CN101839562A - Preparation method, devices and product of heat-collecting element of inner glass tube with metal absorber - Google Patents
Preparation method, devices and product of heat-collecting element of inner glass tube with metal absorber Download PDFInfo
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- CN101839562A CN101839562A CN201010122774A CN201010122774A CN101839562A CN 101839562 A CN101839562 A CN 101839562A CN 201010122774 A CN201010122774 A CN 201010122774A CN 201010122774 A CN201010122774 A CN 201010122774A CN 101839562 A CN101839562 A CN 101839562A
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- glass tube
- inner glass
- metal
- vacuum heat
- metallic substrates
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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 invention provides a preparation method of a heat-collecting element of an inner glass tube with a metal base. The method is to connect covering metal material or patching metal, spray metal and plating metal with an inner glass tube under low thermal resistance to prepare metal base. The vacuum heat-collecting element of the inner glass tube with the metal base prepared by the method is prepared from the inner glass tube and a shielding glass tube by melting sealing and evacuating. The heat-collecting element is characterized in that the inner glass tube is covered with metal material or patched, sprayed and plated with metal layers which are called metal base; and the metal base contains an absorption film. The invention also provides the special devices for chemical vapor deposition and plasma etching according to the method. The beneficial effects of the invention are as follows: the melting sealing technology with high reliability and low cost is maintained; and more selective absorption films based on base metal such as little rough surface selective absorption film can be obtained. The selective absorption film has higher absorptivity and lower emissivity, and can collect heat stably and efficiently under high temperature and greatly reduce the absorption film maximum temperature in the concentrating and heat-collecting mode, lower heat loss and prolong the life of the absorption film. Two embodiments are provided in combination with figures.
Description
Technical field
The present invention relates to vacuum heat collection element manufacture method, equipment and the product of inner glass tube band metallic substrates absorber.
Background technology
Existing all-glass vacuum thermal-collecting tube adopts inner glass tube and cover glass tube to melt envelope, has reliability height, advantage that cost of manufacture is low.But make absorbing film on the inner glass tube because of being limited to, its performance is subjected to the influence of glass substrate that big development or breakthrough can not be arranged.For example be difficult to obtain efficient under medium and high temperature, as to stablize thermal-arrest selective absorbing film.
Summary of the invention
The objective of the invention is to provide vacuum heat collection element manufacture method, equipment and the product of inner glass tube band metallic substrates absorber.
The present invention solves the method that its technical problem is taked: connect coated metal roll bending spare or by warding off metal, spray metal, plating and the chemical replacement formation coat of metal metallic substrates is set on inner glass tube at low thermal resistance on the inner glass tube.Described metallic coil plate does not have wing plate shape.Metallic substrates will be stood the high temperature of follow-up vacuum bakeout.Requirement still keeps low thermal resistance to connect in the heat-collecting temperature scope during metallic coil plate expanded by heating of parcel.Inner glass tube also can be the hot junction of a heat pipe.On inner glass tube, ward off, the concrete making of spraying, plated metal can with reference in the prior art about on glass or insulator, ward off, spray, the content of plating or chemical replacement metal.Metallic substrates can be wrapped up inner glass tubes by 360 ° of angles of circumference; Also can partly wrap up inner glass tube less than 360 ° angle of circumference.All or part of outer surface in metallic substrates is made absorbing film, comprises selective absorbing film that vacuum sputtering selective absorbing film, electrochemical process are made and the little uneven surface selectivity absorbing film that utilizes technology preparations such as chemical vapour deposition (CVD), cosputtering or plasma etching.The above-mentioned inner glass tube circle envelope that is shaped on absorbing film is inserted the cover glass tube of one one end circle envelope inwardly and melted envelope with cover glass tube, the interlayer between two glass tubes is vacuumized and can working medium, the vacuum heat collection element of making an inner glass tube band metallic substrates absorber comprises the heat-tube vacuum heat collecting element again.
The present invention solves one of technical scheme that its technical problem takes according to said method: form a cover inner glass tube band metallic substrates absorber heat collecting element special equipment chemical vapor deposition unit with vacuum deposition chamber and control system.The inner glass tube plug of its surface band tubular air bag is contained in vacuum deposition chamber, and the tubular air bag is communicated with a controllable pressure source.
