CN204705056U - A kind of novel glass hot pipe type vacuum heat collection pipe - Google Patents
A kind of novel glass hot pipe type vacuum heat collection pipe Download PDFInfo
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- CN204705056U CN204705056U CN201520294925.1U CN201520294925U CN204705056U CN 204705056 U CN204705056 U CN 204705056U CN 201520294925 U CN201520294925 U CN 201520294925U CN 204705056 U CN204705056 U CN 204705056U
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- glass
- pipe
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- fusing
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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
A kind of novel glass hot pipe type vacuum heat collection pipe, primary structure comprises vacuum glass outer tube and glass heat pipe.Glass heat pipe closed at both ends, inside is filled with heat-transfer working medium, and has certain vacuum.Glass heat pipe is divided into evaporator section, welding section and condensation segment.Evaporator section outer wall coating coating for selective absorption is also placed in vacuum glass outer tube by self-centering support.Welding section is welded with sealing by fusing pad.Outer glass tube openend connects with sealing by fusing pad, and the other end vacuumizes rear sealing by fusing, and keeps vacuum by getter.What the utility model achieved outer tube and heat pipe by sealing by fusing pad is separated welding, eliminates second heat stress, long service life; All-glass construction is adopted to reduce costs, Simplified flowsheet.
Description
Technical field
The utility model relates to a kind of novel glass hot pipe type vacuum heat collection pipe, belongs to solar energy heat utilization field.
Background technology
Vacuum heat collection pipe, as the core parts of solar water heater, is the key improving heat-tube apparatus solar collecting performance and product competitiveness.Through the development of nearly decades, structurally there is many innovations in vacuum heat collection pipe, performance also improves constantly, but still there is many shortcomings.
Traditional vacuum heat collection pipe adopts the structure vacuumized between double glazing.Inner glass tube outer surface plating coating for selective absorption is to improve solar radiative absorption rate.Interior outer glass pipe is coaxial and one end is closed, and the other end is connected by direct scorification.This thermal-collecting tube is leaked water in managing, and device of working medium directly absorbs heat by the heat conduction of inner tubal wall, and efficiency is lower.After using over a long time, interior duct ligation dirt also can reduce heat transfer property greatly.In use also because not going up water in time or the factor such as night in winter is not emptying and cause booster, unnecessary loss can be brought to user and dealer.
Considering the shortcoming of leaking water in pipe, propose the vacuum heat collection pipe of not leaking water in pipe, take hot pipe type vacuum heat collection pipe as representative.Heat pipe is a kind of heat conducting element efficiently, utilizes twice phase transformation transferring heat of working media.Heat pipe is combined developed hot pipe type vacuum heat collection pipe to have heat transfer efficiency high with vacuum heat collection pipe, the advantages such as good frost resistance.Disclosed in the patent No. 200610098390.6, a kind of metal fever tube type vacuum heat-collecting tube, inserts seal welding in metal flange by metal heat pipe.Metal flange is by kovar alloy and outer glass tube mouth sealing by fusing.Although have employed the kovar alloy that expansion rate is relatively low, still there is the comparatively difficult problem of processing.Because metal is different from the expansion rate of glass, in Long-Time Service, sealing by fusing place easily produces gap, cannot ensure vacuum, reduces thermal-collecting tube efficiency.Belong to metal material together and add manufacturing cost, price does not possess competitiveness.Another kind of hot pipe type vacuum heat collection pipe adopts full glass heat pipe type structure, a kind of heat pipe type full-glass vacuum solar collector pipe disclosed in the patent No. 201210014689.4.Its thinking utilizes glass heat pipe to replace metal heat pipe.In manufacture craft, by vacuum glass tube, from ring seal rim of a cup place, coaxial also equal diameter extension forms the condensation segment of glass heat pipe, then injects working medium in inside pipe and vacuumizes.Weak point is the existence of ring seal place due to thermal stress, easily breaks when reality uses; Owing to welding heat pipe condenser section again after outer wall of inner tube coating coating for selective absorption, high temperature can make the coating of interface volatilize, and affects Heat-collecting effect.
