JPS6488334A - Method and device for testing actual machine artificial piping - Google Patents

Abstract

PURPOSE:To securely simulate the stress state of the piping of an actual machine by using a simple device by applying displacement to the support point of the artificial piping and simulating the actual machine. CONSTITUTION:Test piping which has cracking made by discharge working, etc., is fitted at a specific position of an artificial entrance pipe 11, and a boiler 15 is operated manually so as to obtain the same temperature and pressure with the operation state of a new type converter. In this state, high-temperature, high-pressure water is made to flow through a bias pipe 17. Then frame displacement data is extracted from a frame displacement directory and displacement is caused by a displacement adding mechanism 12 according to the data. Then solenoid valves 110 and 111 are opened to admit the high-temperature, high-pressure water in the pipe 11. In this state, the device is left as it is until the flow in the pipe 11 becomes stable and a solenoid valve 113 is closed to stop the flow of the high-temperature, high-pressure water to the pipe 17. In this state, a solenoid valve 112 is closed to quit the venting from the vent pipe 18 almost at the same time through the operation of a timer after input signals from void meters 50 and 51 decrease below a 50% void rate while the air in an artificial pressure pipe 13 is discharged.