Damping device

A damping device for fluids subject to pressure pulsations, the damping device comprising:

• a hydraulic accumulator having an accumulator housing containing a movable first separating element separating a gas chamber from a first fluid chamber inside the accumulator housing, the first separating element being pressurizable by fluid in the first fluid chamber, the first separating element being a rolling membrane;
• a damper housing being coupled to the accumulator housing and having a second fluid chamber, the second fluid chamber being a passage through which the fluid subject to pressure pulsations can flow and containing a movable second separating element separating the second fluid chamber from the first fluid chamber without dead space in the second fluid chamber by not contacting wall surfaces of the damper housing defining the second fluid chamber even in a maximum stretch position of the second separating element, the second separating element delimiting a trough of the damper housing and being a flat membrane;
• wall parts of the accumulator housing extending between the first and second separating elements and spanning the first fluid chamber, the first and second separating elements engaging the wall parts in fully displaced positions of the first and second separating elements;
• a permanent passage in the wall parts connecting adjacent first and second partial chambers of the first fluid chamber in fluid communication, the first partial chamber being delimited by the first separating element, the second partial chamber being delimited by the second separating element;
• and
• a chemically neutral separating liquid in the first fluid chamber so as to not to cause contamination of or adversely affect the fluid in the second fluid chamber to be dampened upon failure of the second separating element.