CN109612127B - Cylindrical solar heat absorber of metal glass vacuum solar heat collecting tube - Google Patents
Cylindrical solar heat absorber of metal glass vacuum solar heat collecting tube Download PDFInfo
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- CN109612127B CN109612127B CN201811404311.9A CN201811404311A CN109612127B CN 109612127 B CN109612127 B CN 109612127B CN 201811404311 A CN201811404311 A CN 201811404311A CN 109612127 B CN109612127 B CN 109612127B
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- metal
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- welded
- prefabricated
- pipe
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 98
- 239000002184 metal Substances 0.000 title claims abstract description 98
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 15
- 239000011521 glass Substances 0.000 title claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 239000006059 cover glass Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Images
Classifications
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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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- Laminated Bodies (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A cylindrical solar heat absorber of a metal glass evacuated solar collector tube comprises a metal cylinder body and a U-shaped metal tube welded on the surface of the metal cylinder body, wherein a prefabricated U-shaped metal tube is welded on one side of a planar metal heat absorbing plate, and the distance between two straight tubes of the prefabricated U-shaped metal tube is the semi-circumference of the metal cylinder body; then rolling the plane metal heat absorbing plate and the welded prefabricated U-shaped metal pipe into a metal cylinder, and synchronously bending the U-shaped bent end of the prefabricated U-shaped metal pipe into a semicircle along with the plane metal heat absorbing plate. The invention has the advantages that: the solar selective coating aluminum sheet or copper sheet produced in large scale can be directly used, and the inefficient process that the heat absorbing bodies are coated one by one is omitted. Meanwhile, the welding process of the connecting ends of the two straight pipes and the U-shaped bent pipe is omitted. The prefabricated U-shaped pipe can be welded on the metal heat absorption flat plate by an ultrasonic flat plate seam welder or welded by laser, and the metal heat absorption flat plate and the U-shaped metal pipe are rolled into a cylinder shape at one time, so that the production process is greatly simplified, and the cost is reduced.
Description
Technical Field
The invention relates to a cylindrical solar heat absorber of a metal glass vacuum solar heat collecting tube and a manufacturing method thereof, belonging to the field of solar heat utilization.
Background
When the metal glass vacuum solar heat collecting tube adopts a metal cylindrical heat absorbing body, a U-shaped metal tube needs to be welded on the heat absorbing body, the cylindrical metal heat absorbing body is more common, solar heat absorbed by the heat absorbing body is conducted and transferred to the U-shaped tube, and the heat transfer working medium conveys heat out of the heat collecting tube. The two straight tubes 201, which are shown in fig. 1 in the form of U-shaped tubes, are welded to the outside of a cylinder 202 or two half-cylinders, respectively, and then welded to a cylinder 204 with a U-bend 203, which is spaced from the cylinder diameter, respectively. Because both the copper tube and the metal cylinder are in circular shapes, specific equipment is needed for positioning and fixing, the manufacturing process is complex, and selective films are needed to be plated on the surfaces of the copper tube and the metal cylinder, so that a new technology needs to be invented and improved.
Disclosure of Invention
The invention aims to provide a cylindrical solar heat absorber of a metal glass vacuum solar heat collecting tube, which solves the problem of complex manufacturing process in the prior art.
The technical scheme of the invention is as follows: a cylindrical solar heat absorber of a metal glass evacuated solar collector tube comprises a metal cylinder body and a U-shaped metal tube welded on the surface of the metal cylinder body, and is characterized in that a prefabricated U-shaped metal tube is welded on one side of a planar metal heat absorbing plate, and the distance between two straight tubes of the prefabricated U-shaped tube is half the circumference of the metal cylinder body; then rolling the plane metal heat absorbing plate and the welded prefabricated U-shaped metal pipe into the metal cylinder, and synchronously bending the U-shaped bent end of the prefabricated U-shaped metal pipe into a semicircle with the section equivalent to that of the metal cylinder along with the plane metal heat absorbing plate.