Utility model content
For the above-mentioned defect of prior art, the utility model proposes a kind of novel glass heat-pipe vacuum heat collecting pipe, weaken the thermal stress at heat pipe and glass bushing sealing by fusing place, improve thermal-collecting tube security and service life.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of novel glass hot pipe type vacuum heat collection pipe 8, primary structure comprises outer glass tube 1 and glass heat pipe 2.Glass heat pipe 2 closed at both ends, inside is filled with heat-transfer working medium 6, and has certain vacuum.Sealing by fusing pad 4 is set in the middle part of glass heat pipe 2.Sealing by fusing pad 4 adopts the material identical with glass heat pipe with outer glass tube 1 to make.Sealing by fusing pad 4 is annular, and internal diameter is identical with glass heat pipe 2 external diameter, and its external diameter is identical with outer glass tube 1 external diameter.Glass heat pipe 2 is divided into evaporator section 201 and condensation segment 202.The length of evaporator section 201 and condensation segment 202 can be different with exporting Demand Design according to average annual irradiation level length ratio.Evaporator section 201 outer wall coating coating for selective absorption 3.Evaporator section 201 supports 5 by self-centering and is placed in vacuum glass outer tube 1.Outer glass tube 1 openend connects with sealing by fusing pad 4, and the other end vacuumizes rear sealing by fusing, and keeps certain vacuum by getter 7.Concrete procedure of processing is:
(1) get an one end open, one end close and the less shell of diameter as glass heat pipe 2, after evaporator section 201 and condensation segment 202 length determination sealing by fusing pad 4 position, sealing by fusing pad 4 is welded on glass heat pipe;
(2) by glass heat pipe 2 together with the sealing by fusing pad 4 welded through draw envelope annealing after, plate coating for selective absorption 3 at evaporator section 201;
(3) get two ends and be opening, and the external diameter shell equal with sealing by fusing pad 4 external diameter is as outer glass tube 1.After its one end is welded with sealing by fusing pad 4, interlayer between pipe is put in self-centering support 5 and getter 7, glass heat pipe 2 is fixed;
(4) pipe assembled at high temperature is toasted exhaust, vacuumized and sealing by fusing by outer glass tube 1 pipe tail;
(5) in glass heat pipe 2, be filled with quantitative working medium 6, under high temperature, again toast exhaust, vacuumized and sealing by fusing by glass heat pipe 2 top.
Beneficial effect:
(1) realized the weld separation of outer tube and glass heat pipe by sealing by fusing pad, eliminate heat pipe secondary thermal stress, enhance heat-resisting quantity and the service life of heat pipe.
(2) compare traditional manufacture craft, due to the use of sealing by fusing pad, because of high temperature, the plated film coating of interface is volatilized when avoiding inner and outer pipes sealing by fusing, Heat-collecting effect is better.
(3) overall employing all-glass construction, low cost of manufacture.
(4) heat pipe adopts phase-change heat-exchange, and its heat-transfer capability is large, and efficiency is high.
(5) heat pipe has auto-startup characteristic.When temperature is lower, working medium remains liquid, and in pipe, vacuum is higher, and can form the effect of insulation to the water in water tank, radiating effect reduces greatly.
Accompanying drawing explanation
Fig. 1 is novel glass hot pipe type vacuum heat collection pipe structural representation;
Fig. 2 is the glass thermal-pipe type vacuum heat-collecting pipe structural representation of the sealing by fusing pad with straight forming;
In figure: 1 outer glass tube, 2 glass heat pipes, 201 evaporator sections, 202 condensation segments, 3 coating for selective absorption, 4 sealing by fusing pads, 5 self-centering supports, 6 heat-pipe working mediums, 7 getters.
Fig. 3 is the solar water heater side view adopting novel glass hot pipe type vacuum heat collection pipe.
In figure: 8 novel glass hot pipe type vacuum heat collection pipes, 9 water tanks, 10 supports.
Detailed description of the invention
Core of the present utility model is for providing a kind of novel glass hot pipe type vacuum heat collection pipe 8 (hereinafter referred to as thermal-collecting tube), below in conjunction with accompanying drawing, the utility model is described further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after reading the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model all falls within the claim limited range of the application.
