Submersible generator

Abstract

To provide a submersible generator which can be moored in the water in a stable manner, and with which a high actuation voltage and high efficiency can be achieved without increasing the size of the generator. A submersible generator equipped with: an outer / inner dual-rotary armature type power generating mechanism, which has an outside rotary armature, and an inside rotary armature facing the outside rotary armature and rotating in the opposite direction from the outside rotary armature; and a set of propellers arranged with coinciding axes, with the direction in which the blades twist, with respect to the direction of extension of the axes, being mutually opposite. One of the propellers in the set is linked to one rotary armature, and the other propeller in the set is linked to the other rotary armature, and a casing is provided for housing the outer / inner dual-rotary armature type power generating mechanism and sealing this mechanism off from the external environment. The submersible power generator operates while submerged in a water current, the gravitational force W acting on the submersible power generator during operation is greater than the buoyancy F acting on the submersible power generator, and when viewed on the meridian plane (the vertical plane containing the rotational axes of the propellers), the center of rotational moment, for which the sum of the gravitational force W and the buoyancy F acting on the submersible generator and the resistance D acting on the submersible generator in the water current is zero, exists on the casing.

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 that is airtightly accommodated by the pivot relative to the external environment is connected to the anchor placed on the bottom of the water via a mooring cable, and is placed in the water flow in a submerged state to work. The buoyancy acting on the submersible generator is greater than that a...

AI Technical Summary

Problems solved by technology

Therefore, in the above-mentioned submersible generator in which the opposite outer rotating armature and inner fixed armature are independently arranged, in order to obtain a high starting voltage or to obtain high electrical efficiency, it is necessary to install a speed increasing gear or The pulley mechanism transmits the rotation speed of the propeller to the outer rotating armature, leading to an increase in the size of the generator

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