CN101025340A - Multi-stage cooling middle liquid-separation air condensator - Google Patents
Multi-stage cooling middle liquid-separation air condensator Download PDFInfo
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- CN101025340A CN101025340A CN 200710064952 CN200710064952A CN101025340A CN 101025340 A CN101025340 A CN 101025340A CN 200710064952 CN200710064952 CN 200710064952 CN 200710064952 A CN200710064952 A CN 200710064952A CN 101025340 A CN101025340 A CN 101025340A
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- 238000001816 cooling Methods 0.000 title claims description 15
- 238000000926 separation method Methods 0.000 title description 8
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- 239000012530 fluid Substances 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 18
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- 230000007423 decrease Effects 0.000 claims description 4
- 238000009833 condensation Methods 0.000 abstract description 33
- 230000005494 condensation Effects 0.000 abstract description 31
- 238000012546 transfer Methods 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 6
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- 238000005057 refrigeration Methods 0.000 abstract description 4
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- 238000013461 design Methods 0.000 description 5
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- 230000005514 two-phase flow Effects 0.000 description 3
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- 239000000463 material Substances 0.000 description 1
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Abstract
Multiple-refrigeration Middle-delivery aerial condenser belongs to thermodynamic equipment technology domain. It composes of multi stages, and every stage is connected by the channels; every stage has two flow stages in which the steam floats to opposite direction; the air input is connected with the first channel , and the first channel is connected with the second channel by a row of parallel distribution heat exchange tube of the first stage; the second channel is connected with the heat exchange tube of next stage; apostrophe ,until get to the last channel; there are fins set out of the heat exchange tube; the shell is set out of the heat exchange tube and fins. The steam is put into the heat exchange tube of the first stage to refrigerate through the steam input and the first channel, and the air-liquid mixture flows into channel, and then the liquid and the air are separated; the steam gets into the heat exchange tube of next stage. This invention is suitable for large power engineering refrigeration, and it has efficient condensation capacity and large coefficient of heat transmission; the heat transfer area of the equipment is made use of sufficiently and efficiently; the fabric is flexible and smart, the applicability of the space is high.
Description
Technical field
The present invention relates to the middle liquid division type air of a kind of multistage cooling cooling condensation heat exchanger, belong to the Thermal Equipment technical field.
Background technology
Aerial condenser is a class Thermal Equipment, is widely used in industries such as energy resource system, power engineering, chemical industry and petrochemical industry, such as firepower power station aerial condenser, Air-conditioning Engineering and refrigeration system air-cooled condenser or the like.Figure 1 shows that traditional aerial condenser that is applied to the power station, critical piece is finned-tube bundle and blower fan.As Fig. 1, figure (a) is a conventional air condenser front view; Figure (b) is a vertical view.Wherein, 100-tube bank, 200-fin, 300-blower fan, 400-steam inlet, 500-condensate outlet, 600-plate washer.The conventional air condenser relies on the heat convection of air outside pipe, and cooling fluid steam is at in-tube condensation.The condenser pipe inlet of this Air-cooled Condenser is pure steam, is neat liquid substantially through full pipe range condensation outlet, realizes whole condensations.In the pipe in the condensation heat transfer, along with the wall condensation water that carries out of condensation progressively increases, film forming has hindered contacting of steam and wall subsequently, is the main thermal resistance place of condensation heat transfer.Liquid film progressive additive in the condensation process, the complicated two phase flow that progressively increases for liquid in the quite long afterwards tube side, thermal resistance increases gradually, the serious variation of condensation effect; While, quantity of steam reduced gradually along with steam condenses, and steam flow rate obviously descends in the pipe, and condensation effect decreases sharply, and the coefficient of heat transfer reduces; The flow process condensation process has also caused complicated biphase gas and liquid flow in the single pipe, to the regulation and control of system's operation stability, flow resistance and system etc., very adverse influence is arranged all.Air side, because in-tube condensation heat exchange thermal resistance increases, the outer tube wall temperature descends, and causes the utilization rate of fin to descend.For solving the problem of above-mentioned existence, conventional air cooled condenser to be strengthening the demand that heat exchange area satisfies the heat exchange amount, and volume, weight are bigger, and making and operating cost height.
