CN110243085A - A kind of double salt storage tank systems of solar energy thermo-power station - Google Patents
A kind of double salt storage tank systems of solar energy thermo-power station Download PDFInfo
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- CN110243085A CN110243085A CN201910440281.5A CN201910440281A CN110243085A CN 110243085 A CN110243085 A CN 110243085A CN 201910440281 A CN201910440281 A CN 201910440281A CN 110243085 A CN110243085 A CN 110243085A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 369
- 238000010248 power generation Methods 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 10
- 230000009977 dual effect Effects 0.000 claims 2
- 238000005452 bending Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000005338 heat storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
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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
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- Sustainable Energy (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Hybrid Cells (AREA)
Abstract
The invention discloses a kind of double salt storage tank systems of solar energy thermo-power station, including the first fused salt storage tank, the second fused salt storage tank, the first fused salt storage tank connecting pipe, the second fused salt storage tank connecting pipe, control valve, control valve, fused salt entrance；First fused salt storage tank connecting pipe is drawn from the first fused salt storage tank and is connected to fused salt entrance, and the second fused salt storage tank connecting pipe is drawn from the second fused salt storage tank and is connected to fused salt entrance；Control valve is set on the first fused salt storage tank connecting pipe, control valve is set on the second fused salt storage tank connecting pipe；It further include that fused salt pumps out device, for pumping out high-temperature molten salt；Fused salt pumps out device and is connected respectively with the first fused salt storage tank and the second fused salt storage tank.When one of fused salt storage tank leaks, maintenance can be emptied, while starting another salt storage tank normal power generation.Two salt storage tank mutual backup ensure that the stability and safety of photo-thermal power station power generation.
Description
Technical Field
The invention relates to the field of solar thermal power generation, in particular to a high-temperature molten salt storage tank system of a solar thermal power station.
Background
Solar high-temperature thermal power generation technology is an important direction for solar scale utilization. The working media adopted by the solar high-temperature thermal power generation include water (steam), molten salt, air, heat conduction oil, liquid metal, other heat conduction media and the like. Due to the fluctuation and discontinuity of solar illumination, a large-scale heat storage system is required in the solar photo-thermal power generation system to continuously and stably generate power. The fused salt has the characteristics of high use temperature, wide temperature range, good flow characteristic, large heat capacity and the like, can just make up the problem of unstable solar illumination when being applied to a heat storage system as a heat storage working medium, and is the most widely applied solar heat storage working medium at present.
The equipment for storing the heat storage medium molten salt is called a storage tank, the storage tank for storing the hot molten salt is called a hot salt tank, and the storage tank for storing the cold molten salt is called a cold salt tank. The storage tank is composed of a storage tank bottom plate, a storage tank edge plate, a storage tank wall plate, a storage tank vault, a storage tank foundation and the like.
Traditional storage tank adopts the individual layer jar to a storage tank for light and heat power station is often bulky, and the temperature alternation is frequent, and the load that the storage tank bore is complicated and unstable, consequently, the storage tank has very big possibility to take place to become invalid, leads to the fused salt to reveal. The existing American Crescent Dunes and the existing Gemasular photothermal power stations in Spain are caused to stop for a long time due to the leakage of storage tanks, and serious economic loss is caused. Meanwhile, the storage tank is huge in size, the adopted molten salt pump is often a high-temperature-resistant long-shaft vertical pump, and the molten salt pump is often high in cost and inconvenient to maintain.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a solar thermal power station double-high-temperature molten salt storage tank system.
The technical scheme of the invention is as follows:
a solar photo-thermal power station double-high-temperature molten salt storage tank system comprises a first molten salt storage tank [5], a second molten salt storage tank [6], a first molten salt storage tank communicating pipeline [21], a second molten salt storage tank communicating pipeline [31], a control valve [2], a control valve [3] and a molten salt inlet [1 ]; wherein,
the first molten salt storage tank communicating pipeline [21] is led out from the first molten salt storage tank [5] and is communicated with the molten salt inlet [1], and the second molten salt storage tank communicating pipeline [31] is led out from the second molten salt storage tank [6] and is communicated with the molten salt inlet [1 ];
a control valve [2] is arranged on the first molten salt storage tank communicating pipeline [21], and a control valve [3] is arranged on the second molten salt storage tank communicating pipeline [31 ];
the molten salt pump-out device is used for pumping out high-temperature molten salt; the molten salt pumping-out device is respectively connected with the first molten salt storage tank [5] and the second molten salt storage tank [6 ].
Preferably, the molten salt pumping-out device is a molten salt pump; a molten salt outlet is respectively arranged above the vault of the first molten salt storage tank and the vault of the second molten salt storage tank, a molten salt pump is respectively arranged above the molten salt outlet of the first molten salt storage tank and the molten salt outlet of the second molten salt storage tank, and high-temperature molten salt is pumped out through the molten salt pumps; the molten salt pump is a long-shaft vertical pump.
Preferably, the molten salt pumping-out device is a small-volume molten salt tank, a molten salt pump is arranged on the small-volume molten salt tank, and the molten salt pump is longer than the vertical pump; the small-volume molten salt tank is connected with the first molten salt storage tank and the second molten salt storage tank through a communication pipeline, and a control valve is arranged on the communication pipeline; the foundation of the small-volume molten salt tank is lower than the foundation of the first molten salt storage tank and the second molten salt storage tank; and high-temperature molten salt flows into the small-volume molten salt tank through the communicating pipeline and is pumped out through a molten salt pump of the small-volume molten salt tank.
Preferably, the number of the small-volume molten salt tanks is one, and the small-volume molten salt tank [13] is communicated with the first molten salt storage tank [5] through a pipeline [15] and is communicated with the second molten salt storage tank [6] through a pipeline [11 ]; the pipeline [15] is provided with a control valve [14], and the pipeline [11] is provided with a control valve [10 ].
Preferably, the first molten salt storage tank [5] and the second molten salt storage tank [6] are respectively connected with at least one small-volume molten salt tank.
Preferably, the tank foundation of the first molten salt storage tank [5] is higher than that of the second molten salt storage tank [6], and the height difference H between the two is greater than or equal to the lowest starting liquid level height of the molten salt pump of the second molten salt storage tank [6 ]; the first molten salt storage tank [5] is connected with the second molten salt storage tank [6] through a communicating pipeline [9], and a control valve [8] is arranged on the communicating pipeline [9 ]; the high-temperature molten salt in the first molten salt storage tank [5] can flow into the second molten salt storage tank [6] through the communicating pipeline [9 ].
Preferably, storage tank flow equalizing devices are respectively arranged in the first molten salt storage tank and the second molten salt storage tank, and each storage tank flow equalizing device is respectively connected with the communication pipeline of the first molten salt storage tank or the communication pipeline of the second molten salt storage tank. The detailed structure of the storage tank flow equalizing device can be seen in CN207894055U, a salt feeding device and a system of a molten salt storage tank.
Preferably, the storage tank flow equalizing devices are respectively arranged at positions close to the bottom plate of the first molten salt storage tank and the bottom plate of the second molten salt storage tank.
Preferably, one end of a communication pipeline [9] between the first molten salt storage tank [5] and the second molten salt storage tank [6] is arranged at a position, close to the bottom plate, of the first molten salt storage tank [5], and the other end of the communication pipeline is arranged in the second molten salt storage tank [6] and is connected with a storage tank flow equalizing device.
Preferably, a communication pipeline between the first molten salt storage tank [5] and the small-volume molten salt tank and a communication pipeline between the second molten salt storage tank [6] and the small-volume molten salt tank are arranged to form a horizontal pi-shaped bent structure.
Preferably, the communication pipeline [9] is arranged in a horizontal pi-shaped bent structure.
Preferably, a control valve on a pipeline between the small-volume molten salt tank and the first molten salt storage tank [5] and a control valve on a pipeline between the small-volume molten salt tank and the second molten salt storage tank [6] need to control the flow of molten salt entering the molten salt tank 13, so that the liquid level in the molten salt tank 13 is ensured to be stabilized in a reasonable interval.
Preferably, the first molten salt storage tank 5, the second molten salt storage tank 6 and the molten salt tank 13 are made of 347H materials.
