AUTOMATIC WATER GATE

摘要

The invention relates to an automatic water gate provided in the form of a panel (P) that can pivot about a horizontal rod fixed to pillars installed on a weir having an active caisson (5) placed principally above the pivot rod in the upper portion of the panel (P) and having a water intake channel (9) provided in the upper portion of the panel (P) above the active caisson (5), said caisson (5) having drain holes (7) on the side of the reach downstream and being in communication with the water intake channel (9) whereas means forming a counterweight (14) are provided in the lower portion of the panel below the horizontal pivot rod whereby holding the gate in an inclined closed position so that in the event of an overflow upstream, the filling of the active caisson (5) causes the gate to tilt and be held it in a horizontal position against the force exerted by the means forming a counterweight (14), these means automatically returning the gate to a closed position when the overflowing ceases and the active caisson (5) empties. The invention is for use in a weir of a dam, pond or the like.