汽轮机综合测试系统研制
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摘要
本论文介绍研制的用于某型号船舰的动力设备汽轮机出厂时的质量检测测试系统。汽轮机作为大型的旋转设备是主要的动力转换元件,其工作运行状况比较特殊,系统运行要求比较严格。研制的测试系统针对汽轮机组及其辅助系统的近200路信号进行测试测量,主要有汽轮机机组的振动位移、烈度、加速度、蒸汽温度和压力;润滑油温度、压力和流量等,以评估汽轮机系统运行的质量。
     测试系统采用分布式结构,基于先进的PXI总线技术,选用美国NI公司的14槽PXI-1044机架,高精度温度和电压记录板卡PXI-4351,动态信号采集卡PXI-4472B,M系列多功能采集卡PXI-6221、PXI-6225等数据采集板卡。软件开发基于LabVIEW开发平台,对测试信号进行时域、频域分析处理。
     系统软件设计采用虚拟仪器设计理念,基于事件驱动的菜单编程、ActiveX技术、DataSocket技术和数据库技术,实现了测试数据在时域内的PI图、列表、棒图、趋势图显示和最大最小值等特征值分析;频域内的频谱图、幅值图、功率谱、轴心轨迹显示及分析;具有网络化数据传输,数据Excel保存与查询显示等功能。
     测试系统具有友好的人机界面,除具有Windows软件的菜单操作外,还具有虚拟仪器风格,界面美观、操作简单,使用方便等优点。经实验室测试分析,系统满足技术指标要求,测试功能完善,运行可靠,具有高精度和高可靠性的特点。
The test system was developed to be used for turbine machine quality test which was used in some warship or steamship. The working status of the warship turbine machine and its auxiliary system was especial and strict because it works as main power machine and large-scale rotator. To ensure the quality of turbine system, the new developed test system measures more than two hundred channels of parameters, including water steam temperature, steam pressure, oil pressureoil flowage, turbine machine vibration displacement, vibration velocity, acceleration and speed of turbine rotation.
     The test system used distributed architecture, based on the most advanced technology PXI, 14 slot PXI-1044 rack, high-precision temperature, voltage recorder PXI-435, dynamic signal acquisition card PXI-4472B and data acquisition device M series multifunction acquisition card PXI-6221, PXI-6225 and etc.
     The system software was developed based on LabVIEW 8.20 version to realize signal acquisition, filter, process and analysis in time domain and frequency domain.
     Utilizing the LabVIEW 8.20 version virtual instrument graphic program language as software developing platform, this system software was designed human-machine interface menu based on event-driven, ActiveX and DataSocket technique. The measured data were saved into real-time relationship database to realize the time-domain signal display including PI graph, list text, bar chart, signals Max. and Min. value, average value etc; signal frequency domain analysis functions including signal spectrogram, power spectrum, filter function realized by FFT algorithm. By webpage program, the measured data can be viewed and displayed through internet. The system also saves data into Excel for printing later or being proceed by other application software.
     The test system has advantages of visual interface, easy operation, convenient usage with Windows style menu items and virtual instruments interface.
     By lab test of the system, the new developed testing system reaches the requirements of specifics and measure precision. It also has lots of powerful testing and analysis functions.
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