Green energy-saving tail icebreaking type three-purpose tugboat

Abstract

The invention provides a green energy-saving tail icebreaking type three-purpose tugboat which comprises a tugboat body and a propeller arranged on the tugboat body, wherein an icebreaking part is arranged on a stern of the tugboat body; the icebreaking part is used for resisting against an ice layer and breaking the ice layer; the propeller can drive the tugboat body to advance towards the stern direction; the propeller is arranged on the stern of the tugboat body; the propeller is arranged as a full-rotating contra-rotating paddle propeller; a bulbous bow is arranged on a prow of the tugboat body. Under the condition of an icing water surface, the propeller can be utilized to drive the tugboat body to advance towards the stern direction and the icebreaking part is utilized to break the icing layer, so that the green energy-saving tail icebreaking type three-purpose tugboat can be used as an icebreaking boat. Under the condition of ice-free water surface, the propeller can be utilized to drive the tugboat body to advance towards the prow direction and the bulbous bow and the contra-rotating paddles all have obvious energy-saving effects and are capable of effectively reducing the energy consumption, so that the green energy-saving tail icebreaking type three-purpose tugboat can be used as a normal tugboat, the usage rate of the green energy-saving tail icebreaking type three-purpose tugboat can be greatly increased and the use cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a green energy-saving stern ice-breaking three-purpose tugboat. Background technique [0002] In recent years, extreme weather has occurred frequently. For example, large areas of the Yellow Sea and Bohai Sea in my country often freeze in winter, and the thickness of the ice layer sometimes reaches 0.4-0.6 meters, which seriously threatens the safety of ordinary cargo ships and offshore platforms. In order to open up and maintain port channels, and to push and break moving ice floes for drilling platforms, it is necessary to build and use three-purpose tugboats with strong icebreaking capabilities. [0003] At present, all common ice-breaking tugboats mainly adopt the traditional scissor-shaped bow ice-breaking and forward vehicle propulsion modes. Its bow is designed to be in the shape of a spoon with a smaller angle between the longitudinal section line and the waterline,...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the inability to use the energy-saving bulbous bow shape, the resistance and energy consumption are relatively large when sailing in ice-free seasons such as spring, summer and autumn; this obvious shortcoming makes the shipowners not very motivated to build ice-breaking tugboats;

[0005] 2. The area under the waterline of the bow is cut off a lot, resulting in difficulty in layout and lack of buoyancy;

[0006] 3. When encountering snow and ice piles, it cannot be effectively broken; that is, the ice-breaking ability is poor;

[0007] 4. The efficiency of forward propulsion ice breaking is poor, the operation method is single, and the power consumption of the main engine is large

[0008] In the existing technology, the scissor-shaped bow with ice-breaking function has a lot of additional energy consumption when sailing in ice-free seasons, and the bulbous bow with good energy-saving effect cannot be used for ice-breaking

[0009] At the same time, due to the above-mentioned four shortcomings of ordinary scissor-shaped bow ice-breaking tugboats, especially the first and second points, the scissor-shaped bow ice-breaking tugboats have poor competitiveness in the three ice-free seasons of spring, summer and autumn, making shipowners unwilling to build ice breaking tug

As a result, there is a shortage of ice-breaking tugboats, and the lack of ice-breaking tugboats required by my country to maintain the safety of the Yellow Sea and the Bohai Sea in winter; at the same time, it cannot meet the needs of my country's shipping and offshore platforms to expand to vast frozen sea areas such as the sea area near the Bering Strait

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