CN209541216U - 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 PDF

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Publication number
CN209541216U
CN209541216U CN201822188287.1U CN201822188287U CN209541216U CN 209541216 U CN209541216 U CN 209541216U CN 201822188287 U CN201822188287 U CN 201822188287U CN 209541216 U CN209541216 U CN 209541216U
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China
Prior art keywords
temperature
medium temperature
entrance
low
connect
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Expired - Fee Related
Application number
CN201822188287.1U
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Chinese (zh)
Inventor
宁静红
刘璐璐
陈玉
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Tianjin University of Commerce
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Tianjin University of Commerce
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Priority to CN201822188287.1U priority Critical patent/CN209541216U/en
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Abstract

The utility model 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

The direct condensation by contact cooling cycle system of three-level overlapping
Technical field
The utility model relates to refrigeration technology fields, and in particular to a kind of three-level overlapping direct condensation by contact refrigeration cycle system System.
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.
Utility model content
The purpose of this utility model is provided a kind of three-level cascade refrigeration and follows for technological deficiency existing in the prior art Loop system, to solve the efficient operation of cryogenic refrigerating system.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
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 utility model has the beneficial effects that
The direct condensation by contact cooling cycle system of the three-level overlapping of the utility model, by, the refrigeration pressure of low-temperature level circulation The discharge gas of contracting machine and supercooled liquid direct condensation by contact in reduction, the pressure ratio of low-temperature level refrigeration compressor, reduce refrigeration pressure The power consumption of contracting machine improves the overall performance of three-level cascade refrigeration circulation, energy saving, protects 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 utility model.
Specific embodiment
The utility model 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 the utility model three-level overlapping, 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, medium temperature 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 utility model, 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 existing skill The refrigeration compressor of art, 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 the three-level overlapping of the utility model, by, the refrigeration pressure of low-temperature level circulation The discharge gas of contracting machine and supercooled liquid direct condensation by contact in reduction, the pressure ratio of low-temperature level refrigeration compressor, reduce refrigeration pressure The power consumption of contracting machine improves the overall performance of three-level cascade refrigeration circulation, energy saving, protects environment.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change It also should be regarded as the protection scope of the utility model into retouching.

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.
CN201822188287.1U 2018-12-25 2018-12-25 The direct condensation by contact cooling cycle system of three-level overlapping Expired - Fee Related CN209541216U (en)

Priority Applications (1)

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CN201822188287.1U CN209541216U (en) 2018-12-25 2018-12-25 The direct condensation by contact cooling cycle system of three-level overlapping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822188287.1U CN209541216U (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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109506383A (en) * 2018-12-25 2019-03-22 天津商业大学 The direct condensation by contact cooling cycle system of three-level overlapping

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109506383A (en) * 2018-12-25 2019-03-22 天津商业大学 The direct condensation by contact cooling cycle system of three-level overlapping

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Granted publication date: 20191025

Termination date: 20201225