Summary of the invention
The invention provides a kind of multistage cooling, intermediate section liquid air gas condenser that is applicable to large-sized power engineering and relevant practical application, comprise the choose reasonable utilization condense the application principle of form, two-phase flow pattern and heat-transfer mechanism, steam at different levels flow is connected with distribution design technology, inter-stage and separatory technology, optimized integral structure design arrangement and header in prevent the leakage fluid dram air seal set of gas phase leakage.This aerial condenser can utilize structural condition realization the best to condense and the heat transfer form automatically, and the equipment of assurance has high-efficiency condensation ability, high heat transfer coefficient; Keep vapo(u)rous temperature in the more approaching pipe of condensing heat-exchanging pipe and fin root, obtain higher air heat radiation and drive the temperature difference; Little heat exchanger volume and metal consumption; The whole heat transfer area of equipment obtains fully and efficient the utilization.Designed not at the same level and the formed different structure form of combination connecting mode inter-stage, proved absolutely that to have showed the combination of this kind condenser ingenious flexibly, characteristics such as the space applicability is strong.
Fig. 2 is a liquid separating air condenser in the middle of a kind of multistage cooling, is applicable to the cooling of large-sized power engineering, by a plurality of grades of A, B ... form, can adjust progression as required, what this figure showed is the middle liquid separating air condenser with two-stage cooling.The level inter-stage has the header transmission steam that communicates, and except that the first order comprises air intake 1, condensate outlet 7, all the other grades all only contain header 2-j, fin 3, heat exchanger tube 4, leakage fluid dram air seal set 5, discharging tube 6 and shell 8 (not essential as requested).
The header of installing by two ends (2-j) not at the same level joins; Each grade header is equipped with discharging tube (6) and leakage fluid dram air seal set (5); Every grade of condensation heat transfer pipe number successively decreases successively from the inlet first order, in order to guarantee integrally-built compactedness, a single-stage module all has two process levels that steam flow is opposite, so single process series connection condenser steam flow level is generally even numbers, whole steam flow is " " shape (horizontal tube) or " U " shape (vertical pipe type), forms flow process turn back (being the single header of turning back herein) at middle two inter-stages;
Air intake (1) connects the 1st header (2-1), and the 1st header communicates with the 2nd header by one group of parallel arrangement heat exchanger tube (4) of first order A; Steam enters the heat exchanger tube (4) of next stage B by the 2nd header that links to each other with A, B two-stage, and the single header 2-k that turns back up to entering afterbody makes steam oppositely flow into condensations at different levels successively, up to entering last header (2-i);
The outer fin (3) that is equipped with of heat exchanger tube (4);
Heat exchanger tube (4) and fin (3) be outer installs shell (8) (look require not essential).
After steam enters first header (2-1) by air intake (1), sent into first order heat exchanger tube (4) equably and carried out condensation, liquid-vapor mixture flows into the header (2-2) that first second level links to each other, in header, realize vapor-liquid separation automatically, liquid relies on gravity to get rid of by leakage fluid dram, and the air seal set of leakage fluid dram has guaranteed liquid and stoped steam to be discharged; Liquid is discharged through the discharging tube (8) of header bottom and is come together in Guan Zhongjing leakage fluid dram (7) discharge, and steam then enters the next stage heat exchanger tube; Descend devaporation by at different levels and reverse according to this through the single header of turning back, adverse current finally enters afterbody header (2-i) by at different levels once more, and steam is by whole condensations, condensate liquid and each header condensate liquid all flow in the condensate liquid manifold trunk (9), finally flow out through condensate outlet (7).The heat exchanger tube (4) of air side air transversal flow with ribbing (3) is with steam in the condenser pipe.
