Protective cover assembly with reverse buckling disc
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United States of America Patent
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-
Sep 20, 1988
Grant Date -
N/A
app pub date -
Feb 2, 1987
filing date -
Feb 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A protective cover assembly for a fluid end of a plunger-type pump or other positive displacement pump. The protective cover assembly includes a cover adapted to fit in an open end of the fluid end of the pump. The cover comprises a convex or domed center portion adapted for buckling away from a plunger of the pump when pressure in the pump exceeds a predetermined level and further comprises an outer portion. A cover retainer is engageable with the open end of the fluid end of the pump and is adapted for clamping the outer portion of the cover to the fluid end. A seal is provided between the outer portion of the cover and the fluid end. The convex center portion of the cover has a convex surface generally facing the plunger, and the convex surface is preferably hemispherical. In one embodiment, the convex center portion has a substantially constant cross-sectional thickness, and in an alternate embodiment, the convex center portion has an enlarged section adapted for affecting a pressure level required for buckling the convex portion. A method of preventing overpressure in a fluid end of a plunger-type pump using the protective cover assembly is also disclosed.
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