A kind of embodiment of the present utility model, as shown in Figure 1, primary structure comprises vacuum glass outer tube 1 and glass heat pipe 2.Glass heat pipe 2 inside is filled with heat-transfer working medium 6, and has certain vacuum.Outer glass tube 1 length is about 1200mm, and glass heat pipe 2 length is about 1220mm.Arrange sealing by fusing pad 4 in the middle part of glass heat pipe 2, width is about 20mm.Glass heat pipe is divided into evaporator section 201 and condensation segment 202 by sealing by fusing pad 4, and evaporator section 201 length is 1000mm, and condensation segment 202 length is 200mm.Sealing by fusing pad is annular, and its internal diameter is identical with the external diameter of glass heat pipe 2, is about 44mm; External diameter is identical with the external diameter of outer glass tube 1, is about 60mm.Outer glass tube 1, glass heat pipe 2 and sealing by fusing pad 4 all adopt Pyrex 3.3.Evaporator section 201 outer wall coating coating for selective absorption 3.Evaporator section 201 supports 5 by self-centering and is placed in vacuum glass outer tube 1.Outer glass tube 1 openend connects with sealing by fusing pad 4, and the other end vacuumizes rear sealing by fusing, and keeps certain vacuum by getter 7.Getter 7 adopts evaporable barium getter.The concrete procedure of processing of thermal-collecting tube 8 is: get an one end open, one end close and the less shell of diameter as glass heat pipe 2, after evaporator section 201 and condensation segment 202 length determination sealing by fusing pad 4 position, be welded on glass heat pipe 2; Glass heat pipe 2, after drawing envelope annealing, plates coating for selective absorption 3 at evaporator section 201; Get two ends again and be opening, and the external diameter shell equal with sealing by fusing pad 4 external diameter is as outer glass tube 1.After one end is welded with sealing by fusing pad 4, interlayer between pipe is put in self-centering support 5 and getter 7, glass heat pipe 2 is fixed; The pipe assembled at high temperature is toasted exhaust, is vacuumized and sealing by fusing by outer glass tube 1 pipe tail; In glass heat pipe 2, be filled with quantitative working medium 6, under high temperature, again toast exhaust, vacuumized and sealing by fusing by glass heat pipe 2 top.
Another embodiment of the present utility model, as shown in Figure 2, be only in the shell of glass heat pipe makes with the difference of the first embodiment, directly being stretched out by tube wall forms sealing by fusing pad, does not need extra soldered.Its processing mode is identical with the first embodiment.
Fig. 3 adopts the solar water heater side view of novel glass hot pipe type vacuum heat collection pipe.Water heater is arranged in a row heat pipe 8, water tank 9 and support 10 by one and is formed.Thermal-collecting tube 8 slant setting on support, the sun altitude of locality when angle of inclination equals high noon.Thermal-collecting tube 8 evaporator section 201 exposes in the environment, accepts solar radiation, and condensation segment 202 is inserted in water tank 9.Its course of work is: solar radiation is irradiated on thermal-collecting tube 8, is absorbed by coating for selective absorption 3, and transfers heat to the working medium 6 in glass heat pipe 2 by heat conduction.Working medium 6, by thermal evaporation, flow to condensation segment 202 rapidly under the effect of small pressure reduction.Condensation segment 202 is inserted in water tank 9, and wall surface temperature is lower.Gaseous working medium contacts with heat pipe inner wall, meets condensation knot, flows back to heat pipe evaporator section 201 under gravity, thus complete a circulation.The solar energy of such absorption is just sent in water tank continuously, obtains safe and reliable hot water.
Claims (6)
1. a novel glass hot pipe type vacuum heat collection pipe, primary structure comprises outer glass tube and glass heat pipe; Glass heat pipe is divided into three sections: evaporator section, condensation segment and welding section; Evaporator section outer surface is coated with coating for selective absorption, and inside is filled with heat-transfer working medium, is supported and is placed in outer glass tube, and form vacuum interlayer with outer tube by self-centering; Vacuum interlayer inside arranges getter; Welding section is arranged sealing by fusing pad, connect outer glass tube and heat pipe; Outer glass tube one end open is closed by sealing by fusing pad, and the other end vacuumizes rear sealing by fusing.
2. novel glass hot pipe type vacuum heat collection pipe according to claim 1, is characterized in that: outer glass tube, glass heat pipe and sealing by fusing pad all adopt commaterial.
3. novel glass hot pipe type vacuum heat collection pipe according to claim 1, is characterized in that: sealing by fusing pad can be welded on glass heat pipe, also can be the formation pad that stretched out by glass heat pipe tube wall when firing.
4. novel glass hot pipe type vacuum heat collection pipe according to claim 1, is characterized in that: sealing by fusing pad internal diameter is identical with glass heat pipe external diameter, and external diameter is identical with outer glass tube external diameter.
5. novel glass hot pipe type vacuum heat collection pipe according to claim 1, is characterized in that: the ratio of evaporator section, condensation segment, welding section is 50: 10: 1.
6. novel glass hot pipe type vacuum heat collection pipe according to claim 1, is characterized in that: heat-pipe working medium employing water, alcohol etc. is pollution-free, low boiling working fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294925.1U CN204705056U (en) | 2015-05-06 | 2015-05-06 | A kind of novel glass hot pipe type vacuum heat collection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294925.1U CN204705056U (en) | 2015-05-06 | 2015-05-06 | A kind of novel glass hot pipe type vacuum heat collection pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204705056U true CN204705056U (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520294925.1U Expired - Fee Related CN204705056U (en) | 2015-05-06 | 2015-05-06 | A kind of novel glass hot pipe type vacuum heat collection pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204705056U (en) |
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2015
- 2015-05-06 CN CN201520294925.1U patent/CN204705056U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20160506 |