CN106196646A - 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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- CN106196646A CN106196646A CN201510235590.0A CN201510235590A CN106196646A CN 106196646 A CN106196646 A CN 106196646A CN 201510235590 A CN201510235590 A CN 201510235590A CN 106196646 A CN106196646 A CN 106196646A
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- glass
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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
- Y02E10/44—Heat exchange systems
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Abstract
A kind of glass thermal-pipe type vacuum heat-collecting pipe, primary structure includes 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.Sealing by fusing pad it is welded with on welding section.Outer glass tube opening couples with sealing by fusing pad, sealing by fusing after other end evacuation, and keeps vacuum by getter.The present invention achieves outer tube by sealing by fusing pad and separates welding with heat pipe, eliminates second heat stress, and service life is long；Use all-glass construction can reduce cost, Simplified flowsheet.
Description
Technical field
The present invention relates to a kind of novel glass hot pipe type vacuum heat collection pipe, belong to solar energy heat utilization field.
Background technology
Vacuum heat collection pipe as the core parts of solar water heater, be improve heat-tube apparatus solar collecting performance and product competing
Strive the key of power.Through the development of recent decades, vacuum heat collection pipe structurally occurs in that many innovations, performance
Also improve constantly, but still there is many shortcomings.
Traditional vacuum heat collection pipe uses the structure of evacuation between double glazing.Inner glass tube outer surface plating selectivity
Absorber coatings is to improve solar radiative absorption rate.Interior outer glass pipe is coaxial and one end is closed, and the other end is by directly
Scorification couples.This thermal-collecting tube is owing to leaking water in pipe, and device of working medium directly absorbs heat by the heat conduction of inner tubal wall,
Inefficient.After using over a long time, inner tube fouling also can be substantially reduced heat transfer property.The most also can be because not having
Having the upper factor such as water or non-emptying at night in winter to cause booster, it is unnecessary to bring to user and distributor
Loss.
In view of the shortcoming leaked water in pipe, it is proposed that the vacuum heat collection pipe do not leaked water in pipe, with hot pipe type vacuum collection
Heat pipe is representative.Heat pipe is a kind of efficient heat conducting element, utilizes twice phase transformation transmission heat of working media.
Heat pipe is combined with vacuum heat collection pipe developed hot pipe type vacuum heat collection pipe there is heat transfer efficiency height, anti-freezing property
The advantage such as good.A kind of metal fever tube type vacuum heat-collecting tube as disclosed in the patent No. 200610098390.6, by metal
Heat pipe inserts and seals welding in metal flange.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, but the problem that still there is processing more difficulty.By
Different from the expansion rate of glass in metal, life-time service easily produces gap, it is impossible to ensure vacuum at sealing by fusing,
Reduce thermal-collecting tube efficiency.Belonging to metal material together and add manufacturing cost, price does not possess competitiveness.Another kind of heat
Tube type vacuum heat-collecting tube uses full glass heat pipe type structure, the one as disclosed in the patent No. 201210014689.4
Heat pipe type full-glass vacuum solar collector pipe.Its thinking is to utilize glass heat pipe to replace metal heat pipe.Processing technology
On vacuum glass tubing extended at ring seal rim of a cup the condensation segment forming glass heat pipe, so outside coaxial and equal diameter
Backward inner tube is injected working medium evacuation again.It is disadvantageous in that due to the existence of thermal stress at ring seal, in reality
It is easily broken during use；Owing to welding heat pipe condenser section, high temperature again after outer wall of inner tube coating coating for selective absorption
The coating that can make seam volatilizees, and affects Heat-collecting effect.
Summary of the invention
For the drawbacks described above of prior art, the present invention proposes a kind of novel glass heat-pipe vacuum heat collecting pipe, weakens
Thermal stress at heat pipe and glass bushing sealing by fusing, improves thermal-collecting tube safety and service life.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of novel glass hot pipe type vacuum heat collection pipe 8, primary structure includes 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.Glass heat pipe 2
Middle part arranges sealing by fusing pad 4.Sealing by fusing pad 4 uses the material identical with outer glass tube 1 and glass heat pipe 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 root
According to the length ratio that average annual irradiance is different with output Demand Design.Evaporator section 201 outer wall coating selective absorbing is coated with
Layer 3.Evaporator section 201 supports 5 by self-centering and is placed in vacuum glass outer tube 1.Outer glass tube 1 opening
Couple with sealing by fusing pad 4, sealing by fusing after other end evacuation, and keep certain vacuum by getter 7.
