CN215930658U - Monomer energy storage molten salt jar based on natural circulation - Google Patents
Monomer energy storage molten salt jar based on natural circulation Download PDFInfo
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- CN215930658U CN215930658U CN202122264881.6U CN202122264881U CN215930658U CN 215930658 U CN215930658 U CN 215930658U CN 202122264881 U CN202122264881 U CN 202122264881U CN 215930658 U CN215930658 U CN 215930658U
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- valve
- molten salt
- cooler
- main tank
- energy storage
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- 150000003839 salts Chemical class 0.000 title claims abstract description 83
- 238000004146 energy storage Methods 0.000 title claims abstract description 30
- 239000000178 monomer Substances 0.000 title claims abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a monomer energy storage molten salt tank based on natural circulation, which comprises a heater, a main tank body, a hot molten salt outlet pipe, a cooler and a cold molten salt return pipe, wherein the heater is arranged on the main tank body; the cooler is positioned outside the main tank body, the heater is positioned in the main tank body and positioned at the lower side of the main tank body, an outlet on the side surface of the upper end of the main tank body is communicated with an inlet on the shell side of the cooler through a hot molten salt outlet pipe and a first valve, an outlet on the shell side of the cooler is communicated with an inlet on the side surface of the lower end of the main tank body through a cold molten salt return pipe through a second valve, and the hot molten salt outlet pipe is communicated with the cold molten salt return pipe through a third valve; a fourth valve is arranged at the bottom opening of the middle shell side of the cooler, and a fifth valve is arranged at the top opening of the middle shell side of the cooler; the bottom opening part of the main tank body is provided with a sixth valve, the top opening part of the main tank body is provided with a seventh valve, and the single energy storage molten salt tank can avoid emptying molten salt in the tank during maintenance.
Description
Technical Field
The utility model belongs to the technical field of energy storage and electricity storage, and relates to a monomer energy storage molten salt tank based on natural circulation.
Background
The fused salt energy storage technology comprises a double-tank fused salt energy storage technology and a single-tank fused salt energy storage technology. The double-tank molten salt energy storage technology is suitable for large-scale energy storage power stations, and has the advantages of large floor area, high investment and complex system. The single-tank fused salt energy storage technology is suitable for a distributed energy storage power station or other power station matched fused salt energy storage technologies, and is small in occupied area, simple in system and small in investment.
The core equipment of single jar fused salt energy storage technology is monomer fused salt jar, and this fused salt jar is internal with fused salt heating and fused salt cooling arrangement in a jar, and fused salt heating adopts the rubbish electricity or the low ebb electricity that abandon wind and abandon light more, and fused salt cooling adopts the heat exchanger to cool off. The heater has high heating efficiency and small volume, can use high-grade metal, so the corrosion resistance is stronger, but the cooling heat exchanger has large volume, complex working condition and easy failure. However, when the cooling heat exchanger fails, the existing single-tank technology can only be maintained by emptying all the molten salt in the tank, so that the waste amount of the molten salt is large, and the environmental pollution is serious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a monomer energy storage molten salt tank based on natural circulation, which can avoid emptying molten salt in the tank during maintenance.
In order to achieve the aim, the monomer energy storage molten salt tank based on natural circulation comprises a heater, a main tank body, a hot molten salt outlet pipe, a cooler and a cold molten salt return pipe;
the cooler is positioned outside the main tank body, the heater is positioned in the main tank body and positioned at the lower side of the main tank body, an outlet on the side surface of the upper end of the main tank body is communicated with an inlet on the shell side of the cooler through a hot molten salt outlet pipe and a first valve, an outlet on the shell side of the cooler is communicated with an inlet on the side surface of the lower end of the main tank body through a cold molten salt return pipe through a second valve, and the hot molten salt outlet pipe is communicated with the cold molten salt return pipe through a third valve;
a fourth valve is arranged at the bottom opening of the middle shell side of the cooler, and a fifth valve is arranged at the top opening of the middle shell side of the cooler;
and a sixth valve is arranged at the bottom opening of the main tank body, and a seventh valve is arranged at the top opening of the main tank body.
The cooler is a shell-and-tube heat exchanger.
A plurality of first thermocouples are arranged on the main tank body from top to bottom.
The spacing between adjacent first thermocouples was 0.5 m.
And second thermocouples are arranged at the inlets and the outlets of the first valve, the second valve and the third valve.
A third thermocouple is disposed within the cooler.
And a first electric tracing device is arranged on a pipeline between the cooler and the first valve and the second valve.
And a second electric heat tracing device is arranged on a pipeline between the cooler and the fourth valve and the fifth valve.
And a third electric heat tracing device is arranged on a pipeline between the main tank body and the sixth valve and the seventh valve.
The distance between the cooler and the first valve and the distance between the cooler and the second valve are both less than 50 mm;
the distances between the cooler and the fourth valve and between the cooler and the fifth valve are less than or equal to 50 mm;
the distance between the main tank body and the sixth valve and the distance between the main tank body and the seventh valve are less than or equal to 50 mm.
The utility model has the following beneficial effects:
when the monomer energy storage molten salt tank based on natural circulation is specifically operated, the cooler is directly isolated when a heat exchange tube in the cooler leaks because the cooler is arranged outside the main tank body, cold water in the tube side of the cooler and hot molten salt in the shell side of the cooler are emptied, the cooler is washed and then overhauled, and the cooler is continuously put into operation after overhauling is finished, so that the condition that all molten salt in the main tank body is emptied to maintain can be avoided, and the monomer energy storage molten salt tank based on natural circulation has a simple structure, is convenient to operate and has strong practicability.
