CN210425588U - Novel solar heat collection device - Google Patents

Novel solar heat collection device Download PDF

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Publication number
CN210425588U
CN210425588U CN201920792137.3U CN201920792137U CN210425588U CN 210425588 U CN210425588 U CN 210425588U CN 201920792137 U CN201920792137 U CN 201920792137U CN 210425588 U CN210425588 U CN 210425588U
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glass tube
inner glass
novel solar
heat
metal
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CN201920792137.3U
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周园园
娄滨
谢维思
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Xie Weisi
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Guangzhou Juneng Solar Energy Technology Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

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Abstract

Disclosed in this application is a novel solar collector device, comprising: the device comprises an inner glass tube, an outer glass tube, a metal condenser head and a light absorption coating; the inner glass tube and the outer glass tube are both of a structure with one end sealed and the other end opened; the open ends of the inner glass tube and the outer glass tube are connected with the metal condenser head through hot-pressing seal or fusion seal; the inner glass tube is vacuumized and is provided with a heat transfer working medium; the light absorption coating is coated on the outer wall of the inner glass tube; vacuumizing the space between the outer glass tube and the inner glass tube; the technical problem that the existing solar heat transmission device is high in cost and low in heat collection efficiency is solved.

Description

Novel solar heat collection device
Technical Field
The application relates to the technical field of solar heat collection, in particular to a novel solar heat collection device.
Background
At present, solar energy is widely used as a clean energy source, and the conversion of solar energy into heat energy becomes a popular research direction.
The heat pipe technology is a widely applied heat transfer technology, and is a technology for rapidly conducting heat by utilizing the phase change process of medium evaporation at a hot end and then condensation at a cold end, namely by utilizing the latent heat of evaporation and the latent heat of condensation of liquid. When the evaporation end of the heat pipe is heated, the liquid in the capillary tube is quickly vaporized, vapor flows to the condensation end under the power of thermal diffusion, heat is released at the condensation end, and the liquid flows back to the evaporation end along the porous material under the action of capillary, so that the circulation is performed, and the temperatures of the two ends of the heat pipe are guided to be equal.
In a heat pipe used in a conventional heat transport device, a heat absorbing body is made of metal, generally made of copper, and although the heat pipe has high heat collecting efficiency, the heat pipe has high cost. In view of cost reduction, an all-glass heat pipe is provided, for example, patent publication No. CN1121577A discloses an all-glass heat pipe type vacuum heat collector which is suitable for use in the fields of providing hot water, boiling water, heating, drying, solar houses, air conditioning, refrigeration, ice making, water pumping, power generation, seawater desalination and the like by using solar energy as an energy source, and can be used as an all-weather collection solar heat collection component. However, the condensing end of the all-glass heat pipe is made of glass, so that the heat collecting efficiency is low and the heat collecting temperature is low, and therefore, the heat pipe is not an ideal heat transmission device.
SUMMERY OF THE UTILITY MODEL
The application provides a novel solar heat collection device for solve the technical problem that the existing solar heat transmission device is high in cost and low in heat collection efficiency.
In view of this, the present application provides a novel solar heat collection device, comprising: the device comprises an inner glass tube, an outer glass tube, a metal condenser head and a light absorption coating;
the inner glass tube and the outer glass tube are both of a structure with one end sealed and the other end opened;
the open ends of the inner glass tube and the outer glass tube are connected with the metal condenser head in a hot-pressing sealing or fusion sealing manner;
the inner glass tube is internally vacuumized and is provided with a heat transfer working medium;
the light absorption coating is coated on the outer wall of the inner glass tube;
and vacuumizing is performed between the outer glass tube and the inner glass tube.
Preferably, an expansion joint is arranged at the sealing position of the metal condenser head.
Preferably, the open ends of the inner glass tube and the outer glass tube are both in a conical structure.
Preferably, the metal condensation head is made of copper.
Preferably, the heat transfer working medium is alcohol.
Preferably, the number of the expansion joints is not less than 2.
Preferably, the method further comprises the following steps: a CPC light-gathering device;
the heat collector composed of the inner glass tube, the outer glass tube, the metal condenser head and the light absorption coating is arranged in an effective light gathering area of the CPC light gathering device.
Preferably, the method further comprises the following steps: an elastic fixing sheet;
the elastic fixing piece is arranged between the inner glass tube and the outer glass tube and used for fixing the inner glass tube.
Preferably, the elastic fixing piece is a corrugated wire.
Preferably, the elastic fixing piece is installed at a bottom evacuation position and a middle upper evacuation position of the outer glass tube and the inner glass tube.
