某型发动机测试系统设计

【作者】 朱艳；

【导师】 杨波； 罗载奇；

【作者基本信息】 电子科技大学 ， 机械工程， 2009， 硕士

【摘要】 发动机测试系统设计技术是发动机研发测试领域的重要内容,测试系统的设计质量直接关系到发动机台架试验的安全,关系到发动机技术状态、技术指标的分析与评定,是发动机顺利研制的重要保障。及时开展发动机测试系统设计的研究工作,设计出满足发动机研制要求的,先进性、安全性、可实现性和经济性互为折中的高质量测试系统意义重大。为了满足某发动机设计任务书提出的测试系统设计要求,本文首先介绍了该型发动机测试系统总体技术方案,包括测试项目、测试受感部及传感器的布局、测试要求以及测试方法等。通过对测试项目的筛选,开展了传感器的选择和测试方法的研究,同时结合发动机各部件的结构形式,讨论和分析了测试受感部及传感器的布局,并最终确定传感器的安装位置及安装方式;其次通过台架的性能试验,给出了测试系统在性能试验中的验证情况。按照测试参数的录取、显示要求配置台架数采系统的测量通道及仪表,通过台架试验来验证测试系统的设计是否满足预期目标。最后,讨论和分析了红外测温测量、叶尖间隙测量在部件试验中的应用情况,为整机试验奠定了良好的技术基础。发动机试验结果表明,本文提出的测试系统设计方法和总体技术方案是成功的,按此方法和方案设计的测试系统完全能够满足某型发动机试验的要求。本文的工作不仅对该型发动机的研制做出了积极贡献,而且其设计思想和研究成果也可广泛地用于各型现役/在研发动机测试系统的设计或改进,具有较高的经济效益和工程实用价值。更多还原

【Abstract】 The design technology of aero-engine measuring system is one of important research contents in the measuring area during the development of an aero-engine. The design quality of measuring system is directly related to the safety of engine testing, related to the analysis and evaluation of technical status and technical parameters of engine and therefore becomes one of crucial factors for the successful development of an aero-engine. Making systematic and deep researches about the design method of engine measuring system as soon as possible and developing a good quality measuring system which can meet the requirements from the development of aero-engine, meanwhile, with a good balance among high technical level, safety, realizability and cost, are of great importance.On the basis of the design requirements of the measuring system from the development of a certain aero-engine, this paper firstly introduces the overall technical project of the measuring system, including measurement arrangement, measurement requirements and measuring methods. Based on the selected measurement items, the researches about the selection of sensors and measuring methods are made, and at the same time, measurement arrangement is discussed and analyzed in light of the structural features of engine components, and then the location and mounting style of sensors are determined. Secondly, the demonstration results of the measuring system in performance testing of a certain engine are provided in this paper. According to the requirements of parameter record and display, measuring channels and instrumentation are arranged and by means of engine testing, the agreement between the actual performance of the measuring system and its design goal can be checked and demonstrated. Finally, the discussion and analysis about the application in component testing of infrared-based temperature measurement and the measurement of the gap between blade tip and casing is made, which lays a good foundation for the engine testing. The results of engine testing indicates that the design method and overall technical project of the measuring system given in this paper are successful and the measurement requirements from a certain aero-engine testing can be fully met by the measuring system designed in light of the method and the overall project. Not only making its contribution to the development of a certain aero-engine, the achievements in this paper are but also helpful to the design or improvement of other measuring systems used in types of aero-engines in-service or being developed at present with its novel design idea and even the direct research results, and hence are of high economic benefits and wide application potential in engineering field.更多还原