CN102102916A - Heat collecting pipe for trough-type solar energy heat power generation and manufacturing method thereof - Google Patents
Heat collecting pipe for trough-type solar energy heat power generation and manufacturing method thereof Download PDFInfo
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- CN102102916A CN102102916A CN2009102593759A CN200910259375A CN102102916A CN 102102916 A CN102102916 A CN 102102916A CN 2009102593759 A CN2009102593759 A CN 2009102593759A CN 200910259375 A CN200910259375 A CN 200910259375A CN 102102916 A CN102102916 A CN 102102916A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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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
Abstract
The invention relates to a vacuum heat collecting pipe used for trough-type solar energy heat power generation, belonging to the technical field of solar energy heat utilization. In the technical scheme, a compressed sealing-in technology is adopted in a sealing-in structure of the vacuum heat collecting pipe and two simplified unloading modes are adopted in an unloading device. The vacuum heat collecting pipe has the advantages of fewer components, simplicity in process and low manufacturing cost, thereby being suitable for not only solar energy heat power generation, but also other small-sized trough-type heat utilization devices such as a solar energy air-conditioning refrigeration device, a solar energy sea water desalination device and the like.
Description
Technical field
The present invention relates to a kind of vacuum heat collection pipe that trough type solar power generation is used that is used for, the compression sealing structure is adopted in its glass-to-metal sealing, discharge mechanism adopts two kinds of unloading modes simplifying, parts are few in addition, technology simple, low cost of manufacture because of it, be not only applicable to solar energy thermal-power-generating, be fit to other yet as small-sized slot type heat utilization device such as solar airconditioning refrigeration, solar seawater desalinations.Belong to the solar energy utilization technique field.
Background technology
At present, both at home and abroad about the difference of the vacuum heat collection pipe that in the trough type solar power generation device, uses mainly on structural design and sealing-in mode.What Solel and company adopted is outer unloading structure, and what Schott company adopted is interior unloading structure, and the hot melt sealing-in is all adopted in glass-to-metal sealing, but concrete grammar is variant.Though China authorizes patent of invention 200610038197.3 to adopt interior unloading structure, glass-to-metal sealing adopts adhesive to seal admittedly, and obviously, this sealing technology can't guarantee vacuum and service life.What authorize patent of invention 200610112005.9 employings is outer unloading structure, but this structure is the early stage technical scheme of U.S. Luz company, and selecting molybdenum group glass is the technological core of this patent as the glass outer tube, and purpose is in order to solve glass-to-metal sealing.Molybdenum group glass also claims electronic glass No. 8 in China's electron trade, is mainly used in the making of conditional electronic pipe, because self thermal-shock resistance difference and texturing problem are not generally used in atmospheric environment.Although, realize that really the possibility of industrialization is very little so these two patents of invention are authorized.Improved 200420091975.1 and 200620113317.7 patents of inventor with inside and outside offloading functions, and 200720143975.5 patent be suitable for suitability for industrialized production fully through producing proof, this thermal-collecting tube is used in solar airconditioning refrigeration and large-scale tank-type thermal power generation device.But from case making, find, the sealing structure of thermal-collecting tube and discharge mechanism also have the leeway of further optimizing, for further improving stability and reliability, in through engineering approaches and industrialization, new breakthrough is arranged, constantly dwindle the gap with external like product, should be on above-mentioned patent basis the sealing structure of trough type solar power generation thermal-collecting tube and discharge mechanism and material be optimized configuration.
Summary of the invention
Technical problem to be solved by this invention is to adopt the compression sealing technology to improve the stability and the reliability of trough type solar power generation heat-collecting tube sealing structure and discharge mechanism.
