Solar photo-thermal power station fused salt storage device and system and photo-thermal power station
A technology for storage devices and photothermal power stations, which is applied in the field of solar photothermal power stations, can solve problems such as the economic impact of power stations and large molten salts, and achieve the effects of reducing molten salt losses, reducing impacts, and increasing utilization rates
Active Publication Date: 2021-02-23
ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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- Application Information
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Problems solved by technology
Since the molten salt pump has requirements on the minimum liquid level of the molten salt in the storage tank, there is a large amount of unusable molten salt at the bottom of the storage tank, which has a great impact on the economy of the power station
Method used
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Embodiment 1
[0032] This embodiment provides a solar thermal power plant molten salt storage device, see figure 1 , figure 2, is a schematic structural diagram of the molten salt storage device described in this embodiment. The molten salt storage device includes: a storage device body 100 for storing molten salt; at least one molten salt pump assembly 7 is arranged in the storage device body 100, and a molten salt pump is formed inside the molten salt pump assembly 7. and the accommodating space 70 for the molten salt, the molten salt pump assembly 7 is provided with at least one molten salt inlet 71, the molten salt inlet 71 extends below the minimum working liquid level of the molten salt pump, and the radial dimension of the accommodating space 70 is smaller than that of the storage The radial dimension of the device body 100; wherein, when the molten salt in the storage device body 100 reaches the minimum working liquid level of the molten salt pump, a negative pressure is formed in...
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The invention discloses a solar photo-thermal power station fused salt storage device and system and a photo-thermal power station. The solar photo-thermal power station fused salt storage device comprises a storage device body. A fused salt pump assembly part is arranged in the storage device body and provided with a fused salt inlet. The radial size of an accommodating space in the fused salt pump assembly part is smaller than that of the storage device body. According to the solar photo-thermal power station fused salt storage device and system and the photo-thermal power station, the fusedsalt pump assembly part is arranged in the storage device body, when fused salt in the storage device body reaches the lowest work liquid level of a fused salt pump, negative pressure is formed in the accommodating space of the fused salt pump assembly part, the fused salt in the storage device body can flow into the fused salt pump assembly part under the action of the pressure difference, and therefore, the liquid level of the fused salt in the fused salt pump assembly part is higher than the lowest work liquid level of the fused salt pump, the fused salt pump can work at the moment, and fused salt losses caused by the lowest work liquid level of the fused salt pump are reduced.
Description
technical field [0001] The invention relates to the technical field of solar thermal power plants, in particular to a molten salt storage device for solar thermal power plants. Background technique [0002] Solar high-temperature thermal power generation technology is an important direction for large-scale utilization of solar energy. The working medium used in solar high-temperature thermal power generation includes water (water vapor), molten salt, air, heat transfer oil, liquid metal and other heat transfer media. Among them, due to the fluctuation and discontinuity of sunlight, the solar thermal power generation system must have a large-scale heat storage system in order to continuously and stably generate electricity. Molten salt has the characteristics of high operating temperature, wide temperature range, good flow characteristics, and large heat capacity. As a heat storage medium, it can be used in heat storage systems to make up for the problem of unstable sunlight...
Claims
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IPC IPC(8): F24S60/30F24S80/30F24S20/20
CPCF24S60/30F24S20/20F24S80/30Y02E10/40
Inventor 毕文剑唐娟唐亚平戈晓闻王伊娜
Owner ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD