CN205332620U - Take vapour and liquid separator's CO2 overlapping refrigerating plant - Google Patents
Take vapour and liquid separator's CO2 overlapping refrigerating plant Download PDFInfo
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- CN205332620U CN205332620U CN201620064831.XU CN201620064831U CN205332620U CN 205332620 U CN205332620 U CN 205332620U CN 201620064831 U CN201620064831 U CN 201620064831U CN 205332620 U CN205332620 U CN 205332620U
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Abstract
The utility model belongs to a take vapour and liquid separator's CO2 overlapping refrigerating plant. The problem that will solve is exactly that the background art exists: the many multiplying powers of evaporimeter supply liquid, and there have ascending return -air pipeline resistance to be big, seriously influence the refrigeration effect of bottom evaporimeter, and the scheduling problem is hanged down to system economy nature. The problem of this technique is solved the technical scheme main points that adopt are: CO2 low pressure circulation section of thick bamboo F mouth passes through the pipeline in proper order through CO2 compressor, condensing evaporator K mouth and E mouth, CO2 cistern, CO2 choke valve, CO2 low pressure circulation section of thick bamboo D mouth or A mouth and B mouth, vapour and liquid separator T mouth and S mouth, evaporimeter, CO2 vapour and liquid separator N mouth and M mouth, CO2 low pressure circulation section of thick bamboo A mouth or D mouth, the liquid level is higher than the interior liquid level of CO2 vapour and liquid separator in the CO2 low pressure circulation section of thick bamboo, and the liquid level is higher than the evaporimeter in the CO2 vapour and liquid separator, CO2 vapour and liquid separator is provided with level control apparatus. Be applicable to CO2 refrigerating system.
Description
Technical field: this utility model belongs to Refrigeration Technique, specifically a kind of CO with gas-liquid separator2Cascade refrigeration device。
Background technology: existing CO2Cascade refrigeration device, the CO of many multiplying powers2Cold-producing medium is by CO2Transport pump is to vaporizer, and the outlet of vaporizer is gas-liquid two-phase state, and return-air carries out gas-liquid separation to low pressure recycle cylinder, and liquid participates in circulation again, and gas is entered condensation in condenser/evaporator after compressor boost。Many multiplying powers feed flow is to ensure that the heat transfer effect of vaporizer。Such design is very normal for conventional refrigerant system, but unit is arranged in the multi-story cold storage on top, storehouse, vaporizer many multiplying powers feed flow, there is rising return-air duct resistance big, has a strong impact on the problem such as refrigeration of bottom vaporizer。
Utility model content: the purpose of this utility model is exactly propose a kind of CO with gas-liquid separator2Cascade refrigeration device, exists solving background technology: vaporizer many multiplying powers feed flow, there is rising return-air duct resistance big, has a strong impact on the problem such as refrigeration of bottom vaporizer。Solve this technical problem and be the technical scheme is that the first scheme: a kind of CO with gas-liquid separator2Cascade refrigeration device, wherein high-temperature level system is: high-temperature level compressor outlet sequentially passes through high-temperature level condenser, high-temperature level liquid reservoir, high-temperature level choke valve and condenser/evaporator H mouth by pipeline and G mouth returns to high-temperature level suction port of compressor;It is characterized in that low-temperature level system is: CO2Low pressure recycle cylinder F mouth sequentially passes through CO by pipeline2Compressor, condenser/evaporator K mouth and E mouth, CO2Liquid reservoir, CO2Choke valve, CO2Low pressure recycle cylinder D mouth or A mouth and B mouth, gas-liquid separator T mouth and S mouth, vaporizer, CO2Gas-liquid separator N mouth and M mouth, CO2Low pressure recycle cylinder A mouth or D mouth;CO2In low pressure recycle cylinder, liquid level is higher than CO2Liquid level in gas-liquid separator, CO2In gas-liquid separator, liquid level is higher than vaporizer;CO2Gas-liquid separator is provided with fluid level control device。
