CN102032824A - High-temperature molten salt single-tank thermal energy storage device with movable separation plate and use method thereof - Google Patents
High-temperature molten salt single-tank thermal energy storage device with movable separation plate and use method thereof Download PDFInfo
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- CN102032824A CN102032824A CN2010105749545A CN201010574954A CN102032824A CN 102032824 A CN102032824 A CN 102032824A CN 2010105749545 A CN2010105749545 A CN 2010105749545A CN 201010574954 A CN201010574954 A CN 201010574954A CN 102032824 A CN102032824 A CN 102032824A
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- 238000000926 separation method Methods 0.000 title abstract 5
- 230000004927 fusion Effects 0.000 claims description 131
- 230000001172 regenerating effect Effects 0.000 claims description 42
- 230000008676 import Effects 0.000 claims description 28
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- 239000000463 material Substances 0.000 claims description 12
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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
- 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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- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a high-temperature molten salt single-tank thermal energy storage device with a movable separation plate and a use method thereof. The thermal energy storage device comprises a tank body, an upper tank cap, a lower tank cap, the separation plate and upright columns, wherein the upper and lower tank caps are respectively arranged at the upper and lower ends of the tank body; a high temperature molten salt inlet/outlet is arranged at the top of the upper tank cap; a low temperature molten salt inlet/outlet is arranged at the bottom of the lower tank cap; an upper end cap and a lower end cap are respectively arranged on the upper and lower parts of the tank body; a high temperature molten salt tank body inlet/outlet is arranged on the upper end cap; a low temperature molten salt tank body inlet/outlet is arranged on the lower end cap; the separation plate which moves up and down in the tank body is arranged in the middle of the tank body; a plurality of upright columns penetrate through the separation plate; and the upper and lower ends of each upright column are respectively fixed on the upper and lower end caps. The use method comprises: use in the thermal energy storage stage and use in the thermal energy discharge stage, wherein the flow directions of the molten salt in the thermal energy storage device are opposite in the thermal energy storage stage and the thermal energy discharge stage. The single-tank thermal energy storage device has the advantages of high effective thermal energy storage capacity per unit volume and simple and compact structure, and is convenient to use and maintain.
Description
Technical field
The present invention relates to solar energy thermal-power-generating heat storage technology field, single jar of regenerative apparatus of the removable demarcation strip of particularly a kind of high-temperature fusion salt and using method thereof.
Background technology
Serious day by day along with environmental problems such as energy crisis, greenhouse effects, the development and use new and renewable sources of energy has become global common issue.Solar energy thermal-power-generating becomes the huge renewable energy technologies of development potentiality gradually owing to have advantages such as environmentally safe, emission greenhouse gas, the energy is not renewable.
Solar energy thermal-power-generating gets up to produce high temperature fluid by the minute surface reflection with solar energy collecting, and high temperature fluid is delivered to the steam generator that is positioned at ground by pipeline, produces high pressure superheated steam, promotes traditional gas-turbine generating.General solar heat power generation system comprises sun reflection system, high temperature heat absorption heat transfer system and traditional steam generating system.The form at solar energy thermal-power-generating station mainly contains solar energy tower type electricity generation system, solar groove type electricity generation system and solar energy dish formula electricity generation system.
Because round the clock, the elegant or rainy meteorological reason of cloud layer all can influence the transmission of solar energy, the energy on the solar radiation face of land has intermittence and unstability, the solar radiation of assembling through concentrating device has discontinuous, astable characteristics.Therefore simple solar heat power generation system exists solar electrical energy generation cycle and need for electricity cycle not to match, the problems such as acute variation of system's thermal stress that the unexpected variation of solar radiation energy-flux density causes.In order to improve the stability and the continuity of generating efficiency, minimizing cost of electricity-generating, raising solar heat electric system, then needing increases regenerative apparatus to solar heat power generation system, so that system can continue to satisfy the generating needs when not having solar radiation energy, thereby realize the requirement of the continuous energy supply of large-scale industrialization.Developing low-cost heat transfer heat storage medium, development high-efficiency thermal storage technology (thermal energy storage, TES), strengthen heat energy device energy conversion efficiency and storage density, become one of key technology of solar energy high temperature heat generating with conversion, storage and the transport issues that solves solar energy effectively.Hold over system has become the key factor of weighing heat generating system cost and efficient.