The application of the high-low-position high-temperature molten salt storage tank system comprising the solar photo-thermal power station in solar thermal power generation.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a double high-temperature molten salt storage tank system is adopted, the two storage tanks are mutually standby, once one of the two storage tanks leaks, the other high-temperature storage tank can normally work, the system operation is not influenced, the maintenance is convenient, and the stability and the safety of the power generation of the photo-thermal power station are ensured.
2. According to the scheme of the high-low level fused salt storage tank, the two storage tanks have height difference, fused salt in the high-temperature fused salt storage tank flows to the low-temperature fused salt storage tank through the bottom pipeline, the fused salt liquid level of the high-level fused salt storage tank can be lower than the lowest starting liquid level of the fused salt pump on the high-level fused salt storage tank, the weight of unusable salt in the high-level fused salt storage tank due to the lowest starting liquid level of the fused salt pump is reduced, the quality of usable high-temperature fused salt in a system is improved, and the integral power generation capacity of.
3. The invention can adopt the combination of the small-volume molten salt tank and the molten salt pump with shorter length to replace the function of the long-shaft vertical molten salt pump with higher cost on the molten salt storage tank, thereby facilitating the overhaul and maintenance of the molten salt pump, enhancing the reliability of the system and greatly reducing the cost.
4. The ground height of the high higher level fused salt storage tank or the low level fused salt storage tank of small volume fused salt groove ground is low, can further reduce because the minimum start-up liquid level of fused salt pump leads to can not utilize salt weight, improves the holistic income in power station.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
FIG. 1 is a schematic diagram of a high and low molten salt storage tank system according to example 1 of the present invention;
FIG. 2 is a schematic diagram of a high-low molten salt storage tank system according to embodiment 2 of the invention.
Reference numerals: 1-high temperature molten salt inlet; 2-a molten salt inlet control valve of a high-level molten salt storage tank; 3-a molten salt inlet control valve of the low-level molten salt storage tank; 21-a communicating conduit; 31-a communicating conduit; 4-molten salt outlet; 5-high molten salt storage tank; 6-low-level molten salt storage tank; 7-storage tank flow equalizing device; 72-tank flow straightener; 8-control valve; 9-a connecting pipe; 10-control valve; 11-a communicating conduit; 12-a molten salt tank molten salt pump; 13-molten salt tank; 14-a control valve; 15-connecting the pipeline.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings. In the following embodiments, the high-level molten salt storage tank is also referred to as a high-level storage tank, the low-level molten salt storage tank is also referred to as a low-level storage tank, and the low-temperature molten salt storage tank is also referred to as a cold tank.
Example 1
As shown in figure 1, a high low level high temperature fused salt storage tank system of solar energy light and heat power station, including high-order fused salt storage tank 5, low level fused salt storage tank 6, high-order fused salt storage tank communicating pipe 21, low level fused salt storage tank communicating pipe 31, control flap 2, control flap 3 and fused salt entry 1, control flap 2 sets up on fused salt entry 1 and the communicating pipe 21 between high level fused salt storage tank 5, control flap 3 sets up on fused salt entry 1 and the communicating pipe 31 between low level fused salt storage tank 6, high level fused salt storage tank 5 and 6 vault tops of low level fused salt storage tank set up fused salt export 4 respectively, fused salt export 4 tops respectively have a fused salt pump.
Wherein, the storage tank basis of the lower level fused salt storage tank 6 of the storage tank basis of high level fused salt storage tank 5 is high, and the difference in height H between them is greater than or equal to the minimum starting liquid level height of the fused salt pump of low level fused salt storage tank 6. The arrangement enables the molten salt which cannot be utilized at the bottom of the high-level storage tank to flow into the low-level storage tank through the communication pipeline, so that the weight of the molten salt which cannot be utilized in the system is reduced.
The high-level molten salt storage tank 5 and the low-level molten salt storage tank 6 are connected through a communicating pipeline 9, and a control valve 8 is arranged on the communicating pipeline 9.
