Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1987-06-22
1989-05-16
Laroche, Eugene R.
Measuring and testing
Sampler, sample handling, etc.
Capture device
73155, 7386386, 7386462, G01N 112
Patent
active
048298352
ABSTRACT:
For use in an oil sampler having a vanishing chamber, the vanishing chamber relatively opposite a reciprocating anvil, and wherein sampled oil is subject to including abrasive particles such as sand therein, a relief valve which comprises an in-line check valve connected serially downstream from the vanishing chamber, the relief valve including an axial flow passage terminating at a valve seat, and a movable valve element having a resilient plug insert which is larger in diameter than the valve seat which closes against the valve seat. The resilient plug is held in a surrounding metal skirt. A stem and coil spring guide the resilient plug to a closed position. When abrasive particles are delivered through the oil flow, they impinge against the resilient plug and avoid abrasion of the metal components around the valve seat. This then deflects the flow at reduced velocity into a larger surrounding chamber and thereby reduces downstream damage.
REFERENCES:
patent: 3385370 (1968-05-01), Knox et al.
patent: 3970106 (1976-07-01), Harris
patent: 4046011 (1977-09-01), Olsen
patent: 4403518 (1983-09-01), Welker
patent: 4440032 (1984-04-01), Welker
patent: 4470773 (1984-09-01), Welker
patent: 4583293 (1986-04-01), Smith
patent: 4628750 (1986-12-01), Welker
Ham Seung
LaRoche Eugene R.
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