公开(公告)号：US20210115948A1

公开(公告)日：2021-04-22

申请号：US16981784

申请日：2019-03-11

Applicant: HYDAC TECHNOLOGY GMBH

Inventor： Herbert BALTES ,  Peter KLOFT ,  Petra JOCHUM ,  Daniel RAU

IPC: F15B1/10

Abstract: A pressure accumulator having an accumulator housing (10) in which a movable separating element (16) separates a gas room (12) filled with a working gas from a fluid room (14) in a fluid-sealed manner, wherein a monitoring device (46) is provided, which, in the event of a fault impairing the sealing effect of the separating element (16), provides an optically discernible indication and which has an inspection window (54), through which an indicator can be observed, which is connected to the gas room (12) and whose optical properties change discernibly when wetted with the fluid, is characterized in that the indicator changing its optical properties is accommodated in a capsule (48), the capsule wall (50) of which is permeable to the passage of the fluid and which is arranged between the inspection window (54) and the separating element (16) in the accumulator housing (10).