| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressurizing device for testing the inside of a pipe, which can simultaneously carry out the pressure test and the leakage test for a plurality of piping systems, on which different amounts of test pressure are applied, by using the single device. SOLUTION: The secondary side of the hydraulic pressurizing device 2 is divided into a plurality of branch tubes 3a, 3b, 3c and 3d, and reducing valves 4a, 4b and 4c corresponding to the plurality of piping systems 1a, 1b, 1c and 1d, on which the different amounts of test pressure are applied, are disposed at these branch tubes. Pressurized fluid ejected from the hydraulic pressurizing device is regulated using the reducing valves and simultaneously supplied to the plurality of piping systems 1a, 1b, 1c and 1d. Thereby, the pressure test and the leakage test for the plurality of piping systems, on which the different amounts of test pressure are applied, can be simultaneously carried out. It is preferable to employ a water pressurizing device 2A and a pneumatic pressurizing device 2B. A pretest is carried out using pressurized air, the pressure of which is lower than the above test pressure, and the presence or absence of leakage of air is checked. In the case the leakage of air does not exist, the pressure test and the leakage test are carried out using pressurized water.
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