CN110940217A - Single-tank high-temperature energy storage device - Google Patents
Single-tank high-temperature energy storage device Download PDFInfo
- Publication number
- CN110940217A CN110940217A CN201911423125.4A CN201911423125A CN110940217A CN 110940217 A CN110940217 A CN 110940217A CN 201911423125 A CN201911423125 A CN 201911423125A CN 110940217 A CN110940217 A CN 110940217A
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- China
- Prior art keywords
- inner container
- heat
- conduction oil
- fused salt
- heat conduction
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- 238000004146 energy storage Methods 0.000 title claims abstract description 22
- 150000003839 salts Chemical class 0.000 claims abstract description 48
- 238000005485 electric heating Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000011232 storage material Substances 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 28
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A single-tank high-temperature energy storage device comprises a shell and an inner container, wherein a semicircular heat exchange tube is welded on the outer wall of the inner container in a spiral manner, a heat conduction oil inlet is formed below the semicircular heat exchange tube, and a heat conduction oil outlet is formed above the semicircular heat exchange tube; a tank material port is formed in the upper portion of the inner container, fused salt is contained in the inner container, an electric heating device is further arranged in the inner container, a heating pipe of the electric heating device is embedded in the fused salt, and a power-on end of the electric heating device penetrates through the inner container to be connected with a heating cable. The invention overcomes the defects of the prior art, the fused salt in the application is only used as an energy storage material, and the heat conduction oil is used as a heat transfer medium, so that the problem of solidification and blockage of the material in the semicircular heat exchange tube when the fused salt is used as the heat transfer medium is avoided; and the heat conduction oil and the fused salt exchange heat through the inner container wall, so that the heat conduction oil and the fused salt are completely isolated, and the safety risks of combustion, explosion and the like caused by the fact that the heat conduction oil is leaked due to corrosion of the fused salt to the heat exchange pipe, particularly a welding point, caused by the fact that the heat conduction oil is arranged in the inner container are avoided.
Description
Technical Field
The invention relates to the technical field of energy storage devices, in particular to a single-tank high-temperature energy storage device.
Background
The molten salt heat storage is one of the common mainstream technologies of high-temperature heat storage, and the common molten salt of the conventional molten salt energy storage system is a heat transfer medium even though an energy storage material is used as an energy storage material, so that the system is suitable for a large-scale system, once the system is started, the system can be operated all the time, the molten salt is required to be kept in a liquid state, and the molten salt is prevented from being solidified in a pipeline or a molten salt tank.
However, for some medium and small-sized systems, many application scenes are discontinuous operation and sometimes operate according to seasons, and if energy is consumed and the molten salt is kept in a molten state all the time, energy is wasted, so that the method is not suitable for the technical scheme that the molten salt is used as an energy storage material and a heat transfer medium.
According to the single-tank molten salt high-temperature energy storage device, the molten salt is used as the energy storage material, the heat conduction oil is used as the heat transfer medium, the device is high in safety and can be started and stopped as required, the situation that the molten salt is solidified to block a pipeline is avoided, the material in the molten salt tank is solidified and can be heated and melted again, and the flexible application requirements of small and medium-sized high-temperature energy storage systems are met.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a single-tank high-temperature energy storage device which overcomes the defects of the prior art and is reasonable in design, the fused salt in the application is only used as an energy storage material, and heat conduction oil is used as a heat transfer medium, so that the problem of solidification and blockage of materials in a semicircular heat exchange tube when the fused salt is used as the heat transfer medium is avoided; and the heat conduction oil and the fused salt exchange heat through the inner container wall, so that the heat conduction oil and the fused salt are completely isolated, and the safety risks of combustion, explosion and the like caused by the fact that the heat conduction oil is leaked due to corrosion of the fused salt to the heat exchange pipe, particularly a welding point, caused by the fact that the heat conduction oil is arranged in the inner container are avoided.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a single-tank high-temperature energy storage device comprises a shell and an inner container, wherein the inner container is fixedly arranged in an inner cavity of the shell, a semicircular heat exchange tube is welded on the outer wall of the inner container in a spiral shape, the lower part of the semicircular heat exchange tube is fixedly connected with one end of a heat conduction oil inlet, the other end of the heat conduction oil inlet penetrates through the shell to be connected with a port of a heat utilization system, the upper part of the semicircular heat exchange tube is fixedly connected with one end of a heat conduction oil outlet, and the other end of the heat conduction oil outlet is connected with the port of the; the electric heating device is characterized in that a tank opening is formed in the upper portion of the inner container, fused salt is contained in the inner container, an electric heating device is further arranged in the inner container, a heating pipe of the electric heating device is buried in the fused salt, and a power-on end of the electric heating device penetrates through the upper surface of the inner container and is connected with a heating cable.
