液压驱动隔膜泵隔膜破裂报警系统设计  

Design of Diaphragm Fracture Alarming Control System for Hydraulic Driven Diaphragm Pump

作　　者：张洪生[1] 张宏利[1] 郭绍波[1] 张新国[2] 刘运昌[3] 

机构地区：[1]兰州理工大学机电工程学院 [2]胜利油田东辛采油厂 [3]91033部队

出　　处：《机床与液压》2011年第7期58-61,共4页Machine Tool & Hydraulics

基　　金：甘肃省自然科学基金资助项目(0703B-04)

摘　　要：针对目前石油、冶金、电力等行业中常用的隔膜泵存在的隔膜破裂后不能继续工作、影响正常生产的问题,以三缸单作用液压驱动隔膜泵为研究对象,提出一种新的隔膜破裂报警系统设计方案:当单个隔膜破裂时,系统可以发出报警信号,经工作人员确认后相应的液压缸停止工作,而其他两液压缸可以继续工作;两个或两个以上隔膜破裂时,系统发出报警信号的同时隔膜泵停止运转。基于PLC的逻辑控制功能,利用三菱FX2-64MR型PLC对这种隔膜破裂报警方案进行了程序设计,可实现隔膜破裂实时报警、隔膜破裂个数检测、停止报警、两液压缸工作相位调整、隔膜泵自动停机及料浆输出量测定和调整等功能。现场试验表明:在PLC的控制下,这种隔膜破裂报警设计方案,可以保证单个隔膜破裂后隔膜泵的正常运行,是一种有效的设计方案。Diaphragm pump which are used in petroleum,metallurgy,electrical power and some other industries,can＇t be used after diaphragm fracture and the normal production is affected.Aiming at the problem,a new design scheme about diaphragm fracture alarming control system was put forward,taking three single functional cylinders hydraulic driven diaphragm pump as research object.The scheme was that：If one diaphragm was broken,alarming signals could be sent out and the corresponding hydraulic cylinder was stopped after the staff conformed;If two or more diaphragms were broken,alarming signals could also be sent out at the time of pump stopping working.Using the logic control functions of FX2-64MR PLC produced by Mitsubishi company,programs for diaphragm fracture alarming were designed to achieve the functions,such as real-time alarming for diaphragm fracture,amounting the numbers of breaking diaphragms,stopping alarming,rearrangement of two hydraulic cylinders＇ work phases,stopping of pump,determination and adjustment of material pulp output.The field test shows that the new design scheme can guarantee diaphragm pump working normally under the condition of one diaphragm broken.It is an effective method.

关 键 词：液压驱动隔膜泵 PLC 组合液压缸 隔膜破裂报警系统 

分 类 号：TH137[机械工程—机械制造及自动化]