The present invention utilizes multistage steam condensation, middle vapor-liquid separation automatically and discharge opeing, concentrate and assemble condensate liquid and cross refrigeration technique, guarantees that each tube side all enters with pure steam and is cooled, and effectively reduces the thickness of liquid film in the condensation process and eliminates disadvantageous two-phase flow pattern; Make full use of short heat exchanger tube, make each tube side all can be in the short tube pearl or unsettled thin liquid film condenses, or by influence promotion liquid film unstability and the fracture of steam to liquid film, the streams shape that forms film condensation and dropwise condensation coexistence condenses, strengthen the film condensation heat transfer effect, improve condensation heat transfer coefficient in the pipe; Fin arranges that gentle fluidity can match, keep the outer fin base of pipes at different levels (or pipe outside wall surface) temperature and be in level much at one, effectively increase the driving temperature difference of air side convection heat transfer' heat-transfer by convection, thereby evenly, effectively utilize the air side fin, improve the utilization rate of fin, strengthen the pipe outside and conducted heat, improved the target of heat transfer coefficient; Utilize header to carry out steam branch journey, realize gas-liquid separation by air seal set, guarantee best discharge opeing effect, avoiding leak, phenomenon such as vapour or steam short circuit occurs; Finally, improved the performance of whole condensing heat exchanger by above-mentioned technology.Preliminary experiment and the analysis showed that compares with traditional condenser and saves material and can reach 30% or higher, reduced that condenser is made and the effect of operating cost.The present invention processes simply, and comparing with traditional condenser to increase any special processing technology.Simultaneously, can be according to the size of heat exchange amount increase and decrease progression, the requirement that can use different condensation loads, and can adjust the arrangement form of inter-stage according to the space, and structure is compact flexibly, and space adaptability is strong.
The present invention has two kinds of basic structure forms: vertical pipe type separatory and horizontal tube separatory.Technical in version and principle, the two is basic identical, the main difference point is: in order to guarantee the separatory effect, pipe and header junction are different, the horizontal tube pipe does not need to go deep into header inside, vertical pipe type will extend out to the inner certain-length of upper header, and being connected with lower collecting box does not need so.
On the combining form, the present invention has two kinds of basic models of series, parallel, and arrange according to the space and compound modes such as " axis covering of the fan formula ", " folding formula ", " V formula " that needs develop into by these two kinds of citation forms, " closed-loop and circular formula " can well adapt to different purposes and space structure requirement.
Description of drawings
Figure 1 shows that traditional aerial condenser that is applied to the power station.Wherein, figure (a) is a conventional air condenser front view; Figure (b) is a conventional air condenser vertical view.
Fig. 2 is the present invention's (series connection horizontal tube) front view.
Fig. 3 is the present invention's (series connection horizontal tube) vertical view.
Fig. 4 is a leakage fluid dram air seal set of the present invention.
Fig. 5 is the present invention's (series connection vertical pipe type) front view.
Fig. 6 is the present invention's (series connection vertical pipe type) upper end schematic diagram.
Fig. 7 is the present invention's (reverse steam flow horizontal tube in parallel) front view.
Fig. 8 is the present invention's (series connection horizontal tube " axis covering of the fan " integrated-type) front view.
Fig. 9 is the present invention's (series connection horizontal tube " V formula " integrated-type) front view.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing.
Fig. 2 is the present invention's (series connection horizontal tube) front view, wherein, and 1 air inlet, j header of 2-j, the single header of turning back of 2-k, last header of 2-i, 3 fins, 4 heat exchanger tubes, 5 leakage fluid dram air seal sets, 6 discharging tubes, 7 condensate outlets, 8 shells, 9 condensate liquid manifold trunks.Liquid separating air condenser in the middle of a kind of multistage cooling is applicable to the cooling of large-sized power engineering, by a plurality of grades of A, B ... form, can adjust progression as required, what this figure showed is the middle liquid separating air condenser with two-stage cooling.The level inter-stage has the header transmission steam that communicates, and except that the first order comprises air intake 1, condensate outlet 7, all the other grades all only contain header 2-j, fin 3, heat exchanger tube 4, leakage fluid dram air seal set 5, discharging tube 6 and shell 8 (not essential as requested); The header of installing by two ends (2-j) not at the same level joins; Air intake (1) connects the 1st header (2-1), and the 1st header communicates with the 2nd header by one group of parallel arrangement heat exchanger tube (4) of first order A; Steam enters the heat exchanger tube (4) of next stage B by the 2nd header that links to each other with A, B two-stage, and the single header 2-k that turns back up to entering afterbody makes steam oppositely flow into condensations at different levels successively, up to entering last header (2-i); Each grade header is equipped with discharging tube (6) and leakage fluid dram air seal set (5); Fin (3) is arranged outside the heat exchanger tube (4); Heat exchanger tube (4) and fin (3) be outer installs shell (8) (look require not essential).Can adjust progression as required, be the middle liquid separating air condenser with two-stage cooling shown in Fig. 2.
