Flood discharge and power generation energy dissipation hydropower station

Abstract

A flood discharge and power generation energy dissipation hydropower station comprises a flood discharge and power generation energy dissipation system, a diversion type conventional power generation system, a conventional spillway and unconventional spillways. The flood discharge and power generation energy dissipation system is arranged inside the conventional spillway. The middle of a conventional flow dam section is a diversion way of the flood discharge and power generation energy dissipation system. The flood discharge and power generation energy dissipation system sequentially comprises a water inlet, a drainage way, a pressure pipeline, a water turbine and a draft tube from top to bottom. A plant is arranged outside the water turbine. The conventional spillway is arranged at the top of the drainage way. The unconventional spillways are arranged at the two ends of the conventional spillway and are lower than the conventional spillway. The design thought that the flood discharge and power generation energy dissipation system and the diversion type conventional power generation system are separated is adopted, a part of surface outlet discharged flow of a overflow dam section serves as a water taking opening of the flood discharge and power generation energy dissipation system, the discharged flow passes through the drainage way, the pressure pipeline and the like and enters the special type water turbine in the plant to generate power so as to produce benefits, the effects of dissipating energy and avoiding flood discharge atomization are achieved, and no adverse influence is produced on a prior diversion type conventional power generation system.

Description

technical field [0001] The invention belongs to the field of hydropower stations, in particular to a hydropower station for flood discharge, power generation and energy dissipation. Background technique [0002] Existing hydropower stations separate flood discharge from power generation. Although the flood discharge period of water conservancy and hydropower projects is short, the flood discharge flow is large and the flood discharge power is large. Existing hydropower stations cannot use flood discharge, which limits the full use of water energy resources. The discharge water flow of modern dam construction discharge structures has the characteristics of high flow velocity and concentrated water strands. The mechanical energy of the discharge water flow is very large, far exceeding the energy that the normal water flow of the downstream river can bear. In the process of river water flow connection, it will inevitably cause bad flow state, serious erosion damage, and endange...

AI Technical Summary

Problems solved by technology

[0002] Existing hydropower stations separate flood discharge from power generation. Although the flood discharge period of water conservancy and hydropower projects is short, the flood discharge flow is large and the flood discharge power is large. Existing hydropower stations cannot use flood discharge, which limits the full use of water energy resources.

The discharge water flow of modern dam construction discharge structures has the characteristics of high flow velocity and concentrated water strands. The mechanical energy of the discharge water flow is very large, far exceeding the energy that the normal water flow of the downstream river can bear. In the process of river water flow connection, it will inevitably cause bad flow state, serious erosion damage, and endanger the safety of discharge structures

In the existing energy dissipation and anti-scour design of many water conservancy projects at home and abroad, the tail water activity is relatively large, and the atomization is large, which affects the operation of the power station. At the same time, the cavitation and cavitation phenomena in the high-speed flood movement will also have an adverse impact on the dam body

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