Resonance icebreaking ship bow structure

A resonant structure and ship bow technology, which is applied in the field of resonant ice-breaking ship bow structure, can solve the problems of dependence on ice-breaking ability, poor ice-breaking ability, and high wear rate of ice-breaking blades, and achieves remarkable ice-breaking effect, improved ice-breaking ability, and simple structure. Effect

Inactive Publication Date: 2018-10-09
HARBIN ENG UNIV
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Problems solved by technology

[0003] However, traditional icebreakers in polar regions mostly rely on gravity to break ice, and have problems such as poor icebreaking ability and heavy dependence on displacement and main engine power.
Aiming at this problem, the public number is CN104527919A, which discloses a novel icebreaker bow and icebreaking method, which utilizes an inclined backward bow line shape, and an inclined icebreaking blade is arranged above the bow. The ice-breaking force in the direction is more conducive to the breaking of the thin ice layer; but for the thicker ice layer in the polar region, the ice-breaking blade wear rate of the invention is high and the ice-breaking ability is poor

Method used

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] combine Figure 1 to Figure 3b , the present invention is composed of three parts: an external shell, a wave-shaped resonance structure and a rigidity-reinforced structure. The contact area is designed as a concave-convex wave-shaped structure to provide exciting force for ice breaking, the propeller provides driving force, and the rigidity strengthening structure is installed inside the ice breaking contact area.

[0016] Calculate the natural frequency ω of ice ni : According to the ice thickness, density and other parameters of the icebreaker navigation area, use the finite element software to establish the finite element model of the ice in the navigation area, and calculate the natural frequency ω of the ice according to this model ni , the ice-breaking contact zone frequency ω n Coupled with the frequency f of the wave...

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Abstract

The invention provides a resonance icebreaking ship bow structure. A wavy resonance structure is arranged on the outer surface of a ship bow shell, and a stiffening structure is arranged in the ship bow shell. The section of the wavy resonance structure is in a concave-convex shape, and the wavy resonance structure forms an icebreaking contact area. The coupling frequency of the icebreaking contact area frequency omega n and the wavy resonance structure frequency f is equal to the inherent frequency omega ni of ice. The resonance icebreaking ship bow structure has the advantages of being simple in structure, low in energy consumption, high in environmental adaptability, high in survival ability, remarkable in icebreaking effect and the like.

Description

technical field [0001] The invention relates to a bow structure of a resonant ice-breaking ship, and the technical basis and application scope belong to the structural form related to the ship. Background technique [0002] With the development and utilization of oil and gas resources in mid- and high-latitude seas, equipment transportation, resource return, base construction in cold regions, rescue, and material supplies are required. Therefore, in order to ensure smooth navigation in ice seas, icebreakers have become an indispensable tool. [0003] However, traditional polar icebreakers mostly rely on gravity to break ice, and there are problems such as poor icebreaking ability and heavy dependence on displacement and main engine power. Aiming at this problem, the public number is CN104527919A, a new type of icebreaker bow and icebreaking method utilizes the inclined backward bow line shape, and an inclined icebreaking blade is set above the bow. The ice-breaking force in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/46B63B35/08
CPCB63B3/46B63B35/083
Inventor 庞福振李玉慧陈海龙韩端锋李海超杜圆单衍贺霍瑞东彭德炜李硕
Owner HARBIN ENG UNIV
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