汽轮机螺杆主油泵安全阀频繁起跳处理总结

TREATMENT SUMMARY OF SAFETY VALVE FREQUENT TAKE-OFF OF STEAM TURBINE SCREW MAIN OIL PUMP

鼓风机汽轮机和引风机汽轮机是某公司2500t/d甲醇装置的重要设备.安装在汽轮机轴端的主油泵为三螺杆泵.2台主油泵运行过程中,本体安全阀均出现不同程度频繁起跳现象.通过对故障现象进行研究和排查,确定了问题所在.根据2台主油泵故障特点分别采取有效措施,重新调配鼓风机主油泵油量并调整自力式调节阀开度;引风机则通过改变油泵齿轮箱转速比,降低油泵转速,消除了设备故障.上述经验可为相关技术人员处理类似故障提供参考.

Blower steam turbine and induced draft fan steam turbine are important equipment of the 2500t/d methanol plant of certain company.The main oil pump installed at the shaft end of the steam turbine is a three-screw pump.During the operation of the two main oil.pumps,the main safety valves of the main body have taken off frequently to varying degrees.By studying and troubleshooting the failure phenomenon,the problem was.identified.According to the failure characteristics of the.two main oil pumps,effective measures were taken involving redeploying the amount of oil in the main oil pumps of the blower and adjusting the opening of the self-regulating valve.For the.induced draft fan,the equipment fault was eliminated through changing the speed ratio of the gear box of oil pumps to reduce the speed of oil pumps.The above-mentioned experience can provide reference for relevant technical personnelto deal with similar faults.