Electrohydraulic system for use under water, and process valve having an electrohydraulic system of said type

US10428841B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Reiner Knoell · Burgsinn, DE
• Alexandre Orth · Hettstadt, DE
• Alexander Koertgen · Bonn, DE
• Gerard Swagten · Boxtel, NL

Key dates

• Filing date: Jul 21, 2015
• Grant date: Oct 1, 2019
• Expiry date: Feb 12, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B21/006
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electrohydraulic system for use at great water depths includes a vessel, a hydrostatic machine, and an electric machine. The vessel has an interior space configured to form a volume that is closed off with respect to the surroundings and that accommodates a hydraulic pressure fluid. The vessel includes a compensation piston configured to subject the hydraulic pressure fluid in the interior space to at least approximately the pressure prevailing in the surroundings. The hydrostatic machine is configured to be operated as a pump. The electric machine is mechanically coupled to the hydrostatic machine and operates as an electric motor in order to operate the hydrostatic machine as a pump. The hydrostatic machine and the electric machine are arranged in the interior space of the vessel. The compact electrohydraulic system fits on existing installations and on new installations. The electrohydraulic system also includes a compact process valve.