The communicating pipeline 21 is connected with the storage tank flow equalizing device 7 at a position close to the bottom plate in the high-level molten salt storage tank 5, and the communicating pipeline 31 is connected with the storage tank flow equalizing device 72 at a position close to the bottom plate in the low-level molten salt storage tank 6. One end of the communicating pipeline 9 is arranged at the position of the high-level molten salt storage tank 5 close to the bottom plate, and the other end of the communicating pipeline is arranged in the low-level molten salt storage tank 6 and is connected with the storage tank flow equalizing device 72. When the system is in operation, the control valve 8 on the communicating pipeline 9 is in a closed state.
Preferably, the communication ducts 9 are arranged in a horizontal pi-bend configuration to counteract the stresses caused by thermal expansion deformations of the tank.
In this embodiment, 347H is preferably used as the material of the bodies of the high-level molten salt storage tank 5 and the low-level molten salt storage tank 6.
When the solar thermal power station high-low-level high-temperature molten salt storage tank system of the embodiment normally operates, the heat collector finishes absorbing high-temperature molten salt to enter the low-level molten salt storage tank 6 through the high-temperature molten salt inlet 1 and stores the high-temperature molten salt in the storage tank. When power generation is needed, high-temperature molten salt is pumped out by a molten salt pump above the molten salt outlet 4 of the low-level molten salt storage tank 6, and returns to the low-temperature molten salt storage tank after heat exchange of the heat exchange system. The high-level molten salt storage tank 5 is used for standby at this time.
When the low-level storage tank 6 fails and leaks, the molten salt pump of the low-level storage tank 6 is started, molten salt in the low-level storage tank 6 enters the cold tank through heat exchange of the heat exchange system, the low-level storage tank 6 is emptied and overhauled, and the high-level storage tank 5 and the cold tank normally run to generate power.
When 5 inefficacy emergence leaks of high-order fused salt storage tank, the fused salt pump of low level fused salt storage tank 6 starts, and the fused salt goes heat transfer system heat transfer and gets into cold jar in the low level fused salt storage tank 6, opens pipeline control valve 8 simultaneously, and the fused salt gets into low level fused salt storage tank 6 in the high-order fused salt storage tank 5, and 5 evacuation overhauls of high-order fused salt storage tank close control valve 8 simultaneously. And the low-level molten salt storage tank 6 and the cold tank normally operate to generate power.
Or, when the high-level molten salt storage tank 5 fails and leaks, the pipeline control valve 8 is closed, the molten salt pump of the high-level molten salt storage tank 5 is started, the molten salt in the high-level molten salt storage tank 5 is subjected to heat exchange by the heat exchange system and enters the cold tank, and the high-level molten salt storage tank 5 is emptied and overhauled. And the low-level molten salt storage tank 6 and the cold tank normally operate to generate power.
In the present embodiment, the tank foundation of the high-level tank 5 and the tank foundation of the low-level tank 6 have a height difference, but in other embodiments, the height difference may not exist, and the high-level tank 5 and the low-level tank 6 have the same tank foundation.
Example 2
In this embodiment, compare with embodiment 1, the high low level high temperature fused salt storage tank system of solar energy light and heat power station has increased a little volume fused salt groove 13, and fused salt groove 13 passes through pipeline 15 to be connected with high level fused salt storage tank 5, is connected with low level fused salt storage tank 6 through pipeline 11, is equipped with control valve 14 on the pipeline 15, is equipped with control valve 10 on the pipeline 11. The molten salt tank 13 is provided with a molten salt pump 12, and the molten salt pump 12 is shorter than the vertical pump. The foundation of the high-level molten salt storage tank 5 and the low-level molten salt storage tank 6 is higher than that of the molten salt tank 13.
When the system normally operates, the molten salt in the low-level molten salt storage tank 6 enters the molten salt tank 13 through the pipeline 11, is pumped out by the molten salt pump 12 and enters the heat exchange system for heat exchange. The control valve 10 is required to control the flow of the molten salt entering the molten salt tank 13, so as to ensure that the liquid level in the molten salt tank 13 is stabilized in a reasonable interval.
