CN101639295B - All-glass vacuum heat collection pipe with regular prism-shaped inner pipe and production method thereof - Google Patents
All-glass vacuum heat collection pipe with regular prism-shaped inner pipe and production method thereof Download PDFInfo
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- CN101639295B CN101639295B CN2009100910148A CN200910091014A CN101639295B CN 101639295 B CN101639295 B CN 101639295B CN 2009100910148 A CN2009100910148 A CN 2009100910148A CN 200910091014 A CN200910091014 A CN 200910091014A CN 101639295 B CN101639295 B CN 101639295B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
An all-glass vacuum heat collection pipe with a regular prism-shaped inner pipe and a production method thereof belongs to the field of solar energy utilization devices and solves the problem that the full body type special-shaped inner pipe is difficult to process and produce. The all-glass vacuum heat collection pipe comprises a basic structure of the conventional all-glass vacuum heat collection pipe, wherein, the inner pipe (2) consists of a left section (7), a middle section (8) and a right section (9) which are mutually coaxially connected to a whole, the middle section (8) comprises a regular prism-shaped structure, and the left section (7) and the right section (9) are shaped like circular pipes. The production method comprises the steps of using a special discharge mold for drawing the axial full body type regular prism-shaped blank inner pipe, then carrying out reaming and circle-expanding on two ends for forming the left section (7) and the right section (9), fixing the size, discharging, trimming edges, firing mouths, carrying out round burning and sealing on the right section (9), plating a film, splicing with an outer pipe according to the conventional method and thelike, and the production must carry out annealing treatment in time. The all-glass vacuum heat collection pipe has the advantages that the all-glass vacuum heat collection pipe maximizes the surface area of a heat absorbing body and the heat exchange area energy of a heat transfer medium, minimizes the capacity energy of the inner pipe and realizes high strength; the all-glass vacuum heat collection pipe is based on the convention equipment and technology, thereby having low investment, low cost and high finished product ratio; and the all-glass vacuum heat collection pipe is suitable for mass production.
Description
Technical field
The invention belongs to the helioplant field, relate to all-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe and preparation method thereof.
Background technology
At present, the all glass vacuum heat collection tube of solar energy that uses in the solar water heater mainly is made up of outer tube and interior pipe, and interior pipe mostly is smooth cylindrical tube, the radial section of pipe is rounded promptly, under certain size of outer tube, in view of the surface area and the water capacity size of interior pipe, and light-receiving area influences with vertical light-receiving area, its Heat-collecting effect is unsatisfactory, is not fine; Heat-collecting effect for pipe in further improving, under certain size of outer tube, make its absorber surface area maximization, the maximization of heat transfer medium heat exchange area, interior pipe volume minimizes, once occurred as CN2781287Y, the profiled inner all glass vacuum heat collection tube of solar energy that CN2442189Y and ZL2007201032946 provide, promptly the radial section of interior pipe is non-circular, has the incomparable advantage of cylindrical tube, its weak point is, interior pipe prolongs and axially is the entire body abnormity, promptly its radially noncircular cross section prolong and axially be the entire body formula, therefore produced following problem, in processing and fabricating, the bombing blanking of profiled inner is difficult to finish, and the one end burns circle sealing difficulty more, has both just finished the envelope circle, the wall unevenness of semicircle sphere, very easily damaged, and the other end of profiled inner is to be difficult to seal with the end welding assembly unit realization ring-type of outer tube equally, has both just finished ring-type to seal, the wall unevenness at sealing line position, very easily damaged, therefore be provided with effective preparation method always, also product-free appears on the market so far.
Summary of the invention
The technical problem that solves:
All-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe and preparation method thereof is provided, can overcome the deficiencies in the prior art, vacuum heat collection pipe had both had radially, and noncircular cross section prolongs the advantage that axially is pipe in the entire body formula, suitable again effectively making in enormous quantities, in its preparation method based on conventional equipment, and supporting operation and process conditions are arranged, yield rate height, production efficiency height.
The technical scheme that adopts:
All-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe, basic structure with conventional all-glass vacuum thermal-collecting tube is formed, comprise that the selectivity that applies on vacuum chamber that interior pipe, outer tube, inner and outer pipes form, the outer wall of inner tube absorbs the steel card and the getter minute surface of dress in plated film, the vacuum chamber, it is characterized in that: pipe is made of for three sections for the left, center, right of one continuously coaxial mutually in described, the stage casing is regular prism-shaped structure, and its radial section is the regular polygon cross section; With the stage casing to the right coaxial transition be that the right section of one is the tubular type structure continuously, its radial section is a circular cross-section, receives gradual change envelope circle in the right output port of this section, promptly burns the circle sealing and is semicircle sphere; With the stage casing left coaxial transition be that the left side section of one is the tubular type structure continuously, its radial section is a circular cross-section, turns over the mutual welding of formula in the left port eversion type of this section and the left port of outer tube and is assemblied into ring-type and seals.
Preparation method with all-glass vacuum thermal-collecting tube of regular prism-shaped interior pipe, comprise, pipe in making earlier, outer tube, one end of interior pipe burns circle and seals to behind the semicircle sphere, outer wall of inner tube is applied the A1-N/A1 plated film through magnetron sputtering, pipe afterwards, the outer tube assembling combination, put into steel card and getter earlier, carrying out ring-type afterwards seals, exhaust and finished products, at last, carry out the getter mirror-polishing, it is characterized in that: it is as follows in regular turn that pipe is made processing in related, at first preparation with regular prism-shaped in effective discharging mould in the drawing blank of structure and specification coupling of pipe, draw in the regular prism-shaped blank of axial entire body formula with conventional equipment and described discharging mould and to manage, its length should be complementary with the total length of the interior pipe that presets, afterwards, to the annealing in process under 400～500 ℃ of temperature in annealing furnace of pipe in the blank, eliminate stress, and it is carried out quality inspection with checkout equipment, then reaming is carried out at the two ends of pipe in the blank respectively and expanded circle with glass work lathe, hole depth 30～60mm, form left side section, right section, the left side section behind the circle is expanded in reaming, the external diameter of the circular radial section of right section equals the maximum geometry external diameters that have on the regular polygon radial section in the regular prism-shaped stage casing between left side section and right section, afterwards with the bombing machine, Qi Guanji, interior pipe behind the reaming expansion circle is carried out the scale blanking, edging, burn mouth, then the right output port of right section is burnt the circle sealing and is semicircle sphere, again after, interior pipe is carried out the annealing in process second time under 550～580 ℃ of temperature in annealing furnace, eliminate stress, at last to the outer wall of inner tube plated film; Behind the interior pipe plated film, interior pipe, outer tube assembling combination, exhaust and finished products, and last, carry out the getter mirror-polishing and all carry out according to a conventional method.
Beneficial effect:
Because the stage casing that interior pipe has regular prism-shaped structure, and mutually coaxial with respect to it is left and right section very long of one continuously, therefore, under certain size of outer tube, outer wall of inner tube photoreceiving surface area is big with vertical light-receiving area, and the absorber surface area can maximize, and the inner tube wall surface area increases, improved the heat-exchange capacity of interior pipe and heat transfer medium, the heat transfer medium heat exchange area can maximize; Thereby reduced interior pipe water capacity and reduced idle work, described vacuum heat collection pipe heat energy utilization rate improves, and has increased outer heating load, interior pipe volume energy minimization, reasonable flow channel designs, and can reduce the mixed flow of hot and cold water in the vacuum heat collection pipe, hot water up-flow speed improves, and transports smooth and easy; The existence of rib to reinforcement has been arranged, can improve the collimation of vacuum heat collection pipe as interior tubular axis, increases counter-bending, anti-folding and voltage endurance capability, can make solar water heater get technical performance indexs such as heat, average daily efficiency, thermal losses coefficient and improve comprehensively; The described suitable effectively making in enormous quantities of all-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe, its preparation method is based on conventional equipment, small investment, cost are low, easy to operate, the yield rate height, production efficiency height, good product quality, suitable fully mass industrialized production, and can promote the development of the industry effectively.
Description of drawings
Fig. 1, general structure schematic diagram;
Fig. 2, press the A-A cutaway view Amplified image shown in Fig. 1;
Fig. 3, press the B-B cutaway view Amplified image shown in Fig. 1;
Fig. 4, press the C-C cutaway view Amplified image shown in Fig. 1;
The perspective view of the discharging mould 10 of pipe 12 in Fig. 5, the blank;
The perspective view of pipe 12 in Fig. 6, the blank;
Interior pipe perspective view in Fig. 7, the blank after the blanking of pipe 12 reamings expansion circle scale;
Fig. 8, interior Guan Yiduan burn round sealing and are the perspective view behind the semicircle sphere;
The specific embodiment
Further explanation in detail in conjunction with the accompanying drawings;
Shown in Fig. 1～4, all-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe has the basic structure composition of conventional all-glass vacuum thermal-collecting tube, comprise outer tube 1, interior pipe 2, the selectivity that applies on the vacuum chamber 3 that inner and outer pipes is formed, the outer wall of inner tube absorbs the steel card 5 and the getter minute surface 6 of dress in plated film 4, the vacuum chamber; Interior pipe 2 is made of for left section 7, stage casing 8, the right section 9 of one continuously coaxial mutually, and stage casing 8 is regular prism-shaped structure, and its radial section is the regular polygon cross section, has maximum geometry outer diameter D on the described regular polygon cross section; With stage casing 8 to the right coaxial transition be that the right section 9 of one is the tubular type structure continuously, its radial section is a circular cross-section, receives gradual change envelope circle in the right output port of this section, promptly burns the circle sealing and is semicircle sphere; With stage casing 8 left coaxial transition be that the left side section 7 of one is the tubular type structure continuously, its radial section is a circular cross-section, turns over the mutual welding of formula in the left port eversion type of this section and the left port of outer tube 1 and is assemblied into ring-type and seals; The external diameter of the circular radial section of described right section 9, left side section 7 equals maximum how much outer diameter D of having on the regular polygon radial section in described stage casing 8; Described regular prism-shaped interior pipe, the regular polygon radial section in its stage casing 8 is the positive six～positive 16 petal tee sections with convex-concave camber line, or be inside and outside saw-tooth shaped cross section, in order to stage casing 8 left, coaxial transition is the left side section 7 of one, right section 9 continuously to the right, and help improving the quality of products.
Maximum how much outer diameter D that have on the regular polygon radial section in described stage casing 8 are meant that the center of gravity with described regular polygon radial section is the center of circle, cross the diameter of a circle of regular polygon radial section outermost point.
The limit of the regular polygon radial section in stage casing 8 is straight line and/or camber line on the interior pipe 2; Shown in the figure, the regular polygon radial section in stage casing 8 is the positive eight petal tee sections with convex-concave camber line shape on the interior pipe 2.
Shown in Fig. 5～8,
Preparation method with all-glass vacuum thermal-collecting tube of regular prism-shaped interior pipe, comprise the substance in the conventional preparation method, pipe, outer tube in making earlier, the sealing of interior Guan Yiduan burning circle is for behind the semicircle sphere, outer wall of inner tube is applied the A1-N/A1 plated film through magnetron sputtering, pipe, outer tube assembling combination are put into steel card, getter earlier afterwards, carry out afterwards that ring-type is sealed, exhaust and finished products, at last, the getter mirror-polishing is characterized in that: it is as follows in regular turn that pipe is made processing in related
(1) at first preparation with regular prism-shaped in effective discharging mould 10 in the drawing blank of structure and specification coupling of pipe, it is by internal layer and outer the composition, and the geomery of the radial section in the geomery of the radial section of the interlayer 11 between internal layer and the skin and the stage casing with regular prism-shaped structure 8 of described regular prism-shaped interior pipe is identical;
(2) be melt with Pyrex 3.3, with managing 12 in all-electric melting kiln, bench and the regular prism-shaped blank of the described discharging mould 10 axial entire body formulas of drawing, its length L should be coaxial mutually continuously for the total length of one is complementary with left side section 7, stage casing 8, the right section 9 of the interior pipe 2 that presets, at least than the big 40mm of length S of the all-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe that presets;
(3) to the annealing in process under 400～500 ℃ of temperature in annealing furnace of pipe 12 in the blank, be no less than 40 minutes, be as the criterion to eliminate stress, carry out quality testing afterwards, undertaken by national standard, comprise with stress ga(u)ge and detect the stress situation, and detect circularity, collimation, step, dross etc.;
(4) with glass work lathe reaming is carried out at the two ends of pipe 12 in the blank respectively and expanded circle, hole depth 30～60mm, form left side section 7, right section 9, the external diameter that the circular radial section of the left side section 7 behind the circle, right section 9 is expanded in reaming equals maximum how much outer diameter D of having on the regular polygon radial section in the regular prism-shaped stage casing 8 between left side section 7, the right section 9;
(5) the interior pipe that reaming is expanded after justifying with bombing machine, Qi Guanji carries out the scale blanking, edging, burn mouth, with positive eight petal-shaped interior pipes is example, and the yields of bombing blanking can reach 100%, expands the positive eight petal-shaped interior pipe raisings of entire body formula of bowlder more than 80% than not carrying out reaming;
(6) edging, burn mouth after, will receive gradual change envelope circle in the right output port of right section 9 with the envelope circular knitting machine, promptly burn the circle sealing and be semicircle sphere, sealing should be smooth, amplitude is even, no windrow, not step;
(7) the interior pipe behind the right section 9 envelopes circle is carried out the annealing in process second time under 550～580 ℃ of temperature in annealing furnace, be no less than 30 minutes, under stress ga(u)ge, check, be as the criterion to eliminate stress;
(8) internally manage 2 outer wall through magnetron sputtering coating A1-N/A1 plated film---promptly apply selectivity and absorb plated film;
(9) internally manage 2 plated films after, interior pipe outer tube assembling combination, exhaust and finished products, and last carry out the getter mirror-polishing and all carry out according to a conventional method, finished products under 500～580 ℃ of temperature, was annealed 40～60 minutes in annealing furnace.
