FIELD: treatment.
SUBSTANCE: invention relates to cleaning of inner cavity and in-pipe diagnostic of technological pipelines pumping stations of liquid hydrocarbons and oil processing enterprises. Method of moving in-tube device in the technological pipeline provides cleaning and diagnosing of the inner cavity of the technological pipeline with a roud trip of the in-tube device, which is carried out by alternate switching of the steam of working environment in the forward and reverse directions after achievement by the in-tube device of extreme position on one or other end of section of technological pipeline.
EFFECT: cleaning device is equipped with two pairs of shearing units, each of which by means of the movable joints is attached to terminal surfaces of the cylindrical case of the in-tube cleaning device.
1 cl, 3 dwg
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