H3.3-20/220（320）氮氢气压缩机（以下简称H3.3氮氢机）是年产5000吨合成氨化肥厂的主机设备,六级缸体是压缩机高压侧之主要工作零件。该机功率W=320千瓦,转速n=600转/分。缸体工作介质为氮（N2）与氢（H2）之混合气体,全机共六级压缩,最后出口压力为320公斤/厘米～2。六级缸体工作条件见表1. H3.3-20 / 220 (320) Nitrogen and Hydrogen Compressor (hereinafter referred to as H3.3 Hydrogen Generator) is the main equipment of an annual output of 5000 tons of synthetic ammonia fertilizer plant, six cylinder body is the main working parts of the high-pressure side of the compressor. The aircraft power W = 320 kW, speed n = 600 rev / min. The working medium of the cylinder is a mixed gas of nitrogen (N2) and hydrogen (H2), with a total of six compressors. The final outlet pressure is 320 kg / cm2. Six cylinder working conditions in Table 1.