CN103983046B - The board-like full liquid generator of width passage and falling-film absorber and ammonia water absorption refrigerating machine - Google Patents
The board-like full liquid generator of width passage and falling-film absorber and ammonia water absorption refrigerating machine Download PDFInfo
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- CN103983046B CN103983046B CN201410251739.XA CN201410251739A CN103983046B CN 103983046 B CN103983046 B CN 103983046B CN 201410251739 A CN201410251739 A CN 201410251739A CN 103983046 B CN103983046 B CN 103983046B
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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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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Abstract
The board-like full liquid generator of a kind of width passage and falling-film absorber and ammonia water absorption refrigerating machine, utilize waste heat by the waste heat fat pipe of the board-like full liquid generator of width passage, heating concentrated ammonia liquor narrow passage adverse current and come concentrated ammonia liquor, produce gas-liquid mixture and enter gas-liquid separator in the lump, isolate after moisture ammonia is purified by segregator and be condensed into liquefied ammonia in plate-type condenser, liquefied ammonia is fed in ammonia tank; The heat exchanger tube neutralization that liquefied ammonia out enters into subcooler from ammonia tank supplies plate-type evaporator evaporation and forms cold ammonia after the plate-type evaporator further heat exchange of cold ammonia out, the concentrated ammonia liquor outlet header that the further heat exchange of liquefied ammonia entered in subcooler and heat exchanger tube of cold ammonia enters the board-like falling-film absorber bottom of width passage under differential pressure action rises along weak aqua ammonia narrow passage, cold ammonia is absorbed formation concentrated ammonia liquor from gas-liquid separator and through the weak aqua ammonia of solution heat exchanger cooling and is entered concentrated ammonia liquor tank, and is pumped into the board-like full liquid generator of width passage by solution pump.
Description
Technical field
The ammonia water absorption refrigerating machine adopting the board-like full liquid generator of width passage and the board-like falling-film absorber waste heat of width passage to drive, relates to Technique of Utilizing Waste Heat For Refrigeration field.
Background technology
Generator and the absorber of the ammonia water absorption refrigerating machine had now adopt traditional shell and tube exchanger, and manufacturing cost is high, and heat exchange efficiency is low, and refrigeration is slow, and it is slow to respond thermal source and cooling water change, the shortcomings such as volume is large.The full liquid generator of tradition ammonia water absorption refrigerating machine adopts shell-tube type structure, concentrated ammonia liquor is full of shell side side, waste heat walks tube side side, but the direction of the full liquid generator of concentrated ammonia liquor circulation shell-tube type and waste heat circulate, the direction of the full liquid generator of shell-tube type can not realize contrary completely, thus the heat exchange efficiency causing the full liquid generator of shell-tube type is low, add its heat exchange area and volume, manufacturing cost is high, also result in the phenomenon that the volume large concentrated ammonia liquor amount of shell side side is large, the concentrated ammonia liquor of waste-heat shell side side needs time long unit starting slow, when waste heat fluctuates, the temperature fluctuation of concentrated ammonia liquor is not obvious waits a moment unit response not in time.What the absorber of tradition ammonia water absorption refrigerating machine adopted is full liquid bubbling shell-tube type or falling liquid film shell-tube type, and the absorber heat exchanging efficiency of two kinds of structures is low, and heat exchange area volume is large, and manufacturing cost is high.
Summary of the invention
This programme object is the volume reducing existing ammoniacal liquor refrigeration machine, reduces manufacturing cost, improves heat exchange efficiency, improves cooling rate, improves unit to thermal source and the cooling water change speed of response.
This programme is achieved by the following technical measures: the board-like full liquid generator of a kind of width passage, it is characterized in that having 21 heat exchange plates to be welded and define that cross-sectional area does not wait and 10 waste heat fat pipes of alternate layout arranged side by side and 10 concentrated ammonia liquor narrow passages, total cross-sectional area of waste heat fat pipe is 10 times of total cross-sectional area of concentrated ammonia liquor narrow passage, waste heat fat pipe is communicated with waste heat import and waste heat outlet, waste heat import is arranged at the top of waste heat fat pipe, and waste heat outlet is arranged at the bottom of waste heat fat pipe; Concentrated ammonia liquor narrow passage is communicated with concentrated ammonia liquor import and gas-liquid mixture outlet; Concentrated ammonia liquor import is arranged at the bottom of concentrated ammonia liquor narrow passage, and gas-liquid mixture outlet is arranged at the top of concentrated ammonia liquor narrow passage; Pipeline before concentrated ammonia liquor import is provided with a unidirectional stop valve.Flow out from the outlet of bottom waste heat after the waste heat of large discharge enters waste heat fat pipe from top waste heat import, the concentrated ammonia liquor of low discharge is flowed out from the outlet of top gas-liquid mixture by after the waste-heat of waste heat fat pipe side formation gas-liquid mixture after the concentrated ammonia liquor inlet flow concentrated ammonia liquor narrow passage of bottom, and the direction that waste heat circulates in the board-like full liquid generator of width passage is completely contrary with the direction that concentrated ammonia liquor circulates.The setting of unidirectional stop valve makes concentrated ammonia liquor leniently enter the board-like bottom of expiring liquid generator of narrow passage, is full of each dense ammonia narrow passage and can not flows backwards, ensure that each narrow passage of concentrated ammonia liquor is full of concentrated ammonia liquor, prevent dry combustion method.
This programme also provides a kind of width passage board-like falling-film absorber, it is characterized in that by 11 heat exchange plates be welded define cross-sectional area not wait and 5 cooling water fat pipes of alternate layout arranged side by side and 5 weak aqua ammonia narrow passages, total cross-sectional area of cooling water fat pipe is 7 times of total cross-sectional area of weak aqua ammonia narrow passage; Cooling water fat pipe bottom is communicated with cooling water inlet, and cooling water fat pipe top is communicated with coolant outlet; Weak aqua ammonia narrow passage top is communicated with weak aqua ammonia import, and weak aqua ammonia narrow passage bottom is communicated with concentrated ammonia liquor outlet; The direction that cooling water circulates in the board-like falling-film absorber of width passage is completely contrary with the direction that weak aqua ammonia circulates.
The concrete feature of this programme also has, be positioned on the board-like falling-film absorber top of width passage above heat exchange plate and be provided with weak aqua ammonia import distribution case, the weak aqua ammonia distributor be connected with weak aqua ammonia import is provided with in weak aqua ammonia import distribution case inside, weak aqua ammonia distributor comprises 1 grid-type liquid distributor, the reverse V-shaped deflector of 1 cloth liquid dish and 5 opening angles 20 degree; Grid-type liquid distributor comprises 1 supervisor and is symmetrically distributed in 10 arms of supervisor both sides, and grid-type liquid distributor bottom is dispersed with 5 row liquid distributing holes uniformly, and weak aqua ammonia flows out from each liquid distributing hole uniformly; A cloth liquid dish is provided with in grid-type liquid distributor bottom, cloth liquid dish is provided with some cloth liquid dish liquid distributing holes, cloth liquid dish liquid distributing hole 2 is classified as 1 group, totally 10 row 5 groups, 2 row cloth liquid dish liquid distributing hole centre-to-centre spacing of each group are 4 millimeters, 5 row liquid distributing holes of grid-type liquid distributor bottom are in the positive top of 5 groups of cloth liquid dish liquid distributing hole longitudinal centre lines, and the weak aqua ammonia evenly flowed out from grid-type liquid distributor drops in cloth liquid dish uniformly, and weak aqua ammonia is flowed out uniformly by cloth liquid dish liquid distributing hole; 5 groups, cloth liquid dish bottom cloth liquid dish liquid distributing hole longitudinal centre line is welded with 5 reverse V-shaped deflectors that opening angle is 20 degree, two ends, 5 reverse V-shaped deflector bottoms to be deep in 5 weak aqua ammonia narrow passages 4 millimeters and each 1 millimeter of distance passage both sides, two ends heat exchange plate, the both sides of reverse V-shaped deflector are fallen into from the weak aqua ammonia of cloth liquid dish outflow, flow into uniformly on the heat exchange plate of weak aqua ammonia narrow passage both sides, flow out from top to bottom.
Cold ammonia enters from the bottom of weak aqua ammonia narrow passage, and cold ammonia rises to be absorbed by the top-down weak aqua ammonia of weak aqua ammonia narrow passage along weak aqua ammonia narrow passage and forms concentrated ammonia liquor, absorbs the heat the produced aquaporin cooling water from bottom to top that is cooled and takes away.
This programme also provides a kind of ammonia water absorption refrigerating machine, it is characterized in that adopting the board-like full liquid generator of width passage as claimed in claim 1 and the board-like falling-film absorber of width passage as claimed in claim 2, waste heat is by the waste heat fat pipe of the board-like full liquid generator of width passage, heating concentrated ammonia liquor narrow passage adverse current and come concentrated ammonia liquor, produce gas-liquid mixture and enter gas-liquid separator in the lump, isolate after moisture ammonia is purified by segregator and be condensed into liquefied ammonia in plate-type condenser, liquefied ammonia is fed in ammonia tank, the heat exchanger tube neutralization that liquefied ammonia out enters into subcooler from ammonia tank supplies plate-type evaporator from the cold ammonia of plate-type evaporator after subcooler further heat exchange, liquefied ammonia evaporates and forms cold ammonia in plate-type evaporator, the concentrated ammonia liquor outlet header entering the board-like falling-film absorber bottom of width passage after cold ammonia enters subcooler under the effect of pressure reduction rises along weak aqua ammonia narrow passage, the cold ammonia risen is absorbed formation concentrated ammonia liquor from gas-liquid separator and through the weak aqua ammonia of solution heat exchanger cooling and is entered concentrated ammonia liquor tank, and pumped into the board-like full liquid generator of width passage by solution pump.
