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当空分设备氧气要求量减少时,工艺参数调整不及时,造成膨胀机机前温度升高,膨胀机转速升高到联锁跳车而停运。由于膨胀机的设计存在缺陷、仪表选型不合适和仪控联锁设置不合理,停车过程中膨胀机的叶轮、机封和转子损坏。详细介绍膨胀机的修复措施,以及为有效保护膨胀机而在控制联锁和操作方面实施的优化方案。
When the oxygen demand of air separation equipment is reduced, the process parameters are not adjusted in time, resulting in the increase of the temperature of the expander machine, the increase of the expander speed to stop the interlocking and jumping off the vehicle. Due to the flaw in the design of the expander, inappropriate instrument selection and irrational instrumentation and control interlock setting, the impeller, the mechanical seal and the rotor of the expander are damaged in the stopping process. Details of the expander repair measures, and in order to effectively protect the expander in the control of interlocking and operation of the implementation of the optimization program.