CN206377883U - The refrigeration system of Two-stage Compression and autocascade cycle can be realized - Google Patents
The refrigeration system of Two-stage Compression and autocascade cycle can be realized Download PDFInfo
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- CN206377883U CN206377883U CN201621435435.XU CN201621435435U CN206377883U CN 206377883 U CN206377883 U CN 206377883U CN 201621435435 U CN201621435435 U CN 201621435435U CN 206377883 U CN206377883 U CN 206377883U
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Abstract
The refrigeration system of Two-stage Compression and autocascade cycle can be realized the utility model discloses a kind of.The exhaust outlet of compressor of the utility model first is connected with condenser inlet, condensator outlet respectively with the 3rd stop valve import, first throttle valve import is connected, 3rd cut-off valve outlet condenses side outlet with condenser/evaporator respectively, second throttle import is connected, second throttle outlet is connected by evaporator with the second compressor air suction mouthful, second exhaust outlet of compressor respectively with the first stop valve import, second stop valve import is connected, first cut-off valve outlet is connected with condenser/evaporator condensation side-entrance, first throttle valve outlet respectively with the 5th stop valve import, 4th stop valve import is connected, 5th cut-off valve outlet is connected with condenser/evaporator evaporation side-entrance, condenser/evaporator evaporates side outlet, 4th cut-off valve outlet, second cut-off valve outlet is connected with the first compressor air suction mouthful.The utility model can carry out the comparative experiments of two kinds of circulations on an experimental bench.
Description
Technical field
The utility model is related to a kind of refrigeration system, in particular, and two-stage compression cycle can both be realized by being related to, and again may be used
To realize the refrigeration system of autocascade cycle, for doing systematic comparison experiment and Related product exploitation.
Background technology
Due to being limited by compressor suction and discharge compression ratio, single stage compress kind of refrigeration cycle is not suitable for environment temperature and system
The larger system of cold temperature difference.In the prior art, when the temperature difference of freezing is larger, generally using using two-stage compression refrigeration system
System, and the bigger temperature difference uses cascade refrigeration system.Traditional cascade refrigeration system is made up of two working medium, due to one of them
Working medium is in a supercritical state at normal temperatures, so needing to install expansion vessel, system complex additional in systems.
Either simplex matter cascade refrigeration system has simple in construction, the low advantage of running temperature, but itself and two-stage compression refrigeration system
Comparison between system is just relatively difficult.Prior art carries out experimental study using two covering devices, and system is huge and cost is high.
Utility model content
The utility model is, in order to overcome defect of the prior art, Two-stage Compression energy again can be realized by providing one kind
The system for realizing autocascade cycle, comparative experiments and the exploitation of Related product for system.
The utility model is achieved through the following technical solutions：
A kind of to realize the refrigeration system of Two-stage Compression and autocascade cycle, system is by the first compressor, the second compressor, cold
Condenser, first throttle valve, second throttle, condenser/evaporator, evaporator, the first stop valve, the second stop valve, the 3rd cut-off
Valve, the 4th stop valve, the 5th stop valve composition, the first exhaust outlet of compressor are connected with condenser inlet, condensator outlet difference
Be connected with the 3rd stop valve import, first throttle valve import, the 3rd cut-off valve outlet respectively with condenser/evaporator condensation side outlet,
Second throttle import is connected, and second throttle outlet is connected by evaporator with the second compressor air suction mouthful, the second compressor
Exhaust outlet is connected with the first stop valve import, the second stop valve import respectively, and the first cut-off valve outlet is condensed with condenser/evaporator
Side-entrance is connected, and first throttle valve outlet is connected with the 5th stop valve import, the 4th stop valve import respectively, and the 5th stop valve goes out
Mouth is connected with condenser/evaporator evaporation side-entrance, and condenser/evaporator evaporation side outlet, the 4th cut-off valve outlet, the second stop valve go out
Mouth is connected with the first compressor air suction mouthful.
When being circulated as two-stage compression refrigeration, the first stop valve, the 5th stop valve are closed, the second stop valve, the 3rd cut-off
Valve, the 4th stop valve are opened, and the second compressor sucks low-pressure refrigerant vapor from evaporator, is compressed to the superheat refrigeration after middle pressure
Agent throttles to the gas-liquid mixed refrigerant after middle pressure with first throttle valve and is mixed into the first compressor, is compressed to row after high pressure and arrives
Highly pressurised liquid is condensed into condenser, the high pressure refrigerant liquid flowed out from condenser is divided into two parts, and a part is by first
Choke valve throttles to be pressed into carries out second level compression into the first compressor, and another part throttles to low pressure by second throttle
Enter in evaporator and evaporate, produce refrigeration phenomenon, the low-pressure refrigerant vapor come out from evaporator enters the second compressor and carries out the
One stage of compression, completes two-stage compression refrigeration circulation.
When being circulated as cascade refrigeration, the second stop valve, the 3rd stop valve, the 4th stop valve are closed, the first stop valve, the
Five stop valves are opened, and the second compressor sucks low-pressure refrigerant vapor as low-temperature level compressor from evaporator, is compressed to middle pressure
Condenser/evaporator condensation side enters in condenser/evaporator and condensed afterwards, transfers heat to high-temperature level, condensed middle press liquid warp
Second throttle throttling, which enters in evaporator, evaporates, and produces refrigeration phenomenon；Second compressor is as high-temperature level compressor from condensation
Compression refrigerant steam in the evaporation side suction of evaporator, is compressed to after high pressure and enters condensation, condensed high pressure liquid in condenser
Body throttles to middle pressure from condenser/evaporator evaporation side into evaporation in condenser/evaporator through first throttle valve, absorbs low-temperature level heat
Enter afterwards in the first compressor and compress, complete cascade refrigeration circulation.Wherein because condenser/evaporator has heat transfer temperature difference, the second pressure
The middle pressure of contracting machine exhaust end should be more slightly higher than the middle pressure at the first compressor air suction end.
First compressor and second compressor are vortex or rotator type.
The first throttle valve and the second throttle are electric expansion valve, heating power expansion valve, capillary or orifice plate section
Flow device.
The heat exchanger pattern of the condenser, the evaporator and the condenser/evaporator is not limited, and can be air-cooled or water
Cold or plate type heat exchanger or shell and tube exchanger etc..
First stop valve, second stop valve, the 3rd stop valve, the 4th stop valve, the described 5th
Stop valve can be ball valve or other pattern stop valves, can also be replaced with motor-driven valve.
Compared with prior art, the beneficial effects of the utility model are：
1st, system functionality is strong：The utility model system can realize that two-stage compression refrigeration is circulated, and overlapping system can be realized again
SAPMAC method, can carry out the comparative experiments of two kinds of circulations on an experimental bench.
2nd, simple system：The utility model system architecture is simple, can simply carry out the switching of two kinds of kind of refrigeration cycle.
Brief description of the drawings
Fig. 1, which show the utility model, can realize the refrigeration system schematic diagram of Two-stage Compression and autocascade cycle.
In figure：The compressors of 1-1. first, the compressors of 1-2. second, 2. condensers, 3-1. first throttle valves, 3-2. second sections
Flow valve, 4. condenser/evaporators, 5. evaporators, the stop valves of 6-1. first, the stop valves of 6-2. second, the stop valves of 6-3. the 3rd, 6-4.
4th stop valve, the stop valves of 6-5. the 5th.
Embodiment
The utility model is described in detail below in conjunction with the drawings and specific embodiments.
The refrigeration system schematic diagram of the present utility model that Two-stage Compression and autocascade cycle can be realized is referring to Fig. 1, including first
Compressor 1-1, the second compressor 1-2, condenser 2, first throttle valve 3-1, second throttle 3-2, condenser/evaporator 4, evaporation
Device 5, the first stop valve 6-1, the second stop valve 6-2, the 3rd stop valve 6-3, the 4th stop valve 6-4, the 5th stop valve 6-5.Institute
The first compressor 1-1 exhaust outlets are stated to be connected with the import of condenser 2, the condenser 2 export respectively with the 3rd cut-off
Valve 6-3 imports, first throttle valve 3-1 imports connection, the 3rd stop valve 6-3 outlet respectively with the condenser/evaporator
4 condensation side outlets, second throttle 3-2 imports connection, second throttle 3-2 outlet by the evaporator 5 with
The second compressor 1-2 air entries connection, the second compressor 1-2 exhaust outlets enter with the first stop valve 6-1 respectively
Mouth, the second stop valve 6-2 imports connection, the first stop valve 6-1 outlets condense side-entrance with the condenser/evaporator 4
Connection, the first throttle valve 3-1 outlets connect with the 5th stop valve 6-5 imports, the 4th stop valve 6-4 imports respectively
Connect, the 5th stop valve 6-5 outlets are connected with the condenser/evaporator 4 evaporation side-entrance, the evaporation side of condenser/evaporator 4
Outlet, the 4th stop valve 6-4 outlets, the second stop valve 6-2 outlets connect with the first compressor 1-1 air entries
Connect.
When being circulated as two-stage compression refrigeration, the first stop valve 6-1, the 5th stop valve 6-5 are closed, the second stop valve 6-2,
3rd stop valve 6-3, the 4th stop valve 6-4 are opened, and the second compressor 1-2 sucks low-pressure refrigerant vapor, compression from evaporator
Superheated refrigerant after to middle pressure throttles to the gas-liquid mixed refrigerant after middle pressure with first throttle valve 3-1 is mixed into the first pressure
Contracting machine 1-1, is compressed to after high pressure and arranges in condenser 2 the high-pressure refrigerant liquid for being condensed into highly pressurised liquid, being flowed out from condenser 2
Body is divided into two parts, and a part is throttled to be pressed into by first throttle valve 3-1 carries out second level compression into the first compressor 1-1,
Another part throttles to low pressure to enter in evaporator 5 by second throttle 3-2 to be evaporated, and is produced refrigeration phenomenon, is come out from evaporator 5
Low-pressure refrigerant vapor enter the second compressor 1-2 carry out first order compression, complete two-stage compression refrigeration circulation.
