Patent ID: 9637207
Date: 2017-05-02
CPC Classifications: B08B,B63B

Claim:
1. A tool for cleaning subsea surfaces, the tool, comprising: a body having a cleaning face for holding against and moving along a surface to be cleaned, the cleaning face comprising an inner region having a shape convex or corresponding to the surface to be cleaned and a flat region having a flat surface, the flat region extending from the inner region to a peripheral edge of the cleaning face, the flat region having a ring shape with a radial width of at least 10 mm; a means for distance control of the cleaning face of the body such that a gap is provided between said flat surface of the flat region of the cleaning face and the surface to be cleaned when the tool is in operation; at least one of cleaning nozzles and brushes arranged in the inner region; a suction outlet for water, debris, and contamination inside the inner region, the suction outlet being arranged in the inner region and being connected to a suction device so that water, debris, and contamination is drawn into the suction outlet for transport to further treatment; wherein the suction outlet creates underpressure in the inner region during operation; and wherein the flat surface provides enhanced underpressure and suction effect of the tool towards the surface according to a venturi effect, by water flowing from outside the tool to the inner region without increasing friction.