Drawings
FIG. 1 is a schematic view of the present invention;
wherein, 1 is a heater, 2 is a main tank body, 3 is a hot-melt salt outflow pipe, 4 is a cold-melt salt backflow pipe, 5 is a cooler, 6 is a first valve, 7 is a second valve, 8 is a third valve, 9 is a fourth valve, 10 is a fifth valve, 11 is a sixth valve, and 12 is a seventh valve.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the utility model. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the monomer energy storage molten salt tank based on natural circulation comprises a heater 1, a main tank body 2, a hot molten salt outlet pipe 3, a cooler 5 and a cold molten salt return pipe 4;
the heater 1 is positioned in the main tank body 2 and positioned at the lower side of the main tank body 2, an outlet at the side surface of the upper end of the main tank body 2 is communicated with a shell side inlet of the cooler 5 through a hot-melt salt outlet pipe 3 and a first valve 6, and a shell side outlet of the cooler 5 is communicated with an inlet at the side surface of the lower end of the main tank body 2 through a cold-melt salt return pipe 4 through a second valve 7. The hot molten salt outlet pipe 3 is communicated with the cold molten salt return pipe 4 through a third valve 8.
The cooler 5 is positioned outside the main tank body 2, a fourth valve 9 is arranged at the bottom opening of the shell side of the cooler 5, and a fifth valve 10 is arranged at the top opening of the shell side of the cooler 5.
A sixth valve 11 is arranged at the bottom opening of the main tank body 2, and a seventh valve 12 is arranged at the top opening of the main tank body 2.
The distance between the cooler 5 and the first valve 6 and the second valve 7 is less than 50 mm.
The distances between the cooler 5 and the fourth valve 9 and the fifth valve 10 are less than or equal to 50 mm.
The distance between the main tank 2 and the sixth valve 11 and the seventh valve 12 is less than or equal to 50 mm.
A first electric tracing device is arranged on a pipeline between the cooler 5 and the first valve 6 and the second valve 7.
And a second electric tracing device is arranged on a pipeline between the cooler 5 and the fourth valve 9 and the fifth valve 10.
And a third electric heat tracing device is arranged on a pipeline between the main tank body 2 and the sixth valve 11 and the seventh valve 12.
A plurality of first thermocouples are arranged on the main tank body 2 from top to bottom, wherein the distance between every two adjacent first thermocouples is 0.5 m.
And second thermocouples are arranged at the inlets and the outlets of the first valve 6, the second valve 7 and the third valve 8.
A third thermocouple is arranged inside the cooler 5.
The cooler 5 is a shell-and-tube heat exchanger.
The specific working process of the utility model is as follows:
after the molten salt is heated by the heater, the temperature rises, the density is reduced, the molten salt flows from the bottom to the top of the main tank body 2, then the molten salt flows into the shell side of the cooler 5 through the hot molten salt outflow pipe 3, the working medium in the pipe side of the cooler 5 is cooling water, the working medium in the shell side of the cooler 5 is hot molten salt, the temperature of the hot molten salt is reduced after the hot molten salt passes through the cooler 5, the density is increased, the hot molten salt flows into the main tank body 2 through the cold molten salt backflow pipe 4, and then the hot molten salt is heated by the heater to complete circulation.
Because the cooler 5 is arranged outside the main tank body 2, when the heat exchange tube in the cooler 5 leaks, the cooler 5 is directly isolated, cold water on the tube side and hot molten salt on the shell side are drained, the cold water and the hot molten salt on the shell side are washed and then maintained, and the cooler is continuously put into operation after maintenance is finished.
When the heat exchange tube in the cooler 5 leaks, the specific operation flow is as follows:
1) stopping the flow of the working medium in the cooler 5, and emptying the working medium at the tube side of the cooler 5;
2) closing the first valve 6 and the second valve 7, isolating the cooler 5, and opening the third valve 8 to maintain the temperature of hot molten salt in the whole system to prevent solidification;
3) opening a fourth valve 9 and a fifth valve 10 to exhaust the hot molten salt on the shell side of the cooler 5;
4) injecting water into the cooler 5 through a fifth valve 10, and washing the shell side of the cooler 5;
5) maintaining the cooler 5, and injecting water to the pipe side of the cooler 5 after the maintenance is finished;
6) closing the fourth valve 9 and the fifth valve 10, and opening the first valve 6 and the second valve 7;
7) opening the electric tracing at the first valve 6 and the second valve 7 to dredge the solidified molten salt in the pipeline;
8) the temperature of the cooler 5 is controlled by controlling the water flow at the tube side of the cooler 5 to prevent the over-temperature;
9) opening the seventh valve 12, and injecting new molten salt into the main tank body 2 until the tank body is full;
10) the third valve 8 is closed, and the opening degree of the third valve 8 is monitored through a thermocouple to prevent the molten salt in the pipe from being solidified;
11) and the system resumes operation.
The utility model can realize the on-line maintenance of the cooler 5, has small loss of molten salt and is environment-friendly, and the safety and the economical efficiency of equipment are improved.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122264881.6U CN215930658U (en) | 2021-09-17 | 2021-09-17 | Monomer energy storage molten salt jar based on natural circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122264881.6U CN215930658U (en) | 2021-09-17 | 2021-09-17 | Monomer energy storage molten salt jar based on natural circulation |
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| Publication Number | Publication Date |
|---|---|
| CN215930658U true CN215930658U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122264881.6U Active CN215930658U (en) | 2021-09-17 | 2021-09-17 | Monomer energy storage molten salt jar based on natural circulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654388A (en) * | 2021-09-17 | 2021-11-16 | 西安热工研究院有限公司 | A single energy storage molten salt tank based on natural circulation |
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2021
- 2021-09-17 CN CN202122264881.6U patent/CN215930658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654388A (en) * | 2021-09-17 | 2021-11-16 | 西安热工研究院有限公司 | A single energy storage molten salt tank based on natural circulation |
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