FIELD: pipeline transport.
SUBSTANCE: scrapper comprises longitudinal hollow housing whose front and back ends are provided with centering members for supporting the scrapper inside the pipeline and moving the scrapper by means of gas flow. The scrapper housing receives the by-pass connected with the inner space of the pipeline, siphon passage connected with liquid inside the bottom section of the pipeline, and Venturi pipe that is supported by means of the scrapper housing and is connected with the siphon passage and by-pass. The movement of the scrapper is caused by the pressure of gas that flows through the by-pass and sets the liquid in the bottom section of the pipeline in flowing through the siphon passage thus causing the liquid to flow to the tank defined by the housing of the scrapper and connected with the siphon passage. The liquid is supplied from the tank to the top inner surface of the pipeline through the outlet section of the Venturi pipe.
EFFECT: expanded functional capabilities.
7 cl, 6 dwg
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