CN203148063U - Dual heat transfer structure applied to solar heat utilization system - Google Patents
Dual heat transfer structure applied to solar heat utilization system Download PDFInfo
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- CN203148063U CN203148063U CN2012207267382U CN201220726738U CN203148063U CN 203148063 U CN203148063 U CN 203148063U CN 2012207267382 U CN2012207267382 U CN 2012207267382U CN 201220726738 U CN201220726738 U CN 201220726738U CN 203148063 U CN203148063 U CN 203148063U
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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
- Y02E10/44—Heat exchange systems
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Abstract
The utility model provides a dual heat transfer structure applied to a solar heat utilization system. The dual heat transfer structure is characterized by comprising a main pipeline, a primary heat transfer medium, auxiliary pipes and secondary heat transfer media, wherein the auxiliary pipes are placed inside the main pipeline; the secondary heat transfer media flow inside the auxiliary pipes; and the primary heat transfer medium flows in the space formed by the outer walls of the auxiliary pipes and the inner wall of the main pipeline. According to the utility model, with the adoption of the special dual heat transfer structure of the solar heat utilization system, the primary heat transfer medium is heated and flows by utilizing heat stored by the system; and the secondary heat transfer media absorb heat of the primary heat transfer medium when operation of the solar heat utilization system stops or tracking on sunlight is stopped, so that normal operation of the system is ensured, the use of solar heat is maximized, an electric heating device for molten salt is omitted, electricity cost is saved, and operational risks and cost of the system are reduced.
Description
Technical field
The utility model relates to a kind of two heat transfer structures that are applied to the Solar Energy Heat Utilization System of field of solar energy.
Background technology
Solar energy is more satisfactory non-fossil energy, and is pollution-free, the clean energy resource of ecological environment harmony, and inexhaustible usefulness it is without cease; Present solar energy utilization technique, particularly the solar energy thermal-power-generating technology is subjected to everybody attention day by day, becomes to solve the important means of energy problem in the future.
The inlet condition of steam turbine has very big influence to the generating efficiency of steam turbine in the solar heat power generation system, when the generating of high temperature and high pressure steam pushing turbine can obtain higher relatively generating efficiency, thereby improve the utilization rate of heat energy, can reduce the construction cost of solar plant; The acquisition of higher inlet condition needs the higher hot grade of heat-storage medium; The acquisition of the hot grade of higher heat-storage medium needs the outlet temperature parameter of higher heat collector; Conduction oil but is subject to the material settling out performance of conduction oil itself as the heat transfer medium industrialization of solar plant for many years, can only be operated under 400 ℃ of temperature and work, and so can't obtain to surpass 400 ℃ steam turbine intake air temperature parameter; Nitrate heat transfer medium system can well address this problem at present, and the nitrate heat transfer medium can be operated in 550 ℃, does not decompose under 600 ℃; So can well solve the problem of steam turbine inlet temperature and pressure parameter, improve the generating efficiency of steam turbine, utilize solar energy more efficiently; No matter but be conduction oil heat transfer medium system or for nitrate heat transfer medium system, all need to face a common problem, be that heat transfer medium is after Jing Chang withdraws from ray trace, all can solidify at low temperatures, heat transfer medium is at work in case solidify and cause the partial plugs pipe, will be catastrophic to the security of system; Traditional way is at night the fused salt in the pipeline to be kept the low speed circulation,, guarantees can not solidify to its heat tracing with thermal source, because general fused salt freezing point is higher, so the heat loss that the insulation circulation causes is very big; Perhaps in heat collector or the outside auxiliary electrical heating system that increases of transmission pipeline, and directly electrical heating causes excess temperature easily, all be unknown number concerning the security of system, and the extra electric use amount of the power plant that increases, the maintenance of power plant also is a huge cost undoubtedly.Moreover heat storage can is when out of service, and for example during continuous rainy weather or the power station planned maintenance, the cold jar of heat reservoir or heat jar or the pipeline that links also might freeze; In a single day heat storage can freezes, and electricity generation system is in the paralysis fully, and system will suffer tremendous loss.
The existing companion's thermic devices of heat collector or heat storage can mostly is the power supply heating, and heating power selects can not cause at that time excess temperature to decompose, and causes the performance of heat transfer medium to change.Consider all have steam generating system in the CSP electricity generation system, and have heat reservoir, by the heat-storage medium heat exchange, and do not need electricity consumption just can obtain steam substantially, oil-steam heat-exchanger rig for example, salt-steam heat-exchanger rig; Donkey boiler in the power station also can produce saturated vapor or the superheated steam under the specified pressure, and saturation temperature point (phase transition temperature) can conveniently be controlled, economy is convenient and do not have excess temperature decomposition risk, avoids the coagulating salt overtemperature to melt performance variation and the security hidden trouble that causes.
Summary of the invention
The purpose of this utility model is, a kind of two heat transfer structures that are applied to Solar Energy Heat Utilization System are provided, can solve the heat transfer medium low temperature frozen plug problem in the solar thermal utilization process simply and effectively, and maximum using solar heat, avoid the potential safety hazard of external heat operation mode, reduce the station-service electric weight and reduce operation maintenance cost.
The utility model provides a kind of two heat transfer structures that are applied to Solar Energy Heat Utilization System, it is characterized in that, described pair of heat transfer structure comprises trunk line, main heat transfer medium, auxiliary tube and time heat transfer medium; Described auxiliary tube is arranged in trunk line inside, and inferior heat transfer medium is in the auxiliary tube internal flow, and main heat transfer medium flows in the space of auxiliary tube outer wall and the formation of trunk line inwall.
Further, described auxiliary tube is arranged in the collecting system and transport pipeline system of Solar Energy Heat Utilization System; Collecting system mainly comprises absorption tube, and this endothermic tube can equivalent be interpreted as the trunk line in two heat transfer structures; The transport pipeline system mainly comprises main pipe, and this main pipe can equivalent be interpreted as the trunk line in two heat transfer structures; Be interpreted as that perhaps collecting system and transport pipeline system are the different embodiments (following full text can be done this similar understanding) of two heat transfer structures.
Further, described auxiliary tube is arranged in the inside, whole heat transfer tubes road of normal heat absorption heat transfer cycle in the Solar Energy Heat Utilization System, and described whole heat transfer tubes road comprises all circulation ducts of main heat transfer medium and all circulation duct inside of heat-storage medium.
Further, described auxiliary tube is arranged in the heat reservoir or heat-exchanger rig or expansion telescopic joint or low-pressure heater or oxygen-eliminating device of Solar Energy Heat Utilization System; Under the continuous normal operation of system, after main heat transfer medium solidifies, flow through inferior heat transfer medium water for example in the auxiliary tube, utilize the heat in heat reservoir or the heat-exchanger rig, become behind saturated vapor or the superheated steam by auxiliary tube to main heat transfer medium heat release, solidify attitude master heat transfer medium in order to what melt collecting system or transport pipeline; Under the abnormal running situation, after for example system is between the down-time period, after main heat transfer medium in heat reservoir or the heat-exchanger rig or heat-storage medium solidify, can produce saturated vapor or superheated steam by absorbing the external heat source heat, by auxiliary tube circulation and conduct heat to heat reservoir or heat-exchanger rig and collecting system or transport pipeline, to melt heat-storage medium or the main heat transfer medium that has solidified.
Further, described auxiliary tube is arranged in the position of the pump housing or valve body; Perhaps be communicated in the pump housing or valve body heater; In order to control the temperature of all pump housings in the heat utilization system or valve, make the main heat transfer medium of valve or pump inside be in molten state when needed or solidify cooling when needed and emit heat.
Further, main heat transfer medium is simple substance salt or salt-mixture or conduction oil or low-melting-point metal, for example nitrate, mixed nitrate, conduction oil, low-melting-point metal etc. in the described pair of heat transfer structure.
Further, the heat-storage medium of described main heat transfer medium and heat reservoir internal placement is same substance, and main heat transfer medium directly enters the heat reservoir storing heat after absorbing heat.
Further, described heat utilization system is before the beginning sunray is followed the trail of, and inferior heat transfer medium high temperature attitude flows into auxiliary tube, and heat is discharged to main heat transfer medium; Main heat transfer medium melts after absorbing heat, but begins to circulate enforcement thawing start after becoming flow regime, and this moment, the Sun Island system can begin the ray tracing heat-obtaining.
