An underwater opening and closing device and opening and closing method of a gate for assisting fish migration upward

Abstract

The invention discloses a gate underwater opening / closing device for assisting fish migration and upstream going and an opening / closing method based on the gate underwater opening / closing device for assisting the fish migration and upstream going, and relates to the technical field of gate opening / closing. The gate underwater opening / closing device for assisting the fish migration and upstream going comprises a power line, an electric lifting rod, a water sealing seat and square steel, wherein the power line is connected with an external control system, and conveys power required by a driving motor of the electric lifting rod; the driving motor drives a ball screw to rotate in a nut through a reduction gear unit; and the ball screw converts rotary motion into linear motion of the nut to push a push rod to rise and open a gate. The water sealing seat comprises round steel, an oil seal and bolts; the outer sides of the electric lifting rod and the water sealing seat are sleeved and connected with the square steel, and the water sealing seat and the square steel prevent water leakage of the electric lifting rod. According to the invention, waterproof measures are improved, the common electric lifting rod opens and closes the gate underwater, the underwater opening / closing method can prevent a hydraulic jump phenomenon under the gate, and hydrodynamic conditions beneficial to the fish migration and upstream going are formed.

Description

technical field [0001] The invention relates to the technical field of gate opening and closing, in particular to an underwater gate opening and closing device and an opening and closing method for assisting fish to migrate upwards. Background technique [0002] Gates are usually used in hydraulic structures such as overflow dams, bank spillways, scuppers, and hydraulic tunnels. They have the functions of intercepting water flow, controlling water level, regulating flow, controlling shipping, and discharging sediment and floating objects. With the rapid development of my country's economy, the scale of my country's construction of water conservancy projects is getting larger and larger, and the dam body is getting higher and higher. The impact of dam construction on the river ecosystem is also becoming more and more serious. Although fish pass facilities such as fish gates and fish lifts have been used in medium and high head water conservancy projects, due to the water flow...

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an underwater opening and closing device and opening and closing method for assisting fish to migrate upwards, so as to solve the insufficient waterproof performance of the existing electric lifting rod when opening and closing the gate underwater It not only ensures the safety of the underwater opening and closing of the gate, but also assists migratory fish to cross the dam in time, improves the fish passing effect of the fishway, and protects natural fishery resources

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