Patent · US Active

Pressure accumulator having a monitoring device

US11268541B2 · kind B2 · utility

0Cited by

14References

20Claims

0Family size

Assignee

HYDAC TECHNOLOGY GMBH · DE

Inventors

Herbert Baltes · Losheim, DE
Peter Kloft · Ransbach-Baumbach, DE
Petra Jochum · Quierschied, DE
Daniel Jason Rau · Riegelsberg, DE

Key dates

Filing date	Mar 11, 2019
Grant date	Mar 8, 2022
Priority date	—
Expiry date	Mar 11, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01N31/222
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A pressure accumulator having an accumulator housing (10) in which a movable separating element (16) separates a gas chamber (12) filled with a working gas from a fluid chamber (14) in a fluid-sealed manner. 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 has an inspection window (54), through which an indicator can be observed. The monitoring device is connected to the gas chamber (12) and changes optical properties discernibly when wetted with the fluid. The indicator changing its optical properties is accommodated in a capsule (48) with a capsule wall (50) permeable to the passage of the fluid and arranged between the inspection window (54) and the separating element (16) in the accumulator housing (10).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.