FIFTH PROJECT: A cryotrap for the purification of liquid helium designed with DSM 5

My fifth project is an essential part of the liquid helium purification line. 

On its way to the liquefier, where it will be turned into -269 deg Celcius (4 Kelvin) liquid, helium gas has to be purified from contaminants such as humidity, CO2, CO, hydrogen, oxygen, etc. Part of this purification process is done in a specially designed cryotrap, filled with both liquid nitrogen (-197 deg celsius) and molecular sieve (zeolites).
The trap is part of the Helium Liquifier, located at the Quantum Materials & Design Lab, at FORTH-IESL, Heraklion, Crete, Greece (Dr. Alexandros Lappas).

This is a dewar vessel, separated into three sections, a vacuum, liquid nitrogen, and a zeolite. The outer section contains the vacuum and insulates the cold heart of the trap from the ambient environment. On the cold walls of the mid-section, the contaminant molecules are frozen but not the helium ones (they do at a lower temp). The heart of the trap is a cylinder filled with porous material that serves as an extra filter for remaining contaminants.

All parts designed with DesignSpark Mechanical 5. Tools practiced: sliced image, transparency, image projection on the surface, various types of cuttings, blend tool, floating 2D text.

ScieRtist