The plane metal heat absorbing plate comprises an aluminum plate with the thickness of 0.3-0.5mmm or a copper plate with the thickness of 0.1-0.2 mm; the width of the plane metal heat absorbing plate is the circumference; the U-shaped metal pipe is a copper pipe or an aluminum pipe, and the outer diameter is 8-12 mm.
The frontal section of the metal cylinder body is round or polygonal, and the number of edges of the polygonal cylinder body is 6-12.
The U-shaped metal tube is welded on the inner surface of the metal cylinder, and a solar selective coating is plated on the opposite side of the planar metal heat absorbing plate welded with the U-shaped metal tube.
The invention has the advantages that: the solar selective coating aluminum sheet or copper sheet produced in large scale can be directly used, and the inefficient process that the heat absorbing bodies are coated one by one is omitted. Meanwhile, the welding process of the connecting ends of the two straight pipes and the U-shaped bent pipe is omitted. The prefabricated U-shaped pipe can be welded on the metal heat absorption flat plate by an ultrasonic flat plate seam welder or welded by laser, and the metal heat absorption flat plate and the U-shaped metal pipe are rolled into a cylinder shape at one time, so that the production process is greatly simplified, and the cost is reduced.
Drawings
FIG. 1 is a schematic view of a prior art structure (section A-A of FIG. 2);
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural view (cross-sectional view B-B of fig. 4) of a cylindrical metal solar heat absorber of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic structural view of a hexagonal-cylindrical metallic solar heat absorber of the present invention (cross-sectional view C-C of FIG. 6);
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a schematic view of one side of the semi-finished product after the first step of the manufacturing process of the present invention;
FIG. 8 is a left side view of FIG. 7;
fig. 9 is a schematic view of a second step of the manufacturing process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3-6, the cylindrical solar heat absorber of the metal glass evacuated solar collector tube of the invention comprises a metal cylinder 202 and a U-shaped metal tube welded on the surface of the metal cylinder, wherein a U-shaped bent tube end 203 of the U-shaped metal tube extends out of one end of the metal cylinder 202, is not in contact with the metal cylinder 202, and is bent along a half circumference of the metal cylinder 202. The most common cross-sectional shape of the metal cylinder 202 is circular (shown in fig. 3 and 4) or polygonal (shown in fig. 5 and 6), and a solar selective absorption film (not shown) is plated on the outer circumferential surface of the metal cylinder 202.
The manufacturing method of the cylindrical solar heat absorber comprises the following steps: firstly, ultrasonically roll-welding a straight pipe section 201a (welded on the side without the solar selective coating) of a prefabricated U-shaped metal pipe on a planar metal heat absorbing plate 202a which is pre-coated with the solar selective coating, wherein the distance between the two straight pipe sections 201a of the prefabricated U-shaped metal pipe is the half circumference of the metal cylinder 202 (see fig. 7 and 8); the flat metal absorber plate 202a with the welded prefabricated U-shaped metal tube is then rolled into a cylindrical metal cylinder 202, where the U-shaped bent end 203a is radially bent into a semi-circular arc 203 (see fig. 9) with the flat metal absorber plate 202a when the metal cylinder is rolled.
The planar metal heat absorbing plate 202a can be an aluminum plate with the thickness of 0.3-0.5 mmm; or a copper plate with the thickness of 0.1-0.2 mm; the width is the circumference of the metal cylinder 202.
The U-shaped metal tube can be a copper tube or an aluminum tube, and the diameter of the U-shaped metal tube is 8-12 mm.
The invention is used as a main component of a metal glass vacuum solar heat collecting pipe, is inserted into a cover glass pipe of the metal glass vacuum solar heat collecting pipe when in application, and is manufactured into the metal glass vacuum solar heat collecting pipe.
Claims (3)
1. A cylindrical solar heat absorber of a metal glass evacuated solar collector tube comprises a metal cylinder body and a U-shaped metal tube welded on the surface of the metal cylinder body, and is characterized in that a prefabricated U-shaped metal tube is welded on one side of a planar metal heat absorbing plate, and the distance between two straight tubes of the prefabricated U-shaped metal tube is half the circumference of the metal cylinder body; then rolling the plane metal heat absorbing plate and the welded prefabricated U-shaped metal pipe into the metal cylinder, and synchronously bending the U-shaped bent end of the prefabricated U-shaped metal pipe into a semicircle with the section equivalent to that of the metal cylinder along with the plane metal heat absorbing plate.
2. The cylindrical solar heat absorber of a metal-glass evacuated solar collector tube as claimed in claim 1, wherein the planar metal heat absorbing plate is an aluminum plate with a thickness of 0.3-0.5mm, or a copper plate with a thickness of 0.1-0.2 mm; the width of the plane metal heat absorbing plate is the perimeter of the metal cylinder; the U-shaped metal pipe is a copper pipe or an aluminum pipe, and the outer diameter is 8-12 mm.
3. The cylindrical solar heat absorber of a metal-glass evacuated solar collector tube as claimed in claim 1, wherein the U-shaped metal tube is welded to the inner surface of the metal cylinder, and the outer circumference of the metal cylinder is coated with a solar selective coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811404311.9A CN109612127B (en) | 2018-11-23 | 2018-11-23 | Cylindrical solar heat absorber of metal glass vacuum solar heat collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811404311.9A CN109612127B (en) | 2018-11-23 | 2018-11-23 | Cylindrical solar heat absorber of metal glass vacuum solar heat collecting tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109612127A CN109612127A (en) | 2019-04-12 |
| CN109612127B true CN109612127B (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811404311.9A Active CN109612127B (en) | 2018-11-23 | 2018-11-23 | Cylindrical solar heat absorber of metal glass vacuum solar heat collecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109612127B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56110838A (en) * | 1980-02-01 | 1981-09-02 | Nippon Electric Glass Co Ltd | Solar heat collection pipe |
| US4377155A (en) * | 1978-06-13 | 1983-03-22 | Sharp Kabushiki Kaisha | Solar energy collector assembly |
| CN1804504A (en) * | 2005-01-10 | 2006-07-19 | 潘戈 | Solar energy vacuum heat collection tube with clinging type metal wings |
| CN101392965A (en) * | 2008-10-17 | 2009-03-25 | 清华大学 | Medium temperature glass-metal structure solar vacuum thermal-collecting tube |
| CN202229436U (en) * | 2011-09-08 | 2012-05-23 | 山东禄禧新能源科技有限公司 | Optically focused type double heat pipe solar heat collector |
| CN205048751U (en) * | 2015-08-04 | 2016-02-24 | 陈伟 | Circular heat receiver glassy metal solar energy collection pipe |
-
2018
- 2018-11-23 CN CN201811404311.9A patent/CN109612127B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377155A (en) * | 1978-06-13 | 1983-03-22 | Sharp Kabushiki Kaisha | Solar energy collector assembly |
| JPS56110838A (en) * | 1980-02-01 | 1981-09-02 | Nippon Electric Glass Co Ltd | Solar heat collection pipe |
| CN1804504A (en) * | 2005-01-10 | 2006-07-19 | 潘戈 | Solar energy vacuum heat collection tube with clinging type metal wings |
| CN101392965A (en) * | 2008-10-17 | 2009-03-25 | 清华大学 | Medium temperature glass-metal structure solar vacuum thermal-collecting tube |
| CN202229436U (en) * | 2011-09-08 | 2012-05-23 | 山东禄禧新能源科技有限公司 | Optically focused type double heat pipe solar heat collector |
| CN205048751U (en) * | 2015-08-04 | 2016-02-24 | 陈伟 | Circular heat receiver glassy metal solar energy collection pipe |
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| Publication number | Publication date |
|---|---|
| CN109612127A (en) | 2019-04-12 |
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Effective date of registration: 20231214 Address after: Room 706-13, Building H2, Changyuandao International Enterprise Community, Wuqing Development Zone, Wuqing District, Tianjin City, 301700 (centralized office area) Patentee after: Tianjin Winston New Energy Co.,Ltd. Address before: 1-1305, No. 3 Huayuan Road, Haidian District, Beijing, 100191 Patentee before: Jiang Lun Patentee before: Jiang Xinian |
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| TR01 | Transfer of patent right |