Patent ID: 7836844
Filing Date: 2010-11-23
Classification: B05D,F28F,Y10S

Abstract:
1. A device for protecting against corrosion and scale depositions and for restoring of a heat-exchanging tube comprising: a loading chamber, a connecting washer connecting the loading chamber to the tube, and a unit providing for translational-and-rotational displacement of a polymeric compound, the unit comprising at least two stiff washers spaced from each other, a rope, a mechanical drive and additionally containing an elastic auger causing the translational-and-rotational displacement of the polymeric compound, 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, wherein said polymeric compound has a viscosity at a state of rest of 1000-1200 poise, and the unit provides an application of said polymeric compound at a 2 to 20 fold thixotropic decrease of its viscosity.