Concrete procedure of processing is:
(1) take an one end open, the shell that one end is closed and diameter is less as glass heat pipe 2, according to
After evaporator section 201 and condensation segment 202 length determine sealing by fusing pad 4 position, sealing by fusing pad 4 is welded on glass
On heat pipe；
(2) by glass heat pipe 2 together with the sealing by fusing pad 4 welded through draw envelope annealing after, plate at evaporator section 201
Upper coating for selective absorption 3；
(3) take two ends and be opening, and the external diameter shell equal with sealing by fusing pad 4 external diameter is as glass
Outer 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 made to fix；
(4) pipe assembled at high temperature is toasted aerofluxus, by outer glass tube 1 pipe tail evacuation sealing by fusing；
(5) in glass heat pipe 2, it is filled with quantitative working medium 6, again toasts aerofluxus under high temperature, by glass heat pipe 2
Top evacuation sealing by fusing.
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 more traditional processing technology, due to the use of sealing by fusing pad, it is to avoid during inner and outer pipes sealing by fusing because of
High temperature and make the plated film coating of seam volatilize, Heat-collecting effect is more preferable.
(3) overall employing all-glass construction, low cost of manufacture.
(4) heat pipe uses phase-change heat-exchange, and its heat-transfer capability is big, and efficiency is high.
(5) heat pipe has auto-startup characteristic.When temperature is relatively low, working medium maintains liquid, and in pipe, vacuum is higher,
Water in water tank can be formed the effect of insulation, and radiating effect is substantially reduced.
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 getteies.
Fig. 3 is the solar water heater side view using 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
The core of the present invention is a kind of novel glass hot pipe type vacuum heat collection pipe 8 (hereinafter referred to as thermal-collecting tube) of offer,
The present invention will be further described below in conjunction with the accompanying drawings, it should be understood that these embodiments be merely to illustrate the present invention and
It is not used in restriction the scope of the present invention, after reading this disclosure, each to the present invention of those skilled in the art
The amendment planting the equivalent form of value all falls within claims hereof limited range.
A kind of embodiment of the present invention, as it is shown in figure 1, primary structure includes vacuum glass outer tube 1 and glass
Heat pipe 2.Glass heat pipe 2 is internal is filled with heat-transfer working medium 6, and has certain vacuum.Outer glass tube 1 length
Being about 1200mm, glass heat pipe 2 length is about 1220mm.Sealing by fusing pad 4 is set 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, evaporator section by sealing by fusing pad 4
201 a length of 1000mm, a length of 200mm of condensation segment 202.Sealing by fusing pad is annular, its internal diameter and glass
The external diameter of glass heat pipe 2 is identical, about 44mm；External diameter is identical with the external diameter of outer glass tube 1, about 60mm.
Outer glass tube 1, glass heat pipe 2 and sealing by fusing pad 4 all use Pyrex 3.3.Evaporator section 201 outer wall applies
Coating for selective absorption 3.Evaporator section 201 supports 5 by self-centering and is placed in vacuum glass outer tube 1.Glass
Outer tube 1 opening couples with sealing by fusing pad 4, sealing by fusing after other end evacuation, and keeps one by getter 7
Fixed vacuum.Getter 7 uses evaporable barium getter.The concrete procedure of processing of thermal-collecting tube 8 is: take one
One end open, one end is closed and the less shell of diameter is as glass heat pipe 2, according to evaporator section 201 and cold
After solidifying section 202 length determines sealing by fusing pad 4 position, it is welded on glass heat pipe 2；Glass heat pipe 2 warp
Cross after drawing envelope annealing, plate coating for selective absorption 3 at evaporator section 201；Take 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, makes glass heat pipe 2 fix；The pipe that will assemble
At high temperature toast aerofluxus, by outer glass tube 1 pipe tail evacuation sealing by fusing；It is fixed to be filled with in glass heat pipe 2
Amount working medium 6, toasts aerofluxus, again by glass heat pipe 2 top evacuation sealing by fusing under high temperature.
Another embodiment of the present invention, as in figure 2 it is shown, only exist with the difference of the first embodiment
In the shell at glass heat pipe makes, directly stretched out by tube wall and form sealing by fusing pad, it is not necessary to be extra
Welding.Its processing mode is identical with the first embodiment.
