Umbrella-type efficient excitating middle-through oblique impact type hydrogenerator and work doing method thereof

Abstract

The invention discloses an umbrella-type efficient excitating middle-through oblique impact type hydrogenerator and a work doing method thereof. The umbrella-type efficient excitating middle-through oblique impact type hydrogenerator comprises a power generation mechanism, an excitating mechanism, an oblique impact impeller mechanism and a rotary shaft mechanism, wherein the oblique impact impeller mechanism comprises oblique impact blades, an annular rotary hood and an annular fixed hood; the oblique impact blades are annularly distributed inside the annular rotary hood; the annular rotary hood and the annular fixed hood are connected through a sealing bearing to form a closed annular cavity; the power generation mechanism and the excitating mechanism are coaxially mounted in the annular cavity in parallel up and down, and the annular fixed hood is fixedly mounted on a supporting tubular column. The umbrella-type efficient excitating middle-through oblique impact type hydrogenerator disclosed by the invention is long in service life, relatively low in construction cost and production management cost, relatively good in universality and high in kinetic energy conversion efficiency.

Description

technical field [0001] The invention relates to the field of hydropower equipment, in particular to an umbrella-type high-efficiency excitation center-pass oblique strike type hydro-generator and a work-acting 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 ...

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Problems solved by technology

[0008] 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 efficiency of the existing oblique impact turbine is only 80% to 84% %, generally low; 4) The existing hydro-generators are all customized machines for different terrains, and there are large differences in volume, which cannot be mass-produced; 5) The stator, rotor, salient pole, Components such as drive shafts have high requirements on material strength; 6) The excitation efficiency of the excitation winding is low

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