| 摘要 |
FIELD: physics.SUBSTANCE: hose-type gamma-ray flaw detector for radiographic inspection of industrial articles has a guide tube-fitted radiation head with a housing, a blocking system with a lock and a shielding unit made of material which efficiently attenuates gamma-radiation, with combination of axial and spatially curvilinear channels, for accommodating a movable radiation source which is mounted on the end part of an elastic holder which has in its tail part an element for connection to the winding wire-fitted elastic conveyor of a remote control drive with connecting and receiving spouts, a remote drive for controlling movement of the holder of the source, fitted with a turning mechanism for a gear wheel which is interfaced with the conveyor; wherein the radiation source, which is attached to the holder, is oriented in the storage position symmetrically with respect to the input and output of the spatially curvilinear channel, and the conveyor is made on a single elastic base of a metal cord of a flexible shaft in form of a combination of two head and drive sections, wherein the head section of the conveyor lying in the connecting spout, which is connected to the holder of the source is made smooth by the value of the length of transportation on the spatially curvilinear channel and the guide tube, without coiling and equivalent to the diameter of the gear wheel of the drive section of the conveyor, is compensated by a uniform extrusion coating of a plastic compound based on a high-molecular weight wear-resistant polymer with a low coefficient of friction, e.g., a molybdenum disulphide-filled fluoroplastic; and the drive section, which is kinematically interfaced with the gear wheel of the control drive, is usually provided with a winding wire for the corresponding length for engaging the gear wheel.EFFECT: high reliability and safety of the device.3 cl, 3 dwg |
