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空气机械一般根据工作原理,大体上分为离心式和轴流式送风机（风扇和鼓风机）、离心式和轴流式压缩机、回转式压缩机（罗茨鼓风机、螺杆压缩机、滑片式压缩机等）以及往复式压缩机。特别是往复式压缩机,很早以来就安装在矿山、造船厂等的风动机械用的空气压缩机站。另一方面,例如合成化工厂把它作为氨合成用的主机（按克劳德制氨法,经常用终压为1000公斤/厘米2的压缩机）,为有关的技术人员所欢迎。近来,随着工业生产的发展,由于各种机
Generally according to the working principle of air machinery generally divided into centrifugal and axial blowers (fans and blowers), centrifugal and axial compressors, rotary compressors (Roots blowers, screw compressors, vane compression Machine, etc.) and reciprocating compressors. In particular, reciprocating compressors have long been installed at air compressor stations for pneumatic machinery such as mines and shipyards. On the other hand, for example, the Synthetic Chemical Industry Plant, as a host for ammonia synthesis (according to the Claude’s ammonia process, often uses a compressor with a final pressure of 1,000 kg / cm 2), is well-known to those skilled in the art. Recently, with the development of industrial production, due to a variety of machines