Valve arrangement

US8910660B2 · kind B2 · utility

Assignee

• ABB TECHNOLOGY AG · CH

Inventors

• Matthias Schmidt · Munich, DE
• Franz KORBER · Mallersdorf, DE

Key dates

• Filing date: May 18, 2012
• Grant date: Dec 16, 2014
• Expiry date: May 18, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/87209
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Exemplary embodiments are direct to a valve system for actuating the piston of a piston cylinder arrangement for a hydraulic or fluid device, and for actuating the piston cylinder arrangement for actuating the movable contact piece of a high-voltage circuit breaker. The system including a main control valve arrangement, having two 2/2-way valves used as main valves and which can be controlled by a pilot control valve arrangement. The main control valve arrangement directs a path for the high pressure fluid to the chamber above the piston and connects the chamber to a low-pressure tank for discharging the chamber above the piston. Two 2/2-way valves which form the pilot control valve arrangement are associated with the main control valve arrangement such that the 2/2-way valves direct or supply either a high-pressure control pressure or a low-pressure control pressure to the main control valve arrangement.