High water head arc gate opening and closing vibration damping device

Abstract

The invention provides an opening-closing vibration reducing device for a high-head radial gate. The opening-closing vibration reducing device comprises an energy dissipation grating, a guide rail, rotating wheels, an upper baffle plate and a lower baffle plate. Under the condition of a low degree of opening of the high-head radial gate, water flow is expanded suddenly after passing through the energy dissipation grating, a flow field of the water flow is disrupted, the water flow impacts each other, higher energy loss is produced, the flowing speed is reduced, and impact force of the water flow to the gate is weakened, so that amplitude of the gate vibration is reduced and serious potential safety hazard is eliminated; when the high-head radial gate is lifted to a higher degree of opening, the energy dissipation grating is lifted with the gate together, and normal drainage is not influenced. The opening-closing vibration reducing device for the high-head radial gate is simple in structure, convenient to manufacture, mount and use, good in vibration reducing effect and low in cost and consumes little energy basically, and one simple, inexpensive and efficient device replaces the complicated high-cost prior art.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering, in particular to a high water head arc gate opening and closing vibration damping device. Background technique [0002] Arc gates are widely used due to their light structure and convenient operation. Usually, the gate vibration problem of low and medium dams is not very serious, but the arc gate under high water head condition is very easy to damage the gate due to the flow-induced vibration of the gate when the opening and closing degree is small. The flow-induced vibration is very important for hydraulic projects. It has a major safety hazard. Once the gate is damaged during water discharge, the consequences will be disastrous, so it is imminent to eliminate its harm. At present, most of the methods to solve the flow-induced vibration of the gate are mainly to increase the self-weight of the gate, increase the damping, etc. These solutions are costly and consume a lot of energy. ...

AI Technical Summary

Problems solved by technology

Usually, the gate vibration problem of low and medium dams is not very serious, but the arc gate under high water head condition is very easy to damage the gate due to the flow-induced vibration of the gate when the opening and closing degree is small. The flow-induced vibration is very important for hydraulic projects. It has a major safety hazard. Once the gate is damaged during water discharge, the consequences will be unimaginable, so it is imminent to eliminate its hazards

At present, most of the methods to solve the flow-induced vibration of the gate are mainly to increase the self-weight of the gate, increase the damping, etc. These solutions are costly and consume a lot of energy.

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