Further, described heat utilization system is after finishing ray trace, inferior heat transfer medium cold state flows in the auxiliary tube, the heat that circulation is taken away in the main heat transfer medium utilizes to the heat accumulation system or directly, main heat transfer medium temperature is descended and solidify, effectively utilize and retain heat in the collecting system, reduce the thermal loss of passive natural heat dissipation at night.
Further, the inferior heat transfer medium in the described auxiliary tube is water, steam, gas etc.; Described gas can be air, carbon dioxide, nitrogen or inert gas etc.
Further, described a plurality of parallel auxiliary tube is arranged in the main pipe in the same transport pipeline system; Be main pipe (trunk lines of the two heat transfer structures of equivalence) inside in the described transport pipeline system have main heat transfer medium, a plurality of auxiliary tube that is arranged in juxtaposition, and auxiliary tube in inferior heat transfer medium.
Further, described at least one auxiliary tube is arranged in a plurality of main pipes inside in the transport pipeline system respectively; Be that described transport pipeline system comprises a plurality of main pipes arranged side by side, single main pipe inside has the inferior heat transfer medium in main heat transfer medium, one or more auxiliary tube that is arranged in juxtaposition and the auxiliary tube.
The two heat transfer structures that the are applied to Solar Energy Heat Utilization System described in the utility model heat transfer structure of traditional solar energy heat utilization system are more in the past compared, have following advantage: 1, the utility model is taked special two heat transfer structures, the heat that can use inferior heat transfer medium mobile in the auxiliary tube to bring when main heat transfer medium solidifies heats the main heat transfer medium that solidifies, make main heat transfer medium can melt the normal operation of mobile assurance system, can solve the stifled problem of freezing that traditional hot passes system at all; 2, can solidify the heat of release by main heat transfer medium in the abundant suction line of inferior heat transfer medium, maximally utilise solar heat, improve efficiency of utilization; 3, owing to cancelled the device of traditional electrical heating heat transfer medium, make the device outfit of whole system simple relatively, and the expense of having saved device and electric energy, improve the security of system performance, reduce the cost of whole operation.
Description of drawings
With reference to the accompanying drawings specific embodiments of the present utility model is described in detail, in the accompanying drawing:
Fig. 1 is the embodiment integral layout schematic diagram that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model;
Fig. 2-1 is a kind of arrangement structural representation that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model;
Fig. 2-2 is the second kind of arrangement structural representation that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model;
Fig. 2-3 is the third arrangement structural representation that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model;
Fig. 3 is the inferior heat transfer medium circulation route schematic diagram that is applied to the preceding preheat mode of two normal operations in heat transfer structure embodiment morning of Solar Energy Heat Utilization System of the present utility model;
Time heat transfer medium circulation route schematic diagram when Fig. 4 follows the trail of for the two heat transfer structure embodiment that are applied to Solar Energy Heat Utilization System of the present utility model stop sunshine at dusk;
Fig. 5 is two heat transfer structures and the circulating pump syndeton schematic diagram that is applied to Solar Energy Heat Utilization System of the present utility model.
