CN1313780C - Working method for anti-cracking all-glass all-glass vacuum heat collecting tube of solar water heater - Google Patents
Working method for anti-cracking all-glass all-glass vacuum heat collecting tube of solar water heater Download PDFInfo
- Publication number
- CN1313780C CN1313780C CNB2004100212548A CN200410021254A CN1313780C CN 1313780 C CN1313780 C CN 1313780C CN B2004100212548 A CNB2004100212548 A CN B2004100212548A CN 200410021254 A CN200410021254 A CN 200410021254A CN 1313780 C CN1313780 C CN 1313780C
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- pipe
- annealing
- water tank
- sealing
- heat collection
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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
Abstract
The present invention relates to a method for processing an explosion prevention full-glass vacuum heat collection pipe, which comprises: an inner pipe and an outer pipe of a blank are firstly taken and are cut according to specified length; one end of each of the inner pipe and the outer pipe is roasted by fire so that a circular flat open end is formed and is an interface end of a water tank, and the other end of each of the inner pipe and the outer pipe is roasted by the fire to form a respectively reducing type circular seal end, wherein an exhaust pipe is reserved on the end of the outer pipe, and then, the end part is annealed; after the outer side of the inner pipe is coated with an absorption film, the inner pipe and the outer pipe cause the interface end of the water tank to be heated, connected and sealed by adopting a glass lathe; a seal plug of a heat insulation fireproof material is arranged between the interface end of the water tank and the coated absorption film of the inner pipe, and a triangular annealing nozzle is used for annealing in natural wind. The annealing temperature is from 500 to 650 DEG C, the annealing time is from 60 to 140 minutes, and then, evacuation and sealing are carried out by the exhaust pipe on the end part of the outer pipe to form a finished product. The present invention thoroughly eliminates the inner stress of the vacuum heat collection pipe to eradicate the happening of the phenomenon that the heat collection pipe is exploded and ruptured because cold water is rapidly added when the temperature of the heat collection pipe achieves more than 100 DEG C.
Description
Technical field
The invention belongs to technical field of water heaters, specifically a kind of processing method of solar water heater anti-cracking all-glass vacuum thermal-collecting tube.
Background technology
Along with improving constantly of people's living standard, select the family of solar water heater also more and more, most important part is the all-glass vacuum thermal-collecting tube that is used for absorbing heat in the solar water heater.At present, the mostly employing all-glass vacuum thermal-collecting tube of market sale, because all-glass vacuum thermal-collecting tube thermal efficiency height, and cost is lower; But the stress that is produced in the process of all-glass vacuum thermal-collecting tube is difficult to eliminate, reason is to need coating one deck solar absorbing film earlier on the outer wall of vacuum heat collection pipe inboard, this absorbing film will be destroyed when surpassing 400 ℃, and the annealing temperature of elimination vacuum heat collection pipe stress needs 500-650 ℃.And the water tank interface end of this vacuum heat collection pipe will link together with attemperater, if do not have in the attemperater under the situation of water or wretched insufficiency and can produce very high temperature in the thermal-collecting tube, higher in the summer environment temperature especially, anhydrous in the water tank, temperature rises rapidly in the glass heat collection tube, if at this moment add underground water immediately blasted pipe phenomenon will take place.Internal stress how to eliminate the water tank interface end generation of vacuum heat collection pipe is a difficult problem that is difficult to solution, and this will directly influence product quality.Although manufacturer all indicates on the product operation instruction: the user wants early water in evening, forbids empty the solarization, bursts preventing, the phenomenon that bursts still happens occasionally, and has brought inconvenience to people.Some producers then adopt the way of not leaking water in the pipe for fear of the problems referred to above, and modes such as increase precious metal heat transfer cause the big raising of cost of solar water heater, and the thermal efficiency does not improve, and has caused unnecessary financial burden to the user simultaneously.
Summary of the invention
The processing method that the purpose of this invention is to provide a kind of solar water heater anti-cracking all-glass vacuum thermal-collecting tube.In process, eliminate the internal stress of all-glass vacuum thermal-collecting tube, when reaching more than 100 ℃, add cold water rapidly, and burst the phenomenon generation of vacuum heat collection pipe to eradicate the thermal-collecting tube temperature.
