| 摘要 |
<p>A pipe and sleeve telescoped joint with the pipe (13, 14) and sleeve (12) in sealing engagement and keys (15) embedded in both pipe (13, 14) and sleeve (12) at their interface. The size and number of the keys (15) are calculated from the size and strength of the pipe. The sleeve (12) is sized and its strength selected from the strength of the pipe, and the sleeve ends are shaped to hold the joint circular when it is made. The apparatus includes holding assembly (26) for holding the midportion of the sleeve (12) circular when creating the joint, and for cooperating with the sleeve ends to keep them circular. The sealing engagement is created by firing a propellant cartridge (73) into a substantially incomprressible medium, like water, held by the apparatus in a cavity (23) about the sleeve (12), and a piston (70) separates the explosive propellant cartridge (73) from the pressure medium.</p> |
