Hydac Technology Corporation

Alexander Albert

Dennis Christopher Lang

Herbert Baltes

Peter Kloft

Frank Bauer

Martin Groben

A piston accumulator has an accumulator housing and a separating piston () guided for longitudinal motion in the accumulator housing. The separating piston separates a liquid side () from a gas side () in the accumulator housing. Liquid unintentionally transitions from the liquid side () to the gas side () despite a piston seal on the separating piston (). By a return device (), the transitioned liquid is at least partially returned from the gas side () of the accumulator housing to the liquid side () of the accumulator housing.

Piston accumulator

A hydropneumatic piston accumulator has an accumulator housing () defining a housing longitudinal axis () and a piston () longitudinally movable between two housing covers () positioned opposite each other. In the housing (), the piston () separates a working chamber () for a compressible medium, such as a working gas, from a working chamber () for an incompressible medium, such as hydraulic fluid. A piston part () of a displacement measurement device continuously determines each position of the piston () in the housing (). A rod-shaped guide () is stationarily positioned in the accumulator housing () and passes all the way through the piston () in each of its displacement positions in the accumulator housing (). The piston () is movably guided along the guide until it reaches the stop on one of the two housing covers () and is sealed against this guide () using a sealing device ().

Hydropneumatic piston accumulator

A device () adjusts a media pressure relative to an ambient pressure defined by a depth-dependent sea water pressure during use of the device (). The sea water pressure acts on a compensator device () that permits a reversible change in length or elongation. At least two compensator elements () of the compensator device () are provided in series in the direction of the change in length or elongation.

Growing community of inventors

Wallerfangen, Germany

Alexander Albert