Multi-station engine test bed exhaust device

Abstract

The invention discloses a multi-station engine test bed exhaust device. The device comprises a 1# engine test bed exhaust pipeline, a 2# engine test bed main exhaust pipeline, a 2# engine test bed auxiliary exhaust pipeline, an exhaust pipeline, an exhaust main pipeline, a vertical oil-gas separation device and a silencer, wherein two ends of the vertical oil-gas separation device are respectively communicated with an outlet of a 2# engine test bed main exhaust pipeline and an inlet of an exhaust main pipeline; the 1# engine test bed exhaust pipeline and the 2# engine test bed auxiliary exhaust pipeline are arranged in parallel and are both communicated with an inlet of the exhaust main pipeline; an outlet of the exhaust main pipeline is communicated with the silencer; and the deflation pipeline is communicated with the silencing device. The multi-station engine test bed exhaust device is suitable for the working condition that exhaust pipelines of multiple stations of multiple engine test beds or one engine test bed share the same silencing tower, mutual interference of airflow exhausted by air outlets of multiple variable-frequency diffusers is avoided, secondary noise pollution is avoided, and the multi-station engine test bed exhaust device is suitable for multiple engine test beds or multiple stations of one engine test bed; and silencing difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to an exhaust device for a multi-station engine test bench. Background technique [0002] The noise source that pollutes the working places and the surrounding environment of the engine test bench mainly comes from aerodynamic noise. This noise source only exists during the test run of the test bench. When it flows or discharges into the atmosphere, it produces noise as high as 130dB(A). Noise is a sound that people do not need. The frequency of sound that can be heard by the human ear is within 20HZ to 20000HZ. This is the noise that people can directly feel. The noise outside this frequency is a silent killer that the human ear cannot feel, and it is also the object of noise control. . At present, various countries stipulate that noise should be controlled within different sound pressure levels according to different environments. According to the relevant provisions of ...

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Problems solved by technology

According to the use or structure of the mist eliminator, it can be divided into many types, such as louver type separator, gravity sedimentation type separator and swirl plate separator, but these separators have low separation efficiency and are not easy to separate the mist with smaller particle size Although the wire mesh demister can separate the general mist, it requires the mist to be clean, the air flow velocity is small, and the resistance drop is large, the service life is short, and the equipment investment is large

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