The alleged problem of the present invention is solved by following technical scheme:
The trough type solar power generation thermal-collecting tube cuts pipe, metal inner pipe, metal end, iron nickel by glass outer tube, glass and can cut down part, unloading bellows, glass sealing material, pipe connecting piece, the ring of cooling down, blast pipe and form, and it is characterized in that: unload bellows and be arranged on the thermal-collecting tube two ends; It is the convex body tube-like piece that iron nickel can cut down part, and an end and glass cut pipe by the sealing-in of glass sealing material hot melt, other end ring port and the welding of metal end outer argon arc; Metal end and the welding of unloading bellows one end argon arc, the unloading bellows other end and the welding of pipe connecting piece argon arc, pipe connecting piece and the welding of metal inner pipe argon arc, metal inner pipe outer surface vacuum sputtering is high temperature resistant selective thermal absorber coatings; The boxing of cooling down is connected on the metal inner pipe.
It is 33 * 10 that described glass outer tube is selected linear expansion coefficient
-7/ ℃ high hard high transmission rate and have 3.3 high-boron-silicon glass pipes of high-fire resistance; High-boron-silicon glass also claims to send Simon Rex glass, and is very extensive in China's solar water heater sector application, and cost is also very low, though linear expansion coefficient is 33 * 10
-7/ ℃, be difficult to and domestic kovar alloy match materials, but its physical property is well suited for solar energy thermal-power-generating.
It is the glass short tube that forms according to instructions for use glass-cutting outer tube that described glass cuts pipe, and the purpose of cutting is in order to implement glass-to-metal sealing better.Wherein an end is made the glass flange, and the sealing-in mouth becomes the curved surface shape, and can to cut down the part sealing surface corresponding with iron nickel, and the other end and glass outer tube sealing by fusing connect.
Described metal end is meant the metal end of making of stainless steel material, and the metal end punching press is made into the spill end cap, interior circle and cylindrical flanged edge making welding junction, wall thickness 0.5-1mm.
Described iron nickel can cut down the part punching press and be made into different convex ring or the broadening formation sealing-in pipe fittings in interior garden, and wherein an end is corresponding with glass flange sealing-in curved surface, preferred iron nickel cobalt glass sealing alloy 4J29,4J44, and linear expansion coefficient is (46-55) * 10 in the time of 20-450 ℃
-7/ ℃; Or to select 4J42,4J45 linear expansion coefficient be (40-75) * 10 in the time of 20-450 ℃
-7/ ℃ iron nickel kovar alloy; Wall thickness is advisable with 0.3-1.5mm.As shown in Figure 2.
The linear expansion coefficient of described glass sealing material is (40-55) * 10
-7/ ℃, cut pipe and iron nickel can cut down between the part between glass, softening and wandering temperature is 300-800 ℃, lead oxide content is greater than 60% leaded low-melting-point glass powder.
Described each node of unloading bellows has the absorption function of 1-2mm at least, and the node number is at the 2-20 ripple, and the node number is very few can not to satisfy metal inner pipe expansion absorption amount, crosses to increase heat loss at most.The bellows wall thickness is 0.18-0.3mm, wave height 5-16mm, pitch of waves 3-12mm, bellows inside nominal diameter 32-90mm; Anti-fatigue life should be greater than 30,000 times; Preferred SUS304,321 or SUS316,316L stainless steel material, by moulding, beat ripple, the heat treatment of annealing can meet the demands, the straight flange welding section is reserved at two ends.
Described pipe connecting piece is the plate-like piece of central bore flange, and endoporus and metal inner pipe are complementary, turn-up portion and metal inner pipe welding, and planar section end and the welding of unloading bellows argon arc, material is a stainless steel, wall thickness is 0.3-1.5mm.A kind of pipe connecting piece that interior unloading structure uses is an end reducing, the tube-like piece of other end enlarging; Necking end and the welding of metal inner pipe argon arc, flared end and the welding of unloading bellows, as shown in Figure 3.
