CO_2离心式压缩机高压缸转子变转速、变流量工况下轴向推力的计算与分析

Calculation and analyses of the axial thrust of the rotor in the high pressure cylinder of a CO2 centrifugal compressor under the condition of various rotary speeds and flow rates.

在测量ＣＯ２离心式压缩机高压缸转子各级叶轮性能曲线的基础上，研究了变转速、变流量工况下高压缸转子轴向推力的变化规律，揭示了ＣＯ２压缩机高压缸转子在启动过程中容易发生窜轴事故的原因。针对５２万ｔ／ａ尿素装置实际生产过程的特点，提出了控制轴向推力大小。

The change laws of the axial thrust of the rotor in the high pressure cylinder of a CO2 centrifugal compressor in the working condition of various rotary speeds and flow rates were studied,the accident cause of axis damage of the rotor in the high pressure cylinder of a CO2 centrifugal compressor in the starting process was revealed based on measuring the performance curves of the impellers of the rotor.Some methods of controlling the axial thrust and preventing the axis damage were proposed for the characteristics of 520000t/a urea plants in production.