Automatic measurement of pipe enlarging rate

Abstract

Abstract PURPOSE:To easily compute a pipe enlarging rate from (t1-t2)/t1 after a pipe enlarging operation is terminated by inserting a ultrasonic thickness gage in a pipe for measuring the wall thickness t2 of an enlarged pipe portion and the wall thickness t1 of an unenlarged pipe portion. CONSTITUTION:A ultrasonically measuring sensor A for measuring the wall thickness of a pipe is inserted by an inserting rod 3 such that a transducer 7 is located in the central position of a steel pipe 1 and in parallel to the axis of the pipe 1. In this condition, a pump 8 is operated to feed the water in a water tank 9 into the pipe 1 and the water is discharged from the transducer 7. Ultrasonic waves are transmitted through the water in the pipe 1 to measure the wall thickness of the pipe 1. Thus, a pipe enlarging rate can be easily computed from (t1-t2)/t1.

Inventors

• 👤 Hiroshi Kubo
• 👤 洋 久保
• 👤 Shigeo Igarashi
• 👤 五十嵐　成雄

Bibliographic Details