立式(shì)管道(dào)離心泵的安裝(zhuāng)技術關鍵在于(yú)确定離心(xīn)泵安(ān)裝(zhuāng)高(gāo)度(dù)即(jí)吸程(chéng)。這個高度是(shì)指(zhǐ)水源水面到
立(lì)式管(guǎn)道離心泵(bèng)
葉輪中心線的垂直(zhí)距離,它與(yǔ)允許吸上(shàng)真(zhēn)空(kōng)高度不能混爲(wèi)一談,水(shuǐ)泵(bèng)産品(pǐn)說明書或(huò)銘牌(pái)上标(biāo)示的允許(xǔ)吸上(shàng)真空高度(dù)是指(zhǐ)水(shuǐ)泵(bèng)進水(shuǐ)口斷面上的真(zhēn)空值(zhí),而(ér)且是在(zài)1标準大氣(qì)壓下(xià)、水溫20℃情(qíng)況下,進行試(shì)驗而測定(dìng)得的(de)。它(tā)并沒有(yǒu)考慮(lǜ)吸水管道(dào)配(pèi)套(tào)以後的水(shuǐ)流狀況。而(ér)水泵(bèng)安裝(zhuāng)高(gāo)度應該是允許吸(xī)上真(zhēn)空高度扣(kòu)除了(le)吸水管(guǎn)道損失(shī)揚程(chéng)以後,所剩(shèng)下的(de)那部(bù)分數(shù)值,它要(yào)克服實(shí)際地形吸水高(gāo)度。水泵安裝高(gāo)度不能超過計算值,否則,離心(xīn)泵将會抽(chōu)不上水來。另(lìng)外,影響(xiǎng)計(jì)算值的(de)大小(xiǎo)是吸水管道(dào)的(de)阻力損失(shī)揚程,因此(cǐ),宜采用短的管(guǎn)路布置,并盡量少裝彎頭(tóu)等配件,也(yě)可(kě)考(kǎo)慮适當配大一些口徑(jìng)的(de)
立式(shì)管道離心泵
水管,以減管(guǎn)内流(liú)速(圖\文
xiaojikuaipao.top/
)。
中譯英(yīng):
vertical pipeline centrifugal pump installation technology is the key to determine the suction centrifugal pump installation height. this highly refers to the water surface to the vertical pipeline centrifugal pump impeller centerline vertical distance, and it allows suction vacuum height can not be confused, pump product brochures or nameplate marking allows suction vacuum height refers to the value of the vacuum on the water inlet of the water pump section, and in1 standard atmospheric pressure, water temperature 20℃condition next, the test and measurement. it does not take into account the suction pipe supporting later flow condition. and the pump mounting height should be allowed to deduct the suction vacuum suction piping loss of lift, the remaining portion of numerical value, it is to overcome the real terrain suction height. pump mounting height should not exceed the calculated value, otherwise, centrifugal pump will be pumped to not sheung shui. in addition, affect the calculation value is the size of the suction piping resistance loss of lift, therefore, should adopt the most short circuit arrangement, and minimize the loaded elbow parts, may also be considered appropriate with a larger caliber vertical pipeline centrifugal pump water pipe, to reduce the flow velocity in the tube.
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