DEVICE FOR REDUCTION OF HYDRAULIC LOSSES IN PIPELINE Russian patent published in 2019 - IPC F15D1/06 F17D1/20 

FIELD: transportation.

SUBSTANCE: device is intended for hydraulic transportation of oil, oil and liquid products of oil refining in petrochemical industry. Device comprises helical coil elements, wherein in direction of fluid motion coils are made in form of elements with gradually decreasing cross-sectional area and with simultaneous increase in pitch of turns by 2 times every 0.5 turns, each spiral element contains 1.25…1.5 turns at initial pitch length for half of revolution equal to 0.35…0.5 from pipeline inner diameter depending on physicochemical properties of transported liquid, coils in cross section are made in form of combination of concave and convex surfaces of second order with interface between them along rib of turns, facing pipeline axis, cross-section area of each turn is from 1/4 to 1/8 of the area of the circle, which is described by extreme points of the greatest arc of the cross section of the coil, the turns are made with double-helical diametrically opposite location of initial approaches, 1.25…1.5 turns of spiral coils turns into smooth inner surface with length of this section of 0.35…0.5 of pipeline inner diameter.

EFFECT: reduced pressure losses for liquid friction against coils for flow swirling.

1 cl, 5 dwg