Resistive and reactive composite silencing tower

Abstract

The invention discloses a resistive and reactive composite silencing tower. The resistive and reactive composite silencing tower comprises a first silencing device and a second silencing device. The first silencing device comprises a diffusion pipe, an inlet is formed in one end of the diffusion pipe, an end socket is arranged at the other end of the diffusion pipe, and multiple small through holes are formed in the side wall of the diffusion pipe. The second silencing device comprises a body shell of the silencing tower and one or more sets of silencing structures contained in the body shell, the body shell of the silencing tower is provided with a containing cavity and an opening communicating with the containing cavity, and the end, provided with the end socket, of the diffusion pipe is contained in the containing cavity from the opening. Each silencing structure comprises a resistive silencing assembly and a reactive silencing assembly, each resistive silencing assembly comprises multiple silencing pieces which are distributed in parallel at intervals, and the silencing pieces are arranged in the direction of the central axis of the body shell of the silencing tower. The silencing tower can achieve the aim of increasing the silencing amount by adding the silencing structures at will according to the requirement of a user for the silencing amount.

Description

technical field [0001] The invention relates to the field of muffler devices, in particular to an impedance compound muffler tower with the function of separating oil and gas. Background technique [0002] The muffler tower is a noise reduction device installed in the exhaust system of the engine exhaust (such as the engine test platform). Anechoic towers are an effective tool for noise control by allowing airflow to pass while blocking the propagation of sound waves. The two basic noise reduction principles of the anechoic tower are: ① the diffusion cavity can reduce the peak noise in a more concentrated frequency band; ② the sound-absorbing material provides a balanced noise reduction effect in a wider frequency range. However, the noise reduction effect of the existing anechoic tower is not enough, and the noise reduction structure is not flexible enough, and cannot be appropriately increased or decreased according to the needs of users. [0003] Therefore, it is urgent...

AI Technical Summary

Problems solved by technology

However, the noise reduction effect of the existing anechoic tower is not enough, and the noise reduction structure is not flexible enough, and it cannot be appropriately increased or decreased according to the needs of users.

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