High pressure pump system and method of operation thereof

Details High pressure pump system and method of operation thereof High pressure pump system and method of operation thereof

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 9/02 (2006.01) G01N 3/12 (2006.01)

Patent

CA 2167197

A pump system for producing high and exactly controllable pres- sure levels includes a piston pump which has a piston (32) connecting to a spindle shaft (22), a spindle nut (44) on said spindle shaft, a cylin- der block (34) having a bore (36) for receiving said piston, a mecha- nism (14, 16, 26) for imparting rela- tive rotational and axial motions be- tween said piston and said cylinder block including a device for causing relative rotary motion of said spin- dle and spindle nut. A helical spring (46) or other resilient element is con- nected between said cylinder block (34) and said spindle nut (44) to compensate the reaction force gener- ated by a pressurized fluid sample in said cylinder bore (36) when put un- der compression. A flexible element (30) is connected between the pis- ton (32) and the spindle shaft (22) to compensate for any axial misalign- ment of the piston and the cylinder bore. Methods for operating such a system under adiabatic, isothermal, isobaric and isochoric conditions are described.

Système de pompe destiné à produire des niveaux de pression élevés et à régulation précise, qui comporte une pompe à piston comprenant un piston (32) relié à un arbre (22), un écrou (44) d'arbre situé sur ledit arbre, un bloc-cylindre (34) doté d'un alésage (36) destiné à recevoir ledit piston, et un mécanisme (14, 16, 26) destiné à imprimer des mouvements rotatifs et axiaux relatifs entre le piston et le bloc-cylindre et doté d'un dispositif servant à provoquer le mouvement rotatif relatif dudit axe et dudit écrou. Un ressort à boudin (46) ou autre élément faisant ressort relie le dit bloc-cylindre (34) audit écrou (44) pour compenser la force de réaction produite par un fluide sous pression situé dans l'alésage (26) de cylindre lorsqu'il est soumis à la compression. Un élément souple (30) relie le piston (32) à l'arbre (22) afin de compenser tout défaut d'alignement axial du piston et de l'alésage de cylindre. Des procédés de fonctionnement d'un tel système dans des conditions adiabatiques, isothermiques, isobariques et isovolumes sont également décrits.

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