After steam enters first header (2-1) by air intake (1), sent into first order heat exchanger tube (4) equably and carried out condensation, liquid-vapor mixture flows into the header (2-2) that first second level links to each other, in header, realize vapor-liquid separation automatically, liquid relies on gravity to get rid of by leakage fluid dram, and the air seal set of leakage fluid dram has guaranteed liquid and stoped steam to be discharged; Liquid is discharged through the discharging tube (8) of header bottom and is come together in Guan Zhongjing leakage fluid dram (7) discharge, and steam then enters the next stage heat exchanger tube; Descend devaporation by at different levels and reverse according to this through the single header of turning back, adverse current finally enters afterbody header (2-i) by at different levels once more, and steam is by whole condensations, condensate liquid and each header condensate liquid all flow in the condensate liquid manifold trunk (9), finally flow out through condensate outlet (7).The heat exchanger tube (4) of air side air transversal flow with ribbing (3) is with steam in the condenser pipe.
Fig. 3 is the present invention's (series connection horizontal tube) vertical view, wherein, the 1st header of 1 air intake 2-1, the 2nd header of 2-2,8 shells; Air intake (1) links to each other with the 1st header (2-1); Link to each other with the 2nd (2-2) header by shell (8) lining heat exchanger tube;
The leakage fluid dram air seal set that Fig. 4 designs for the present invention is in order to prevent the suitable discharging tube leakage of gas phase in the gas-liquid separation process in the header.1 solid top cover, 2 porous core bodys, 3 discharging tube walls.
Fig. 5 is the present invention's (series connection vertical pipe type) front view, wherein, and 1 air inlet, j header of 2-j, the single header of turning back of 2-k, last header of 2-i, 3 fins, 4 heat exchanger tubes, 5 leakage fluid dram air seal sets, 6 discharging tubes, 7 condensate outlets, 8 shells (look require not essential).
The vertical pipe type separatory is identical on version and operation principle with the horizontal tube separatory, the main difference point is: in order to guarantee the separatory effect, the horizontal tube pipe does not need to go deep into header inside, and vertical pipe type will extend out to the inner certain-length of upper header, and being connected with lower collecting box does not need so.Vertical pipe type header topmost need not add discharging tube (6) and air seal set (5), and the header of lower end compiles condensate liquid by discharging tube and discharges.
Fig. 6 is the present invention's (series connection vertical pipe type) left end schematic diagram.Wherein, the 1st header of 1 air intake 2-1, j header of 2-j, the single header of turning back of 2-k, 8 shells.
Fig. 7 is the present invention's (reverse steam flow horizontal tube in parallel) front view, two path A and B about intraductal heat exchange existence parallel connection.Wherein, 1A is an A path air inlet, and 1B is a B path air inlet, 2-jA is j header of A path, 2-jB is j header of B path, and 2-iA is last header of A path, and 2-iB is last header of B path, 3 fins, 4 heat exchanger tubes, 5 leakage fluid dram air seal sets, 6 discharging tubes, 7 condensate outlets, 8 shells.It is similar with the horizontal of connecting with heat exchange mode to flow, after steam enters first header (2-1A or 2-1B) by air intake (1A or 1B), the heat exchanger tube (4) of being sent into the first order uniformly carries out condensation, liquid-vapor mixture flows into the header (2-2A or 2-2B) of the heat exchanger tube other end, realizes vapor-liquid separation by the leakage fluid dram air seal set; Liquid is discharged through the discharging tube (8) of header bottom and is come together in Guan Zhongjing leakage fluid dram (7) discharge, and steam then enters the next stage heat exchanger tube; Going down with this enters afterbody header (2-iA or 2-iB) through appropriate stage-number, and steam comes together in the pipe by whole condensations, finally flows out through condensate outlet (7).The heat exchanger tube (4) of air side air transversal flow with ribbing (3) is with steam in the condenser pipe.This design is general require and a di-condensation flow process operational factor and load etc. all the same.
