| 摘要 |
PURPOSE:To perform a work to remove foreign substance from an insertion tube safely when the insertion tube is clogged by some foreign substance, by making a seal pot detachable, into which the insertion tube having a gas extracting function is inserted. CONSTITUTION:A seal pot 21 is provided in the outside of a seal drum 3, and it can be removed by closing sluice valves 24 and 25. At the top of a seal pot 21, elevatedly removable insertion tube 27 is provided and the lower end of the tube 27 is open to the sealing liquid 4 in the seal pot 21. The insertion tube 27 has a function to extract gas. The upper end of an insertion tube 27 is connected to a knockout drum 1 by the intermediary of a connecting tube 28. With such an arrangement, a work to remove foreign substance from the insertion tube 27 can be performed safely, by removing the seal pot 21 even a drive device is in operation, when the tube 27 is clogged by some foreign substance in the pipe line. |