Preferably, an insulating layer is filled between the outer shell and the inner container.
Preferably, a heat conducting sheath is fixedly sleeved on the outer surface of the heating pipe of the electric heating device.
The invention provides a single-tank high-temperature energy storage device. The method has the following beneficial effects:
1. the fused salt is only used as an energy storage material, an electric heating device is arranged in the liner, and the material can be heated in the liner again after being solidified.
2. The heat conducting oil is used as a heat transfer medium, so that the problem of solidification and blockage of materials in the semicircular heat exchange tube when the molten salt is used as the heat transfer medium is solved.
3. Heat transfer oil and fused salt exchange heat through the inner container wall, the heat transfer oil and the fused salt are completely isolated, and the heat transfer oil pipeline is prevented from being internally arranged in the inner container, so that the heat transfer oil is prevented from being leaked to cause safety risks such as combustion and explosion due to corrosion of the fused salt to the heat transfer pipe, particularly a welding point.
Drawings
In order to more clearly illustrate the present invention or the prior art solutions, the drawings that are needed in the description of the prior art will be briefly described below.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic structural view of the inner container of the present invention;
the reference numbers in the figures illustrate:
1. a housing; 2. an inner container; 3. a semicircular heat exchange tube; 4. a heat transfer oil inlet; 5. a heat conducting oil outlet; 6. a material tank opening; 7. melting a salt; 8. an electric heating device; 9. and (7) an insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings.
As shown in fig. 2, a single-tank high-temperature energy storage device comprises a shell 1 and an inner container 2, wherein the inner container 2 is fixedly installed in an inner cavity of the shell 1, a semicircular heat exchange tube 3 is welded on the outer wall of the inner container 2 in a spiral shape, one end of a heat conduction oil inlet 4 is fixedly connected below the semicircular heat exchange tube 3, the other end of the heat conduction oil inlet 4 penetrates through the shell 1 to be connected with a port of a heat utilization system, one end of a heat conduction oil outlet 5 is fixedly connected above the semicircular heat exchange tube 3, and the other end of the heat conduction oil outlet 5 is connected with the port of the; a tank opening 6 is arranged above the inner container 2, fused salt 7 is contained in the inner container 2, an electric heating device 8 is further arranged in the inner container 2, a heating pipe of the electric heating device 8 is embedded in the fused salt 7, and the electrifying end of the electric heating device 8 penetrates through the upper surface of the inner container 2 to be connected with a heating cable.
The working principle is as follows: in valley electricity, the electric heating device 8 is connected with an external power supply through a heating cable, so that the heating pipe of the electric heating device 8 heats the molten salt 7 in the inner container 2, and heat can be accumulated in the molten salt 7 in valley electricity, in the embodiment, the temperature of the molten salt 7 can be accurately controlled through the silicon controlled rectifier, heating is stopped when the temperature reaches the upper limit temperature, and heat exchange is carried out between heat conduction oil in the semicircular heat exchange pipe 3 and the molten salt 7 through the container wall of the inner container 2; therefore, in the peak electricity period, the external power supply of the electric heating device 8 is cut off, and heat is supplied to heat utilization systems such as a steam generator and industrial heating through heat conduction oil circulation in the semicircular heat exchange tube 3.
In the whole process, the fused salt 7 is only used as an energy storage material, so that the fused salt 7 can be heated in the fused salt tank again after being solidified, and the heat conduction oil in the semicircular heat exchange tube 3 is used as a heat transfer medium, so that the problem of material solidification and blockage in the pipeline when the fused salt 7 is used as the heat transfer medium is avoided. The heat conduction oil and the fused salt are subjected to heat exchange through the container wall, the heat conduction oil and the fused salt are completely isolated, the situation that the heat conduction oil pipeline is arranged in a tank is avoided, and safety risks such as combustion and explosion caused by the fact that the heat conduction oil is leaked due to corrosion of the fused salt to the heat exchange pipe, particularly a welding point is avoided.
In this embodiment, an insulating layer 9 is filled between the outer shell 1 and the inner container 2. The heat-insulating device is used for insulating the inner container 2 so as to prevent the heat in the inner container 2 and the semicircular heat exchange tubes 3 from being dissipated.
