Abstract: A separating device for fluid media receivable in a working housing (1). A separating piston (3) is inside the working housing (1) and separates two media compartments (5, 7) from one another in a media-tight manner. The separating piston (3) is provided along its external circumference with a guide (19). During a transversing movement of the separating piston (3) inside the working housing (1), the guide bears slidably on the housing inner wall (21) and is an integral component of the separating piston (3).

Abstract: A pressure accumulator has at least one accumulator housing (103) with at least one connection (111; 113) for a pressure medium (149), especially in the form of a fluid that can be accumulated in the accumulator housing (103). A filling material (119) that has hollow chambers or that forms at least one hollow chamber for accommodating at least part of the pressure medium (149) introduced into at least sections of the accumulator housing (103). An interior (117) of the accumulator housing (103) is completely filled with the filling material (119) to such an extent that the filling material (119) contacts the entire surface of a wall (120) of the accumulator housing (103).

Abstract: A damping device, in particular for damping or avoiding pressure surges, such as pulses, in hydraulic supply circuits, preferably in the form of a silencer, having a damping housing (1) which surrounds a damping chamber and has at least one fluid inlet (35) and at least one fluid outlet (41) and a fluid receiving chamber which extends between the fluid inlet (35) and the fluid outlet (41), wherein, during operation of the device, a fluid flow crosses the damping chamber in a throughflow direction (11), coming from the fluid inlet (35) in the direction of the fluid outlet (41), and wherein at least parts of the fluid receiving chamber extend in at least one extent direction transversely with respect to the throughflow direction (11), is characterized in that more than one fluid receiving chamber is arranged one after the other in the throughflow direction (11) and in that the fluid receiving chamber which is first upstream and the fluid receiving chamber which is last downstream immediately adjoin the fluid in

Abstract: A hydraulic energy recovery system (101) has an output drive unit (103), which can be actuated by a driver (102), and by which a hydraulic motor-pump unit (104) can be driven. In at least one energy feed position, the motor-pump unit supplies an energy storage device (106) and/or working hydraulics (107) with fluid. In a recuperation position, the motor-pump unit discharges fluid under pressure from the energy storage device (106) at least to the working hydraulics (107) and/or is used to actuate the output drive unit (103).

Abstract: A device recovers energy in working machines with at least one power drive actuated to move a load mass back and forth and with an energy storage system (16) absorbing the energy released in the movement of the load mass in one direction and making it available for a subsequent movement in the other direction. The energy storage system includes an accumulator cylinder (16) mechanically coupled to the load mass and storing pneumatic pressure energy for movement in one direction. For movement in the other direction, the accumulator cylinder acts as an auxiliary working cylinder supporting the power drive and converting the stored pressure energy into driving force.

Abstract: The invention relates to a hydropneumatic pressure accumulator, in particular a pulsation damper, comprising an accumulator housing (2) and a movable separating element (20), which separates a pressurized working gas-containing gas working space (24) from a fluid chamber (22) in the accumulator housing (2). The hydropneumatic pressure accumulator is characterized in that a gas storage chamber (12) is provided, which contains an additional volume of the pressurized working gas, said gas storage chamber (24) being connected via a connecting path (30) having a throttle point.

Abstract: A device (1) adjusts a media pressure relative to an ambient pressure defined by a depth-dependent sea water pressure during use of the device (1). The sea water pressure acts on a compensator device (35) that permits a reversible change in length or elongation. At least two compensator elements (41) of the compensator device (35) are provided in series in the direction of the change in length or elongation.

Abstract: A pressure accumulator includes an accumulator housing (2) in which a movable separating element (30) fluid-tightly separates a gas chamber (16) filled with a working gas from a fluid chamber (28). A monitoring device (50, 54) supplies an optical signal in the event of a malfunction affecting the sealing effect of the separating element (30).

Abstract: A hydraulic accumulator includes an accumulator housing (1), in which a bellows (21) having a selectable number of pleats (23) forms a mobile separation element between the gas side (25) and the fluid side (13). A distancing device (33) is arranged inside the accumulator housing (1), and is fluidically connected to the inside of the bellows (21) or abuts the bellows (21), forming an additional medium chamber.

Abstract: A safety device for closure elements (1) 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 (1) threadedly engaged on the port (3) and blocking the port (3) when the screw connection is tightened and opens the port (3) when a flow path is released. A device (25) limits the free movement path of the closure element (1) when moved out of a closed position as a result of occurring overpressure.

Abstract: The invention relates to an accumulator device, in particular in the form of a piston accumulator, having a dividing piston (22) which inside an accumulator housing (2) separates two media chambers (26, 28) from each other, and in particular separates a chamber (28) containing a working gas, such as nitrogen, from a chamber (26) containing a working fluid, such as hydraulic oil. The invention is characterized in that the dividing piston (22) is longitudinally movably guided in a guide device (24) and that the guide device (24) is arranged inside the accumulator housing (2) and extends at least partially along the longitudinal axis (10) thereof.

