirror field area comprises a plurality of photo-thermal mirror field modules, and each photo-thermal mirror field module comprises a small heat collecting tower (3) and a heliostat; each small heat collecting tower is connected with a steam condenser (7) arranged in the conventional island through a cold water pipeline and is connected with a steam drum arranged in the conventional island through a steam pipeline; therefore, each photothermal mirror field module is connected in parallel to form a heat exchange system of the photothermal power station; a large steam turbine and a large generator are arranged in the conventional island; the steam condenser is connected with the large steam turbine through a cold water pipeline, and the steam drum is connected with the large steam turbine through a steam pipeline.
The large steam turbine and the large generator are 300MW or above steam turbine generator sets.
The small heat collecting tower and the heliostat are arranged according to the heat required by the 2-5 MW installed capacity.
An electric heating device is arranged in the conventional island; the electric heating device is connected with the low-voltage side of the peripheral wind power station, the photovoltaic station and the booster station, and is simultaneously connected with the steam drum through a steam pipeline.
An energy storage device is arranged in the conventional island; the energy storage device is connected with the low-voltage side of the booster station.
The modular arrangement is adopted in the aspect of arrangement of the mirror fields, the original large mirror field is provided with one heat absorption tower, the modular arrangement is changed into the modular arrangement, namely, one small heat absorption tower is arranged in each modular photothermal mirror field with the installation scale of 2-5 MW, and one large photothermal power station is provided with a plurality of modular photothermal mirror fields; each modular mirror field heats water and then collects the water to a steam drum set for heat storage; a turbo generator unit with a large installation capacity can be selected according to the number of the configured modular mirror fields, so that the purposes of increasing the solar photo-thermal power generation system and the installation capacity are achieved.
A large steam turbine and a generator set are adopted in the aspect of conventional island arrangement, and the energy conversion rate of the photo-thermal power station is improved. The electric heating device is adopted, and the electric heating device cooperates with new energy enterprises around the photo-thermal power station, and the wind and light abandoning power is used for heating cold water to manufacture vapor, and then the vapor is stored and enters the steam drum, so that the heat storage capacity of the photo-thermal power station is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in fig. 1: the solar photovoltaic power generation system comprises a mirror field area 1, a photo-thermal mirror field module 2, a small heat collecting tower 3, a heliostat 4, a conventional island 5, a steam drum 6, a steam condenser 7, a large steam turbine 8, a large generator 9, a booster station 10, a cold water pipeline 11, a steam pipeline 12, an electric heating device 13, an energy storage device 14, a photovoltaic power generation device 15, a wind power generation device 16 and a power transmission line 17.
Detailed Description
The present invention and its effects will be further explained below with reference to the accompanying drawings.
Referring to fig. 1, a large-scale tower type photothermal power generation system using a modular integration technology includes a mirror field area 1 and a conventional island, the mirror field area 1 includes a plurality of photothermal mirror field modules 2, and each photothermal mirror field module 2 includes a small heat collecting tower 3 and a heliostat 4; each small heat collecting tower 3 is connected with a steam condenser 7 arranged in the conventional island through a cold water pipeline 11 and is connected with a steam drum 6 arranged in the conventional island through steam 12; therefore, each photo-thermal mirror field module 2 is connected in parallel to form a heat exchange system of the photo-thermal power station; a large steam turbine 8 and a large generator 9 are arranged in the conventional island 5; the steam condenser 7 is connected with a large turbine 8 through a cold water pipeline 11, and the steam drum 6 is connected with the large turbine 8 through a steam pipeline 12.
The small heat collecting tower 3 and the heliostats 4 are arranged according to the heat required by the installed capacity of 2-5 MW.
Wherein the large turbine 8 and the large generator 9 are steam turbine generator sets of 300MW and above.
A large-capacity heat collecting system is constructed through a modularization technology, and then a large-scale steam turbine generator 8 and a large-scale generator 9 of 300MW and above are matched, and the power generation efficiency is improved.
Steam drum 6 sends steam to steam turbine 8 through steam conduit 12, and steam turbine 8 promotes the generator 9 and rotates the back, and the steam condenses for water sends to steam condenser 7 through cold water pipeline 11, and steam condenser 7 sends the heat collector 3 of every light and heat mirror field module 2 after with the steam cooling, cyclic utilization. And water replaces the traditional fused salt to be used as a circulating medium, the mirror field area 1 and the conventional island 5 share a water circulating system consisting of a cold water pipeline 11 and a steam pipeline 12, the heat loss is reduced by reducing the primary heat exchange process, the energy conversion efficiency is further improved, the fused salt investment is saved, and the system maintenance difficulty is reduced.
The mirror field area 1 can adopt irregular terrain and has low requirements on site requirements and conditions. The light and heat mirror field module setting mode compares also more nimble for traditional tower light and heat power plant heliostat arranges. Because the light and heat mirror field adopts the modularization overall arrangement, every module has independent small-size heat collection tower 3, and the required heat of every module is less, so the heat collector height all need not too big with the capacity, and every light and heat mirror field module accounts for less, compares for traditional tower light and heat power station, and the mirror field need not be according to traditional circular diffusion type arrangement scheme, and requirement condition reduces to the regional place of mirror field.
