Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1980-07-21
1982-10-26
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
55169, 55219, 137 59, 137240, B08B 902
Patent
active
043556523
ABSTRACT:
A device and method for purging a liquid carrying conduit with pressurized gas, the device having a reservoir for holding a quantity of gas which is connected to a supply of pressurized gas. The reservoir is also connected to the liquid carrying conduit. In response to a first signal, a first valve isolates the gas reservoir and the supply of pressurized gas and a second valve communicates the reservoir and the liquid carrying conduit. In response to a second signal the first valve communicates the reservoir and the supply of pressurized gas and the second valve isolates the reservoir and the liquid carrying conduit. The first signal can indicate when the liquid carrying conduit is carrying liquid and the second signal can indicate when the conduit can be purged. Preferably, this device can be attached to a gas well separator to prevent freezing of the pipe conveying liquid away from the separator.
REFERENCES:
patent: 1988769 (1935-01-01), Aldridge et al.
patent: 2064962 (1936-12-01), Waters
patent: 2322304 (1943-06-01), Montgomery
patent: 2664170 (1953-12-01), Walker et al.
patent: 2842156 (1958-07-01), Huneke
patent: 2995201 (1961-08-01), Stafford et al.
patent: 3021709 (1962-02-01), Walker et al.
patent: 3765442 (1973-10-01), Nettles et al.
Morgan Christopher H.
Walton George L.
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