CN109506383A - The direct condensation by contact cooling cycle system of three-level overlapping - Google Patents
The direct condensation by contact cooling cycle system of three-level overlapping Download PDFInfo
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- CN109506383A CN109506383A CN201811595109.9A CN201811595109A CN109506383A CN 109506383 A CN109506383 A CN 109506383A CN 201811595109 A CN201811595109 A CN 201811595109A CN 109506383 A CN109506383 A CN 109506383A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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Abstract
The present invention discloses the direct condensation by contact cooling cycle system of three-level overlapping; it recycles medium temperature grade, the discharge gas of the refrigeration compressor of low-temperature level circulation and the direct condensation by contact of supercooled liquid carry out refrigeration cycle; so as to the pressure ratio of refrigeration compressor, low-temperature level refrigeration compressor in reducing; reduce the power consumption of refrigeration compressor; to improve the overall performance of three-level cascade refrigeration circulation; it is energy saving, protect environment.
Description
Technical field
The present invention relates to refrigeration technology fields, and in particular to a kind of direct condensation by contact cooling cycle system of three-level overlapping.
Background technique
When the device tested for cryogenic material, cold lower with cold temperature, conventional such as when being lower than -80 DEG C or less
Two-stage compression refrigeration circulation and the pressure of Cascade refrigeration cycle refrigeration compressor are bigger, and refrigeration compressor cannot normal work
Make.
Summary of the invention
The purpose of the present invention is being directed to technological deficiency existing in the prior art, a kind of three-level cascade refrigeration cyclic system is provided
System, to solve the efficient operation of cryogenic refrigerating system.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of direct condensation by contact cooling cycle system of three-level overlapping, including condenser, high-temperature refrigeration compressor, medium temperature are straight
Connect contact heat-exchanging device, medium temperature circulating pump, medium temperature refrigeration compressor, low temperature direct contact heat transfer device, low-temperature circulating pump, cryogenic refrigeration
Compressor, evaporator, low-temperature expansion valve, cryogenic subcoolers, medium temperature expansion valve, medium temperature subcooler, high temperature expansion valve.
The outlet of the evaporator is connect with the entrance of cryogenic refrigeration compressor, the air exit of cryogenic refrigeration compressor with
The gas access of low temperature direct contact heat transfer device connects, the saturated liquid outlet of low temperature direct contact heat transfer device and cryogenic subcoolers
Low-temperature circulating saturated liquid entrance connection, cryogenic subcoolers low temperature subcooled liquid outlet is divided into two-way, it is swollen through low temperature all the way
The connection of the entrance of swollen valve and evaporator, another way connect through low-temperature circulating pump and the supercooled liquid entrance of low temperature direct contact heat transfer device
It connects；
The medium temperature gas vent of the cryogenic subcoolers is connect with the entrance of medium temperature refrigeration compressor, medium temperature refrigeration compressor
Air exit connect with the gas access of medium temperature direct contact heat transfer device, the outlet of the saturated liquid of medium temperature direct contact heat transfer device
It being connect with the medium temperature of medium temperature subcooler circulation saturated liquid entrance, the medium temperature subcooled liquid outlet of medium temperature subcooler is divided into two-way,
It is connected all the way through medium temperature expansion valve and the medium temperature gas-liquid mixture fluid entrance of cryogenic subcoolers, another way is through medium temperature circulating pump in
The supercooled liquid entrance of warm direct contact heat transfer device connects；
The high-temperature gas outlet of the medium temperature subcooler is connect with the entrance of high-temperature refrigeration compressor, high-temperature refrigeration compressor
Air exit and the entrance of condenser connect, the high temperature gas-liquid of the outlet of condenser through high temperature expansion valve and medium temperature subcooler is mixed
Close fluid inlet connection.
Compared with prior art, the beneficial effects of the present invention are:
The direct condensation by contact cooling cycle system of three-level overlapping of the invention, by, the refrigeration compressor of low-temperature level circulation
Discharge gas and the direct condensation by contact of supercooled liquid, in reduction, the pressure ratio of low-temperature level refrigeration compressor, reduce refrigeration compressor
Power consumption, improve three-level cascade refrigeration circulation overall performance, it is energy saving, protect environment.
Detailed description of the invention
Fig. 1 show the schematic diagram of the direct condensation by contact cooling cycle system of three-level overlapping provided by the invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the direct condensation by contact cooling cycle system of three-level overlapping of the present invention, including condenser 1, high-temperature refrigeration
Compressor 2, medium temperature direct contact heat transfer device 3, medium temperature circulating pump 4, medium temperature refrigeration compressor 5, low temperature direct contact heat transfer device 6,
Low-temperature circulating pump 7, cryogenic refrigeration compressor 8, evaporator 9, low-temperature expansion valve 10, cryogenic subcoolers 11, medium temperature expansion valve 12, in
Warm subcooler 13, high temperature expansion valve 14；
The outlet of the evaporator 9 is connect with the entrance of cryogenic refrigeration compressor 8, the row of the cryogenic refrigeration compressor 8
Gas outlet is connect with the gas access of low temperature direct contact heat transfer device 6, and the saturated liquid of the low temperature direct contact heat transfer device 6 goes out
Mouth is connect with the low-temperature circulating saturated liquid entrance of cryogenic subcoolers 11, the low temperature subcooled liquid outlet of the cryogenic subcoolers 11
It is divided into two-way, is connect all the way through low-temperature expansion valve 10 with the entrance of evaporator 9, another way is direct with low temperature through low-temperature circulating pump 7
The supercooled liquid entrance of contact heat-exchanging device 6 connects；
The medium temperature gas vent of the cryogenic subcoolers 11 is connect with the entrance of medium temperature refrigeration compressor 5, the medium temperature system
The air exit of cold compressor 5 is connect with the gas access of medium temperature direct contact heat transfer device 3, medium temperature direct contact heat transfer device 3
Saturated liquid is exported to be connect with the medium temperature of medium temperature subcooler 13 circulation saturated liquid entrance, the medium temperature supercooled liquid of medium temperature subcooler 13
Body outlet is divided into two-way, connect all the way through medium temperature expansion valve 12 with the medium temperature gas-liquid mixture fluid entrance of cryogenic subcoolers 11, separately
It is connect all the way through medium temperature circulating pump 4 with the supercooled liquid entrance of medium temperature direct contact heat transfer device 3；
The high-temperature gas outlet of the medium temperature subcooler 13 is connect with the entrance of high-temperature refrigeration compressor 2, high-temperature refrigeration pressure
The air exit of contracting machine 2 is connect with the entrance of condenser 1, and the outlet of condenser 1 is through high temperature expansion valve 14 and medium temperature subcooler 13
High temperature gas-liquid mixture fluid entrance connection.
It should be noted that in the present invention, the high-temperature refrigeration compressor 2, medium temperature direct contact heat transfer device 3, medium temperature
Circulating pump 4, medium temperature refrigeration compressor 5, low temperature direct contact heat transfer device 6, low-temperature circulating pump 7, cryogenic refrigeration compressor 8, low temperature
Expansion valve 10, cryogenic subcoolers 11, medium temperature expansion valve 12, medium temperature subcooler 13, high temperature expansion valve 14, are all made of the prior art
Refrigeration compressor, direct-contact heat exchanger, circulating pump, expansion valve and subcooler existing equipment, the condenser 1 and
Evaporator 9 is existing condenser and evaporator.
The cooling cycle system operation when, high temperature circulation refrigeration compressor 2 be discharged gas in condenser 1 with cooling
Medium heat exchange, is condensed into high temperature high pressure liquid, is high temperature gas-liquid mixture fluid through 14 reducing pressure by regulating flow of high temperature expansion valve, in
Warm subcooler 13, the gas that medium temperature refrigeration compressor 5 is discharged enters medium temperature direct contact heat transfer device 3 and the supercooled liquid heat of mixing is handed over
It changes, the liquid of condensation is divided into two-way after entering medium temperature subcooler 13 and high temperature gas-liquid mixture fluid heat exchange supercooling, all the way passes through
Warm 12 reducing pressure by regulating flow of expansion valve is medium temperature gas-liquid mixture fluid, and into cryogenic subcoolers 11, another way enters through medium temperature circulating pump 4
Medium temperature direct contact heat transfer device 3；The gas that cryogenic refrigeration compressor 8 is discharged enters low temperature direct contact heat transfer device 6 and supercooled liquid
Heat exchange is mixed, condenses into after liquid enters cryogenic subcoolers 11 and medium temperature gas-liquid mixture fluid heat exchange supercooling and is divided into two-way,
It is all the way low temperature gas-liquid mixture fluid through 10 reducing pressure by regulating flow of low-temperature expansion valve, the heat in cooled space is absorbed into evaporator 9,
Another way enters low temperature direct contact heat transfer device 6 through low-temperature circulating pump 7.
The direct condensation by contact cooling cycle system of three-level overlapping of the invention, by, the refrigeration compressor of low-temperature level circulation
Discharge gas and the direct condensation by contact of supercooled liquid, in reduction, the pressure ratio of low-temperature level refrigeration compressor, reduce refrigeration compressor
Power consumption, improve three-level cascade refrigeration circulation overall performance, it is energy saving, protect environment.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of direct condensation by contact cooling cycle system of three-level overlapping, which is characterized in that the outlet and low temperature system of its evaporator
The entrance of cold compressor connects, and the air exit of cryogenic refrigeration compressor and the gas access of low temperature direct contact heat transfer device connect
It connects, the saturated liquid outlet of low temperature direct contact heat transfer device is connect with the low-temperature circulating saturated liquid entrance of cryogenic subcoolers, low
The low temperature subcooled liquid outlet of warm subcooler is divided into two-way, connects all the way through the entrance of low-temperature expansion valve and evaporator, another way
It pumps through low-temperature circulating and is connect with the supercooled liquid entrance of low temperature direct contact heat transfer device；
The medium temperature gas vent of the cryogenic subcoolers is connect with the entrance of medium temperature refrigeration compressor, the row of medium temperature refrigeration compressor
Gas outlet is connect with the gas access of medium temperature direct contact heat transfer device, and the saturated liquid outlet of medium temperature direct contact heat transfer device is in
The medium temperature circulation saturated liquid entrance connection of warm subcooler, the medium temperature subcooled liquid outlet of medium temperature subcooler are divided into two-way, all the way
It is connected through medium temperature expansion valve and the medium temperature gas-liquid mixture fluid entrance of cryogenic subcoolers, another way is straight through medium temperature circulating pump and medium temperature
Connect the supercooled liquid entrance connection of contact heat-exchanging device；
The high-temperature gas outlet of the medium temperature subcooler is connect with the entrance of high-temperature refrigeration compressor, the row of high-temperature refrigeration compressor
Gas outlet is connect with the entrance of condenser, high temperature gas-liquid mixed flow of the outlet of condenser through high temperature expansion valve Yu medium temperature subcooler
The connection of body entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595109.9A CN109506383A (en) | 2018-12-25 | 2018-12-25 | The direct condensation by contact cooling cycle system of three-level overlapping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595109.9A CN109506383A (en) | 2018-12-25 | 2018-12-25 | The direct condensation by contact cooling cycle system of three-level overlapping |
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| Publication Number | Publication Date |
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| CN109506383A true CN109506383A (en) | 2019-03-22 |
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| CN201811595109.9A Pending CN109506383A (en) | 2018-12-25 | 2018-12-25 | The direct condensation by contact cooling cycle system of three-level overlapping |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260547A (en) * | 2019-06-13 | 2019-09-20 | 科希曼电器有限公司 | Temperature protection system for cascade type heat pump |
| CN110887265A (en) * | 2019-11-25 | 2020-03-17 | 珠海格力电器股份有限公司 | Internal circulation superposition heat pump system, control method and heat pump dryer |
| CN111120323A (en) * | 2019-12-26 | 2020-05-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Multi-cylinder compressor and multi-stage cascade refrigeration system |
| CN111928511A (en) * | 2020-08-07 | 2020-11-13 | 西安西热节能技术有限公司 | Liquefied air energy storage peak shaving system and method based on compressor intermediate suction |
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| WO2013021762A1 (en) * | 2011-08-05 | 2013-02-14 | 東芝キヤリア株式会社 | Heating system |
| CN203657260U (en) * | 2013-11-20 | 2014-06-18 | 郑州长城科工贸有限公司 | Minus 120 DEG C refrigeration circulating device |
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| CN107120916A (en) * | 2017-05-08 | 2017-09-01 | 上海理工大学 | Superposition type dual temperature drying system |
| CN209541216U (en) * | 2018-12-25 | 2019-10-25 | 天津商业大学 | The direct condensation by contact cooling cycle system of three-level overlapping |
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- 2018-12-25 CN CN201811595109.9A patent/CN109506383A/en active Pending
Patent Citations (8)
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| CN2421592Y (en) * | 2000-04-11 | 2001-02-28 | 北京天利医药设备有限公司 | Deep-cooling refrigerator set structure |
| WO2013021762A1 (en) * | 2011-08-05 | 2013-02-14 | 東芝キヤリア株式会社 | Heating system |
| CN203657260U (en) * | 2013-11-20 | 2014-06-18 | 郑州长城科工贸有限公司 | Minus 120 DEG C refrigeration circulating device |
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| CN106288467A (en) * | 2016-09-20 | 2017-01-04 | 天津商业大学 | The auxiliary water cooling refrigeration system of condensing heat exchanger is directly contacted with vertical counterflow |
| CN106642836A (en) * | 2017-02-17 | 2017-05-10 | 天津商业大学 | Direct contact condensation refrigeration system with saturated liquid supercooled completely |
| CN107120916A (en) * | 2017-05-08 | 2017-09-01 | 上海理工大学 | Superposition type dual temperature drying system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260547A (en) * | 2019-06-13 | 2019-09-20 | 科希曼电器有限公司 | Temperature protection system for cascade type heat pump |
| CN110887265A (en) * | 2019-11-25 | 2020-03-17 | 珠海格力电器股份有限公司 | Internal circulation superposition heat pump system, control method and heat pump dryer |
| CN111120323A (en) * | 2019-12-26 | 2020-05-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Multi-cylinder compressor and multi-stage cascade refrigeration system |
| CN111928511A (en) * | 2020-08-07 | 2020-11-13 | 西安西热节能技术有限公司 | Liquefied air energy storage peak shaving system and method based on compressor intermediate suction |
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Application publication date: 20190322 |