CN101240967A - Gas-liquid separation heat exchanging gas-returning regulation station - Google Patents
Gas-liquid separation heat exchanging gas-returning regulation station Download PDFInfo
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- CN101240967A CN101240967A CNA2008100146597A CN200810014659A CN101240967A CN 101240967 A CN101240967 A CN 101240967A CN A2008100146597 A CNA2008100146597 A CN A2008100146597A CN 200810014659 A CN200810014659 A CN 200810014659A CN 101240967 A CN101240967 A CN 101240967A
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Abstract
An air-liquid separating heat-exchanging air-returning regulating station is characterized in that a lower high-efficient heat-exchanging pipe (32) and an upper high-efficient heat-exchanging pipe (40) are equipped at the interior of the regulating station; the heat-exchanging pipe chambers are among the pipes. The exterior of the regulating station is respectively connected to a low-temperature evaporator (1), a single machine refrigerator (4), an ammonia liquid reservoir (11) and an ammonia liquid regulating station (8) via a minus 60 DEG C refrigerator air-returning pipe (31), a single machine refrigerator air-absorbing pipe (36), ammonia liquid reservoir liquid-delivering pipe (37), de-R717 liquid regulating station pipe (38). The regulating station is fixed by a fixed clapboard (33), a end enclosure (34), a fixed bolt (35) and a clapboard (41).
Description
One, technical field
The present invention relates to a kind of gas-liquid separation heat exchanging gas-returning regulation station, especially a kind of ultra low temperature cool house gas-liquid separation heat exchanging gas-returning regulation station belongs to gas-liquid separation and regulates the station structure technical field.
Two, background technology
At present, being higher than-36 ℃ of refrigeration almost is to make cold-producing medium with ammonia, domestic-60 ℃ of tuna depots absolutely are to introduce by Japan is a complete set of, all be to adopt freon cascade refrigeration system, be to adopt R-22 and two kinds of refrigeration systems of R-23, disadvantage is that freon destroys atmospheric ozone layer, international and domesticly is about to stop to produce and uses.Still do not have the precedent of ammonia system ultralow temperature, make cold-producing medium, atmospheric ozone layer is not had destruction with ammonia.
Three, summary of the invention
The objective of the invention is to, provide a kind of gas-liquid separation heat exchanging gas-returning of ultra low temperature cool house of realizing to regulate, structural design is rationally advanced, and cold-producing medium does not have the ultra low temperature cool house gas-liquid separation heat exchanging gas-returning regulation station of destruction to atmospheric ozone layer.
Ultra low temperature cool house gas-liquid separation heat exchanging gas-returning regulation station of the present invention, special character is, inside is provided with bottom efficient heat-exchanging pipe 32, top efficient heat-exchanging pipe 40, the centre is between heat exchanger tube 39, the outside is come liquid pipe 37, is gone to R717 liquid adjusting station pipe 38 and cryogenic vaporizer 1, unit refrigerator 4, ammonia liquid reservoir 11, ammonia liquid adjusting station 8 to be communicated with by-60 ℃ of evaporimeter mufflers 31, unit refrigerator air intake duct 36, ammonia liquid reservoir respectively, is fixed by stationary barrier 33, end socket 34, set bolt 35, dividing plate 41;
Gas-liquid separation heat exchanging gas-returning regulation station of the present invention is applied to ultra low temperature cool house, make cold-producing medium with ammonia, freezer adopts double-chamber structure, the outside is a preparation room, the inside depots, depots is established cryogenic vaporizer 1, preparation room is established time cryogenic vaporizer 5, cryogenic vaporizer 1 output is communicated with gas-liquid separation heat exchanging gas-returning regulation station 3 through ammonia gas-returning regulation station 2 and carries out gas-liquid separation, gas-liquid separation heat exchanging gas-returning regulation station 3 outputs are communicated with unit refrigerator 4 and carry out the one-level compression exhaust, unit refrigerator 4 outputs connection low pressure recycle bucket 6 inputs make the hot ammonia gas after the compression enter the low pressure recycle