FIELD: process engineering.
SUBSTANCE: invention relates to pipeline transportation. Pipeline scraper (in-pipe inspection piston) is driven in pipeline by compressed air flow and serves to distribute cleaning solution accumulated at pipeline bottom. Front end of pipeline scraper (in-pipe inspection piston) has atomiser elongated in lengthwise direction and furnished with the set of helical cutouts arranged at atomiser outlet side periphery. Said scraper is equipped with two perforated seal elements making the resonator that serves as low-pressure space. Cutouts create vortex effect while perforated seals make steam and solution opposite pipeline scraper (in-pipe inspection piston) be sucked into resonator and be released via holes back to atomiser outlet.
EFFECT: cleaning solution accumulated at pipeline bottom is dissipated so that a complete 360 degrees coverage of pipeline inner cylindrical wall.
21 cl, 7 dwg
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