PRESSURE TIGHT FLANGE CONNECTION FOR CHANNELS OF GAS OF HIGH PURITY AND HIGH PRESSURE Russian patent published in 2011 - IPC F16L23/32 

FIELD: machine building.

SUBSTANCE: pressure tight flange connection for fluid medium channels consists of first flange with first channel of fluid medium and cylinder front cavity. The first fluid medium channel passes in axial direction through the first flange for outlet in support surface. A polymer packing ring has radial external surface and radial internal surface. The packing ring is inserted into the cylinder front cavity so, that its radial external surface contacts periphery surface of the front cavity. The second flange is split connected with the first flange and has the second channel for fluid medium. This channel axially continues the first fluid medium channel. In axial direction the second channel has a cylinder front nipple with a conic head; also, the second channel of the fluid medium comes into end surface of the conic head in axial direction. The conic head contacts radial internal surface of the packing ring and radially holds down its radial external surface to periphery surface of the front cavity.

EFFECT: increased reliability of connection.

16 cl, 6 dwg