| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively reduce an impact due to the waviness of a fluid pipe resulting from a water hammering phenomenon by reasonably reforming a shock absorbing protrusion, while improving piping work efficiency by suppressing the bending property degradation of a flexible pipe or a wavy flexible pipe, and by reducing the inserting resistance of the fluid pipe. <P>SOLUTION: A shock absorbing protruded strip 3 protruded inward in the radial direction, is integrally formed on the inner wall face of the synthetic resin flexible pipe 1 to be flexibly inserted through the flexible fluid pipe 2, along the direction of a pipe axial center. The shock absorbing protruded strip 3 is constituted of: a long and elastically deformable protruded strip piece 3A extending from a specified position on the inner wall face 1a of the flexible pipe 1 toward the side of the pipe axial center X into an arrangement region S of the fluid pipe 2; and a short and elastically deformable protruded strip piece 3B branching from a site near the base end of the long protruded strip piece 3A toward the side of the pipe axial center. <P>COPYRIGHT: (C)2008,JPO&INPIT |
