Noise reduction device of ship engine

Abstract

The invention relates to the technical field of ships, in particular to a noise reduction device of a ship engine, which comprises a shell and an air inlet pipe, wherein one end of the air inlet pipe is connected with a generator, and the other end of the air inlet pipe is communicated to the inner side of the shell; a protective cover arranged on the outer side of the air inlet pipe and fixedly connected with the shell, wherein sound absorption cotton is fixedly connected to the inner side of the shell and the inner side of the protective cover; an air inlet mechanism arranged on the inner side of the shell and fixedly connected with the air inlet pipe; a speed reduction mechanism arranged on the inner side of the air inlet pipe, wherein the speed reduction mechanism comprises a shielding assembly; and a buffering assembly. According to the invention, the shell and the protective cover are arranged, noise is absorbed through sound absorption cotton, the speed of air entering the generator is reduced through the speed reduction mechanism, noise is reduced, and therefore the noise is effectively treated, quietness in the ship is guaranteed, and people can have a rest conveniently.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a noise reduction device for a ship engine. Background technique [0002] Ship, the general term for all kinds of ships. Ships are means of transportation that can sail or berth in waters for transportation or operations, and have different technical performances, equipment and structural types according to different requirements for use. A ship is a man-made means of transportation that primarily operates in geographical waters. [0003] The engine of a ship is a machine that can convert other forms of energy into mechanical energy. The engine is not only suitable for power generation devices, but also refers to the entire machine including power devices. The intake noise is one of the main aerodynamic noise sources of the engine. The intake noise is caused by the pressure fluctuations caused by the periodic opening and closing of the intake valve. The existing ship engines cann...

AI Technical Summary

Problems solved by technology

The intake noise is one of the main aerodynamic noise sources of the engine. The intake noise is caused by the pressure fluctuations caused by the periodic opening and closing of the intake valve. The existing ship engines cannot effectively absorb the generated noise. , will affect the rest of the people in the ship. Therefore, in view of the above status quo, it is urgent to develop a noise reduction device for ship engines to overcome the shortcomings in current practical applications.

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