Stack type low noise sea chest

Abstract

The invention aims to provide a stack type low noise sea chest, which includes an air vent, a seawater header pipe suction port, a horizontal pored isolation board, a stack type baffle, a chest separation board, a trapezoid upper cover, a rotary chest cavity port, a rotary flange, a detachable inward concave grid sheet, an outer shell plate and struts, wherein the detachable inward concave grid sheet is connected with the rotary chest cavity port through a hinge pin; the chest separation board is welded onto an inner bottom plate; the stack type baffle and the chest separation board are connected together through the four struts; the horizontal pored isolation board is mounted at the 1 / 2 height of the sea chest; gas-liquid separation holes are arranged in the horizontal pored isolation board in rows; the inclination angle of the trapezoid upper cover is 45 degrees, so that the air vent is enabled to be higher than the sea level; the rotary chest body cavity port is connected with the outer shell plate through the rotary flange. According to the invention, the stack type cavity port structure is adopted for the cavity port of the sea chest, so that the current oscillation of seawater is reduced and further the underwater radiation noise of ships can be lowered.

Description

technical field [0001] The invention relates to the field of underwater vibration radiation noise control of ships and marine engineering structures, in particular to a chimney-type low-noise seabed valve box. Background technique [0002] The submarine valve box is mainly used to provide cooling water, fire-fighting water, ballast water, and flushing water for the main and auxiliary diesel engines of the ship, which is directly related to the normal operation of the ship, ballast navigation, fire-fighting, etc. Safety. At present, with the continuous improvement of the acoustic stealth, cabin noise and reliability requirements of the ship, in order to ensure the safety of the ship and complete the work for a long time, the design of a new low-noise submarine valve box structure is very necessary. [0003] At present, the seabed valve box used by various ships is used as the seawater suction valve space arranged on the bottom of the ship for the seawater suction of the main...

AI Technical Summary

Problems solved by technology

Since the submarine valve box structure is close to the outer plate structure and is directly connected to the external flow field, there is no structural impedance in the sound wave propagation process, and the radiated sound waves will directly radiate into the external flow field, reducing the acoustic stealth performance of the ship

[0005] The unfavorable fluid-solid coupling effect caused by the vortex will cause the cavity to vibrate and cause fatigue damage

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