bucket, low pressure recycle bucket 6 liquid outputs are communicated with time cryogenic vaporizer 5 inputs by liquid pump 12, sending the liquid ammonia of low pressure recycle bucket 6 separation back to time cryogenic vaporizer 5 freezes, inferior cryogenic vaporizer 5 outputs are communicated with low pressure recycle bucket 6 inputs, the compression after heat ammonia gas that the mixing gas-liquid that makes 5 outputs of time cryogenic vaporizer and unit refrigerator 4 the are exported cooling of meeting, enter low pressure recycle bucket 6, low pressure recycle bucket 6 is realized gas-liquid separation, and cryogenic vaporizer 1 hot ammonia defrosting returns liquid and advances low pressure recycle bucket 6 inputs by liquid adjusting station 8;
Gas-liquid separation heat exchanging gas-returning regulation station 3 outputs are also regulated station 8 by ammonia liquid and are communicated with cryogenic vaporizer 1, the ammonia liquid supply rate size that is used to regulate cryogenic vaporizer 1;
Low pressure recycle bucket 6 gas output ends are communicated with two-shipper refrigerator 7, gas after 6 separation of low pressure recycle bucket is carried out the secondary compression through two-shipper refrigerator 7, two-shipper refrigerator 7 is communicated to intercooler 9, discharge the high temperature ammonia and enter intercooler 9 coolings, cooled gas enters two-shipper refrigerator 7 again and carries out three grades of compressions, the gas output end of two-shipper refrigerator 7 is communicated to oil eliminator 13, cryogenic vaporizer 1 hot ammonia defrosting enters gas-liquid separation heat exchanging gas-returning regulation station 3 from oil eliminator 13 connections, enter cryogenic vaporizer 1 each road by gas-liquid separation heat exchanging gas-returning regulation station 3 connections, oil eliminator 13 outputs are communicated to devaporizer 10, devaporizer 10 outputs are communicated to ammonia liquid reservoir 11, make the high-temperature gas of discharge enter devaporizer 10, by liquefy ammonia after the gas cooled, liquid ammonia enters ammonia liquid reservoir 11;
Ammonia liquid reservoir 11 outputs are communicated with gas-liquid separation heat exchanging gas-returning regulation station 3, low pressure recycle bucket 6, intercooler 9 respectively.
Described freezer adopts double-chamber structure, the outside is a preparation room-29 ℃～-31 ℃, the inside depots-59 ℃～-61 ℃, the temperature difference-28 ℃～-32 ℃, the heat-insulation layer at ceiling and ground place around the depots, adopting thickness is the 400-600mm polyurethane, splits at-60 ℃ in order to prevent polyurethane, each spray polyurethane thickness 50mm sprays another layer again after cooling is shunk;
Described unit refrigerator 4, two-shipper refrigerator 7 formed a three tier structure compressibility, and two low temperature when reaching-60 ℃ and-30 ℃ adopt three tier structure cold, the first order is compressed refrigerator discharge hot ammonia cooling, through double-unit system cold compression cooling liquefy ammonia;
Described gas-liquid separation heat exchanging gas-returning regulation station 3 carries out gas-liquid separation, liquid R717 heat exchange, it is that low temperature R717 liquid is regulated the station that three functions of R717 gas regulation, liquid are regulated station 8, and cryogenic vaporizer 1 each road of furred ceiling comb is gone in the R717 distribution that gas-liquid separation heat exchanging gas-returning regulation station 3 comes out;
Described cryogenic vaporizer 1 adopts R717 furred ceiling comb, each layer furred ceiling comb is the two-way evaporation tube that the top is interlaced, be arranged in parallel, evaporation tube is a several layers according to designing the refrigerating capacity that needs evenly distributed, 2 times the number of plies is the comb way, each road is connected to ammonia liquid separately and regulates station 8, the ammonia liquid supply rate size that can regulate cryogenic vaporizer 1 each road furred ceiling comb separately;
Fabrication and installation gas-liquid separation heat exchanging gas-returning regulation station 3, low temperature liquid ammonia enters in the refrigeration seamless steel pipe furred ceiling comb of-60 ℃ of depots,-60 ℃ of furred ceiling combs are totally 4 floor 8 road feed liquor ammonia, through certain stroke, the heat absorption evaporation reaches terminal point, and air inlet liquid separation heat exchanging gas-returning regulation station 3 becomes 95% above gaseous ammonia by liquid ammonia evaporates, absorb heat in the storehouse, reduce storehouse temperature;-60 ℃ of depots come out low temperature ammonia and small amount of drop enter between the gas-liquid separation heat exchanging organ pipe 39, because volume increases, gas flow rate slows down, and entrained drip separates and drops on gas-liquid separation heat exchanging gas-returning regulation station 3 bottoms in the gas ammonia;
Come liquid ammonia to enter in the bottom efficient heat-exchanging pipe 32 from ammonia liquid reservoir 11 through managing 37, drop to gas-liquid separation heat exchanging device lower liquid ammonia, evaporate at absolute pressure 0.18-0.15MPa, liquid ammonia obtains cooling in the heat exchanger tube 32, cooling back liquid ammonia enters again in the top efficient heat-exchanging pipe 40, enter between heat exchanger tube 39 from come out cryogenic gas and small amount of drop of-60 ℃ of depots, lower the temperature for again efficient heat-exchanging pipe 40 interior liquid ammonias again, through cooling, low temperature liquid ammonia enters liquid ammonia adjusting station 8 from managing 38, be assigned to-60 ℃ of each Lu Guanzhong of furred ceiling comb, evaporative cooling absorbs heat; Not only lowered the temperature heat exchange but also play gas-liquid separation and the effect of gas-returning regulation station of gas-liquid separation heat exchanging gas-returning regulation station 3 guarantees that one-level compression refrigerator normally moves.
Described intercooler 9 carries out secondary heat of compression R717 gas cooled, devaporizer 10 becomes liquid with three grades of compression R717 gas cooled, low pressure recycle bucket 6 is realized one-level heat of compression R717 gas cooled and preparation room time cryogenic vaporizer 5 furred ceiling comb gas-liquid separations, liquid pump 12 security reserve chamber furred ceiling comb liquid R717 normal circulation refrigeration;
Described-60 ℃/-30 ℃ electric thermal insulating storehouse doors comprise-60 ℃ of electronic cold-storage doors of depots ,-30 ℃ of electronic cold-storage doors of preparation room, and two cold-storage doors another door when passing in and out any one is in closed condition;-60 ℃ of electronic cold-storage door major functions of depots are visual plants of-60 ℃ of depots of turnover, are that-60 ℃ of depots colds of assurance are not gone in the preparation room, pass in and out-60 ℃ of depots and close the door at any time, reduce loss of refrigeration capacity.-30 ℃ of electronic cold-storage doors of preparation room, it is-30 ℃ of preparation room visual plants of turnover, major function is that-30 ℃ of preparation room colds of assurance are not gone in the outdoor environment, reduces loss of refrigeration capacity.Want into-60 must to open-30 ℃ of preparation room Electrically operated gate earlier in ℃ depots, close the door after entering preparation room, open-60 ℃ of depots Electrically operated gate again, enter and close the door.Open earlier when coming out-60 ℃ of depots and close the door after-60 ℃ of Electrically operated gate are come out, open-30 ℃ of Electrically operated gate again and come out to close the door.Have only by-60 ℃ of depots of this program turnover, loss of refrigeration capacity is little, has saved electricity consumption.
The middle part of described oil eliminator 13 is provided with air inlet 21, top is provided with the gas outlet 22 that the high-temperature gas ammonia after separating is fed devaporizer 10, be provided with the stainless steel cloth 23 that intercepts vaporific oil droplet in the gaseous ammonia between air inlet 21 and the gas outlet 22, the bottom is provided with the fuel outlet 24 that the oil that separates is emitted; Separation principle is as follows: three grades of compression high-temperature gas ammonia enter oil eliminator 13 from air inlet 21, because the separator volume is big, gas flow rate slows down, carry vaporific oil droplet in the gaseous ammonia secretly and enter stainless steel cloth 23, just separate through vaporific oil droplet in the stainless (steel) wire obstruct gaseous ammonia, drop on the oil eliminator bottom, reach the separating oil effect, the oil that separates is emitted from fuel outlet 24, and the high-temperature gas ammonia after the separation 22 enters devaporizer from the gas outlet.
