CN108662793A - Coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector - Google Patents
Coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector Download PDFInfo
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- CN108662793A CN108662793A CN201810433796.8A CN201810433796A CN108662793A CN 108662793 A CN108662793 A CN 108662793A CN 201810433796 A CN201810433796 A CN 201810433796A CN 108662793 A CN108662793 A CN 108662793A
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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 present invention relates to a kind of coil pipe thermal-collecting tubes and its heat collecting method for slot type photo-thermal power generation heat collector.Existing slot type generating heat collection tube is straight tube casing, and fused salt working medium flow is less in the process of running, and endotherm area is small, working medium flowed in straight tube it is too fast cause to absorb heat insufficient, cause luminous energy to waste, aggravate the burden of follow-up photo-thermal superheater.The present invention forms：Horminess glass tube（1）, horminess glass tube inner hub location is equipped with stainless steel straight tube（4）, nickel-base alloy coil pipe is wound between horminess glass tube and the stainless steel straight tube（2）, nickel-base alloy coil pipe outer wall coats light-absorbing coating, and stainless steel straight tube outer wall applies reflecting coating, and nickel-base alloy coil pipe inside stream is connected with heat-storage medium（3）, heat-storage medium is deep fat or fused salt, and the heat-storage medium inside stainless steel straight tube is deep fat, is vacuum interlayer between horminess glass tube and the stainless steel straight tube（5）.The present invention is used for the coil pipe thermal-collecting tube of slot type photo-thermal power generation heat collector.
Description
Technical field：
The present invention relates to a kind of coil pipe thermal-collecting tubes and its heat collecting method for slot type photo-thermal power generation heat collector.
Background technology：
Current existing slot type generating heat collection tube is straight tube casing, and fused salt working medium flow is less in the process of running for the structure,
And endotherm area is small, working medium flowed in straight tube it is too fast cause to absorb heat insufficient, cause luminous energy to waste, aggravate follow-up photo-thermal overheat
The burden of device.Thermal-collecting tube is the focus that slot type photo-thermal power generation throws face mirror optically focused, and conventional thermal-collecting tube is outer glass pipe, and interior straight section is stainless
Pipe, the casing situation that centre is evacuated, sunlight is by throwing fused salt or deep fat working medium in the mirror focal heat stainless pipe of face, heat
Working medium carries out heating to device of working medium in evaporator and generates steam；The vacuum environment maintenance of annual thermal-collecting tube, the dimension of light-absorbing coating
Shield and the maintenance cost of Ni-based thermal-collecting tube are very high, due to being micro-vacuum rather than authentic air atmosphere among casing, become round the clock or rain or shine
Change leads to expanding with heat and contract with cold in pipe, so that vapor, dust and nitrogen oxides etc. is entered thermal-collecting tube interlayer, influences vacuum environment,
And light-absorbing coating and Ni-based thermal-collecting tube are caused to corrode, reduce collecting efficiency and increase maintenance cost；
Based on above-mentioned background condition and with reference to helical water-cooled wall screen design feature in apparatus of thermo-electric power boiler, a kind of novel slot hair is invented
Electroplax pipe thermal-collecting tube is applied in the heat collector of slot type photo-thermal power generation, can either increase thermal-collecting tube extinction efficiency, pass through spiral knot
Structure controls fused salt refrigerant flow rate, while can reduce the corrosion expanded with heat and contract with cold and the variation of laminated vacuum atmosphere is caused to bring.
Invention content：
The object of the present invention is to provide a kind of coil pipe thermal-collecting tubes and its heat collecting method for slot type photo-thermal power generation heat collector.
Above-mentioned purpose is realized by following technical scheme：
A kind of coil pipe thermal-collecting tube for slot type photo-thermal power generation heat collector, composition include：Horminess glass tube, the hard glass
Glass pipe inner hub location is equipped with stainless steel straight tube, and nickel is wound between the horminess glass tube and the stainless steel straight tube
Based alloy coil pipe, the nickel-base alloy coil pipe outer wall coat light-absorbing coating, and the stainless steel straight tube outer wall applies reflecting coating,
The nickel-base alloy coil pipe inside stream is connected with heat-storage medium, and the heat-storage medium is deep fat or fused salt, and described is stainless
Heat-storage medium inside steel straight tube is deep fat, is vacuum interlayer between the horminess glass tube and the stainless steel straight tube.
The coil pipe thermal-collecting tube for slot type photo-thermal power generation heat collector, the nickel-base alloy coil pipe material are
Inconel625、 Incoloy825、Haynes230；The stainless steel straight tube material is TP321 austenitic stainless steels.
