APPARATUS FOR INSPECTING TUBULAR GOODS HAVING AN AUTOMATIC SHUTTER

摘要

In the new and improved radiation apparatus disclosed herein for inspecting tubular goods, a radiation detector is coaxially positioned within a tubular member being axially translated along a selected inspection axis for receiving radiation from a radiation emitter facing the detector and mounted in a body rotating around the exterior of the tubular member. One or more radiation-attenuating devices or shutters are cooperatively arranged in the rotating body for regulating the intensity of radiation imposed on the detector. Uniquely-arranged controls are provided for selectively positioning the shutters as tubular members that are to be inspected move along the inspection axis, with these controls being adapted for operation without interrupting the rotation of the body carrying the shutters.