HIGH-PRESSURE SEALING MEMBER FOR DETACHABLE JOINTS Russian patent published in 2004 - IPC

FIELD: high-pressure equipment used in units and equipment for pressurizing of detachable joints of pipelines, channels, body parts, valve-seat type connections etc.

SUBSTANCE: sealing member has female part and male part with contacting sealing surfaces of different shape. Sealing surface of male part is made concave while sealing surface of female part is made convex. Each of sealing surfaces is defined by two conical surfaces with angles of taper of . Conical surfaces are joined by channel-shaped portion and rounded portion, which have radii of same sign. Initial contact line of parts is arranged at joining portions, with ratios of . Radius of rounded portion is smaller than radius of channel-shaped portion by value providing required contact stress and absence of residual strain. Angle is less than angle angle is less than angle by values preventing materials from flowing into gaps.

EFFECT: wider range of operating pressures, enhanced reliability in operation and increased service life owing to increase in level of admissible contact stress by values exceeding yield of used materials, reduced sensitivity to overloads and contaminated working fluid.

2 cl, 2 dwg