排灌机械工程学报
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排灌机械工程学报  2018, Vol. 36 Issue (6): 467-471    DOI: 10.3969/j.issn.1674-8530.16.0116
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离心泵瞬时启动过程的仿真
吴绍科1*, 张跃文2, 张鹏2
1.中交水运规划设计院有限公司信息系统设计所, 北京 100007; 2.大连海事大学省级重点实验室船舶动力装置故障监测实验室, 辽宁 大连 116026
Simulation on performance of a centrifugal pump during rapid startup period
WU Shaoke1*, ZHANG Yuewen2, ZHANG Peng2
1.Water Transport Planning and Design Co, . Ltd., China Communications Construction Company Limited, Beijing 100007, China; 2.College of Marine Engineering, Dalian Maritime University, Dalian, Liaoning 116026, China
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摘要 为了更进一步研究高比转数大功率离心泵的瞬时工况,应用Flowmaster软件搭建离心泵运行模型,根据实际测量参数设置边界条件,仿真并与试验结果进行对比,在可信的情况下,针对泵不同的启动方式进行仿真分析,量化了星-三角启动的优点.在此基础上,在不同阀门开度下,获得了离心泵的瞬时启动转速、流量、功率和出口压力的特性曲线,进而进行量纲一化分析.结果表明,星-三角启动属于缓慢启动方式,启动过程平缓,且整个过程中功率增长均匀,对设备冲击小;在离心泵的启动过程中,流量上升特性主要取决于电动机自身的启动特性,且在初期时上升缓慢,使流量达到稳定的时间大大滞后于转速达到稳定的时间;量纲一化的系数一直变化,与准稳态假设不符,从而得出离心泵启动时清晰的瞬态过程.
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吴绍科*
张跃文
张鹏
关键词离心泵   Flowmaster   启动   瞬态特性     
Abstract: To further research instantaneous characteristics in the centrifugal pump during the startup period, first, the results simulated by the software Flowmaster and the experimental results were compared, and then the situation that pump started up by different ways was simulated and analyzed. It showed that star-delta starting was in favour of the pump compared to the direct-starting. Based on this, Flowmaster was used to simulate the instantaneous starting speed, flow rate, power and outlet pressure of the centrifugal pump with the different valve openings. At last, the non-dimensional analysis was carried out. The results show that the star-delta starting belongs to the slow-start and is better than the direct-starting. In the start-up process of the centrifugal pump, flow rate characteristics are mainly determined by the motor starting characteristics and rise slowly at the beginning. The time that the flow rate reaches the stablility from zero laggs far behind the time that the rotating speed does. The dimensionless coefficient varie all the time and it can not be inconsistent with the quasi-steady state assumption.
Key wordscentrifugal pump   Flowmaster   startup   transient characteristics   
收稿日期: 2016-05-24;
基金资助:

中国船级社项目(9215294)

引用本文:   
吴绍科*,张跃文,张鹏. 离心泵瞬时启动过程的仿真[J]. 排灌机械工程学报, 2018, 36(6): 467-471.
WU Shao-Ke-*,ZHANG Yue-Wen-,ZHANG Peng-. Simulation on performance of a centrifugal pump during rapid startup period[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 467-471.
 
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