CN218884299U - Multisource salt power generation system - Google Patents
Multisource salt power generation system Download PDFInfo
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- CN218884299U CN218884299U CN202222826531.9U CN202222826531U CN218884299U CN 218884299 U CN218884299 U CN 218884299U CN 202222826531 U CN202222826531 U CN 202222826531U CN 218884299 U CN218884299 U CN 218884299U
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Abstract
The utility model relates to a multisource salt power generation system, which comprises a wind power generation subsystem, a photovoltaic power generation subsystem, a photo-thermal power generation subsystem and an electric heating subsystem; the heat storage module of the photo-thermal power generation subsystem comprises a high-temperature storage tank, a low-temperature storage tank, a salt melting furnace and molten salt; the salt melting furnace is provided with a solid molten salt feeding hole and two outlet branches, wherein the first outlet branch pumps molten salts with different temperatures to the high-temperature storage tank and the low-temperature storage tank respectively, and the second outlet branch pumps the molten salts to a molten salt inlet of the electric heating subsystem; the electric heating subsystem adopts one or two of a photovoltaic power generation subsystem, a wind power generation subsystem and a power grid to supply power. The utility model can utilize the wind and photovoltaic electricity abandoning of the wind power generation electronic system and the photovoltaic power generation subsystem to melt and raise the temperature of the fused salt, thereby promoting the consumption of renewable energy sources while reducing the cost of the fused salt; meanwhile, the reliability and the safety of the renewable energy grid connection are improved through the integrated design of wind, light and heat storage.
Description
Technical Field
The utility model relates to a fused salt melts technique for the first time, especially relates to a multisource salt power generation system.
Background
Wind power generation is a renewable energy power generation mode which is the most mature in technology and the lowest in power generation cost at present except for hydraulic power generation. However, wind power output has randomness and volatility, so that wind power controllability and schedulability are extremely poor, and the problem of wind abandon is easily caused. Similarly, photovoltaic power generation is limited by climate reasons and self to stop in the daytime and at night, and the problem of light abandon is also serious along with the increase of the photovoltaic grid-connected proportion.
The problem of consumption of renewable energy sources such as wind power and photovoltaic can be solved through photo-thermal power generation, the adjusting capacity of a power system is improved, and stable electric energy supply is guaranteed. Before the photo-thermal power station is put into operation for the first time, solid molten salt needs to be heated and melted and heated to the operation temperature. At present, fuel is mostly adopted for heating to provide heat for salt melting, a 100MW photo-thermal power station is equipped with 8-hour heat storage, the required amount of molten salt is close to 35000 tons, and a large amount of fuel is required to be consumed in the salt melting process. The main problems of this method using fuel salt are: on one hand, the fuel cost can improve the initial investment cost of the photo-thermal power station; on the other hand, the burning of the fuel causes unnecessary environmental pollution.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, a technique that can utilize and abandon wind, abandon light and carry out light and heat power station fused salt medium and melt for the first time is provided, the utility model provides a following technical scheme:
a multi-source salt power generation system comprises a wind power generation subsystem, a photovoltaic power generation subsystem, a photo-thermal power generation subsystem and an electric heating subsystem;
the photo-thermal power generation subsystem comprises a light and heat collecting module, a heat storage module and a steam power generation module; the heat storage module comprises a high-temperature storage tank, a low-temperature storage tank, a salt melting furnace and molten salt;
the fused salt outlet of the light-gathering and heat-collecting module is communicated with the high-temperature storage tank, and the fused salt inlet is communicated with the low-temperature storage tank through the low-temperature pump; the steam power generation module is characterized in that a molten salt inlet is communicated with a high-temperature storage tank through a high-temperature pump, a molten salt outlet is communicated with a low-temperature storage tank, and the generated power is connected with a power grid through a first power switch;
the salt melting furnace is provided with a solid molten salt feeding hole, a first outlet branch and a second outlet branch, the first outlet branch pumps molten salts with different temperatures to a high-temperature storage tank and a low-temperature storage tank with regulating valves respectively, and the second outlet branch pumps the molten salts to a molten salt inlet of the electric heating subsystem; on one hand, the salt melting furnace is used as salt melting equipment when the molten salt is melted for the first time and is used for initially melting the solid molten salt, and the liquid molten salt after initial melting is pumped into an external electric heating subsystem for temperature increase, reaches the working temperature of a high-temperature storage tank and a low-temperature storage tank and is pumped into the storage tank; on the other hand, after the photo-thermal power generation subsystem normally operates, the salt melting furnace can still be reserved as a buffer tank for use when the molten salt needs to be supplemented or the temperature of the molten salt needs to be raised in the operation process.