An electric heating device 13 is arranged in the conventional island 5; the electric heating device 13 is connected with the peripheral wind power 16, photovoltaic 15 and the low-pressure side of the booster station 10 through a power transmission line 17, and is connected with the steam drum 6 through a steam pipeline.
Other new energy projects such as photovoltaic projects and wind power projects are generally arranged around the photothermal power station. Adopt electric heater unit, through the cooperation with peripheral new forms of energy enterprise, abandon wind and abandon the photoelectric quantity and directly be arranged in electric heater unit and send to steam drum 6 through the steam conduit after heating the water in steam condenser 7. The output of the photo-thermal power station is improved by increasing the heat storage capacity of the photo-thermal power station, and the peak regulation capacity of the photo-thermal power station is further improved.
An energy storage device 14 is arranged in the conventional island 5; the energy storage device 14 is connected to the low-pressure side of the photothermal booster station 10. The limited power generation capacity of the photo-thermal power station due to scheduling and other problems is stored, two energy storage means of heat storage and power storage of the photo-thermal power station are achieved, the output and peak shaving capacity of the photo-thermal power station are improved, and the photo-thermal power station is facilitated to have greater flexibility in peak shaving.
The utility model integrates and forms a larger tube heat power station heat collecting system by adopting the small capacity combination of the photo-thermal mirror field modules 2, compared with the existing photo-thermal power station heat collecting system, the photo-thermal mirror field modules 2 have small floor area and more flexible field arrangement, the field requirement on the construction of the photo-thermal power station is reduced, the height of a heat absorption tower of each photo-thermal mirror field module is greatly reduced, a large-scale heat collecting system is formed by combining a plurality of modules, and the problem that the existing photo-thermal power station cannot be overlarge due to the fact that the height and the capacity of the heat absorption tower and the limit of the heat collecting field are limited by the power station manufacturing and assembling machine is solved.
The capacity of the photo-thermal power generation system unit is increased, and compared with the existing small-sized power generation unit, the power generation efficiency is greatly increased. Compared with a traditional tower type photo-thermal power station, the construction period of the large photo-thermal power generation system integrated in a modularized mode is more flexible, the mirror field of the traditional tower type photo-thermal power station needs to be built once, the capacity can not be changed any more, and the large photo-thermal power generation system integrated in the modularized mode can achieve the purpose of increasing installed capacity by means of a modular mirror field module added in a long term.
Claims (5)
1. The utility model provides an utilize large-scale tower solar-thermal power generation system of modularization integrated technology, includes mirror field district and conventional island, its characterized in that: the mirror field area (1) comprises a plurality of photo-thermal mirror field modules (2), and each photo-thermal mirror field module (2) comprises a small heat collection tower (3) and a heliostat (4); each small heat collecting tower (3) is connected with a steam condenser (7) arranged in the conventional island through a cold water pipeline (11) and is connected with a steam drum (6) arranged in the conventional island through a steam pipeline (12); therefore, each photo-thermal mirror field module (2) is connected in parallel to form a heat exchange system of the photo-thermal power station; a large-scale steam turbine (8) and a large-scale generator (9) are arranged in the conventional island (5); the steam condenser (7) is connected with the large-scale steam turbine (8) through a cold water pipeline (11), and the steam drum (6) is connected with the large-scale steam turbine (8) through a steam pipeline (12).
2. The large-scale tower type photo-thermal power generation system using the modular integration technology according to claim 1, wherein: the large turbine (8) and the large generator (9) are steam turbine generator sets of 300MW or above.
3. The large-scale tower type photo-thermal power generation system using the modular integration technology according to claim 1, wherein: the small heat collecting tower (3) and the heliostat (4) are arranged according to the heat required by the 2-5 MW installed capacity correspondence.
4. A large-scale tower type solar-thermal power generation system using a modular integration technology according to any one of claims 1 to 3, wherein: an electric heating device (13) is arranged in the conventional island (5); the electric heating device (13) is connected with the peripheral wind power (16), photovoltaic (15) and low-voltage side of the booster station (10) and is connected with the steam drum (6) through a steam pipeline.
5. A large-scale tower type solar-thermal power generation system using a modular integration technology according to any one of claims 1 to 3, wherein: an energy storage device (14) is arranged in the conventional island (5); the energy storage device (14) is connected to the low-voltage side of the booster station (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082623 | 2021-08-31 | ||
| CN2021220826236 | 2021-08-31 |
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| CN216922387U true CN216922387U (en) | 2022-07-08 |
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| CN202122770102.XU Active CN216922387U (en) | 2021-08-31 | 2021-11-12 | Large tower type photo-thermal power generation system using modular integration technology |
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