| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an installing tool for pipe piercing which is as simple as possible and compact, and exercises the largest hermetically sealing function in all the phases of service, in the work depending on the conventional techneque. SOLUTION: In an installing tool 1 for pipe piercing for a medium conveyer pipe, the installing tool 1 has a cylindrical part 3 for piercing in order to make a hole on the pipe wall, the cylindrical part 3 can be installed by making an angle to the pipe axis, and furthermore, the installing tool 1 includes a branch cylindrical part 8 provided by making an angle to the cylindrical part for piercing. A cutting bush 9 which can operate by rotating is provided in the cylindrical part 3 for piercing, the cutting bush 9 and the cylindrical part 3 for piercing have ridges 18 and 20 which supplement each other, at least one hermetically sealing means 23 in order to seal the medium conveyer pipe to the outer side is provided between the cylindrical part 3 and the cutting bush 9, and such a hermetically sealing means 23 is provided at the inner side in the radial direction of the supplementing ridges and/or placing a distance in the axial line from the supplementing ridges.</p> |
