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1. (WO2016051253) A PRESSURE COMPENSATOR FOR OLEODYNAMIC APPLICATIONS

Pub. No.:    WO/2016/051253    International Application No.:    PCT/IB2015/001722
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Wed Sep 30 01:59:59 CEST 2015
IPC: F15B 5/00
F15B 17/00
F15B 11/10
G01L 19/00
Applicants: WELL EQUIPMENTS INTERNATIONAL S.R.L.
Inventors: PEVERI, Luigi
Title: A PRESSURE COMPENSATOR FOR OLEODYNAMIC APPLICATIONS
Abstract:
A pressure compensator, particularly for oleodynamic applications, comprising two cylinders: a compensator cylinder (2) in which is slidingly engaged a first piston (21) comprising a first piston rod, and a reducing cylinder (3), in which is slidingly engaged a second piston (31) comprising a second piston rod axially connected to the first piston rod; said compensator cylinder being coupled to a main oleodynamic cylinder; said compensator cylinder having a size so designed as to provide the same area ratio as that of the main cylinder, thereby to a set position of said main cylinder piston corresponding a precise position of the first piston of the compensator cylinder; said reducing cylinder comprising at least a low-pressure chamber (32) coupled to a pressure gauge; a displacement of the reducing cylinder piston rod either increases or decreases a pressure in said low-pressure chamber, proportionately to a working pressure in the main cylinder.