Two jars of heat accumulation methods of fuse salt have become the main pattern of heat storage technology in the solar heat power generation system at present, and two jars of hold over systems are meant that solar heat power generation system comprises two heat-accumulator tanks, and one is high-temperature fusion salt heat-accumulator tank, and one is watery fusion salt heat-accumulator tank.Place separately respectively for cold jar and hot jar in the two jars of hold over systems, technical risk is low, to cause unit price and maintenance cost to compare higher but make factors such as two heat-accumulator tanks, high temperature are kept, the temperature difference of high cryogenic tank is less, and the space that reduces its power cost is very limited.The more mode of another research adopts single jar of accumulation of heat of mesolimnion exactly, single jar of hold over system is meant that watery fusion salt and high-temperature fusion salt as heat storage medium all are stored in one single jar, in accumulation of heat or exothermic process, cold fluid and hot fluid can be in contact with one another, form a temperature mesolimnion at contact area, and after heat transfer process finished, the fuse salt temperature maintenance in single jar was identical.Single jar of accumulation of heat of fuse salt mesolimnion is that the benefit of hot system is that investment cost has saved about 35% than two jars of hold over systems, but the transmission of heat by contact owing to cold and hot fuse salt of this system causes the effective regenerative capacity of unit volume to decrease, simultaneously because the heat conduction and the convection action of cold and hot fuse salt realize that really thermal stratification has certain difficulty.Each forms two flow processs by independently diffuser and liquid trap for single jar of upper and lower side of holding temperature layering, respectively for heat release and the use of accumulation of heat duty.The a plurality of radially-arranged pipe diffusers of the normal employing of diffuser, liquid trap adopts the collector tube with a plurality of interfaces, structure more complicated.In order to shorten thermoclinic distance, prevent that cold and hot fuse salt convection current from mixing, increase amount of stored heat, generally can fill materials such as quartzite or quartz sand in jar increases thermoclinic effect.Require filler to have good high-temperature physics and chemical stability, in order to avoid form the chip blocking channel.As seen single jar of hold over system of fuse salt design more complicated holds that exothermic process control difficulty is higher, generating efficiency is lower.
For the cost of electricity-generating that reduces solar energy thermal-power-generating, improve generating efficiency and year utilization rate, improve the stability and the continuity of solar heat electric system, this just needs, and the effective regenerative capacity of a kind of unit is bigger, steady in a long-term, manufacturing cost and lower heat accumulation method and the device of operation expense.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt that can effectively improve the effective regenerative capacity of unit volume is provided.
Another object of the present invention is to provide the using method of single jar of regenerative apparatus of a kind of removable demarcation strip of above-mentioned high-temperature fusion salt.
Technical scheme of the present invention is: single jar of regenerative apparatus of the removable demarcation strip of a kind of high-temperature fusion salt, comprise tank body, last cover, following cover, demarcation strip and right cylinder, last cover and following cover are located at the two ends up and down of tank body respectively, last cover top is provided with high-temperature fusion salt and imports and exports, following cover bottom is provided with watery fusion salt and imports and exports, tank body top is provided with upper end cover, having high-temperature fusion salt tank body on the upper end cover imports and exports, the tank body bottom is provided with bottom end cover, having watery fusion salt tank body on the bottom end cover imports and exports, the tank body middle part is provided with up and down demarcation strip in tank body, the right cylinder that a plurality of maintenance demarcation strip balances are used passes demarcation strip, and the two ends up and down of each right cylinder are individually fixed on upper end cover and the bottom end cover; In the tank body, the space between demarcation strip and the upper end cover is high-temperature fusion salt district, and the space between demarcation strip and the bottom end cover is watery fusion salt district; Import and export of high-temperature fusion salt and watery fusion salt are circumscribed with heat exchanger and solar thermal collector respectively between importing and exporting, and heat exchanger and solar thermal collector are arranged in parallel.Wherein, a plurality of right cylinders have played the effect that makes demarcation strip keep balance, demarcation strip makes high low temperature fuse salt remain on two different zones up and down along with the carrying out of holding exothermic process can move up and down in tank body, the heat transfer loss who has avoided high low temperature contact back to form.
