PLANT FOR FLOW-THROUGH WASHING OF OIL PRODUCING PIPES Russian patent published in 2002 - IPC

FIELD: washing plants; oil, gas and chemical industries; washing inner and outer surfaces of oil-well tubing, sucker rods, oil-well pumps and other items of oil equipment. SUBSTANCE: proposed plant includes heat-insulated bath provided with chamber fitted with cover, steam header and bottom of washing solution return passage, chamber with accumulating baskets for sludge and light fractions and side vertical passages for overflow of center portion of main flow from loading chamber to washing solution return passage. Proposed plant is also provided with electrically-driven water-jet units mounted vertically on bath and provided with elbow-shaped water conduits with supercavitating propellers, ejector pump for forming high-velocity circulating flow of washing solution, bearing plates mounted on detachable plating of bath at different heights for placing the tubes at inclined position and electric pump for transfer of washing solution. EFFECT: increased productivity; improved quality of washing due to forming effective circulating flow of washing solution. 2 dwg