Claims (2)
1. the preparation method that has the all-glass vacuum thermal-collecting tube of regular prism-shaped interior pipe, comprise, pipe in making earlier, outer tube, one end of interior pipe burns circle and seals to behind the semicircle sphere, outer wall of inner tube is applied the A1-N/A1 plated film through magnetron sputtering, pipe afterwards, the outer tube assembling combination, put into steel card and getter earlier, carrying out ring-type afterwards seals, exhaust and finished products, at last, carry out the getter mirror-polishing, it is characterized in that: it is as follows in regular turn that pipe is made processing in related, at first preparation with regular prism-shaped in effective discharging mould in the drawing blank of structure and specification coupling of pipe, draw in the regular prism-shaped blank of axial entire body formula with conventional equipment and described discharging mould and to manage, its length should be complementary with the total length of the interior pipe that presets, afterwards, to the annealing in process under 400～500 ℃ of temperature in annealing furnace of pipe in the blank, eliminate stress, and it is carried out quality inspection with checkout equipment, then reaming is carried out at the two ends of pipe in the blank respectively and expanded circle with glass work lathe, hole depth 30～60mm, form left side section, right section, the left side section behind the circle is expanded in reaming, the external diameter of the circular radial section of right section equals the maximum geometry external diameters that have on the regular polygon radial section in the regular prism-shaped stage casing between left side section and right section, afterwards with the bombing machine, Qi Guanji, interior pipe behind the reaming expansion circle is carried out the scale blanking, edging, burn mouth, then the right output port of right section is burnt the circle sealing and is semicircle sphere, again after, interior pipe is carried out the annealing in process second time under 550～580 ℃ of temperature in annealing furnace, eliminate stress, at last to the outer wall of inner tube plated film; Behind the outer wall of inner tube plated film, interior pipe, outer tube assembling combination, exhaust and finished products, and last, carry out the getter mirror-polishing and all carry out according to a conventional method.
2. the preparation method with all-glass vacuum thermal-collecting tube of regular prism-shaped interior pipe according to claim 1, it is characterized in that: axially the length L of pipe (12) should be coaxial mutually continuously for the total length of one is complementary with a left side section (7), stage casing (8), the right section (9) of the interior pipe (2) that presets in the regular prism-shaped blank of entire body formula, at least than the big 40mm of length S of the all-glass vacuum thermal-collecting tube with regular prism-shaped interior pipe that presets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100910148A CN101639295B (en) | 2009-08-18 | 2009-08-18 | All-glass vacuum heat collection pipe with regular prism-shaped inner pipe and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100910148A CN101639295B (en) | 2009-08-18 | 2009-08-18 | All-glass vacuum heat collection pipe with regular prism-shaped inner pipe and production method thereof |
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| CN101639295A CN101639295A (en) | 2010-02-03 |
| CN101639295B true CN101639295B (en) | 2011-04-20 |
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| CN2009100910148A Expired - Fee Related CN101639295B (en) | 2009-08-18 | 2009-08-18 | All-glass vacuum heat collection pipe with regular prism-shaped inner pipe and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102538251A (en) * | 2010-12-28 | 2012-07-04 | 济南鑫诺太阳能管业有限公司 | Solar vacuum tube |
| CN106123361A (en) * | 2016-06-24 | 2016-11-16 | 芜湖市万里达新能源有限公司 | A kind of solar vacuum heat-collecting pipe and production technology thereof |
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