泵站設(shè)計(jì)關(guān)鍵ppt課件-閱讀頁(yè)
2025-01-30 00:01本頁(yè)面
【正文】 pump 除備用泵以外的水泵數(shù)量 ?2 Effective Volume 有效容積 nZQV p??? m a xE f f 4 G r u n d f o s F L O W T H I N K I N G18 2 Effective Volume 有效容積 ? 傳統(tǒng)泵站計(jì)算方法－給水排水設(shè)計(jì)手冊(cè)（第五冊(cè)）－城鎮(zhèn)排水 G r u n d f o s F L O W T H I N K I N G19 2 Effective Volume 有效容積 ? 傳統(tǒng)泵站計(jì)算方法－給水排水設(shè)計(jì)手冊(cè)（第五冊(cè)）－城鎮(zhèn)排水 G r u n d f o s F L O W T H I N K I N G20 Exercice 練習(xí) ?Qp = 52,8 l/s ?2 pumps in alternating operation ?雙泵交替運(yùn)行 ?Circular tank : diameter 2300 mm ?圓形池：直徑 2300mm Information given: 已知信息 ?The effective volume Veff ?有效容積 Veff Calculate: 計(jì)算 G r u n d f o s F L O W T H I N K I N G21 Correction 正確的計(jì)算 Circular tank : diameter 2300 mm, R=1,15 m 圓形池：直徑 2300mm,R= Qin = 52,8 l/s is equal to 190 m3/h Qin = 52,8 l/s 等于 190 m3/h 3m a xm75,4104 1904 ????? ZQV pe f f e c t i v em14,115,1 75,4 22 ????? ??rVH e f f e c t i v ee f f e c t i v er Veffective Heffective G r u n d f o s F L O W T H I N K I N G22 ?3 ?3 +4 – distance 距離 Distance 3 is about 10 cm 距離 3大約 10cm Distance 4 is about 10 cm, but it can be choosen by the customer 距離 4大約 10cm,但可由客戶選擇 110 mm Minimum volume 最小容積 Effective volume 有效容積 ?1 ?2 ?4 Alarm level 報(bào)警液位 Inlet port 進(jìn)口端 Start level 啟泵液位 Bottom 底部 Stop level 停泵液位 G r u n d f o s F L O W T H I N K I N G23 Pumping station sizing 泵站尺寸 Distance 5 frostfree depth or local regulations 距離 5為冰凍線以下或按照地方法規(guī) Distance 6 Minimum 5 cm – to prevent water from entering the pit 距離 6最小為 5cm，防止水從頂蓋進(jìn)入泵站 Distance 5 and 6 must be given by the customer 距離 5和 6應(yīng)由客戶提供 Ground level 地面標(biāo)高 ?5 ?6 Top cover頂蓋 Discharge port 出口端 G r u n d f o s F L O W T H I N K I N G24 Pumping station sizing 2 pumps 泵站尺寸－雙泵 Pumping cycle two pumps 兩臺(tái)泵泵送周期 Pumping cycle one pump 一臺(tái)泵泵送周期 P1 P1 P2 Bottom底部 Stop level停泵液位 Inlet port 進(jìn)口端 Start level pump 1 水泵 啟動(dòng)液位 1 Minimum level 最小液位 Effective level 有效液位 ?1 ?2 Start level pump 2 ? Distance between start levels about 10 cm ? 啟動(dòng)液位之間的距離約 10cm 水泵啟動(dòng)液位2 Alarm level 報(bào)警液位 Grundfos FLOW THINKING 25 The right pumping station for the customers need 符合客戶需求的泵站 FAQ (Frequently asked questions) （常問(wèn)問(wèn)題） G r u n d f o s F L O W T H I N K I N G26 How can I protect the pit from uplift ? 如何抗浮 ?In area with high groundwaterlevel, or in area with high possibility for heavy rain there is a risk for uplift. ?在地下水位較高的區(qū)域，或在可能會(huì)降暴雨的區(qū)域，存在泵站上浮的風(fēng)險(xiǎn)。 Situation情形 G r u n d f o s F L O W T H I N K I N G27 What is uplift? 什么是上浮 Archimedes39
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