Measuring and testing – With fluid pressure – Clamp – plug – or sealing feature
Patent
1993-01-28
1994-08-23
Williams, Hezron E.
Measuring and testing
With fluid pressure
Clamp, plug, or sealing feature
73 37, G01M 302
Patent
active
053396782
ABSTRACT:
An apparatus for testing seal members for use in an oxygen-rich environment. The test apparatus operates and is constructed to replicate the service environment as closely as possible. The test unit includes a hull with an interior test portion, with connections for gaseous or liquid oxygen and nitrogen and having a reciprocating actuator shaft extending into the hull interior. A valve seal member is carried on a retainer and bears against sealing surfaces on a nozzle to test valve sealing operations, while a dynamic O-ring bears against a liner element carried within the hull. Pressure sensors determine whether an effective seal is maintained, while a temperature sensor insures that the dynamic O-ring temperature does not exceed specifications. The retainer and the nozzle can be changed to permit testing a variety of valve seals.
REFERENCES:
patent: 3213674 (1965-10-01), Salcido et al.
patent: 3400572 (1968-09-01), Mizenko
patent: 3835878 (1974-09-01), Braidt et al.
patent: 3987663 (1976-10-01), Repella
patent: 4407171 (1983-10-01), Hasha et al.
patent: 4903529 (1990-02-01), Hodge
patent: 5000033 (1991-03-01), Turner et al.
"Standard Test Method for Determining Ignition Sensitivity of Materials to Mechanical Impact in Pressurized Oxygen Environments" ASTM Test Method G86 Sep. 1989 pp. 1-11.
Johnson Service Company
Levine E. L.
Root III Joseph E.
Williams Hezron E.
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