大型压缩机组柔性结构应力管道安装

Installation of stress piping with flexible construction for large compressor train

为实现石油化工装置安全、平稳运行,必须确保其核心部位大型压缩机组的安装质量,其关键是解决大型压缩机组管道安装的应力问题,确保机组同心度及轴系同心度。针对GB-201大型压缩机组双进汽设计的柔性热力管道系统,预制过程中需在严格现场实测后进行精确下料和机械加工,组装过程中在透平基座布置百分表进行位移监测,组装完成后利用塞尺和千分尺对法兰同心度进行偏差测量并通过调整弹簧支架高度和管道位置保证偏差符合要求,并通过安装过程中加大监控力度消除对机组产生的应力。结果表明:以上方法的实施确保了管道系统安装尺寸的精确,有效保证了压缩机组柔性热力管道系统无应力安装,确保了大型压缩机组一次试车成功,实现了乙烯裂解装置投产运行。

To realize a safe reliable operation of petrochemical process units,the installation quality of large compressor trains must be ensured.The critical aspect is to solve the stress problems in installation of piping system of compressors and ensure the concentricity of compressor train and shaft system.In the fabrication of the flexible thermal power piping system of a large GB-201 compressor train,the materials are precisely cut and mechanically processed after strictly measurement at the site.In assembling process,the turbine base is examined by dial indicator for displacement.After assembly,difference in concentricity of flanges is measured with feeler and micrometer and the height of spring support and piping position are adjusted to meet difference requirement.At the same time,monitoring is greatly enhanced to eliminate the stress on the compressor train in installation.The practice of the above measures has ensured the preciseness of installation dimensions of piping system and stressless installation of flexible thermal piping system of compressor train.The large compressor train is successfully commissioned at the first try and ethylene cracking unit is operating smoothly.