精品亚洲国产三级_日韩精品一区二区亚洲AV无码_精品国产福利在线观看91帕_日本阿v视频在线观看高清_香蕉在线视频播放_欧美成人网一区二区_av香港经典a毛片免费观看_高清成人爽A毛片免费直播_日韩AV中文无码字幕色最新_久久 婷婷 亚洲

全國服務(wù)熱線:18631165157
網(wǎng)站公告:
誠信換來金招牌 服務(wù)贏得天下客...
聯(lián)系我們
18631165157
地址:
安國市南陽工業(yè)區(qū)
郵箱:
415130881@qq.com
電話:
18631165157
傳真:
0312-3427286
手機(jī):
18631165157
公司新聞 News
當(dāng)前位置:首頁 > 新聞動態(tài) > 公司新聞
渣漿泵功率流量曲線繪制方法
添加時(shí)間:2020.01.31

渣漿泵功率流量曲線繪制方法
    同樣,先將理論功率Pt和理論流量Qt關(guān)系在圖1- 30中表示為曲線1.在理想情況下Pt=Pe=Ph,所以曲線也是po-Qr曲線。在實(shí)際條件下,由于存在機(jī)械摩擦損失功率PmP=Ph+Pm,Pm基本上與流量無關(guān),故可將曲線1上各點(diǎn)的縱坐標(biāo)上移Pm后就得到泵的軸功率P與理論流量Qr(P-Qr)曲線(曲線2)。當(dāng)考慮泵的流量損失影響時(shí),將圖1-29H-qH-Qr曲線也畫在圖1- 30(曲線3和曲線4),P-Qr各點(diǎn)的橫坐標(biāo)減去相當(dāng)H下的q ,得到恒定轉(zhuǎn)速下實(shí)際的軸功率P與流量Q(P-Q)性能曲線(曲線5)。因?yàn)闄C(jī)械損失功率Pm及其他各種水力損失都無法計(jì)算,所以P-Q曲線只能通過試驗(yàn)測定繪出。渣漿泵

Drawing method of power flow curve of slurry pump

In the same way, the relationship between theoretical power Pt and theoretical flow QT is represented as curve 1 in Figure 1-30. In an ideal case, Pt = PE = pH, so curve 1 is also Po QR curve. In actual conditions, due to the existence of mechanical friction loss power △ PM. And P = Ph + △ PM, but △ PM basically has nothing to do with the flow, so the vertical coordinates of each point on curve 1 can be moved up △ PM to get the curve of pump shaft power P and theoretical flow QR (p-qr) (curve 2). When considering the influence of pump flow loss, H-Q and h-qr curves in Fig. 1-29 are also drawn on Fig. 1-30 (curves 3 and 4). The actual performance curves of shaft power P and flow Q (P-Q) under constant speed are obtained by subtracting Q under equivalent h from the abscissa of p-qr points (curve 5). Because the mechanical loss power △ PM and other various hydraulic losses can not be calculated, the P-Q curve can only be drawn through the test. Slurry pump