CN103660033A - Air heat exchange device and air heat exchange system thereof - Google Patents
Air heat exchange device and air heat exchange system thereof Download PDFInfo
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- CN103660033A CN103660033A CN201310656207.XA CN201310656207A CN103660033A CN 103660033 A CN103660033 A CN 103660033A CN 201310656207 A CN201310656207 A CN 201310656207A CN 103660033 A CN103660033 A CN 103660033A
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- air
- heat exchange
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- casing
- steam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
- B28C7/0023—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust by heating or cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an air heat exchange device and an air heat exchange system thereof. The air heat exchange device comprises a box, the box comprises a steam snake-shaped array pipe coiled in the box, and the steam snake-shaped array pipe comprises a steam inlet and a condensed water outlet both stretching out of the box; the box also comprises a liquid ammonia snake-shaped array pipe coiled in the box, and the liquid ammonia snake-shaped array pipe comprises a liquid ammonia inlet and a liquid ammonia outlet both stretching out of the box; and the top of the box is provided with an air inlet and the bottom of the box is provided with an air outlet. According to the technical scheme, compared with the technology that a heating array pipe is inbuilt in a stock bin for indirectly heating aggregates, the new technology of heating the aggregates by wind is developed. The new approach capable of cooling the aggregates and heating the aggregates in the aggregate stock bin is realized, so that the arrangement is relatively flexible and relatively compact, the phenomena are solved that the stock bin is small in space, the flow of the aggregates is obstructed, the array pipes are broken by the aggregates and the like because the heating array pipe is inbuilt in an aggregate pile (or stock bin) in conventional projects, and the disadvantages of low heat transfer efficiency and low work efficiency are solved.
Description
Technical field
The invention belongs to the auxiliary enterprise of Construction of Hydropower Engineering technical field, be specifically related to a kind of heat exchange device for air and air heat exchanging system thereof.The present invention is mainly used in has pre-cold-peace preheating requirement to mixing and stirring concrete machine outlet, need to carry out air-cooled, wind-heat to aggregate, utilizes it to realize a kind of novel device cooling to air or heating.
Background technology
(1) be positioned at the power station of severe cold area, dam concrete has been built temperature requirements, Summer High-Temperature Times has precooling temperature requirements to mixing and stirring concrete outlet temperature, and there is preheating temperature requirements the winter low temperature phase to concrete outlet temperature, need to carry out cooling or heating to concrete coarse aggregate.
(2) mix and stir concrete machine outlet precooling temperature control measures, air-cooling aggregate is from the three gorges hydropower plant engineering development, the temperature control measures of at that time finished product coarse aggregate being taked is that coarse aggregate is divided in each storehouse of air-cooled feed bin by grating, cold wind carries out heat exchange with aggregate from bottom to top in feed bin, to reach the effect of aggregate cooling, wherein the generation of cold air is to carry out heat exchange formation by comb and the fin evaporation endothermic of ammoniacal liquor in aerial cooler.
(3) in the situation that mixing and stirring concrete outlet temperature and having preheating temperature requirements, need to heat aggregate.Engineering was to take to bury heating calancria underground in aggregate heap (storehouse) in the past, and in pipeline, logical steam carrys out indirect aggregate.For steam indirect aggregate, heat transfer coefficient is less, for guaranteeing necessary heat release area, needs the water back of a greater number.In addition, the Thermal Equipment that some thermometrics use and the supporting rod that fixedly heating calancria is used also will be installed in feed bin, these equipment and rod member have occupied some spaces of feed bin.Particularly, in the especially big stone of heating particle diameter 80mm～150mm and the higher feed bin of aggregate heating-up temperature, the ratio in its occupied feed bin space is larger, the mobile inhibition that plays to aggregate.This kind of aggregate heating process heat transfer is inhomogeneous, and heat transfer efficiency is low, and maintenance is inconvenient.
(4) in aggregate heap (storehouse), bury steam heating calandria underground, be in operation and easily by the aggregate of warehouse entry, smashed, cause condensate water outflow, the heating of maintenance period need stop, and aggregate heap (storehouse) easily freezes phenomenon.