The board-like full liquid generator of width passage, 21 heat exchange plates are had to be welded to define cross-sectional area not wait and 10 waste heat fat pipes of alternate layout arranged side by side and 10 concentrated ammonia liquor narrow passages, total cross-sectional area of waste heat fat pipe is 10 times of total cross-sectional area of concentrated ammonia liquor narrow passage, waste heat fat pipe is communicated with waste heat import and waste heat outlet, waste heat import is arranged at the top of waste heat fat pipe, and waste heat outlet is arranged at the bottom of waste heat fat pipe; Concentrated ammonia liquor narrow passage is communicated with concentrated ammonia liquor import and gas-liquid mixture outlet; Concentrated ammonia liquor import is arranged at the bottom of concentrated ammonia liquor narrow passage, and gas-liquid mixture outlet is arranged at the top of concentrated ammonia liquor narrow passage; Pipeline before concentrated ammonia liquor import is provided with a unidirectional stop valve.Flow out from the outlet of bottom waste heat after the waste heat of large discharge enters waste heat fat pipe from top waste heat import, the concentrated ammonia liquor of low discharge is flowed out from the outlet of top gas-liquid mixture by after the waste-heat of waste heat fat pipe side formation gas-liquid mixture after the concentrated ammonia liquor inlet flow concentrated ammonia liquor narrow passage of bottom, and the direction that waste heat circulates in the board-like full liquid generator of width passage is completely contrary with the direction that concentrated ammonia liquor circulates.The setting of unidirectional stop valve makes concentrated ammonia liquor leniently enter the board-like bottom of expiring liquid generator of narrow passage, is full of each dense ammonia narrow passage and can not flows backwards, ensure that each narrow passage of concentrated ammonia liquor is full of concentrated ammonia liquor, prevent dry combustion method.
The board-like falling-film absorber of width passage, it is characterized in that by 11 heat exchange plates be welded define cross-sectional area not wait and 5 cooling water fat pipes of alternate layout arranged side by side and 5 weak aqua ammonia narrow passages, total cross-sectional area of cooling water fat pipe is 7 times of total cross-sectional area of weak aqua ammonia narrow passage; Cooling water fat pipe bottom is communicated with cooling water inlet, and cooling water fat pipe top is communicated with coolant outlet; Weak aqua ammonia narrow passage top is communicated with weak aqua ammonia import, and weak aqua ammonia narrow passage bottom is communicated with concentrated ammonia liquor outlet; The direction that cooling water circulates in the board-like falling-film absorber of width passage is completely contrary with the direction that weak aqua ammonia circulates.The cooling water of large discharge flows out from the coolant outlet on top after the cooling water inlet of cooling water fat pipe bottom circulates the large cooling water fat pipe of cross-sectional area, and the weak aqua ammonia of low discharge circulates to export from the concentrated ammonia liquor of bottom after the little weak aqua ammonia narrow passage of cross-sectional area forms concentrated solution with the cold ammonia blended absorbent entered from weak aqua ammonia narrow passage bottom from the weak aqua ammonia import being positioned at weak aqua ammonia narrow passage top and flows out.
The concrete feature of this programme also has, be positioned on the board-like falling-film absorber top of width passage above heat exchange plate and be provided with weak aqua ammonia import distribution case, the weak aqua ammonia distributor be connected with weak aqua ammonia import is provided with in weak aqua ammonia import distribution case inside, weak aqua ammonia distributor comprises 1 grid-type liquid distributor, the reverse V-shaped deflector of 1 cloth liquid dish and 5 opening angles 20 degree; Grid-type liquid distributor comprises 1 supervisor and is symmetrically distributed in 10 arms of supervisor both sides, and grid-type liquid distributor bottom is dispersed with 5 row liquid distributing holes uniformly, and weak aqua ammonia flows out from each liquid distributing hole uniformly; A cloth liquid dish is provided with in grid-type liquid distributor bottom, cloth liquid dish is provided with some cloth liquid dish liquid distributing holes, cloth liquid dish liquid distributing hole 2 is classified as 1 group, totally 10 row 5 groups, 2 row cloth liquid dish liquid distributing hole centre-to-centre spacing of each group are 4 millimeters, 5 row liquid distributing holes of grid-type liquid distributor bottom are in the positive top of 5 groups of cloth liquid dish liquid distributing hole longitudinal centre lines, and the weak aqua ammonia evenly flowed out from grid-type liquid distributor drops in cloth liquid dish uniformly, and weak aqua ammonia is flowed out uniformly by cloth liquid dish liquid distributing hole; 5 groups, cloth liquid dish bottom cloth liquid dish liquid distributing hole longitudinal centre line is welded with 5 reverse V-shaped deflectors that opening angle is 20 degree, two ends, 5 reverse V-shaped deflector bottoms to be deep in 5 weak aqua ammonia narrow passages 4 millimeters and each 1 millimeter of distance passage both sides, two ends heat exchange plate, the both sides of reverse V-shaped deflector are fallen into from the weak aqua ammonia of cloth liquid dish outflow, flow into uniformly on the heat exchange plate of weak aqua ammonia narrow passage both sides, flow out from top to bottom.
Cold ammonia enters from the bottom of weak aqua ammonia narrow passage, and cold ammonia rises to be absorbed by the top-down weak aqua ammonia of weak aqua ammonia narrow passage along weak aqua ammonia narrow passage and forms concentrated ammonia liquor, absorbs the heat the produced aquaporin cooling water from bottom to top that is cooled and takes away.
