Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1981-07-21
1984-03-13
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137517, 251DIG3, F16K 1730
Patent
active
044361114
ABSTRACT:
A hydraulic fuse for shutting off the line flow once the flow through the line reaches a certain maximum predetermined value. The spring biased movable closure element of the fuse is actuated by two force generating members positioned in series, the upstream of those members generating high actuating force, rapidly increasing with the displacement of the movable closure and configured to be relatively independent of fluid viscosity. The rate of increase in the actuating force, in respect to the displacement of the closure, can be selected at any desired level permitting the use of high rate of the biasing springs and resulting in fast enough response to trigger the fuse action by flow transient, due to the decompression of hydraulic fluid caused by a ruptured line.
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Budzich Tadeusz
Gold Harold
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