Summary of the invention
The object of this invention is to provide a kind of heat exchange device for air and air heat exchanging system thereof, by the present invention, be achieved as follows two objects:
(1) realize the cooling and air heat of air, utilize in fact now logical cold wind in feed bin to reduce aggregate temperature, or logical Hot-blast Heating aggregate, start air cooling and heating two-way function, realization not only can cooling aggregate in aggregate bin but also new way that can hot aggregates, made to arrange more flexible, compacter.
(2) solving engineering in the past takes to bury heat(ing) coil underground in aggregate heap (storehouse), the Thermal Equipment that some thermometrics use and the supporting rod that fixedly heating calancria is used also will be installed to heat to aggregate, caused the occupying of feed bin space, and the mobile inhibition that played to aggregate; And this kind of aggregate heating process heat transfer is inhomogeneous, heat transfer efficiency is low; In aggregate heap (storehouse), bury steam heating calandria underground, be in operation and easily by the aggregate of warehouse entry, smashed, cause condensate water outflow, the heating of maintenance period need stop, the phenomenon that aggregate heap (storehouse) easily freezes.
For this reason, the invention provides a kind of heat exchange device for air, comprise casing, described casing comprises the snakelike comb of logical steam coiling in casing, and the logical snakelike comb of steam comprises steam inlet and the condensate water outlet of stretching out outside casing; Described casing also comprises the snakelike comb of logical ammoniacal liquor coiling in casing, and the logical snakelike comb of ammoniacal liquor comprises ammoniacal liquor entrance and the ammonia vapor outlet stretching out outside casing; Casing upper end has air inlet, and lower end has heat exchange air outlet.
The caliber size scope of the snakelike comb of above-mentioned logical steam and the snakelike comb of logical ammoniacal liquor is ф 25mm～ф 38mm.
The caliber size of the snakelike comb of above-mentioned logical steam and the snakelike comb of logical ammoniacal liquor is: ф 32mm.
Total tube bundle of the snakelike comb of above-mentioned logical steam and the snakelike comb of logical ammoniacal liquor is arranged and is: 18 every layer.
The snakelike comb of above-mentioned logical steam and the snakelike comb of logical ammoniacal liquor are 18 layers.
Above-mentioned stating on the logical snakelike comb of steam and the snakelike comb of logical ammoniacal liquor overlapped and had ф 96mm aluminium fin or steel fin.
Above-mentioned casing also comprises the wash tub pipe that is positioned at the logical snakelike comb of steam and the snakelike comb of logical ammoniacal liquor top of being located at its inner tip, and wash tub pipe entrance stretches out outside casing, and the bottom of casing is provided with blowdown outlet.
The snakelike comb of above-mentioned logical steam is positioned at the top position of the logical snakelike comb of ammoniacal liquor.
A kind of air heat exchanging system that comprises above-mentioned heat exchange device for air, comprise heat exchange device for air, aggregate bin, centrifugal blower, the first air channel and the second air channel, the heat exchange air outlet of the casing of described heat exchange device for air is connected with the air intake vent of centrifugal blower, centrifugal fan air outlet is connected with aggregate bin air intake vent by the first air channel, and aggregate bin air outlet is connected with the casing air inlet of heat exchange device for air by the second air channel.
Beneficial effect of the present invention: this heat exchange device for air provided by the invention, comprise casing, described casing comprises the snakelike comb of logical steam coiling in casing, the logical snakelike comb of steam comprises steam inlet and the condensate water outlet of stretching out outside casing; Described casing also comprises the snakelike comb of logical ammoniacal liquor coiling in casing, and the logical snakelike comb of ammoniacal liquor comprises ammoniacal liquor entrance and the ammonia vapor outlet stretching out outside casing; Casing upper end has air inlet, and lower end has heat exchange air outlet.This heat exchange device for air provided by the invention, arranges independently snakelike heat radiation comb of two covers, and a set of is that the logical snakelike comb of steam is realized air heat, a set of for the logical snakelike comb of ammoniacal liquor, realizes air cooling by ammoniacal liquor evaporation endothermic.Utilize in fact and in feed bin, lead to Hot-blast Heating aggregate now, or logical cold wind reduces aggregate temperature.With respect to bury heat(ing) coil indirect aggregate underground in feed bin, started wind-heat aggregate new technology, the present invention passes into the technology arrangement of Hot-blast Heating aggregate in feed bin more can save space, improves utilization efficiency of heat energy; Started the cooling and heating two-way function of air, realized in aggregate bin not only the new way of can cooling aggregate but also can hot aggregates, made to arrange more flexible, compacter.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is elevational schematic view of the present invention.