The specific embodiment
Fig. 1 is the embodiment integral layout schematic diagram that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model.As shown in Figure 1, this pair heat transfer structure is arranged in the Solar Energy Heat Utilization System, and Solar Energy Heat Utilization System comprises condenser system 101, two heat transfer structure, heat reservoir and heat utilization system.Described condenser system 101 is slot type or Fresnel formula condenser system or tower condenser system or butterfly condenser system.Described pair of heat transfer structure comprises trunk line, main heat transfer medium, auxiliary tube and time heat transfer medium, described auxiliary tube is arranged in trunk line inside, inferior heat transfer medium is in the auxiliary tube internal flow, and main heat transfer medium flows in the space of auxiliary tube outer wall and the formation of trunk line inwall.Among Fig. 1 in two heat transfer structures solid line represent the closed circuit of main heat transfer medium, the closed circuit of dotted line representative time heat transfer medium; Described auxiliary tube is arranged in the collecting system and transport pipeline system of Solar Energy Heat Utilization System; Described collecting system is arranged in the focal position of condenser system; Described transport pipeline system connects collecting system, the two internal run-through, and the two the main heat transfer medium of flowing through is delivered to heat reservoir or heat utilization system with solar heat; Described heat utilization system for example is electricity generation system, the heat energy that Solar Energy Heat Utilization System utilizes sunshine to transform produces superheated steam, pushing turbine 106 generates electricity, the unnecessary heat of the Sun Island system acquisition is stored by heat reservoir, two heat transfer structures take out the heat in the heat reservoir when sunshine deficiency or night, guarantee the normal operation of electricity generation system.Described heat reservoir comprises heat accumulation heat jar 103 and the cold jar 105 of heat accumulation, the heat accumulation heat jar 103 interior high-temperature heat-storage media of arranging, cold jar 105 interior low temperature heat-storage medium of arranging of heat accumulation, described high-temperature heat-storage medium and low temperature heat-storage medium for example are the salt-mixture of sodium nitrate wt60%+ potassium nitrate wt40%; Described auxiliary tube is arranged in the inside, whole heat transfer tubes road of inhaling heat transfer cycle in the Solar Energy Heat Utilization System, and described whole heat transfer tubes road comprises all circulation ducts of main heat transfer medium and all circulation duct inside of heat-storage medium.Further, described auxiliary tube is arranged in the heat accumulation heat jars 103 of described heat reservoir and the heat-exchanger rig 104 in cold jar 105 of heat accumulation or the heat utilization system or in expansion telescopic joint or low-pressure heater or the oxygen-eliminating device simultaneously.Under normal operation, the inferior heat transfer medium in the auxiliary tube of flowing through utilizes the heat in heat reservoir or the heat-exchanger rig, obtains saturated vapor or superheated steam, in order to melt heat-storage medium or the main heat transfer medium that solidifies attitude in other position; Prevent main heat transfer medium or heat-storage medium blockage phenomenon in pipe interior or the pump housing or valve body; Under the abnormal running situation, after for example system is between the long-time down-time period, after main heat transfer medium in heat reservoir or the heat-exchanger rig or heat-storage medium solidify, can pass through external heat source for example saturated vapor or the superheated steam of gas fired-boiler generation, heat-storage medium or the main heat transfer medium that heat reservoir or heat-exchanger rig and other position solidify with thawing of flowing through in auxiliary tube makes system recover normal operating condition again.
Fig. 2-1 is a kind of arrangement structural representation that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model.As shown in the figure, two heat transfer structures comprise trunk line 210, main heat transfer medium 209, auxiliary tube 211 and time heat transfer medium 208.Described auxiliary tube 211 is arranged in the collecting system and transport pipeline system of Solar Energy Heat Utilization System; Collecting system mainly comprises absorption tube, and this endothermic tube can equivalent be interpreted as the trunk line 210 in two heat transfer structures; The transport pipeline system mainly comprises main pipe, and this main pipe can equivalent be interpreted as the trunk line 210 in two heat transfer structures; Be interpreted as that perhaps collecting system and transport pipeline system are the different embodiments (following full text can be done this similar understanding) of two heat transfer structures.Described main heat transfer medium 209 is simple substance salt or salt-mixture or conduction oil or low-melting-point metal; Described time heat transferring medium 208 is water, steam or gas, and described gas can be air, carbon dioxide, nitrogen or inert gas; Described auxiliary tube 211 is arranged in trunk line 210 inside, and inferior heat transfer medium can be in auxiliary tube 211 internal flows, and main heat transfer medium 209 for example salt-mixture is arranged in the space of auxiliary tube 211 outer walls and the formation of trunk line 210 inwalls.Described trunk line 210 can be arranged in light and converge the position, is converted into heat energy with converging to its surperficial sunshine, when main heat transfer medium 209 is flowed through trunk line 210 heat is taken away; Described main heat transfer medium 209 can absorb the heat of time heat transfer medium 208, and self melts the melt-flow state that is in; Perhaps main heat transfer medium 209 release heat are given time heat transfer medium after coagulation and are reduced temperature, reduce heat and discharge the waste that causes to the external world, improve solar thermal utilization efficient.