A kind of coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector, this method include following step
Suddenly：Thermal-collecting tube uses outer layer for horminess glass tube first, and internal layer is stainless steel straight tube, the mould of mid-wrap nickel-base alloy coil pipe
Formula, the nickel-base alloy coil pipe outer wall coat light absorbent, the nickel-base alloy coil pipe internal circulation deep fat or fused salt storage
Thermal medium generates electricity, and internal layer stainless pipe uses straight tube, outer wall to coat reflectorized material；Outer layer horminess glass tube and internal layer stainless steel
It being vacuumized among straight tube, the nickel-base alloy coil pipe is made to be placed in vacuum environment, medium is deep fat in internal layer stainless steel straight tube,
It absorbs secondary reflection light waste heat, night or cloudy day reversed heat release daytime, ensures the atmosphere of casing interlayer；
Coil pipe thermal-collecting tube absorbs throwing face mirror, i.e. the secondary reflection light of primary reflecting light on the outside of coil pipe and inner tube, and described is Ni-based
The heat-storage medium of alloy coil pipe internal circulation deep fat or fused salt, daytime absorb secondary reflection light.Residual temperature after inner tube reflection, night
Or the cloudy day carries out reversed heat release to collector tube system, ensures that air pressure in heat-collecting pipe vacuum system, reduction are inhaled due to expanding with heat and contract with cold
The influence of the vapor, dust and the nitrogen oxides that enter reduces damage of the corrosive environment to light-absorbing coating.
Advantageous effect：
1. the present invention is a kind of coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector, it is mainly used in slot
In the heat collector of formula photo-thermal power generation, which can either increase thermal-collecting tube extinction efficiency, and fused salt working medium is controlled by helical structure
Flow velocity, while the corrosion expanded with heat and contract with cold and the variation of laminated vacuum atmosphere is caused to bring can be reduced.
The present invention, instead of traditional straight section thermal-collecting tube, increases extinction area using coil pipe thermal-collecting tube structure, increases straight
Section unit length working medium flow, controlled medium flow velocity make working medium fully absorb heat, and collecting efficiency are promoted, in addition, increasing coil pipe knot
Structure makes interior straight tube generate on the inside of secondary reflection light heating coil, and interior straight tube working medium can in thermal-arrest on daytime, night reversed heat release,
Ensure air pressure in heat-collecting pipe vacuum system, reduces that due to expanding with heat and contract with cold to suck the influences such as vapor, dust and nitrogen oxides true
Altitude, and corrode light-absorbing coating, promote collecting efficiency and substantially reduce maintenance cost.
The thermal-arrest outer tube layer of the present invention is hard glass, and internal layer stainless steel straight tube material is the austenitic stainless steels such as TP321,
Outer wall coats reflectorized material, makes coil pipe thermal-collecting tube while absorbing throwing face mirror（On the outside of coil pipe）Primary reflecting light and inner tube it is secondary
Reflected light（On the inside of coil pipe）Medium is that deep fat either heats salt in coil pipe, absorbs photo-thermal, and medium is deep fat in internal layer stainless pipe,
It absorbs secondary reflection light waste heat, night or cloudy day reversed heat release daytime, ensures the atmosphere of casing interlayer.
Description of the drawings：
Attached drawing 1 is the structural schematic diagram of the present invention.
Specific implementation mode：
Embodiment 1：
A kind of coil pipe thermal-collecting tube for slot type photo-thermal power generation heat collector, composition include：Horminess glass tube 1, the hard
Glass tube center is equipped with stainless steel straight tube 4, is twined between the horminess glass tube and the stainless steel straight tube
Around nickel-base alloy coil pipe 2, the nickel-base alloy coil pipe outer wall coats light-absorbing coating, and the stainless steel straight tube outer wall applies reflective
Coating, the nickel-base alloy coil pipe inside stream are connected with heat-storage medium 3, and the heat-storage medium is deep fat or fused salt, described
Stainless steel straight tube inside heat-storage medium be deep fat, be vacuum between the horminess glass tube and the stainless steel straight tube
Interlayer 5.
Embodiment 2：
According to the coil pipe thermal-collecting tube described in embodiment 1 for slot type photo-thermal power generation heat collector, the nickel-base alloy coil pipe material
Matter is Inconel625, Incoloy825, Haynes230；The stainless steel straight tube material is TP321 austenitic stainless steels.
Embodiment 3：
A kind of heat collecting method using the coil pipe thermal-collecting tube for slot type photo-thermal power generation heat collector described in embodiment 1 or 2, the party
Method includes the following steps：Thermal-collecting tube uses outer layer for horminess glass tube first, and internal layer is stainless steel straight tube, the Ni-based conjunction of mid-wrap
The pattern of golden coil pipe, the nickel-base alloy coil pipe outer wall coat light absorbent, the nickel-base alloy coil pipe internal circulation heat
Oil or fused salt heat-storage medium generate electricity, and internal layer stainless pipe uses straight tube, outer wall to coat reflectorized material；Outer layer horminess glass tube and
It is vacuumized among internal layer stainless steel straight tube, the nickel-base alloy coil pipe is made to be placed in vacuum environment, in internal layer stainless steel straight tube
Medium is deep fat, absorbs secondary reflection light waste heat, night or cloudy day reversed heat release daytime, ensures the atmosphere of casing interlayer；
Coil pipe thermal-collecting tube absorbs throwing face mirror, i.e. the secondary reflection light of primary reflecting light on the outside of coil pipe and inner tube, and described is Ni-based
The heat-storage medium of alloy coil pipe internal circulation deep fat or fused salt, daytime absorb secondary reflection light.Residual temperature after interior straight tube reflection, night
Evening or cloudy day carry out reversed heat release to collector tube system, ensure air pressure in heat-collecting pipe vacuum system, reduce due to expanding with heat and contract with cold and
The influence of the vapor, dust and nitrogen oxides of sucking reduces damage of the corrosive environment to light-absorbing coating.
