| 摘要 |
PURPOSE:To take-in water from any depth of water without the use of gate or intake valve by turning an inner tube in such a way as to make any one of intake holes drilled in the inner tube coincide with the intake pipe when taking the water stored in a dam. CONSTITUTION:An outer tube 3 is buried at a slightly inclined angle to the vertical line in the dam body of reservoir 2, the lower end of the outer tube 3 is connected to a water conveyance pipe 4, and plural intake pipes 5 vertically arranged at different altitudes are connected to the outside of the outer tube 3. Also, an inner tube 7 is fitted into the outer tube 3, and in the inner tube 7, plural intake holes 10 are drilled at places in the same attitude as the intake pipes 5 and at same planar circumferential intervals. Also, a rotary driver 11 is connected to the upside of the inner tube 7. By connecting any one of plural intake holes 10 with one end of the intake pipe 5 by turning the inner tube 7, water at any depth of the reservoir can be supplied to the water conveyance pipe 4. |