Equally, for the parallel standpipe form that also exists, it is identical on version and operation principle with the horizontal tube separatory, and the main difference point is: from top to bottom steam flow stream top side header only possesses water conservancy diversion and distributing steam function, need not add discharging tube and air seal set; Steam flow can not be provided with the top side header from the bottom to top, does not also have a separatory discharge opeing function if having; In order to guarantee the separatory effect, the horizontal tube pipe does not need to go deep into header inside, and vertical pipe type will extend out to the inner certain-length of upper header, and being connected with lower collecting box does not need so.Header bottom all will compile condensate liquid and discharge by discharging tube.This design is general require and a di-condensation flow process operational factor and load etc. all the same.
Fig. 8 is the present invention's (series connection horizontal tube " axis covering of the fan " integrated-type) front view.Is that axis combines by liquid separating air condenser (Fig. 2) in the middle of the multistage cooling of some series connection horizontal tube with tube fluid baffling place header, and public this header carries out gas-liquid separation, discharge opeing, gas phase re-allocation process.This figure A, B, C are three series connection horizontal tube condenser unit, public header (2-j).
Fig. 9 is the present invention's (series connection horizontal tube " V formula " integrated-type) front view.
Based on this, also can further form the middle liquid separating air condenser of the multistage cooling of integrated-types such as horizontal tube in parallel " axis covering of the fan ", " folding formula ", " V formula ", " closed-loop and circular formula ".
The above is embodiments of the invention, and protection scope of the present invention is not limited to this, anyly all belongs within the effective protection domain of the present invention based on the equivalent transformation on the technical solution of the present invention.
Claims (1)
1, liquid separating air condenser in the middle of the multistage cooling is characterized in that this condenser is made up of multistage; The level inter-stage has the header transmission steam that communicates;
Except that the first order comprised air intake (1), condensate outlet (7), all the other levels all only contained header (2-j), fin (3), heat exchanger tube (4), leakage fluid dram air seal set (5), discharging tube (6) and shell (8);
The header of installing by two ends (2-j) not at the same level joins; Each grade header is equipped with discharging tube (6) and leakage fluid dram air seal set (5); Every grade of heat exchanger tube number successively decreases successively from the inlet first order;
Every grade has two process levels that steam flow is opposite;
Air intake (1) connects the 1st header (2-1), and the 1st header communicates with the 2nd header by one group of parallel arrangement heat exchanger tube (4) of the first order; The 2nd header connects the next stage heat exchanger tube; , going down with this, the single header of turning back (2-k) up to connecting afterbody oppositely connects heat exchanger tube ..., up to entering last header (2-i);
The outer fin (3) that is equipped with of heat exchanger tube (4);
The outer shell (8) of installing of heat exchanger tube (4) and fin (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200710064952XA CN100491871C (en) | 2007-03-30 | 2007-03-30 | Multi-stage cooling middle liquid-separation air condenser |
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| CNB200710064952XA CN100491871C (en) | 2007-03-30 | 2007-03-30 | Multi-stage cooling middle liquid-separation air condenser |
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| CN101025340A true CN101025340A (en) | 2007-08-29 |
