Repetitive pressurizing test device

Abstract

Abstract PURPOSE:To apply normal pressure to bodies to be tested except one body if the one body to be tested has an oil leak due to a defect in pressure resistance by providing an on-off changeover valve which is closed in response to an oil leak to a hydraulic pressure circuit on the side where the respective bodies to be tested are taken in and out. CONSTITUTION:Repetitive pressure in plural bodies 1 to be tested is applied by oil which flows in by a hydraulic booster 19 driven by a pressure varying device, and a pressure test is taken. Then if body 11 to be tested can not withstand the applied pressure during the pressure test to have an oil leak, on-off changeover valves 15 and 16 stop the oil from flowing in and out. Further, when the oil leaks from the body 11 to be tested, an on-off changeover valve 18 is opened and a hydraulic chamber 17 supplies the leaking pressure oil to the entrance side of the on-off changeover valve 15 of the hydraulic pressure circuit 12. Consequently, the body 11 to be tested which has the oil leak to have a defect in pressure resistance is disconnected without altering a set repetition pattern and the pressure test of other bodies 1 to be tested is carried on.

Inventors

• 👤 Hiroyuki Yoshioka
• 👤 吉岡　博幸

Bibliographic Details