Thermal-operated valve for control of coolant rate of flow in oi

Details Thermal-operated valve for control of coolant rate of flow in oi Thermal-operated valve for control of coolant rate of flow in oi

1978-11-13

1980-06-24

Purser, Ernest R.

Wells

With time or distance measuring, temperature responsive or...

251 11, 239 75, 137 79, E21B 4300

Patent

active

042090652

ABSTRACT:
A thermally operated valve for automatic control of the rate of flow of a fluid coolant for hot gases produced by underground gasification of solid fuel deposits or by in situ combustion in oil wells, incorporating a temperature-sensitive element comprising a metal tube several meters long to be incorporated in a pipe for supplying coolant to the well, and a rod of a metal having a low coefficient of expansion coaxial with the pipe, the upper end of which rod is attached to the upper part of the metal tube and the lower end of which rod is flexibly connected to a valve member by a connecting element having adjustable clearance or play.

REFERENCES:
patent: 2610300 (1952-09-01), Walton et al.
patent: 2647017 (1953-07-01), Coulliette
patent: 3456722 (1969-07-01), Cornelius
patent: 3780803 (1973-12-01), Hardy et al.

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