An annular tube (or other shape) of elastomeric cellular material comprising elastomeric closed cells having gas infused therein is supported by structures protruding from the bottom surface of a suction stabilizer's head and/or by structures within the interior volume of the annular body of the suction stabilizer, preferably with spacing between the outer diameter of the annular tube of the cellular material and the inner walls of the suction stabilizer body. The gas-infused closed cell material may thus be employed in new suction stabilizer or pulsation dampener or to retrofit existing suction stabilizers or pulsation dampeners designed for a gas-filled bladder.

A plunger pressure accumulator includes a shell; and a plunger which is adapted to move relative to the shell into an interior space of the shell. The interior space is divided into at least two subspaces, a first subspace of which is suppliable with hydraulic fluid of an external system and a second subspace which is provided with a pressurized gas. Between the plunger and the shell is arranged a slide element upon which the plunger is supported to move to a distance apart from an internal surface of the first subspace and from an internal surface of the second subspace. The plunger pressure accumulator is provided with at least one regenerator which is stationary relative to the shell or the plunger.

An equalization device is, in particular, in the form of a tank. The housing (2) of the tank has at least one inlet (8) and one outlet (10) for receiving and discharging fluid, respectively, at least in one of the housing walls (4) of the housing, which housing can be filled with the fluid. At least one equalization body (14) is arranged within the housing (2). The equalization body is at least partly provided with an elastically compliant separating wall (20). The interior of the equalization body is delimited, and is at least partly in pressure-equalizing connection (32) with the surroundings at a passage (12, 32) through one of the housing walls (4).

A method for producing a foam body for a pressure or hydraulic accumulator has a bubble- or diaphragm-shaped, elastically flexible separating layer (12) separating gas and liquid chambers from each other within an accumulator housing. The production method includes introducing a flowable, preferably liquid, foam material into the pressure accumulator with the foam material being at least partially surrounded by the separating layer (12), curing the foam material in the hydraulic accumulator, and building up a pressure gradient in which the visibly curing foam material expands the separating layer (12) from an originally partially filled starting state in the direction of an end state in which the accumulator is finally filled with the cured foam (38).

The invention relates to an equalization device, in particular in the form of a tank, the housing (2) of which has at least one inlet (8) and one outlet (10) for receiving and discharging fluid, respectively, at least in one of the housing walls (4) of said housing, which housing can be filled with the fluid, characterized in that at least one equalization body (14) is arranged within the housing (2), which equalization body is at least partly provided with an elastically compliant separating wall (20), the interior of the equalization body thus being delimited, and that the interior is at least partly in pressure-equalizing connection (32) with the surroundings at a passage (12, 32) through one of the housing walls (4).

An annular tube (or other shape) of elastomeric cellular material comprising elastomeric closed cells having gas infused therein is supported by structures protruding from the bottom surface of a suction stabilizer's head and/or by structures within the interior volume of the annular body of the suction stabilizer, preferably with spacing between the outer diameter of the annular tube of the cellular material and the inner walls of the suction stabilizer body. The gas-infused closed cell material may thus be employed in new suction stabilizer or pulsation dampener or to retrofit existing suction stabilizers or pulsation dampeners designed for a gas-filled bladder.

A plunger pressure accumulator includes a shell; and a plunger which is adapted to move relative to the shell into an interior space of the shell. The interior space is divided into at least two subspaces, a first subspace of which is suppliable with hydraulic fluid of an external system and a second subspace which is provided with a pressurized gas. Between the plunger and the shell is arranged a slide element upon which the plunger is supported to move to a distance apart from an internal surface of the first subspace and from an internal surface of the second subspace. The plunger pressure accumulator is provided with at least one regenerator which is stationary relative to the shell or the plunger.

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).

A method for producing a foam body, in particular for a pressure accumulator, such as a hydraulic accumulator, the bubble- or diaphragm-shaped, elastically flexible separating layer (12) of which separates two media chambers from each other within the accumulator housing, in particular a gas working chamber from a liquid chamber (18), with at least the following production method steps: introducing a flowable, preferably liquid, foam material into the pressure accumulator, said foam material being at least partially surrounded by the separating layer (12), curing the foam material in the pressure accumulator, and in the processbuilding up a pressure gradient, in which the visibly curing foam material expands the separating layer (12) from an originally partially filled starting state in the direction of an end state, in which the accumulator is finally filled with the cured foam (38).