Original title: A new construction of rotor of helium expansion turbine
Authors: Dupák, Jan ; Hanzelka, Pavel ; Michalička, Petr ; Tuček, L. ; Ustohal, V.
Document type: Papers
Conference/Event: CRYOGENICS 2002, Praha (CZ), 2002-04-23 / 2002-04-26
Year: 2002
Language: eng
Abstract: The aim of our work was to develop a rotor of the expansion turbine designed for a helium liquefier that would enable operation in different modes and achieving of the desired effectiveness at same time. For meeting theserequirements the rotor should enable precise operation of the turbine in the range of 140 000 to 350 000 rqm at minimum heat flow to the low-temperature part of the turbine. Considering the low thermal conductivity and a high strength, the low-temperature part was made of VT3-1 titanium alloy. This contribution is focused mainly on problems of creation of mechanically strong and thermally resistant joint of this part of the rotor with the part working at room temperature.
Keywords: electron beam welding; helium expansion turbine; vacuum braring
Project no.: CEZ:AV0Z2065902 (CEP), IBS2065015 (CEP)
Funding provider: GA AV ČR
Host item entry: Proceedings of 7th Cryogenics IIR international conference, ISSN 0151-1637

Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0101088

Permalink: http://www.nusl.cz/ntk/nusl-29531


The record appears in these collections:
Research > Institutes ASCR > Institute of Scientific Instruments
Conference materials > Papers