| 摘要 |
For inserting or removing a probe (13) which is subjected to high pressure in a process pipe or a tank, a nipple (12) is attached to the pipe (11) or the tank. The nipple can be secured by a cover (14) but after removing the cover a ball valve (15) can be attached to the nipple. A hydraulic cylinder (16) is then externally connected to the ball valve. A pressure differential can thus be created to pull the probe out or push it in through the ball valve. Once the probe has passed through the ball valve, the valve can be closed and the probe can be removed from the cylinder and replaced, if necessary. A piston may be present in the cylinder and connect to the probe through the ball valve to remove or replace said probe. |
