胡明东,朱建新
HU Ming-dong,ZHU Jian-xin(Hefei General Machinery Research Institute

• 1:合肥通用机械研究院

摘要(Abstract)：

近年来,一些炼油装置的多级离心泵出口设置联锁阀的现象越来越普遍,主要用于避免停泵时的高压介质反串。为分析联锁设置对泵安全的影响,本文在对多级离心泵出口设置联锁阀的充分必要性进行深入分析的基础上,对设置联锁阀可能产生的误跳车情况及其可能的水锤现象进行深入分析。结果表明,多级离心泵出口设置联锁阀的必要性值得商榷,设置时要充分考虑阀门的关闭时间对系统安全的影响。
The configuration of safety instruments at the discharge of multistage centrifugal pump aiming at preventing high pressure letdown during shutdown is becoming more and more popular in refining installations in recent years.In order to study the influence of these safety interlocks on pump safety,the sufficiency and necessity of these interlock,especially emergency shutdown valve,were analyzed.The influence of spurious close of shutdown valve and associated water hummer were also studied.By analysis it is found that the necessity of safety instruments at the discharge of pump should be carefully studied.The findings are helpful for the determination of minimum close time of emergency shutdown valve.

关键词(KeyWords)： 离心泵;联锁阀;水锤现象;安全;误跳车
centrifugal pump;block valve;water hammer phenomenon;safety;spurious trip

Abstract:

Keywords:

基金项目(Foundation): “十二五”科技支撑计划项目(2011BAK06B02、2012BAK13B03);; 安徽省国际科技合作项目(08080703023);; 安徽省自然科学基金项目(11040606M106);; 中国石化科技开发项目(311028)

作者(Author): 胡明东,朱建新
HU Ming-dong,ZHU Jian-xin(Hefei General Machinery Research Institute

参考文献(References)：

• [1]IEC commission,Functional safety of electrical/elec-tronic/programmable electronic safety-related systems-Part1:General Requirements[S].1998.12.
• [2]IEC commission,Functional safety–Safety instru-mented systems for the process industry sector–Part1:Framework,definitions,system,hardware and soft-ware requirements[S].2003.1.
• [3]唐广军,包磊磊,张玉娟,等.进料泵轴腐蚀原因的分析及解决措施[J].流体机械,2011,39(9):61-63.
• [4]阿卜杜艾尼,谢彦斌.加氢装置原料泵的故障分析及处理[J].流体机械,2012,40(3):55-58.
• [5]陈炜,庄力健,朱建新,等.基于(石化装置)系统RBI-SIL分析的承压设备完整性评估技术[J].压力容器,2012,29(9):47-53.
• [6]朱建新,方向荣,庄力健.安全完整性技术(SIL)在我国石化装置上的应用实践及思考[J].化工自动化及仪表,2012,(10):1253-1259.
• [7]宋小宁.加氢装置安全仪表系统设计[J].自动化仪表,2008,(11):64-68.