| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device of a water cutoff body which watertightly fits a water cutoff body in a discharge port. SOLUTION: The sealing device of the water cutoff body discharges cutting chips generated when an existing fluid pipe in a casing 2 is cut off or drilled, together with a fluid via conduits 12, 13 connected to the discharge port 6 formed in the casing 2, and a discharge channel connected to the same via an on-off valve 9, to the outside of the casing 2, and to watertightly cut off the water cutoff body 7 for cuting off the discharge port 6, into the discharge port 6 by a water cutoff body sealing means 10 arranged in the conduits 12, 13 in a movable manner. The water cutoff body sealing means 10 has both ends thereof communicating with each other, and includes a storage portion 27 for watertightly storing therein the rear end of the water cutoff body sealing means 10. The conduits 12, 13 communicate with the storage portion 27 via the water cutoff body sealing means 10. COPYRIGHT: (C)2009,JPO&INPIT
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