In this embodiment, a heat conducting sheath is fixedly sleeved on the outer surface of the heating tube of the electric heating device 8. The heat conduction sheath can be a stainless steel sheath, so that the heating pipe of the electric heating device 8 is protected, the heating pipe of the electric heating device 8 can be prevented from being in direct contact with the molten salt 7, and the safety of the electric heating device 8 is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides a single jar high temperature energy memory, includes shell (1) and inner bag (2), its characterized in that: the heat-conducting oil heat exchanger is characterized in that the inner container (2) is fixedly arranged in an inner cavity of the shell (1), a semicircular heat exchange tube (3) is welded on the outer wall of the inner container (2) in a spiral shape, one end of a heat-conducting oil inlet (4) is fixedly connected to the lower portion of the semicircular heat exchange tube (3), the other end of the heat-conducting oil inlet (4) penetrates through the shell (1) to be connected with a port of a heat utilization system, one end of a heat-conducting oil outlet (5) is fixedly connected to the upper portion of the semicircular heat exchange tube (3), and the other end of the heat-conducting oil outlet (5); the heating device is characterized in that a tank material opening (6) is formed in the upper portion of the inner container (2), the inner container (2) is filled with molten salt (7), an electric heating device (8) is further arranged inside the inner container (2), a heating pipe of the electric heating device (8) is buried in the molten salt (7) in an embedded mode, and the electrifying end of the electric heating device (8) penetrates through the upper surface of the inner container (2) and is connected with a heating cable.
2. The single tank high temperature energy storage device of claim 1, wherein: an insulating layer (9) is filled between the shell (1) and the inner container (2).
3. The single tank high temperature energy storage device of claim 1, wherein: and a heat conducting sheath is fixedly sleeved on the outer surface of a heating pipe of the electric heating device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423125.4A CN110940217A (en) | 2019-12-31 | 2019-12-31 | Single-tank high-temperature energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423125.4A CN110940217A (en) | 2019-12-31 | 2019-12-31 | Single-tank high-temperature energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110940217A true CN110940217A (en) | 2020-03-31 |
Family
ID=69913264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911423125.4A Pending CN110940217A (en) | 2019-12-31 | 2019-12-31 | Single-tank high-temperature energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110940217A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115381272A (en) * | 2022-08-05 | 2022-11-25 | 杭州慈源科技有限公司 | Solar heat storage automatic cooking device |
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| CN105115337A (en) * | 2015-09-22 | 2015-12-02 | 苏州工业园区瀚科机器制造有限公司 | Small heat accumulator |
| CN204963632U (en) * | 2015-08-31 | 2016-01-13 | 天津滨海储能技术有限公司 | High temperature energy storage fused salt jar that contains heat transfer, heating system |
| CN105509019A (en) * | 2016-01-21 | 2016-04-20 | 东南大学 | Ceramic-matrix high-temperature fused-salt phase-change heat-storage type off-peak electricity utilizing and steam generating device |
| CN207472113U (en) * | 2017-09-05 | 2018-06-08 | 黄善清 | A kind of built-in single tank fused salt regenerative apparatus heated and exchange heat |
| CN109253545A (en) * | 2018-08-08 | 2019-01-22 | 吴迪 | Phase-change energy storage type electromagnetic boiler |
| CN109654928A (en) * | 2019-01-28 | 2019-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of fused salt heat accumulation and heat-conducting oil system and heat-conducting method |
| CN211451998U (en) * | 2019-12-31 | 2020-09-08 | 贺迈新能源科技（上海）有限公司 | Single-tank high-temperature energy storage device |
-
2019
- 2019-12-31 CN CN201911423125.4A patent/CN110940217A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712501A (en) * | 2014-01-02 | 2014-04-09 | 上海电气集团股份有限公司 | Single-pot fused salt thermal storage device in distributed type micro-grid |
| CN204513768U (en) * | 2015-03-18 | 2015-07-29 | 山东岱荣节能环保科技有限公司 | Paddy electricity comprehensive utilization device |
| CN204963632U (en) * | 2015-08-31 | 2016-01-13 | 天津滨海储能技术有限公司 | High temperature energy storage fused salt jar that contains heat transfer, heating system |
| CN105115337A (en) * | 2015-09-22 | 2015-12-02 | 苏州工业园区瀚科机器制造有限公司 | Small heat accumulator |
| CN105509019A (en) * | 2016-01-21 | 2016-04-20 | 东南大学 | Ceramic-matrix high-temperature fused-salt phase-change heat-storage type off-peak electricity utilizing and steam generating device |
| CN207472113U (en) * | 2017-09-05 | 2018-06-08 | 黄善清 | A kind of built-in single tank fused salt regenerative apparatus heated and exchange heat |
| CN109253545A (en) * | 2018-08-08 | 2019-01-22 | 吴迪 | Phase-change energy storage type electromagnetic boiler |
| CN109654928A (en) * | 2019-01-28 | 2019-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of fused salt heat accumulation and heat-conducting oil system and heat-conducting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115381272A (en) * | 2022-08-05 | 2022-11-25 | 杭州慈源科技有限公司 | Solar heat storage automatic cooking device |
| CN115381272B (en) * | 2022-08-05 | 2024-01-30 | 杭州慈源科技有限公司 | Solar heat-storage automatic cooking device |
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