The molten salt outlet of the electric heating subsystem is communicated with the salt melting furnace; the electric heating subsystem adopts one or two of a photovoltaic power generation subsystem, a wind power generation subsystem and a power grid to supply power; the electric heating subsystem is connected with a power grid through a second power switch; the existing electric heating subsystems mostly directly adopt a power grid for power supply, the power consumption cost is high, and the effective utilization of wind and light abandoning cannot be realized.
The wind power generation electronic system is connected with a power grid or an electric heating subsystem through a third power switch; the photovoltaic power generation electronic system is connected with a power grid or an electric heating subsystem through a fourth power switch; during the peak period of power utilization, all the power generation subsystems are connected to a power grid to ensure power supply; during the power consumption trough, be used for the temperature raising of fused salt with unnecessary wind-powered electricity generation and photoelectricity, convert the waste electric power of original into the heat energy of fused salt, this part of heat energy is used for heating solid-state fused salt and melts when the primary salt melting.
Further, the electric heating subsystem comprises at least two groups of electric heaters connected in parallel. The arrangement of the plurality of groups of electric heater groups can realize the rapid adjustment of heating power, the number of the groups of the electric heater groups in operation can be adjusted according to the quantity of electric quantity which can be provided by the wind power generation subsystem and the photovoltaic power generation subsystem, and the flexibility of the whole system is improved.
Further, the third power switch and the fourth power switch are single-pole double-throw switches.
Furthermore, the fused salt inlet and outlet of each group of electric heater group are provided with regulating valves. The molten salt can be prevented from flowing into the electric heater group which is not electrified to cause freezing blockage.
Furthermore, the salt melting furnace is an electric heating type, and one or two of a photovoltaic power generation subsystem, a wind power generation subsystem and a power grid are adopted for supplying power. The salt melting furnace can also use abandoned wind and abandoned photoelectric power to supply power, can utilize renewable energy to the maximum extent, and reduces the salt melting cost.
The beneficial effects of the utility model reside in that: the fused salt can be melted and the temperature can be raised by utilizing the abandoned wind and abandoned photoelectricity of the wind power generation electronic system and the photovoltaic power generation subsystem, so that the salt melting cost is reduced and the consumption of renewable energy is promoted; meanwhile, the reliability and the safety of the renewable energy grid connection are improved through the integrated design of wind, light and heat storage.
Drawings
Fig. 1 is a system flow chart of the present invention.
In the figure: 1. built-in electric heating; 2. a first power switch; 3. a second power switch; 4. a third power switch; 5. a fourth power switch.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Examples 1,
A multi-sourced salt power generation system shown in fig. 1 comprises a wind power generation subsystem, a photovoltaic power generation subsystem, a photo-thermal power generation subsystem and an electric heating subsystem;
the photo-thermal power generation subsystem comprises a light and heat collecting module, a heat storage module and a steam power generation module; the heat storage module comprises a high-temperature storage tank, a low-temperature storage tank, a salt melting furnace and molten salt;
the fused salt outlet of the light-gathering and heat-collecting module is communicated with the high-temperature storage tank, and the fused salt inlet is communicated with the low-temperature storage tank through the low-temperature pump; the molten salt inlet of the steam power generation module is communicated with the high-temperature storage tank through a high-temperature pump, the molten salt outlet of the steam power generation module is communicated with the low-temperature storage tank, and the generated power is connected with a power grid through a first power switch 2;
the salt melting furnace is provided with a solid molten salt feeding hole, a first outlet branch and a second outlet branch, the first outlet branch pumps molten salts with different temperatures to a high-temperature storage tank and a low-temperature storage tank with regulating valves respectively, and the second outlet branch pumps the molten salts to a molten salt inlet of the electric heating subsystem.
