Submersible power generator

Abstract

[Problem] To provide a submersible power generator which can be moored stably underwater and which can achieve a high startup voltage without being enlarged. [Solution] A submersible power generator is provided with: an inner / outer dual-rotary armature power-generating mechanism having an outer rotary armature and an inner rotary armature that faces the outer rotary armature and rotates in the opposite direction from the outer rotary armature; and a set of propellers arranged with coinciding axes, the torsional direction of the blades relative to the extending direction of the axes being opposite of each other. One propeller in the set of propellers is linked to one rotary armature among the inner and outer rotary armatures, the other propeller is linked to the other rotary armature, a casing is provided for sealing the inner / outer dual-rotary armature power-generating mechanism off from the external environment, the submersible power generator operates in water currents while submerged, and the buoyancy force (F) acting on the submersible power generator during operation is greater than the gravitational force (W) acting on the submersible power generator (when the generator is moored using mooring lines, F > W + the gravitational force acting on the mooring lines - the buoyancy force acting on the mooring lines).

Description

technical field [0001] The present invention relates to submersible generators. Background technique [0002] Patent Document 1 discloses a submersible generator equipped with relatively rotating inner and outer armatures, a propeller that drives the inner and outer armatures to rotate relatively, and a housing for accommodating the armatures. The power generation mechanism of the armature and the inner fixed armature rotates in opposite directions, drives the front and rear two-stage outer rotating armatures to rotate the front and rear two-stage propellers in opposite directions, and drives the front and rear two-stage inner fixed motors to rotate in opposite directions. The shell, which is hermetically accommodated by the pivot relative to the external environment, works in the water flow in a submerged state, and the buoyancy force acting on the submersible generator is greater than the gravity acting on the submersible generator. [0003] Patent Document 1: Japanese Pa...

AI Technical Summary

Problems solved by technology

Therefore, in the above-mentioned submersible generator in which the groups of opposing outer rotating armatures and inner fixed armatures are independently arranged, in order to obtain a high starting voltage, it is necessary to install a speed increasing gear or a pulley mechanism to increase the rotation of the propeller. After the speed is transmitted to the outer rotating armature, it leads to the enlargement of the generator

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