Automated process gas supply system for evacuating a process lin

Details Automated process gas supply system for evacuating a process lin Automated process gas supply system for evacuating a process lin

1995-05-18

1997-02-11

Hepperle, Stephen M.

Fluid handling

Processes

Cleaning, repairing, or assembling

137 38, 137239, F16K 1736

Patent

active

056011075

ABSTRACT:
A process gas supply system at the gas supply point includes an automated means for evacuating gas in a process line fed by the process gas supply system when an abnormal event occurs. The process gas supply system of this invention eliminates the need for any special valves or piping at the point of use of the process gas as well as the need for a return line from the point of use to the process gas supply system to purge the process line. A process gas is contained in a cylinder under pressure. The cylinder is coupled to a process line by the process gas supply system. The process gas supply system includes a gas flow controller and an automatic evacuation system. The gas flow controller controls the supply of the process gas from the cylinder to the process line. In an abnormal event, process gas flow from the cylinder is blocked by the gas flow controller and the automatic evacuation system evacuates the process gas not only from the gas flow controller, but also from the process line.

REFERENCES:
patent: 4098284 (1978-07-01), Yamada
patent: 4842844 (1989-06-01), Harris et al.
patent: 4852600 (1989-08-01), Asbra et al.
patent: 5417236 (1995-05-01), Moore et al.

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