The inside nominal diameter of described metal inner pipe is between 25-80mm, wall thickness is between 0.3-13mm, nominal pressure is between 0.6-25MPa, preferred SUS304,321 or SUS316,316L stainless steel material or boiler alloy seamless steel pipe, select metal inner pipe will be between pipe wall thickness, working medium flow and bearing pressure appropriate balance; Metal inner pipe is a metal straight pipe, or bellows tube, or helix tube, or long luxuriant metal tube.
Described blast pipe is 33 * 10
-7/ ℃ the high-boron-silicon glass pipe, internal diameter 8-20mm, welding cuts on the pipe at glass outer tube or glass.
Described compression sealing-in is meant anti-(pressure) strength characteristics of opening of utilizing high-boron-silicon glass outstanding, soft glass transition sealing in the middle of between metal and glass, adopting, the order outside reaching in the thermal coefficient of expansion of three kinds of relevant seal, sealing materials has is: iron nickel can cut down part＞lead oxide low-melting-point glass＞high-boron-silicon glass; For further improving glass outer tube tensile strength, cut Guan Yiduan at glass and make the glass flange, the straight flange and the curved face part sealing by fusing that can cut down part and glass flange by iron nickel connect, and guarantee the air-tightness and the reliability of glass-to-metal sealing.
Concrete procedure of processing is:
1) at first iron nickel can be cut down part (4) punching stretch forming is tube-like piece, and an end reducing becomes the curved surface sealed end, and other end flange is standby after the pre-oxidation treatment in 800-1100 ℃ of wet hydrogen environment.
2) become glass to cut pipe (10) glass outer tube (1) pipe cutting, the end becomes flange-like glass sealing mouth with the flame scorification on glass work lathe or rotary table, the sealing-in mouth is a curved surface and can to cut down part (4) curved surface sealed end corresponding for iron nickel, glass sealing material (6) after being in harmonious proportion is coated in evenly glass cuts pipe (10) and iron nickel can cut down part (4) curved surface sealed end, the advance method of sealing by fusing of static sealing by fusing or tunnel cave is adopted in bonding back, after treating that iron nickel kovar alloy (4) and glass cut the abundant welding of pipe (10), press the heat treatment of glass operational procedure, through annealing, destressing, welding blast pipe (9) back is standby.
3) glass after sealing by fusing connects cuts pipe (10) and carries out helium mass spectrum leak detection, guarantees air-tightness and sealing strength.
4) have that glass that iron nickel can cut down part (4) cuts pipe (10) and glass outer tube (2) sealing by fusing on glass work lathe connects.
5) dished center drilling end cap is made in metal end (3) punching press, one end and the welding of unloading bellows (5) straight flange end argon arc, unloading bellows (5) other end and pipe connecting piece (7) welding unload the assembly leak detection, afterwards as a whole then 500 ℃ of vacuum environment high-temperature degassing.
6) metal inner pipe (2) polishing, leak detection, 500 ℃ of vacuum environment high-temperature degassing are put into the high temperature resistant selective thermal absorber coatings of coating chamber sputter, and the ring (8) of will cooling down is welded on the metal inner pipe (2), and is standby.
7) assembling homogeneous tube, at glass outer tube (1) two ends welding unloading assembly, metal end (3) cylindrical and iron nickel can cut down the welding of part (4) cylindrical argon arc, and the metal inner pipe behind the plated film (2) is inserted in the glass outer tube (1) from the middle order of pipe connecting piece (7).
8) pipe connecting piece of an end (7) and metal inner pipe (2) argon arc welding stretches before pipe connecting piece of the other end (7) and the welding of metal inner pipe (2) argon arc, makes the unloading bellows (5) at two ends become closure state, welds with metal inner pipe (2) then.Interior unloading structure is opposite, treats that the bellows node at two ends all opens back enforcement welding.
9) after assembling finishes on the vacuum exhaust platform in 400 ℃ of high-temperature vacuum exhausts guarantee vacuum reach 3 * 10
-3
10) activate getter on high-frequency induction welder, common name " roasting disappearing " confirms that through leak detection vacuum meets technical indicator.As shown in Figure 1, obtain complete trough type solar power generation thermal-collecting tube after the homogeneous tube process finishing.