The present invention solves two of technical scheme that its technical problem takes according to said method: form a cover inner glass tube band metallic substrates absorber heat collecting element special equipment plasma etching device with plasma etching machine and control system.The plasma etching machine contains the inner glass tube plug of its surface band tubular air bag, and the tubular air bag is communicated with a controllable pressure source.
The present invention solves three of technical scheme that its technical problem takes according to said method: low thermal resistance connects parcel layer of metal material on inner glass tube, makes absorbing film on metal material.Inner glass tube is inserted cover glass tube and melt envelope, vacuumize and can working medium, make the vacuum heat collection element of an inner glass tube band metallic substrates absorber.
The present invention solves four of technical scheme that its technical problem takes according to said method: ward off metal or spray metal on inner glass tube, make absorbing film warding off on the layer of spray metal.Inner glass tube is inserted cover glass tube and melt envelope, vacuumize and can working medium, make the vacuum heat collection element of an inner glass tube band metallic substrates absorber.
The present invention solves five of technical scheme that its technical problem takes according to said method: internally glass tube exterior surface is handled and is comprised one deck conductive layer is set, and at this inner glass tube outer surface by electroplating or chemical replacement forms the coat of metal.On the coat of metal, make absorbing film or directly utilize this coat of metal to make absorbing film.Inner glass tube is inserted cover glass tube and melt envelope, vacuumize and can working medium, make the vacuum heat collection element of an inner glass tube band metallic substrates absorber.
Its fusing point also can be set between metal material that wraps up inner glass tube and inner glass tube comprise that at the low-melting-point metal of 200～500 ℃ of scopes steel plate institute plate golding aluminium zinc alloy is exactly a low-melting-point metal with aluminum-zinc alloy steel plate parcel inner glass tube.
Also can on inner glass tube, connect the vacuum heat collection element that the coiling metal material comprises wire, metal tape and sheet metal manufacturing inner glass tube band metallic substrates absorber by low thermal resistance.Can retain or not retain the gap between adjacent two metal materials.
The metal material that low thermal resistance connects the parcel inner glass tube also can adopt roll bending spare, and on roll bending spare the conduit that is communicated with vacuum heat-insulating layer is set.
Also can on the metal material of parcel inner glass tube, hole be set, comprise the hole of even distribution, outward flanging.
Beneficial effect of the present invention comprises: with the special-purpose chemical vapor deposition unit of inner glass tube band metallic substrates absorber heat collecting element and the streamline of vacuum deposition chamber and control system manufacturing; And special-purpose plasma etching device of inner glass tube band metallic substrates absorber heat collecting element and the streamline made with plasma etching machine and control system.The special equipment of little uneven surface selectivity absorbing film is provided.On these special equipments, adopt the inner glass tube plug of its surface band tubular air bag, can provide the enough big grip of inner glass tube is not damaged inner glass tube.
Metallic substrates is being set on the inner glass tube and on metallic substrates, is making absorbing film, comprise little uneven surface selectivity absorbing film, both kept high reliability, inner glass tube and cover glass tube melt envelope technology cheaply, can design more selective absorbing films again and comprise middle high-temperature selective absorbing film based on metallic substrates.Metal such as gold, silver, copper, aluminium, nickel or molybdenum have good electric conductivity and good thermal conductivity, infrared high reflection are promptly launched than low.Metallic substrates has strengthened the binding ability with absorbing film, makes it can stand higher temperature.This makes the selective absorbing film that is made on the metallic substrates have higher absorptivity, lower emissivity; Can under hot conditions, stablize, thermal-arrest efficiently; Can reduce absorbing film maximum temperature, minimizing heat waste, the prolongation absorbing film life-span at focal spot place under the light and heat collection pattern significantly.
The low-melting-point metal of its fusing point 200～500 ℃ of scopes is set between the metal material of inner glass tube and parcel, and the time reaches this fusion temperature in baking and make low-melting-point metal melt crystallization again, can obtain desirable heat transfer interface inner glass tube.Metal material does not run off when the interaction energies such as capillary force of low-melting-point metal are guaranteed its fusing.
The metal material of reeling on inner glass tube can adopt thin metal material, can make metal material that the inner glass tube of being reeled is had uniform pressure, helps conducting heat.On inner glass tube coiling layer of metal material as ward off, substrate that metal spraying belongs to and as electroplated electrode can obtain to ward off uniformly, spray and plated metal layer thickness and good surface quality.
