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一、前言液环泵是化工、造纸、纺织、食品等工业广泛采用的湿式真空泵或压缩机,但其主要缺点是效率低。我国三十年来研究液环泵者甚少,现在即使有经验的液环泵设计师亦很少掌握高效率泵之设计原则。我国至今仍广泛选用SZ型液环泵作真空或压缩使用。SZ-4型泵最高效率<33%,实际运转的等温效率<25%。SZ-3型作氯压机使用,其效率<20%。另一缺点是这些液环泵寿命甚短,SZ-4型泵的轴使用期不
I. Introduction The liquid ring pump is a wet vacuum pump or compressor widely used in the industries of chemical engineering, papermaking, textile and foodstuffs, but its main disadvantage is its low efficiency. There have been very few studies on liquid ring pumps in our country over the past three decades. Now even experienced liquid ring pump designers seldom know the design principles of high efficiency pumps. China is still widely used SZ type liquid ring pump for vacuum or compression. SZ-4 pump maximum efficiency <33%, the actual operation of the isothermal efficiency <25%. SZ-3 type for chlorine pressure machine, its efficiency <20%. Another disadvantage is that these liquid ring pump life is very short, SZ-4-type pump shaft period is not