CN206094626U - Cascade refrigeration circulation system - Google Patents
Cascade refrigeration circulation system Download PDFInfo
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- CN206094626U CN206094626U CN201621098622.3U CN201621098622U CN206094626U CN 206094626 U CN206094626 U CN 206094626U CN 201621098622 U CN201621098622 U CN 201621098622U CN 206094626 U CN206094626 U CN 206094626U
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- input port
- delivery outlet
- refrigeration system
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 58
- 239000002826 coolant Substances 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 abstract description 6
- 239000003507 refrigerant Substances 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 5
- 101100194816 Caenorhabditis elegans rig-3 gene Proteins 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a cascade refrigeration circulation system, including high temperature level refrigerating system and low -temperature level refrigerating system, high temperature level refrigerating system with be equipped with the evaporation -condensation ware between the low -temperature level refrigerating system, the evaporation -condensation ware be equipped with with coolant input port A and coolant delivery outlet A that high temperature level refrigerating system links to each other, and with low -temperature level refrigerating system link to each other by coolant input port A with by coolant delivery outlet A, low -temperature level refrigerating system includes the low -temperature level compressor the delivery outlet of low -temperature level compressor with it falls enthalpy heat transfer device to be equipped with the hydrojet that is used for cooling off the refrigerant between the coolant input port A. The utility model discloses can avoid discharge pressure overpressure protection appearing and shut down, but reduce the fault realizes continuous operation. Discharge pressure overpressure protection's the frequency had both been reduced, and the cryogenic refrigeration requirement can be guaranteed to reach again.
Description
Technical field
The utility model is related to a kind of cooling cycle system, more particularly to a kind of overlapping refrigerating cycle system.
Background technology
Refrigeration system generally comprises the capital equipments such as compressor bank, condenser, reservoir, expansion valve, evaporimeter, composition one
Individual cooling cycle system, can produce relatively low temperature, such as Ku Wen -35 DEG C of quick-freezer.
In order to produce lower temperature, such as -70 DEG C, -80 DEG C, storage frost is used for according to the requirement of industry standard red thin
Born of the same parents, then need to take overlapping refrigerating cycle system.The system is typically made up of high-temperature level and low-temperature level two parts, its high temperature
Level includes the capital equipments such as compressor, condenser, reservoir, expansion valve, evaporative condenser；Low-temperature level includes compressor, evaporation
The capital equipments such as condenser, expansion valve, evaporimeter.High-temperature level uses high-temperature level refrigeration agent, low-temperature level to use low-temperature level cold-producing medium.
The characteristics of low-temperature level cold-producing medium is that the evaporating temperature under an atmospheric pressure is relatively low.In the shutdown for not carrying out refrigerating operaton
Under state, cold-producing medium is filled in a gaseous form the whole low-temperature level system such as compressor bank, condenser, evaporimeter and its process pipe
In system, pressure is also higher, and the pressure balance of each several part is consistent.So in the stage for starting refrigerating operaton, because compressor is inhaled
The pressure at gas end is higher, causes the pressure of exhaust end higher, and Jing pressure at expulsion overpressure protection often occurs and shuts down, it is impossible to continuous fortune
Turn.If low-temperature level refrigerant charge in reduction system, although the frequency of pressure at expulsion overpressure protection can be reduced, but filled
The less low-temperature level cold-producing medium of note can not reach the refrigerating capacity of expected design again.
The content of the invention
The utility model provides a kind of overlapping refrigerating cycle system to solve technical problem present in known technology.
The utility model is adopted the technical scheme that to solve technical problem present in known technology：A kind of superposition type
Cooling cycle system, including high-temperature level refrigeration system and low-temperature level refrigeration system, the high-temperature level refrigeration system and the low temperature
Evaporative condenser is provided between level refrigeration system, the evaporative condenser is provided with the cooling being connected with the high-temperature level refrigeration system
Medium input port A and cooling medium delivery outlet A, and cooled medium input port A being connected with the low-temperature level refrigeration system
With cooled medium delivery outlet A；The low-temperature level refrigeration system includes low-temperature level compressor, in the defeated of the low-temperature level compressor
The hydrojet for cooling down cold-producing medium is provided between outlet and cooled medium input port A and drops enthalpy heat-exchanger rig.
The utility model can also be adopted the following technical scheme that：
The hydrojet drop enthalpy heat-exchanger rig includes the condenser pipe that cylindrical shell and cooled medium are flowed through, the condenser pipe
In the housing, between the housing two ends and the condensation pipe outer wall close, on the housing with the condenser pipe
Vertical direction is provided with cooling medium input port B and cooling medium delivery outlet B；The condenser pipe two ends are provided with port, respectively
Cooled medium input port B and cooled medium delivery outlet B, cooled medium input port B and the low-temperature level compressor
Delivery outlet is connected, and cooled medium delivery outlet B is connected with cooled medium input port A.
The low-temperature level refrigeration system also includes low-temperature level expansion valve and evaporimeter；Cooled medium delivery outlet A point
Into two-way, wherein being connected with the cooling medium input port B all the way, the low-temperature level expansion valve and the steaming are led up in addition
The input port for sending out device is connected；The delivery outlet of the evaporimeter and the cooling medium delivery outlet B with the low-temperature level compressor
Input port be connected.
The low-temperature level refrigeration system also includes capillary A, and cooled medium delivery outlet A passes through the capillary A
It is connected with the cooling medium input port B.
The low-temperature level refrigeration system also includes expansion drum, and cooled medium delivery outlet B point is two-way, wherein all the way
It is connected with cooled medium input port A, is connected with the input port of the expansion drum all the way in addition；The output of the expansion drum
Mouth is connected with the input port of the low-temperature level compressor.
The low-temperature level refrigeration system also includes capillary B, and the delivery outlet of the expansion drum is by the capillary B and institute
The input port for stating low-temperature level compressor is connected.
The low-temperature level refrigeration system also include magnetic valve, cooled medium delivery outlet A by the magnetic valve with
The cooling medium input port B is connected.
The low-temperature level refrigeration system also includes oil eliminator；The delivery outlet of the low-temperature level compressor passes through the oil
It is connected with cooled medium input port B from device.
Cooled medium input port A is provided with pressure sensor.
The high-temperature level refrigeration system includes that the high-temperature level compressor, condenser, reservoir and the high-temperature level that are sequentially connected are swollen
Swollen valve, the high-temperature level expansion valve is connected with the cooling medium input port A, the cooling medium delivery outlet A and the high temperature
The input port of level compressor is connected.
The utility model has the advantages and positive effects that：Including two-stage refrigeration, including high-temperature level refrigeration system with it is low
Warm level refrigeration system, is provided with evaporative condenser between high-temperature level refrigeration system and low-temperature level refrigeration system, and evaporative condenser is made
The condenser of evaporimeter and low-temperature level refrigeration system for high-temperature level refrigeration system is used；In the output of the low-temperature level compressor
The hydrojet for cooling down cold-producing medium is provided between mouth and cooled medium input port A of evaporative condenser and drops the evaporation of enthalpy heat-exchanger rig
Condenser, can reduce the temperature of low-temperature level cold-producing medium, it is to avoid low-temperature level cold-producing medium exists with overheated gaseous form, so as to reduce
The pressure of low-temperature level cold-producing medium, it is to avoid pressure at expulsion overpressure protection occur and shut down, failure can be reduced, realize continuously running.Both
The frequency of pressure at expulsion overpressure protection is reduced, be can guarantee that again and reached cryogenic refrigeration requirement.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation that enthalpy heat-exchanger rig drops in the hydrojet in the utility model.
In figure：1st, low-temperature level compressor；2nd, magnetic valve；3rd, hydrojet drop enthalpy heat-exchanger rig；4th, capillary A；5th, pressure sensing
Device；6th, high-temperature level compressor；7th, condenser；8th, reservoir；9th, evaporative condenser；10th, high-temperature level expansion valve；11st, capillary B；
12nd, expansion drum；13rd, low-temperature level expansion valve；14th, evaporimeter；15th, oil eliminator；31st, cooling medium input port B；32nd, cooling is situated between
Matter delivery outlet B；33rd, be cooled medium input port B；34th, be cooled medium delivery outlet B；91st, cooling medium input port A；92nd, it is cold
But medium delivery outlet A；93rd, be cooled medium input port A；94th, be cooled medium delivery outlet A；35th, the solder joint of adapter and housing.
Specific embodiment
For the content of the invention of the present utility model, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinated
Accompanying drawing describes in detail as follows：
Refer to Fig. 1～Fig. 2, a kind of overlapping refrigerating cycle system, including high-temperature level refrigeration system and low-temperature level refrigeration
System, is provided with evaporative condenser 9, the evaporative condenser between the high-temperature level refrigeration system and the low-temperature level refrigeration system
9 are provided with the cooling medium input port A91 and cooling medium delivery outlet A92 being connected with the high-temperature level refrigeration system, and with institute
State connected cooled medium input port A93 of low-temperature level refrigeration system and cooled medium delivery outlet A94；The low-temperature level refrigeration
System include low-temperature level compressor 1, the low-temperature level compressor 1 delivery outlet and cooled medium input port A93 it
Between the hydrojet that is provided with for cooling down cold-producing medium enthalpy heat-exchanger rig 3 drops.
The hydrojet drop enthalpy heat-exchanger rig 3 may include the condenser pipe that cylindrical shell and cooled medium are flowed through, described cold
Solidifying pipe is located in the housing, is closed between the housing two ends and the condensation pipe outer wall, cold with described on the housing
The vertical direction of solidifying pipe is provided with cooling medium input port B31 and cooling medium delivery outlet B32；The condenser pipe two ends are provided with end
Mouthful, be respectively cooled medium input port B33 and cooled medium delivery outlet B34, cooled medium input port B33 and institute
State the delivery outlet of low-temperature level compressor 1 to be connected, cooled medium delivery outlet B34 and the cooled medium input port A93 phase
Even.
The low-temperature level refrigeration system may also include low-temperature level expansion valve 13 and evaporimeter 14；The cooled medium output
Mouth A94 is divided into two-way, wherein can be connected with the cooling medium input port B31 all the way, can pass through the low temperature all the way in addition
Level expansion valve 13 is connected with the input port of the evaporimeter 14；The delivery outlet of the evaporimeter 14 and the cooling medium delivery outlet
B32 is connected with the input port of the low-temperature level compressor 1.The low-temperature level refrigeration system may also include capillary A4, described
Cooled medium delivery outlet A94 can be connected by the capillary A4 with the cooling medium input port B31.
The low-temperature level refrigeration system may also include expansion drum 12, and cooled medium delivery outlet B34 can be divided into two-way,
Wherein can be connected with cooled medium input port A93 all the way, can be connected with the input port of the expansion drum 12 all the way in addition；
The delivery outlet of the expansion drum 12 is connected with the input port of the low-temperature level compressor 1.The low-temperature level refrigeration system can also be wrapped
Include capillary B11, the delivery outlet of the expansion drum 12 can be by the input of the capillary B11 and the low-temperature level compressor 1
Mouth is connected.
The low-temperature level refrigeration system may also include magnetic valve 2, and cooled medium delivery outlet A94 can pass through the electricity
Magnet valve 2 is connected with the cooling medium input port B31.
The low-temperature level refrigeration system may also include oil eliminator 15；The delivery outlet of the low-temperature level compressor 1 can pass through
The oil eliminator 15 is connected with cooled medium input port B33.
Cooled medium input port A93 can be provided with pressure sensor 5, can be controlled by the detection of pressure sensor
The operating of system processed, such as can set when the pressure that pressure sensor 5 is perceived reaches preset value, feed flow branch line magnetic valve 2
Open.
The high-temperature level refrigeration system may include high-temperature level compressor 6, condenser 7, reservoir 8 and the high temperature being sequentially connected
Level expansion valve 10, the high-temperature level expansion valve 10 is connected with the cooling medium input port A91, the cooling medium delivery outlet
A92 is connected with the input port of the high-temperature level compressor 6.
Compressor air-discharging pipeline, can adopt the fluid copper pipe (GB product) of D16--D32.
Hydrojet capillary A, can adopt the fluid copper pipe (GB product) of D2--D3, can wound into spring shape reducing
The length for taking up room.
The housing of enthalpy heat-exchanger rig drops in hydrojet, can adopt the seamless steel pipe or fluid copper pipe (GB product) of D76--D159.
Adapter requires full weld with the solder joint 35 of housing.
The cooling medium output channel of enthalpy heat-exchanger rig drops in hydrojet, using the fluid copper pipe (GB product) of D10--D20.
