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Fullcryo 4.5K Helium Liquefaction Unit from China - Leading Suppliers & Factory for Advanced Cryogenic Systems
Product Description
Helium Liquefaction Unit is a highly efficient and reliable system for producing liquid helium. With its advanced technology, automated control systems, and robust safety features, it is an essential tool for scientific research, medical technology, and various industrial applications. By optimizing energy consumption and maximizing yield, these systems provide cost-effective solutions for meeting the growing demand for liquid helium.
4.5K Helium Refrigerator/Liquefier Process Diagram
① Helium compressor
② 4.5K cold box
③ Liquid helium dewar
④ Oil removal system
⑤ Control cabinet
⑥ Coaxial transfer line
⑦ LN2 tank
⑧ Helium buffer tank
1
Compression
Helium Compressors: The helium gas is compressed to a high pressure using helium compressors. This initial compression is crucial for the subsequent cooling and expansion processes.
2
Pre-Cooling
Heat Exchangers: The compressed helium is pre-cooled using heat exchangers, which transfer heat from the helium to a cooler medium (often another cryogenic fluid like liquid nitrogen).
3
Expansion and Cooling
Turbo expanders: The pre-cooled helium is then expanded through turbo expanders, which lower its temperature significantly. Turbo expanders are more efficient than Joule-Thomson valves because they do work on the expanding gas, thus reducing its temperature more effectively.
Expansion through Joule-Thomson Valves: After turbo expansion, the helium undergoes further cooling through Joule-Thomson (JT) expansion valves to reach the final liquefaction temperature.
Expansion through Joule-Thomson Valves: After turbo expansion, the helium undergoes further cooling through Joule-Thomson (JT) expansion valves to reach the final liquefaction temperature.
4
Heat Exchangers
Heat Exchangers: These are used to maximize the heat transfer efficiency between the high-pressure, warm incoming gas and the low-pressure, cold outgoing gas. This step is critical for improving the overall efficiency of the liquefaction process.
5
Liquefaction
Cold Box: The series of expansions and heat exchanges result in the helium gas reaching its liquefaction point at around 4.5 K. The liquefied helium is then collected in a storage dewar.
Product Parameters
| HELIUM REFRIGERATOR SERIES | FHLR-40 | FHLR-70 | FHLR-100 | FHLR-140 | FHLR-180 | FHLR-240 | FHLR-280 | FHLR-400 |
|---|---|---|---|---|---|---|---|---|
| COOLING CAPACITY W | 160 ~ 250 | 250 ~ 320 | 320 ~ 450 | 450 ~ 580 | 580 ~ 750 | 750 ~ 900 | 900 ~ 1000 | 1000 ~ 1800 |
| COMPRESSOR RATED POWER KW | 75 ~ 90 | 90 ~ 132 | 132 ~ 160 | 160 ~ 200 | 200 ~ 250 | 250 ~ 315 | 315 ~ 355 | 355 ~ 425 |
| HELIUM LIQUEFIER SERIES | FHL-40 | FHL-70 | FHL-100 | FHL-140 | FHL-180 | FHL-240 | FHL-280 | FHL-400 |
|---|---|---|---|---|---|---|---|---|
| LIQUEFACTION RATE L/H | 40 ~ 70 | 70 ~ 100 | 100 ~ 140 | 140 ~ 180 | 180 ~ 240 | 240 ~ 280 | 280 ~ 310 | 310 ~ 420 |
| COMPRESSOR RATED POWER KW | 75 ~ 90 | 90 ~ 132 | 132 ~ 160 | 160 ~ 200 | 200 ~ 250 | 250 ~ 315 | 315 ~ 355 | 355 ~ 425 |
4.5K Helium Refrigerator/Liquefier Process Diagram
Frequently Asked Questions
What is a Helium Liquefaction Unit and where is it used?
A Helium Liquefaction Unit is a highly efficient and reliable system designed to produce liquid helium. It is essential for scientific research, medical technology (such as cooling MRI machines), and various advanced industrial applications.
What are the primary stages in the helium liquefaction process?
The process consists of five main stages: 1. Compression via helium compressors, 2. Pre-cooling using heat exchangers, 3. Expansion and cooling via turbo expanders and Joule-Thomson valves, 4. Heat exchange optimization, and 5. Liquefaction inside a cold box at approximately 4.5 K.
Why does the system use turbo expanders instead of only Joule-Thomson valves?
Turbo expanders are significantly more efficient because they do physical work on the expanding gas. This active work reduces the temperature of the helium gas much more effectively than passive expansion through Joule-Thomson valves alone.
What cooling capacities does the FHLR Helium Refrigerator Series offer?
The FHLR series offers cooling capacities ranging from 160 ~ 250 W (for the FHLR-40 model) up to 1000 ~ 1800 W (for the high-end FHLR-400 model).
What is the liquefaction rate range of the FHL Helium Liquefier Series?
The FHL series features liquefaction rates starting from 40 ~ 70 L/H (FHL-40) and reaching up to 310 ~ 420 L/H (FHL-400), with corresponding compressor rated power requirements from 75 kW up to 425 kW.