9FA燃气轮机清吹系统分析

以9FA燃气轮机为研究对象，在充分掌握燃气轮机清吹系统的组成结构及工作机理的前提下，对控制逻辑进行深入解析，根据清吹阀限位开关及阀间压力开关可排列组合出32种清吹系统潜在的运行工况，并分别定义其故障程度，建立起相关故障类型库。根据机组在实际运行过程中燃烧模式及故障程度的差异性来进一步制定相应的防范策略。通过对清吹系统控制逻辑的有效分析，掌握燃烧模式闭锁、自动停机、保护跳闸等逻辑实现机理，有助于及早发现清吹系统运行过程中出现的问题，进一步提高燃气轮机清吹系统运行的可靠性，为机组的安全稳定运行保驾护航。

Analysis of 9FA Gas Turbine Purge System

Taking 9FAgas turbine as the research object, on the premise of fully mastering the composition and working mechanism of gas turbine purge system, the control logic was deeply analyzed. According to the limit switch of purge valve and the pressure switch between valves, 32 potential operating conditions of purge system can be arranged and combined, and their fault degrees were defined respectively, and the relevant fault type library was established. Further formulate corresponding preventive strategies according to the differences of combustion mode and fault degree in the actual operation of the unit. Through the effective analysis of the purge system control logic, mastering the logic realization mechanism of combustion mode locking, automatic shutdown, protection tripping, etc. , it is helpful to find out the problems in the operation of the purge system as soon as possible, further improve the reliability of the operation of the gas turbine purge system, and escort the safe and stable operation of the unit.