Fig. 2 is the application principle figure of air heat exchanging system.
Description of reference numerals: 1, sealing steel casing; 2, the logical snakelike comb of steam; 3, the logical snakelike comb of ammoniacal liquor; 4, casing air inlet; 5, centrifugal fan air outlet; 6, steam inlet; 7, condensate water outlet; 8, wash tub pipe entrance; 9, ammoniacal liquor entrance; 10, ammonia vapor outlet; 11, blowdown outlet; 12, the first air channel; 13, heat exchange device for air; 14, centrifugal blower; 15, aggregate bin; 16, heat exchange zone; 17, cold exchange area; 18, the second air channel; 19, aggregate bin air intake vent; 20, aggregate bin air outlet.
The specific embodiment
A kind of heat exchange device for air as shown in Figure 1, comprises casing 1, and casing 1 comprises the snakelike comb 2 of the logical steam coiling in casing, and the logical snakelike comb 2 of steam comprises steam inlet 6 and the condensate water outlet 7 of stretching out outside casing; Described casing 1 also comprises the snakelike comb 3 of the logical ammoniacal liquor coiling in casing 1, and the logical snakelike comb 3 of ammoniacal liquor comprises ammoniacal liquor entrance 9 and the ammonia vapor outlet 10 stretching out outside casing 1; Casing 1 upper end has air inlet 4, and lower end has heat exchange air outlet.This heat exchange device for air is in airtight steel tank body space, space is divided into heat exchange zone 16 and 17Liang Ge district, cold exchange area, heat exchange zone 16 is provided with independently snakelike comb, outside closed box, side elevation is provided with steam access port and condensate water outlet, steam is passed into snakelike comb and discharge heat energy, carry out heat cycles air (being formed for air circulating system by aggregate bin, heat exchange device for air, centrifugal blower and air channel).Steam-out (SO) enters the snakelike comb of steam from steam inlet, and by the external heat release of snakelike comb, after circulated air heat exchange, air themperature raises, and becomes condensate water and discharge from condensate water outlet after steam heat release.Steam is by heat radiation comb indirect circulated air (being hot blast).This heat exchange device for air heat exchange zone is simple in structure, and heating agent adopts steam, and the thermal efficiency is high.For between air cooling zone, be also provided with independently snakelike comb, outside closed box, side elevation is provided with ammoniacal liquor access port and ammonia back-steam mouth, ammoniacal liquor is passed into the snakelike comb evaporation in bottom and absorb heat, cool cycles air.External low-temp low-pressure ammoniacal liquor enters the snakelike comb of ammoniacal liquor from ammoniacal liquor entrance, by coiled pipe, absorbs air heat, and after circulated air heat exchange, air themperature reduces, and ammoniacal liquor heat absorption vaporization, discharges and turn back to refrigeration system from ammonia vapor outlet.As broad as long with conventional aerial cooler between air cooling zone, in this device, using it as a part, between air cooling zone, play air cooled effect.The present embodiment is combined in air heat district and air cooling zone in a steel casing, and air carries out heat exchange with heat radiation comb therein, thereby reaches heating or cooling effect.
The caliber size scope of the logical snakelike comb 2 of steam and the snakelike comb 3 of logical ammoniacal liquor is ф 25mm～ф 38mm.The caliber size of the logical snakelike comb 2 of steam and the snakelike comb 3 of logical ammoniacal liquor is: ф 32mm.Total tube bundle of the logical snakelike comb 2 of steam and the snakelike comb 3 of logical ammoniacal liquor is arranged and is: 18 every layer.The logical snakelike comb 2 of steam and the snakelike comb 3 of logical ammoniacal liquor are 18 layers.The pipeline number of plies and caliber size concrete in engineering reality are determined according to the required heat exchange area of heat exchange.
On the logical snakelike comb 2 of steam and the snakelike comb 3 of logical ammoniacal liquor, cover has ф 96mm aluminium fin or steel fin.Increase the heat exchange area that aluminium fin or steel fin can increase snakelike comb, improve heat exchanger effectiveness.
