管網(wǎng)計(jì)算步驟課件

管網(wǎng)計(jì)算步驟.服從真理，就能征服一切事物管網(wǎng)計(jì)算步驟.服從真理，就能征服一切事物1管網(wǎng)計(jì)算步驟1、求沿線流量和節(jié)點(diǎn)流量2、求管段計(jì)算流量;3、確定各管段的管徑和水頭損失;4、進(jìn)行管網(wǎng)水力計(jì)算和技術(shù)經(jīng)濟(jì)計(jì)算;5、確定水泵揚(yáng)程和水塔高度。管網(wǎng)計(jì)算步驟26.2設(shè)計(jì)流量分配與管徑設(shè)計(jì)6.21節(jié)點(diǎn)設(shè)計(jì)流量分配計(jì)算(1)用水流量分配·為進(jìn)行給水管網(wǎng)的細(xì)部設(shè)計(jì),必須將總流量分配到系統(tǒng)中去,也就是將最高日用水流量分配到每條管段和各個(gè)節(jié)點(diǎn)上去。6.2設(shè)計(jì)流量分配與管徑設(shè)計(jì)3621節(jié)點(diǎn)設(shè)計(jì)流量分配計(jì)算長(zhǎng)Q1q1517配水干管集中流量:從一個(gè)點(diǎn)取得用水,用水量較大的用戶。分散流量:沿線眾多小用戶用水,情況復(fù)雜。621節(jié)點(diǎn)設(shè)計(jì)流量分配計(jì)算4(L/s)集中流量:qm=864qn一各集中用水戶的集中流量,L/sQ—各集中用水戶最高日用水量,m3/dK—時(shí)變化系數(shù)?？诟鶕?jù)實(shí)際管網(wǎng)流量變化情況設(shè)計(jì)管網(wǎng)非常復(fù)雜,加以簡(jiǎn)化。提出比流量,沿線流量,節(jié)點(diǎn)流量的概念(L/s)5比流量:為簡(jiǎn)化計(jì)算而將除去大用戶集中流量以外的用水量均勻地分配在全部有效干管長(zhǎng)度上,由此計(jì)算出的單位長(zhǎng)度干管承擔(dān)的供水量。O-∑長(zhǎng)度比流量:q=∑lqQ-2q面積比流量:4s∑A比流量:為簡(jiǎn)化計(jì)算而將除去大用戶集中流6沿線流量:干管有效長(zhǎng)度與比流量的乘積1:管段配水長(zhǎng)度,不一定等于實(shí)際管長(zhǎng)。無(wú)配水的輸水管,配水長(zhǎng)度為零;單側(cè)配水,為實(shí)際管長(zhǎng)的一半。街坊街坊公園街坊街坊街坊街坊街坊街坊沿線流量:干管有效長(zhǎng)度與比流量的乘積7節(jié)點(diǎn)流量:從沿線流量計(jì)算得出的并且假設(shè)是在節(jié)點(diǎn)集中流出的流量1-c)節(jié)點(diǎn)流量:從沿線流量計(jì)算得出的并且假設(shè)8按照水力等效的原則,將沿線流量一分為二分別加在管段兩端的節(jié)點(diǎn)上0.5集中流量可以直接加在所處的節(jié)點(diǎn)上;供水泵站或水塔的供水流量也應(yīng)從節(jié)點(diǎn)處進(jìn)入管網(wǎng)系統(tǒng)按照水力等效的原則,將沿線流量一分為二9例:所示管網(wǎng),給水區(qū)的范圍如虛線所示,比流量為q,求各節(jié)點(diǎn)的流量。L日2輸水管礦4紛水區(qū)范例:所示管網(wǎng),給水區(qū)的范圍如虛線所示,比流10解:以節(jié)點(diǎn)3、5、8、9為例,節(jié)點(diǎn)流量如下:望a(2“8q=2g(l4-s+l2-6+b-+x=2g(4,-…+l2+4)Ho因管段8-9單側(cè)供水,求節(jié)點(diǎn)流量時(shí),將管段配水長(zhǎng)度按一半計(jì)算。解:以節(jié)點(diǎn)3、5、8、9為例,節(jié)點(diǎn)流量如下:11管網(wǎng)計(jì)算步驟課件12管網(wǎng)計(jì)算步驟課件13管網(wǎng)計(jì)算步驟課件14管網(wǎng)計(jì)算步驟課件15管網(wǎng)計(jì)算步驟課件16管網(wǎng)計(jì)算步驟課件17管網(wǎng)計(jì)算步驟課件18管網(wǎng)計(jì)算步驟課件19管網(wǎng)計(jì)算步驟課件20管網(wǎng)計(jì)算步驟課件21管網(wǎng)計(jì)算步驟課件22管網(wǎng)計(jì)算步驟課件23管網(wǎng)計(jì)算步驟課件24管網(wǎng)計(jì)算步驟課件25管網(wǎng)計(jì)算步驟課件26管網(wǎng)計(jì)算步驟課件27管網(wǎng)計(jì)算步驟課件28管網(wǎng)計(jì)算步驟課件29管網(wǎng)計(jì)算步驟課件30管網(wǎng)計(jì)算步驟課件31管網(wǎng)計(jì)算步驟課件32管網(wǎng)計(jì)算步驟課件33管網(wǎng)計(jì)算步驟課件34管網(wǎng)計(jì)算步驟課件35管網(wǎng)計(jì)算步驟課件36管網(wǎng)計(jì)算步驟課件37管網(wǎng)計(jì)算步驟課件38管網(wǎng)計(jì)算步驟課件39管網(wǎng)計(jì)算步驟課件40管網(wǎng)計(jì)算步驟課件41管網(wǎng)計(jì)算步驟課件42管網(wǎng)計(jì)算步驟課件43管網(wǎng)計(jì)算步驟課件44管網(wǎng)計(jì)算步驟課件45管網(wǎng)計(jì)算步驟課件46管網(wǎng)計(jì)算步驟課件47管網(wǎng)計(jì)算步驟課件48管網(wǎng)計(jì)算步驟課件49管網(wǎng)計(jì)算步驟課件50管網(wǎng)計(jì)算步驟課件51管網(wǎng)計(jì)算步驟課件52管網(wǎng)計(jì)算步驟課件53管網(wǎng)計(jì)算步驟課件54管網(wǎng)計(jì)算步驟課件55管網(wǎng)計(jì)算步驟課件56管網(wǎng)計(jì)算步驟課件57管網(wǎng)計(jì)算步驟課件58管網(wǎng)計(jì)算步驟課件59管網(wǎng)計(jì)算步驟課件60管網(wǎng)計(jì)算步驟課件61管網(wǎng)計(jì)算步驟課件62管網(wǎng)計(jì)算步驟課件63管網(wǎng)計(jì)算步驟課件64管網(wǎng)計(jì)算步驟課件65管網(wǎng)計(jì)算步驟課件66管網(wǎng)計(jì)算步驟課件67管網(wǎng)計(jì)算步驟課件68管網(wǎng)計(jì)算步驟課件69管網(wǎng)計(jì)算步驟課件70管網(wǎng)計(jì)算步驟課件71管網(wǎng)計(jì)算步驟課件72管網(wǎng)計(jì)算步驟課件73管網(wǎng)計(jì)算步驟課件74管網(wǎng)計(jì)算步驟課件75管網(wǎng)計(jì)算步驟課件76管網(wǎng)計(jì)算步驟課件77管網(wǎng)計(jì)算步驟課件78管網(wǎng)計(jì)算步驟課件79管網(wǎng)計(jì)算步驟課件80管網(wǎng)計(jì)算步驟課件81管網(wǎng)計(jì)算步驟課件82管網(wǎng)計(jì)算步驟課件83管網(wǎng)計(jì)算步驟課件84管網(wǎng)計(jì)算步驟課件85管網(wǎng)計(jì)算步驟課件86管網(wǎng)計(jì)算步驟課件87管網(wǎng)計(jì)算步驟課件88

1、最靈繁的人也看不見(jiàn)自己的背脊。——非洲

2、最困難的事情就是認(rèn)識(shí)自己?！ＥD

3、有勇氣承擔(dān)命運(yùn)這才是英