| 摘要 |
An in-line type fluid hammer prevention device capable of maintaining pressure energy conversion efficiency of elastic cushion for a long time by improving fluid sealing tightness against an elastic cushion by elastic cylindrical diaphragm, wherein an inlet cylindrical connecting body (1) and an outlet connecting body (3) are connected at an intermediate position of fluid channel (R) of a piping system in series, and both ends of a sleeve (5) is positioned between center through-holes (1C, 3C), and a cylindrical diaphragm (7) is placed around the outer periphery side of small holes (5E) provided on the wall of the sleeve (5), and inward lip portions (7A, 7B) at the both ends of the cylindrical diaphragm (7) are pressed and supported by the protrusive flanges (5C, 5D) and the recessed seats (1D, 3D), and an elastic cushion (8) is placed outside the cylindrical diaphragm (7) around the outer periphery side of the small holes (5E) of the sleeve (5).
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