The beneficial effect of this programme is: the ammonia water absorption refrigerating machine of this programme adopts the board-like full liquid generator of width passage, the waste heat of large discharge walks the large waste heat fat pipe of cross-sectional area, the concentrated ammonia liquor of low discharge walks the little concentrated ammonia liquor narrow passage of cross-sectional area and the direction of the board-like full liquid generator of waste heat circulation width passage and concentrated ammonia liquor circulate width passage is board-like, and to expire the direction of liquid generator completely contrary, ensure that waste heat and concentrated ammonia liquor achieve again complete adverse current while the flow velocity of the board-like full liquid generator of width passage is close, thus substantially increase the heat exchange efficiency of the board-like full liquid generator of width passage, reduce its heat exchange area and volume, reduce manufacturing cost, after volume reduces, the amount of concentrated ammonia liquor also greatly reduces, the waste-heat concentrated ammonia liquor time, short unit starting was fast, when waste heat fluctuates, the temperature fluctuation of concentrated ammonia liquor is obvious, unit can adjust each operational factor in real time according to the variations in temperature of concentrated ammonia liquor and ensure that the response of unit is timely.The ammonia water absorption refrigerating machine of this programme adopts the board-like falling-film absorber of width passage, the cooling water of large discharge walks the large stream cooling water fat pipe of cross-sectional area, the direction of the weak aqua ammonia of low discharge walks the little weak aqua ammonia narrow passage of cross-sectional area and the direction of cooling water circulation width passage board-like falling-film absorber and weak aqua ammonia the circulate board-like falling-film absorber of width passage is completely contrary, ensure that cooling water and weak aqua ammonia achieve again complete adverse current while the flow velocity of the board-like falling-film absorber of width passage is close, thus substantially increase the heat exchange efficiency of the board-like falling-film absorber of width passage, reduce its heat exchange area and volume, reduce manufacturing cost.In order to the weak aqua ammonia realizing entering the board-like falling-film absorber of width passage can form uniform liquid film on the both sides heat exchange plate of weak aqua ammonia narrow passage, be positioned on the board-like falling-film absorber top of width passage above heat exchange plate and be provided with weak aqua ammonia import distribution case, be provided with in weak aqua ammonia import distribution case inside the weak aqua ammonia distributor be connected with weak aqua ammonia import.5 groups, cloth liquid dish bottom liquid distributing hole longitudinal centre line is welded with 5 reverse V-shaped deflectors that opening angle is 20 degree, two ends, 5 reverse V-shaped deflector bottoms to be deep in 5 weak aqua ammonia narrow passages 4 millimeters and each 1 millimeter of distance passage both sides, two ends heat exchange plate, the both sides of reverse V-shaped deflector are fallen into from the weak aqua ammonia of cloth liquid dish outflow, flow into uniformly on the heat exchange plate of weak aqua ammonia narrow passage both sides and form the uniform weak aqua ammonia liquid film of thickness, cold ammonia enters from the bottom of weak aqua ammonia narrow passage, cold ammonia rises by weak aqua ammonia narrow passage top-down weak aqua ammonia absorption formation concentrated ammonia liquor along weak aqua ammonia narrow passage.One key technology of falling-film absorber will guarantee to form the uniform liquid film of thickness exactly, liquid can not film forming or the uneven failure that all can cause falling film absorption of film forming, the weak aqua ammonia distributor of the board-like falling-film absorber of width passage effectively solves film forming problem, ensure that the operation normally and efficiently of the board-like falling-film absorber of width passage.The application of the board-like full liquid generator of width passage and the large parts of the board-like falling-film absorber of width passage two makes the unit of this programme be provided with that volume is little, low cost of manufacture, heat exchange efficiency are high compared with traditional ammonia water absorption refrigerating machine, to thermal source with cooling water change response is timely, the advantage such as fast of freezing.
Accompanying drawing explanation
Fig. 1 is the ammonia water absorption refrigerating machine working cycles flow process that waste heat drives, and arrow direction is flow direction.Fig. 2 is the board-like full liquid generator structure sectional view of width passage.Fig. 3 is the left view of Fig. 2.Fig. 4 is width passage board-like falling-film absorber structure sectional view.Fig. 5 is the left view of Fig. 4.Fig. 6 is grid-type liquid distributor structure chart.Fig. 7 is cloth liquid dish structure chart.Fig. 8 is the A-A view of Fig. 7.
In figure, 1-waste heat general import; 2-waste heat general export; 3-cooling water general import; 4-cooling water general export; The board-like full liquid generator of 5-width passage; 6-gas-liquid separator; 7-plate-type condenser; 8-plate-type evaporator; 9-ammonia tank; 10-subcooler; The board-like falling-film absorber of 11-width passage; 12-concentrated ammonia liquor tank; 13-solution heat exchanger; 14-solution pump; 15-unidirectional stop valve; 16-heat exchange plate; The import of 17-waste heat; 18-waste heat exports; The import of 19-concentrated ammonia liquor; 20-gas-liquid mixture exports; 21-waste heat import distribution case; 22-waste heat outlet header; 23-concentrated ammonia liquor import distribution case; 24-gas-liquid mixture outlet header; 25-heat exchange plate; The import of 26-weak aqua ammonia; 27-concentrated ammonia liquor exports; 28-cooling water inlet; 29-coolant outlet; The cold ammonia import of 30-; 31-concentrated ammonia liquor outlet header; 32-weak aqua ammonia import distribution case; 33-coolant outlet header; 34-cooling water inlet distribution case; 35-is responsible for; 36-arm; 37-liquid distributing hole; 38-cloth liquid dish; 39-cloth liquid dish liquid distributing hole; The reverse V-shaped deflector of 40-; 41-segregator; 42-concentrated ammonia liquor narrow passage; 43-waste heat fat pipe; 44-weak aqua ammonia narrow passage; 45-cooling water fat pipe.
