Water intake system for water conservancy project

Abstract

The invention discloses a water intake system for a water conservancy project. The water intake system is constructed on a river channel, and comprises an overflow weir, a water intake device and a sand-settling device which are continuously arranged in sequence from one side to the other side of the river channel; the overflow weir is used for retaining water and overflow flood discharge, the water intake device is a dam structure horizontally arranged along the river channel, the water intake device comprises a retaining dam body at the front end surface, a water inlet at the top surface anda dam body at the rear end; the water inlet is arranged obliquely and downwards along the direction of the water flow, and a water inlet grill arranged obliquely and downwards along the direction ofthe water flow is arranged on the upper opening plane of the water inlet; the dam body of the water intake device is a hollow water channel, and the outlet of the water channel is connected with the inlet of the sand-settling device. The technical scheme of the invention adopts a water inlet to lead water directly, the water inlet grille is inclined downstream to facilitate the drainage of graveland realize the function of diversion and gravel drainage. The water intake system makes full use of the characteristics of small diversion flow of small-scale hydropower generation, and adopts a newmethod of diversion and drainage of gravel, so that a first hub is simpler and more practical, and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering design, in particular to the technical field of water diversion engineering design in water conservancy engineering, in particular to a design of a water intake system for small-scale water diversion power generation or water diversion engineering. Background technique [0002] In small-scale hydropower projects in mountainous areas, the first hub usually adopts the gate dam method or the low dam water intake method. The main structures are retaining dams, sand washing gates, water intakes and grit chambers, and almost all water intakes use positive water intake. The direction of the inlet of the water intake is along the water flow, and the sand flushing gate adopts the method of flushing sand and gravel in the forward direction such as the bottom hole. exclusion. Contents of the invention [0003] According to the deficiencies of the prior art, the invention discloses a ...

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Problems solved by technology

[0002] In small-scale hydropower projects in mountainous areas, the first hub usually adopts the gate dam method or the low dam water intake method. The main structures are retaining dams, sand washing gates, water intakes and grit chambers, and almost all water intakes use positive water intake. The direction of the inlet of the water intake is along the water flow, and the sand flushing gate adopts the method of flushing sand and gravel in the forward direction such as the bottom hole. exclusion of

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