【摘要】：水錘泵是一種不用電和油的自動(dòng)泵水機(jī)械,在缺電、無電的山區(qū)、農(nóng)村具有廣闊的應(yīng)用前景。為解決傳統(tǒng)設(shè)計(jì)過程中難以對(duì)流道進(jìn)行評(píng)析、研發(fā)周期長(zhǎng)以及產(chǎn)品性能低的難題,提出了水頭損失系數(shù)、閥瓣升力系數(shù)、閥瓣受力偏心距和出口流速分布均勻度的水錘泵內(nèi)部流道評(píng)價(jià)指標(biāo)和相應(yīng)的數(shù)學(xué)模型,建立了采用前擴(kuò)式和后擴(kuò)式流道的水錘泵數(shù)值模型,并進(jìn)行了分析對(duì)比。前擴(kuò)式和后擴(kuò)式流道的水頭損失系數(shù)分別為4.51和3.72,泄水閥的升力系數(shù)分別為4.11和2.23,泄水閥受力來流方向的偏心距分別為0.21 mm和2.02 mm,泄水閥出口的流速分布均勻度分別為47.8%和69.2%。經(jīng)對(duì)比,后擴(kuò)式流道的水頭損失系數(shù)和泄水閥升力系數(shù)小,受力偏心距大,出口流速分布均勻度高,是一種較為合理的布置形式。選擇后擴(kuò)式流道制造生產(chǎn)了新型水錘泵,在不同作用水頭和揚(yáng)程下進(jìn)行多工況性能測(cè)試,建立了揚(yáng)水量評(píng)估公式,給出了所需的來水量。
[Abstract]:Water hammer pump is a kind of automatic pumping machine without electricity and oil. It has a broad application prospect in the mountainous area where there is no electricity and no electricity. In order to solve the problems of difficult to evaluate the flow passage, long research and development cycle and low product performance in the traditional design process, the evaluation indexes and corresponding mathematical models of the internal flow channel of the water hammer pump with head loss coefficient, disc lift coefficient, disc force eccentricity and uniform outlet velocity distribution are put forward, and the numerical models of the water hammer pump using the front expansion channel and the post expansion channel are established, and the numerical models of the water hammer pump are analyzed and compared. The head loss coefficients of the front expansion channel and the post expansion channel are 4.51 and 3.72, respectively, and the lift coefficients of the discharge valve are 4.11 and 2.23, respectively. the eccentricity of the discharge valve is 0.21 mm and 2.02 mm, respectively. The uniformity of velocity distribution at the outlet of the drain valve is 47.8% and 69.2%, respectively. By comparison, the head loss coefficient and the lift coefficient of the discharge valve are small, the eccentricity of the force is large, and the uniformity of the velocity distribution at the outlet is high, so it is a more reasonable arrangement form. A new type of water hammer pump is manufactured by selecting the expanded runner. The performance of the pump is tested under different operating conditions, the evaluation formula of lifting water is established, and the required amount of water is given.
【作者單位】： 中國(guó)水利水電科學(xué)研究院流域水循環(huán)模擬與調(diào)控國(guó)家重點(diǎn)實(shí)驗(yàn)室;清華大學(xué)水利水電工程系;河北工程大學(xué)水利水電學(xué)院;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃課題(2016YFC0401808) 國(guó)家自然科學(xué)基金項(xiàng)目(51609265) 國(guó)家十二五科技支撐計(jì)劃(2015BAD24B02) 中國(guó)水科院科研專項(xiàng)(HY01458B802017)
【分類號(hào)】：TV136.2

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