CN202442536U - Medium-high-temperature vacuum solar collector tube with double-layer vacuum heat insulation sleeve - Google Patents
Medium-high-temperature vacuum solar collector tube with double-layer vacuum heat insulation sleeve Download PDFInfo
- Publication number
- CN202442536U CN202442536U CN 201220061369 CN201220061369U CN202442536U CN 202442536 U CN202442536 U CN 202442536U CN 201220061369 CN201220061369 CN 201220061369 CN 201220061369 U CN201220061369 U CN 201220061369U CN 202442536 U CN202442536 U CN 202442536U
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- China
- Prior art keywords
- double
- muff
- layer vacuum
- vacuum heat
- stainless steel
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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 utility model discloses a medium-high-temperature vacuum solar collector tube with a double-layer vacuum heat insulation sleeve. The solar collector tube comprises a stainless steel tube, the double-layer vacuum heat insulation sleeve and a semi-closed ring, wherein the surface of the stainless steel tube is processed for higher light absorptivity, the double-layer vacuum heat insulation sleeve is made of full-quartz glass or hard glass, and the semi-closed ring is made of flexible semi-ventilated heat-resisting material. Since the double-layer vacuum full-glass tube is utilized, the problem of a conventional medium-high-temperature vacuum solar collector tube that a metal membrane and glass are technically difficult to weld is solved, product processing is easier, and reliability of long service is greatly improved.
Description
Technical field
What the present invention relates to is the new construction of solar vacuum heat-collecting pipe, particularly be middle high temperature solar vacuum heat collection pipe with double-layer vacuum muff.
Background technology
Traditional structure such as Fig. 1 of being used for the thermal-collecting tube of high temperature solar, it by the wavy metal diaphragm 3 of managing 1 in the stainless steel, transparent glass or quartzy outer tube 2, inner and outer pipes connect, and metallic membrane constitute with 4 of the pads that outer tube seals.Space in the stainless steel between pipe and the transparent outer tube is evacuated.In effective stainless steel process so that in fill the heat-transfer working medium of high temperature, high temperature oil for example, the withstand voltage height of stainless steel tube, unlikely generation thermal fracture and other mechanicalnesses are broken.Outer tube is made transparent, so that solar energy penetrates smoothly, is absorbed by interior pipe.The wavy metal diaphragm is in order to realize the sealing of inner and outer pipes, not reason elongation and sealing is broken again when interior pipe expanded by heating.The welding of metallic membrane and outer tube is in order to realize the last vacuum seal of inner and outer pipes.Vacuumize and be that pipe heats up in making the back heat is unlikely to lose because of convection heat transfer' heat-transfer by convection.
The shortcoming of said structure is: the welding of metallic membrane and outer tube is difficulty very; This is the welding between two kinds of coefficients of expansion and the diverse material of material; Make the sealing of solder joint absolute vacuum be difficult to carry out; Even adopt supertech that it has been welded, also very easily gas leakage in the stainless steel thermal-collecting tube goes up and down month after month the use throughout the year of temperature was repeatedly lost efficacy thermal-collecting tube.
Summary of the invention
The purpose of the new construction of solar vacuum heat-collecting pipe is to overcome the deficiency of above-mentioned technology, avoids metal and glass-sealed difficult point, and a kind of easy processing is provided, low cost, the muff structure that long-term reliability is high.
Technical scheme of the present invention such as Fig. 2.This solar energy heat collection pipe comprises: stainless steel tube 5; Double-layer vacuum muff 6; Semitight circle 7.There is common high pressure screwed pipe joint 5a at said stainless steel tube two ends, so that many pipes are connected to random length, the stainless steel tube outer surface has been done melanism or selective coating or roughening treatment, so that improve the absorption coefficient of thermal-collecting tube to sunshine; Said double-layer vacuum muff 6 is processed by quartz glass or hard glass; The two ends fusion vacuum seal welding of inner and outer pipes, the space between the inner and outer pipes is evacuated, and the vapor deposition getter; The surface of inner and outer pipes is done anti-reflection film and is handled; Improving the transmissivity of sunshine, the inner and outer pipes two ends make ripple endless belt 6a by the proximal head position, the stress that produces because of the temperature rise elongation with pipe in absorbing; Said semitight circle 7 can be processed by half ventilative exotic material by flexibility; It both can accomplish the mechanical positioning between stainless steel tube and the double-layer vacuum muff; Can stop a large amount of excessive generation heat loss of hot-air between the two again, also can accomplish the respiratory function when air is cold and hot changes between the two.
