A kind of resonant and sound-absorbing shipboard channel

Abstract

The invention discloses an inter-board flow channel for resonance noise elimination, which comprises a flow channel body, wherein the flow channel body comprises a water inlet pipe and a water outletpipe, which are L-shaped; the flow channel body is provided with a pipe and a plurality of resonance chambers, and the plurality of resonance chambers are arranged side by side in the flow channel body in turn; The pipe is L-shaped, comprises an outer expanding inlet pipe, an intermediate pipe and an outlet pipe, which are connected in turn, and pass through each resonant cavity in turn. An inletis arranged on the inlet pipe, an outlet of the outlet pipe passes through the side wall of the outlet pipe, water flows into the outer expanding inlet pipe through the inlet and out through the outlet of the outlet pipe through the intermediate pipe, and at least one opening is arranged on the side wall of the intermediate pipe and the outlet pipe. The pipeline has uniform transition and no sudden change, small flow resistance and excellent hydraulic performance; At low frequency, that transmission loss is large, so the noise can be effectively eliminated or attenuate; The resonant cavity islarge in volume, and it is easy to adjust the resonant frequency to eliminate the specific frequency noise. Flow resistance is small, can maintain a certain degree of erosion, to prevent the opening in the pipeline is blocked.

Description

Technical field [0001] The invention relates to the technical field of ship power devices, in particular to a resonance silencing interboard flow channel. Background technique [0002] The interboard flow channel is the channel through which the outboard cooling water enters the hull. The outboard cooling water flows through the specially designed interboard flow channel, the side valve and the pump, and then enters the cooling system to take away the heat of each user and provide cooling for the entire ship; Therefore, the design optimization of the interboard flow channel is beneficial to reduce the configuration of the pump and the external radiated noise of the system, and has a positive significance for improving the survivability of the ship. [0003] However, there are still unreasonable points in the current structural design of the shipboard runners, and the following defects: [0004] (1) Bring high noise and affect the environment of the workplace; [0005] (2) The impact ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing inboard channel has relatively large noise and serious loss of water flow energy

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