Description of drawings
Further be illustrated below in conjunction with drawings and Examples.
Fig. 1 is the heat-tube vacuum heat collecting element structural representation of inner glass tube band metallic substrates absorber.
Fig. 2 is the vacuum heat collection element structural representation of another inner glass tube band metallic substrates absorber.
1. cold junctions among the figure; 2. inner glass tube; 3. cover glass tube; 4. roll bending spare; 5. flap; 6. vacuum heat-insulating layer; 7. conduit.
The specific embodiment
Among Fig. 1, the inner glass tube 2 of double as heat pipe cold junction 1 and cover glass tube 3 melt envelope and vacuumize the heat-tube vacuum heat collecting element of making an inner glass tube coated metal roll bending spare 4.Roll bending spare 4 adopts galvanized sheet, is shaped on absorbing film on it, and its two straight flanges respectively contain one section flap 5.Two sections flaps 5 can adopt the electric resistance welding stitch welding to connect, and make roll bending spare 4 connect parcel inner glass tube 2 with 360 ° of whole low thermal resistances of angle of circumference.Require roll bending spare 4 edges, welding back not contact with cover glass tube 3.Can form the bigger pressure of 4 pairs of inner glass tubes of roll bending 2 by welding; The zinc fusing forms the good heat transfer interface during vacuum bakeout.
Among Fig. 2, inner glass tube 2 and cover glass tube 3 melt envelope and vacuumize the vacuum heat collection element of making an inner glass tube coated metal roll bending spare 4.Be shaped on absorbing film on the roll bending spare 4 and contain the conduit 7 that is communicated with vacuum heat-insulating layer 6.
On the metallic coil plate 4 of parcel inner glass tube, equally distributed hole is set, and the conduit 7 that is communicated with vacuum heat-insulating layer 6 of setting, help to vacuumize.Such roll bending spare 4 can adopt special veneer reeling machine processing and fabricating.
Fig. 2 embodiment adopts embedded metal roll bending spare 4 partly to wrap up inner glass tube 2 with the angle of circumference less than 360 °.Can either guarantee that roll bending spare 4 is close to inner glass tube 2, can save material again, also convenient the manufacturing, and can reduce the discharge quantity of metal parts in the vacuum heat-insulating layer.
Maiden trial, with three target vacuum sputtering coating machines, 410 ℃ of bakings, the absorptivity of absorbing film is 93.1% on the galvanized steel plain sheet.
Claims (10)
1. the vacuum heat collection element manufacture method of inner glass tube band metallic substrates absorber: connect coated metal roll bending spare or on inner glass tube, form the coat of metal metallic substrates is set by warding off metal, spray metal, plating and chemical replacement at low thermal resistance on the inner glass tube; Described metallic coil plate does not have wing plate shape; Metallic substrates can be wrapped up inner glass tubes by 360 ° of angles of circumference; Also can partly wrap up inner glass tube less than 360 ° angle of circumference; All or part of outer surface in metallic substrates is made absorbing film; The above-mentioned inner glass tube circle envelope that is shaped on absorbing film is inserted the cover glass tube of one one end circle envelope inwardly and melted envelope with cover glass tube, again the interlayer between two glass tubes is vacuumized and can working medium, make the vacuum heat collection element or the heat-tube vacuum heat collecting element of an inner glass tube band metallic substrates absorber.
2. the vacuum heat collection element special equipment chemical vapor deposition unit of the inner glass tube band metallic substrates absorber of making according to the described method of claim 1, form by vacuum deposition chamber and control system, it is characterized in that vacuum deposition chamber contains the inner glass tube plug of its surface band tubular air bag, the tubular air bag is communicated with a controllable pressure source.
3. the vacuum heat collection element special equipment plasma etching device of the inner glass tube band metallic substrates absorber of making according to the described method of claim 1, form by plasma etching machine and control system, it is characterized in that the plasma etching machine contains the inner glass tube plug of its surface band tubular air bag, the tubular air bag is communicated with a controllable pressure source.
4. the vacuum heat collection element of the inner glass tube band metallic substrates absorber of making according to the described method of claim 1, comprise the heat-tube vacuum heat collecting element, melting envelope by inner glass tube and cover glass tube vacuumizes and makes, it is characterized in that the low thermal resistance connection is enclosed with the layer of metal material on the inner glass tube, contain absorbing film on the described metal material; Described metal material does not have wing plate shape.
