| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-pipe air discharging method capable of easily and efficiently discharging air staying in a fluid pipe to the outside, without using a special device or the like.SOLUTION: An in-pipe air discharging method discharges staying air 5 stayed in a fluid pipe 1 to the outside of the fluid pipe 1 via communicating holes 3b-3d connecting the inside and outside of the fluid pipe 1. A sliding body 6 slidable with an inner surface of the fluid pipe 1 is introduced into the fluid pipe 1, the sliding body 6 is slid along a pipe conduit toward the communicating hole 3d, the staying air 5 in the fluid pipe 1 is captured on an outer surface of the sliding body 6, and the staying air 5 captured on the outer surface of the sliding body 6, is discharged outside the fluid pipe 1 via the communicating holes 3b-3d. |