When the high-level molten salt storage tank 5 fails and leaks, the control valves 14 of the high-level molten salt storage tank 5 and the molten salt tank are opened, the control valves 10 of the molten salt tank 13 and the low-level molten salt storage tank 6 are closed simultaneously, high-temperature molten salt flows to the molten salt tank 13 through the pipeline 15, and the molten salt is drained and overhauled through the molten salt pump 12. The pipeline control valve 14 is required to control the flow of the molten salt entering the molten salt tank 13, so as to ensure that the liquid level in the molten salt tank is stabilized in a reasonable interval. After evacuation, the control valve 14 is closed. The low-level molten salt storage tank 6 and the molten salt tank 13 normally operate, and the power generation of the power station is not influenced.
When the low-level molten salt storage tank 6 fails and leaks, the control valves 10 of the low-level molten salt storage tank 6 and the molten salt tank are opened, the control valves 14 of the molten salt tank 13 and the high-level storage tank 5 are closed simultaneously, high-temperature molten salt flows to the molten salt tank 13 from the pipeline 11, and the molten salt is drained and overhauled through the molten salt pump 12. After evacuation, the control valve 10 is closed. The high-level storage tank 5 and the molten salt tank 13 normally operate, and the power generation of the power station is not influenced.
Because the volume ratio of light and heat power station storage tank is bigger, therefore the molten salt pump that adopts on the storage tank is the major axis vertical pump, and this pump is higher to the technology and the precision requirement of processing, therefore its cost is also higher. Meanwhile, the pump body is longer and goes deep into the storage tank, so that the maintenance and overhaul of the pump are difficult. In this embodiment, the system has cancelled the molten salt pump on high-order molten salt storage tank 5 and the low level molten salt storage tank 6, adopts small volume molten salt groove and the shorter molten salt pump of length to combine to replace, has greatly reduced the holistic cost of system, is convenient for simultaneously the maintenance and the maintenance of molten salt pump. When the molten salt pump 12 on the molten salt tank 13 needs to be overhauled or maintained, the control valve 10 and the control valve 14 are closed at the same time, molten salt in the molten salt tank 13 is emptied, the overhaul and maintenance of the molten salt pump can be carried out, and the reliability and stability of the system are enhanced. In order to further ensure the stability of the system operation, a molten salt pump can be respectively arranged above the molten salt outlets of the high-level storage tank and the low-level storage tank; a communicating pipeline can be arranged between the high-level storage tank and the low-level storage tank, and a control valve is arranged on the communicating pipeline.
In the present embodiment, the number of the small-volume molten salt bath 13 is set to one, but the present invention is not limited to the number of the small-volume molten salt bath 13, and those skilled in the art can select other numbers of the small-volume molten salt bath 13 to set them according to simple modifications.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (11)
1. A double-high-temperature molten salt storage tank system of a solar photo-thermal power station is characterized by comprising a first molten salt storage tank [5], a second molten salt storage tank [6], a first molten salt storage tank communicating pipeline [21], a second molten salt storage tank communicating pipeline [31], a control valve [2], a control valve [3] and a molten salt inlet [1 ]; wherein the first molten salt storage tank communicating pipeline [21] is led out from the first molten salt storage tank [5] and is communicated with the molten salt inlet [1], and the second molten salt storage tank communicating pipeline [31] is led out from the second molten salt storage tank [6] and is communicated with the molten salt inlet [1 ];
a control valve [2] is arranged on the first molten salt storage tank communicating pipeline [21], and a control valve [3] is arranged on the second molten salt storage tank communicating pipeline [31 ];
the molten salt pump-out device is used for pumping out high-temperature molten salt; the molten salt pumping-out device is respectively connected with the first molten salt storage tank [5] and the second molten salt storage tank [6 ].
2. The solar photothermal power station dual high temperature molten salt storage tank system of claim 1 wherein said molten salt pumping out device is a molten salt pump; a molten salt outlet is respectively arranged above the vault of the first molten salt storage tank and the vault of the second molten salt storage tank, a molten salt pump is respectively arranged above the molten salt outlet of the first molten salt storage tank and the molten salt outlet of the second molten salt storage tank, and high-temperature molten salt is pumped out through the molten salt pumps; the molten salt pump is a long-shaft vertical pump.