Ultra low temperature cool house gas-liquid separation heat exchanging gas-returning regulation station of the present invention realizes that the gas-liquid separation heat exchanging gas-returning of ultra low temperature cool house is regulated, and the structural design advanced person is reasonable, and temperature is steady in the freezer, and temperature fluctuation in storehouse is little, and drying loss is little, makes simply, and maintenance does not need repairing; Three grades of compression process of freezer solved refrigerator efficient under evaporating temperature-70 ℃ operating mode low, storage vault can't be reduced to a difficult problem of-60 ℃ at all.
Four, description of drawings
Fig. 1: oil eliminator 13 structural representations;
Fig. 2: cryogenic vaporizer 1, inferior cryogenic vaporizer 5 distribution schematic diagrams that the freezer double-chamber structure adopts;
The vertical view of Fig. 3: Fig. 2;
The A-A cutaway view of Fig. 4: Fig. 2;
Fig. 5: cryogenic vaporizer 1 distribution front view;
The vertical view of Fig. 6: Fig. 5;
Fig. 7: embodiment of the invention gas-liquid separation heat exchanging gas-returning regulation station 3 structural representations;
Fig. 8: embodiment of the invention ultra low temperature cool house structural representation.
Among the figure, cryogenic vaporizer 1, ammonia gas-returning regulation station 2, gas-liquid separation heat exchanging gas-returning regulation station 3, unit refrigerator 4, inferior cryogenic vaporizer 5, low pressure recycle bucket 6, two-shipper refrigerator 7, ammonia liquid is regulated station 8, intercooler 9, devaporizer 10, ammonia liquid reservoir 11, liquid pump 12, oil eliminator 13, air inlet 21, gas outlet 22, stainless steel cloth 23, fuel outlet 24,-60 ℃ of evaporimeter mufflers 31, bottom efficient heat-exchanging pipe 32, stationary barrier 33, end socket 34, set bolt 35, unit refrigerator air intake duct 36, the ammonia liquid reservoir comes liquid pipe 37, go R717 liquid to regulate station pipe 38, between heat exchanger tube 39, top efficient heat-exchanging pipe 40, dividing plate 41.
Five, the specific embodiment
Following with reference to accompanying drawing, provide the specific embodiment of the present invention, be used for formation of the present invention is further specified.
Embodiment
Tuna storehouse temperature is divided three kinds in the world :-50 ℃ ,-55 ℃ ,-60 ℃, by international most advanced tuna storehouse temperature is-60 ℃ of development depots, adopt the cold-producing medium of R717 as-60 ℃ of tuna depots, the heat-insulation layer that ceiling and ground are located around-60 ℃ of tuna depots, adopting thickness is the 450mm polyurethane, in order to prevent that polyurethane from splitting at-60 degree, spray polyurethane thickness 50mm at every turn, after shrinking, cooling sprays another layer again; It is preparation room-30 ℃ that freezer adopts double-chamber structure, outside, the inside depots-60 ℃, the temperature difference-30 ℃.
(1)-60 ℃ working medium (ammonia) furred ceiling comb
Adopt the R717 refrigeration system, reach-60 ℃ of low tempertaure storage effects.We design-60 ℃ of furred ceiling combs, have changed traditional manufacturing technique, trans D 38 * 2.5 seamless steel pipe spacing 110mm, and longitudinal pitch 138mm, each road evaporating pan pipe range 200m, top advances liquid ammonia, the terminal gaseous ammonia that becomes of heat absorption evaporation.Furred ceiling comb totally 8 tunnel, ￠ 38 * 2.5 seamless steel pipe 1600m ,-60 ℃ of depots areas are 1: 2.90 with-60 ℃ of furred ceiling comb heat exchange area ratios.