| CN100491871C CN100491871C (en) | 2009-05-27 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009928A1 (en) * | 2007-07-18 | 2009-01-22 | Tsinghua University | Condensing and heat transferring method having automatic liquid dividing function and apparatus thereof |
| CN101539386B (en) * | 2009-04-03 | 2011-01-05 | 清华大学 | Vapor-liquid separation method of evaporator and evaporator |
| CN101504255B (en) * | 2009-03-02 | 2011-03-23 | 清华大学 | Vapor-liquid separation method for horizontal condenser and condenser |
| CN103063073A (en) * | 2012-12-28 | 2013-04-24 | 广东工业大学 | Liquid separating core and multi-stage cooling heat exchanger with liquid separating core |
| CN103335534A (en) * | 2013-06-09 | 2013-10-02 | 南通久信石墨科技开发有限公司 | Multi-layer efficient distilling condensation separating tower and mixed gas separating method thereof |
| CN103712494A (en) * | 2014-01-09 | 2014-04-09 | 缪志先 | Integral-box-shaped stacked heat exchanger with gas-liquid separation device |
| CN104132557A (en) * | 2014-07-30 | 2014-11-05 | 烟台珈群高效节能设备有限公司 | Intermediate liquid discharge type efficient condensation system |
| CN105080177A (en) * | 2015-09-14 | 2015-11-25 | 李永堂 | Efficient separation and vacuum condensation system for non-condensable gas |
| CN111373219A (en) * | 2017-11-07 | 2020-07-03 | 比利时斯派奇干式冷却公司 | Three-stage heat exchanger of air-cooled condenser |
| CN111617511A (en) * | 2020-06-08 | 2020-09-04 | 杭州碳明科技有限公司 | Condensing device |
| WO2021012936A1 (en) * | 2019-07-23 | 2021-01-28 | 李永堂 | Plate heat exchanger having flow-dividing plate path |
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| CN103225964B (en) * | 2013-05-06 | 2015-07-15 | 华北电力大学 | Air-cooling condenser with two sections of circular condensation finned tube bundles and induced air type axial-flow fan |
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- 2007-03-30 CN CNB200710064952XA patent/CN100491871C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009928A1 (en) * | 2007-07-18 | 2009-01-22 | Tsinghua University | Condensing and heat transferring method having automatic liquid dividing function and apparatus thereof |
| CN101504255B (en) * | 2009-03-02 | 2011-03-23 | 清华大学 | Vapor-liquid separation method for horizontal condenser and condenser |
| CN101539386B (en) * | 2009-04-03 | 2011-01-05 | 清华大学 | Vapor-liquid separation method of evaporator and evaporator |
| CN103063073B (en) * | 2012-12-28 | 2014-08-13 | 广东工业大学 | Liquid separating core and multi-stage cooling heat exchanger with liquid separating core |
| CN103063073A (en) * | 2012-12-28 | 2013-04-24 | 广东工业大学 | Liquid separating core and multi-stage cooling heat exchanger with liquid separating core |
| CN103335534A (en) * | 2013-06-09 | 2013-10-02 | 南通久信石墨科技开发有限公司 | Multi-layer efficient distilling condensation separating tower and mixed gas separating method thereof |
| CN103712494A (en) * | 2014-01-09 | 2014-04-09 | 缪志先 | Integral-box-shaped stacked heat exchanger with gas-liquid separation device |
| CN104132557A (en) * | 2014-07-30 | 2014-11-05 | 烟台珈群高效节能设备有限公司 | Intermediate liquid discharge type efficient condensation system |
| CN105080177A (en) * | 2015-09-14 | 2015-11-25 | 李永堂 | Efficient separation and vacuum condensation system for non-condensable gas |
| CN111373219A (en) * | 2017-11-07 | 2020-07-03 | 比利时斯派奇干式冷却公司 | Three-stage heat exchanger of air-cooled condenser |
| CN111373219B (en) * | 2017-11-07 | 2021-04-13 | 比利时斯派奇干式冷却公司 | Three-stage heat exchanger of air-cooled condenser |
| WO2021012936A1 (en) * | 2019-07-23 | 2021-01-28 | 李永堂 | Plate heat exchanger having flow-dividing plate path |
| CN111617511A (en) * | 2020-06-08 | 2020-09-04 | 杭州碳明科技有限公司 | Condensing device |
| CN111617511B (en) * | 2020-06-08 | 2022-05-03 | 杭州碳明科技有限公司 | Condensing device |
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| CN100491871C (en) | 2009-05-27 |
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