Close between the cylindrical shell two ends of hydrojet drop enthalpy heat-exchanger rig and the condensation pipe outer wall, sealed using hemispherical
Head closing, the steel plate thickness for using drops enthalpy device case wall thickness, a class of the thickness that is above standard more than hydrojet.Two end sockets
Adopt between discharge duct outer wall after central aperture respectively and weld (requiring full weld)；Two end sockets drop enthalpy device shell with hydrojet
Using welding (requiring full weld) between body.
Operation principle of the present utility model：
Low-temperature level refrigerant vapour enters oil eliminator 15, from oil after the compression of low-temperature level compressor 1 through blast pipe
The low-temperature level cold-producing medium out of separator 15, hydrojet drop enthalpy heat-exchanger rig 3 was initially entered before evaporative condenser 9 is entered and is dropped
Enthalpy reduces pressure, and then enters back into evaporative condenser 9 and is condensed into liquid.
The operation principle of enthalpy heat-exchanger rig 3 drops in hydrojet：Low-temperature level cold-producing medium is condensed into liquid in evaporative condenser 9
Afterwards, before the expansion valve of devaporation device 14 is fed, feed flow branch line all the way is drawn, installs magnetic valve 2, capillary, and
The gas exhaust piping of low-temperature level compressor 1 arranges pressure sensor 5.In refrigeration system initial operation stage, when pressure sensor 5 is felt
The pressure known reaches preset value, and feed flow branch line magnetic valve 2 is opened, and low-temperature level refrigerant liquid subtracts through capillary A4 expansions
Pressure, hydrojet evaporation in the space between the shell that enthalpy heat-exchanger rig 3 drops in hydrojet flows through the pipe of hydrojet drop enthalpy heat-exchanger rig 3
Enthalpy decompression is dropped in the low-temperature level refrigerant vapour of inner high voltage high temperature, so as to avoid the protectiveness of low-temperature level compressor 1 from shutting down phenomenon, is reached
To the expected purpose of the continuous safe operation of refrigeration system.Wherein low temperature of the feed flow branch line after capillary A4 expansion decompressions
Level cold-producing medium becomes gaseous state, is sucked by low-temperature level compressor 1 through return-air duct.When the pressure that pressure sensor 5 is perceived is dropped to
During less than preset value, feed flow branch line magnetic valve 2 is closed, and hydrojet drop enthalpy heat-exchanger rig 3 then enters off working state.
Low-temperature level cold-producing medium enters back into quilt in evaporative condenser 9 after being reduced pressure by drop enthalpy through hydrojet drop enthalpy heat-exchanger rig 3
Liquid is condensed into, then heat refrigeration is absorbed into evaporimeter 14 through the expansion decompression of low-temperature level expansion valve 13 again, evaporimeter is made
14 spaces being located lower the temperature and reach expected requirement, such as -70 DEG C, -80 DEG C, and the liquid refrigerant of low-temperature level is in evaporimeter 14
In flash to gaseous state, the low-temperature level cold-producing medium in the gaseous low-temperature level cold-producing medium and above-mentioned return-air duct, jointly by low-temperature level
The suction of compressor 1 carries out next compression process, so as to form the refrigerative circle system of low-temperature level part.
Embodiment described above is merely to illustrate technological thought of the present utility model and feature, its object is to make ability
Technical staff in domain is it will be appreciated that content of the present utility model and implement according to this, it is impossible to only limit this practicality with the present embodiment
New the scope of the claims, i.e., equal change or modification that the spirit disclosed in all the utility model is made still fall new in this practicality
In the scope of the claims of type.
Claims (10)
1. a kind of overlapping refrigerating cycle system, it is characterised in that including high-temperature level refrigeration system and low-temperature level refrigeration system, institute
State and evaporative condenser is provided between high-temperature level refrigeration system and the low-temperature level refrigeration system, the evaporative condenser is provided with and institute
High-temperature level refrigeration system connected cooling medium input port A and cooling medium delivery outlet A is stated, and is with low-temperature level refrigeration
Connected cooled medium input port A of system and cooled medium delivery outlet A；The low-temperature level refrigeration system is compressed including low-temperature level
Machine, is provided with for cooling down cold-producing medium between the delivery outlet and cooled medium input port A of the low-temperature level compressor
Enthalpy heat-exchanger rig drops in hydrojet.
2. overlapping refrigerating cycle system according to claim 1, it is characterised in that enthalpy heat-exchanger rig bag drops in the hydrojet
Include the condenser pipe that cylindrical shell and cooled medium are flowed through, the condenser pipe is located in the housing, the housing two ends and
Close between the condensation pipe outer wall, cooling medium input port B is provided with the direction vertical with the condenser pipe on the housing
With cooling medium delivery outlet B；The condenser pipe two ends are provided with port, and be respectively cooled medium input port B and cooled medium
Delivery outlet B, cooled medium input port B is connected with the low-temperature level compressor delivery outlet, the cooled medium output
Mouth B is connected with cooled medium input port A.
3. overlapping refrigerating cycle system according to claim 2, it is characterised in that the low-temperature level refrigeration system is also wrapped
Include low-temperature level expansion valve and evaporimeter；Cooled medium delivery outlet A is divided into two-way, wherein defeated with the cooling medium all the way
Entrance B is connected, and the low-temperature level expansion valve is led up in addition and is connected with the input port of the evaporimeter；The evaporimeter it is defeated
Outlet and the cooling medium delivery outlet B are connected with the input port of the low-temperature level compressor.
4. overlapping refrigerating cycle system according to claim 3, it is characterised in that the low-temperature level refrigeration system is also wrapped
Capillary A is included, cooled medium delivery outlet A is connected by the capillary A with the cooling medium input port B.
5. overlapping refrigerating cycle system according to claim 2, it is characterised in that the low-temperature level refrigeration system is also wrapped
Expansion drum is included, cooled medium delivery outlet B point is two-way, wherein be connected with cooled medium input port A all the way, separately
It is connected with the input port of the expansion drum all the way outward；The input port phase of the delivery outlet of the expansion drum and the low-temperature level compressor
Even.
6. overlapping refrigerating cycle system according to claim 5, it is characterised in that the low-temperature level refrigeration system is also wrapped
Capillary B is included, the delivery outlet of the expansion drum is connected by the capillary B with the input port of the low-temperature level compressor.
7. overlapping refrigerating cycle system according to claim 2, it is characterised in that the low-temperature level refrigeration system is also wrapped
Magnetic valve is included, cooled medium delivery outlet A is connected by the magnetic valve with the cooling medium input port B.
8. overlapping refrigerating cycle system according to claim 2, it is characterised in that the low-temperature level refrigeration system is also wrapped
Include oil eliminator；The delivery outlet of the low-temperature level compressor is by the oil eliminator and the cooled medium input port B phase
Even.
9. overlapping refrigerating cycle system according to claim 1, it is characterised in that cooled medium input port A
It is provided with pressure sensor.
10. overlapping refrigerating cycle system according to claim 1, it is characterised in that the high-temperature level refrigeration system bag
High-temperature level compressor, condenser, reservoir and the high-temperature level expansion valve being sequentially connected is included, the high-temperature level expansion valve is cold with described
But medium input port A is connected, and the cooling medium delivery outlet A is connected with the input port of the high-temperature level compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621098622.3U CN206094626U (en) | 2016-09-30 | 2016-09-30 | Cascade refrigeration circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621098622.3U CN206094626U (en) | 2016-09-30 | 2016-09-30 | Cascade refrigeration circulation system |
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| Publication Number | Publication Date |
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| CN206094626U true CN206094626U (en) | 2017-04-12 |
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ID=58481006
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621098622.3U Expired - Fee Related CN206094626U (en) | 2016-09-30 | 2016-09-30 | Cascade refrigeration circulation system |
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| Country | Link |
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| CN (1) | CN206094626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225286A (en) * | 2016-09-30 | 2016-12-14 | 天津市天商冰源科技发展有限公司 | A kind of overlapping refrigerating cycle system |
| CN111913099A (en) * | 2020-10-13 | 2020-11-10 | 天津金海通自动化设备制造有限公司 | Refrigeration module, temperature control device of test equipment and temperature control method |
-
2016
- 2016-09-30 CN CN201621098622.3U patent/CN206094626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225286A (en) * | 2016-09-30 | 2016-12-14 | 天津市天商冰源科技发展有限公司 | A kind of overlapping refrigerating cycle system |
| CN111913099A (en) * | 2020-10-13 | 2020-11-10 | 天津金海通自动化设备制造有限公司 | Refrigeration module, temperature control device of test equipment and temperature control method |
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