The parts that the present invention uses are few, and technology is simple, and adopts brand-new compression sealing by fusing connection technology and two kinds of unloading structures, and manufacturability and reliability are further improved.This thermal-collecting tube can be widely used in group's heat supply, solar airconditioning refrigeration, solar seawater desalination, general industry heat supply etc. and utilize the solar industry of line focus device with in the hot equipment.
Description of drawings
Fig. 1 is that the present invention unloads the sealing structure schematic diagram outward
Fig. 2 is that iron nickel of the present invention can cut down the part structural representation
Fig. 3 is a unloading sealing structure schematic diagram in the present invention
Wherein: 1 glass outer tube, 2 metal inner pipes, 3 metal ends, 4 iron nickel can cut down cool down ring, 9 blast pipes, 10 glass of part, 5 unloading bellowss, 6 glass sealing material, 7 pipe connecting pieces, 8 and cut pipe
The specific embodiment
1) at first iron nickel can be cut down part (4) punching stretch forming is tube-like piece, and an end reducing becomes the curved surface sealed end, and other end flange is standby after the pre-oxidation treatment in 800-1100 ℃ of wet hydrogen environment.
2) become glass to cut pipe (10) glass outer tube (1) pipe cutting, the end becomes flange-like glass sealing mouth with the flame scorification on glass work lathe or rotary table, the sealing-in mouth is a curved surface and can to cut down part (4) curved surface sealed end corresponding for iron nickel, glass sealing material (6) after being in harmonious proportion is coated in evenly glass cuts pipe (10) and iron nickel can cut down part (4) curved surface sealed end, the advance method of sealing by fusing of static sealing by fusing or tunnel cave is adopted in bonding back, after treating that iron nickel kovar alloy (4) and glass cut the abundant welding of pipe (10), press the heat treatment of glass operational procedure, through annealing, destressing, welding blast pipe (9) back is standby.
3) glass after sealing by fusing connects cuts pipe (10) and carries out helium mass spectrum leak detection, guarantees air-tightness and sealing strength.
4) have that glass that iron nickel can cut down part (4) cuts pipe (10) and glass outer tube (2) sealing by fusing on glass work lathe connects.
5) dished center drilling end cap is made in metal end (3) punching press, one end and the welding of unloading bellows (5) straight flange end argon arc, unloading bellows (5) other end and pipe connecting piece (7) welding unload the assembly leak detection, afterwards as a whole then 500 ℃ of vacuum environment high-temperature degassing.
6) metal inner pipe (2) polishing, leak detection, 500 ℃ of vacuum environment high-temperature degassing are put into the high temperature resistant selective thermal absorber coatings of coating chamber sputter, and the ring (8) of will cooling down is welded on the metal inner pipe (2), and is standby.
7) assembling homogeneous tube, at glass outer tube (1) two ends welding unloading assembly, metal end (3) cylindrical and iron nickel can cut down the welding of part (4) cylindrical argon arc, and the metal inner pipe behind the plated film (2) is inserted in the glass outer tube (1) from the middle order of pipe connecting piece (7).
8) pipe connecting piece of an end (7) and metal inner pipe (2) argon arc welding stretches before pipe connecting piece of the other end (7) and the welding of metal inner pipe (2) argon arc, makes the unloading bellows (5) at two ends become closure state, welds with metal inner pipe (2) then.Interior unloading structure is opposite, treats that the bellows node at two ends all opens back enforcement welding.
9) after assembling finishes on the vacuum exhaust platform in 400 ℃ of high-temperature vacuum exhausts guarantee vacuum reach 3 * 10
-3
10) activate getter on high-frequency induction welder, common name " roasting disappearing " confirms that through leak detection vacuum meets technical indicator.As shown in Figure 1.
