MULTI-STAGE CENTRIFUGAL COMPRESSOR

摘要

PURPOSE: A multi-stage centrifugal compressor is provided to improve the possibility of a layout of a multi-stage centrifugal compressor by having a casting integrated structure. CONSTITUTION: A multi-stage centrifugal compressor(100) comprises a motor(3), a parallel gear accelerator part(2), a centrifugal impeller, and a integral casing. The parallel gear accelerator part contains a bull gear and pinion. The bull gear is driven by the motor. The pinion is interlocked with the bull gear. The centrifugal impeller is installed in three or more end parts of a rotary shaft where each pinion is arranged among the end parts of the rotary shaft. A cooler unit(15) is integrated in the integral casing. The cooler unit cools operation gas of high temperature compressed by the centrifugal impeller.