CN102954608A - Condensing glass evacuated medium-temperature collector tube - Google Patents
Condensing glass evacuated medium-temperature collector tube Download PDFInfo
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- CN102954608A CN102954608A CN201210458206XA CN201210458206A CN102954608A CN 102954608 A CN102954608 A CN 102954608A CN 201210458206X A CN201210458206X A CN 201210458206XA CN 201210458206 A CN201210458206 A CN 201210458206A CN 102954608 A CN102954608 A CN 102954608A
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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
Abstract
The invention discloses a condensing glass evacuated medium-temperature collector tube, which comprises a glass shielding tube, an internal glass tube, a holder and degasifier, selective absorbing coating is coated on the outer wall of the internal glass tube, the internal glass tube is arranged in the glass shielding tube, the bottoms of the internal glass tube and the glass shielding tube are supported by the holder, the open ends of the internal glass tube and the glass shielding tube are welded to be sealed, the interlayer between the internal glass tube and the glass shielding tube is a vacuum layer, the degasifier is arranged on the holder, and a metal reflective condenser is arranged in the vacuum interlayer, and is fixed on the holder. The invention realizes the structural integration of the metal reflective condenser and the a solar evacuated tube, accomplishes the innovation of the a full-glass solar medium-temperature evacuated tube product, and can be applied to solar medium temperature. The condensing glass evacuated medium-temperature collector tube has the advantages of high cost performance and good economic benefit, and is suitable for mass production.
Description
Technical field
The invention belongs to field of solar energy utilization, particularly a kind of light collecting glass heat-collecting vacuum tube that is applicable to warm utilization in the solar energy.
Background technology
China's solar thermal utilization industry is being stepped into the preliminary stage of the science and technology great development of solar energy thermal-power-generating and the application of middle high temperature heat enginnering, at present all over China solar energy thermal-power-generating and the condenser system of middle high temperature heat enginnering be outer light collecting middle high-temp solar heat collector mostly, the straight-through type solar energy vacuum pipe is placed on the focal line of slot-type optical collector, obtain heat of high temperature, slot-type optical collector and solar energy vacuum tube are two parts of separating.
The outer employed straight-through type solar energy vacuum pipe of light collecting middle high-temp solar heat collector all is that steel pipe and glass enclosure tube fuse the metal-glass vacuum tube that forms by sealing basically, through high temperature refrigerant direct current transmission in steel pipe of optically focused heating.The manufacturing technology of metal-glass vacuum tube is complicated, and the manufacturing equipment investment is large, and production cost is high.And the floor space of described heat collector is large, and the paraboloid trough type reflective mirror need to be equipped with the tumbler from motion tracking daylight, and the engineering developed area is large; Be applicable to centralized scale thermal power generation project, not too be applicable to land resource city in short supply.Described reflective mirror exposes in atmosphere, wind and weather, to the wind resistance corrosion protection require highly, the maintenance work amount is larger, working life is shorter, is generally 5 years.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of light collecting glass evacuated temperature thermal-collecting tube that the reflecting condensation eyeglass is placed solar energy vacuum tube inside.The problem of having avoided reflective mirror generation chemical attack, external force damage to be out of shape has prolonged working life, is applicable to land resource area in short supply and uses.
Light collecting glass evacuated middle temperature thermal-collecting tube of the present invention, comprise that glass enclosure tube, outer wall are coated with the glass inner tube of coating for selective absorption, support and getter, described glass inner tube places in the described glass enclosure tube, in the bottom of glass inner tube and glass enclosure tube by stent support, openend welded seal, interlayer between glass inner tube and the glass enclosure tube is vacuum layer, described getter is arranged on the described support, it is characterized in that, be provided with the metallic reflection condenser in the described vacuum interlayer, described metallic reflection condenser is fixed on the support.
Preferably, the diameter of described glass inner tube be glass enclosure tube diameter 1/3 ~ 1/5.
Preferably, also be coated with coating getter on the inwall bottom the described glass enclosure tube.
Preferably, described coating for selective absorption is high temperature resistant coating for selective absorption, and the material of described glass enclosure tube and glass inner tube is high-boron-silicon glass.
Preferably, described glass inner tube adapts to the diameter of openend and the diameter of described glass enclosure tube at distance openend 70mm ~ 50mm place.
Preferably, described glass enclosure tube is respectively between the diameter of the diameter of glass inner tube and glass enclosure tube and adapts at distance openend 70mm ~ 50mm place to the diameter of openend to the diameter of openend and described glass inner tube at distance openend 70mm place.
Preferably, described metallic reflection condenser is mirror finish aluminium flake or mirror face stainless steel sheet or minute surface tin iron plate, and thickness is 0.3mm ~ 0.2mm, is shaped as slot light collection parabola or recessed curved caustic surface.
Preferably, the width of described metallic reflection condenser is 98mm, and the optically focused ratio is 5.
Preferably, the width of described metallic reflection condenser is 50mm ~ 62mm, and the optically focused ratio is 3.
Light collecting glass evacuated middle temperature thermal-collecting tube of the present invention, described metallic reflection condenser and glass solar vacuum body are integrated, the metallic reflection condenser is placed vacuum interlayer between glass enclosure tube and the glass inner tube, the solar light irradiation of assembling through the reflection of described metallic reflection condenser on glass inner tube, thereby reach the effect of light and heat collection.Because, the thermal-collecting tube of the present invention metallic reflection condenser is built in the vacuum tube, compared with prior art, because the metallic reflection condenser places vacuum environment, the chemical attack because of rain erosion, the problem of external force damage distortion have been avoided, in use do not need specially maintaining, prolonged working life.In actual applications, the metallic reflection condenser that is built in the vacuum tube has replaced slot-type optical collector, no longer needs large-area vacant lot to be used for slot-type optical collector is set, therefore large in the density of population, land resource region in short supply can be suitable for equally.
Simultaneously, the present invention has reduced the diameter of glass inner tube, in the situation that keep the glass enclosure tube diameter dimension constant, not only enlarged the space of vacuum interlayer, so that the installation of described metallic reflection condenser is more convenient, the shape setting of metallic reflection condenser is more various; And reduce glass inner tube absorber diameter, greatly improve the luminous energy density of glass inner tube absorber, thereby improve Temperature of Working in the glass inner tube.The optically focused of metallic reflection condenser is than 3 ~ 5, and the temperature range of working medium is between 80 ℃ ~ 300 ℃, and the working range of the heat collector of solar energy vacuum glass thermal-collecting tube assembling is extended to 100 ℃ ~ 300 ℃ mesophilic range work from the low-temperature working scope below 100 ℃.Thereby improved the function of solar energy glass vacuum pipe water heater, can the output high-temperature-hot-water, steam, in warm oil, be applied to heating, air-conditioning, distillation, drying, and food industry, textile and dyeing industry etc. need in the place of warm water and steam, enlarged the range of application of solar thermal utilization.
In addition, the manufacturing process of vacuum tube of the present invention and conventional solar energy glass vacuum pipe, the appearance and size of glass enclosure tube are identical, be convenient to integrate with the heat collector application, simple in structure, the system compatibility autgmentability is strong, and production cost is low, has higher cost performance, be suitable for large-scale production, good in economic efficiency.
In sum, the present invention has realized that metallic reflection condenser and solar energy vacuum tube are structure-integrated, finishes the innovation of warm vacuum tube product in the full-glass solar energy, has realized that temperature is used in solar energy.Have cost performance high, be suitable for large-scale production, good in economic efficiency advantage.
Description of drawings
Fig. 1 is the structural representation of light collecting glass evacuated middle temperature thermal-collecting tube of the present invention;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the structural representation of light collecting glass evacuated middle another embodiment of temperature thermal-collecting tube of the present invention.
Among the figure: 1-solar energy glass vacuum pipe, 2-glass inner tube, 3-coating for selective absorption, 4-metallic reflection condenser, 5-glass enclosure tube, 6-support, 7-vacuum interlayer, 8-getter, 9-coating getter.
The specific embodiment:
For clearer description technical scheme of the present invention, below in conjunction with the drawings and specific embodiments technical scheme of the present invention is further described, but is not for limiting embodiments of the present invention:
Such as Fig. 1, Fig. 2, shown in Figure 3, light collecting glass evacuated middle temperature thermal-collecting tube of the present invention is for being built in the metallic reflection condenser structure of solar energy glass vacuum pipe 1.Solar energy glass vacuum pipe 1 comprises that glass enclosure tube 5, outer wall are coated with the glass inner tube 2 of coating for selective absorption 3, support 6 and getter 8, the material of described glass enclosure tube 5 and glass inner tube 2 is preferably high-boron-silicon glass, and the coefficient of linear thermal expansion of high boron glass is (3.3 ± 0.1) * 10
-6K is therefore claim again Pyrex 3.3.Described glass inner tube 2 places in the described glass enclosure tube 5, in the bottom of glass inner tube 2 and glass enclosure tube 5 by support 6 support, the openend welded seal, interlayer between glass inner tube 2 and the glass enclosure tube 5 is vacuum layer, described getter 8 is arranged on the described support 6, consists of solar energy glass vacuum pipe 1.Preferably, also be coated with coating getter 9 on the inwall of described glass enclosure tube 5 bottoms.Described metallic reflection condenser 4 arranges in the vacuum interlayer 7 of described glass-vacuum tube 1 and is fixed on the support 6.Described metallic reflection condenser 4 is mirror finish aluminium flake or mirror face stainless steel sheet or minute surface tin iron plate, and thickness is 0.3mm ~ 0.2mm, is shaped as slot light collection parabola or recessed curved caustic surface.The solar light irradiation of assembling through 4 reflections of described metallic reflection condenser on glass inner tube 2, thereby reach the effect of light and heat collection.
Because thermal-collecting tube of the present invention is built in metallic reflection condenser 4 in the described vacuum tube 1, metallic reflection condenser 4 places vacuum environment, avoided the problem because of chemical attack and the external force damage distortion of rain erosion, in use do not need specially maintaining, prolonged working life.Simultaneously, in actual applications, do not need large-area vacant lot to be used for slot-type optical collector is set, therefore large in the density of population, land resource region in short supply can be suitable for equally.
Further, the diameter of glass inner tube described in the present invention 2 be glass enclosure tube 5 diameter 1/3～1/5.With respect to regular solar glass-vacuum tube 1, reduced the diameter of glass inner tube 2, in the situation that keep glass enclosure tube 5 diameter dimensions constant, not only enlarged the space of vacuum interlayer 7, so that the installation of described metallic reflection condenser 4 is more convenient, the shape setting of metallic reflection condenser 4 is more various.In this simultaneously, reduce the diameter of glass inner tube 2 absorbers, greatly improve the luminous energy density of glass inner tube 2 absorbers, thereby improve Temperature of Working in the glass inner tube 2.The working range of the heat collector of solar energy vacuum glass thermal-collecting tube assembling is extended to 100 ℃ ~ 300 ℃ mesophilic range work from the low-temperature working scope below 100 ℃.In order to improve the service life of described coating for selective absorption 3, described coating for selective absorption 3 is preferably high temperature resistant coating for selective absorption.
Since the diameter of glass inner tube 2 only be glass enclosure tube 5 diameter 1/3～1/5, differ larger.In order to reduce glass enclosure tube 5 and glass inner tube 2 in the technology difficulty of open end welding, the diameter of described glass inner tube 2 openends and described cloche openend is adjusted.Glass inner tube 2 is set to adapt with the diameter of glass enclosure tube 5 to the diameter of openend at distance openend 70mm ~ 50mm place, as shown in Figure 3.Perhaps described glass enclosure tube 5 is set to the numerical value between the diameter of the diameter of glass inner tube 2 and glass enclosure tube 5 and adapts at distance openend 50mm ~ 70mm place to the diameter of openend to the diameter of openend and described glass inner tube 2 at distance openend 70mm place respectively, as shown in fig. 1.
Specifically elaborate by following two embodiment:
Embodiment 1
Glass enclosure tube 5 external diameter 102mm, total length 1500mm or 1800mm; External diameter at distance glass enclosure tube 5 openend 70mm places to openend is 58mm; Glass inner tube 2 external diameter 20mm, the external diameter at distance glass inner tube 2 openend 70mm places to openend is 58mm, the material of glass enclosure tube 5 and glass inner tube 2 is Pyrex 3.3.Place metallic reflection condenser 4 shapes such as slot light collection parabola or other recessed curved caustic surface of vacuum interlayer 7, material is mirror finish aluminium flake or mirror face stainless steel sheet or minute surface tin iron plate, thickness 0.3mm-0.2mm, width is 98mm, optically focused is than 5, for large optically focused than light collecting glass evacuated middle temperature thermal-collecting tube.
Embodiment 2
Glass enclosure tube 5 external diameter 70mm, total length 1500mm or 1800mm; External diameter at distance glass enclosure tube 5 openend 70mm places to openend is 58mm; Glass inner tube 2 external diameter 20mm, the external diameter at distance glass inner tube 2 openend 50mm places to openend is 58mm or 47mm, the material of glass enclosure tube 5 and glass inner tube 2 is Pyrex 3.3.Place metallic reflection condenser 4 shapes such as slot light collection parabola or other recessed curved caustic surface of vacuum interlayer 7, material is mirror finish aluminium flake or mirror face stainless steel sheet or minute surface tin iron plate, thickness 0.3mm-0.2mm, width is 50mm or 62mm, the optically focused ratio is 3, for middle optically focused than light collecting glass evacuated middle temperature thermal-collecting tube.
The embodiment of the invention 2 described thermal-collecting tube air drying temperature are 300 ℃-400 ℃, and the performance test results take oil as working medium shows, 250 ℃ of oil temperatures.
Above embodiment is to technical scheme example of the present invention explanation; to those skilled in the art; under the prerequisite that does not deviate from the principle of the invention, any apparent improvement, replacement and modification to the present invention does all belong to protection scope of the present invention.
Claims (9)
1. light collecting glass evacuated middle temperature thermal-collecting tube, comprise glass enclosure tube (5), outer wall is coated with the glass inner tube (2) of coating for selective absorption (3), support (6) and getter (8), described glass inner tube (2) places in the described glass enclosure tube (5), bottom in glass inner tube (2) and glass enclosure tube (5) is supported by support (6), the openend welded seal, interlayer between glass inner tube (2) and the glass enclosure tube (5) is vacuum layer, described getter (8) is arranged on the described support (6), it is characterized in that, be provided with metallic reflection condenser (4) in the described vacuum interlayer (7), described metallic reflection condenser (4) is fixed on the support (6).
2. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 1 is characterized in that, the diameter of described glass inner tube (2) be glass enclosure tube (5) diameter 1/3 ~ 1/5.
3. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 1 is characterized in that, also is coated with coating getter (9) on the inwall of described glass enclosure tube (5) bottom.
4. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 1 is characterized in that, described coating for selective absorption (3) is high temperature resistant coating for selective absorption, and the material of described glass enclosure tube (5) and glass inner tube (2) is high-boron-silicon glass.
5. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 2 is characterized in that, described glass inner tube (2) adapts to the diameter of openend and the diameter of described glass enclosure tube (5) at distance openend 70mm ~ 50mm place.
6. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 2, it is characterized in that, described glass enclosure tube (5) is respectively between the diameter of the diameter of glass inner tube (2) and glass enclosure tube (5) and adapts at distance openend 70mm ~ 50mm place to the diameter of openend to the diameter of openend and described glass inner tube (2) at distance openend 70mm place.
7. each described light collecting glass evacuated middle temperature thermal-collecting tube according to claim 1-6, it is characterized in that, described metallic reflection condenser (4) is mirror finish aluminium flake or mirror face stainless steel sheet or minute surface tin iron plate, thickness is 0.3mm ~ 0.2mm, is shaped as slot light collection parabola or recessed curved caustic surface.
8. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 7 is characterized in that, the width of described metallic reflection condenser (4) is 98mm, and the optically focused ratio is 5.
9. light collecting glass evacuated middle temperature thermal-collecting tube according to claim 7 is characterized in that, the width of described metallic reflection condenser (4) is 50mm ~ 62mm, and the optically focused ratio is 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210458206XA CN102954608A (en) | 2012-11-14 | 2012-11-14 | Condensing glass evacuated medium-temperature collector tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210458206XA CN102954608A (en) | 2012-11-14 | 2012-11-14 | Condensing glass evacuated medium-temperature collector tube |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201037699Y (en) * | 2007-01-12 | 2008-03-19 | 王义达 | Inner light gathering type whole-glass vacuum thermal-collecting tube |
| CN101236021A (en) * | 2007-08-27 | 2008-08-06 | 东南大学 | Focusing type straight-through vacuum heat collection device |
| CN101413724A (en) * | 2008-12-01 | 2009-04-22 | 王学明 | High temperature and high pressure solar vacuum tube |
| CN101625162A (en) * | 2009-08-17 | 2010-01-13 | 钱侃 | Novel solar water heater and installing method thereof |
| CN1710351B (en) * | 2004-06-18 | 2012-01-04 | 淄博环能海臣环保技术服务有限公司 | Single-way reducing glass solar vacuum heat collector fitted with reflective collecting mirror |
| CN203036889U (en) * | 2012-11-14 | 2013-07-03 | 程翠英 | Light-collecting type glass vacuum medium temperature heat-collecting pipe |
-
2012
- 2012-11-14 CN CN201210458206XA patent/CN102954608A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710351B (en) * | 2004-06-18 | 2012-01-04 | 淄博环能海臣环保技术服务有限公司 | Single-way reducing glass solar vacuum heat collector fitted with reflective collecting mirror |
| CN201037699Y (en) * | 2007-01-12 | 2008-03-19 | 王义达 | Inner light gathering type whole-glass vacuum thermal-collecting tube |
| CN101236021A (en) * | 2007-08-27 | 2008-08-06 | 东南大学 | Focusing type straight-through vacuum heat collection device |
| CN101413724A (en) * | 2008-12-01 | 2009-04-22 | 王学明 | High temperature and high pressure solar vacuum tube |
| CN101625162A (en) * | 2009-08-17 | 2010-01-13 | 钱侃 | Novel solar water heater and installing method thereof |
| CN203036889U (en) * | 2012-11-14 | 2013-07-03 | 程翠英 | Light-collecting type glass vacuum medium temperature heat-collecting pipe |
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Application publication date: 20130306 |