Described upper end cover is located at the junction of cover and tank body, and upper end cover is by being fixedly welded on the tank body; Described bottom end cover is located at down the junction of cover and tank body, and bottom end cover is by being fixedly welded on the tank body.
The described cover of going up is connected by flange with tank body, and following cover is connected by flange with tank body.
The material of described demarcation strip and/or right cylinder is a refractory ceramics, and refractory ceramics has low thermal conductivity, can play effect heat insulation and the minimizing heat loss.
The material of described upper end cover and/or bottom end cover is a stainless steel, and the material of described tank body is a stainless steel.
Described right cylinder has 3, is uniformly distributed in the tank body in a circumferential direction.
The described vertical cross-section that goes up cover and/or following cover is a half elliptic, and the watery fusion salt import and export of the high-temperature fusion salt import and export at last cover top and following cover bottom is respectively equipped with safety valve.
Fuse salt was in the electrical heating wire that liquid state, heating tank body and balance heat loss are used when described tank body periphery was wound with and guarantees that regenerative apparatus starts, the glass fibre thermal insulation layer that the tank body most peripheral is enclosed with and prevents to conduct, convection current and radiation cause heat loss to use.
In single jar of regenerative apparatus of the removable demarcation strip of this high-temperature fusion salt, tank diameter and height equidimension depend on regenerator temperature and the regenerative capacity in the solar energy thermal-power-generating process, and the size of other each parts designs according to the tank body size.This regenerative apparatus adopts fuse salt as the heat transfer medium in accumulation of heat and the exothermic process, and its operating temperature range is 200～1000 ℃.
The operation principle of this regenerative apparatus is: because the continuity of solar energy thermal-power-generating, the fuse salt that accumulation of heat and heat transfer medium are served as in requirement can provide heat to finish cyclic process continuously, then must make high low temperature fuse salt all be kept in the jar, this regenerative apparatus utilizes demarcation strip that high-temperature fusion salt and watery fusion salt are carried out the mechanicalness isolation, high cryogen is remained in heat-accumulating process and exothermic process in two spaces of demarcation strip, thereby effectively avoided owing to high cryogen directly contacts the thermal loss that mesolimnion caused that forms.
The using method of single jar of regenerative apparatus of the removable demarcation strip of above-mentioned high-temperature fusion salt comprises the use of stage regenerator and the use of exothermic phase, and the fuse salt flow direction in stage regenerator and the exothermic phase regenerative apparatus is opposite, is specially:
(1) stage regenerator: when stage regenerator began, demarcation strip was in tank body top near the upper end cover place, and the space between demarcation strip and the bottom end cover is full of watery fusion salt; After stage regenerator begins, watery fusion salt is imported and exported from the watery fusion salt tank body on the bottom end cover and is flowed out watery fusion salt district, import and export by the watery fusion salt on the following cover again and flow to solar thermal collector, heat absorption heats up behind solar thermal collector, form high-temperature fusion salt, high-temperature fusion salt is imported and exported by the high-temperature fusion salt on the last cover and is flowed into, and is imported and exported by the high-temperature fusion salt tank body on the upper end cover and flows into high-temperature fusion salt district, and this process demarcation strip moves downward gradually along right cylinder; After stage regenerator finished, demarcation strip was in the tank body bottom near the bottom end cover place, and the space between demarcation strip and the bottom end cover is full of high-temperature fusion salt, no watery fusion salt in the tank body;
(2) exothermic phase: when exothermic phase began, demarcation strip was in the tank body bottom near the bottom end cover place, and the space between demarcation strip and the bottom end cover is full of high-temperature fusion salt; After exothermic phase begins, high-temperature fusion salt is imported and exported from the high-temperature fusion salt tank body on the upper end cover and is flowed out high-temperature fusion salt district, import and export by the high-temperature fusion salt on the last cover again and flow to heat exchanger, through forming watery fusion salt after the heat exchanger release heat, watery fusion salt is imported and exported by the watery fusion salt on the following cover and is flowed into, imported and exported by the watery fusion salt tank body on the bottom end cover and flow into watery fusion salt district, this process demarcation strip moves upward gradually along right cylinder; After exothermic phase finished, demarcation strip was in tank body top near the upper end cover place, and the space between demarcation strip and the bottom end cover is full of watery fusion salt, no high-temperature fusion salt in the tank body.
