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An asymmetric stern structure of a ship

An asymmetric and stern technology, applied in the direction of hull parts, hull, ship construction, etc., can solve the problems of high resistance and high energy consumption

Inactive Publication Date: 2018-12-18
JIANGSU NEW HANTONG SHIP HEAVY IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an asymmetric stern structure of a ship to solve the problems of large resistance and high energy consumption caused by the symmetrical design of the stern of the existing ship

Method used

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  • An asymmetric stern structure of a ship
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Embodiment Construction

[0017] Such as Figure 1-2 As shown, an asymmetric stern structure of a ship includes a hull 1, a stern 2 is provided at the bottom of the hull 1, the longitudinal section of the stern 2 is dagger-shaped, and the longitudinal centerline 3 of the stern 2 faces the side of the hull 1 Offset, the stern 2 includes a hub steel casting 4, and the hub casting 4 includes an integrally formed first part 41 and a second part 42, the first part 41 and the second part 42 are U-shaped in cross section and opposite in direction , the longitudinal section of the first part 41 is rectangular and radial at both ends, the width of the longitudinal section of the second part 42 first increases and then decreases along the direction of the longitudinal centerline 3, the middle part of the hub casting 4 is provided with a propeller stern shaft 5, and the propeller stern shaft 5 Located on the longitudinal centerline of the hull 1, the front end of the propeller stern shaft 5 is provided with a ste...

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Abstract

An asymmetrical stern structure of a ship includes the hull, A stern is arranged at the bottom of the hull, A longitudinal section of that stern of the ship is in the shape of a dagger, the longitudinal centerline of the stern of the ship is shifted toward one side of the hull, the stern of the ship comprises a hub cast steel piece, the hub steel casting includes an integrally formed first portionand a second portion, A lateral cross-section of that first portion and the second portion are U-shape and opposite in direction, A longitudinal section of that first portion is rectangular and radiated at both ends; At first, that width of the longitudinal section of the second part increase and then decreases along the longitudinal cent line, A tail shaft of a propeller is arrange in that middle of the shaft hub cast steel part, the tail shaft of the propeller is positioned on the longitudinal centerline of the hull, and the front end of the tail shaft of the propeller is provide with a stern tube front support. The invention has the advantages of simple structure, reducing ship resistance, improving propulsion efficiency, reducing oil consumption and saving energy.

Description

technical field [0001] The invention belongs to the technical field of ships, and in particular relates to an asymmetric stern structure of a ship. Background technique [0002] At present, the stern of the ship is designed symmetrically, and a single machine and a single propeller are installed. When the ship is sailing, the propeller rotates in one direction, and the direction of the propeller water flow on the central axis of the hull becomes asymmetrical, so the propeller is not ideal. In the water flow, the velocity field of the water flow entering the propeller is not uniform. At the symmetry plane above the propeller, the water flow decelerates obviously, and the tangential component of the velocity appears on both sides of this plane. This phenomenon reduces the efficiency of the propeller and increases the energy efficiency. consumption. [0003] Patent a ship with asymmetric stern (publication number CN207403878U), which discloses a ship with asymmetric stern. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/40
CPCB63B3/40
Inventor 孟成君刘国庆孟坚
Owner JIANGSU NEW HANTONG SHIP HEAVY IND
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