First scheme: a kind of CO with gas-liquid separator2Cascade refrigeration device, wherein high-temperature level system is: high-temperature level compressor outlet sequentially passes through high-temperature level condenser, high-temperature level liquid reservoir, high-temperature level choke valve and condenser/evaporator H mouth by pipeline and G mouth returns to high-temperature level suction port of compressor;It is characterized in that low-temperature level system is: CO2Compressor outlet sequentially passes through condenser/evaporator K mouth and E mouth, CO by pipeline2Liquid reservoir, CO2Choke valve, CO2Low pressure recycle cylinder D mouth and B mouth, gas-liquid separator T mouth and S mouth, vaporizer, CO2Gas-liquid separator N mouth and M mouth return CO2Suction port of compressor;CO2In low pressure recycle cylinder, liquid level is higher than CO2Liquid level in gas-liquid separator, CO2In gas-liquid separator, liquid level is higher than vaporizer;CO2Gas-liquid separator is provided with fluid level control device。
In two above scheme, CO2Low pressure recycle cylinder B mouth and CO2Between gas-liquid separator T mouth, CO is set2Pump。CO2The quantity of gas-liquid separator can be 1, it is also possible to is multiple stage;Every CO2The vaporizer quantity of gas-liquid separator configuration can be 1, it is also possible to is multiple stage。Wherein, CO2The A mouth of low pressure recycle cylinder and D mouth are positioned at the gas phase zone of inlet end, CO2The F mouth of low pressure recycle cylinder is positioned at the gas phase zone of outlet side, CO2The B mouth of low pressure recycle cylinder is positioned at liquid phase region。The K mouth of condenser/evaporator is positioned at CO2The inlet end of working medium side, the E mouth of condenser/evaporator is positioned at CO2The liquid outlet of working medium side, the H mouth of condenser/evaporator is the entrance of high-temperature level working medium, and the G mouth of condenser/evaporator is the outlet of high-temperature level working medium。CO2The T mouth of gas-liquid separator and N mouth are positioned at the bottom of gas phase zone, CO2The M mouth of gas-liquid separator is positioned at the top of gas phase zone, CO2The S mouth of gas-liquid separator is positioned at liquid phase region。
This utility model is had the beneficial effect that employing technique scheme compared with the prior art, CO2Low pressure recycle liquid within the cartridge relies on gravity to flow into the CO of each layer2In gas-liquid separator, influx is by CO2The fluid level control device of gas-liquid separator controls。Under special circumstances, due to the reason of pipe design, it is possible to arrange CO2Pump is to overcome the resistance of pipeline。CO2Gas-liquid separator level stability is in certain altitude range, it is to avoid due to the impact that each interlayer vaporizer setting height(from bottom) difference causes, it is ensured that the heat transfer effect of vaporizer。The more important thing is, from CO2Gas-liquid separator out be more dry gas, the resistance drop when resistance drop in rising standpipe is than gas-liquid two-phase is much smaller so that the evaporating temperature of bottom vaporizer is guaranteed, and is greatly improved the economy of system。
Accompanying drawing illustrates: Fig. 1 is the schematic diagram of the first scheme of this utility model。Fig. 2 is the schematic diagram of this utility model first scheme。
Detailed description of the invention:
Embodiment 1: with reference to Fig. 1, a kind of CO with gas-liquid separator2Cascade refrigeration device, wherein high-temperature level system is: high-temperature level compressor 7 is exported and sequentially passed through high-temperature level condenser 8, high-temperature level liquid reservoir 1, high-temperature level choke valve 2 and condenser/evaporator 3H mouth and G mouth return high-temperature level compressor 7 entrance by pipeline;It is characterized in that low-temperature level system is: CO2Low pressure recycle cylinder 4F mouth sequentially passes through CO by pipeline2Compressor 9, condenser/evaporator 3K mouth and E mouth, CO2Liquid reservoir 10, CO2Choke valve 11, CO2Low pressure recycle cylinder 4D mouth or A mouth and B mouth, gas-liquid separator 5T mouth and S mouth, vaporizer 6, CO2Gas-liquid separator 5N mouth and M mouth, CO2Low pressure recycle cylinder 4A mouth or D mouth;CO2In low pressure recycle cylinder 4, liquid level is higher than CO2Liquid level in gas-liquid separator 5, CO2In gas-liquid separator 5, liquid level is higher than vaporizer 6;CO2Gas-liquid separator 5 is provided with fluid level control device;CO2Low pressure recycle cylinder 4B mouth and CO2Between gas-liquid separator 5T mouth, CO is set2Pump 12;CO2The quantity of gas-liquid separator 5 can be 1, it is also possible to is multiple stage;Every CO2Vaporizer 6 quantity of gas-liquid separator 5 configuration can be 1, it is also possible to is multiple stage。
