CN102526909A - Long-channel air vortex plug smoke isolation system - Google Patents
Long-channel air vortex plug smoke isolation system Download PDFInfo
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- CN102526909A CN102526909A CN2012100350434A CN201210035043A CN102526909A CN 102526909 A CN102526909 A CN 102526909A CN 2012100350434 A CN2012100350434 A CN 2012100350434A CN 201210035043 A CN201210035043 A CN 201210035043A CN 102526909 A CN102526909 A CN 102526909A
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Abstract
The invention discloses a long-channel air vortex plug smoke isolation system and belongs to the fields of fire protection technologies and facilities. The long-channel air vortex plug smoke isolation system comprises a long channel facility and an air vortex plug forming system in a long channel, wherein the air vortex plug forming system consists of two high-speed airflow generating devices, two high-speed airflow suction channels, two high-speed airflow injection ports and two high-speed airflow suction ports which are oppositely arranged respectively; a forced airflow vortex center, namely an air vortex plug area is formed in the long channel under the action of high-speed airflows formed oppositely; and smoke airflow is isolated in a smoke flowing area in a long channel on one side of the air vortex plug area through the air vortex plug area, so that a long channel on the other side of the air vortex plug area is a smoke-free safe area. By the system, external fresh air is not injected in the field in the process of isolating smoke, obvious contradictions of introducing combustion air during fire suppression and smoke isolation in the prior art are avoided, a smoke isolation air vortex area with high smoke isolation capacity can be rapidly and efficiently formed, and precious time and space are provided for fire suppression and escape.
Description
Technical field
Long-channel air of the present invention whirlpool plug belongs to fire prevention and facility field at a distance from the cigarette system.
Background technology
All there are various elongate channel in various civil buildings, industrial and mining enterprises production scene or above-water large-scale naval vessel, in case the condition of a fire takes place, the flue gas that burning produces will spread through this type of passage without barrier fast.According to statistics, in fire, there is the people more than 80% to cause death approximately because of flue gas.
During the long-channel fire,, adopt following several method usually in order to control spreading of flue gas:
One, in passage, blows
This method is stoping flue gas when certain direction moves, has not only increased the weight of to the spreading of other directions, and to the fire area ozone is provided, and has increased the weight of burning;
Two, in passage, keep the malleation that is higher than flue gas
This method needs closed channel, increases the passage inner air pressure.
Three, utilizing air curtain to carry out flexibility cuts off
The advantage of using air curtain is the transfer barrier that forms rerum natura through high velocity air, when intercepting flue gas, can not influence the unimpeded of passage, is convenient to personnel from escape from fire.Shortcoming is that air curtain can not intercept flue gas fully, and the air curtain air inlet has difficulties, and has inconvenience installing, and therefore is restricted in the use.Patent Smoke Preventing Air Curtain in High Rise Building (01273155.2), additionaling power fire smoke-preventing air curtain system (200410014975.6) etc.
Severe problem when the condition of a fire occurring in the face of the long-channel structure presses for a kind of air-flow baffle system that can efficiently isolate the incorporeity obstacle of flue gas of exploitation, effectively stops flue gas to spread along long-channel, and guarantees the without hindrance escape of personnel.
Summary of the invention
The purpose of this invention is to provide a kind of long-channel air whirlpool plug at a distance from the cigarette system; Through to long-channel swiftly flowing air being provided with set angle; Make the air in long-channel be rotated into vortex at a high speed, the air in the vortex is made around the movement around the center, and vortex is not done the plane motion of macroscopic view; Promptly form plug district, air whirlpool; Make the flue gas incoming flow of plug district, air whirlpool one side in the long-channel can't break through the long-channel that plug district, air whirlpool enters into plug district, air whirlpool opposite side, thereby intercept flue gas spreading in whole long-channel, for fire extinguishing and escape provide escape way.