The present invention has following beneficial effect with respect to prior art:
(1) effective amount of stored heat of unit volume is big.Because cold fluid and hot fluid does not have direct contact in the regenerative apparatus, in tank body, do not have the Yin Wendu mesolimnion and the loss that causes, bigger raising heat storage capacity.
(2) single jar of simple in structure, compact, operation and maintenance convenience of regenerative apparatus.Tank body adopts mechanical ceramic demarcation strip to make cold and hot fuse salt remain on the upper and lower side of plate, compare with single jar of hold over system of original mesolimnion, reduced structures such as keeping thermoclinic diffuser, liquid trap and packing material, simplified the structure of tank body greatly, also very convenient to the maintenance of tank body; Adopted ceramic cylinder and ceramic wafer material to make the Corrosion Protection of system be improved simultaneously.
(3) import and export fuse salt operating temperature is constant.Solar energy thermal-power-generating requires the temperature of high-temperature fusion salt constant as far as possible, can change differently in mesolimnion with single jar of hold over system fuse salt of original mesolimnion temperature, single jar of regenerative apparatus of removable demarcation strip can make the temperature of the warm fuse salt of height keep constant.
(4) low cost of manufacture, applied range.Single jar of hold over system of removable demarcation strip compares with two jars of hold over systems, single jar of hold over system of mesolimnion, and manufacturing cost obviously reduces, the also corresponding minimizing of maintenance cost; System is not only applicable to solar energy thermal-power-generating high-temperature heat accumulation device, is applicable to the middle low temperature accumulation of energy occasion that needs heat storage medium to finish circulation yet, has wider range of application.
(5) amount of stored heat can be regulated.Because high low temperature fuse salt is separated by ceramic wafer in the regenerative apparatus, so the thermal discharge of fuse salt can regulate according to actual needs, compares single jar of hold over system of mesolimnion, and it can avoid the mutual heat transfer loss between the high low temperature fuse salt preferably.
Description of drawings
Fig. 1 is the structural representation of single jar of regenerative apparatus of the removable demarcation strip of this high-temperature fusion salt.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Single jar of regenerative apparatus of the present embodiment removable demarcation strip of a kind of high-temperature fusion salt, its structure as shown in Figure 1, comprise tank body 1, last cover 2, following cover 11, demarcation strip 7 and right cylinder 6, last cover 2 and following cover 11 are located at the two ends up and down of tank body 1 respectively, last cover 2 tops are provided with high-temperature fusion salt and import and export 3, following cover 11 bottoms are provided with watery fusion salt and import and export 10, tank body 1 top is provided with upper end cover 4, have high-temperature fusion salt tank body on the upper end cover 4 and import and export 5, tank body 1 bottom is provided with bottom end cover 8, have watery fusion salt tank body on the bottom end cover 8 and import and export 9, tank body 1 middle part is provided with up and down demarcation strip 7 in tank body, the right cylinder 6 that a plurality of maintenance demarcation strip 7 balances are used passes demarcation strip 7, and the two ends up and down of each right cylinder 6 are individually fixed on upper end cover 4 and the bottom end cover 8; In the tank body 1, the space between demarcation strip 7 and the upper end cover 4 is high-temperature fusion salt district, and the space between demarcation strip 7 and the bottom end cover 8 is watery fusion salt district; Import and export of high-temperature fusion salt and watery fusion salt are circumscribed with heat exchanger and solar thermal collector respectively between importing and exporting, and heat exchanger and solar thermal collector are arranged in parallel.Wherein, a plurality of right cylinders 6 have played the effect that makes demarcation strip 7 keep balance, demarcation strip 7 makes high low temperature fuse salt remain on two different zones up and down along with the carrying out of holding exothermic process can move up and down in tank body 1, the heat transfer loss who has avoided high low temperature contact back to form.
The material of demarcation strip 7 and/or right cylinder 6 is a refractory ceramics, and refractory ceramics has low thermal conductivity, can play effect heat insulation and the minimizing heat loss.
The material of upper end cover 4 and/or bottom end cover 8 is a stainless steel, and the material of tank body 1 is a stainless steel.