3. The solar photothermal power station double high temperature molten salt storage tank system according to claim 1, wherein the molten salt pumping-out device is a small volume molten salt tank, a molten salt pump is arranged on the small volume molten salt tank, and the molten salt pump is shorter than the vertical pump; the small-volume molten salt tank is connected with the first molten salt storage tank and the second molten salt storage tank through a communication pipeline, and a control valve is arranged on the communication pipeline; the foundation of the small-volume molten salt tank is lower than the foundation of the first molten salt storage tank and the second molten salt storage tank; and high-temperature molten salt flows into the small-volume molten salt tank through the communicating pipeline and is pumped out through a molten salt pump of the small-volume molten salt tank.
4. The solar photothermal power station double high temperature molten salt storage tank system according to claim 3, wherein the number of the small volume molten salt tank is one, and the small volume molten salt tank [13] is communicated with the first molten salt storage tank [5] through a pipeline [15] and communicated with the second molten salt storage tank [6] through a pipeline [11 ]; the pipeline [15] is provided with a control valve [14], and the pipeline [11] is provided with a control valve [10 ].
5. The solar photothermal power station double high temperature molten salt storage tank system according to claim 3, wherein the first molten salt storage tank [5] and the second molten salt storage tank [6] are respectively connected with at least one small volume molten salt tank.
6. The solar thermal power station double-high-temperature molten salt storage tank system according to claim 1, wherein the tank foundation of the first molten salt storage tank [5] is higher than the tank foundation of the second molten salt storage tank [6], and the height difference H between the two is greater than or equal to the lowest starting liquid level height of a molten salt pump of the second molten salt storage tank [6 ]; the first molten salt storage tank [5] is connected with the second molten salt storage tank [6] through a communicating pipeline [9], and a control valve [8] is arranged on the communicating pipeline [9 ]; the high-temperature molten salt in the first molten salt storage tank [5] can flow into the second molten salt storage tank [6] through the communicating pipeline [9 ].
7. The dual-high-temperature molten salt storage tank system of the solar photo-thermal power station of any one of claims 1 to 6, wherein storage tank flow equalizing devices are respectively arranged in the first molten salt storage tank and the second molten salt storage tank, and each storage tank flow equalizing device is respectively connected with a pipeline communicated with the first molten salt storage tank or a pipeline communicated with the second molten salt storage tank; the storage tank flow equalizing device is respectively arranged at the position close to the bottom plate of the first molten salt storage tank and the position close to the bottom plate of the second molten salt storage tank.
8. The solar thermal power station double-high-temperature molten salt storage tank system according to claim 7, wherein one end of a communication pipeline [9] between the first molten salt storage tank and the second molten salt storage tank is arranged at a position, close to the bottom plate, of the first molten salt storage tank [5], and the other end of the communication pipeline is arranged in the second molten salt storage tank [6] and is connected with a storage tank flow equalizing device.
9. The solar photothermal power station double high temperature molten salt storage tank system according to any one of claims 3-5, wherein the communication pipeline of the first molten salt storage tank and the small-volume molten salt tank, and the communication pipeline of the second molten salt storage tank and the small-volume molten salt tank are arranged in a horizontal pi-shaped bending structure.
10. The solar photothermal power station double high temperature molten salt storage tank system according to claim 6, wherein said communication pipe [9] is arranged in a horizontal pi-shaped bent structure.
11. Use of a dual high temperature molten salt storage tank system comprising a solar photothermal power station according to claims 1-10 in solar thermal power generation.
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| CN201910440281.5A CN110243085B (en) | 2019-05-24 | 2019-05-24 | Double-high-temperature molten salt storage tank system of solar thermal power station |
| CN202011347399.2A CN113218093B (en) | 2019-05-24 | 2019-05-24 | Double-high-temperature molten salt storage tank system of solar thermal power station and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645723A (en) * | 2019-09-24 | 2020-01-03 | 浙江中控太阳能技术有限公司 | Air seal self-circulation heating device |
| CN111879019A (en) * | 2020-06-12 | 2020-11-03 | 浙江大学 | System for detecting fused salt leakage of photo-thermal power generation heat storage device by utilizing electrode plate |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110243085B (en) | 2021-02-23 |
| CN113218093A (en) | 2021-08-06 |
| CN113218093B (en) | 2023-03-31 |
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