The role of hydraulic flap gate

The flap gate can complete the active control of the water level, and is mainly used for blocking or draining water in reservoirs, rivers, and reservoirs. The hydraulic automatic control flap gate is an energy-saving and environmentally-friendly gate developed by Chinese hydraulic engineering technicians after more than 40 years of hard work and has completely independent intellectual property rights:

1. The basic principle of the flap gate is now the widely used flap gateWater conservancy flap gate, Its working principle is lever balance and rolling. Specifically, the hydraulic automatic flap gate uses water power and the weight of the gate to check and balance each other, and the intention of regulating the water level is achieved by adding a damping feedback system: when the upstream water level rises, the gate will go around the "horizontal" The shaft" gradually opens up and discharges; on the contrary, if the upstream water level drops, the gate will gradually return to close and store water, so that the upstream water level has been kept within the scope of planning requirements. For example, the roller-linked flap gate is a double-supported gate with connecting rods, composed of panels, legs, buttresses, rollers, connecting rods and other components. According to the changes in the water level of the gate, it is actively controlled by hydraulic effects. The opening and closing of the gate. When the upstream flow increases and the water level upstream of the gate rises, and the moment of the hydrodynamic pressure on the fulcrum is greater than the moment of the door weight and various damping on the fulcrum, the gate is actively opened to a certain inclination angle until the hydrodynamic pressure on the fulcrum is at this inclination angle The moment of is equal to the moment of the heavy fulcrum of the door, reaching the new balance under this flow. When the flow rate does not change, the opening angle also does not change.

2. Use hydraulic power for flap gate

Purpose of automatic control flap gate:

1) It is used in the spillway of the reservoir; it can actively adjust the capacity of the reservoir, exert the benefits of the reservoir, and ensure the safety of the reservoir. Practice has proved that its function is beyond the reach of ordinary conventional gates

2) Used in hydropower stations; according to local hydrological conditions, the reserved flood height can be effectively used to increase the water head; the sand in the reservoir is actively washed away to ensure the service life of the reservoir and obtain the economic benefits of the power station.

3) It is used for shipping and farmland irrigation; it can actively adjust the water level to satisfy the navigable water depth and irrigation water demand.

4) Used for urban environmental protection. After water storage, it can not only improve the urban ecological environment, but also meet the urban flood control requirements.