SEALING DEVICE FOR HIGH-TEMPERATURE CONNECTIONS Russian patent published in 1994 - IPC

FIELD: sealing joints of pipe lines and housing working at high pressure and temperature. SUBSTANCE: surface being sealed of one of clamped flanges is provided with circular groove which is located between two coaxial beads made on flange surface being sealed. Sealing member is made in form of circular diaphragm embracing the beads by its lateral surfaces and rigidly secured on these beads. Groove and diaphragm form circular chamber filled with liquid. Flange is provided with passages which bring the chamber in communication with outside liquid makeup source through the shut-off device. Made on the surface of the diaphragm are circular sealing projections. EFFECT: enhanced reliability. 2 cl, 2 dwg