See Fig. 6, low temperature liquid ammonia enters in the special-purpose seamless steel pipe of ￠ 38 * 2.5 (mm) refrigeration from A, B two ends, and-60 ℃ of furred ceiling combs totally 4 floor 8 tunnel advance liquid ammonia, and each road is through 200m stroke, and the heat absorption evaporation reaches terminal point C, D.One group of-60 ℃ of furred ceiling comb are totally 4 floor 8 tunnel air inlet liquid separation heat exchanging gas-returning regulation station, become gaseous ammonia more than 95% by liquid ammonia evaporates, absorb heat in the storehouse, the reduction storehouse temperature.
(2) gas-liquid separation heat exchanging gas-returning regulation station
See Fig. 7,3 ,-60 ℃ of depots of fabrication and installation diameter 273mm gas-liquid separation heat exchanging gas-returning regulation station come out low temperature ammonia and small amount of drop, enter between the gas-liquid separation heat exchanging organ pipe 39, because volume increases, gas flow rate slows down, and entrained drip separates and drops on gas-liquid separation heat exchanging device bottom in the gas ammonia.
Come liquid ammonia to enter in the efficient heat-exchanging pipe 32 Lower Half pipes from ammonia liquid reservoir 11 through managing 37, drop to gas-liquid separation heat exchanging device lower liquid ammonia, evaporate at absolute pressure 0.18-0.15MPa, liquid ammonia obtains cooling in the heat exchanger tube 32, cooling back liquid ammonia enters again in the first half efficient heat-exchanging pipe 40, enter between heat exchanger tube from come out cryogenic gas and small amount of drop of-60 ℃ of depots, lower the temperature for again efficient heat-exchanging pipe 40 interior liquid ammonias again, through cooling, low temperature liquid ammonia enters R717 liquid adjusting station 8 from managing 38, be assigned to-60 ℃ of each Lu Guanzhong of furred ceiling comb, evaporative cooling absorbs heat.The effect of gas-liquid separation and gas-returning regulation station is played in the gas-liquid separation heat exchanging gas-returning regulation station heat exchange of promptly lowering the temperature again, guarantees that one-level compression refrigerator normally moves.
(3) three grades of compression refrigerations
Three tier structure is cold to be with a single-unit cold compressor and a double-unit system cold compressor, finish-60 ℃ and-30 ℃ of two storehouse temperature, in fact be exactly that a single-unit cold compressor is freezed to-60 ℃, because in evaporating temperature-70 ℃, in evaporation absolute pressure 0.18-0.15MPa (the vacuum gauge pressure 0.082-0.085MPa) scope, the refrigerator capacity is little, delivery temperature is low, discharge gas and enter the low pressure recycle bucket, the advantages outweigh the disadvantages to the two-shipper refrigeration machine, it is low particularly to remedy two-shipper compressor secondary admission pressure summer, insurmountable problem, and improve the double-unit system cold.Because preparation room temperature-30 ℃, present just arbitrarily downgrade volume proportioning 1: 3 of refrigerator, can't change refrigerator, but the gases that we discharge-60 ℃ of refrigeration system units, add to the air inlet of two-shipper refrigerator one-level, we improve two-shipper one-level pressure of inspiration(Pi), improve simultaneously two-shipper secondary pressure of inspiration(Pi) again, reduce compression ratio, two-shipper secondary delivery temperature descends significantly, refrigerating capacity also just improves, power consumption also just lowers, and the double-unit system cold compressor operates in the ideal technology scope, and three tier structure is cold to organically combine with-30 ℃ of two warm areas-60 ℃, have complementary advantages, have more novelty.
The cold China that solved of three tier structure makes refrigerator under evaporating temperature-70 ℃ operating mode, the tuna storage vault can't be reduced to a difficult problem of-60 ℃ at all, the breakthrough of this difficult problem provides opportunity for China refrigerator manufacturing enterprise enters-60 ℃ of tuna storage vault refrigerating fields.
