Sluice gate flow cutting off method and hinge type quick gate

Abstract

The invention discloses a flow-stopping method for a gate of a water passage, which comprises the following steps: when the reverse water flow passes through the flow channel and the gate is required to block water, the gate with a movable door leaf is lowered and the movable door leaf is kept open, and the reverse water flow flows through the opened hole. When the gate passes through, the water thrust on the whole gate is reduced, thereby reducing the frictional resistance of the gate falling, and the gate body drops rapidly by virtue of its own weight; when the bottom of the gate is about to reach the bottom sill of the flow channel, the movable door leaf is released, and the movable door leaf is under the action of the dynamic water pressure. The bottom is closed instantly, the gate body buffers and falls, and the reverse water flow is cut off. A loose-leaf fast gate, including a door slot and a door body that can move in the door slot, is characterized in that: the door body is provided with an opening, and several door leaves that are movably connected with the door body and can close the opening. One side of the body is provided with a sawtooth positioning beam, and the door slot on this side is provided with a sawtooth positioning beam slot and a bumper seat. The invention can safely and quickly complete the cut-off, and is suitable for the cut-off measures on various large and medium-sized flow channels.

Description

technical field [0001] The invention relates to a method for shutting off the flow of a gate for a water passage and a fast gate device designed for implementing the method. Background technique [0002] Since the 1960s, a large number of large-scale drainage pumping stations of various forms have been built successively in my country, and the outlets often use fast gates to cut off the flow. According to the start-up and stop characteristics of the axial-flow pump unit, the pump station requires that the fast gate can be opened quickly when the pump unit is started, and can be closed quickly when the pump unit is stopped. For example, when the water pump unit is started, the opening of the gate needs to be adapted to the starting flow rate and lift of the pump unit: if the gate is opened too slowly, the motor may be overloaded; harmful vibrations in the room. As another example, when the water pump unit shuts down in an accident, the closing speed of the fast gate must me...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the technical problem that the fast gate cannot drop quickly or even close in place when the large-scale drainage channel along the river exceeds the hump water level and shuts down in an accident, and further provides a method for cutting off the flow channel and a method for implementing The fast gate device designed by this method; the proposed method and loose-leaf fast gate device can not only safely and quickly complete the technical measures for emergency shutdown of the pumping station, but also avoid the problem of "closed gate startup" when the pump unit starts

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