DETACHABLE FLANGE JOINT Russian patent published in 2007 - IPC F16L23/00 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to sealing devices of flange joints of processing equipment operating at high internal pressure of working medium. Proposed detachable flange joint has attachment members, flanges to be connected and ring gasket placed in between provided with ring groove with ring member. Ring groove is made in form of ring slot whose thickness and depth is equal to 10-40 % of thickness and width of gasket. Ring member consists of separate plates made in form of parts of ring mating by side surfaces. Plates are installed without clearance with parallel surface of slot and with clearance between their outer surfaces and side surface of slot, being made of material harder than material of gasket.

EFFECT: provision of uniform specific pressures on sealing surfaces, increased reliability of sealing of joint and reduced cost of manufacture and service.

2 cl, 2 dwg