BELLOWS TYPE SELECTIVE WATER INTAKE EQUIPMENT

PROBLEM TO BE SOLVED: To provide bellows type selective water intake equipment capable of having the excellence in durability and reducing maintenance expenses, being specially advantageous in terms of a manufacturing cost and an installation cost, systematically folding a bellows-shaped water intake cylinder and preventing the occurrence of a resonance motion in the bellows-shaped water intake cylinder. SOLUTION: In order to intake water in an optional layer of a dam, a water intake passageway forming body 5 vertically placed along a dam body is constituted of the expansible bellows-shaped water intake cylinder 20, the bellows-shaped water intake cylinder 20 connecting a plurality of circular bodies 21 having the circumferential shape of a truncated cone in series is connected through a plurality of internal diameter side pipe materials and outer diameter side pipe materials, the bellows-shaped water intake cylinder can be systematically folded on a circular receiving section of a waterway connecting body connecting the lower end section thereof, an intermediate supporting mechanism regulating the displacement in the horizontal direction is provided to a middle part in the direction of the height of the bellows-shaped water intake cylinder, a plurality of band members connecting a pair of outer diameter side pipe materials adjacent to up and down to each other are provided, and the band members can be surely bent outward in the case it is folded. COPYRIGHT: (C)2007,JPO&INPIT