MAGNETIC FLOWMETER FLOWTUBE ASSEMBLY WITH SPRING-ENERGIZED SEAL RINGS

摘要

A magnetic flowmeter flowtube assembly (12, 100) includes a conduit (16) with a first end (18) and a second end (20). A first neck flange (22) is coupled to the first end (18) of the conduit (16) and has an inside diameter (129) with a first notch (128) extending radially outwardly therefrom. A second neck flange (24,124) is coupled to the second end (20) and has an inside diameter (129) with a second notch (128) extending radially outwardly therefrom. A fluoropolymer liner (42) is disposed within and extends through the first neck flange (22), the conduit (16) and the second neck flange (24, 124). A pair of electrodes is mounted relative to the liner (42) to measure a voltage induced within a process fluid flowing through the liner (42). A first spring-energized seal ring (140) is disposed in the first notch (128) and a second spring-energized seal ring (140) disposed in the second notch (128). A method (150) of sealing a magnetic flowmeter having a fluoropolymer liner is also provided.