Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1989-12-12
1991-06-11
Orsino, Joseph A.
Measuring and testing
Fluid pressure gauge
Diaphragm
73715, 73756, G01L 702
Patent
active
050222716
ABSTRACT:
A pressure sensing device is provided for sensing pipeline pressure particularly for pipes transporting corrosive or abrasive fluids and slurries where it is essential to isolate the instrumentation from the fluid in the pipeline. A body member is provided with a central bore with a recessed midportion in the body member extending 360.degree. around the central bore. A replaceable sleeve member is screw-fit within the body member and has a recessed midportion to mate with the recessed midportion in the body member to form a chamber. A thin metal wall in the midportion of the sleeve member forms an end wall of the chamber within the body member. A plurality of outwardly extending pleats or folds are die-formed in the thin metal wall so as to permit the metal sleeve to readily move inwardly and outwardly in response to variations in pressures of fluid passing through the sleeve. A pressure sensing instrument is mounted on the body member and the chamber within the body member and sleeve is filled with fluid. When the device is coupled within a pipeline and fluids are passed therethrough the thin metal wall of the sleeve member senses pressure variations around the entire outer surfaces of the fluid stream.
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Orsino Joseph A.
Swarthout Brent A.
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