| 摘要 |
A pig for inspecting and/or cleaning pipelines which transport, in particular, oil, gas or water, wherein the pig has at least one flexible plastics element (26), which is retained on a pig element designed preferably in the form of a pig body (13), wherein the plastics element (26), as seen from the pig element, has at least one electromechanical transducer, which extends in the longitudinal direction of the plastics element and is intended for detecting and/or effecting a change in shape of the plastics element (26). The invention also relates to a pig disc, in the elastic side region of which at least one electromechanical transducer is present as a sensor for detecting changes in the free inner cross section of a pipeline. |
