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US 2018/0180505 A1Published application
Diaphragm seal assembly with evacuated double diaphragm and vacuum monitoring
AssigneeWIKA Alexander Wiegand SE & Co. KG
InventorsJoachim ZIPP, Udo ROSENBERGER, Torsten PAULING, Heiko KERN, Albrecht KALISCH, Udo HOERNING
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Abstract
A diaphragm seal assembly, which includes a measuring instrument, a pressure being transmitted from a process side to be monitored, via an arrangement of two diaphragms having an evacuated intermediate space disposed therebetween, to the measuring instrument, reliably separated from the process side, the fatigue strength of the diaphragm seal assembly under extreme application conditions being improved.
Claims18
A diaphragm seal assembly comprising:
- a base body that includes at least one first diaphragm and a second diaphragm, the first diaphragm facing a process medium to be monitored, the second diaphragm facing a fluid-filled pressure path;
- a first measuring instrument for monitoring a pressure of a process medium;
- a second measuring instrument;
- an intermediate space formed between the first diaphragm and the second diaphragm, the intermediate space being evacuated, the second measuring instrument monitoring a vacuum present in the intermediate space;
- and
- a circular ring channel arranged around an outer edge of the first diaphragm and within an outer edge of the second diaphragm.
3 more elements
Dependencies are inferred from the claim text.