Detailed description of the invention
Below in conjunction with technical scheme and accompanying drawing, describe the specific embodiment of this programme in detail.
As shown in Figure 1, a kind of ammonia water absorption refrigerating machine, it is characterized in that adopting the board-like full liquid generator 5 of width passage and the board-like falling-film absorber 11 of width passage, waste heat is by the waste heat fat pipe 43 of the board-like full liquid generator 5 of width passage, heating concentrated ammonia liquor narrow passage 42 adverse current and come concentrated ammonia liquor, produce gas-liquid mixture and enter gas-liquid separator 6 in the lump, isolate after moisture ammonia is purified by segregator 41 and be condensed into liquefied ammonia in plate-type condenser 7, liquefied ammonia is fed in ammonia tank 9, the heat exchanger tube neutralization that liquefied ammonia out enters into subcooler 10 from ammonia tank 9 supplies plate-type evaporator 8 from plate-type evaporator 8 cold ammonia out after subcooler 10 further heat exchange, liquefied ammonia evaporates and forms cold ammonia in plate-type evaporator 8, cold ammonia enters subcooler 10 and the further heat exchange of liquefied ammonia in heat exchanger tube, and the concentrated ammonia liquor outlet header 31 entering width passage board-like falling-film absorber 11 bottom under the effect of pressure reduction rises along weak aqua ammonia narrow passage 44, the cold ammonia risen is absorbed by the weak aqua ammonia cooled from gas-liquid separator 6 and through solution heat exchanger 13 and forms concentrated ammonia liquor and enter concentrated ammonia liquor tank 12, and pumped into the board-like full liquid generator 5 of width passage by solution pump 14.
As Figure 2-3, the board-like full liquid generator 5 of width passage is welded by 21 heat exchange plates 16 to define cross-sectional area and do not wait and 10 waste heat fat pipes 43 of alternate layout arranged side by side and 10 concentrated ammonia liquor narrow passages 42, total cross-sectional area of waste heat fat pipe 43 is 10 times of total cross-sectional area of concentrated ammonia liquor narrow passage 42, waste heat fat pipe 43 is communicated with waste heat import 17 and waste heat outlet 18, waste heat import 17 is arranged at the top of waste heat fat pipe 43, and waste heat outlet 18 is arranged at the bottom of waste heat fat pipe 43; Concentrated ammonia liquor narrow passage 42 is communicated with concentrated ammonia liquor import 19 and gas-liquid mixture outlet 20; Concentrated ammonia liquor import 19 is arranged at the bottom of concentrated ammonia liquor narrow passage 42, and gas-liquid mixture outlet 20 is arranged at the top of concentrated ammonia liquor narrow passage 42; Pipeline before concentrated ammonia liquor import 19 is provided with a unidirectional stop valve 15.Flow out from bottom waste heat outlet 18 after the waste heat of large discharge enters waste heat fat pipe 43 from top waste heat import 17, flow out from top gas-liquid mixture outlet 20 after being formed gas-liquid mixture by the waste-heat of waste heat fat pipe side after the concentrated ammonia liquor of low discharge circulates concentrated ammonia liquor narrow passage 42 from bottom concentrated ammonia liquor import 19, the direction that waste heat circulates in the board-like full liquid generator of width passage is completely contrary with the direction that concentrated ammonia liquor circulates.The setting of unidirectional stop valve 15 makes concentrated ammonia liquor leniently enter the board-like bottom of expiring liquid generator of narrow passage, is full of 10 concentrated ammonia liquor narrow passages 42 and can not flows backwards, ensure that 10 concentrated ammonia liquor narrow passages 42 are full of concentrated ammonia liquor, prevent dry combustion method.
As illustrated in figures 4-5, the board-like falling-film absorber 11 of width passage by 11 heat exchange plates 25 be welded define cross-sectional area not wait and 5 cooling water fat pipes 45 of alternate layout arranged side by side and 5 weak aqua ammonia narrow passages 44, total cross-sectional area of cooling water fat pipe 45 is 7 times of total cross-sectional area of weak aqua ammonia narrow passage 44; Cooling water fat pipe 45 bottom is communicated with cooling water inlet 28, and cooling water fat pipe 45 top is communicated with coolant outlet 29; Weak aqua ammonia narrow passage 44 top is communicated with weak aqua ammonia import 26, and weak aqua ammonia narrow passage 44 bottom is communicated with concentrated ammonia liquor outlet 27; The direction that cooling water circulates in the board-like falling-film absorber of width passage 11 is completely contrary with the direction that weak aqua ammonia circulates.The cooling water of large discharge flows out from the coolant outlet 29 on top after the cooling water inlet 28 of cooling water fat pipe 45 bottom circulates the large cooling water fat pipe 45 of cross-sectional area, and the weak aqua ammonia of low discharge circulates from the weak aqua ammonia import 26 being positioned at weak aqua ammonia narrow passage 44 top and exports 27 from the concentrated ammonia liquor of bottom after the little weak aqua ammonia narrow passage 44 of cross-sectional area forms concentrated ammonia liquor with the cold ammonia blended absorbent entered from weak aqua ammonia narrow passage 44 bottom and flow out.
