STRUCTURE AND METHOD FOR PREVENTING FOULING OF ORGANISM IN SEA WATER

PURPOSE:To eliminate the elution of a contaminant and to prevent the fouling of a marine organism to the surface of a body by constituting the title structure of a vibration film covering the surface comming into contact with seawater and a drive means finely vibrating the vibration film. CONSTITUTION:The surface of the cooling water taking-in port of a power plant designated as a body for preventing the fouling of an organism is coated with a vibration film 2 composed of a substance having rubbery elasticity. It is necessary to entirely coat the surface comming into contact with seawater 3 of the vibration film 2. There is a submerged speaker 4 as the drive means vibrating the vibration film 2 composed of a rubber elastomer but any one generating vibration waves in water may be used. As the vibration film, there is a rubber elastic member, a member wherein a film itself is vibrated by the application of an electric signal or one having a member vibrated by applying an electric signal to a rubber elastic part partially embedded therein. As the member wherein the film itself is vibrated, there is a vibration film composed of lead titanate zirconate (PZT) and this PZT generates bending vibration action by an electric signal generated by the flow of a current.