US Patent 7429147 Anti-flooding device for the exploitation of water energy

An anti-flooding device with possible displacement of the waters for the exploitation of water energy includes a double closing system with an outer or inner cylindrical element with automatic, semi-automatic or manual operation, a pipe-line provided with an opening at the surface level which assures a constantly equal water level in the basin, and below which there are a plurality of pipes which come out above the surface for the air passage and for being guided to a float connected to a tubular sluice-gate that closes an opening on the bottom of the main pipe-line.