Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Patent
1999-03-16
2000-02-08
Hepperle, Stephen M.
Fluid handling
Processes
With control of flow by a condition or characteristic of a...
137493, 1375991, 174 22R, F16K 1702
Patent
active
060217979
ABSTRACT:
A method of controlling insulating fluid flow between fluid channels in sections of an electrical power cable at different elevations, the channel of one section being isolated from the channel of a next adjacent section by a hydraulic stop, to limit the loss of insulating fluid when a seciton is ruptured and yet permit a limited flow from the point of rupture to protect the cable from contamination. Fluid at a high rate from a lower section to adjacent higher sections around the stop is permitted by a check valve which substantially prevents fluid flow in the opposite direction and a flow-limiting valve permits fluid flow at a low rate from the higher section to the lower section. The fluid pressure difference between the sections may be relieved by a relief valve if the difference exceeds a predetermined amount.
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Brooks L. P.
Hepperle Stephen M.
Pirelli Cable Corporation
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