Vertical through flush helical axial flow-type hydrogenerator and working method thereof

Abstract

The invention discloses a vertical through flush helical axial flow-type hydrogenerator and a working method thereof. The vertical through flush helical axial flow-type hydrogenerator comprises a power generation mechanism, an excitation mechanism, a runner mechanism, an exhaust water pipe, a water guide mechanism and a runner chamber, wherein the runner mechanism comprises helical fins, a rotary upper cover and a fixed lower cover; the helical fins are helically distributed on the inner side of the rotary upper cover; the rotary upper cover and the fixed lower cover are connected through a seal bearing to form an enclosed annular cavity; the excitation mechanism and the power generation mechanism are internally and externally arranged in the annular cavity coaxially in parallel; and the water guide mechanism, the runner chamber and the exhaust water pipe form a flow blocking channel. The vertical through flush helical axial flow-type hydrogenerator is long in lifetime; the construction cost and the production management cost are relatively low; and the water energy conversion efficiency is high.

Description

technical field [0001] The invention relates to the field of hydropower equipment, in particular to a vertical mid-pass flat-mounted spiral axial-flow hydroelectric generator and a power-working method thereof. Background technique [0002] According to the working principle, hydroelectric power generation devices can be divided into two categories: impact turbines and impact turbines. The runner of the impact turbine is impacted by the water flow and rotates, and the pressure of the water flow remains unchanged during the working process, mainly due to the conversion of kinetic energy; the runner of the impact turbine is rotated by the reaction force of the water flow, and the pressure of the water flow during the working process Both energy and kinetic energy are changed, but mainly the conversion of pressure energy. [0003] Pelton turbines, because only part of the working wheels pass through the water, and part of the water bucket is under force, so the required flow o...

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Problems solved by technology

[0006] The technical problems to be solved by the present invention are as follows: 1) The transmission shaft and bearing in the existing hydroelectric power generation device have relatively large losses due to the large force and high temperature generated by friction; 2) the generator of the existing hydroelectric power generation device Exciters and exciters will generate a lot of waste heat during work, and a special cooling system needs to be installed, and the cooling effect of the cooling system is not good, and it is easy to burn the core; 3) The high stable efficiency of the existing water turbine is only about 90%; 4) The existing hydro-generators are all customized machines for different terrains, and there are large differences in volume, which cannot be mass-produced; High strength requirements

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