Multi-chamber dynamic adjustment combined sealing device for podded propulsor

Abstract

The invention belongs to the technical field of ships, and particularly relates to a multi-chamber dynamic adjustment combined sealing device for a podded propulsor. The device comprises an end face sealing component, a packing and a framework sealing element, wherein the end face sealing component comprises an end face sealing component fixed ring, an end face sealing component movable ring and an end face sealing tension ring; when the podded propulsor is used, the end face sealing component fixed ring and the end face sealing component movable ring rotate relatively at a high speed to forma water film, thereby achieving an end face sealing effect; the packing belongs to coarse sealing and can prevent large particles from entering the end face sealing component and damaging a sealing combination face; a grease injection hole is formed beside the framework sealing piece, a working condition of framework sealing is effectively improved, and the service life of the framework oil seal is prolonged. According to the sealing device for the podded propulsor, sealing is conducted in the mode that the packing, the end face sealing component and the framework sealing piece lubricated through grease injection are combined, so that the sealing device meets the requirements for different draught depths, particularly the requirement for deep draught of the podded propulsor, and the service life of the sealing device for the podded propulsor is greatly prolonged.

Description

Technical field [0001] The invention belongs to the technical field of ships, and particularly relates to a multi-chamber dynamic adjustment combined sealing device for a pod propeller. Background technique [0002] The traditional propeller sealing device is composed of 3 to 4 lip-shaped skeleton seals or cloth seals, lacking lubricating medium, the allowable amount of eccentricity of the skeleton oil seal is small, the material wear resistance is poor, and the seal life is short; The pod propeller generally has a deep draft, and the sealing ring is easily deformed in deep water, and the sealing performance is reduced, so it cannot be used in the pod propeller. The traditional propeller sealing device does not have leakage monitoring and drainage functions. Once a slight leak occurs, a large amount of water will accumulate in the pod over time. A large amount of water in the pod propeller will directly cause the propeller to fail and the ship loses power , Causing serious safet...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a multi-chamber dynamic adjustment combined sealing device for a pod propeller, aiming at solving the problem of small allowable eccentricity, poor material wear resistance, short seal life, reduced sealing performance and no oil seals in the skeleton oil seal of the traditional propeller sealing device in the above-mentioned background technology. Problems with leakage monitoring and drain function

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