CAJ | 학술논문

为解决大型汽轮发电机组轴系热态标高变化测量问题,开发了基于激光和PSD技术的轴系标高测试系统.介绍了轴承标高测量原理和PSD工作原理,分析了影响标高测量精度的因素,提出了相应的解决办法,并给出了性能测试数据及应用实例.实测结果表明:系统分辨率为1 μm,测量精度为15μm,能连续在线同时监测大型汽轮发电机组各轴承绝对标高和相对标高变化;现场实测数据稳定、可靠,可为振动故障诊断提供依据,为轴系标高调整提供参考.
위해결대형기륜발전궤조축계열태표고변화측량문제,개발료기우격광화PSD기술적축계표고측시계통.개소료축승표고측량원리화PSD공작원리,분석료영향표고측량정도적인소,제출료상응적해결판법,병급출료성능측시수거급응용실례.실측결과표명:계통분변솔위1 μm,측량정도위15μm,능련속재선동시감측대형기륜발전궤조각축승절대표고화상대표고변화;현장실측수거은정、가고,가위진동고장진단제공의거,위축계표고조정제공삼고.
To solve the measurement problem of shafting elevation variation under thermal state in large turbo-generator unit, a test system of shafting elevation based on the technique of laser and PSD was developed. The bearing elevation measurement principle, as well as the operation principle of PSD was introduced, the factors affecting elevation measurement accuracy were analyzed, the corresponding solution method was put forward, and the performance test data and examples of application were given. Results show that the resolution and accuracy of the system are 1μm and 15μm respectively, and the system can continuously and simultaneously measure the changes of bearing absolute elevation and relative elevation on-line. The field test data is stable and reliable, it can provide basis for vibration fault diagnose and reference for shafting elevation adjustment.