Be positioned on width passage board-like falling-film absorber 11 top above heat exchange plate 25 and be provided with weak aqua ammonia import distribution case 32, the weak aqua ammonia distributor be connected with weak aqua ammonia import 26 is provided with in weak aqua ammonia import distribution case 32 inside, weak aqua ammonia distributor comprises 1 grid-type liquid distributor, the reverse V-shaped deflector 40 of 1 cloth liquid dish 38 and 5 opening angles 20 degree; As shown in figs 6-8, grid-type liquid distributor comprises 1 supervisor 35 and 10 piece arms 36 monosymmetric relative to supervisor 35, and grid-type liquid distributor bottom is dispersed with 5 row liquid distributing holes 37 uniformly, and weak aqua ammonia flows out from each liquid distributing hole 37 uniformly; A cloth liquid dish 38 is provided with in grid-type liquid distributor bottom, cloth liquid dish 38 is provided with some cloth liquid dish liquid distributing holes 39, cloth liquid dish liquid distributing hole 2 is classified as 1 group, totally 10 row 5 groups, 2 row cloth liquid dish liquid distributing hole 39 centre-to-centre spacing of each group are 4 millimeters, 5 row liquid distributing holes 37 of grid-type liquid distributor bottom are in the positive top of 5 groups of cloth liquid dish liquid distributing hole 39 longitudinal centre lines of cloth liquid dish 38, the weak aqua ammonia evenly flowed out from grid-type liquid distributor drops in cloth liquid dish 38 uniformly, and weak aqua ammonia is flowed out uniformly by the cloth liquid dish liquid distributing hole 39 in cloth liquid dish 38; 5 groups, cloth liquid dish 38 bottom cloth liquid dish liquid distributing hole 39 longitudinal centre line is welded with 5 reverse V-shaped deflectors 40 that opening angle is 20 degree, two ends, 5 reverse V-shaped deflector 40 bottoms are deep into 5 weak aqua ammonia narrow passages 44 interior 4 millimeters and distance passage both sides, two ends heat exchange plate 25 each 1 millimeter, the both sides of reverse V-shaped deflector 40 are fallen into from the weak aqua ammonia of cloth liquid dish 38 outflow, flow into uniformly on the heat exchange plate of weak aqua ammonia narrow passage 44 both sides, flow out from top to bottom.
Cold ammonia enters from the bottom of weak aqua ammonia narrow passage 44, and cold ammonia rises to be absorbed by the top-down weak aqua ammonia of weak aqua ammonia narrow passage 44 along weak aqua ammonia narrow passage 44 and forms concentrated ammonia liquor, absorbs the heat produced water fat pipe 45 cooling water from bottom to top that is cooled and takes away.
The ammonia water absorption refrigerating machine working cycles flow process that waste heat drives, arrow direction is flow direction; Waste heat enters into the waste heat import 17 of the board-like full liquid generator 5 of width passage from waste heat general import 1 and uniformly waste heat is distributed to each waste heat fat pipe 43 by waste heat import distribution case 21, first be pooled to waste heat outlet header 22 leniently board-like waste heat outlet 18 outflow of expiring liquid generator 5 of narrow passage again after heat exchange, finally discharge from waste heat general export 2; concentrated ammonia liquor in concentrated ammonia liquor narrow passage 42 heated rear generation gas-liquid mixture be first pooled to gas-liquid mixture outlet header 24 more leniently the gas-liquid mixture outlet 20 of the board-like full liquid generator 5 of narrow passage flow out and enter into gas-liquid separator 6, isolating the ammonia being condensed into liquid after moisture ammonia is purified by segregator 41 in plate-type condenser 7 is stored in ammonia tank 9, the heat exchanger tube neutralization that liquefied ammonia out enters into subcooler 10 from ammonia tank 9 supplies plate-type evaporator 8 after the plate-type evaporator 8 further heat exchange of cold ammonia out, liquefied ammonia evaporates and forms cold ammonia in plate-type evaporator 8, cold ammonia enters subcooler 10 and the further heat exchange of liquefied ammonia in heat exchanger tube, and the concentrated ammonia liquor outlet header 31 entering width passage board-like falling-film absorber 11 bottom under the effect of pressure reduction rises along the narrow runner 44 of weak aqua ammonia, the weak aqua ammonia import 26 of the weak aqua ammonia leniently narrow passage plate type falling-film absorber 11 cooled from gas-liquid separator 6 and through solution heat exchanger 13 flows into, be distributed on bottom cloth liquid dish 38 uniformly through the 5 row liquid distributing holes 37 be responsible on 35 and arm 36, it is on two walls of 5 reverse V-shaped deflectors 40 of 20 degree that the 5 group cloth liquid dish liquid distributing holes 39 of weak aqua ammonia again on cloth liquid dish 38 are distributed to opening angle uniformly, flow on the both sides heat exchange plate 25 of 5 weak aqua ammonia narrow passages 44 of the board-like falling-film absorber 11 of width passage uniformly, the cold ammonia absorbed from top to bottom from bottom to top forms concentrated ammonia liquor, cooling water enters from cooling water inlet 28 and the case 34 that distributed by cooling water inlet is assigned to each cooling water fat pipe 45 uniformly, is first pooled to coolant outlet header 33 and flows out from coolant outlet 29, thus taken away the heat absorbing generation after heat exchange, absorb the concentrated ammonia liquor formed and enter concentrated ammonia liquor tank 12, concentrated ammonia liquor to enter through the concentrated ammonia liquor import 19 of the unidirectional stop valve 15 leniently board-like full liquid generator 5 of narrow passage and the case 23 that distributed by concentrated ammonia liquor import is assigned to each concentrated ammonia liquor narrow passage 42 uniformly through solution pump 14 pressurized stream, completes a circulation.
