Speaker
Jihao Wu
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Description
The centrifugal cold compressors are the pressurizing device commonly used in large-capacity superfluid helium systems to connect the 2 K helium tank to the room-temperature screw compressors. In order to provide a large pressure ratio, the cold compressors are connected in the form of multi-stage series, which would result in the stable operating region that is reduced to a certain extent. Therefore, this paper models the multi-stage cold compressors and piping system, also decouples and analyses the system using different actuators to study the characteristics of the system under steady and dynamic load conditions, and uses bypass valves to regulate the compressor under surge conditions.
| Submitters Country | China |
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Authors
Baohua Chao
(State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry;University of Chinese Academy of Sciences)
Cui Lv
Huaiyu Chen
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Jin Zhen Wang
(Technical Institute of Physics and Chemistry, CAS)
Lei Yi
(Technical Institute of Physics and Chemistry, CAS)
Sihao Liu
(Technical Institute of Physics and Chemistry CAS)