Embodiment 2: with reference to Fig. 2, a kind of CO with gas-liquid separator2Cascade refrigeration device, wherein high-temperature level system is: high-temperature level compressor 7 is exported and sequentially passed through high-temperature level condenser 8, high-temperature level liquid reservoir 1, high-temperature level choke valve 2 and condenser/evaporator 3H mouth and G mouth return high-temperature level compressor 7 entrance by pipeline;It is characterized in that low-temperature level system is: CO2Compressor 9 is exported and is sequentially passed through condenser/evaporator 3K mouth and E mouth, CO by pipeline2Liquid reservoir 10, CO2Choke valve 11, CO2Low pressure recycle cylinder 4D mouth and B mouth, CO2Gas-liquid separator 5T mouth and S mouth, vaporizer 6, CO2Gas-liquid separator 5N mouth and M mouth return CO2Compressor 9 entrance;CO2In low pressure recycle cylinder 4, liquid level is higher than CO2Liquid level in gas-liquid separator 5, CO2In gas-liquid separator 5, liquid level is higher than vaporizer 6;CO2Gas-liquid separator 5 is provided with fluid level control device;CO2Low pressure recycle cylinder 4B mouth and CO2Between gas-liquid separator 5T mouth, CO is set2Pump 12;CO2The quantity of gas-liquid separator 5 can be 1, it is also possible to is multiple stage;Every CO2Vaporizer 6 quantity of gas-liquid separator 5 configuration can be 1, it is also possible to is multiple stage。
Claims (5)
1. the CO with gas-liquid separator2Cascade refrigeration device, wherein high-temperature level system is: high-temperature level compressor (7) outlet sequentially passes through high-temperature level condenser (8), high-temperature level liquid reservoir (1), high-temperature level choke valve (2) and condenser/evaporator (3) H mouth by pipeline and G mouth returns high-temperature level compressor (7) entrance;It is characterized in that low-temperature level system is: CO2Low pressure recycle cylinder (4) F mouth sequentially passes through CO by pipeline2Compressor (9), condenser/evaporator (3) K mouth and E mouth, CO2Liquid reservoir (10), CO2Choke valve (11), CO2Low pressure recycle cylinder (4) D mouth or A mouth and B mouth, gas-liquid separator (5) T mouth and S mouth, vaporizer (6), CO2Gas-liquid separator (5) N mouth and M mouth, CO2Low pressure recycle cylinder (4) A mouth or D mouth;CO2Low pressure recycle cylinder (4) interior liquid level is higher than CO2Gas-liquid separator (5) interior liquid level, CO2Gas-liquid separator (5) interior liquid level is higher than vaporizer (6);CO2Gas-liquid separator (5) is provided with fluid level control device。
2. the CO with gas-liquid separator2Cascade refrigeration device, wherein high-temperature level system is: high-temperature level compressor (7) outlet sequentially passes through high-temperature level condenser (8), high-temperature level liquid reservoir (1), high-temperature level choke valve (2) and condenser/evaporator (3) H mouth by pipeline and G mouth returns high-temperature level compressor (7) entrance;It is characterized in that low-temperature level system is: CO2Compressor (9) outlet sequentially passes through condenser/evaporator (3) K mouth and E mouth, CO by pipeline2Liquid reservoir (10), CO2Choke valve (11), CO2Low pressure recycle cylinder (4) D mouth and B mouth, CO2Gas-liquid separator (5) T mouth and S mouth, vaporizer (6), CO2Gas-liquid separator (5) N mouth and M mouth return CO2Compressor (9) entrance;CO2Low pressure recycle cylinder (4) interior liquid level is higher than CO2Gas-liquid separator (5) interior liquid level, CO2Gas-liquid separator (5) interior liquid level is higher than vaporizer (6);CO2Gas-liquid separator (5) is provided with fluid level control device。
3. a kind of CO with gas-liquid separator according to claim 1 or claim 22Cascade refrigeration device, it is characterised in that CO2Low pressure recycle cylinder (4) B mouth and CO2Between gas-liquid separator (5) T mouth, CO is set2Pump (12)。
4. a kind of CO with gas-liquid separator according to claim 1 or claim 22Cascade refrigeration device, its feature is at CO2The quantity of gas-liquid separator (5) can be 1, it is also possible to is multiple stage;Every CO2Vaporizer (6) quantity that gas-liquid separator (5) configures can be 1, it is also possible to is multiple stage。
5. a kind of CO with gas-liquid separator according to claim 32Cascade refrigeration device, its feature is at CO2The quantity of gas-liquid separator (5) can be 1, it is also possible to is multiple stage;Every CO2Vaporizer (6) quantity that gas-liquid separator (5) configures can be 1, it is also possible to is multiple stage。
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CN201620064831.XU CN205332620U (en) | 2016-01-25 | 2016-01-25 | Take vapour and liquid separator's CO2 overlapping refrigerating plant |
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CN201620064831.XU CN205332620U (en) | 2016-01-25 | 2016-01-25 | Take vapour and liquid separator's CO2 overlapping refrigerating plant |
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