Hydraulic self-control flap gate capable of automatically discharging flood and controlling water level

• Main Authors: CHEN XUXUN, LI LUN, WANG JING, ZHANG JIANTAO, FAN YANGZHEN, LIU LUGUANG, ZHANG HUAN, LIU XUNHONG, WU XIA, HE JUAN, QIN JIANAN, DONG WEI
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2023
• Subjects: FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING

The invention relates to the technical field of flood control and disaster reduction, and discloses an automatic flood discharge and water level controllable hydraulic self-control flap gate which comprises a gate, a gate side plate, a gate bottom plate, a pawl assembly, a ratchet wheel, a manual control assembly and a manual control switch. The flap gate is unattended, and when the water level in front of the gate is flush with the upper edge of the gate, the gate is in an overturning critical state; when the water level in front of the gate is higher than the upper edge of the gate, hydraulic torque is larger than self-weight torque of the gate, the gate automatically turns over and is opened under the action of water pressure, and the gate begins to discharge water through overflowing; after water drainage reaches a certain time, the water level in front of the gate drops to be lower than the upper edge of the gate, the hydraulic torque is smaller than the self-weight torque of the gate, the gate automatic