基于模糊控制的疏浚泥射水抽真空装置真空度可调设计

发布时间：2018-01-26 05:16

本文关键词： 射流泵变频调速模糊控制真空度可调疏浚泥　出处：《排灌机械工程学报》2017年12期 　论文类型：期刊论文

【摘要】：基于变频调速方法改变射流泵喷嘴处的喷射强度,从而改变抽真空能力,实现射流泵抽真空装置的真空度可调.以MSP430F149单片机为主控模块设计了控制系统的硬件,并采用模糊控制的方法实现离心泵转速控制,在搭建的试验台上开展了真空度可调试验.结果表明:所设计的射流泵尺寸结构不变时,真空度随离心泵转速提高(或者射流泵工作水流量的增大)而增大;射流泵抽真空试验装置真空度调节范围在0~92 kPa,真空度控制精度在5 kPa以内,达到稳定的设定值所需要的实际时间在25 s以内;试验结果表明模糊控制的方法具有自适应强的特点,装置能获得稳定可靠的真空度控制.对比闸阀调节真空度的方法,变频形式具有节能的优点,真空度可调的特性也将在井点降水等其他抽真空领域中获得应用.
[Abstract]:The jet intensity at the nozzle of the jet pump is changed based on the variable frequency speed regulation method, thereby changing the vacuum pumping capacity. The vacuum degree of the jet pump vacuum pump is adjustable. The hardware of the control system is designed with MSP430F149 single chip microcomputer as the main control module, and the speed control of centrifugal pump is realized by fuzzy control method. The vacuum degree adjustable test was carried out on the test rig. The results show that the vacuum degree increases with the increase of centrifugal pump speed (or the water flow rate of jet pump) when the size of the designed jet pump is invariable. The vacuum degree adjustment range of jet pump vacuum test device is 0 ~ 92 KPA, the control precision of vacuum degree is less than 5 kPa, and the actual time required to reach a stable setting value is within 25 s. The test results show that the fuzzy control method has the characteristics of self-adaptive, the device can obtain a stable and reliable vacuum control. Compared with the gate valve to adjust the vacuum degree, the frequency conversion has the advantage of energy saving. The characteristics of adjustable vacuum degree will also be applied in other vacuum pumping fields such as well point dewatering.
【作者单位】：南水北调东线江苏水源有限责任公司;江苏省泵站工程技术研究中心;江苏大学国家水泵及系统工程技术研究中心;
【基金】：国家科技支撑计划项目(2015BAB07B06) 中国博士后基金资助项目(2014M560380) 江苏省博士后基金资助项目(1401004A)
【分类号】：TV53
【正文快照】： 212013)冯旭松,向清江,吉锋,等.基于模糊控制的疏浚泥射水抽真空装置真空度可调设计[J].排灌机械工程学报,2017,35(12):1048-1053.FENG Xusong,XIANG Qingjiang,JI Feng,et al.Design vacuum degree adjustable device based on fuzzy control in dredged sludgetreatment[J].

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