DEVICE FOR CLEANING OF PIPELINE INTERNAL SURFACE Russian patent published in 2014 - IPC B08B9/53 

FIELD: oil and gas industry.

SUBSTANCE: device for cleaning includes seals installed in series at the shaft and having uniformly placed circular openings which centres are placed at circumferences concentric with the seals and these circumferences divide the annular area of the seals into equal parts between the pipeline and the device shaft. The device shaft is built-up with a spherical joint in order to increase flotation ability of the bent pipeline. Seals at the built-up shaft are installed with intervals between the first and second seals and the third and fourth seal equal to 0.36D, the interval between the second and third seal is equal to 0.55D. Diameter of openings in the first seal is equal to 0.015D; in the second seal - 0.010D; in the third seal - 0.007D; in the fourth seal - 0.006D. Openings are made with angular offset to the half of the central angle between the neighbouring openings in regard to openings of the neighbouring seal.

EFFECT: improving operational reliability of the device and quality of cleaning for internal surface of pipelines from deposits of high-molecular hydrocarbons.

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