| 摘要 |
PCT No. PCT/SE81/00390 Sec. 371 Date Aug. 3, 1982 Sec. 102(e) Date Aug. 3, 1982 PCT Filed Dec. 22, 1981 PCT Pub. No. WO82/02240 PCT Pub. Date Jul. 8, 1982.A quick coupling device for a fluid-tight, especially temporary connection to a pipe nipple (1) or the like, comprising a cylindrical casing (5,14), which is mechanically connectable to the pipe nipple, and a coupling piston (16,18), which is displaceably disposed in the cylindrical casing and which is permanently connectable to a pressurized fluid conduit (4) and has a through-going opening (27) for the passage of pressurized fluid to said pipe nipple, the coupling piston being displaceable, by the action of a separate actuating fluid (via 30), into sealing (21) contact with the end surface (22) of the pipe nipple (1). A separate actuating piston (29) is displaceable by the actuating fluid and adapted to actuate (32) the coupling piston (16,18) into said sealing contact, and the coupling piston has a piston surface (25) facing away from the end surface (22) of the pipe nipple and constituting a delimiting surface in an annular chamber (24) in the cylindrical casing (5), which annular chamber (24) communicates ( 23) with said through-going opening (27), said piston surface (25), by the action of the pressurized fluid, causing a force, directed against the pipe nipple (1), on the coupling piston (16, 18), whereby the sealing contact between the coupling piston and said end surface (22) is improved.
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