Claims (10)
1. the trough type solar power generation thermal-collecting tube cuts pipe, metal inner pipe, metal end, iron nickel by glass outer tube, glass and can cut down part, unloading bellows, glass sealing material, pipe connecting piece, the ring of cooling down, blast pipe and form, and it is characterized in that: unload bellows and be arranged on the thermal-collecting tube two ends; It is the convex body tube-like piece that iron nickel can cut down part, and an end and glass cut pipe by the sealing-in of glass sealing material hot melt, other end ring port and the welding of metal end outer argon arc; Metal end and the welding of unloading bellows one end argon arc, the unloading bellows other end and the welding of pipe connecting piece argon arc, pipe connecting piece and the welding of metal inner pipe argon arc, metal inner pipe outer surface vacuum sputtering is high temperature resistant selective thermal absorber coatings; The boxing of cooling down is connected on the metal inner pipe.
2. trough type solar power generation thermal-collecting tube according to claim 1 is characterized in that: it is 33 * 10 that described glass outer tube is selected linear expansion coefficient
-7/ ℃ high hard high transmission rate and have 3.3 high-boron-silicon glass pipes of high-fire resistance; It is the glass short tube that forms according to instructions for use glass-cutting outer tube that glass cuts pipe.
3. trough type solar power generation thermal-collecting tube according to claim 1 is characterized in that: described metal end is to be made into the spill end cap with stainless steel material through punching press, and interior circle and cylindrical flange are welding junction, wall thickness 0.5-1mm.
4. trough type solar power generation thermal-collecting tube according to claim 1, it is characterized in that: described iron nickel can cut down the part punching press and be made into different convex ring or the broadening formation pipe fittings in interior garden, preferred iron nickel cobalt glass sealing alloy 4J29,4J44, linear expansion coefficient is (46-55) * 10 in the time of 20-450 ℃
-7/ ℃; Or to select 4J42,4J45 linear expansion coefficient be (40-75) * 10 in the time of 20-450 ℃
-7/ ℃ iron nickel can cut down part, wall thickness is advisable with 0.3-1.5mm.
5. trough type solar power generation thermal-collecting tube according to claim 1 is characterized in that: the linear expansion coefficient of described glass sealing material is (40-55) * 10
-7/ ℃, softening and wandering temperature is 300-800 ℃, lead oxide content is greater than 60% leaded low-melting-point glass powder.
6. trough type solar power generation thermal-collecting tube according to claim 1, it is characterized in that: described each node of unloading bellows has the absorption function of 1-2mm at least, the node number is at the 2-20 ripple, the bellows wall thickness is 0.18-0.3mm, wave height 5-16mm, pitch of waves 3-12mm, bellows inside nominal diameter 32-90mm; Anti-fatigue life should be greater than 30,000 times; Select SUS304,321 or SUS316,316L stainless steel material, the straight flange welding section is stayed at two ends.
7. trough type solar power generation thermal-collecting tube according to claim 1, it is characterized in that: described pipe connecting piece is the plate-like piece of central bore flange, and endoporus and metal inner pipe are complementary, turn-up portion and metal inner pipe welding, planar section end and the welding of unloading bellows argon arc, material is a stainless steel; A kind of pipe connecting piece that interior unloading structure uses is an end reducing, the tube-like piece of other end enlarging; Necking end and the welding of metal inner pipe argon arc, flared end and the welding of unloading bellows; Wall thickness is all at 0.3-1.5mm.
8. trough type solar power generation thermal-collecting tube according to claim 1, it is characterized in that: the inside nominal diameter of described metal inner pipe is at 25-80mm, wall thickness is at 0.3-13mm, nominal pressure is at 0.6-25MPa, preferred SUS304,321 or SUS316,316L stainless steel material, or boiler alloy seamless steel pipe; The metal inner pipe structure is a metal straight pipe, or bellows tube, or helix tube, or long luxuriant metal tube.
