Pressure relief system for filtration testing apparatus

Details Pressure relief system for filtration testing apparatus Pressure relief system for filtration testing apparatus

1996-05-03

1997-10-14

Brock, Michael

Measuring and testing

With fluid pressure

Porosity or permeability

137 6823, G01N 1508

Patent

active

056774788

ABSTRACT:
A replaceable primary rupture disk placed in the main body of a cylindrical test chamber functions as a safety device and ruptures to relieve pressure from the chamber when the pressure exceeds a selected maximum value. A free piston that is moveable within the cylindrical to separate the chamber into two variable volume compartments is equipped with a replaceable secondary rupture disk that limits the pressure differential across the piston. The secondary disk ruptures at a pressure differential lower than that required to rupture the primary disk. The maximum pressure that can be contained in any chamber is a pressure equal to the sum of the secondary and primary rupture pressures. The maximum pressure that can be contained in one compartment, if the other is at atmospheric pressure, is the burst pressure of the secondary disk. Threaded end caps are provided with seals that disengage before the threads disengage to bleed down any trapped pressure in the chamber while simultaneously holding the caps to the chamber. Radial spanner wrench openings extending through the cap end are used for tightening and removing the cap and as handling attachment points when the chamber is hot.

REFERENCES:
OFI Testing Equipment, Inc. Catalog, Cover plus pp. 47,50,51 and 55, published before May 3, 1995 Author: OFI Testing Equipment, Inc., 2916 West T.C. Jester, Suite 104, Houston, Tx 77018 Published in 1995.
Fann High Temperature--High Pressure Filter Press Instruction Manual, Rev. D.
Authorized and Published by Fann Instrument Company, P.O. Box 4350, Houston, Tx 77210, 1995.

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