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最近,GB782-79《固定的往复活塞式空气压缩机基本参数》和JB2589-79《容积式压缩机型号编制方法》,正式颁发实施并公开发行了。本文就上述标准中规定的“公称排气压力”这一基本参数作一剖析。 空压机的排气压力,按设计服从使用要求的原则而言,为得知一般用固定的往复活塞式空气压缩机的排气压力,首先应考察一下使用单位对压缩空气压力的要求。由于空气压缩机的排气压力送到使用地点时,有一个压力降（损失）ΔP,此值的大小随使用单位不同而千变万化。设压缩空气在使用地点的工作压力（P’）一定时,则空气压缩机的排气压力（P）可表为:
Recently, GB782-79 “fixed reciprocating piston air compressor basic parameters” and JB2589-79 “volumetric compressor model preparation method”, was officially issued and implemented. In this paper, the standard set forth in the “nominal exhaust pressure” to make a basic analysis of the basic parameters. Air compressor exhaust pressure, according to the design to comply with the requirements of the principle of use, in order to know the general fixed reciprocating piston air compressor exhaust pressure, we should first examine the use of compressed air pressure units. As the air compressor discharge pressure to the point of use, there is a pressure drop (loss) ΔP, the value of the size varies with the use of units. Suppose the working pressure (P ’) of the compressed air at the place of use is constant, then the discharge pressure (P) of the air compressor can be expressed as: