Cell for thermodynamic characterization of pressurized fluids e.g. oil, has motorization unit with motor for moving support according to transmission ratios, and play take-up spring adjusting transmission ratios by applying load to support

摘要

The cell (1) has a closed compression chamber (4) with a variable volume for receiving a sample of fluid e.g. oil. A main body (2) is arranged with a support (12) sliding along a main axis. The support is linked to a cylindrical annular piston (30) that goes down in the compression chamber so as to vary its volume. A motorization unit (8) is arranged with an electrical motor for moving the support according to transmission ratios. A mechanical play take-up spring (32) is arranged for adjusting the transmission ratios by applying axial load to the support.