Abstract: A sensor device (1) detects flowable media (3, 3?), in particular fluids (9) received in pressure devices (5), such as pressure containers (7) or pressure lines. A sensor element (11) has an oscillation device (13) that is excited to produce oscillations under the action of a field (15) of a field generation device (17). The oscillating behavior of the oscillations changes upon inflow of the respective medium (3). The changes can be detected by a measuring device (19).

Abstract: 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 (19) for the pressure fluid, a displaceable piston arrangement (9, 11, 13) for changing the volume of the pressure chamber (19), and at least one second pressure chamber (21) in a cylinder arrangement (1). The surrounding pressure of the deep sea can be applied to the second pressure chamber for a displacement of the piston arrangement (9, 11, 13) generating the working pressure in the first pressure chamber (19). A pressure accumulator (37) is associated with the cylinder arrangement (1). The displaceable separating element (41) of the pressure accumulator separates a chamber (45) connected to the seawater from an actuating chamber (43) containing an actuating fluid and connected to the second pressure chamber (21) to apply the deep sea pressure to the second pressure chamber by the actuating fluid.

Abstract: A pressure vessel for receiving at least one fluid medium has a first shell (1) and a second shell (3) at least partially encompassing the first shell (1). The first shell (1) has, at least at one of its ends, a collar portion (5) having a securing element (15) that forms an opening (13) for supplying and discharging the medium. A support element (19) in the form of a split ring surrounds the opening (13), is provided inside the container and has a contact surface (39) adapted to the curved shape of the first shell (1) inner side attached to the collar portion (5). The contact surface is able to be pressed onto the first shell inner side attached to the collar portion (5). The contact surface is able to be pressed onto the first shell (1) using a pressing device (43, 45).

Abstract: A pressure accumulator has at least one accumulator housing (403) with at least one connection (411) for a pressure medium (421), especially in the form of a fluid that can be accumulated in the accumulator housing (403). The filling material (419) has hollow chambers or forms at least one hollow chamber for accommodating at least part of pressure medium (421) and/or at least one further pressure medium (449) introduced into at least sections of the accumulator housing (403).

Abstract: A hydropneumatic piston/cylinder arrangement, in particular for use as a spring element and/or shock absorber element, includes a cylinder (1) and a piston (15) axially movable in the cylinder chamber (5) of the cylinder. The cylinder chamber is filled with hydraulic fluid. The piston (15) is connected to a piston rod (13) extending outwardly in a sealed manner from one end of the cylinder (1). The base of the piston remote from the piston rod (13) can be operatively connected to a pneumatic spring mechanism (7) to convey fluid. A piston accumulator (7) has an accumulator piston (19) directly adjoining the hydraulic fluid in the cylinder chamber provided as the spring mechanism.

Abstract: A media separating device (1), in particular a hydraulic accumulator (3), has a movable separator (5) separating two media (7, 9) received in media chambers (11, 13) and differing from each other. A measuring apparatus (15, 115) can detect an overflow of at least one medium (7, 9) from a medium chamber (11, 13) via the separator (5) into the other medium chamber (11, 13) having the other medium (9, 7).

Abstract: A hydrostatic hybrid drive system for road vehicles includes a pump/motor unit (1) connected to the powertrain of the vehicle, controlled by a control unit (5) in a pump or motor operation, and connected to a high-pressure hydraulic accumulator via a first working line (7). The first working line can be closed by a control valve (45) and connected to a low-pressure hydraulic accumulator via a second working line (9). The high-pressure hydraulic accumulator and low-pressure hydraulic accumulator are formed by a double-piston accumulator (11), in which a high-pressure side and a low-pressure side having respective accumulator pistons (15, 17) are formed in an accumulator housing (13). The fluid chambers (23, 25) of the high-pressure side and the low-pressure side are separated by a central housing part (21) through which the common piston rod for both accumulator pistons (15, 17) extends.

Abstract: A pressure store includes a housing (2) having a first sub-chamber (8) arranged between the housing (2) and a flexible separating diaphragm (40), a second sub-chamber (54) arranged between the separating diaphragm (40) and a supporting body (48), and a third sub-chamber (28) encompassed by the supporting body (48). The first sub-chamber (8) can be filled with a first fluid. The second sub-chamber (54) and the third sub-chamber (28) are connected to one another in fluid-conducting fashion and can be filled with a second fluid. The first and the second sub-chambers (8, 54) vary in respective sizes as a result of movements of the separating diaphragm (40) as a function of the respective filling state. The first fluid is a storage medium and the second fluid is working medium. The second sub-chamber (54) is increased in size during the extraction of storage medium from the pressure store and is reduced in size during the filling of the pressure store with storage medium.

Abstract: A pressure vessel, provided preferably for use in bladder accumulators (27), has a multipart vessel body (1) composed of a tubular central part (3) that at at least one of its two ends, has a termination region (5, 7). A cover part (9) at least partially forms the termination region (5, 7) and engages at the edge over the central part (3), at least in the region of its end (13, 15), so as to form a fixed connection.