Water turbine with runner blades in sawtooth shape

Abstract

A water turbine with runner blades in a sawtooth shape comprises a support body (1) and a runner (3) which is installed on the support body and can rotate around a center shaft (2). The blades (4) of the runner are sawtooth-shaped blades with the cross section being triangular. The water turbine with the runner blades in the sawtooth shape is simple in structure, convenient to maintain, low in manufacturing difficulty, low in manufacturing cost and high in working efficiency, and the situation that impurities are wound on the water turbine can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of hydraulic turbine structures. Background technique [0002] The blades of the existing hydraulic turbine runners are generally sheet-shaped blades with a certain streamline radian, which require high design and manufacturing techniques, are difficult to manufacture, and have relatively high manufacturing costs. Traditional mixed-flow, axial-flow, oblique and other types of water turbines, because their blades are all suspended and fixed, their rotation direction has a certain angle with the water flow or even perpendicular to the water flow direction, and the turbine blades and the flow guide The leaves are often entangled and blocked by various garbage such as ropes, packaging bags, fishing nets, branches, leaves, etc. floating in the water. Running time increases operating costs and affects power generation efficiency. In order to block all kinds of garbage in the water, all traditional hydropower sta...

AI Technical Summary

Problems solved by technology

[0002] The blades of existing water turbine runners are generally sheet-shaped blades with a certain streamline radian. The design and manufacturing process requirements are high, the manufacturing is difficult, and the manufacturing cost is also high.

Traditional mixed-flow, axial-flow, oblique and other types of water turbines, because their blades are all suspended and fixed, their rotation direction has a certain angle with the water flow or even perpendicular to the water flow direction, and the turbine blades and the flow guide The leaves are often entangled and blocked by various garbage such as ropes, packaging bags, fishing nets, branches, leaves, etc. floating in the water. Running time increases operating costs and affects power generation efficiency

In order to block all kinds of garbage in the water, all traditional hydropower stations have to install high-density anti-pollution grids, and this kind of high-density anti-pollution grids will block all kinds of garbage at any time. Reduce the flow of water and reduce the power generation capacity, so it must be cleaned up at a high frequency, which greatly increases the work intensity of the staff and also affects the power generation efficiency of the hydropower station

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