【摘要】 一大型石化工程中乙烯乙二醇装置用碳酸盐泵投料运行后,泵机组和进出口管线就发生异常的噪声与振动现象,严重影响到生产安全和作业环境。笔者分析了异常噪声、振动的原因,认为是由于泵发生汽蚀所致;提出了在泵进口管线增设射流装置的措施,将泵自身出口的一部分高压液体引入到射流装置,并与来自储罐的液体混合,增加液体压头后提供给泵进口,以提高装置的有效汽蚀余量,消除大型泵机组由于汽蚀引起的噪声、振动;研讨了射流装置的设计参数和结构设计。通过增设射流装置的技术的措施,有效地解决了泵机组及进出口管线的异常噪声、振动问题,消除了化工系统的安全生产隐患。该技术措施还可以用于电厂等有类似问题的其他装置,有广泛的实用价值。更多还原

【Abstract】 In the vinyl alcohol process of a large-scale petrochemical project, abnormal noise and vibration appear in the carbonate pump and at the inlet and outlet of the pipeline seriously influencing the work safety. The cause is due to cavitation in the pump. A kind of jet device is mounted at the inlet to transfer high pressure fluid from discharge to the inlet, so that the NPSH available is increased and abnormal noises and vibration are eliminated. Here the structural and design parameters of the jet device are introduced. It is a universal technique, could be used in power plant and similar equipment, and could be widely applied.更多还原