Realize the scheme of the object of the invention: long-channel air of the present invention whirlpool plug is at a distance from the cigarette system; Comprise air whirlpool plug formation system in long-channel facility and the long-channel; In the long-channel facility is normality air draught space; Characteristics are that plug formation system in air whirlpool is made up of two the high velocity air generating means that are oppositely arranged, high velocity air aspirating unit, high velocity air puff prot and high velocity air air entries, under the action of high-speed airflow that is oppositely arranged; In long-channel, form the forced draft vortex center; Be plug district, air whirlpool, the flue gas stream that takes place in the long-channel intercepted the flue gas incoming flow district in one of which side long-channel, make the long-channel of plug district, air whirlpool opposite side be no flue gas place of safety through this plug district, air whirlpool.
Be respectively air whirlpool plug transition region between the plug district, air whirlpool of the above-mentioned long-channel air whirlpool separated cigarette system of plug and the flue gas incoming flow district of its both sides and the place of safety.
Air whirlpool plug formation system in the above-mentioned long-channel; Its two the high velocity air aspirating units that are oppositely arranged are provided with along the long-channel two walls outside is corresponding; Two high velocity air generating means are separately positioned on diagonally opposing corner one end of two high velocity air aspirating units; The puff prot correspondence of two high velocity air generating means is located at the long-channel wall, and coming the angle between flow path direction and the long-channel wall with its relative flue gas is the air-flow jet angle, and puff prot sprays high velocity air by setting the air-flow jet angle; Air entry is located at the long-channel wall of two high velocity air aspirating unit other ends respectively.
The air-flow jet angle of the puff prot of two high velocity air generating means of air whirlpool plug formation system is 10 °～90 ° in the above-mentioned long-channel, and its puff prot width depends on the high velocity air generating means type in the concrete environment for use.
Air whirlpool plug formation system is provided with the smoke filtration net in the above-mentioned long-channel in the high velocity air aspirating unit of two high velocity air aspirating units or nearly flue gas incoming flow air entry.
Air whirlpool plug formation system in the above-mentioned long-channel is provided with scalable reducing baffle plate at the air entry of high velocity air aspirating unit.
Above-mentioned long-channel air whirlpool plug is at a distance from the cigarette system; The corresponding top and the bottom of the long-channel outside the nearly flue gas incoming flow of high velocity air aspirating unit air entry are provided with boundary layer baffler slot, and the boundary layer baffler can be selected to insert in long-channel inner top and/or the bottom boundary baffler slot.
Long-channel air of the present invention whirlpool plug is at a distance from the cigarette system, and creatively in the long-channel space, forming vortex center through the forced convertion air is plug district, air whirlpool.Through the flexible iris action in plug district, air whirlpool, intangibly long-channel is divided into flue gas stream and comes source region, air whirlpool plug transition region, plug district, air whirlpool and place of safety.Plug district, air whirlpool intercepts flue gas stream in the long-channel of its side of originating effectively; Making plug district, air whirlpool opposite side is the place of safety of smokeless air stream contamination; Thereby make the stream of people that receives smoke pollution one side through there not being the plug district, air whirlpool of any tangible obstruction, and get into safe escape in the long-channel safe space of plug district, air whirlpool opposite side.
The theoretical foundation of innovative design of the present invention is: form the forced draft vortex center in the long-channel between the high velocity air aspirating unit of both sides; This air-flow vortex central area has certain vacuum; Air pressure increases with the distance of leaving vortex center; Reach maximum on the edge of, force value is confirmed by the vacuum at rotary speed, the distance of leaving vortex center and center.When high-temperature flue gas contact with whirlpool plug district through whirlpool plug transition region, as long as the pressure of flue gas is not more than whirlpool plug rim pressure (whirlpool plug rim pressure scalable), flue gas just can't be broken through the whirlpool and fill in, so the variation of native system ability self adaptation flue gas pressures.Simultaneously, the whirlpool of inducing through the plug transition region generation in the whirlpool also makes kinetic energy, potential energy and the pressure energy of fire zone flue gas obtain consumption, thereby has formed dynamic average pressure stable variation zone, does not have the flue gas migration of macroscopic view.As long as plug flow field, whirlpool is not destroyed by flue gas, the pressure balance on plug border, whirlpool still exists, and the air on passage plug both sides in the whirlpool just can not flow to the other side mutually, promptly reaches the purpose that intercepts flow of flue gas in the passage.
The present invention comes angle between the long-channel wall of flow path direction as the high velocity air jet angle with air-flow injection direction and flue gas, this high velocity air jet angle changes at setting range, the design's puff prot width decision high velocity air jet thickness; The puff prot width then depends on the high velocity air generating means type of being selected for use; Generally speaking, jet speed is big more, and then it is strong more at a distance from the cigarette ability; Width of jet more greatly then high velocity air layer thickness is big more; It is then good more at a distance from the cigarette effect, through Comprehensive Control air-spray angle and puff prot width, to reach optimum efficiency.
In addition; The air entry of the air-spray that the present invention uses all is arranged on long-channel inside; And air entry opening length can be regulated according to actual; Can the fresh air of outside not injected the scene of a fire in the cigarette process, avoid encouraging on the contrary to scene of a fire delivering oxygen in separated cigarette at a distance from the cigarette device conspicuous contradiction of the intensity of a fire like flexibility of prior art.Simultaneously be provided with the smoke filtration system, eliminate a small amount of flue gas that penetrates air whirlpool plug through the microcosmic diffusion in internal system.
In sum, the present invention can rapidly and efficiently form has powerful plug district, separated cigarette air whirlpool at a distance from the cigarette ability, and passage is unimpeded in the cigarette process, for putting out a fire and escape provides valuable time and space.
Description of drawings
Fig. 1 air of the present invention whirlpool plug is at a distance from cigarette system vertical view
Fig. 2 air of the present invention whirlpool plug is at a distance from cigarette system side view
Plug district, Fig. 3 air of the present invention whirlpool, air whirlpool plug transition region, flue gas incoming flow district and flow field, place of safety sketch map
Fig. 4 system of the present invention is used for the building channel sketch map
Fig. 5 system of the present invention is used for the boats and ships access diagram
Fig. 6 system of the present invention is used for the tunnel sketch map
The specific embodiment
How combine accompanying drawing and embodiment to further specify the present invention implements at present:
As shown in Figure 1, two high velocity air aspirating units 1,2 are provided with along the long-channel two walls outside is corresponding, and two high velocity air generating means Q1, Q2 are separately positioned on diagonally opposing corner one end of high velocity air aspirating unit 1,2.The puff prot P1 of high velocity air generating means Q1 and Q2, P2 come flow path direction to spray high-speed air to set spray angle towards flue gas.Come angle between the long-channel wall of flow path direction as the jet angle of P1 and P2 with air-flow injection direction and deflection flue gas, its scope is 10 °～90 °.Air entry X1, X2 are located at respectively on the long-channel wall of two high velocity air aspirating units, 1,2 other ends, and two high velocity air aspirating units 1 and 2 perhaps are provided with smoke filtration net 3 in the high velocity air aspirating unit 1 of nearly flue gas incoming flow air entry X1.High velocity air aspirating unit 1 and 2 air entry are provided with the closed-entry baffle plate; Long-channel inner top and bottom are provided with boundary layer baffler slot 4; Boundary layer baffler 5 can be selected to insert in long-channel inner top and/or the bottom boundary baffler slot 4; To eliminate top and bottom, guarantee the flue gas obstructing capacity because of the influence of boundary layer effect to the obstructing capacity of flue gas; The reducing controllable register of air entry can be adjusted the air entry stretching degree, and the high velocity air that high velocity air generating means Q2 ejects is impacted by the flue gas incoming flow, and part air-flow streamline changes, and is absorbed by high velocity air generating means Q1 suction end; The high velocity air that high velocity air generating apparatus Q1 ejects can stop and penetrate the partial fume that high velocity air generating means Q2 ejects air-flow, and forms circulation with the inspiratory flow line of high velocity air generating means Q2.Influenced by circulation, in passage, form the lower scroll that has obstruct flue gas incoming flow ability and do not have obvious displacement, i.e. air whirlpool plug district A.The flue gas incoming flow district C that this plug district, air whirlpool A can intercept the flue gas incoming flow in plug district, air whirlpool A one side effectively; Making air whirlpool plug district A opposite side become the place of safety D of no flue gas, is respectively air whirlpool plug transition region B between the flue gas incoming flow district of plug district, intermediate air whirlpool and its both sides and the place of safety.
