A hydraulic flap gate is a water control device that combines hydraulic drive with the principle of a flap gate, primarily used for automatic water level regulation in rivers, reservoirs, and other locations. Its key features include:
Working Principle
Driven by a hydraulic system, the flap rotates to achieve automatic opening and closing. When the upstream water level changes, water pressure and the gate's weight create a moment balance. The hydraulic cylinder pushes the flap to rotate around a horizontal axis, adjusting the discharge angle to maintain stable water levels.
Structural Features
Bottom Horizontal Axis Design: Utilizes a bottom horizontal axis flipping structure, where the gate leaf is connected to the bottom hinge seat via self-lubricating bearings for low-friction rotation.
Hydraulic Locking Device: Equipped with components such as hydraulic check valves and electromagnetic ball valves, supporting bidirectional hydraulic transmission and automatic dam lowering without electricity.
Rapid Closing Function: Through a dual-speed hydraulic system, it supports both normal and rapid closing modes, with rapid closing time reduced to 5 seconds.
Applicable Scenarios
Suitable for projects such as rivers and reservoirs with spans of 20–40 meters and water storage heights ≤5 meters. It features a concealed structure, short construction period, and low maintenance costs.