River-closure water-diversion system suitable for slope torrent watercourse water-diversion generation and hydropower stations

Abstract

The invention discloses a river-closure water-diversion system suitable for slope torrent watercourse water-diversion generation and multistage power stations built through the same. The river-closure water-diversion system mainly comprises a water-diversion outlet, a gate pier which is arranged on a river bank at the lower course of the water-diversion outlet and close to the water-diversion outlet, a gate used for intercepting water currents and a driving supporting device which pulls and pushes the gate to rotate relative to the gate pier to change the through-flow section of a watercourse. One side of the gate is hinged with the gate pier, the other side of the gate is a free side, one end of the driving supporting device is fixed to the river bank through a hinge structure, and the other end of the driving supporting device is hinged with the gate. The multistage power stations are only provided with one river-closure water-diversion system, and tail water drained by a water turbine of a preceding stage power station is led to a water turbine of a next stage power station through a pressure pipeline to do work and generate electricity. Compared with a traditional dam-type hydroelectric mode, the river-closure water-diversion system and the multistage power stations can effectively use water energy of original flow channels, avoids damage to surrounding environments in building of a traditional dam in the traditional hydroelectric development mode under the kind of geographic geology state, and benefits ecological environment protection.

Description

technical field [0001] The invention relates to interception and diversion water generation technology, in particular to a hydropower generation interception and diversion system and a power station for controlling and adjusting a virtual pressure forebay under high flow velocity and high gradient geology. Background technique [0002] There are many urban rivers and unformed alpine river resources in high-altitude areas in my country. The common feature is that the slope drop difference of more than ten kilometers of water flow and river course is more than 500 meters. There are also water channels with larger slopes, and the high altitude points where they are located are mostly areas with intense atmospheric physical movement, and the area of ​​accumulated rainfall in the mountains is large. Because of the large area of ​​accumulated rainfall, the forest vegetation in the mountains is relatively stable, forming a normal flow The stable period is very long. However, for t...

AI Technical Summary

Problems solved by technology

However, for the hydraulic resources of secondary flow channels in high-altitude areas and water flow channels formed by urbanization, due to the high slope and high flow velocity of the flow channels in high-altitude areas, coupled with the ecological and construction conditions of the areas where they are located, it is difficult to With the current technical means, it is still difficult to develop and utilize hydropower resources

One of the main reasons why these hydraulic resources cannot be developed and utilized by electricity is that the current hydropower station must build a pressure forebay between the water diversion channel and the pressure water pipe. There are geological hidden dangers, and these reasons have become the main problems restricting the development of this type of hydropower resources.

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