Claims (5)
1. the board-like full liquid generator of width passage, it is characterized in that having 21 heat exchange plates to be welded and define that cross-sectional area does not wait and 10 waste heat fat pipes of alternate layout arranged side by side and 10 concentrated ammonia liquor narrow passages, total cross-sectional area of waste heat fat pipe is 10 times of total cross-sectional area of concentrated ammonia liquor narrow passage, waste heat fat pipe is communicated with waste heat import and waste heat outlet, waste heat import is arranged at the top of waste heat fat pipe, and waste heat outlet is arranged at the bottom of waste heat fat pipe; Concentrated ammonia liquor narrow passage is communicated with concentrated ammonia liquor import and gas-liquid mixture outlet; Concentrated ammonia liquor import is arranged at the bottom of concentrated ammonia liquor narrow passage, and gas-liquid mixture outlet is arranged at the top of concentrated ammonia liquor narrow passage; Pipeline before concentrated ammonia liquor import is provided with a unidirectional stop valve.
2. the board-like falling-film absorber of width passage, it is characterized in that by 11 heat exchange plates be welded define cross-sectional area not wait and 5 cooling water fat pipes of alternate layout arranged side by side and 5 weak aqua ammonia narrow passages, total cross-sectional area of cooling water fat pipe is 7 times of total cross-sectional area of weak aqua ammonia narrow passage; Cooling water fat pipe bottom is communicated with cooling water inlet, and cooling water fat pipe top is communicated with coolant outlet; Weak aqua ammonia narrow passage top is communicated with weak aqua ammonia import, and weak aqua ammonia narrow passage bottom is communicated with concentrated ammonia liquor outlet; The direction that cooling water circulates in the board-like falling-film absorber of width passage is completely contrary with the direction that weak aqua ammonia circulates.
3. the board-like falling-film absorber of width passage according to claim 2, it is characterized in that being positioned on the board-like falling-film absorber top of width passage above heat exchange plate and be provided with weak aqua ammonia import distribution case, the weak aqua ammonia distributor be connected with weak aqua ammonia import is provided with in weak aqua ammonia import distribution case inside, weak aqua ammonia distributor comprises 1 grid-type liquid distributor, the reverse V-shaped deflector of 1 cloth liquid dish and 5 opening angles 20 degree; Grid-type liquid distributor comprises 1 supervisor and is symmetrically distributed in 10 arms of supervisor both sides, and grid-type liquid distributor bottom is dispersed with 5 row liquid distributing holes uniformly, and weak aqua ammonia flows out from each liquid distributing hole uniformly; A cloth liquid dish is provided with in grid-type liquid distributor bottom, cloth liquid dish is provided with some cloth liquid dish liquid distributing holes, cloth liquid dish liquid distributing hole 2 is classified as 1 group, totally 10 row 5 groups, 2 row cloth liquid dish liquid distributing hole centre-to-centre spacing of each group are 4 millimeters, 5 row liquid distributing holes of grid-type liquid distributor bottom are in the positive top of 5 groups of cloth liquid dish liquid distributing hole longitudinal centre lines, and the weak aqua ammonia evenly flowed out from grid-type liquid distributor drops in cloth liquid dish uniformly, and weak aqua ammonia is flowed out uniformly by cloth liquid dish liquid distributing hole; 5 groups, cloth liquid dish bottom cloth liquid dish liquid distributing hole longitudinal centre line is welded with 5 reverse V-shaped deflectors that opening angle is 20 degree, two ends, 5 reverse V-shaped deflector bottoms to be deep in 5 weak aqua ammonia narrow passages 4 millimeters and each 1 millimeter of distance passage both sides, two ends heat exchange plate, the both sides of reverse V-shaped deflector are fallen into from the weak aqua ammonia of cloth liquid dish outflow, flow into uniformly on the heat exchange plate of weak aqua ammonia narrow passage both sides, flow out from top to bottom.
