Low-noise sea chest

Abstract

The invention aims at providing a low-noise sea chest. The low-noise sea chest comprises a cavity, an inclined upper cover, an isolating board and a rotary chest body chamber port, wherein the cavity is connected with the inclined upper cover; an inner base plate is arranged at the lower bottom of the cavity and is connected with the rotary chest body chamber port; a concave grid sheet is arranged in the rotary chest body chamber port; the isolating board comprises a longitudinal isolating board and a vertical cavity port isolating board, and the longitudinal isolating board and the vertical cavity port isolating board are fixedly arranged on the inner base plate; rows of gas-liquid separating holes are formed in the isolating board; cross sections of the gas-liquid separating holes on the vertical cavity isolating board are perpendicular to the water current direction; a ventilation port is formed in the upper end of the cavity; a seawater header pipe suction port is formed in the side end of the cavity; and the height of the ventilation port is greater than the sea level. The low-noise sea chest disclosed by the invention has the advantages of simple structure, favorable economy, strong practicability and complete application function.

Description

technical field [0001] The invention relates to a submarine valve box in the field of vibration, radiation and noise control. Background technique [0002] The subsea valve box is usually located at the bottom of the bow, midship and stern, and is a box with a size of about 1 meter square that contains water inside. It mainly provides cooling water, fire-fighting water, compression water, and flushing water for the main and auxiliary diesel engines of the ship. It is one of the main lifeblood of the ship, which is directly related to the normal operation of the ship, the normal life of the crew and passengers, as well as the safety of the ship and people. At present, with the improvement of underwater acoustic detection equipment, the noise and reliability requirements of ships are also constantly improving. In order to ensure the long-term and normal operation of ships, the design of low-noise submarine valve box structure is very necessary. [0003] The subsea valve box ...

AI Technical Summary

Problems solved by technology

When this type of submarine valve box is rolling, the free liquid surface of the seawater in the box sloshes seriously, and the shear layer of the fluid leading edge produces vortices and current-induced oscillations, which are unfavorable to the stability and acoustic stealth of the ship.

The fixed cavity cannot change the angle of attack of the incoming flow in time with the change of the ship's course, resulting in serious fluid separation

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