一、前言 众所周知,由于水环真空泵(简称水环泵)具有结构简单、制造容易、气体等温压缩、泵腔内无金属摩擦、表面摩损很小、工作平稳可靠、抽吸水蒸汽能力强等特点,而在各行业得到了广泛的应用,并具有强大的生命力。但该类泵与其他的粗真获得设备相比效率较低,耗能较高。特别是 I. Preface As we all know, as the water ring vacuum pump (referred to as the water ring pump) has the advantages of simple structure, easy manufacture, gas compression isothermal, no metal friction in the pump chamber, the surface wear is small, stable and reliable work, pumping water vapor strong Features, but has been widely used in various industries, and has strong vitality. However, such pumps are less efficient and consume more energy than other coarse-grained equipment. especially