Fig. 3 uses the solar water heater side view of novel glass hot pipe type vacuum heat collection pipe.Water heater is by a row
Thermal-collecting tube 8, water tank 9 and support 10 form.Thermal-collecting tube 8 slant setting is on support, and angle of inclination is equal to just
The sun altitude that the period of the day from 11 a.m. to 1 p.m is local.Thermal-collecting tube 8 evaporator section 201 exposes in the environment, accepts solar radiation, cold
Solidifying section 202 is inserted in water tank 9.Its work process is: solar radiation is irradiated on thermal-collecting tube 8, is chosen
Property absorber coatings 3 absorbs, and is transferred heat to the working medium 6 in glass heat pipe 2 by heat conduction.Working medium 6 is heated
Evaporation, flow to rapidly condensation segment 202 under the effect of small pressure reduction.Condensation segment 202 is inserted in water tank 9, wall
Surface temperature is relatively low.Gaseous working medium contacts with heat pipe inner wall, meets condensation knot, flows back to heat pipe evaporation under gravity
Section 201, thus complete a circulation.The solar energy so absorbed just is 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 includes outer glass tube and glass heat pipe；Glass heat pipe divides
It it is 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 by self-centering and is placed in outer glass tube, and form vacuum interlayer with outer tube；Vacuum interlayer
Inside arranges getter；Sealing by fusing pad is set on welding section, couples outer glass tube and heat pipe；Outer glass tube one end is opened
Mouth is closed by sealing by fusing pad, sealing by fusing after other end evacuation.
Novel glass hot pipe type vacuum heat collection pipe the most according to claim 1, is characterized in that: outer glass tube, glass heat
Pipe and sealing by fusing pad all use commaterial.
Novel glass hot pipe type vacuum heat collection pipe the most according to claim 1, is characterized in that: sealing by fusing pad can weld
On glass heat pipe, it is also possible to be the formation pad that glass heat pipe tube wall stretched out when firing.
Novel glass hot pipe type vacuum heat collection pipe the most according to claim 1, is characterized in that: sealing by fusing pad internal diameter and glass
Glass heat pipe external diameter is identical, and external diameter is identical with outer glass tube external diameter.
Novel glass hot pipe type vacuum heat collection pipe the most according to claim 1, is characterized in that: evaporator section, condensation segment,
The ratio of welding section is 50: 10: 1.
Novel glass hot pipe type vacuum heat collection pipe the most according to claim 1, is characterized in that: heat-pipe working medium employing water,
Ethanol etc. are pollution-free, low boiling working fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510235590.0A CN106196646A (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 |
|---|---|---|---|
| CN201510235590.0A CN106196646A (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 |
|---|---|
| CN106196646A true CN106196646A (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510235590.0A Pending CN106196646A (en) | 2015-05-06 | 2015-05-06 | A kind of novel glass hot pipe type vacuum heat collection pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839464A (en) * | 2017-03-31 | 2017-06-13 | 东南大学 | A kind of all-glass thermal-pipe type vacuum heat-collecting pipe with reflux |
| CN111306811A (en) * | 2020-02-26 | 2020-06-19 | 东南大学 | All-glass heat pipe type vacuum heat collecting pipe with CPC condenser |
| CN113494861A (en) * | 2020-04-01 | 2021-10-12 | 株洲中车奇宏散热技术有限公司 | Heat pipe with composite structure and method for increasing temperature difference of heat pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474170A (en) * | 1981-08-06 | 1984-10-02 | The United States Of America As Represented By The United States Department Of Energy | Glass heat pipe evacuated tube solar collector |
| CN1121577A (en) * | 1994-10-24 | 1996-05-01 | 黄丽平 | All-glass thermal-pipe type vacuum heat-collecting pipe |
| CN202747673U (en) * | 2012-08-16 | 2013-02-20 | 北京清华阳光能源开发有限责任公司 | Metal condensation end glass heat pipe type solar heat-collection pipe |
-
2015
- 2015-05-06 CN CN201510235590.0A patent/CN106196646A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474170A (en) * | 1981-08-06 | 1984-10-02 | The United States Of America As Represented By The United States Department Of Energy | Glass heat pipe evacuated tube solar collector |
| CN1121577A (en) * | 1994-10-24 | 1996-05-01 | 黄丽平 | All-glass thermal-pipe type vacuum heat-collecting pipe |
| CN202747673U (en) * | 2012-08-16 | 2013-02-20 | 北京清华阳光能源开发有限责任公司 | Metal condensation end glass heat pipe type solar heat-collection pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839464A (en) * | 2017-03-31 | 2017-06-13 | 东南大学 | A kind of all-glass thermal-pipe type vacuum heat-collecting pipe with reflux |
| CN111306811A (en) * | 2020-02-26 | 2020-06-19 | 东南大学 | All-glass heat pipe type vacuum heat collecting pipe with CPC condenser |
| CN113494861A (en) * | 2020-04-01 | 2021-10-12 | 株洲中车奇宏散热技术有限公司 | Heat pipe with composite structure and method for increasing temperature difference of heat pipe |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |