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AssigneeObschestvo S Ogranichennoi “Nauchno-Proizvodstvennoe Obiedinenie Rokor”
InventorsVladinir Anatolievich Golovin, Vitaly Timofeevich Kuznets, Kirill Valentinovich Kublitskiy, Alexander Borisovich Ilin
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The inventive method for protecting from corrosion and scale deposit and restoring tubes of heat-exchanging equipment consists in applying a polymeric coating on the internal surface of tubes by gradually and rotationally moving an excessive volume of polymeric material therealong and in hardening said material. A polymeric compound having an at-rest viscosity ranging from 1000 to 1200 poises and a thixotropic viscosity reduction during the displacement thereof is used as a polymeric material. The inventive device for carrying out said method comprises a loading chamber (2), a connecting washer (12), a unit for progressively displacing the polymeric material provided with spaced rigid washers (4,5,6) fixed to a metallic rod (7), an elastic screw (8) having a conical shape whereby the conicity thereof ranges from 5 to 10° on the side which is opposite in relation to the connecting washer. Said elastic screw is arranged in such a way that it is enable to perform the gradual rotation, the rotation displacement being performed at a linear speed of 0.4-1.0 m/sec and the gradual displacement being performed at a speed of 1-0.49 m/sec.
A method for protecting against corrosion and scale deposition and for restoring of the heat-exchange equipment tubes by applying of a polymeric coating to the inner surface of the tubes by the way of a translational displacement of a surplus amount of a polymeric material over the inner surface of the tube at a rate of 0.1-0.49 m/s with additional rotational displacement of the polymeric material over the inner surface of the tube at a linear rate of 0.4-1.0 m/s and subsequent hardening of the material, wherein said material is a polymeric compound whose viscosity at the state of rest is 1000-12000 poise with a thixotropic decrease of its viscosity at above rate of its displacement.
A device for carrying out of the proposed method for protecting against corrosion and scale deposition and for restoring of the heat-exchange equipment tubes comprising a loading chamber, a connecting washer, a means intended for translational-and-rotational displacement of a polymeric material and comprising at least two stiff washers spaced from each other, a rope, a mechanical drive and additionally containing an elastic auger with a possibility of translational-and-rotational displacement, wherein the rotational displacement is performed at a linear rate of 0.4-1.0 m/s, while the rate of the translational motion is 0.1-0.49 m/s.
Dependencies are inferred from the claim text.