Propeller device of dual-conduit nacelle

Abstract

The invention relates to a propeller device of a dual-conduit nacelle, which belongs to the technical field of ship propulsion and comprises a main driving mechanism, two propeller revolving mechanisms and a nacelle revolving mechanism, wherein the main driving mechanism is respectively connected with the two propeller revolving mechanisms and fixedly arranged inside the nacelle revolving mechanism. The propeller device achieves longitudinal thrust by regulating the thrust direction of propellers, thereby being capable of resisting or generating a force to heave a platform (or a ship); and meanwhile, the revolving directions of the two propellers are set to be contrarotating, thereby effectively reducing the influence when the propellers are in trailing vortex.

Description

technical field [0001] The invention relates to a propulsion device in the technical field of marine engineering, in particular to a double-duct pod propulsion device. Background technique [0002] The dynamic positioning propulsion device of the semi-submersible platform is the actuator of the deep-sea dynamic positioning propulsion system, which receives the thrust command issued by the control system to generate thrust. The deep-sea dynamic positioning propulsion system generally adopts the azimuth thruster, and its main feature is that it can realize 360° all-round propulsion. At present, most of the dynamic positioning propulsion devices for semi-submersible platforms at home and abroad are single-tube propeller propulsion devices. This device has certain defects in application, such as being unable to control the heave and heave of the platform (or ship). Forces of sinking motion, propeller wake rotation, etc. [0003] After searching the existing technology, it was ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the above-mentioned deficiencies existing in the prior art, and provides a double-duct pod propulsion device. The servo motor is placed in the pod outside the floating body, which solves the problem that the platform floating body is not well sealed. At the same time, because the pod is immersed in the In the water, the heat dissipation area is increased to make the heat dissipation effect better; the double propellers are arranged on both sides of the pod, and the thrust direction of the propellers is adjusted to realize the thrust of 360 degrees in the transverse direction and 360 degrees in the longitudinal direction, so as to resist or generate the platform ( or ship) heave or heave force; at the same time set the rotation direction of the two propellers to counter-rotation, effectively reducing the influence of the propeller wake vortex

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