Casing 1 also comprises the wash tub pipe of being located at the logical snakelike comb 2 of steam of being positioned at of its inner tip and the snakelike comb of logical ammoniacal liquor 3 tops, and wash tub pipe entrance 8 stretches out outside casing, and the bottom of casing 1 is provided with blowdown outlet 11.Heat exchange device for air is in service, the easily frosting after operation certain hour of snakelike comb outer surface, and due to circulation wind action, unavoidably the dust of aggregate surface in feed bin is brought into, be attached on snakelike comb and fin, affect heat exchanger effectiveness, in order to improve heat transfer efficiency, above comb, arrange the wash tub pipe that one deck can be to its flushing, open wash tub pipe, with high pressure water washing comb surface dust and frosting, sewage is discharged from bottom half blowdown outlet.
The logical snakelike comb 2 of steam is positioned at the top position of the logical snakelike comb 3 of ammoniacal liquor.
The application principle figure of a kind of air heat exchanging system that comprises described heat exchange device for air 13 as shown in Figure 2, comprise heat exchange device for air 13, aggregate bin 15, centrifugal blower 14, the first air channel 12 and the second air channel 18, the heat exchange air outlet of the casing 1 of heat exchange device for air 13 is connected with the air intake vent of centrifugal blower 14, centrifugal fan air outlet 5 is connected with aggregate bin air intake vent 19 by the first air channel 12, and aggregate bin air outlet 20 is connected with the casing air inlet 4 of heat exchange device for air 13 by the second air channel 18.The circulation of air heat exchanging system is centrifugal blower for wind-power, and wind pressurizes by centrifugal blower, through air outlet, air channel, passes the aggregate bin bed of material, enters air inlet, heat exchange device for air through air channel, gets back to centrifugal blower suction side.Circulation air feed carries out heat exchange with the heat radiation comb of the thermal treatment zone in sealing steel casing, or carries out heat exchange with cooling zone refrigerating battery, realize to the object of hot wind supply in aggregate bin or cold wind, thus heating or reduce the aggregate temperature in feed bin.Power section and air channel in summer, winter air circulation adopt a set of equipment configuration, can improve the dischargeable capacity in feed bin, save batching plant platform space, reduce the maintenance load of preheating facility.
Therefore, this heat exchange device for air provided by the invention, arranges independently snakelike heat radiation comb of two covers, and a set of is that the logical snakelike comb of steam is realized air heat, a set of for the logical snakelike comb of ammoniacal liquor, realizes air cooling by ammoniacal liquor evaporation endothermic.Utilize in fact and in feed bin, lead to Hot-blast Heating aggregate now, or logical cold wind reduces aggregate temperature.With respect to bury heating calancria indirect aggregate underground in feed bin, started wind-heat aggregate new technology, the present invention passes into the technology arrangement of Hot-blast Heating aggregate in feed bin more can save space, improves utilization efficiency of heat energy; Started the cooling and heating two-way function of air, realized in aggregate bin not only the new way of can cooling aggregate but also can hot aggregates, made to arrange more flexible, compacter.
More than exemplifying is only to illustrate of the present invention, does not form the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention all belongs to protection scope of the present invention.
Claims (9)
1. a heat exchange device for air, comprise casing (1), it is characterized in that: described casing (1) comprises the snakelike comb of logical steam (2) coiling in casing, the logical snakelike comb of steam (2) comprises steam inlet (6) and the condensate water outlet (7) of stretching out outside casing; Described casing (1) also comprises the snakelike comb of logical ammoniacal liquor (3) coiling in casing (1), and the logical snakelike comb of ammoniacal liquor (3) comprises ammoniacal liquor entrance (9) and the ammonia vapor outlet (10) stretching out outside casing (1); Casing (1) upper end has air inlet (4), and lower end has heat exchange air outlet.
2. a kind of heat exchange device for air as claimed in claim 1, is characterized in that: the caliber size scope of the snakelike comb of described logical steam (2) and the snakelike comb of logical ammoniacal liquor (3) is ф 25mm～ф 38mm.
3. a kind of heat exchange device for air as claimed in claim 2, is characterized in that: the caliber size of the snakelike comb of described logical steam (2) and the snakelike comb of logical ammoniacal liquor (3) is: ф 32mm.
