A ship heat exchanger with silencing function

Abstract

The invention discloses a ship heat exchanger with a silencing function, and relates to the field of ship heat exchange devices. A shell, a plurality of heat exchange pipes, a center pipe and a plurality of partition plates are included. Pipe plates are arranged at the two ends of the shell. Pipe boxes are arranged on the outer sides of the pipe plates, and the two pipe boxes are provided with a pipe side inlet and a pipe side outlet correspondingly. A baffle plate is arranged in the shell, and the side walls of the two ends of the shell are provided with a shell side inlet and a shell side outlet. The heat exchange pipes are distributed on the baffle plate in a penetrating manner, and the two ends of the heat exchange pipes communicate with the two pipe boxes correspondingly. The center pipe penetrates through the baffle plate and is fixedly connected with the baffle plate, and a plurality of outer silencing holes are formed in the pipe wall of the center pipe at intervals. The partition plates are arranged in the center pipe at intervals and provided with a plurality of inner silencing holes. By means of the ship heat exchanger, efficient heat exchange between fluid in the heat exchanger can be achieved, flow noise and pressure pulsation of part of shell side fluid can be eliminated, the structure is simple, cost is low, and practicability is high.

Description

technical field [0001] The invention relates to the field of ship heat exchange devices, in particular to a ship heat exchanger with a noise reduction function. Background technique [0002] The pressure pulsation and flow noise of the fluid in the heat exchange system are one of the important sources of ship noise and one of the key factors affecting the quietness and reliability of the ship. The actual operation experience shows that the pressure pulsation and flow noise of the fluid in the heat exchange system will mainly cause the following three problems: [0003] (1) The flow noise of the fluid directly radiates outward through the nozzle, or the pressure pulsation of the fluid passes through the excitation pipeline system, causing structural vibration noise to radiate outward, seriously affecting the quietness of the ship; [0004] (2) The flow noise of the heat exchange system and the pipeline vibration noise caused by the fluid pressure pulsation radiate to the cab...

AI Technical Summary

Problems solved by technology

[0003] (1) The flow noise of the fluid directly radiates outward through the nozzle, or the pressure pulsation of the fluid passes through the excitation pipeline system, causing structural vibration noise to radiate outward, seriously affecting the quietness of the ship;

[0004] (2) The flow noise of the heat exchange system and the pipeline vibration noise caused by the fluid pressure pulsation radiate to the cabin of the ship, causing the air noise in the cabin to exceed the standard and seriously affecting the living environment of the staff in the ship;

[0005] (3) The pressure pulsation of the fluid will excite the stress pulsation and structural vibration of the pipeline wall, affect the working quality and working accuracy of the components in the system, and reduce its reliability, especially when the pulsation frequency is close to the natural frequency of the pipeline system, It will cause resonance in the piping system and cause serious consequences

However, the effect of laying sound-absorbing materials outside the heat exchange equipment or piping system is very limited, and the installation of mufflers in the piping system mainly has the following two problems:

[0007] (1) The installation of the muffler in the pipeline system will occupy a large amount of cabin space, which will bring difficulties to the layout and installation of the entire heat exchange system;

[0008] (2) Installing a muffler in the pipeline system will greatly increase the flow resistance of the heat exchange system. On the one hand, it will affect the high-efficiency and low-resistance heat exchange of the system. On the other hand, the heat exchange system needs to be equipped with a circulating pump with higher power and higher lift. This in turn increases the vibration and noise of the heat exchange system

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