5. the vacuum heat collection element of the inner glass tube band metallic substrates absorber of making according to the described method of claim 1, comprise the heat-tube vacuum heat collecting element, melting envelope by inner glass tube and cover glass tube vacuumizes and makes, it is characterized in that containing on the inner glass tube one deck and ward off metal level or contain the layer of metal sprayed coating, described warding off on metal level or the sprayed metal coating contained absorbing film.
6. the vacuum heat collection element of the inner glass tube band metallic substrates absorber of making according to the described method of claim 1, comprise the heat-tube vacuum heat collecting element, melting envelope by inner glass tube and cover glass tube vacuumizes and makes, it is characterized in that the inner glass tube outer surface contains layer of metal coating, contains absorbing film on the described coat of metal.
7. according to claim 4 or 5 or 6 described heat collecting elements, it is characterized in that the low thermal resistance connection is wound with metal material on the inner glass tube.
8. heat collecting element according to claim 4 is characterized in that wrapping up between the metal material of inner glass tube and the inner glass tube and contains the low-melting-point metal of its fusing point 200～500 ℃ of scopes.
9. heat collecting element according to claim 4, the metal material that it is characterized in that wrapping up inner glass tube is a roll bending spare, and two straight flanges of described roll bending spare respectively contain one section flap, and two sections flaps are welded to connect; Described roll bending spare contains the conduit that is communicated with vacuum heat-insulating layer.
10. heat collecting element according to claim 4 is characterized in that the metal material that wraps up inner glass tube contains hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122774A CN101839562A (en) | 2010-03-12 | 2010-03-12 | Preparation method, devices and product of heat-collecting element of inner glass tube with metal absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122774A CN101839562A (en) | 2010-03-12 | 2010-03-12 | Preparation method, devices and product of heat-collecting element of inner glass tube with metal absorber |
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| CN101839562A true CN101839562A (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010122774A Pending CN101839562A (en) | 2010-03-12 | 2010-03-12 | Preparation method, devices and product of heat-collecting element of inner glass tube with metal absorber |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043318A (en) * | 1974-06-24 | 1977-08-23 | Owens-Illinois, Inc. | Solar energy collector |
| CN2261600Y (en) * | 1996-05-28 | 1997-09-03 | 韩广田 | Heat conducting vacuum collecting pipe |
| CN2428730Y (en) * | 2000-07-07 | 2001-05-02 | 北京清华阳光能源开发有限责任公司 | Full-glass vacuum solar heat-collection tube for portable water boiler |
| CN2474960Y (en) * | 2001-05-10 | 2002-01-30 | 战余英 | Vacuum glass solar energy heat collecting tube |
| CN2485596Y (en) * | 2000-12-26 | 2002-04-10 | 新渠热传导技术应用开发(大连)有限公司 | Heat transferer |
| CN1363809A (en) * | 2001-01-02 | 2002-08-14 | 王征 | Full-glass heat-collecting vacuum tube with top cap |
| CN1469088A (en) * | 2002-07-19 | 2004-01-21 | 罗桂荣 | Combined solar heat collector with vacuum pipe and heat-transferring metal element and device |
-
2010
- 2010-03-12 CN CN201010122774A patent/CN101839562A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043318A (en) * | 1974-06-24 | 1977-08-23 | Owens-Illinois, Inc. | Solar energy collector |
| CN2261600Y (en) * | 1996-05-28 | 1997-09-03 | 韩广田 | Heat conducting vacuum collecting pipe |
| CN2428730Y (en) * | 2000-07-07 | 2001-05-02 | 北京清华阳光能源开发有限责任公司 | Full-glass vacuum solar heat-collection tube for portable water boiler |
| CN2485596Y (en) * | 2000-12-26 | 2002-04-10 | 新渠热传导技术应用开发(大连)有限公司 | Heat transferer |
| CN1363809A (en) * | 2001-01-02 | 2002-08-14 | 王征 | Full-glass heat-collecting vacuum tube with top cap |
| CN2474960Y (en) * | 2001-05-10 | 2002-01-30 | 战余英 | Vacuum glass solar energy heat collecting tube |
| CN1469088A (en) * | 2002-07-19 | 2004-01-21 | 罗桂荣 | Combined solar heat collector with vacuum pipe and heat-transferring metal element and device |
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Open date: 20100922 |