本文選題：變角調(diào)節(jié) + 運(yùn)動(dòng)相似��； 參考：《人民長(zhǎng)江》2017年17期

【摘要】：目前,國(guó)內(nèi)離心泵工作點(diǎn)的調(diào)節(jié)方法主要是采用變速調(diào)節(jié)和變徑調(diào)節(jié)法,但是變速調(diào)節(jié)和變徑調(diào)節(jié)都有一定的調(diào)節(jié)范圍,在某些情況下并不能完全滿足要求。針對(duì)中小型離心泵站和灌排兩用離心泵站,提出了利用變角調(diào)節(jié)來(lái)改變水泵運(yùn)行工況的方法。根據(jù)離心泵的水流運(yùn)動(dòng)特點(diǎn)及葉輪進(jìn)口相似三角形的關(guān)系,推導(dǎo)出了離心泵的流量數(shù)學(xué)模型。以山西省某供水工程和天津某灌排兩用離心泵站為例,通過(guò)改變?nèi)~片的入口安放角,達(dá)到調(diào)節(jié)水泵運(yùn)行工況的目的;同時(shí),針對(duì)天津某灌排兩用泵站的實(shí)際情況進(jìn)行了節(jié)能分析。分析結(jié)果表明:變角調(diào)節(jié)后可以減少能耗,提高工程的經(jīng)濟(jì)效益。
[Abstract]:At present, the methods of adjusting the working point of domestic centrifugal pump mainly adopt variable speed regulation and variable diameter regulation method, but the variable speed regulation and the variable diameter regulation have a certain range of regulation, and in some cases can not completely meet the requirements.According to the medium and small centrifugal pump station and the centrifugal pump station of irrigation and drainage, the method of changing the operating condition of the pump by adjusting the variable angle is put forward.According to the characteristics of centrifugal pump flow and the relationship between impeller inlet similar triangle, the mathematical model of centrifugal pump flow is derived.Taking a water supply project in Shanxi Province and an irrigation and drainage centrifugal pump station in Tianjin as an example, by changing the inlet angle of the blade, the purpose of regulating the operating conditions of the pump is achieved.Energy-saving analysis was carried out for a dual-purpose pumping station in Tianjin.The results show that the energy consumption can be reduced and the economic benefit of the project can be improved by adjusting the variable angle.
【作者單位】： 太原理工大學(xué)水利科學(xué)與工程學(xué)院;
【基金】：山西省國(guó)際科技合作項(xiàng)目(201603D421011) 山西省社會(huì)發(fā)展科技攻關(guān)計(jì)劃項(xiàng)目(20140313023-4)
【分類號(hào)】：TV675

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