【摘要】：泵作為液體輸送裝置廣泛應用于國民經(jīng)濟的各個領域,當前我國泵設備耗電量占全國用電總量的比例大。面對嚴峻的國際能源形勢,在加速開發(fā)新能源的同時,研究利用余熱廢熱驅(qū)動的泵系統(tǒng)、設計研發(fā)具備出色輸送性能的泵產(chǎn)品成為國內(nèi)外學者和泵制造廠商的關注重點。 本文回顧泵的發(fā)展歷史和當前泵節(jié)能技術進展,提出了一種用低品位余熱驅(qū)動的液體輸送泵。研制了該泵的實驗樣機并設計搭建了測試平臺,對該液體輸送泵的工作特性開展了理論計算與樣機測試,為設計研發(fā)該類新型液體輸送泵打下了初步基礎。主要內(nèi)容和結論有： 1.理論分析泵工作時,液體在低壓側的充注和液體在高壓側的降落過程。計算得到轉速、高壓側壓力、低壓側壓力、轉子通道個數(shù)和通道半徑的變化對泵流量、軸功率、輸送性能系數(shù)和泵效率的影響。計算結果表明在優(yōu)化結構設計的情況下,相同工況下輸送同樣質(zhì)量的流體所消耗的電能遠遠少于常規(guī)液體輸送泵。 2.以水為工質(zhì),高壓側通氮氣模擬高壓,開展了初步實驗研究,探究高壓側壓力、轉速、通道個數(shù)變化對流量、泵功率和泵輸送性能系數(shù)的影響。實驗結果表明：工質(zhì)在泵內(nèi)以氣液相混合狀態(tài)輸送；在高壓側壓力較大時,流量隨轉速增大而變小；泵功率隨高壓力增大而增大。 3.比較理論分析和實驗結果,兩者具有較好的一致性,并分析了高壓側壓力變化對實際流量影響的原因。
[Abstract]:As a liquid conveying device, pump is widely used in various fields of national economy. At present, the power consumption of pump equipment accounts for a large proportion of the total electricity consumption in China. In the face of the severe international energy situation, while speeding up the development of new energy, the research and development of pump system driven by waste heat and waste heat, the design and development of pump products with excellent transportation performance has become the focus of attention of scholars and pump manufacturers at home and abroad. In this paper, the development history of pump and the progress of pump energy saving technology are reviewed, and a liquid conveying pump driven by low grade waste heat is proposed. The experimental prototype of the pump is developed and the test platform is designed and built. The theoretical calculation and prototype test of the working characteristics of the liquid conveying pump are carried out, which lays a preliminary foundation for the design and development of this kind of new liquid conveying pump. The main contents and conclusions are as follows: 1. The filling of liquid on the low pressure side and the landing process of the liquid on the high pressure side are analyzed theoretically. The effects of rotating speed, high pressure side pressure, low pressure side pressure, the number of rotor channels and channel radius on pump flow, shaft power, transportation performance coefficient and pump efficiency are calculated. The calculation results show that under the condition of optimizing the structural design, the electric energy consumed by transporting the same mass of fluid under the same working condition is much less than that of the conventional liquid conveying pump. 2. Using water as working fluid, high pressure side nitrogen was used to simulate high pressure, and a preliminary experimental study was carried out to investigate the effects of high pressure side pressure, rotating speed and the number of channels on flow rate, pump power and pump transportation performance coefficient. The experimental results show that the working fluid is transported in the state of gas-liquid mixture in the pump, the flow rate decreases with the increase of rotating speed and the pump power increases with the increase of high pressure when the pressure on the high pressure is high. 3. Comparing the theoretical analysis with the experimental results, the two results are in good agreement, and the reasons for the influence of the change of high pressure side pressure on the actual flow rate are analyzed.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TB654

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