DEVICE FOR CLEANING STAGNANT WATERS OF COVES AND BAYS OF THE PIPELINE WITH A WAVY INNER HELICAL SURFACE Russian patent published in 2016 - IPC E02B15/00 E02B3/00 E02B8/02 

FIELD: environmental protection.

SUBSTANCE: device comprises a block of one or more bent pipes interconnected sides and mounted in a single unit which is mounted on the coastal currents flow path direction changing part of the water flow, increasing their speed and the introduction of these streams deep waters bays and gulfs. Each conduit is made as coaxially arranged and rigidly interconnected by hollow screw drums, for example, four: conical shaped helical drum - receiving section and two straight helical drum - rectilinear sections between which there is rigidly mounted a hollow sector with an angle of bending 20-180° and more. Conical shaped helical drum - receiving section is mounted with five or more bands of a convex curved shape, formed by the lateral edges of each of the bands curve of the second degree of curvature with different sizes in the strip width with decreasing length of the receiving section from the inlet to the outlet, folded in a vertical plane in the longitudinal direction and the bent along helical lines in the transverse direction of the mandrel in the form of a paraboloid of revolution to form a perimeter inside the receiving portion helical line and the helical cam surfaces of convex shape with respect to the axis of symmetry of the receiving portion with the centers of curvature of the inside of the receiving portion, and the inlet inside a helical blades along the entire length from the inlet to the outlet of the receiving section. Each of the two hollow rectilinear sections made of at least one strip bent sinuously disposed at an angle to their longitudinal edges along fold lines to form on the outer and inner surfaces directed to one side at an angle of 30-70° to the axis of the hollow section straight helical surfaces in the form of pockets waveform. Shape and dimensions of the pockets on the inner surface can be different from the shape and dimensions of the pockets on the outer surface and the perimeter hollow rectilinear section pockets can be different not only in shape but also in size. Hollow section is made from a strip folded into a ring to form different size quadrangles with two parallel sides positioned parallel to each other. Sections are connected to each other free sides of said quadrangle in form of a hollow pipe with a wavelike shape passage section, to form on the outer and inner surfaces directed to one side at an angle to the longitudinal axis of the conduit with a wavelike shape passage section undulating helical surfaces in the form of pockets waveform by outer and inner surfaces that are on the perimeter of the pipeline with the flow cross section of the waveforms may differ not only in shape but also in size. Distance between flexure lines equal the sum of lengths of perimeters of geometrical figures of inner and outer surface recesses.

EFFECT: provides clearing stagnant and polluted waters of zones bays and inlets by creating within them a constant circulation of clean sea water.

1 cl, 24 dwg