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US 4,283,954 AGranted
High temperature pressure gauge
AssigneeConoco Inc.
InventorsJ. Paul Echtler, Roy O. Scandrol
Life of this patent
Estimating the term…
Abstract
A high temperature pressure gauge comprising a pressure gauge positioned in fluid communication with one end of a conduit which has a diaphragm mounted in its other end. The conduit is filled with a low melting metal alloy above the diaphragm for a portion of its length with a high temperature fluid being positioned in the remaining length of the conduit and in the pressure gauge.
Claims10
A high temperature pressure gauge apparatus, said apparatus comprising:
- (a) a conduit means;
- (b) a pressure gauge means positioned in fluid pressure sensing communication with a first end of said conduit means;
- (c) a diaphragm mounting means positioned near a second end of said conduit means;
- (d) a diaphragm means positioned in said diaphragm mounting means, said conduit means being adapted to contain a low melting metal alloy positioned in said conduit means above said diaphragm in an amount sufficient to fill said conduit means to a level between said first end of said conduit means and said second end of said conduit means, said conduit means being further adapted to contain a fluid, thermally stable at temperatures in excess of the melting point of said low melting metal alloy, said fluid substantially completely filling said conduit means above said low melting metal alloy and said pressure gauge;
- and,
- (e) a connecting means for positioning said diaphragm in pressure sensing communication with a high temperature fluid stream.
3 more elements
A high temperature pressure gauge apparatus, said apparatus comprising:
- (a) a conduit means;
- (b) a pressure gauge means positioned in fluid pressure sensing communication with a first end of said conduit means;
- (c) a diaphragm mounting means positioned near a second end of said conduit means;
- (d) a diaphragm means positioned in said diaphragm mounting means;
- (e) a low-melting metal alloy positioned in said conduit means above said diaphragm, said low-melting metal alloy being present in an amount sufficient to fill said conduit means to a level between said first end of said conduit means and said second end of said conduit means;
- (f) a thermally stable liquid positioned above said low melting metal alloy in said conduit, said liquid being thermally stable at temperatures in excess of the melting point of said low melting metal alloy and present in an amount sufficient to substantially completely fill said conduit means above said low melting metal alloy and said pressure gauge means.
3 more elements
Dependencies are inferred from the claim text.