CORRUGATED PIPING, AND COOLING PIPING WITH THERMAL CONTRACTION RELAXATION MECHANISM

To provide piping capable of suppressing axial thermal contraction in cooling without adversely affecting a cooled object.SOLUTION: Corrugated piping includes a pipe wall on which crest portions and trough portions are alternately formed along an axial direction, and a contraction suppression member disposed on at least one side of the crest portions and the trough portions. The contraction suppression member has at least one of a first member having a thermal expansion coefficient larger than that of the pipe wall at least at an outer portion, and attached to the crest portions to expand an angle of the crest portions in thermal contraction of the pipe wall, and a second member having a thermal expansion coefficient smaller than that of the pipe wall, and attached to the trough portions to suppress thermal contraction to a radial inner side of the trough portions in thermal contraction of the pipe wall.SELECTED DRAWING: Figure 1 【課題】被冷却体に悪影響を与えずに冷却時に軸線方向の熱収縮を抑制可能な配管を提案する。【解決手段】一実施形態に係る波形配管は、軸線方向に沿って山部と谷部とが交互に形成された管壁と、前記山部又は前記谷部の少なくとも一方に設けられた収縮抑制部材と、を備え、前記収縮抑制部材は、少なくとも外側部が前記管壁よりも大きい熱膨張係数を有し、前記山部に取り付けられて前記管壁の熱収縮時に前記山部の角度を広げるための第１部材、または、前記管壁よりも小さい熱膨張係数を有し、前記谷部に取り付けられて前記管壁の熱収縮時に前記谷部の径方向内側への熱収縮を抑えるための第２部材の少なくとも一方を含む。【選択図】図１