MECHANISM FOR FIXING A SENSOR TO AN IN-LINE FLAW DETECTOR BODY

摘要

The invention relates to devices for in-line non-distructive inspection of pipelines, more specifically to a mechanism for fixing an in-line flaw detector sensor. The inventive mechanism comprises a double-arm lever provided with a sensor fixed to the end of first arm thereof, and a second lever, one end of which is hingedly connected to the hinged support of the first lever and the second end is hingedly fixed to the body. Said mechanism also comprises a third lever, the end of which is hingedly connected to the end of the second arm of the first lever and the second end is hingedly fixed to the body and a fourth lever whose one end is hingedly fixed to the flaw detector body, where said third lever is fastened, whereas the other end thereof is hingedly connected to the second lever, where the support is arranged and divides the third lever into two arms. The first and fourth levers and the corresponding arms of the first and second levers form a rhombus in a diagonal of which the levers are connected to a spring which works in tension and presses the sensor to the internal wall of an inspected pipe.