9. trough type solar power generation thermal-collecting tube according to claim 1 is characterized in that: described blast pipe is 33 * 10
-7/ ℃ the high-boron-silicon glass pipe, internal diameter 8-20mm, welding cuts on the pipe at glass outer tube or glass.
10. according to the concrete procedure of processing of the described trough type solar power generation thermal-collecting tube of claim 1 be:
1) at first iron nickel can be cut down part (4) punching stretch forming is tube-like piece, and an end reducing becomes the curved surface sealed end, and other end flange is standby after the pre-oxidation treatment in 800-1100 ℃ of wet hydrogen environment;
2) become glass to cut pipe (10) glass outer tube (1) pipe cutting, the end becomes flange-like glass sealing mouth with the flame scorification on glass work lathe or rotary table, the sealing-in mouth is a curved surface and can to cut down part (4) curved surface sealed end corresponding for iron nickel, glass sealing material (6) after being in harmonious proportion is coated in evenly glass cuts pipe (10) and iron nickel can cut down part (4) curved surface sealed end, the advance method of sealing by fusing of static sealing by fusing or tunnel cave is adopted in bonding back, after treating that iron nickel kovar alloy (4) and glass cut the abundant welding of pipe (10), press the heat treatment of glass operational procedure, through annealing, destressing, welding blast pipe (9) back is standby;
3) glass after sealing by fusing is connect cuts pipe (10) and carries out helium mass spectrum leak detection, guarantees air-tightness and sealing strength;
4) have that glass that iron nickel can cut down part (4) cuts pipe (10) and glass outer tube (2) sealing by fusing on glass work lathe connects;
5) dished center drilling end cap is made in metal end (3) punching press, one end and the welding of unloading bellows (5) straight flange end argon arc, unloading bellows (5) other end and pipe connecting piece (7) welding unload the assembly leak detection, afterwards as a whole then 500 ℃ of vacuum environment high-temperature degassing;
6) metal inner pipe (2) polishing, leak detection, 500 ℃ of vacuum environment high-temperature degassing are put into the high temperature resistant selective thermal absorber coatings of coating chamber sputter, and the ring (8) of will cooling down is welded on the metal inner pipe (2), and is standby;
7) assembling homogeneous tube, at glass outer tube (1) two ends welding unloading assembly, metal end (3) cylindrical and iron nickel can cut down the welding of part (4) cylindrical argon arc, and the metal inner pipe behind the plated film (2) is inserted in the glass outer tube (1) from the middle order of pipe connecting piece (7);
8) pipe connecting piece (7) and the metal inner pipe (2) of the welding other end behind pipe connecting piece of an end (7) and metal inner pipe (2) the argon arc welding access node bundle, for the unloading bellows (5) that makes two ends becomes pre-stressed state, before the argon arc welding metal inner pipe is stretched, treat all closed back welded pipe fitting of bellows node and the metal inner pipe (2) at two ends; Interior unloading structure is opposite, treats that the bellows node at two ends all opens back enforcement welding;
9) after assembling finishes on the vacuum exhaust platform through exhaust pipe mouth vacuum exhaust under 400 ℃ of high-temperature atmosphere conditions of interior pipe, vacuum reaches (3-5) * 10 in guaranteeing
-3
10) activate getter on high-frequency induction welder, common name " roasting disappearing " confirms that through leak detection vacuum meets technical indicator, can obtain complete trough type solar power generation thermal-collecting tube.
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| CN112663808A (en) * | 2020-12-09 | 2021-04-16 | 安徽鼎元新材料有限公司 | Rock wool heat preservation fire prevention composite sheet for outer wall cracking prevention |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112663808A (en) * | 2020-12-09 | 2021-04-16 | 安徽鼎元新材料有限公司 | Rock wool heat preservation fire prevention composite sheet for outer wall cracking prevention |
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Application publication date: 20110622 |