| 摘要 |
The apparatus for removing a pump from a tank containing cryogenic fluid, has a tube (86) with a bore (92) through it. A discharge pipe (88) extends through the tube bore, and has an attachment device to connect to a pump (32) discharge. A seal (90a) joins the discharge pipe at one elevation and a second seal (90b) joins the discharge pipe at a second elevation below the first seal elevation. The second seal is spaced apart from the first seal to define a vent zone (130) between them. A third seal (90c) join the discharge pipe at a third elevation below the second seal elevation, the third seal spaced apart from the second seal to define a purge zone (132). The apparatus has a line (136) for purging the purge zone.
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