Abstract:
The invention is an accumulator system in which multiple elastomeric accumulators are attached in series or parallel in order to generate total differential pressure in excess of that generated in a non-series system. Also disclosed is a “stacked” accumulator system. The system stores energy when the accumulators deform from their original shape in response to the flow of a pressurized fluid. The stored energy is available for use when the fluid is released from the accumulators and the accumulators return to their original shape.
Abstract:
A volume accumulator (15), including a guide housing (33), a separating element (34) and a spring element (35). The separating element (34) is slidably mounted on an inner lateral face of the guide housing (33) and the spring element (35) is seated against the separating element (34) on one side and on the guide housing (33) on the other side. According to the invention, at least one indentation (47) is provided on the guide housing (33), with the indentation protruding into the guide housing (33). In the direction of the spring element (35), the indentation (47) has an open end against which the spring element (35) is seated.
Abstract:
An open port is provided on an inner peripheral surface of the cylinder bore of the reservoir apparatus and the port is exposed to the exterior of the reservoir apparatus. A hollow portion is formed concentrically with the port on a reservoir body. An annular thin portion is formed between the inner peripheral surface of the cylinder bore and the hollow portion surrounding the port in a radial direction. The thin portion is outwardly deflected and deformed by being pushed outwardly in a radial direction centering on the port in a range narrower than the inner diameter of the hollow portion. Thus, the opening of the port is outwardly sunk from the inner peripheral surface of the cylinder bore thereby to form a curved surface at a root portion of the thin portion on the inner peripheral surface of the cylinder bore.
Abstract:
An apparatus (10) for the storage therewithin and expulsion therefrom of a fluid medium includes a tubular tank (15) and a pair of diametrically opposed, simultaneously actuatable pistons (50) permanently sealed to the tank by a pair of rupturable seals (65). The pistons are driven by a secondary fluid the effects of which are shielded from the interior surface of the tank by a pair of flexible shields fixed at the ends thereof to a corresponding piston and the inner surface of the tank, movement of the pistons effecting an expansion of the shields to form a protective lining for the tank.
Abstract:
Ein Verfahren zum Herstellen von Druckbehältern, einschließlich Druckspeichern, wie Hydrospeichern und deren Teile (24), ist dadurch gekennzeichnet, dass diese zumindest teilweise mittels eines 3D-Druckverfahrens hergestellt werden.
Abstract:
Eine Speichereinrichtung, insbesondere in Form eines Kolbenspeichers, mit einem Trennkolben (22), der innerhalb eines Speichergehäuses (2) zwei Medienräume (26, 28) voneinander trennt, insbesondere einen Raum (28) mit einem Arbeitsgas, wie Stickstoff, von einem Raum (26) mit einer Arbeitsflüssigkeit, wie Hydrauliköl, ist dadurch gekennzeichnet, dass der Trennkolben (22) innerhalb einer Führungseinrichtung (24) längsverfahrbar geführt ist und dass die Führungseinrichtung (24) innerhalb des Speichergehäuses (2) angeordnet sich zumindest teilweise entlang dessen Längsachse (10) erstreckt.
Abstract:
Provided is a hydraulic circuit capable of efficiently recovering one and the other hydraulic energies for utilization by separating and recovering the same, one hydraulic energy being extruded from a hydraulic cylinder and the other hydraulic energy being extruded in starting and stopping rotation of a hydraulic motor, so as to allow an energy density of an accumulator to increase. The hydraulic circuit has: a first accumulator (61) that accumulates pressure of hydraulic oil extruded from a boom cylinder (7cl); and a second accumulator,(125) that accumulates one pressure of the hydraulic oil relieved when the rotation of a swing motor (3m) is started and another pressure of the hydraulic oil extruded from a motor driving circuit (C) with inertial rotation of the swing motor (3m) when the rotation of the swing motor (3m) is stopped. A solenoid switch valve (127) is provided in passages (123, 129) that connect the first accumulator (61) and the second accumulator (125) so as to communicate therebetween. The solenoid switch valve (127) serves to close the passages (123, 129) when pressure is accumulated in the second accumulator (125) and to open when the pressure in the second accumulator (125) is discharged.