F - Mech Eng,Light,Heat,Weapons – 17 – D
Patent
F - Mech Eng,Light,Heat,Weapons
17
D
137/108
F17D 1/00 (2006.01) F17D 1/08 (2006.01)
Patent
CA 1097184
ABSTRACT OF THE DISCLOSURE A fluid flow control system e.g. for an integrated continuous fluid reagent production facility and one or more reagent consumption facilities, involving an interconnected reagent storage facility, has fluid flow control valves connected together and sensing the demand and supply situa- tion to the consumption facilities, to provide continuous even flow of reagent either from production or from storage or both. A main valve ensures that, whenever possible, demand for reagent is satisfied directly from production. A storage withdrawal valve ensures that, in the event that the reagent flow through the main valve is insufficient to satisfy demand, the flow to the consumption facilities is supplemented by withdrawals of reagent from storage. The fluid flow valves are operated by signals deriving from the fluid flows and pressures at various locations in the system. The storage withdrawal valve is fed with a bias signal derived from the rate of production of reagent in the production facility, which maintains it at its threshold opening condition when demand is being satisfied completely by flow through the main valve. Then in the event that demand increases beyond that which can be satisfied by the flow through the main valve, the storage withdrawal valve opens immediately to satisfy the demand and maintain substantially continuous flows without deadbands or surges of reagent.
315084
Petrosar Limited
Stewart & Kolash Ltd
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