Extensively there is long-channel in the building channel, like the corridor in hotel or hotel, the passageway of large-scale office building etc.In above-mentioned place during breaking out of fire, flue gas in building the general mainly along the corridor or the passageway spread.Because this kind place flow of the people is big, closing passage will influence personnel's escape, if the flue gas of closing passage fire generation will not spread to other floors through passage, causes the expansion of fire scope.Air whirlpool plug can keep the unimpeded of passage at a distance from the air whirlpool plug that the cigarette system produces when stopping flow of flue gas, address the above problem preferably.
With certain building channel is example, and the deployment scenarios of long-channel air of the present invention whirlpool plug at a distance from the cigarette system is described, as shown in Figure 4.This channel width is 1.8m, highly is 2.5m.High velocity air aspirating unit 1 that two are oppositely arranged and 2 length are 4.0m; The inlet channel width is 0.45m; The air-flow spray angle of high-velocity jets generating apparatus Q1 and Q2 is respectively 85 ° and 60 °; Air-spray speed is about 15m/s, and the width of puff prot P1, P2 is 0.15m, and smoke filtration net 3 is arranged in the high velocity air aspirating unit 1.Width is that the boundary layer baffler 5 of 1.8m inserts respectively in the boundary layer baffler slot 4 of long-channel inner top and bottom, and air entry X1 has reducing baffle plate N1.
By the design; Under high velocity air that is oppositely arranged and air-breathing circulation effect; Can form plug district, air whirlpool A in the long-channel; The flue gas incoming flow district C that this plug district, air whirlpool A can intercept the flue gas incoming flow in plug district, air whirlpool A one side effectively, making air whirlpool plug district A opposite side is place of safety D, is respectively air whirlpool plug transition region B between the flue gas incoming flow district of plug district, intermediate air whirlpool and its both sides and the place of safety.
Spread similarly with flue gas in the building fire, the flue gas in the ship fire spreads mainly that long-channel in the boats and ships carries out through being arranged on.Boats and ships are because layouts needs, and the inner passage is many to be main to grow straight channel, generally can reach 20m～30m, and length can reach rice up to a hundred.Since its width of channel of difference of ship type and effect with highly all there are differences, width is generally 0.6m～5m, highly is generally 2.4m～8m.Be 0.6m below with the width, highly, as shown in Figure 5 for the long-channel vertical view of 2.4m is that example is introduced the deployment scenarios of long-channel air whirlpool plug at a distance from the cigarette system.
In this example, channel width is 0.6m, highly is 2.4m, and high velocity air aspirating unit 1 that two are oppositely arranged and 2 length are 1.7m, and the air intake duct width of both sides is 0.3m.The air-spray flow velocity that high-velocity jets generating apparatus Q1, Q2 generate is about 10m/s.The air-flow spray angle of high-velocity jets generating apparatus Q1 is 80 °, and the air-spray spray angle that high-velocity jets generating apparatus Q2 generates is 45 °, and the width of puff prot P1, P2 is 0.09m.Smoke filtration net 3 is arranged in the high velocity air aspirating unit 1.Width is that two boundary layer bafflers 5 of 0.6m insert respectively in the boundary layer baffler slot 4 of long-channel inner top and bottom, and air entry X2 has closed-entry fender plate N2.
By the design; Under high velocity air that is oppositely arranged and air-breathing circulation effect; Can form plug district, air whirlpool A in the long-channel; The flue gas incoming flow district C that this plug district, air whirlpool A can intercept the flue gas incoming flow in plug district, air whirlpool A one side effectively, making air whirlpool plug district A opposite side is place of safety D, is respectively air whirlpool plug transition region B between the flue gas incoming flow district of plug district, intermediate air whirlpool and its both sides and the place of safety.
