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一、概述放空噪声是气流喷注噪声,这是一种最常遇到的噪声。对于化工企业来说,这种噪声尤为严重。在化工厂中,由于开车、停车和紧急事故处理的需要,常在设备上或管道系统中设置放空装置。按照操作的特征和要求,作有限制的或无限制的放空,作间歇的或连续的放空。当工艺气体,压缩空气和蒸汽通过排放口向大气排放时,会产生很大的噪声。根据放空噪声产生的原理可知,气体的放空类似高速气体从喷口中喷出,产生射流噪声。如果放空管
I. Overview The bleed noise is the air jet noise, which is one of the most commonly encountered noise. This noise is especially severe for chemical companies. In chemical plants, venting devices are often provided on the equipment or in the piping system due to the need for driving, parking and emergency handling. Depending on the characteristics and requirements of the operation, venting is limited or unlimited with intermittent or continuous venting. When process gases, compressed air and steam are vented to the atmosphere through vents, loud noise is generated. According to the principle of blow-by noise, it can be known that the blow-out of gas is similar to the high-speed gas that is ejected from the nozzle to generate jet noise. If venting tube