A channel vortex power generation and sand removal device and power generation method

Abstract

The invention relates to the field of water conservancy and hydropower engineering, in particular to a channel vortex type power generation and sand discharge device and a power generation method. The device comprises a volute, a sand discharge funnel, a generator and a water turbine, one side of the volute is connected with a water inlet channel, and an overflow groove is arranged on one side of the volute tangent to the direction of the water inlet channel. One end of the overflow tank is provided with a water inlet pipe, and the water inlet pipe connects the overflow tank and the chamber where the water turbine is located. The sand discharge funnel is fixedly installed at the bottom of the volute, the upper end of the sand discharge funnel is provided with a steady flow cylinder, the generator is fixedly installed on the steady flow cylinder, and the water turbine is installed at the lower end of the generator through a transmission shaft. In this power generation method, the silt-laden water flow separates the silt from the water in the volute, the silt flows away from the sand discharge culvert, the clear water flows into the overflow tank, and is transported to the water turbine through the water inlet pipe, and the potential energy of the water is converted into electrical energy. The invention can more conveniently obtain electric energy from rivers with large sand content by improving the structure.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a channel vortex type power generation and sand discharge device and a power generation method. Background technique [0002] Hydroelectric power generation is based on the potential energy difference of water level, and then uses hydroelectric generator to generate electricity. In the process of hydroelectric power generation, there are certain requirements for water quality, and one of the most important indicators for water quality is the sediment content. When rivers with high sediment content are used for hydroelectric power generation, they usually need to be treated before they can be used. Before the sand-laden water enters the generator set in large-scale hydropower stations, in order to meet the water quality requirements, a sand discharge funnel is set up to filter a large amount of sediment. Due to the lack of corresponding supporting faci...

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Problems solved by technology

However, when the device is used in rivers with high sediment content, a large amount of sediment erosion will cause wear to the fan wheel blades of the power generation device, making it difficult to use it stably for a long time

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