4. a kind of heat exchange device for air as claimed in claim 1, is characterized in that: total tube bundle of the snakelike comb of described logical steam (2) and the snakelike comb of logical ammoniacal liquor (3) is arranged and is: 18 every layer.
5. a kind of heat exchange device for air as claimed in claim 4, is characterized in that: the snakelike comb of described logical steam (2) and the snakelike comb of logical ammoniacal liquor (3) are 18 layers.
6. a kind of heat exchange device for air as claimed in claim 1, is characterized in that: the upper cover of the snakelike comb of described logical steam (2) and the snakelike comb of logical ammoniacal liquor (3) has ф 96mm aluminium fin or steel fin.
7. the heat exchange device for air as described in arbitrary claim in claim 1 to 6, it is characterized in that: described casing (1) also comprises the wash tub pipe of being located at the logical snakelike comb of steam (2) of being positioned at of its inner tip and the snakelike comb of logical ammoniacal liquor (3) top, the wash tub pipe entrance (8) of wash tub pipe stretches out outside casing, and the bottom of casing (1) is provided with blowdown outlet (11).
8. a kind of heat exchange device for air as claimed in claim 1, is characterized in that: the snakelike comb of described logical steam (2) is positioned at the top position of the logical snakelike comb of ammoniacal liquor (3).
9. an air heat exchanging system that comprises heat exchange device for air described in claim 1, it is characterized in that: comprise heat exchange device for air (13), aggregate bin (15), centrifugal blower (14), the first air channel (12) and the second air channel (18), the heat exchange air outlet of the casing (1) of described heat exchange device for air (13) is connected with the air intake vent of centrifugal blower (14), centrifugal fan air outlet (5) is connected with aggregate bin air intake vent (19) by the first air channel (12), aggregate bin air outlet (20) is connected with the casing air inlet (4) of heat exchange device for air (13) by the second air channel (18).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656207.XA CN103660033B (en) | 2013-12-09 | 2013-12-09 | A kind of heat exchange device for air and air heat exchanging system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310656207.XA CN103660033B (en) | 2013-12-09 | 2013-12-09 | A kind of heat exchange device for air and air heat exchanging system thereof |
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| CN103660033A true CN103660033A (en) | 2014-03-26 |
| CN103660033B CN103660033B (en) | 2016-02-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538620A (en) * | 2017-10-19 | 2018-01-05 | 福建雪人股份有限公司 | A kind of aggregate aerial cooler |
| CN108839966A (en) * | 2018-07-26 | 2018-11-20 | 中国电建集团成都勘测设计研究院有限公司 | Heating and cooling system for sandstone aggregate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11114940A (en) * | 1997-10-13 | 1999-04-27 | Kensetsusho Kinkichihou Kensetsukyoku | Aggregate cooling device |
| CN102756426A (en) * | 2012-07-06 | 2012-10-31 | 葛洲坝集团第五工程有限公司 | Integrated concrete aggregate pre-cooling and pre-heating device as well as pre-cooling and pre-heating method |
| CN203636991U (en) * | 2013-12-09 | 2014-06-11 | 中国水电顾问集团西北勘测设计研究院有限公司 | Air heat-exchanging device and air heat-exchanging system thereof |
-
2013
- 2013-12-09 CN CN201310656207.XA patent/CN103660033B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11114940A (en) * | 1997-10-13 | 1999-04-27 | Kensetsusho Kinkichihou Kensetsukyoku | Aggregate cooling device |
| CN102756426A (en) * | 2012-07-06 | 2012-10-31 | 葛洲坝集团第五工程有限公司 | Integrated concrete aggregate pre-cooling and pre-heating device as well as pre-cooling and pre-heating method |
| CN203636991U (en) * | 2013-12-09 | 2014-06-11 | 中国水电顾问集团西北勘测设计研究院有限公司 | Air heat-exchanging device and air heat-exchanging system thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538620A (en) * | 2017-10-19 | 2018-01-05 | 福建雪人股份有限公司 | A kind of aggregate aerial cooler |
| CN108839966A (en) * | 2018-07-26 | 2018-11-20 | 中国电建集团成都勘测设计研究院有限公司 | Heating and cooling system for sandstone aggregate |
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| CN103660033B (en) | 2016-02-03 |
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