文章摘要
凝汽器罗茨水环真空泵抽气系统控制与仿真
Control and Simulation of Roots Water-ring Vacuum Pump Extraction System for Condenser
投稿时间:2019-05-08  修订日期:2019-12-03
DOI:
中文关键词: 气冷式罗茨真空泵  水环真空泵  控制策略  压缩比分配  变频系统
英文关键词: gas circulationScooledSroots vacuum pump  control strategy  water ring vacuum pump  compression ratio distibution  frequency conversion system
基金项目:
作者单位E-mail
王骏 江苏方天电力技术有限公司 aries_wj@139.com 
朱灵瑜 东南大学 能源与环境学院  
吴正勇 江苏方天电力技术有限公司  
卢承斌 江苏方天电力技术有限公司  
姚永灵 江苏方天电力技术有限公司  
黄恩和 东南大学 能源与环境学院 791761713@qq.com 
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中文摘要:
      本文针对目前电厂凝汽器采用的罗茨-水环真空泵复合抽气系统存在的配置不当、凝汽器真空度降低等问题,提出了两级压缩的罗茨水环真空泵变频控制抽气系统,通过两级压缩比的合理分配,改善抽气性能,降低系统抽气功率。基于真空泵数学模型建立抽气系统仿真试验平台,以提高抽气能力、降低泵组功率为目的确定最优运行方案并制定相应变频系统控制策略。进行了凝汽器进汽量、循环水量阶跃和启动阶段真空建立试验,结果表明抽气系统控制策略可靠,系统运行平稳,变频系统相比定转速系统节能效果明显。
英文摘要:
      Based on the prevailing problems of the roots water-ring vaccum pump combination extraction system for steam turbines that the inappropriate configuration of vaccum pumps leads to the increase of condenser vaccum degree, this paper put forward a roots water-ring pump frequency conversionScontrol extraction system. Based on the mathematical model of vaccum pumps,this paper establishes a simulation experimentalSplatform for the extraction system. Aimed at increasing the pumping capacity and reducing energy-consuming, the optimal operation plan is beterminede , the control strategy of the frequency conversion system is developed, the condenser step tests are performed. The results show that the control strategy of the pumping system is reliable and the system runs smoothly; the frequency conversion system has obvious energy saving effect compared to the fixed speed system.
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