| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping pulsation pressure test system capable of reliably testing pipings by water hammer phenomena and adapting to a water quantity held by a piping to be tested by changing the capacity of pressure tanks. SOLUTION: The piping pulsation pressure test system generates pulsation pressure in a liquid in the piping 26 to be tested by periodically performing the operations of pressurizing and reducing a pressure of the liquid in the piping 26 to be tested. The piping pulsation pressure test system is provide with a plurality of sub pressure tanks 22<SB>1</SB>-22<SB>3</SB>connected via tank closing/opening valves 29<SB>1</SB>and 29<SB>2</SB>which supply the liquid for the inside of the piping 26 to be tested and an electrically-operated rotating ball valve 24 provide for a piping 27 connecting a main pressure tank 22<SB>1</SB>to the piping 26 to be tested for closing and opening at a prescribed period as a pressurizing device and a pressure relief valve 25 for discharging the liquid from the inside of the piping 26 to be tested as a pressure reduction device. COPYRIGHT: (C)2006,JPO&NCIPI
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