We analyzed the centrifugal compressor ' s loading types , made certain the shift gears running work conditions of the centrifugal compressor , and putted forward the shift gears running energy - saving ratio calculational methods of centrifugal compressor , and discussed the centrifugal compressor ' s anti - surge conditions , and getted set the running ratating speed optimized mathematics model of centrifugal compressor 分析了离心式压缩机的负荷类型，确定了离心式压缩机变速运行工况，提出了离心式压缩机变速运行节能率计算方法，讨论了离心式压缩机的防喘振条件，建立了离心式压缩机运行转速优化的数学模型。
By using a same boundary dimensions high efficient and new type copper exchanger substituted carbon steel oil condenser , and increasing flow rate of circulation water to reduce the temperature of freezing oil which feeds into compressor stage , to eliminate the malfunction during compressor operation , and improve running efficiency of the machine 采取将碳钢材质的油冷却器更换成等外形尺寸的高效新型铜管换热器、增加循环水流量的方法，降低了进入二段压缩机冷冻油温度，排除了压缩机运行中的故障，改善了机组的运行效率。
