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The operating principle, advantages and use of water conservancy automatic control flap steel gate

Edit:Xinertai Hydraulic MachineryUpDate:2019-06-14

The operating principle, advantages and use of water conservancy automatic control flap steel gate:
1. Operating principle
The hydraulic automatic control flap gate is an automatic gate that takes advantage of the effects of water power and power, and uses the principle of water power and the weight balance of the gate to open and close automatically with the change of flow under a certain water level. During operation, as the upstream water level rises, the discharge is gradually opened; the upstream water level drops, and the water level is gradually returned to the station gate to keep the upstream water level within the required range (ie the normal upstream water level). This gate is composed of door leaves, legs, buttresses, rollers, connecting rods, etc. When the upstream flow increases and the water level upstream of the door rises, and the torque of the hydrodynamic pressure on the fulcrum is greater than the torque of the door weight and friction 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 is equal to the moment of the door weight to the fulcrum, reaching a new balance under this flow. When the flow rate does not change, the opening angle also does not change. When the upstream flow is reduced to a certain extent, the torque of the door weight on the fulcrum is greater than the torque of the hydrodynamic pressure and friction on the fulcrum, the hydraulic automatic flap gate can automatically return to a certain inclination angle to reach a new balance under the flow . Therefore, the hydraulic automatic control flap gate has the characteristics that it does not require opening and closing machinery and corresponding facilities, and does not require manual operation, and is completely controlled by the water flow in time.
2. Strengths and use
1. Unique principle, subtle effect, simple structure, convenient production and safe operation.
2. The construction is simple and the cost is reasonable, and the investment is only about 60% of the conventional gate
3. Active opening and closing, accurate self-control water level, good stability during operation.

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