Patent · US Active

Two-stage valve arrangement for hydraulic control of a piston- cylinder arrangement of a high- or medium-voltage power switch

US10830256B2 · kind B2 · utility

0Cited by

4References

10Claims

0Family size

Assignee

ABB Power Grids Switzerland AG · CH

Inventors

Thomas Brenneis · Mainaschaff, DE
Matthias Schmidt · Munich, DE
Thomas Klose · Althengstett, DE
Niko Robens · Hofheim, DE

Key dates

Filing date	Nov 30, 2016
Grant date	Nov 10, 2020
Priority date	—
Expiry date	Jun 3, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/7052
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve arrangement for hydraulic control of a piston-cylinder of a power switch contains a main stage having a first main valve and a second main valve, and a pilot stage having at least one pilot valve. In order to permit the first main valve to remain securely in the opened state, even in the event of pressure oscillations, the main valve has a total of four control surfaces, of which a second and a third control surface operate in a closing manner and a fourth control surface operates in an opening manner. For this purpose, the second control surface is connected to the high-pressure line, the third control surface is connected to the low-pressure line, and the fourth control surface is connected to the output-side valve connection of the first main valve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.