Horizontal type middle-hollow forwardly-mounted movable-blade axial-flow type hydro-generator and work doing method thereof

Abstract

The invention discloses a horizontal type middle-hollow forwardly-mounted movable-blade axial-flow type hydro-generator and a work doing method thereof. The horizontal type middle-hollow forwardly-mounted movable-blade axial-flow type hydro-generator comprises a power generation mechanism, an excitation mechanism, a rotating wheel mechanism, a draft tube, a water guide mechanism and a rotating wheel chamber, wherein the rotating wheel mechanism comprises rotating blades, a rotary inner cover and a fixed outer cover; the rotating blades are arranged on the inner side of the rotary inner cover in a fanshape; the rotary inner cover is connected with the fixed outer cover through a sealed bearing to form aclosed annular cavity; the power generation mechanism and the excitation mechanism are coaxially mounted in the annular cavity in a vertically parallel manner; and the water guide mechanism, the rotating wheel chamber and the draft tube form a water flow closed channel. The horizontal type middle-hollow front-mounted movable-blade axial-flow type hydro-generator is long in service life, low in construction cost and production management cost, and high in water power conversion efficiency.

Description

technical field [0001] The invention relates to the field of hydropower equipment, in particular to a horizontal center-pass positively installed rotary paddle axial-flow hydroelectric generator and a work 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 requ...

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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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