Hydac Technology Corporation

Hydac Process Technology Gmbh

Martin Groben

Horst Mannebach

Frank Bauer

Markus Lehnert

Alexander Albert

Matthias Leo Jirgal

Elmar Betzler

A damping device for fluids subject to pressure pulsations has at least one hydraulic accumulator (). The accumulator housing () contains a movable separating element (), which separates a gas side () from a fluid room () and can be pressurized by a fluid present in the fluid room (). A damper housing () having a second fluid room () is provided as a component of the accumulator housing (). Through the second fluid room (), the fluid subject to pressure pulsations can flow. The second fluid room () contains a second movable separating element (), which separates the second fluid room () from the first fluid room () of the hydraulic accumulator () without dead space.

Damping device

A safety apparatus is for containers loaded by gas pressure, in particular the gas side () of hydropneumatic devices such as hydraulic accumulators (). The safety apparatus has a connection device () that can be attached to the pressure chamber of the container to form a passage () between the gas side () of the container and the outside. A structure () normally blocks the passage () and under the influence of temperature can be transferred into a state that allows a flow path through the passage () to be cleared.

Safety device against excess temperature

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.

Device for adjusting a media pressure relative to an ambient pressure

A safety device for closure elements () on pressure-medium-containing tanks, in particular on hydropneumatic devices such as hydraulic accumulators, has a screw connection provided as a closure device on a filling or checking port. The screw connection has a closure screw () threadedly engaged on the port () and blocking the port () when the screw connection is tightened and opens the port () when a flow path is released. A device () limits the free movement path of the closure element () when moved out of a closed position as a result of occurring overpressure.

Safety device for pressure-medium-containing tanks

A device for transferring a hydraulic working pressure in a pressure fluid for pressure actuating hydraulic units of deep sea systems, in particular deepwater wells, includes a first pressure chamber () for the pressure fluid, a displaceable piston arrangement () for changing the volume of the pressure chamber (), and at least one second pressure chamber () in a cylinder arrangement (). The surrounding pressure of the deep sea can be applied to the second pressure chamber for a displacement of the piston arrangement () generating the working pressure in the first pressure chamber (). A pressure accumulator () is associated with the cylinder arrangement (). The displaceable separating element () of the pressure accumulator separates a chamber () connected to the seawater from an actuating chamber () containing an actuating fluid and connected to the second pressure chamber () to apply the deep sea pressure to the second pressure chamber by the actuating fluid.

Device for transferring a hydraulic working pressure in a pressure fluid for actuating hydraulic units of deep-sea systems

A media separating device (), in particular a hydraulic accumulator (), has a movable separator () separating two media () received in media chambers () and differing from each other. A measuring apparatus () can detect an overflow of at least one medium () from a medium chamber () via the separator () into the other medium chamber () having the other medium ().

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Sulzbach, Germany

Martin Groben