The invention has the beneficial effects as follows: replaced the vacuum tube that constitutes by stainless steel tube and glass outer tube with a double-layer vacuum muff.Metal and glass-sealed difficult point have been avoided.The manufacturing of product is more prone to, and reliability is higher, but has obtained the effect of vacuum heat-preserving equally.
Description of drawings
Fig. 1 is the structure of traditional warming solar energy thermal-collecting tube.
Fig. 2 is the structure of the middle high temperature solar heat-preservation heat-collection pipe that improved of the present invention.
The explanation of main sequence number in the accompanying drawing
1: stainless steel tube; 2: transparent outer sleeve; 3: the wavy metal diaphragm;
4: the seal weld contact of wavy metal diaphragm and outer tube;
5: stainless steel tube; 5a: high pressure screwed pipe joint; 6: the double-layer vacuum muff;
6a: ripple endless belt; 7a semitight circle.
Embodiment
With an external diameter Φ 47mm, wall thickness 1.5mm, internal diameter Φ 44mm, the quartz glass tube of length 1.8m is done interior pipe.Use an external diameter Φ 58mm again, wall thickness 1.5mm, internal diameter Φ 55mm, the quartz glass tube of length 1.8m is made outer tube.The two ends of inner and outer pipes are beforehand with out the ripple endless belt.Inner and outer pipes is melting sealed with one heart, make the bilayer sleeve of a sealing, stay the mouth of bleeding at the one of which end.This bilayer sleeve is evacuated to the 10-7 torr, getter in the evaporation, the mouth of will bleeding is again burnt sealing to death.Get an external diameter Φ 42mm, the high pressure screwed pipe joint is made at the stainless steel tube two ends of length 2m.This pipe inserted in the quartzy bilayer sleeve manage, in the annulus of the 1mm at two ends, fill in the fabric of alumina silicate fibre, make that pipe is fixed up with quartzy bilayer sleeve in the stainless steel, the while has also stoped the hot-air between two pipe seam cracks that the heat of interior pipe is brought out.This has just accomplished a thermal-collecting tube unit.Contacted through the high pressure screwed pipe joint at two ends in these unit, can form the thermal-collecting tube of random length.Be used for the high-temperature heat-gathering occasion, solar heat power generation system for example, just very effectively, safety, convenience.
Claims (4)
1. have the middle high temperature solar vacuum heat collection pipe of double-layer vacuum muff, it is characterized in that, said middle high temperature solar vacuum heat collection pipe with double-layer vacuum muff comprises: stainless steel tube (5), double-layer vacuum muff (6), semitight circle (7).
2. according to the middle high temperature solar vacuum heat collection pipe described in the claim 1 with double-layer vacuum muff; It is characterized in that; There is common high pressure screwed pipe joint (5a) at the two ends of said stainless steel tube (5), and the stainless steel tube outer surface has been done melanism or selective coating or roughening treatment.
3. according to the middle high temperature solar vacuum heat collection pipe described in the claim 1 with double-layer vacuum muff; It is characterized in that, said double-layer vacuum muff (6) by quartz glass or just matter glass process the two ends fusion vacuum seal welding of inner and outer pipes; Space between the inner and outer pipes is evacuated; And the vapor deposition getter, the surface of inner and outer pipes is done anti-reflection film and is handled, the inner and outer pipes two ends make ripple endless belt (6a) near the position, termination.
4. according to the middle high temperature solar vacuum heat collection pipe described in the claim 1, it is characterized in that said semitight circle (7) can be processed by half ventilative exotic material by flexibility with double-layer vacuum muff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220061369 CN202442536U (en) | 2012-02-24 | 2012-02-24 | Medium-high-temperature vacuum solar collector tube with double-layer vacuum heat insulation sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220061369 CN202442536U (en) | 2012-02-24 | 2012-02-24 | Medium-high-temperature vacuum solar collector tube with double-layer vacuum heat insulation sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442536U true CN202442536U (en) | 2012-09-19 |
Family
ID=46823984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220061369 Expired - Fee Related CN202442536U (en) | 2012-02-24 | 2012-02-24 | Medium-high-temperature vacuum solar collector tube with double-layer vacuum heat insulation sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050710A (en) * | 2017-12-20 | 2018-05-18 | 初梅 | A kind of solar thermal collector of automatic brushing |
-
2012
- 2012-02-24 CN CN 201220061369 patent/CN202442536U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050710A (en) * | 2017-12-20 | 2018-05-18 | 初梅 | A kind of solar thermal collector of automatic brushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20180224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |