Hot Products
01
China Suppliers Factory Modified Claude Helium Liquefaction Cycle with Ultra-Low Leakage and Smart Control
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 as shown in Figure 2:
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
How does the large cryogenic helium liquefaction plant operate?
The plant utilizes a helium turbine reverse Bratton refrigeration cycle. First, high-pressure helium is generated via a compressor. Part of this gas is expanded and cooled inside a turbine expander, while the remaining high-pressure gas is cooled step-by-step in a multistage heat exchanger. Finally, liquid helium is obtained through a Jiao Tang throttle valve.
What are the two working modes of the helium refrigerator/liquefier?
The system can operate in refrigeration mode or liquefaction mode. In refrigeration mode, the liquid helium provides 4.5K constant temperature cooling to user equipment, and evaporated helium is recycled back to the cold box. In liquefaction mode, the liquid helium is directly exported as a product.
What components make up the circulating air source system?
The circulating air source system consists of three main components: the helium compressor, the helium oil separator, and the helium storage tank.
What is contained inside the 4.5K vacuum adiabatic cold box?
The 4.5K cold box contains a multistage heat exchanger, a helium turbine expansion machine, an internal adsorption cylinder, a low-temperature valve, and various measuring elements.
What public facilities are required to support this helium system?
The operation of the system requires public facilities including a liquid nitrogen (LN2) storage tank, an instrument air system, and a cooling water system.