The tunnel is present in the middle of the life widely, like river-crossing tunnel, subway and mistake tunnel, mountain etc.Though most of tunnel road is tortuous, shape differs, and sees still from its cross section to be approximately rectangle, therefore in certain distance, can be similar to as long-channel and handle.Than building channel and boats and ships passage, because the width that needs the tunnel of driving generally greater than height, therefore needs higher air-spray speed, thicker jet width when using air whirlpool plug at a distance from the cigarette system.Being example with certain tunnel below, the use in the tunnel describes to long-channel air whirlpool plug system, and is as shown in Figure 6.
Press the wide 7m in tunnel, high 4.5m design.High velocity air aspirating unit 1 that two are oppositely arranged and 2 length are 8m, and the side inlet width is about 0.9m.The air-spray flow velocity that high-velocity jets generating apparatus Q1, Q2 generate is about 30m/s.The air-spray spray angle of high-velocity jets generating apparatus Q1 is 80 °, and the air-spray spray angle that high-velocity jets generating apparatus Q2 generates is 75 °, and the width of puff prot P1, P2 is 0.3m.Smoke filtration net 3 is arranged respectively in high velocity air aspirating unit 1 and 2.Width is that two boundary layer bafflers 5 of 7.0m insert respectively in the long-channel inner top boundary layer baffler slot 4, to eliminate top and bottom because of the influence of boundary layer effect to the obstructing capacity of flue gas, guarantees at a distance from the cigarette effect.Air entry X1, X2 have closed-entry fender plate N1, N2 respectively.
By the design; Under high velocity air that is oppositely arranged and air-breathing circulation effect; Can form plug district, air whirlpool A in the long-channel; The flue gas incoming flow district C that this plug district, air whirlpool A can intercept the flue gas incoming flow in plug district, air whirlpool A one side effectively, making air whirlpool plug district A opposite side is place of safety D, is respectively air whirlpool plug transition region B between the flue gas incoming flow district of plug district, intermediate air whirlpool and its both sides and the place of safety.
Claims (7)
1. long-channel air whirlpool plug is at a distance from the cigarette system; Comprise air whirlpool plug formation system in long-channel facility and the long-channel; In the long-channel facility is normality air draught space; It is characterized in that plug formation system in air whirlpool is made up of two the high velocity air generating means that are oppositely arranged, high velocity air aspirating unit, high velocity air puff prot and high velocity air air entries in the long-channel; Under the action of high-speed airflow that is oppositely arranged, in long-channel, form forced draft vortex center, i.e. air whirlpool plug district; Through this plug district, air whirlpool the flue gas stream that takes place in the long-channel is intercepted the flue gas incoming flow district in one of which side long-channel, make the long-channel of plug district, air whirlpool opposite side be no flue gas place of safety.
2. long-channel air according to claim 1 whirlpool plug is at a distance from the cigarette system, it is characterized in that between flue gas incoming flow district and the place of safety of plug district, air whirlpool and its both sides be respectively that the zone of influence is filled in the air whirlpool.
3. long-channel air according to claim 1 whirlpool plug is at a distance from the cigarette system; Two high velocity air aspirating units that are oppositely arranged that it is characterized in that air whirlpool plug formation system in the long-channel are provided with along the long-channel two walls outside is corresponding; Two high velocity air generating means are separately positioned on diagonally opposing corner one end of two high velocity air aspirating units; The puff prot correspondence of two high velocity air generating means is located at the long-channel wall; Coming the angle between flow path direction and the long-channel wall with its relative flue gas is the air-flow jet angle, and puff prot sprays high velocity air by setting the air-flow jet angle; Air entry is located at the long-channel wall of two high velocity air aspirating unit other ends respectively.
4. long-channel air according to claim 3 whirlpool plug is at a distance from the cigarette system; The air-flow jet angle that it is characterized in that the puff prot of two high velocity air generating means of air whirlpool plug formation system in the long-channel is 10 °～90 °, and its puff prot width depends on the high velocity air generating means type in the concrete environment for use.
