压力容器在制造和焊接过程中及服役期间都无法避免裂纹的产生.裂纹会使压力容器的强度和刚度明显降低,还会在高温、高压、强腐蚀等极端服役环境下扩展,使压力容器结构断裂的概率增大,容易导致安全事故的发生.采用有限元软件ANSYS Workbench建立有无内表面轴向裂纹的压力容器圆筒模型,计算出不同裂纹深度和位置条件下压力容器的自振频率,分析裂纹深度和位置对压力容器安全性的影响规律.研究结果表明,压力容器的自振频率随着裂纹相对深度的增加而减小,裂纹所处的位置越靠近筒体中间时越危险.

With the severe piping vibration caused by the gas pulsation of the reciprocating compressor, installing the orifice plate near the large container of the pipe system is an effective and simple solution for decreasing the gas pulsation in the field. In this paper, the fluid dynamics analysis proves that the improved orifice tube structure can better decrease the gas pulsation, and it is effective to reduce the piping vibration of a reciprocating compressor unit which is caused by the gas pulsation. The gas pulsation amplitude in the compressor pipeline system is decreased fundamentally by using the orifice tube, and the unit is in good running condition after the transformation, which effectively guarantees the long-term stable operation of the unit.

针对高压临氢装置在检修后开工期间,遇见临氢系统环槽面法兰泄漏问题,结合近年来国内在在密封垫片,紧固螺栓工具等方面所取得的先进成果,编写维修技术要点,研究结果以对高温临氢法兰的检修维修做指导作用,从而进一步保障后期高温临氢法兰在检修后的密封性能,从而更好地服务于安全生产.

加氢裂化装置高压系统氮气气密是装置试车过程中的关键步骤,目的主要是在氮气工况较高压力等级下进行气密,查找漏点并消缺,旨在尽早暴露问题、解决问题;其次是结合已有规程和试车方案的内容,通过实践进行验证,收集相关原始基础数据,为后续开工过程积累经验、提供依据;并初步考察关键设备K102、加热炉F101、高压空冷、换热器运行状况。本文对乌石化公司加氢裂化装置高压氮气气密过程中出现的问题进行了分析和总结。