Fuse salt was in the electrical heating wire that liquid state, heating tank body and balance heat loss are used when tank body 1 periphery was wound with and guarantees that regenerative apparatus starts, the glass fibre thermal insulation layer that tank body 1 most peripheral is enclosed with and prevents to conduct, convection current and radiation cause heat loss to use.
In single jar of regenerative apparatus of the removable demarcation strip of this high-temperature fusion salt, the diameter of tank body 1 and height equidimension depend on regenerator temperature and the regenerative capacity in the solar energy thermal-power-generating process, and the size of other each parts designs according to the size of tank body 1.This regenerative apparatus adopts fuse salt as the heat transfer medium in accumulation of heat and the exothermic process, and its operating temperature range is 200～1000 ℃.
The operation principle of this regenerative apparatus is: because the continuity of solar energy thermal-power-generating, the fuse salt that accumulation of heat and heat transfer medium are served as in requirement can provide heat to finish cyclic process continuously, then must make high low temperature fuse salt all be kept in the jar, this regenerative apparatus utilizes 7 pairs of high-temperature fusion salt of demarcation strip and watery fusion salt to carry out the mechanicalness isolation, high cryogen is remained in heat-accumulating process and exothermic process in two spaces of demarcation strip, thereby effectively avoided owing to high cryogen directly contacts the thermal loss that mesolimnion caused that forms.
The using method of single jar of regenerative apparatus of the removable demarcation strip of above-mentioned high-temperature fusion salt comprises the use of stage regenerator and the use of exothermic phase, and the fuse salt flow direction in stage regenerator and the exothermic phase regenerative apparatus is opposite, is specially:
(1) stage regenerator: when stage regenerator began, demarcation strip 7 was in tank body 1 top near upper end cover 4 places, and the space between demarcation strip 7 and the bottom end cover 8 is full of watery fusion salt; After stage regenerator begins, watery fusion salt is imported and exported 9 from the watery fusion salt tank body on the bottom end cover 8 and is flowed out watery fusion salt district, import and export 10 by the watery fusion salt on the following cover 11 again and flow to solar thermal collector, heat absorption heats up behind solar thermal collector, form high-temperature fusion salt, high-temperature fusion salt is imported and exported 3 by the high-temperature fusion salt on the last cover 2 and is flowed into, import and export 5 by the high-temperature fusion salt tank body on the upper end cover 4 again and flow into high-temperature fusion salt district, this process demarcation strip 7 moves downward gradually along right cylinder 6; After stage regenerator finished, demarcation strip 7 was in the tank body bottom near bottom end cover 8 places, and the space between demarcation strip 7 and the bottom end cover 8 is full of high-temperature fusion salt, no watery fusion salt in the tank body 1;
(2) exothermic phase: when exothermic phase began, demarcation strip 7 was in tank body 1 bottom near bottom end cover 8 places, and the space between demarcation strip 7 and the bottom end cover 8 is full of high-temperature fusion salt; After exothermic phase begins, high-temperature fusion salt is imported and exported 5 from the high-temperature fusion salt tank body on the upper end cover 4 and is flowed out high-temperature fusion salt district, import and export 3 by the high-temperature fusion salt on the last cover 2 again and flow to heat exchanger, through forming watery fusion salt after the heat exchanger release heat, watery fusion salt is imported and exported 10 by the watery fusion salt on the following cover 8 and is flowed into, import and export 9 by the watery fusion salt tank body on the bottom end cover 8 again and flow into watery fusion salt district, this process demarcation strip 7 moves upward gradually along right cylinder 6; After exothermic phase finished, demarcation strip 7 was in tank body 1 top near upper end cover 4 places, and the space between demarcation strip 7 and the bottom end cover 8 is full of watery fusion salt, no high-temperature fusion salt in the tank body 1.
As mentioned above, just can realize the present invention preferably, the foregoing description is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.