According to claim 1 or 3 described long-channel air whirlpools plug at a distance from the cigarette system, it is characterized in that being provided with the smoke filtration net in the high velocity air aspirating unit of two high velocity air aspirating units or nearly flue gas incoming flow air entry of air whirlpool plug formation system in the long-channel.
6. according to claim 1 or the separated cigarette system of 3 described long-channel air whirlpools plug, it is characterized in that the air entry of the high velocity air aspirating unit of air whirlpool plug formation system in the long-channel is provided with scalable reducing baffle plate.
7. long-channel air according to claim 1 whirlpool plug is at a distance from the cigarette system; The corresponding top and the bottom that it is characterized in that the long-channel outside the nearly flue gas incoming flow of high velocity air aspirating unit air entry are provided with boundary layer baffler slot, and the boundary layer baffler can be selected to insert in long-channel inner top and/or the bottom boundary baffler slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210035043 CN102526909B (en) | 2012-02-16 | 2012-02-16 | Long-channel air vortex plug smoke isolation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210035043 CN102526909B (en) | 2012-02-16 | 2012-02-16 | Long-channel air vortex plug smoke isolation system |
Publications (2)
| Publication Number | Publication Date |
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| CN102526909A true CN102526909A (en) | 2012-07-04 |
| CN102526909B CN102526909B (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210035043 Expired - Fee Related CN102526909B (en) | 2012-02-16 | 2012-02-16 | Long-channel air vortex plug smoke isolation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535314A (en) * | 2018-03-01 | 2018-09-14 | 淮阴工学院 | A kind of cold area's Railway Tunnel air curtain experimental rig and test method |
| CN109190246A (en) * | 2018-08-31 | 2019-01-11 | 淮阴工学院 | A kind of calculation method that cold area's railway tunnel air curtain heat preservation is theoretical |
| CN109197991A (en) * | 2018-10-15 | 2019-01-15 | 天津商业大学 | A kind of novel cold air stream vortex differential pressure precooling device |
| CN111214780A (en) * | 2020-03-05 | 2020-06-02 | 极度智慧展览(上海)有限公司 | Fireproof system of exhibition hall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2510091Y (en) * | 2001-12-30 | 2002-09-11 | 南京工业大学 | High-rise building fire fume-proof air curtain |
| CN1579580A (en) * | 2004-05-21 | 2005-02-16 | 南京工业大学 | Fire smoke-proof air curtain system with additional power |
| CN202569246U (en) * | 2012-02-16 | 2012-12-05 | 中国人民解放军海军工程大学 | Air vortex plug smoke-baffling system with long passage |
-
2012
- 2012-02-16 CN CN 201210035043 patent/CN102526909B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2510091Y (en) * | 2001-12-30 | 2002-09-11 | 南京工业大学 | High-rise building fire fume-proof air curtain |
| CN1579580A (en) * | 2004-05-21 | 2005-02-16 | 南京工业大学 | Fire smoke-proof air curtain system with additional power |
| CN202569246U (en) * | 2012-02-16 | 2012-12-05 | 中国人民解放军海军工程大学 | Air vortex plug smoke-baffling system with long passage |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535314A (en) * | 2018-03-01 | 2018-09-14 | 淮阴工学院 | A kind of cold area's Railway Tunnel air curtain experimental rig and test method |
| CN109190246A (en) * | 2018-08-31 | 2019-01-11 | 淮阴工学院 | A kind of calculation method that cold area's railway tunnel air curtain heat preservation is theoretical |
| CN109190246B (en) * | 2018-08-31 | 2023-03-10 | 淮阴工学院 | Computing method for air curtain heat preservation theory of railway tunnel in cold region |
| CN109197991A (en) * | 2018-10-15 | 2019-01-15 | 天津商业大学 | A kind of novel cold air stream vortex differential pressure precooling device |
| CN111214780A (en) * | 2020-03-05 | 2020-06-02 | 极度智慧展览(上海)有限公司 | Fireproof system of exhibition hall |
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| Publication number | Publication date |
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| CN102526909B (en) | 2013-12-18 |
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