Fig. 2-2 is the second kind of arrangement structural representation that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model.Because of the main pipe size in the transport pipeline system of Solar Energy Heat Utilization System generally bigger; The auxiliary tube of described a plurality of arrays is arranged in the main pipe in the same transport pipeline system, namely main pipe (trunk lines 210 of the two heat transfer structures of the equivalence) inside in the described transport pipeline system have main heat transfer medium 209, a plurality of auxiliary tube 211～auxiliary tube 213 that is arranged in juxtaposition, and auxiliary tube in inferior heat transfer medium 208.Described a plurality of auxiliary tube 211～auxiliary tube 213 dispersed placement are in trunk line 210 inside, carry out heat exchange with the main heat transfer medium 209 of trunk line 210 internal placement; Described time heat transfer medium 208 is arranged in auxiliary tube 211～auxiliary tube 213 inside, absorbs heat that main heat transfer medium 209 discharges or heat is discharged to main heat transfer medium 209.
Fig. 2-3 is the third arrangement structural representation that is applied to two heat transfer structures of Solar Energy Heat Utilization System of the present utility model.Shown in Fig. 2-3, at least one auxiliary tube is arranged in a plurality of main pipes inside in the transport pipeline system respectively; Be that described transport pipeline system comprises a plurality of two heat transfer structures 214～two heat transfer structures unit 216 arranged side by side; Be example with two heat transfer structures 214, two heat transfer structures 214 comprise main pipe (being trunk line), and single main pipe inside has the inferior heat transfer medium (shown among the figure and arranged single auxiliary tube in the single main pipe) in main heat transfer medium, one or more auxiliary tube that is arranged in juxtaposition and the auxiliary tube; Require to finish absorption or the release of heat according to two heat transfer structures of Solar Energy Heat Utilization System; A plurality of pairs of heat transfer structures are arranged in the inside of stay pipe 230, implement unified insulation.
Fig. 3 is the inferior heat transfer medium circulation route schematic diagram that is applied to the preceding preheat mode of two normal operations in heat transfer structure embodiment morning of Solar Energy Heat Utilization System of the present utility model.When night temperature lower, main heat transfer medium is for solidifying attitude, collecting system 302 can't normally move the next morning like this.The heat that two heat transfer structures of Solar Energy Heat Utilization System rely on heat reservoir to provide heats main heat transfer medium.As shown in Figure 3, inferior heat transfer medium is when for example being water, and the pressure in the control auxiliary tube is 4MPA, (making saturated-steam temperature is 250 ℃, surpasses 30 ℃ of the fusion temperatures of main heat transfer medium); When inferior heat transfer medium was air or nitrogen, the control input temp was 500 ℃～550 ℃, surpassed the fusion temperature of main heat transfer medium and was lower than its decomposition temperature.During preheating, inferior heat transfer medium is pumped to heat-exchanger rig 304, carry out heat exchange when flowing through heat-exchanger rig 304, temperature raises after absorbing heat, inferior heat transfer medium after the intensification enters in collecting system and the transportation pipe-line system auxiliary tube is heated, the main heat transfer medium that heat transferred is solidified by auxiliary tube, after the main heat transfer medium that solidifies absorbs heat, temperature raises and then melts gradually, the inferior heat transfer medium temperature that flows out when auxiliary tube is higher than 230 ℃, and (main heat transfer medium is common nitric acid salt-mixture, about 220 ℃ of fusing point) and the duration surpass 30min, can be judged as that main heat transfer medium in the trunk line all melted can proper flow, finishes heating process, and preheat mode finishes, system enters normal operation on daytime generating state, and main heat transfer medium begins normal circulation.
Time heat transfer medium circulation route schematic diagram when Fig. 4 follows the trail of for the two heat transfer structure embodiment that are applied to Solar Energy Heat Utilization System of the present utility model stop sunshine at dusk.When two heat transfer structures of dusk Solar Energy Heat Utilization System stop sun-tracing light or sunshine and can't utilize, the inferior heat transfer medium of low temperature absorbs the heat that main heat transfer medium discharges, reduce main heat transfer medium because of the thermal loss that the low nature cooling of environment temperature at night causes, effectively retain heat in utilization or the stocking system.When inferior heat transfer medium was chosen as water, input pressure for example was 2MPA, and temperature for example is 35 ℃, and when inferior heat transfer medium was chosen as air or nitrogen, input temp for example was 10 ℃.As shown in Figure 4, be under this operational mode, close stop valve a and stop valve c, avoid under this operational mode, the aqueous medium of acquisition flows into heat accumulation heat jar 403, takes away heat accumulation heat jar 403 internal heat, reduces heat accumulation heat jar 403 interior reservoir heat medium temperature grades; The inferior heat transfer medium of low temperature is pumped to collecting system and pipeline transportation system, liquid main heat transfer medium wherein discharges heat to inferior heat transfer medium, main heat transfer medium through liquid temperature reduces, solidify, solid state temperature reduction three phases, inferior heat transfer medium heat absorption back temperature raises, if inferior heat transfer medium is water, become steam after the intensification, inferior heat transfer medium flows out from collecting system 402, enter heat accumulation through stop valve b when the inferior heat transfer medium outlet temperature behind the absorption heat is higher than 290 ℃ and carry out the storage of heat for cold jar 405, low temperature heat-storage medium temperature is raise; Can be understood as main heat transfer medium and all solidified and drop to lower temperature, can finish the heat-obtaining process. when being lower than 290 ℃ of backing systems that enter heat reservoir, temperature carries out low-temperature storage or utilization; When inferior heat transfer medium is gaseous material, nitrogen for example, auxiliary tube carries out heat temperature raising through low-pressure heater or high-pressure heater to feedwater.Be specially time heat transfer medium and enter low-pressure heater or high-pressure heater, medium heat exchange after solidifying with steam turbine, inferior heat transfer medium release heat, the water after the heating carries out further heat exchange evaporation through heat-exchanger rig or boiler, enters steam turbine after temperature raises and generates electricity.When the temperature of the liquid of inferior heat transfer medium output is lower than 100 ℃ (salt-mixture is main heat transfer medium) and the duration surpasses 30min.
Fig. 5 is two heat transfer structures and the circulating pump syndeton schematic diagram that is applied to Solar Energy Heat Utilization System of the present utility model; As shown in Figure 5, circulating pump comprises motor 532 and pump head 531; The two ends of pump head connect trunk line 510; Because can't run through by auxiliary tube in the pump head 531, can be by shown in the figure, during through pump head, auxiliary tube 511 pump housing of pressing close to circulate twines; The position that the heat heating pump head of utilization time heat transfer medium has main heat transfer medium to pass through prevents that circulating pump from stopping the phenomenon appearance that the main heat transfer medium in back condenses and stops up pump head for a long time.Identical or similar processing: the inferior heat transfer medium inside of flowing through includes confined space (pump housing or the valve body chuck of pump housing specific features or valve specific features, also can be described as the pump housing or valve body heater) in, utilize the heat of time heat transfer medium that the pump housings all in the whole heat utilization system or valve are in the normal operating temperature.
The 120000 square meter speculum solar energy mirror fields of setting up with the northwest China area are example, and be described: wherein the heat collector opening calculates with 6m, and the heat collector total length is approximately 20000m, and vacuum heat absorbing pipe is of a size of 70mm*2.5mm; Inner auxiliary tube is of a size of 25mm*2; Main heat transfer medium is sodium nitrate 60wt%+ potassium nitrate 40%wt, single-row length overall 200m, total columns 100; Trunk line length overall 750m, inner auxiliary tube 100 row, totally 2 row; The volume of total main heat transfer medium is 56.5m3 in the heat collecting pipeline, gross mass 108T; Total main heat transfer medium 725T in the trunk line; This design can be in the short time be taken out the heat of internal system, avoid the bigger loss of heat, above-mentioned thermal-collecting tube parametron wall surface temperature night insulation to 300 ℃ for example, and according to a kind of vacuum heat absorbing pipe experimental data of external production, heat loss is 100W/m; Vacuum heat absorbing pipe total length 20000m continues 18 hours, then one night the heat total losses be the 36MWh heat.The salt that heat utilization system will solidify in a short period of time melts safely, can efficient absorption and utilize this part heat, and recover the normal circulation running status rapidly before the The sun came up in the morning, economical convenient efficient, and safe.
Obviously, under the prerequisite that does not depart from true spirit of the present utility model and scope, the utility model described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The utility model scope required for protection is only limited by described claims.
Claims (12)
1. the two heat transfer structures that are applied to Solar Energy Heat Utilization System is characterized in that, described pair of heat transfer structure comprises trunk line, main heat transfer medium, auxiliary tube and time heat transfer medium; Described auxiliary tube is arranged in trunk line inside, and inferior heat transfer medium is in the auxiliary tube internal flow, and main heat transfer medium flows in the space of auxiliary tube outer wall and the formation of trunk line inwall.
2. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, described auxiliary tube is arranged in the collecting system and transport pipeline system of Solar Energy Heat Utilization System.
3. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, described auxiliary tube is arranged in the inside, whole heat transfer tubes road of normal heat absorption heat transfer cycle in the Solar Energy Heat Utilization System.
4. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, described auxiliary tube is arranged in the heat reservoir or heat-exchanger rig or expansion telescopic joint or low-pressure heater or oxygen-eliminating device of Solar Energy Heat Utilization System.
5. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that described auxiliary tube is arranged in the position of the pump housing or valve body; Perhaps be communicated in the pump housing or valve body heater.
6. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, main heat transfer medium is simple substance salt or salt-mixture or conduction oil or low-melting-point metal in the described pair of heat transfer structure.
7. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, the inferior heat transfer medium in the described auxiliary tube is water, steam, gas.
8. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, described time heat transfer medium high temperature attitude flows into auxiliary tube, and heat is passed to main heat transfer medium, implement to melt start.
9. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 1 is characterized in that, described time the heat transfer medium cold state flows in the auxiliary tube, and initiatively the heat of the main heat transfer medium of heat absorption recovery solidifies it.
10. two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 4, it is characterized in that, the heat-storage medium of described main heat transfer medium and heat reservoir internal placement is same substance, and main heat transfer medium directly enters the heat reservoir storing heat after absorbing heat.
11. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 5 is characterized in that, described a plurality of parallel auxiliary tubes are arranged in the main pipe in the same transport pipeline system.
12. the two heat transfer structures that are applied to Solar Energy Heat Utilization System according to claim 5 is characterized in that, described at least one auxiliary tube is arranged in a plurality of main pipes inside in the transport pipeline system respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012207267382U CN203148063U (en) | 2012-12-25 | 2012-12-25 | Dual heat transfer structure applied to solar heat utilization system |
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| CN2012207267382U CN203148063U (en) | 2012-12-25 | 2012-12-25 | Dual heat transfer structure applied to solar heat utilization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900271A (en) * | 2012-12-25 | 2014-07-02 | 北京兆阳光热技术有限公司 | Dual-heat-transmission structure applied to solar heat utilization system |
| CN104279538A (en) * | 2014-05-22 | 2015-01-14 | 深圳市爱能森设备技术有限公司 | Energy storage type solar overheat steam boiler adopting fused salt heat transfer and heat storage and method for preparing overheat steam by boiler |
-
2012
- 2012-12-25 CN CN2012207267382U patent/CN203148063U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900271A (en) * | 2012-12-25 | 2014-07-02 | 北京兆阳光热技术有限公司 | Dual-heat-transmission structure applied to solar heat utilization system |
| WO2014101762A1 (en) * | 2012-12-25 | 2014-07-03 | 北京兆阳光热技术有限公司 | Dual heat transfer structure for solar heat utilization system |
| CN103900271B (en) * | 2012-12-25 | 2016-08-17 | 北京兆阳光热技术有限公司 | A kind of double heat transfer structures being applied to Solar Energy Heat Utilization System |
| CN104279538A (en) * | 2014-05-22 | 2015-01-14 | 深圳市爱能森设备技术有限公司 | Energy storage type solar overheat steam boiler adopting fused salt heat transfer and heat storage and method for preparing overheat steam by boiler |
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