Claims (9)
1. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt, it is characterized in that, comprise tank body, last cover, following cover, demarcation strip and right cylinder, last cover and following cover are located at the two ends up and down of tank body respectively, last cover top is provided with high-temperature fusion salt and imports and exports, following cover bottom is provided with watery fusion salt and imports and exports, tank body top is provided with upper end cover, having high-temperature fusion salt tank body on the upper end cover imports and exports, the tank body bottom is provided with bottom end cover, having watery fusion salt tank body on the bottom end cover imports and exports, the tank body middle part is provided with up and down demarcation strip in tank body, the right cylinder that a plurality of maintenance demarcation strip balances are used passes demarcation strip, and the two ends up and down of each right cylinder are individually fixed on upper end cover and the bottom end cover; In the tank body, the space between demarcation strip and the upper end cover is high-temperature fusion salt district, and the space between demarcation strip and the bottom end cover is watery fusion salt district; Import and export of high-temperature fusion salt and watery fusion salt are circumscribed with heat exchanger and solar thermal collector respectively between importing and exporting, and heat exchanger and solar thermal collector are arranged in parallel.
2. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1 is characterized in that described upper end cover is located at the junction of cover and tank body, and upper end cover is by being fixedly welded on the tank body; Described bottom end cover is located at down the junction of cover and tank body, and bottom end cover is by being fixedly welded on the tank body.
3. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1 is characterized in that, the described cover of going up is connected by flange with tank body, and following cover is connected by flange with tank body.
4. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1 is characterized in that the material of described demarcation strip and/or right cylinder is a refractory ceramics.
5. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1 is characterized in that the material of described upper end cover and/or bottom end cover is a stainless steel, and the material of described tank body is a stainless steel.
6. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1 is characterized in that described right cylinder has 3, is uniformly distributed in the tank body in a circumferential direction.
7. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1, it is characterized in that, the described vertical cross-section that goes up cover and/or following cover is a half elliptic, and the watery fusion salt import and export of the high-temperature fusion salt import and export at last cover top and following cover bottom is respectively equipped with safety valve.
8. single jar of regenerative apparatus of the removable demarcation strip of high-temperature fusion salt according to claim 1, it is characterized in that, fuse salt was in the electrical heating wire that liquid state, heating tank body and balance heat loss are used when described tank body periphery was wound with and guarantees that regenerative apparatus starts, the glass fibre thermal insulation layer that the tank body most peripheral is enclosed with and prevents to conduct, convection current and radiation cause heat loss to use.
9. according to the using method of single jar of regenerative apparatus of each removable demarcation strip of described high-temperature fusion salt of claim 1～8, it is characterized in that, comprise the use of stage regenerator and the use of exothermic phase, the fuse salt flow direction in stage regenerator and the exothermic phase regenerative apparatus is opposite, is specially:
(1) stage regenerator: when stage regenerator began, demarcation strip was in tank body top near the upper end cover place, and the space between demarcation strip and the bottom end cover is full of watery fusion salt; After stage regenerator begins, watery fusion salt is imported and exported from the watery fusion salt tank body on the bottom end cover and is flowed out watery fusion salt district, import and export by the watery fusion salt on the following cover again and flow to solar thermal collector, heat absorption heats up behind solar thermal collector, form high-temperature fusion salt, high-temperature fusion salt is imported and exported by the high-temperature fusion salt on the last cover and is flowed into, and is imported and exported by the high-temperature fusion salt tank body on the upper end cover and flows into high-temperature fusion salt district, and this process demarcation strip moves downward gradually along right cylinder; After stage regenerator finished, demarcation strip was in the tank body bottom near the bottom end cover place, and the space between demarcation strip and the bottom end cover is full of high-temperature fusion salt, no watery fusion salt in the tank body;
(2) exothermic phase: when exothermic phase began, demarcation strip was in the tank body bottom near the bottom end cover place, and the space between demarcation strip and the bottom end cover is full of high-temperature fusion salt; After exothermic phase begins, high-temperature fusion salt is imported and exported from the high-temperature fusion salt tank body on the upper end cover and is flowed out high-temperature fusion salt district, import and export by the high-temperature fusion salt on the last cover again and flow to heat exchanger, through forming watery fusion salt after the heat exchanger release heat, watery fusion salt is imported and exported by the watery fusion salt on the following cover and is flowed into, imported and exported by the watery fusion salt tank body on the bottom end cover and flow into watery fusion salt district, this process demarcation strip moves upward gradually along right cylinder; After exothermic phase finished, demarcation strip was in tank body top near the upper end cover place, and the space between demarcation strip and the bottom end cover is full of watery fusion salt, no high-temperature fusion salt in the tank body.
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Application publication date: 20110427 |