Claims (3)
1. a kind of coil pipe thermal-collecting tube for slot type photo-thermal power generation heat collector, composition include：Horminess glass tube, it is characterized in that：
The horminess glass tube inner hub location is equipped with stainless steel straight tube, and the horminess glass tube and the stainless steel are straight
Nickel-base alloy coil pipe is wound between pipe, the nickel-base alloy coil pipe outer wall coats light-absorbing coating, outside the stainless steel straight tube
Wall applies reflecting coating, and the nickel-base alloy coil pipe inside stream is connected with heat-storage medium, and the heat-storage medium is deep fat or melts
Salt, the heat-storage medium inside the stainless steel straight tube are deep fat, the horminess glass tube and the stainless steel straight tube it
Between be vacuum interlayer.
2. the coil pipe thermal-collecting tube according to claim 1 for slot type photo-thermal power generation heat collector, it is characterized in that：The nickel
Based alloy coil pipe material is Inconel625, Incoloy825, Haynes230；The stainless steel straight tube material is TP321
Austenitic stainless steel.
3. a kind of coil pipe thermal-collecting tube and its thermal-arrest side using for slot type photo-thermal power generation heat collector described in claims 1 or 22
Method, it is characterized in that：This method comprises the following steps：
Thermal-collecting tube uses outer layer for horminess glass tube first, and internal layer is stainless steel straight tube, the mould of mid-wrap nickel-base alloy coil pipe
Formula, the nickel-base alloy coil pipe outer wall coat light absorbent, the nickel-base alloy coil pipe internal circulation deep fat or fused salt storage
Thermal medium generates electricity, and internal layer stainless pipe uses straight tube, outer wall to coat reflectorized material；Outer layer horminess glass tube and internal layer stainless steel
It being vacuumized among straight tube, the nickel-base alloy coil pipe is made to be placed in vacuum environment, medium is deep fat in internal layer stainless steel straight tube,
It absorbs secondary reflection light waste heat, night or cloudy day reversed heat release daytime, ensures the atmosphere of casing interlayer；
Coil pipe thermal-collecting tube absorbs throwing face mirror, i.e. the secondary reflection light of primary reflecting light on the outside of coil pipe and inner tube, and described is Ni-based
The heat-storage medium of alloy coil pipe internal circulation deep fat or fused salt, daytime absorb secondary reflection light.Residual temperature after inner tube reflection, night
Or the cloudy day carries out reversed heat release to collector tube system, ensures that air pressure in heat-collecting pipe vacuum system, reduction are inhaled due to expanding with heat and contract with cold
The influence of the vapor, dust and the nitrogen oxides that enter reduces damage of the corrosive environment to light-absorbing coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433796.8A CN108662793A (en) | 2018-05-08 | 2018-05-08 | Coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433796.8A CN108662793A (en) | 2018-05-08 | 2018-05-08 | Coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector |
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| Publication Number | Publication Date |
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| CN108662793A true CN108662793A (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810433796.8A Pending CN108662793A (en) | 2018-05-08 | 2018-05-08 | Coil pipe thermal-collecting tube and its heat collecting method for slot type photo-thermal power generation heat collector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324230A (en) * | 1980-07-14 | 1982-04-13 | Lunsford Oscar M | Solar collector panel |
| CN1234489A (en) * | 1999-05-21 | 1999-11-10 | 李先航 | Spiral straight-flow type whole-glass vacuum solar heat-collecting tube |
| CN1609534A (en) * | 2004-11-23 | 2005-04-27 | 张耀明 | Solar energy high-temperature vacuum heat absorption and heat storage apparatus |
| CN201429245Y (en) * | 2009-06-18 | 2010-03-24 | 邢作新 | Improved high-efficiency solar heat collecting tube |
| CN204063653U (en) * | 2014-10-24 | 2014-12-31 | 张家港玉成精机股份有限公司 | A kind of spiral interior pipe vacuum heat collection pipe being suitable for the large temperature difference |
-
2018
- 2018-05-08 CN CN201810433796.8A patent/CN108662793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324230A (en) * | 1980-07-14 | 1982-04-13 | Lunsford Oscar M | Solar collector panel |
| CN1234489A (en) * | 1999-05-21 | 1999-11-10 | 李先航 | Spiral straight-flow type whole-glass vacuum solar heat-collecting tube |
| CN1609534A (en) * | 2004-11-23 | 2005-04-27 | 张耀明 | Solar energy high-temperature vacuum heat absorption and heat storage apparatus |
| CN201429245Y (en) * | 2009-06-18 | 2010-03-24 | 邢作新 | Improved high-efficiency solar heat collecting tube |
| CN204063653U (en) * | 2014-10-24 | 2014-12-31 | 张家港玉成精机股份有限公司 | A kind of spiral interior pipe vacuum heat collection pipe being suitable for the large temperature difference |
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Application publication date: 20181016 |