According to the technical scheme, the method has the following advantages:
the utility model provides a novel solar heat collection device, includes: the device comprises an inner glass tube, an outer glass tube, a metal condenser head and a light absorption coating; the inner glass tube and the outer glass tube are both of a structure with one end sealed and the other end opened; the open ends of the inner glass tube and the outer glass tube are connected with the metal condenser head through hot-pressing seal or fusion seal; the inner glass tube is vacuumized and is provided with a heat transfer working medium; the light absorption coating is coated on the outer wall of the inner glass tube; and vacuumizing is performed between the outer glass tube and the inner glass tube. The solar heat transmission device provided by the application adopts the mode that the inner glass tube and the outer glass tube are sealed with the metal condenser head by melting, the inner glass tube is taken as the evaporation end, the mode that the evaporation end and the condensation end are integrated into a whole and are copper tubes is not used any more, the copper tube material with higher cost is reduced, the production cost is reduced, the metal condenser head is used for heat transmission, the problem of low heat conduction efficiency caused by adopting the full glass tube for heat transmission is solved, simultaneously, the inner part of the glass tube is vacuumized and is provided with a heat transmission working medium, the outer wall of the glass tube is coated with a light absorption coating for solar heat collection, while the outer glass tube protects the inner glass tube, the inner glass tube and the inner glass tube are vacuumized, so that heat can be prevented from directly dissipating outwards, the heat collection effect is good, and the technical problem that the existing solar heat transmission device is high in cost and low in heat collection efficiency is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a solar heat transfer device provided in an embodiment of the present application;
fig. 2 is a top view of the solar thermal transfer apparatus of fig. 1;
fig. 3 is another schematic structural diagram of a solar heat transfer apparatus provided in an embodiment of the present application;
wherein the reference numerals are:
1. a metal condenser head; 2. an expansion joint; 3. an inner glass tube; 4. a heat transfer working medium; 5. a light absorbing coating; 6. an outer glass tube; 7. a heat collector; 8. a CPC light-gathering device; 9. an elastic fixing sheet.
Detailed Description
The embodiment of the application provides a novel solar heat collecting device, which is used for solving the technical problem that the existing solar heat transmission device is high in cost and low in heat collecting efficiency.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 3, the present application provides an embodiment of a novel solar heat collecting device, which includes: the device comprises an inner glass tube, an outer glass tube, a metal condenser head and a light absorption coating;
the inner glass tube and the outer glass tube are both of a structure with one end sealed and the other end opened;
the open ends of the inner glass tube and the outer glass tube are connected with a metal condenser head in a sealing manner;
the inner glass tube is vacuumized and is provided with a heat transfer working medium;
the light absorption coating is coated on the outer wall of the inner glass tube;
and vacuumizing is performed between the outer glass tube and the inner glass tube.
It should be noted that, in the novel solar heat collection device in the embodiment of the present application, the evaporation end is an inner glass tube 3 with an opening at one end and a sealed end, the condensation end is a metal condensation head 1, a light absorption coating 5 is coated on the outer wall of the inner glass tube 3, the light absorption coating 5 absorbs sunlight onto the inner glass tube 3, the inside of the inner glass tube 3 is vacuumized and contains a heat transfer working medium 4, the heat transfer working medium 4 is evaporated to the condensation end after being heated, and transmits heat to the condensation end, the metal condensation head 1 at the condensation end transmits heat to a specified position to complete utilization of heat energy, the heat transfer working medium 4 at the condensation end flows back to the evaporation end after being cooled, and the heat transmission mode of the inner glass tube 3 and the metal condensation head 1 avoids the problem of high cost caused by the fact that both the evaporation end and the condensation end; the open end of the inner glass tube 3 is sealed with the metal condenser head 1 in a sealing mode, the traditional metal and glass sealing process adopts a hot-press sealing technology, the hot-press sealing technology uses metal with better plasticity as solder, the metal sealing cover and the glass tube are sealed together under the heating and pressurizing conditions, when the solder reaches more than 100 ℃, chemical reaction can occur to cause the breakage and air leakage of the sealing position of the vacuum tube glass and the metal, and the temperature of more than 100 ℃ cannot be achieved, and the sealing connection mode adopted by the metal condenser head 1 and the inner glass tube 3 in the embodiment of the application can achieve the purpose that the heat collection temperature rises to more than 100 ℃ without damaging the heat transfer device, so that the requirement that the heat collection temperature of the solar heat transfer device provided in the embodiment of the application is 50-150 ℃ can be met. The outer glass tube 6 plays a role in protecting the inner glass tube 3, and the vacuumizing treatment is performed between the outer glass tube and the inner glass tube 3, so that heat absorbed by the inner glass tube 3 can be prevented from directly dissipating outwards, and the improvement of the heat collection effect is facilitated.
The embodiment of the present application provides a novel solar heat collection device, including: the device comprises an inner glass tube 3, an outer glass tube 6, a metal condenser head 1 and a light absorption coating 5; the inner glass tube 3 and the outer glass tube 6 are both of a structure with one end sealed and the other end opened; the open ends of the inner glass tube 3 and the outer glass tube 6 are connected with the metal condenser head 1 in a sealing way; the inner glass tube 3 is internally vacuumized and is provided with a heat transfer working medium 4; the light absorption coating 5 is coated on the outer wall of the inner glass tube 3; the space between the outer glass tube 6 and the inner glass tube 3 is vacuumized. The solar heat transmission device provided by the application adopts the mode that the inner glass tube 3, the outer glass tube 6 and the metal condensation head 1 are sealed by melting to transmit solar heat, the inner glass tube 3 is taken as an evaporation end, the mode that the evaporation end and the condensation end are integrated into a whole and are copper tubes is not used any more, the copper tube material with higher cost is reduced, the production cost is reduced, the metal condensation head 1 is used for heat transmission, the problem of low heat conduction efficiency caused by adopting a full glass tube for heat transmission is solved, simultaneously, the inner part of the inner glass tube 3 is vacuumized and is provided with a heat transfer working medium 4, the outer wall of the inner glass tube 3 is coated with a light absorption coating 5 for solar heat collection, while the outer glass tube 6 protects the inner glass tube 3, the inner glass tube 3 and the inner glass tube are vacuumized, so that heat can be prevented from directly dissipating outwards, the heat collection effect is good, and the technical problem that the existing solar heat transmission device is high in cost and low in heat collection efficiency is solved.
As an improvement, the novel solar heat collecting device provided by the embodiment of the application is provided with an expansion joint 2 at the fusion sealing position of the metal condensation head 1.
It should be noted that, when the novel solar heat collection device provided in the embodiment of the present application is used in practice, when the heat collection temperature is high, the metal condensation head 1 has a bending deformation problem, if the bending deformation problem of the metal condensation head 1 cannot be solved in time, the service life of the solar heat transmission device will be affected, therefore, in order to improve the reliability of the novel solar heat collection device in the embodiment of the present application, the service life is prolonged, in the embodiment of the present application, the expansion joint 2 is provided at the sealing position of the metal condensation head 1 with the inner glass tube 3 and the outer glass tube 6, and under the effect of the expansion joint 2, the expansion joint can consume the deformation force of the condensation end due to heating when the condensation end is heated, thereby avoiding the generation of the bending deformation problem.
As an improvement, the number of the expansion joint 2 is not less than 2.
It should be noted that, in order to further ensure that the condensation end does not generate bending deformation, the number of the expansion joint 2 is set to be at least two, and it is understood that, on the basis of the embodiment of the present application, a person skilled in the art can appropriately adjust the number of the setting joints and the position of the expansion joint 2 according to the actual application.
As a modification, the open ends of the inner glass tube 3 and the outer glass tube 6 are both tapered structures.
It should be noted that, the open end of the inner glass tube 3 in the embodiment of the present application may be set to be a tapered structure, which is beneficial to heat collection of heat transferred from the evaporation end, and meanwhile, the metal condenser head 1 is conveniently connected with the inner glass tube 3 by sealing, so as to reduce the sealing area between the metal condenser head 1 and the inner glass tube 3, and the shape and structure design of the outer glass tube 6 is consistent with that of the inner glass tube 3, which is beneficial to improve the consistency, stability and aesthetic property of the whole structure.
As a modification, the metal condenser head 1 is made of copper.
It should be noted that the copper material has a high heat conductivity coefficient, and the use of copper as the metal condensation head 1 is beneficial to improving the heat collection temperature and the heat conduction efficiency.
As an improvement, the heat transfer working medium 4 is alcohol.
It should be noted that, in the embodiment of the present application, alcohol is used as a main component of the heat transfer working medium 4, so that the evaporation effect is good, and the heat transfer efficiency is high.
As an improvement, the novel solar heat collection device provided in the embodiment of the present application further includes: a CPC light-gathering device;
the heat collector composed of the inner glass tube, the outer glass tube, the metal condenser head and the light absorption coating is arranged in the effective light gathering area of the CPC light gathering device.
It should be noted that a CPC (Compound Parabolic Concentrator) is a non-imaging low focusing device, and can collect and focus light rays within a predetermined receiving angle range onto a receiving window of a receiver. As shown in fig. 2, a heat collector 7 composed of an inner glass tube 3, an outer glass tube 6, a metal condenser head 1 and a light absorption coating 5 is arranged in an effective light-collecting area of a CPC light-collecting device 8, so that solar energy can be collected to an evaporation end of the heat collector 7, and the heat-collecting temperature and the heat-collecting efficiency are improved.
As an improvement, the novel solar heat collection device provided in the embodiment of the present application further includes: an elastic fixing piece 9;
the elastic fixing piece 9 is arranged between the inner glass tube 3 and the outer glass tube 6 and used for fixing the inner glass tube 3.
As a modification, the elastic fixing piece 9 is a corrugated wire.
As a modification, the elastic fixing piece 9 is installed at the bottom evacuation position and the middle upper evacuation position of the outer glass tube 6 and the inner glass tube 3.
It should be noted that, in order to avoid the inner glass tube 3 from loosening due to its own gravity, which affects reliability and service life, an elastic fixing piece 9 is further disposed between the inner glass tube 3 and the outer glass tube 6 in the embodiment of the present application for fixing the inner glass tube 3.
To sum up, the solar heat transfer device that provides in this application embodiment, compared with prior art, has following advantage:
1) the solar heat transfer device with the metal condensation head has the advantages that the efficiency is improved compared with that of a full-glass heat pipe type vacuum pipe due to the high heat conduction efficiency of the metal condensation end;
2) the glass tube solar heat transfer device with the metal condensation head has the advantages that the evaporation end is the glass tube, the condensation end is the metal condensation head, and the problem of high cost caused by the fact that the existing evaporation end and the existing condensation end are both copper tubes is solved;
3) the glass tube solar heat transmission device with the metal condensation head adopts a fusion sealing process with the glass tube, and metal and glass are directly fused and sealed, so that the heat collection temperature is increased to more than 100 ℃ without damaging the tube;
4) the novel glass tube solar heat collecting device with the metal condensing head has heat collecting temperature capable of being widely applied to the heat supply field of 50-150 ℃;
5) the CPC light-gathering device is adopted to gather light and collect heat for the novel solar heat collecting device, so that the heat collecting temperature and the heat collecting efficiency of the novel solar heat collecting device are improved;
6) the inner glass tube is fixed by the elastic fixing piece, so that the reliability of the inner glass tube is improved, and the service life of the inner glass tube is prolonged.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A novel solar thermal collector, comprising: the device comprises an inner glass tube, an outer glass tube, a metal condenser head and a light absorption coating;
the inner glass tube and the outer glass tube are both of a structure with one end sealed and the other end opened;
the open ends of the inner glass tube and the outer glass tube are connected with the metal condenser head in a hot-pressing sealing or fusion sealing manner;
the inner glass tube is internally vacuumized and is provided with a heat transfer working medium;
the light absorption coating is coated on the outer wall of the inner glass tube;
and vacuumizing is performed between the outer glass tube and the inner glass tube.
2. The novel solar heat collection device according to claim 1, wherein an expansion joint is arranged at the fusion seal of the metal condensation head.
3. The novel solar collector device according to claim 1, wherein the open ends of the inner glass tube and the outer glass tube are both tapered structures.
4. The novel solar heat collection device according to claim 1, wherein the metal condenser head is made of copper.
5. The novel solar collector device according to claim 1, wherein said heat transfer medium is alcohol.
6. The novel solar collector according to claim 2 wherein the number of said expansion joints is not less than 2.
7. The novel solar collector device according to claim 1, further comprising: a CPC light-gathering device;
the heat collector composed of the inner glass tube, the outer glass tube, the metal condenser head and the light absorption coating is arranged in an effective light gathering area of the CPC light gathering device.
8. The novel solar collector device according to claim 1, further comprising: an elastic fixing sheet;
the elastic fixing piece is arranged between the inner glass tube and the outer glass tube and used for fixing the inner glass tube.
9. The novel solar collector assembly of claim 8 wherein said flexible stator is a corrugated wire.
10. A novel solar collector according to claim 8 or 9 wherein said elastic retention tabs are mounted at the bottom and mid-upper evacuation locations of said outer and inner glass tubes.
CN201920792137.3U 2019-05-29 2019-05-29 Novel solar heat collection device Active CN210425588U (en)

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Application Number Priority Date Filing Date Title
CN201920792137.3U CN210425588U (en) 2019-05-29 2019-05-29 Novel solar heat collection device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044078A (en) * 2019-05-29 2019-07-23 广州聚能太阳能科技有限公司 A kind of new type solar collecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044078A (en) * 2019-05-29 2019-07-23 广州聚能太阳能科技有限公司 A kind of new type solar collecting device

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Effective date of registration: 20211214

Address after: 510000 1604, building 6, Cuicheng garden, Baogang Avenue, Haizhu District, Guangzhou, Guangdong

Patentee after: Xie Weisi

Address before: 510000 building 3, No. 6, Hanxing Third Street, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province 2004

Patentee before: GUANGZHOU JUNENG SOLAR ENERGY TECHNOLOGY CO.,LTD.