A dual reverse propeller device (100) for a ship is provided with an outer shaft (12), an inner shaft (14), and a drive device (30). A front propeller (1) is attached to the rear end of the outer shaft, and the outer shaft is rotatably supported by a stern tube bearing (16). A rear propeller (2) is attached to the rear end of the inner shaft, and the inner shaft is rotatably supported by double counter-rotating bearings (5, 7). A stern-side stern tube sealing part (40) is provided on the sea side of the stern tube bearing (16) and seals the stern tube bearing (16) and the stern tube bearing (16). The stern-side double-reversing seal part (50) is provided on the sea side of the stern-side double-reversing bearing (7) and seals the stern-side double-reversing bearing (7). A seal drain recovery device (60) supplies seal air (A) to a stern-side stern pipe seal part or a stern-side double reverse seal part, and recovers drain liquids (D1, D2) together with the seal air. A rotation position sensor (70) that detects the rotation position of the outer shaft or the inner shaft, and a rotation control device (80) that stops the drive device on the basis of a detection signal from the rotation position sensor are also provided.

    船舶用双重反转螺旋桨装置(100)具备外轴(12)、内轴(14)、驱动装置(30)。外轴在后端部安装着前螺旋桨(1),能够旋转地被船尾管轴承(16)支承。内轴在后端部安装着后螺旋桨(2),能够旋转地被双重反转轴承(5、7)支承。船尾侧船尾管密封部(40)设置在船尾管轴承(16)的海侧,将它们之间密封。船尾侧双重反转密封部(50)设置在船尾侧双重反转轴承(7)的海侧,将它们之间密封。密封排液回收装置(60)将密封空气(A)供给到船尾侧船尾管密封部或船尾侧双重反转密封部,将排液(D1、D2)与密封空气一起回收。还具备检测外轴或内轴的旋转位置的旋转位置传感器(70)和根据旋转位置传感器的检测信号使驱动装置停止的旋转控制装置(80)。


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    Title :

    Dual reverse propeller device for ship and ship provided with same


    Additional title:

    船舶用双重反转螺旋桨装置和具备它的船舶


    Contributors:

    Publication date :

    2023-10-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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