林德公司许尔特(S■rth)分厂最近制造了一种终压为50绝压的无油活塞式压缩机供氦液化设备使用(图1)。当吸压为1．1-1．5绝压时气量为150或190米3/时。压缩的气体是干燥的。气体介质无油及漏入大气中的气体损失小-总漏气量为10-2毫升/秒 Linde’s Hürth plant recently built an oil-free piston compressor with a final pressure of 50 absolutes for use with helium liquefaction plants (Figure 1). When the suction pressure 1.1-1.5 absolute pressure when the amount of 150 or 190 m3 / hour. The compressed gas is dry. Gas medium without oil and leakage into the atmosphere of small gas loss - the total amount of air leak 10-2 ml / s