| 摘要 |
PURPOSE:To test the strength characteristics and tightness of a pipe and a pipe joint in a state approximate to a use state, by connecting the pipe and the pipe joint to the joint part received in a hermetically closed chamber and imparting mechanical load and fluid load to both of them. CONSTITUTION:A hermetically closed joint testing apparatus 2 is placed on a fixed stand 1 and the connection part 4a of an object 4 to be tested such as a pipe and a pipe joint is connected to the joint part 3 in the chamber 2. A valve 25 is opened to send a fluid having desired pressure into the film body 12 of a pressure tank 11 from a route 15 and valves 24, 23 are opened to pressurize the tst fluid in the pressure tank 11 while the pressurized test fluid is sent to a heating tank 6 to be heated to desired temp. by a heating means 7. When a valve 22 is opened, the test fluid is introduced into the object 4 to be tested from the joint part 3 to impart fluid load thereto and, at the same time, mechanical load is applied thereto compositely by a vibrator 29. By this method, the test of strength characteristics and tightness can be performed to the object 4 to be tested under a condition almost the same to that at the time of use. |