The molten salt outlet of the electric heating subsystem is communicated with the salt melting furnace; the electric heating subsystem adopts one or two of a photovoltaic power generation subsystem, a wind power generation subsystem and a power grid to supply power; the electric heating subsystem is connected to the grid through a second power switch 3.
The wind power generation electronic system is connected with a power grid or an electric heating subsystem through a third power switch 4; the photovoltaic power generation system is connected with a power grid or an electric heating subsystem through a fourth power switch 5. The third power switch 4 and the fourth power switch 5 are single pole double throw switches.
In this embodiment, the electric heating subsystem includes four groups of electric heaters connected in parallel. The fused salt inlets and outlets of the four groups of electric heater groups are provided with regulating valves.
The salt melting furnace is of an electric heating type, an electric heating device 1 is arranged in the bottom of the salt melting furnace in the embodiment, and one or two of a photovoltaic power generation subsystem, a wind power generation subsystem and a power grid are adopted for supplying power.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A multisourced salt power generation system, characterized in that: the system comprises a wind power generation subsystem, a photovoltaic power generation subsystem, a photo-thermal power generation subsystem and an electric heating subsystem;
the photo-thermal power generation subsystem comprises a light and heat collecting module, a heat storage module and a steam power generation module; the heat storage module comprises a high-temperature storage tank, a low-temperature storage tank, a salt melting furnace and molten salt;
the fused salt outlet of the light and heat collecting module is communicated with the high-temperature storage tank, and the fused salt inlet is communicated with the low-temperature storage tank through the low-temperature pump; the steam power generation module is characterized in that a molten salt inlet is communicated with a high-temperature storage tank through a high-temperature pump, a molten salt outlet is communicated with a low-temperature storage tank, and the generated power is connected with a power grid through a first power switch;
the salt melting furnace is provided with a solid molten salt feeding hole, a first outlet branch and a second outlet branch, the first outlet branch pumps molten salts with different temperatures to a high-temperature storage tank and a low-temperature storage tank with regulating valves respectively, and the second outlet branch pumps the molten salts to a molten salt inlet of the electric heating subsystem;
the molten salt outlet of the electric heating subsystem is communicated with the salt melting furnace; the electric heating subsystem adopts one or two of a photovoltaic power generation subsystem, a wind power generation subsystem and a power grid to supply power; the electric heating subsystem is connected with a power grid through a second power switch;
the wind power generation electronic system is connected with a power grid or an electric heating subsystem through a third power switch; the photovoltaic power generation electronic system is connected with the power grid or the electric heating subsystem through a fourth power switch.
2. The multi-sourced salt power generation system of claim 1, wherein: the electric heating subsystem comprises at least two groups of electric heater groups connected in parallel.
3. The multi-sourced salt power generation system of claim 1, wherein: the second and third power switches are single pole double throw switches.
4. A multisourced salt power generation system as claimed in claim 2 wherein: the fused salt inlet and outlet of each group of electric heater group are provided with regulating valves.
5. The multi-sourced salt power generation system of claim 1, wherein: the salt melting furnace is of an electric heating type and adopts one or two of a photovoltaic power generation system, a wind power generation subsystem and a power grid to supply power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222826531.9U CN218884299U (en) | 2022-10-26 | 2022-10-26 | Multisource salt power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222826531.9U CN218884299U (en) | 2022-10-26 | 2022-10-26 | Multisource salt power generation system |
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| CN218884299U true CN218884299U (en) | 2023-04-18 |
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| CN202222826531.9U Active CN218884299U (en) | 2022-10-26 | 2022-10-26 | Multisource salt power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116565962A (en) * | 2023-07-11 | 2023-08-08 | 国网天津市电力公司电力科学研究院 | Wind-solar heat storage integrated system and wide-load peak shaving operation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116565962A (en) * | 2023-07-11 | 2023-08-08 | 国网天津市电力公司电力科学研究院 | Wind-solar heat storage integrated system and wide-load peak shaving operation method |
| CN116565962B (en) * | 2023-07-11 | 2023-10-31 | 国网天津市电力公司电力科学研究院 | Wind-solar heat storage integrated system and wide-load peak shaving operation method |
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