| 摘要 |
<p>A mounting system for maintaining a transducer (20) in contact with a pipe (12) during testing. The system is mounted to a frame (32) which is in turn mounted for movement along a length of pipe. A first step in the testing procedure is to position the frame (32) a distance away from the pipe dependent on the pipe diameter. A carriage (34) coupled to the frame is then lowered to a scanning position and scanning takes place as the frame is moved along the pipe. A universal joint mechanism (36) connecting the carriage to the transducer (20) allow up and down and side to side movement of the transducer and thereby allows scanning to continue on pipes with bows and other irregularities along their length. When the pipe end is neared the carriage (34) is retracted away from the pipe (12) by action of a spring mechanism (154). In this retracted position downward movement of the transducer is prevented by a ball support (146, 147) coupled to the transducer and contacting a supporting surface (149) of the carriage. In this way the transducer will not fall from the pipe"s end nor collide with the end so that damage to both transducer and mount are avoided. </p> |
