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Efficient Modified Claude Liquefaction Cycle Helium Liquefier from China Suppliers and Factory - Ultra-Low Leakage Rates
Product Description
A Large cryogenic helium liquefaction plant adopts helium turbine reverse Bratton refrigeration cycle to obtain the corresponding refrigeration capacity. High-pressure helium is obtained through helium compressor first, part of high-pressure helium is expanded and cooled in turbine expander, and the remaining high-pressure gas is cooled step by step in multistage heat exchanger, and finally liquid helium is obtained by throttling through Jiao Tang throttle valve, and the obtained liquid helium is directly output as product. Such refrigeration equipment is called a helium liquefier.
4.5K Helium Refrigerator/Liquefier Process Diagram
4.5K Helium Refrigerator/Liquefier Process Diagram
Helium refrigerator/liquefier can usually work in two modes: refrigeration mode and liquefaction mode. If it works in refrigeration mode, the liquid helium obtained provides 4.5K constant temperature cooling for the user equipment, and the evaporated helium is returned to the cold box to recover the cold capacity and then recycled. If operating in liquefaction mode, the obtained liquid helium is directly exported as a product.
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
The basic composition of a 4.5K helium refrigerator/liquefier system consists of several parts:
1. The circulating air source system includes:
helium compressor, helium oil separator and helium storage tank.
2. 4.5K cold box:
The 4.5K cold box is a vacuum adiabatic cold box, which contains a multistage heat exchanger, a helium turbine expansion machine, an internal adsorption cylinder, a low-temperature valve, measuring elements and other components.
3. Liquid helium storage system:
It includes liquid helium dewar, coaxial transmission tube from cold box to liquid helium dewar, and infusion tube for transferring liquid helium.
4. Control system:
Including control system hardware, software, configuration and remote control.
5. Public facilities:
Including liquid nitrogen storage tank, instrument air system, cooling water system.
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 |
Frequently Asked Questions
What is the working principle of the helium liquefaction plant?
The plant utilizes a helium turbine reverse Bratton refrigeration cycle. High-pressure helium is generated by a compressor, cooled step-by-step in a multistage heat exchanger and a turbine expander, and finally throttled through a Jiao Tang throttle valve to produce liquid helium.
What are the two working modes of the helium refrigerator/liquefier?
It operates in either refrigeration mode or liquefaction mode. In refrigeration mode, it provides constant 4.5K cooling for user equipment and recycles the evaporated helium. In liquefaction mode, it directly outputs the liquid helium as a product.
What does the circulating air source system consist of?
The circulating air source system consists of three main parts: the helium compressor, the helium oil separator, and the helium storage tank.
What components are contained inside the 4.5K cold box?
The vacuum adiabatic 4.5K cold box contains a multistage heat exchanger, a helium turbine expansion machine, an internal adsorption cylinder, low-temperature valves, measuring elements, and other key process components.
What public facilities are required to support the system?
The system requires standard public facilities including a liquid nitrogen storage tank, an instrument air system, and a cooling water system.
How can I select the appropriate model from the FHLR or FHL series?
Selection is based on your required cooling capacity (ranging from 160W to 1800W for the FHLR series) or the required liquefaction rate (ranging from 40 L/H to 420 L/H for the FHL series), along with the rated power availability of your compressor.