摘要
在化工、石油、矿山等高耗能产业中,存在大量高压流体通过减压阀进行直接排放的现象,造成了大量的能源浪费.采用离心泵反作透平对这部分能量进行回收利用是一种经济且实用的方法,但对离心泵在透平工况下的性能预测是其应用的关键技术及难点之一.文中系统总结了近年来国内外对离心泵作透平在性能预测方面的研究进展,并对未来的研究方向进行了展望.首先,对离心泵作透平的高效点预测、全工况特性预测方面的研究及进展进行了分类总结和评述:在透平的高效点预测方面,主要采用了经验预估、理论分析、智能算法预测等方法对泵和透平工况下的流量、扬程换算因子进行了计算;在透平的全工况特性预测方面,主要采用了试验拟合、理论分析、数值计算等方法揭示了透平在偏工况与最佳工况下的特性换算关系.最后,探讨了目前研究中存在的一些问题及对未来的研究方向进行了展望.
In high energy-consuming industries such as chemical,petroleum and mining,there is a large amount of high-pressure fluid discharged directly through pressure reducing valves,resulting in a large amount of energy waste.The use of centrifugal pumps as turbine(PAT)to recycle this energy is an economic and practical method,but the performance prediction of centrifugal PAT is one of the key technologies and difficulties in its application.So the research progress of centrifugal PAT in perfor-mance prediction at home and abroad in recent years are systematically summarized,and an outlook on the future research is provided.Firstly,the research and progress of centrifugal pumps for the prediction of high efficiency point and full working condition characteristics of PAT are summarized and reviewed.In the prediction of high efficiency point of PAT,the flow and head conversion factors of pump and turbine operating conditions are calculated by empirical prediction,theoretical analysis and intelligent algorithm prediction.In the prediction of the full working conditions of the PAT,experimental fitting,theoretical analysis,numerical calculation and other methods are used to reveal the conversion relationship between the turbine under the partial working conditions and the optimal working conditions.Finally,some problems in the current research are discussed and the future research directions are prospected.
作者
林通
朱祖超
李晓俊
谢京
LIN Tong;ZHU Zuchao;LI Xiaojun;XIE Jing(Jiangxi College of Applied Technology, Ganzhou, Jiangxi 341000,China;National and Local Joint Engineering Laboratory of Fluid Transportation Technology, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China)
出处
《排灌机械工程学报》
CSCD
北大核心
2021年第6期562-568,共7页
Journal of Drainage and Irrigation Machinery Engineering
基金
江西省教育厅科学技术研究项目(GJJ191344)
江西应用技术职业学院校级课题(JXYY-KJ-201709)。
关键词
液力透平
性能预测
研究现状
离心泵
研究展望
pump as turbines
performance prediction
researching status
centrifugal pump
researching prospect