When being circulated as cascade refrigeration, the second stop valve 6-2, the 3rd stop valve 6-3, the 4th stop valve 6-4 are closed, and first
Stop valve 6-1, the 5th stop valve 6-5 are opened, and the second compressor 1-2 sucks low pressure system as low-temperature level compressor from evaporator 5
Refrigerant vapor, is compressed to after middle pressure from the condensation side of condenser/evaporator 4 and enters condensation in condenser/evaporator 4, transfer heat to height
Warm level, condensed middle press liquid enters in evaporator 5 through second throttle 3-2 throttlings to be evaporated, and produces refrigeration phenomenon；Second pressure
Contracting machine 1-2 compression refrigerant steams from the evaporation side suction of condenser/evaporator 4 as high-temperature level compressor, are compressed to high pressure laggard
Enter in condenser 2 and condense, condensed highly pressurised liquid throttles to middle through first throttle valve 3-1 and pressed from the evaporation side of condenser/evaporator 4
Evaporated into condenser/evaporator 4, absorb to enter in the first compressor 1-1 after low-temperature level heat and compress, complete cascade refrigeration and follow
Ring.Wherein because condenser/evaporator 4 has heat transfer temperature difference, the middle pressure of the second compressor 1-2 exhaust ends should be than the first compressor
The middle pressure of 1-1 suction ends is slightly higher.
Described above is only preferred embodiment of the present utility model, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection domain of the present utility model.
Claims (3)
1. a kind of can realize the refrigeration system of Two-stage Compression and autocascade cycle, it is characterised in that system is by the first compressor, second
Compressor, condenser, first throttle valve, second throttle, condenser/evaporator, evaporator, the first stop valve, the second stop valve,
3rd stop valve, the 4th stop valve and the 5th stop valve composition, first exhaust outlet of compressor is connected with condenser inlet, cold
Condenser outlet be connected respectively with the 3rd stop valve import, first throttle valve import, the 3rd end valve outlet respectively with condensation evaporation
Device condensation side outlet, second throttle import connection, evaporator and the second compressor air suction mouthful are passed through even in second throttle outlet
Connect, the second exhaust outlet of compressor is connected with the first stop valve import, the second stop valve import respectively, first cut-off valve outlet with it is cold
Solidifying evaporator condensation side-entrance connection, first throttle valve outlet is connected with the 5th stop valve import, the 4th stop valve import respectively,
5th cut-off valve outlet and condenser/evaporator evaporation side-entrance be connected, condenser/evaporator evaporate side outlet, the 4th end valve outlet,
Second cut-off valve outlet is connected with the first compressor air suction mouthful.
A kind of the refrigeration system of Two-stage Compression and autocascade cycle can be realized 2. according to claim 1, it is characterised in that institute
It is vortex or rotator type to state the first compressor and second compressor.
A kind of the refrigeration system of Two-stage Compression and autocascade cycle can be realized 3. according to claim 1, it is characterised in that institute
It is electric expansion valve, heating power expansion valve, capillary or throttle orifice plate apparatus to state first throttle valve and the second throttle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435435.XU CN206377883U (en) | 2016-12-26 | 2016-12-26 | The refrigeration system of Two-stage Compression and autocascade cycle can be realized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435435.XU CN206377883U (en) | 2016-12-26 | 2016-12-26 | The refrigeration system of Two-stage Compression and autocascade cycle can be realized |
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| Publication Number | Publication Date |
|---|---|
| CN206377883U true CN206377883U (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621435435.XU Expired - Fee Related CN206377883U (en) | 2016-12-26 | 2016-12-26 | The refrigeration system of Two-stage Compression and autocascade cycle can be realized |
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| CN (1) | CN206377883U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766353A (en) * | 2016-12-26 | 2017-05-31 | 天津商业大学 | The refrigeration system of Two-stage Compression and autocascade cycle can be realized |
| CN109869944A (en) * | 2019-03-26 | 2019-06-11 | 天津商业大学 | Absorption supercooling refrigeration system |
-
2016
- 2016-12-26 CN CN201621435435.XU patent/CN206377883U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766353A (en) * | 2016-12-26 | 2017-05-31 | 天津商业大学 | The refrigeration system of Two-stage Compression and autocascade cycle can be realized |
| CN106766353B (en) * | 2016-12-26 | 2019-11-22 | 天津商业大学 | It is able to achieve the refrigeration system of Two-stage Compression and autocascade cycle |
| CN109869944A (en) * | 2019-03-26 | 2019-06-11 | 天津商业大学 | Absorption supercooling refrigeration system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170804 Termination date: 20171226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |