汽轮机启动过程中润滑油压低故障分析  

Study on Trouble of Low Lube Oil Pressure during Steam Turbine Start-up

作　　者：谢尉扬 XIE Wei-yang(Zhejiang Zheneng Electric Power Co.,Ltd.)

机构地区：[1]浙江浙能电力股份有限公司,浙江杭州310007

出　　处：《电站系统工程》2020年第3期30-32,共3页Power System Engineering

摘　　要：汽轮机润滑油系统为各轴承提供润滑油,润滑油压力是十分重要的参数,润滑油压力低影响到汽轮机的安全运行。某机组在启动过程中出现润滑油压偏低情况,辅助油泵在汽轮机全速后不能停运。分析了汽轮机射油器的工作原理,找出了射油器出口逆止阀未能完全打开,使吸入室保持正压,造成润滑油在主油泵-射油器-出口逆止阀-主油泵环路内自身循环,是主油泵不能向润滑油系统供油的原因,为同类型故障的分析提供借鉴。Lube oil system supply lube oil to each bearing of steam turbine unit. The oil pressure is an important parameter which effects the safety operation of turbine unit. There happens low lube oil pressure when one turbine unit starts up so that the auxiliary oil pump does not stop. The paper analyzes the working principle of oil ejector and finds out the cause of the low oil pressure is that the outlet check valve of oil ejector does not open completely. The paper can be use for reference to similar trouble.

关 键 词：汽轮机 润滑油系统 射油器 自身循环 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]