Water fin removing tool

Abstract

A water-wring eliminating element is a quadrangular frustum pyramid structure, whose front end face and back end face are located on the same horizontal plane, wherein the height h1 of the front end face is 1-1.1 times of water depth on the tail of lock pier, and the width b1 is equal to the width of the lock pier, and the height h2 and the width b2 of the back end face are decided by the type of an over-fall dam, the height h2 of the back end face is 0.5-0.6 times of the water depth on the end face position and the width b2 is the 1 / 7-1 / 6 of the width of the lock pier if the over-fall dam is a utility dam type, and the height h2 of the back end face is 1-1.1 times of the water depth on the end face installation position, and the width b2 is the 1 / 8-1-6 of the width of the lock pier if the over-fall dam is a broad-topped dam, and the distance d between the front end face and the back end face is 5-6 times of the width of the lock pier. The water-wring eliminating element is installed on the back of the lock pier in an over-fall tunnel or a river tunnel gate dam, which can eliminate the water-wring phenomenon on the back of the over-fall tunnel or the river tunnel gate dam, and improves the water flow state in the over-fall tunnel or the river tunnel.

Description

technical field [0001] The invention belongs to drainage facilities used in water conservancy and hydropower projects, in particular to a drainage facility applied behind a spillway pier or a river gate pier to eliminate the phenomenon of water fins. Background technique [0002] In the spillway layout of water conservancy and hydropower projects, due to the large overflow width of many spillways, gate piers are required in the middle. In order to meet the structural stability requirements of gate slots and gate piers, the width of spillway gate piers is often greater than 3m, and the spillway gate hole Generally, they are steep slopes. In this arrangement, when the spillway flows, the two streams behind the pier collide with each other to form a serious water fin phenomenon, which causes the flow state behind the spillway to be disordered and increases the pressure on the side wall of the spillway. The pulsating pressure produces obvious rhombic ...

AI Technical Summary

Problems solved by technology

[0002] In the spillway layout of water conservancy and hydropower projects, due to the large overflow width of many spillways, gate piers are required in the middle. In order to meet the structural stability requirements of gate slots and gate piers, the width of spillway gate piers is often greater than 3m, and the spillway gate hole Generally, they are steep slopes. In this arrangement, when the spillway flows, the two streams behind the pier collide with each other to form a serious water fin phenomenon, which causes the flow state behind the spillway to be disordered and increases the pressure on the side wall of the spillway. The pulsating pressure produces obvious diamond-shaped waves, and the height of the side wall of the spillway needs to be increased, thereby increasing the project investment

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