某引进型发动机喘振故障研究  

Research on Surge Fault of an Imported Engine

作　　者：刘芳明 蒋永宁 王章瑞 杨益 LIU Fangming;JIANG Yongning;WANG Zhangrui;YANG Yi(Chengdu State-owned Jinjiang Machinery Factory,Chengdu 610043,China;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031)

机构地区：[1]成都国营锦江机器厂,四川成都610043 [2]西南交通大学轨道交通运载系统全国重点实验室,四川成都610043

出　　处：《机械》2023年第10期28-32,共5页Machinery

基　　金：国家青年基金项目——强湍流多物理场激励下高速列车车体结构声振耦合机理研究(P111722G04001)。

摘　　要：针对某引进发动机在外场使用过程中出现频次较高的喘振故障问题,基于发动机结构图解和放气活门在不同工况下的作动机制,阐释了该型发动机压气机的工作原理,并结合压气机压力调节系统,深入剖析发动机喘振故障的产生原因,发现发动机喘振故障主要是由于压气机前气压紊乱引起。为降低该发动机故障发生几率,进一步研究了发动机喘振故障的主要特征和表现形式,并基于此提出了一套新工艺方法和预防措施。本研究可为维护航空发动机的正常工作以及保障发动机在使用过程中的可靠性和安全性提供参考。In this paper,aiming at the high-frequency surge fault problem of an engine used outdoors,on the basis of the engine structure diagram and the working mechanism of the bleed valve under different working conditions,the working principle of the air compressor of this type of engine is explained,and the cause of the engine surge failure is analyzed in combination with the air pressure adjustment system of the air compressor.It is found that the engine surge failure is mainly caused by the air pressure disorder in front of the air compressor.In order to reduce the probability of engine failure,the main characteristics and manifestations of engine surge failure are further studied,and a set of new process methods and preventive measures are proposed.This research can provide a reference for maintaining the normal operation of the aero-engine and ensuring the reliability and safety of the engine during use.

关 键 词：发动机 喘振故障 放气活门 气压紊乱 可靠性 安全性 

分 类 号：V231.92[航空宇航科学与技术—航空宇航推进理论与工程]