(4) cold-producing medium R717
Initiative is utilized cold-producing medium R717 at home, and with-60 ℃ of tuna depots coolings, freon cascade refrigeration device is mostly adopted in inexpensive cold-producing medium R717 refrigeration system replacement in the world, small investment, universal wide, substitute import, the feature of environmental protection is good, fills the domestic gaps.
-60 ℃ of depots refrigeration principles:
Liquefied ammonia becomes gaseous ammonia by heat in the liquid state attraction storehouse in-60 ℃ of furred ceiling combs, reduce storehouse temperature, gaseous ammonia is through the ammonia gas-returning regulation station, enter gas-liquid separation heat exchanging gas-returning regulation station, band liquid ammonia in the gas is separated, liquid ammonia evaporates is again with liquefied ammonia cooling in the gas-liquid separation organ pipe, reduce the temperature that enters storehouse-60 ℃ furred ceiling comb ammoniacal liquor, gaseous ammonia enters unit (one-level) refrigeration compressor, evaporation absolute pressure 0.18～0.15MPa (vacuum meter gauge pressure 0.082～0.085MPa), through unit compressor one-level compression exhaust (gauge pressure)-0.01～0.01Mpa, compression after heat ammonia gas enters low pressure recycle bucket 6, meet cooling with preparation room (30 ℃) furred ceiling comb output gaseous mixture liquid phase, gas-liquid is separated back gas through 7 compressions of two-shipper refrigerator at low pressure recycle bucket 6, and liquid ammonia is sent preparation room (30 ℃) furred ceiling comb refrigeration again back to by liquid pump 12; Two-shipper refrigerator 7 is discharged the high temperature ammonia and is entered intercooler 9 coolings, gas enters two-shipper refrigerator 7 again and carries out three grades of compressions, the high-temperature gas of discharging enters oil eliminator, the refrigerator oil of carrying secretly in the gaseous ammonia is separated, high-temperature gas ammonia enters devaporizer 10 again, by liquefy ammonia after the gas cooled, liquid ammonia enters ammonia liquid reservoir 11; Come out to enter in the gas-liquid separation heat exchanging gas-returning regulation station 3 from the ammonia liquid reservoir, enter-60 ℃ of tuna furred ceiling combs, whole process of refrigerastion is finished by a unit and a double-unit system cold compressor, key be the air-breathing gauge pressure of two-shipper compressor one-level be controlled at-0.01～0.01MPa scope in, can improve single-unit cold compressor efficient like this.
Important technological parameters and specification
| Parameter name | Technical parameter |
| Go into the goods amount | 8000kg/ day (shedding cargo temperature-35 ℃) |
| Furred ceiling comb evaporating pressure (absolute pressure) | 0.18～0.15MPa |
| One-level pressure at expulsion (gauge pressure) | -0.01～0.01MPa |
| Secondary pressure at expulsion (gauge pressure) | 0.2～0.3MPa |
| Three grades of pressures at expulsion (gauge pressure) | 1.5MPa below |
| Tuna depots temperature | -60℃±1 |
| The preparation room temperature | -30℃±1 |
| Evaporating temperature | -70℃ |
| Condensing mode | Water |
| Cold-producing medium | R717 |
| -60 ℃ of depots heat-insulation layers | 450mm |
| -30 ℃ of depots heat-insulation layers | 180mm |
| Power supply | 380V*50Hz |
Embodiment of the invention ultra low temperature cool house has following technical characterstic:
1, cryogenic vaporizer 1 furred ceiling comb, easy implementation rational in infrastructure, swept once frost in artificial per 30 days, annual hot gas R717 melts once frost, and storehouse temperature is steady, the Ku Wen fluctuation is little, one-60 ℃ constant temperature just, drying loss is little, makes simple, absolutely adopt domestic raw materials, maintenance does not need repairing; And introduce-60 ℃ of cascade refrigeration devices by Japan, and every day, the furred ceiling air-cooler needed molten white 45 minutes of electricity, and temperature raises about 10 ℃, and the storehouse temperature changes greatly, and drying loss is big; This cover-60 ℃ working medium R717 refrigeration process is fit to build large, medium and small various-60 ℃ of tunas and similar provisions storeroom;
2 ,-60 ℃ working medium (ammonia) gas-liquid separation heat exchanging gas-returning regulation station 3, it is gas-liquid separator, liquid R717 heat exchanger, R717 gas regulation station, the shortcoming that volume is little, efficient is high, three kinds of equipment of solution are huge, easy for installation simple, save a large amount of raw material, reduce cost, improve the market competitiveness;
3, three grades of compression process: solved China and made refrigerator under evaporating temperature-70 ℃ operating mode, the tuna storage vault can't be reduced to a difficult problem of-60 ℃ at all, this difficult problem breaks through, provide opportunity for China refrigerator manufacturing enterprise enters-60 ℃ of tuna storage vault refrigeration plants, three grades of compression process have reached two effects (60 ℃ and-30 ℃);
4, finish to monopolize China-60 ℃ tuna storage vault refrigeration plant market by Japan, three grades of compression refrigeration technologies combine with-60 ℃ of working medium (ammonia) furred ceiling comb, electricity consumption is little, a 4AV-12.5 refrigeration compressor, do not stop in service at 24 hours, under the evaporating temperature-70 ℃ operating mode, one-level compression refrigeration power consumption less than 190 watts thousand hours.
Claims (3)
1, gas-liquid separation heat exchanging gas-returning regulation station, be characterised in that, inside is provided with bottom efficient heat-exchanging pipe (32), top efficient heat-exchanging pipe (40), between the tube and tube (39) between heat exchanger tube, the outside is come liquid pipe (37), is gone to R717 liquid adjusting station pipe (38) and cryogenic vaporizer (1), unit refrigerator (4), ammonia liquid reservoir (11), ammonia liquid adjusting station (8) to be communicated with by-60 ℃ of evaporimeter mufflers (31), unit refrigerator air intake duct (36), ammonia liquid reservoir respectively, is fixed by stationary barrier (33), end socket (34), set bolt (35), dividing plate (41).
2, according to the described ultra low temperature cool house of claim 1, it is characterized in that, cryogenic vaporizer (1) output is communicated with gas-liquid separation heat exchanging gas-returning regulation station (3) through ammonia gas-returning regulation station (2), gas-liquid separation heat exchanging gas-returning regulation station (3) output is communicated with unit refrigerator (4), and gas-liquid separation heat exchanging gas-returning regulation station (3) output is regulated station (8) by ammonia liquid and is communicated with cryogenic vaporizer (1).
3, according to the described ultra low temperature cool house of claim 1, it is characterized in that, described gas-liquid separation heat exchanging gas-returning regulation station (3) carries out gas-liquid separation, liquid R717 heat exchange, three functions of R717 gas regulation, it is that low temperature R717 liquid is regulated the station that liquid is regulated station (8), and each road of cryogenic vaporizer (1) furred ceiling comb is gone in the R717 distribution that gas-liquid separation heat exchanging gas-returning regulation station (3) comes out.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2008100146597A CN100572993C (en) | 2008-02-26 | 2008-02-26 | Gas-liquid separation heat exchanging gas-returning regulation station |
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| CNB2008100146597A CN100572993C (en) | 2008-02-26 | 2008-02-26 | Gas-liquid separation heat exchanging gas-returning regulation station |
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| Publication Number | Publication Date |
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| CN101240967A true CN101240967A (en) | 2008-08-13 |
| CN100572993C CN100572993C (en) | 2009-12-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799837A (en) * | 2018-06-04 | 2018-11-13 | 北京中冷高科制冷设备有限公司 | A kind of remodeling method of liquefied ammonia refrigeration freezer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799837A (en) * | 2018-06-04 | 2018-11-13 | 北京中冷高科制冷设备有限公司 | A kind of remodeling method of liquefied ammonia refrigeration freezer |
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