PNEUMATIC-PULSE DEVICE TO CLEAN INTERNAL SURFACES OF PIPE- LINES Russian patent published in 1999 - IPC

FIELD: transportation of various liquids. SUBSTANCE: deposits are subjected to action of pulse jets running out of additional groups of conduits. Each group of conduits includes two or more adjacent conduits with converging axes distributed round perimeter of at least one cross-section of body of device which axes converge and cross at angle of ϕ =30-40 deg at distance L₀ from centers of outlets of groups of conduits determined from relation and , where d₀ is diameter of cross-section of outlet conduit; is relative distance from centers of outlets of group of conduits to internal surface of layer of deposit in direction towards crossing point of axes of given group; relative thickness of layer of deposit; L₀ is distance from centers of outlets of group of conduits to internal surface of layer of deposit in direction of crossing point of axes of given group of conduits. EFFECT: increased efficiency and productivity of cleaning of internal surfaces of pipe-lines from deposits. 5 dwg