CN115031421A - Low-temperature skid-mounted refrigerating unit of hydrogenation machine - Google Patents
Low-temperature skid-mounted refrigerating unit of hydrogenation machine Download PDFInfo
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- CN115031421A CN115031421A CN202210392607.3A CN202210392607A CN115031421A CN 115031421 A CN115031421 A CN 115031421A CN 202210392607 A CN202210392607 A CN 202210392607A CN 115031421 A CN115031421 A CN 115031421A
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000005057 refrigeration Methods 0.000 claims abstract description 34
- 238000007710 freezing Methods 0.000 claims abstract description 31
- 230000008014 freezing Effects 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 239000003507 refrigerant Substances 0.000 claims description 57
- 239000007788 liquid Substances 0.000 claims description 33
- 238000001035 drying Methods 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 18
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 11
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Images
Classifications
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to a low-temperature skid-mounted refrigerating unit of a hydrogenation machine, which comprises a high-temperature-level refrigerating system, a low-temperature-level refrigerating system and a water cooling system, wherein the high-temperature-level refrigerating system is connected with the low-temperature-level refrigerating system; the high-temperature-stage refrigeration system comprises a high-temperature-stage compressor, an evaporative condenser and a high-temperature-stage evaporator, and a refrigeration cycle is formed; the low-temperature stage refrigeration system comprises a low-temperature stage compressor and a low-temperature stage evaporator to form a refrigeration cycle; the water cooling system comprises a freezing water tank and a low-temperature-level evaporator, the freezing water tank is connected with a freezing water inlet of the low-temperature-level evaporator, a freezing water outlet of the low-temperature-level evaporator is connected with peripheral cooled equipment, and the peripheral cooled equipment is connected with the freezing water tank through a freezing water inlet to complete refrigeration cycle. The invention adopts a cascade vapor compression refrigeration system, improves the temperature difference between the chilled water and the high-pressure hydrogen and improves the cooling effect of the high-pressure hydrogen. The invention adopts a cascade vapor compression refrigeration system, improves the temperature difference between the chilled water and the high-pressure hydrogen and improves the cooling effect.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, particularly relates to a low-temperature skid-mounted refrigerating unit of a hydrogenation machine, and particularly relates to a low-temperature skid-mounted refrigerating unit of a 70MPa hydrogenation machine.
Background
The skid-mounted refrigerating unit of the hydrogenation machine is mainly applied to cooling hydrogen when a new energy hydrogenation vehicle is filled with higher-pressure hydrogen fuel, the hydrogenation machine is used for filling hydrogen into a hydrogen energy vehicle to obtain more, faster and safe hydrogen to be injected into a hydrogen energy vehicle hydrogen storage tank when working, the hydrogen in the hydrogen storage tank of a hydrogenation station needs to be cooled from the ambient temperature to the optimal design of entering the hydrogen storage tank of an automobile and the use temperature point (-35 ℃ -45 ℃), the low-temperature heat exchange in the process needs to be carried out by the low-temperature skid-mounted refrigerating unit to provide refrigerating fluid as a cold source, the cold source circulates through a heat exchanger to exchange heat with the hydrogen, and the hydrogen is cooled from the normal temperature to-35 ℃ -45 ℃. In the prior art, a hydrogenation machine requires stable temperature for hydrogen cooling, and in addition, the energy consumption is controlled as much as possible, and the cost is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-temperature skid-mounted refrigerating unit of a hydrogenation machine, which adopts a cascade type vapor compression refrigerating system to improve the temperature difference between chilled water and high-pressure hydrogen and improve the cooling effect.
In order to solve the technical problem, the invention adopts a technical scheme that: the low-temperature skid-mounted refrigerating unit of the hydrogenation machine comprises a high-temperature-level refrigerating system, a low-temperature-level refrigerating system and a water cooling system;
the high-temperature-stage refrigeration system comprises a high-temperature-stage compressor, wherein an exhaust port of the high-temperature-stage compressor is connected with a high-temperature-stage oil separator, a refrigerant outlet of the high-temperature-stage oil separator is connected with an evaporative condenser, an oil outlet of the high-temperature-stage oil separator is connected with an oil cavity of the high-temperature-stage compressor, an outlet of the evaporative condenser is connected with a high-temperature-stage expansion valve, the high-temperature-stage expansion valve is connected with a high-temperature-stage evaporator, and an outlet of the high-temperature-stage evaporator is connected with the high-temperature-stage compressor to complete a refrigeration cycle;
the low-temperature-stage refrigeration system comprises a low-temperature-stage compressor, wherein an exhaust port of the low-temperature-stage compressor is connected with a low-temperature-stage oil separator, a refrigerant outlet of the low-temperature-stage oil separator is connected with a high-temperature-stage evaporator, the high-temperature-stage evaporator is connected with a heat regenerator, the heat regenerator is connected with a refrigerant side inlet of the low-temperature-stage evaporator, a refrigerant side outlet of the low-temperature-stage evaporator is connected with the heat regenerator, and an outlet of the heat regenerator is connected with an air suction port of the low-temperature-stage compressor;
the water cooling system comprises a freezing water tank and a low-temperature-level evaporator, the freezing water tank is connected with a freezing water inlet of the low-temperature-level evaporator, a freezing water outlet of the low-temperature-level evaporator is connected with peripheral cooled equipment, and the peripheral cooled equipment is connected with the freezing water tank through a freezing water inlet to complete refrigeration cycle.
Furthermore, the outlet of the evaporative condenser is connected with a high-temperature-stage liquid receiver, the outlet end of the high-temperature-stage liquid receiver is connected with a high-temperature-stage drying filter, the high-temperature-stage drying filter is connected with a high-temperature-stage expansion valve, and the high-temperature-stage expansion valve is connected with a high-temperature-stage evaporator.
Further, an oil outlet of the low-temperature stage oil separator is connected with an oil cavity of the low-temperature stage compressor.
Further, a refrigerant outlet of the low-temperature-stage oil separator is connected with an expansion tank.
Furthermore, the high-temperature-stage evaporator is connected with the low-temperature-stage liquid receiver, the low-temperature-stage liquid receiver is connected with the low-temperature-stage drying filter, and the low-temperature-stage drying filter is connected with the heat regenerator.
Further, the heat regenerator is connected with a refrigerant side inlet of the low-temperature-stage evaporator through a low-temperature-stage expansion valve.
Further, a chilled water outlet of the low-temperature-stage evaporator is connected with the chilled water tank through a return bypass valve.
Furthermore, the freezing water tank is connected with a freezing water inlet of the low-temperature stage evaporator through a freezing water pump.
The advantages of the invention are as follows:
the low-temperature skid-mounted refrigerating unit of the hydrogenation machine adopts an integrated structure, adopts a cascade type steam compression refrigerating system for refrigeration, improves the temperature difference between chilled water and high-pressure hydrogen, improves the cooling effect of the high-pressure hydrogen, and enables the temperature of the high-pressure hydrogen to be more stable at 70 MPa.
Drawings
FIG. 1 is a flow diagram of a low temperature skid-mounted refrigeration unit for a hydrogenation unit according to the present invention.
Description of reference numerals: the system comprises a condenser 1, a reflux bypass valve 2, a chilled water pump 3, a low-temperature oil separator 4, a high-temperature oil separator 5, a heat regenerator 6, a high-temperature liquid reservoir 7, a low-temperature compressor 8, a high-temperature compressor 9, a low-temperature drying filter 10, a high-temperature drying filter 11, an expansion tank 12, a high-temperature expansion valve 13, a low-temperature evaporator 14, a high-temperature evaporator 15, a low-temperature liquid reservoir 16, a low-temperature expansion valve 17, a chilled water tank 18, a chilled water inlet 19 and a chilled water outlet 20.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be embodied in other specific forms than those described herein, and it will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention.
As shown in FIG. 1, the low-temperature skid-mounted refrigerating unit of the hydrogenation machine comprises a high-temperature-level refrigerating system, a low-temperature-level refrigerating system and a water cooling system.
The high-temperature-stage refrigeration system comprises a high-temperature-stage compressor 9, a high-temperature-stage evaporator 15, an evaporative condenser 1, a high-temperature-stage oil separator 5, a high-temperature-stage liquid receiver 7, a high-temperature-stage drying filter 11 and a high-temperature-stage expansion valve 13; an exhaust port of the high-stage compressor 9 is connected with the high-temperature-stage oil separator 5, a refrigerant outlet of the high-temperature-stage oil separator 5 is connected with the evaporative condenser 1, an oil outlet of the high-temperature-stage oil separator 5 is connected with an oil cavity of the high-temperature-stage compressor 9, an outlet of the evaporative condenser 1 is connected with the high-temperature-stage liquid receiver 7, an outlet end of the high-temperature-stage liquid receiver 7 is connected with the high-temperature-stage drying filter 11, the high-temperature-stage drying filter 11 is connected with the high-temperature-stage expansion valve 13, the high-temperature-stage expansion valve 13 is connected with the high-temperature-stage evaporator 15, and an outlet of the high-temperature-stage evaporator 15 is connected with the high-temperature-stage compressor 9 to complete a refrigeration cycle.
The low-temperature-stage refrigeration system comprises a low-temperature-stage compressor 8, a low-temperature-stage evaporator 14, a low-temperature-stage oil separator 4, a low-temperature-stage drying filter 10, a low-temperature-stage liquid receiver 16 and a low-temperature-stage expansion valve 17; an air outlet of the low-temperature-stage compressor 8 is connected with the low-temperature-stage oil separator 4, an oil outlet of the low-temperature-stage oil separator 4 is connected with an oil cavity of the low-temperature-stage compressor 8, a refrigerant outlet of the low-temperature-stage oil separator 4 is respectively connected with the expansion tank 12 and the high-temperature-stage evaporator 15, the high-temperature-stage evaporator 15 is connected with the low-temperature-stage liquid reservoir 16, the low-temperature-stage liquid reservoir 16 is connected with the low-temperature-stage drying filter 10, the low-temperature-stage drying filter 10 is connected with the heat regenerator 6, the heat regenerator 6 is connected with a refrigerant side inlet of the low-temperature-stage evaporator 14 through the low-temperature-stage expansion valve 17, a refrigerant side outlet of the low-temperature-stage evaporator 14 is connected with the heat regenerator 6, and an outlet of the heat regenerator 6 is respectively connected with the expansion valve 12 and an air suction port of the low-temperature-stage compressor 8, so that a refrigeration cycle is completed.
The water cooling system comprises a freezing water tank 18 and a low-temperature stage evaporator 14, wherein the freezing water tank 18 is connected with a freezing water inlet of the low-temperature stage evaporator 14 through a freezing water pump 3, a freezing water outlet 20 of the low-temperature stage evaporator 14 is connected with peripheral cooled equipment, and the peripheral cooled equipment is connected with the freezing water tank 18 through a freezing water inlet 19 to complete refrigeration cycle; the chilled water in the chilled water tank 18 is pumped out by the chilled water pump 3, enters the low-temperature stage evaporator 14, exchanges heat with the refrigerant, the cold-side refrigerant absorbs heat to reduce the temperature of the cooling water at the hot side, then goes out, enters the peripheral chilled equipment, and returns to the chilled water tank 18 after a circle of circulation; in addition, the chilled water outlet of the low-temperature stage evaporator 14 is connected with the chilled water tank 18 through a return-bypass valve 2, so that the outlet water flow can be adjusted.
The working principle of the invention is as follows:
high-temperature-stage system:
the high-temperature stage compressor 9 sucks low-temperature and low-pressure gas refrigerant from a suction end, the gas refrigerant is compressed into high-temperature and high-pressure gas refrigerant through the high-temperature stage compressor 9, the high-temperature and high-pressure gas refrigerant is discharged from a gas outlet and enters the high-temperature stage oil separator 5 through a gas discharge pipeline, the gas refrigerant is separated from the refrigeration oil through the high-temperature stage oil separator 5, the refrigerant enters the evaporative condenser 1, the refrigeration oil is sucked into an oil cavity of the high-temperature stage compressor 9, the high-temperature and high-pressure gas refrigerant is condensed and released through the evaporative condenser 1 to be converted into high-temperature and high-pressure liquid refrigerant, the liquid refrigerant flows into the high-temperature stage liquid receiver 7, is discharged after liquid storage, passes through the high-temperature stage drying filter 11 and then enters the high-temperature stage expansion valve 13, and the high-temperature and high-pressure liquid refrigerant is throttled into low-temperature and low-pressure liquid refrigerant through the throttling function of the high-temperature stage expansion valve 13, then enters the high-temperature stage evaporator 15 to absorb heat and evaporate to form a low-temperature low-pressure gas state, and then is sent to the inlet of the high-temperature stage compressor 9 to complete a refrigeration cycle.
Low-temperature system:
the low-temperature stage compressor 8 sucks low-temperature and low-pressure gaseous refrigerant from a suction end, the low-temperature stage compressor 8 compresses the gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, the high-temperature and high-pressure gaseous refrigerant is discharged from a gas discharge port, the gaseous refrigerant flows into the low-temperature stage oil separator 4 through a gas discharge pipeline, the gaseous refrigerant is separated from the refrigeration oil through the low-temperature stage oil separator 4, the refrigeration oil is sucked into an oil cavity of the low-temperature stage compressor 8, the refrigerant is divided into two paths, one path of the refrigerant is communicated with the expansion tank 12, the refrigerant is expanded and decompressed during operation or shutdown so as to obtain the safety pressure of the system, the other path of the refrigerant enters the condenser side of the high-temperature stage evaporator 15 and exchanges heat with the evaporator side of the high-temperature stage evaporator 15, the refrigerant is condensed into high-temperature and high-pressure liquid refrigerant, the high-temperature and high-pressure liquid refrigerant enters the low-temperature stage liquid reservoir 16 and is discharged after liquid storage, the refrigerant passes through the low-temperature stage drying filter 10, the regenerator 6 for supercooling, and then the refrigerant passes through the low-temperature stage expansion valve 17, the high-temperature high-pressure liquid refrigerant is throttled and converted into a low-temperature low-pressure liquid refrigerant, the low-temperature low-pressure liquid refrigerant enters the low-temperature stage evaporator 14 to absorb heat and evaporate, the low-temperature low-pressure liquid refrigerant exchanges heat with chilled water to absorb heat of the chilled water, the low-temperature low-pressure liquid refrigerant is evaporated into a low-temperature low-pressure gaseous refrigerant, the low-temperature low-pressure gaseous refrigerant then exits and enters the heat regenerator 6 to be overheated, the low-temperature low-pressure gaseous refrigerant exchanges heat with the high-temperature high-pressure liquid refrigerant, the refrigerating capacity of a system is improved, the saturated return temperature is improved, the liquid in the air suction of the compressor is improved, the refrigerant exits again, one path bypasses the expansion tank 12, and the other path returns to the air suction port of the low-temperature stage compressor 8 to complete a refrigerating cycle.
Water system:
the chilled water in the chilled water tank 18 is pumped out by the chilled water pump 3, enters the low-temperature stage evaporator 14, exchanges heat with the refrigerant, absorbs heat by the cold-side refrigerant, reduces the temperature of the chilled water at the hot side, then goes out, enters peripheral chilled equipment, and returns to the chilled water tank 18 after a circle of circulation.
The cascade vapor compression refrigeration system is added, so that the temperature difference between the secondary refrigerant and the cooled equipment (high-pressure hydrogen) is improved, and the cooling effect is improved.
The present application provides a low-temperature skid-mounted refrigeration unit of a hydrogenation machine, and a specific example is applied in the present application to explain the principle and the implementation manner of the present application, and the description of the above example is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. The utility model provides a hydrogenation machine low temperature sled dress refrigerating unit which characterized in that: the system comprises a high-temperature-level refrigeration system, a low-temperature-level refrigeration system and a water cooling system;
the high-temperature-stage refrigeration system comprises a high-temperature-stage compressor (9), wherein an exhaust port of the high-temperature-stage compressor (9) is connected with a high-temperature-stage oil separator (5), a refrigerant outlet of the high-temperature-stage oil separator (5) is connected with an evaporative condenser (1), an oil outlet of the high-temperature-stage oil separator (5) is connected with an oil cavity of the high-temperature-stage compressor (9), an outlet of the evaporative condenser (1) is connected with a high-temperature-stage expansion valve (13), the high-temperature-stage expansion valve (13) is connected with a high-temperature-stage evaporator (15), and an outlet of the high-temperature-stage evaporator (15) is connected with the high-temperature-stage compressor (9) to complete a refrigeration cycle;
the low-temperature-stage refrigeration system comprises a low-temperature-stage compressor (8), wherein an exhaust port of the low-temperature-stage compressor (8) is connected with a low-temperature-stage oil separator (4), a refrigerant outlet of the low-temperature-stage oil separator (4) is connected with a high-temperature-stage evaporator (15), the high-temperature-stage evaporator (15) is connected to a heat regenerator (6), the heat regenerator (6) is connected with a refrigerant side inlet of the low-temperature-stage evaporator (14), a refrigerant side outlet of the low-temperature-stage evaporator (14) is connected with the heat regenerator (6), and an outlet of the heat regenerator (6) is connected with an air suction port of the low-temperature-stage compressor (8);
the water cooling system comprises a freezing water tank (18) and a low-temperature-level evaporator (14), wherein the freezing water tank (18) is connected with a freezing water inlet of the low-temperature-level evaporator (14), a freezing water outlet (20) of the low-temperature-level evaporator (14) is connected with peripheral cooled equipment, and the peripheral cooled equipment is connected with the freezing water tank (18) through a freezing water inlet (19) to complete refrigeration cycle.
2. The low-temperature skid-mounted refrigerating unit of the hydrogenation machine as claimed in claim 1, wherein: the outlet of the evaporative condenser (1) is connected with a high-temperature-level liquid receiver (7), the outlet end of the high-temperature-level liquid receiver (7) is connected with a high-temperature-level drying filter (11), the high-temperature-level drying filter (11) is connected with a high-temperature-level expansion valve (13), and the high-temperature-level expansion valve (13) is connected with a high-temperature-level evaporator (15).
3. The hydro-engine low temperature skid-mounted refrigeration unit of claim 1, wherein: and an oil outlet of the low-temperature-stage oil separator (4) is connected with an oil cavity of the low-temperature-stage compressor (8).
4. The low-temperature skid-mounted refrigerating unit of the hydrogenation machine as claimed in claim 1, wherein: and a refrigerant outlet of the low-temperature-stage oil separator (4) is connected with an expansion tank (12).
5. The low-temperature skid-mounted refrigerating unit of the hydrogenation machine as claimed in claim 1, wherein: the high-temperature-stage evaporator (15) is connected with the low-temperature-stage liquid receiver (16), the low-temperature-stage liquid receiver (16) is connected with the low-temperature-stage drying filter (10), and the low-temperature-stage drying filter (10) is connected with the heat regenerator (6).
6. The low-temperature skid-mounted refrigerating unit of the hydrogenation machine as claimed in claim 1, wherein: and the heat regenerator (6) is connected with a refrigerant side inlet of the low-temperature-stage evaporator (14) through a low-temperature-stage expansion valve (17).
7. The hydro-engine low temperature skid-mounted refrigeration unit of claim 1, wherein: the chilled water outlet of the low-temperature-stage evaporator (14) is connected with the chilled water tank (18) through a return bypass valve (2).
8. The low-temperature skid-mounted refrigerating unit of the hydrogenation machine as claimed in claim 1, wherein: the freezing water tank (18) is connected with a freezing water inlet of the low-temperature-level evaporator (14) through a freezing water pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210392607.3A CN115031421A (en) | 2022-04-14 | 2022-04-14 | Low-temperature skid-mounted refrigerating unit of hydrogenation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210392607.3A CN115031421A (en) | 2022-04-14 | 2022-04-14 | Low-temperature skid-mounted refrigerating unit of hydrogenation machine |
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| Publication Number | Publication Date |
|---|---|
| CN115031421A true CN115031421A (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210392607.3A Pending CN115031421A (en) | 2022-04-14 | 2022-04-14 | Low-temperature skid-mounted refrigerating unit of hydrogenation machine |
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| CN (1) | CN115031421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115654800A (en) * | 2022-11-29 | 2023-01-31 | 长春吉电氢能有限公司 | Hydroextractor circulative cooling system |
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| CN105004088A (en) * | 2015-07-31 | 2015-10-28 | 广东申菱空调设备有限公司 | Cascaded water chilling unit for dual purposes of intermediate temperature and low temperature |
| US20160334143A1 (en) * | 2015-05-12 | 2016-11-17 | Shanghai Ocean University | Switchable two-stage and cascade marine energy-saving ultralow-temperature refrigeration system |
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2022
- 2022-04-14 CN CN202210392607.3A patent/CN115031421A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202869066U (en) * | 2012-10-25 | 2013-04-10 | 南京五洲制冷集团有限公司 | Efficient dual-element-overlapped copious cooling unit with pre-cooling and temperature adjustment functions |
| CN103277863A (en) * | 2013-06-24 | 2013-09-04 | 机械工业第三设计研究院 | Air conditioner cold water variable-flow system and control method thereof |
| US20160334143A1 (en) * | 2015-05-12 | 2016-11-17 | Shanghai Ocean University | Switchable two-stage and cascade marine energy-saving ultralow-temperature refrigeration system |
| CN105004089A (en) * | 2015-07-31 | 2015-10-28 | 广东申菱空调设备有限公司 | Cascaded unit used for both medium-high temperature cold storage house and low temperature cold storage house |
| CN105004088A (en) * | 2015-07-31 | 2015-10-28 | 广东申菱空调设备有限公司 | Cascaded water chilling unit for dual purposes of intermediate temperature and low temperature |
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| CN115654800A (en) * | 2022-11-29 | 2023-01-31 | 长春吉电氢能有限公司 | Hydroextractor circulative cooling system |
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