The object of the present invention is achieved like this: its method is: get blank interior pipe and outer tube earlier and intercept scale long, baking an end of interior pipe and outer tube and make it form circular flat openend with fire respectively is the water tank interface end, bake the other end of interior pipe and outer tube and make it form tapering type circular seal end with fire respectively again, wherein this outer tunnel end is reserved with blast pipe, and anneal in this end then; Behind the outside coating ahsorption membrane with interior pipe, adopt glass work lathe with the heating of water tank interface end and be connected sealing with outer tube; Be provided with an insulating refractory sealing-plug between the water tank interface end of interior pipe and interior pipe coating ahsorption membrane, adopt triangle annealing mouth to anneal under natural wind, annealing temperature is between 500-650 ℃, and annealing time is 60-140 second; Be finished product after blast pipe by the outer tube end vacuumizes sealing then.
Above-mentioned insulating refractory sealing-plug is fire-resistant sealing-plug of stone mill or the fire-resistant sealing-plug of asbestos.During the annealing of water tank interface end behind interior pipe plated film, annealing temperature preferably between 560-590 ℃, annealing time is 90-120 second.
The present invention is owing to utilize the insulating refractory sealing-plug with isolated opening between water tank interface end and the coating ahsorption membrane layer, at short notice the water tank interface end is annealed then, in annealing process, coating ahsorption membrane layer temperature near the water tank interface end also is no more than 350 ℃, therefore, this processing step has promptly reached the purpose of stress relieving by annealing, does not injure absorbing membranous layer again.Taking off sealing-plug after the annealing gets final product.Natural wind is selected in annealing for use in addition, and annealing mouth venthole is processed into triangle annealing mouth, and flame is short and hard, has reached the effect that the water tank interface end eliminates stress fully, makes production tube reach at any time that upward water can bombing under the temperature.It is simple and convenient that the present invention also has process.
Description of drawings
Fig. 1 is a semi-finished product structural representation sketch of the present invention
Fig. 2 is the finished product simplified schematic diagram after annealing of the present invention vacuumizes sealing
To be described in further detail invention by example below, but following example only is the present invention's example wherein, the rights protection scope of not representing the present invention and being limited, the scope of the present invention is as the criterion with claims.
The specific embodiment
Example 1
Get interior pipe 1 of blank and outer tube 2 earlier and intercept scale long; Baking an end of interior pipe 1 and outer tube 2 and make it form circular flat openend with fire respectively is the water tank interface end, bake the other end of interior pipe and outer tube and make it form tapering type circular seal end with fire respectively again, wherein this outer tunnel end is reserved with blast pipe 4, and anneal in this end then; Behind the outside coating ahsorption membrane layer 3 with interior pipe, adopt glass work lathe with the heating of water tank interface end and be connected sealing with outer tube, as shown in Figure 1: between the water tank interface end of interior pipe and interior pipe coating ahsorption membrane, be provided with the fire-resistant sealing-plug of a stone mill, under natural wind, adopt triangle annealing mouth to anneal, annealing temperature is between 550-600 ℃, and annealing time is 80-120 second; Blast pipe 4 by the outer tube end vacuumizes then, and is finished product after taking off blast pipe 4 sealings, as shown in Figure 2.Concrete creation data is please referring to following table one
Table one
| Project | Annealing temperature ℃ | Annealing time (second) | Absorbing film maximum temperature ℃ |
| The fire-resistant sealing-plug of stone mill | 540-550 550-560 560-570 570-580 580-590 590-600 600-610 | 140 120 110 100 90 85 80 | 340 340 340 345 350 355 360 |
| The fire-resistant sealing-plug of asbestos | 540-550 550-560 560-570 570-580 580-590 590-600 600-610 | 135 120 110 100 90 85 80 | 340 340 345 345 350 360 370 |
Claims (3)
1, a kind of processing method of solar water heater anti-cracking all-glass vacuum thermal-collecting tube, its method is: get blank interior pipe and outer tube earlier and intercept scale long, baking an end of interior pipe and outer tube and make it form circular flat openend with fire respectively is the water tank interface end, bake the other end of interior pipe and outer tube and make it form tapering type circular seal end with fire respectively again, wherein this outer tunnel end is reserved with blast pipe, and anneal in this end then; Behind the outside coating ahsorption membrane with interior pipe, adopt glass work lathe with the heating of water tank interface end and be connected sealing with outer tube; Be provided with an insulating refractory sealing-plug between the water tank interface end of interior pipe and interior pipe coating ahsorption membrane, adopt triangle annealing mouth to anneal under natural wind, annealing temperature is between 500-650 ℃, and annealing time is 60-140 second; Be finished product after blast pipe by the outer tube end vacuumizes sealing then.
2, the processing method of vacuum heat collection pipe according to claim 1 is characterized in that: the insulating refractory sealing-plug is fire-resistant sealing-plug of stone mill or the fire-resistant sealing-plug of asbestos.
3, the processing method of vacuum heat collection pipe according to claim 1 is characterized in that: the annealing temperature that adopts triangle annealing mouth is between 560-590 ℃, and annealing time is 90-120 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100212548A CN1313780C (en) | 2004-04-09 | 2004-04-09 | Working method for anti-cracking all-glass all-glass vacuum heat collecting tube of solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100212548A CN1313780C (en) | 2004-04-09 | 2004-04-09 | Working method for anti-cracking all-glass all-glass vacuum heat collecting tube of solar water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563851A CN1563851A (en) | 2005-01-12 |
| CN1313780C true CN1313780C (en) | 2007-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100212548A Expired - Fee Related CN1313780C (en) | 2004-04-09 | 2004-04-09 | Working method for anti-cracking all-glass all-glass vacuum heat collecting tube of solar water heater |
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| CN (1) | CN1313780C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265020B (en) * | 2008-04-24 | 2010-12-01 | 皇明太阳能股份有限公司 | Glass pipe eccentric sealing technique |
| CN102145976B (en) * | 2010-02-10 | 2012-09-19 | 徐阳 | Process for sealing through type glass vacuum heat-collecting tube |
| CN102538251A (en) * | 2010-12-28 | 2012-07-04 | 济南鑫诺太阳能管业有限公司 | Solar vacuum tube |
| CN102226659B (en) * | 2011-04-28 | 2014-01-22 | 滁州伯恩太阳能科技有限公司 | Manufacturing method of solar heat collection tube |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122831A (en) * | 1976-04-28 | 1978-10-31 | U.S. Philips Corporation | Solar collector comprising an elongate absorber in an evacuated transparent tube |
| CN1147484A (en) * | 1996-07-02 | 1997-04-16 | 冶金工业部钢铁研究总院 | Heat-collecting glass tube thermal-conductance annealing process and equipment |
| CN1188216A (en) * | 1996-07-01 | 1998-07-22 | 李秋儒 | Coating spectral selectivity no-stripping absorption film for solar glass vacuum heat collector |
| WO1999030089A1 (en) * | 1997-12-08 | 1999-06-17 | Hwa Rang Park | Evacuated solar heat tube, optical concentration system and installation method thereof |
| CN2367976Y (en) * | 1999-01-26 | 2000-03-08 | 淮阴市阳光工程器材厂 | Through type all-glass vacuum solar heat-collecting tube |
| CN2392133Y (en) * | 1999-08-09 | 2000-08-16 | 郑慧敏 | Heat accumulation type full glass vacuum tube |
| CN1455213A (en) * | 2003-05-19 | 2003-11-12 | 张琪 | Solar collecting tube |
-
2004
- 2004-04-09 CN CNB2004100212548A patent/CN1313780C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122831A (en) * | 1976-04-28 | 1978-10-31 | U.S. Philips Corporation | Solar collector comprising an elongate absorber in an evacuated transparent tube |
| CN1188216A (en) * | 1996-07-01 | 1998-07-22 | 李秋儒 | Coating spectral selectivity no-stripping absorption film for solar glass vacuum heat collector |
| CN1147484A (en) * | 1996-07-02 | 1997-04-16 | 冶金工业部钢铁研究总院 | Heat-collecting glass tube thermal-conductance annealing process and equipment |
| WO1999030089A1 (en) * | 1997-12-08 | 1999-06-17 | Hwa Rang Park | Evacuated solar heat tube, optical concentration system and installation method thereof |
| CN2367976Y (en) * | 1999-01-26 | 2000-03-08 | 淮阴市阳光工程器材厂 | Through type all-glass vacuum solar heat-collecting tube |
| CN2392133Y (en) * | 1999-08-09 | 2000-08-16 | 郑慧敏 | Heat accumulation type full glass vacuum tube |
| CN1455213A (en) * | 2003-05-19 | 2003-11-12 | 张琪 | Solar collecting tube |
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| CN1563851A (en) | 2005-01-12 |
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Granted publication date: 20070502 Termination date: 20120409 |