燃气轮机下部传动箱试验台研制及应用

Development and Application of Test Bench for Gas Turbine Transmission Box

下部传动箱是燃气轮机的关键部件之一,起到传递扭矩、驱动燃/滑油泵的重要作用。为解决其机械效率测试难、耐久性试验成本高的现状,研制出能模拟下部传动箱在燃气轮机上实际运行状态的试验台。该试验台主要包括机械结构、润滑系统、负载系统和测控系统。总体设计方案采用了相似的安装方式,并用有限元软件对底架进行模态分析,采用电涡流测功器作为加、卸负载设备,并使用LabView和PLC编制测控系统软件。应用该试验台可进行下部传动箱机械效率分析,以及实时获取转速、功率、扭矩、振动等参数。该试验台长周期无故障的应用,进一步证明研制的试验台可满足下部传动箱耐久性试验要求。

The lower transmission box is one of the key components of the gas turbine,which plays an important role in transmitting torque and driving the fuel and lubricating oil pump.In order to solve the current situation of difficult mechanical efficiency testing and high durability testing costs,a test bench capable of simulating the actual operating state of the lower transmission case on the gas turbine has been developed.The test bench mainly includes mechanical structure,lubrication system,load system,and measurement and control system.The overall design scheme adopted a similar installation method,and used finite element software to conduct modal analysis on the chassis.An eddy current dynamometer was used as the loading or unloading device,and the measurement and control system software was compiled using LabView and PLC.The test bench can be used to analyze the mechanical efficiency of the transmission box and obtain real-time parameters such as rotational speed,power,torque,and vibration.The long-term trouble-free application of the test bench further proves that the developed test bench can meet the durability test requirements of the lower transmission case.