Investigating the performance degradation of centrifugal pumps

研究离心泵的性能下降

• 批准号: 506193-2016
• 负责人: Ahmed, Wael
• 金额: $ 7.29万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618482
• 关键词: Investigating; performance; degradation; centrifugal; pumps

While the amount of energy used for pumping varies depending on a number of factors, the energy consumption in pumping systems accounts for approximately 10% of the world's electrical energy demand. Also, the life-cycle cost of running a pump is often far outweighs their capital cost and the pump inefficiencies usually account for up to approximately 25 per cent of potential energy savings in pumping systems. It therefore stands to reason that energy efficiency and evaluating performance degradation of pumps should be an important consideration to the operation of variety of systems including but not limited to energy production, cooling, heating, food processing, water distribution, etc. Several factors play a significant role in performance degradation of pumps such as vibration, hydraulic factor including cavitation, recirculation, axial thrust, radial thrust, and pressure pulsations, corrosion, erosion and maintenance. Different methods were developed to monitor degradation in pumps including: vibration spectral analysis, modal analysis, acoustic emission analysis, and motor current or power analysis. Historical trending of process parameters such as temperature, pressure, flow rates, and infrared imaging are also used. However, very limited studies were developed to evaluate the effect of operation and varying the system load on pump performance over the entire life of the pump. Also, evaluating the effect of multi-degradation mechanism on the pump performance has not been studies before. Therefore, the objective of this study is to experimentally investigate the performance degradation of different type of pumps of interest to Xylem Co. under different operating conditions. Also, the automation system analysis will be used to develop a diagnostic tool for predictive maintenance. The gained knowledge from this research will enable better design of the pumps and develop a better operation control. This will not only save energy consumption in the pumping system, but also will improve the pump reliability, and reduced life cycle costs, which will directly benefit the Canadian economy.

虽然用于抽水的能源量因多种因素而异，但抽水系统的能耗约占世界电能需求的 10%。此外，运行泵的生命周期成本通常远远超过其资本成本，并且泵效率低下通常占泵送系统潜在节能的约 25%。因此，理所当然，能源效率和评估泵的性能退化应该成为各种系统运行的重要考虑因素，包括但不限于能源生产、冷却、加热、食品加工、配水等。有几个因素在泵的性能退化中发挥着重要作用，例如振动、水力因素，包括空化、再循环、轴向推力、径向推力和压力脉动、腐蚀、侵蚀和维护。人们开发了不同的方法来监测泵的退化，包括：振动频谱分析、模态分析、声发射分析以及电机电流或功率分析。还使用温度、压力、流量和红外成像等过程参数的历史趋势。然而，用于评估在泵的整个使用寿命期间运行和改变系统负载对泵性能的影响的研究非常有限。此外，之前还没有研究评估多重降解机制对泵性能的影响。因此，本研究的目的是通过实验研究赛莱默公司感兴趣的不同类型泵在不同操作条件下的性能下降情况。此外，自动化系统分析将用于开发用于预测性维护的诊断工具。从这项研究中获得的知识将有助于更好地设计泵并开发更好的操作控制。这不仅会节省泵送系统的能源消耗，而且会提高泵的可靠性，并降低生命周期成本，这将直接有利于加拿大经济。