Dielectric ring gaskets and related methods and assemblies for detecting internal current transfer in a pipeline
AssigneeFocus Corrosion Inc.
InventorMark Bissett
Life of this patent
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Abstract
An electrical insulating flange gasket has an electrode on the internal diameter of the gasket, and a test point on the external diameter of the gasket, for the purpose of measuring internal current transfer.
Claims27
A pipeline joint assembly comprising:
- first and second pipe fittings each formed with a pipe body and a ring flange, with the ring flanges aligned, and mated via fasteners extended between aligned aperture arrays in the ring flanges;
- a dielectric ring gasket between the ring flanges and having:
- first and second dielectric ring portions;
- and
- an electrode isolated between the first and second dielectric ring portions and extended from an inner circumferential edge and an outer circumferential edge of the dielectric ring gasket;
- and
- an electrical characteristic sensor connected to the electrode.
A method comprising measuring an electrical characteristic between a side of a joint assembly in a pipeline and an electrode isolated within a dielectric ring gasket that is between mated ring flanges of the joint assembly;
- and
- in which:
- a cathodic protection system is connected to a first side of the joint assembly in the pipeline;
- and
- the electrical characteristic is measured between a second side of the joint assembly and the electrode.
A method comprising measuring an electrical characteristic between a side of a joint assembly in a pipeline and an electrode isolated within a dielectric ring gasket that is between mated ring flanges of the joint assembly;
- and
- measuring an electrical characteristic across the first side and a second side of the joint assembly.
Dependencies are inferred from the claim text.