某型涡轴发动机燃气涡轮转速跳变故障分析
Fault Analysis of Gas Turbine Speed Jump in a Certain Type of Turboshaft Engine
宋宇航 1樊建楼 1孟庆骁 1樊伟杰 2关丁铭 1时越1
作者信息
- 1. 中国人民解放军 91331 部队,辽宁 葫芦岛 125100
- 2. 海军航空大学青岛校区,山东 青岛 266041
- 折叠
摘要
目的 针对某型涡轴航空发动机在直升机地面试车和空中飞行过程中均出现右侧发动机燃气涡轮转速(Ng)跳变现象,且转速跳动数值超出允许范围这一问题,提出解决方案.方法 从燃气涡轮转速数据测量原理出发,通过建立故障树排故方法,检查可能对Ng造成跳变影响的各相关部位,并进行相关附件的更换.结果 通过一系列排故工作,并结合发动机地面试车情况,对故障源头进行了准确定位,确定跳变为Ng传感器与发动机传动齿轮配合间隙过大导致的假跳变,非Ng转速真实发生跳变,是较为罕见的故障源.结论 经过发动机厂专家的验证,完成传动齿轮的更换,排除了故障,并给出了预防和排除该类型故障的建议.
Abstract
The work aims to propose a solution aiming at that a certain type of turboshaft aircraft engine experiences a right engine gas turbine speed(Ng)jump phenomenon during helicopter ground testing and air flight,and the speed jump value ex-ceeds the allowable range.From the principle of measuring gas turbine speed data,a fault tree troubleshooting method was es-tablished to check various relevant parts that might cause jumping effects on Ng,and replace relevant accessories.Through a se-ries of troubleshooting work and combined with the ground test results of the engine,the source of the fault was accurately lo-cated,and it was determined that the jump was caused by a false jump due to excessive clearance between the Ng sensor and the engine transmission gear which was a relatively rare fault source,rather than the real jump of Ng speed.Finally,after verification by experts from the engine factory,the transmission gear is replaced,and the fault is eliminated.Suggestions for preventing and eliminating this type of fault are also provided.
关键词
燃气涡轮转速/涡轴发动机/转速传感器/转速跳变/传动齿轮/直升机Key words
gas turbine speed/turboshaft engine/speed sensor/speed jump/transmission gear/helicopter引用本文复制引用
基金项目
国家自然科学基金(52101392)
山东省自然科学基金青年项目(ZR2020QD081)
出版年
2024
NETL
NSTL
万方数据