空分设备离心液氮泵汽蚀性能优化设计  

Optimized design of cavitation performance of centrifugal liquefied nitrogen pump for air separation plant

作　　者：贾自强 Jia Ziqiang

机构地区：[1]中国五环工程有限公司

出　　处：《深冷技术》2018年第4期19-24,共6页

摘　　要：简述液氮泵汽蚀的原理及危害。根据汽蚀余量分析，从泵安装高度、入口管线设计、设备及管道绝热、储罐内液位及压力控制、气相疏导、泵本体设计及选型、运行控制等方面探讨了提高汽蚀性能的措施。分析了某工程案例中离心液氮泵的汽蚀现象，并给出了整改方案。The principle and hazards of the cavitation performance of the liquefied nitrogen pump are outlined. The measures to improve the cavitation performance are approached from many aspects （ pump erection height, design of entrance pipeline, thermal insulation of equipment and pipeline, in-tank liquid level, pressure control, gas phase diversion, selection and design of the pump itself, and the operation control ） from the analysis of the cavitation tolerance. Meanwhile, the cavitation phenomenon of centrifugal liquefied nitrogen pump in a given project case is analyzed and the improvement scheme is proposed.

关 键 词：离心低温液体泵 液氮 汽蚀 优化设计 

分 类 号：TH311[机械工程—机械制造及自动化]