4. an ammonia water absorption refrigerating machine, it is characterized in that adopting the board-like full liquid generator of width passage as claimed in claim 1 and the board-like falling-film absorber of width passage as claimed in claim 2, waste heat is by the waste heat fat pipe of the board-like full liquid generator of width passage, heating concentrated ammonia liquor narrow passage adverse current and come concentrated ammonia liquor, produce gas-liquid mixture and enter gas-liquid separator in the lump, isolate after moisture ammonia is purified by segregator and be condensed into liquefied ammonia in plate-type condenser, liquefied ammonia is fed in ammonia tank, the heat exchanger tube neutralization that liquefied ammonia out enters into subcooler from ammonia tank supplies plate-type evaporator from the cold ammonia of plate-type evaporator after subcooler further heat exchange, liquefied ammonia evaporates and forms cold ammonia in plate-type evaporator, the concentrated ammonia liquor outlet header entering the board-like falling-film absorber bottom of width passage after cold ammonia enters subcooler under the effect of pressure reduction rises along weak aqua ammonia narrow passage, the cold ammonia risen is absorbed formation concentrated ammonia liquor from gas-liquid separator and through the weak aqua ammonia of solution heat exchanger cooling and is entered concentrated ammonia liquor tank, and pumped into the board-like full liquid generator of width passage by solution pump.
5. ammonia water absorption refrigerating machine according to claim 4, it is characterized in that being positioned on the board-like falling-film absorber top of width passage above heat exchange plate and be provided with weak aqua ammonia import distribution case, the weak aqua ammonia distributor be connected with weak aqua ammonia import is provided with in weak aqua ammonia import distribution case inside, weak aqua ammonia distributor comprises 1 grid-type liquid distributor, the reverse V-shaped deflector of 1 cloth liquid dish and 5 opening angles 20 degree; Grid-type liquid distributor comprises 1 supervisor and is symmetrically distributed in 10 arms of supervisor both sides, and grid-type liquid distributor bottom is dispersed with 5 row liquid distributing holes uniformly, and weak aqua ammonia flows out from each liquid distributing hole uniformly; A cloth liquid dish is provided with in grid-type liquid distributor bottom, cloth liquid dish is provided with some cloth liquid dish liquid distributing holes, cloth liquid dish liquid distributing hole 2 is classified as 1 group, totally 10 row 5 groups, 2 row cloth liquid dish liquid distributing hole centre-to-centre spacing of each group are 4 millimeters, 5 row liquid distributing holes of grid-type liquid distributor bottom are in the positive top of 5 groups of cloth liquid dish liquid distributing hole longitudinal centre lines, and the weak aqua ammonia evenly flowed out from grid-type liquid distributor drops in cloth liquid dish uniformly, and weak aqua ammonia is flowed out uniformly by cloth liquid dish liquid distributing hole; 5 groups, cloth liquid dish bottom cloth liquid dish liquid distributing hole longitudinal centre line is welded with 5 reverse V-shaped deflectors that opening angle is 20 degree, two ends, 5 reverse V-shaped deflector bottoms to be deep in 5 weak aqua ammonia narrow passages 4 millimeters and each 1 millimeter of distance passage both sides, two ends heat exchange plate, the both sides of reverse V-shaped deflector are fallen into from the weak aqua ammonia of cloth liquid dish outflow, flow into uniformly on the heat exchange plate of weak aqua ammonia narrow passage both sides, flow out from top to bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410251739.XA CN103983046B (en) | 2014-06-09 | 2014-06-09 | The board-like full liquid generator of width passage and falling-film absorber and ammonia water absorption refrigerating machine |
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| CN201410251739.XA CN103983046B (en) | 2014-06-09 | 2014-06-09 | The board-like full liquid generator of width passage and falling-film absorber and ammonia water absorption refrigerating machine |
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| CN103983046B true CN103983046B (en) | 2016-04-20 |
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| CN111156731A (en) * | 2020-01-03 | 2020-05-15 | 北京市伟业供热设备有限责任公司 | Absorption type cold and hot water unit |
| FR3108711B1 (en) * | 2020-03-25 | 2022-06-17 | Commissariat Energie Atomique | Generator comprising a rectification function and absorption machine comprising said generator |
| CN111457616B (en) * | 2020-03-30 | 2021-02-12 | 普泛能源技术研究院(北京)有限公司 | Improved method for enhancing heat exchange of generator, generator and absorption refrigeration and heat pump |
| CN115493314B (en) * | 2022-09-05 | 2023-11-28 | 约克（无锡）空调冷冻设备有限公司 | Generator(s) |
| CN115727559B (en) * | 2022-11-17 | 2024-01-26 | 安徽金禾实业股份有限公司 | Combined type refrigerating ice machine for diketene production |
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| CN2212765Y (en) * | 1994-03-09 | 1995-11-15 | 四平市九圆热交换设备制造公司 | Plate-type heat exchanger with wide and narrow channels |
| JP2000283662A (en) * | 1999-03-31 | 2000-10-13 | Tokyo Gas Co Ltd | Falling liquid film type heat exchanger |
| JP2002277090A (en) * | 2001-03-22 | 2002-09-25 | Tokyo Gas Co Ltd | Plate type heat exchanger for absorption refrigerator |
| CN200965438Y (en) * | 2006-09-29 | 2007-10-24 | 四平市北方换热器制造有限公司 | Wide channel weld plate type heat exchanger |
| CN203893505U (en) * | 2014-06-09 | 2014-10-22 | 泰山集团股份有限公司 | Wide channel and narrow channel plate type hydraulic filling generator, wide channel and narrow channel plate type falling film absorber and ammonia absorption refrigerator |
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