Yuav Ua Li Cas Centrifugal Pumps Tiv Thaiv Cavitation?

Raws li paub zoo, thaum muaj huab cua nyob rau hauv lub casing ntawm lub twj tso kua mis centrifugal, qhov ceev ntawm cov huab cua yog tsawg dua li cov kua, uas ua rau ib tug me me centrifugal quab yuam. Yog li ntawd, qhov sib txawv ntawm qhov sib txawv ntawm cov kua hauv lub tank thiab lub twj tso kua mis qhov chaw nres nkoj tsis txaus los nias cov kua hauv lub tank cia rau hauv lub twj tso kua mis, uas txhais tau hais tias lub twj tso kua mis centrifugal tsis muaj peev xwm nqus nws tus kheej, ua rau nws tsis tuaj yeem. thauj kua. Qhov tshwm sim no hu ua "cavitation phenomenon". Yog li cas peb tuaj yeem txhim kho cov kev ua haujlwm tiv thaiv cavitation ntawm cov twj centrifugal? Dab tsi yog kev dag?
Tus yuam sij rau kev txhim kho cov tshuaj tiv thaiv cavitation ntawm cov twj centrifugal lawv tus kheej:
(1) Txhim kho cov qauv tsim ntawm qhov chaw nqus ntawm lub twj tso kua mis centrifugal mus rau thaj tsam ntawm lub impeller. Ua kom qhov chaw ntws; Ua kom lub vojvoog curvature ntawm inlet seem ntawm lub impeller npog phaj kom txo tau qhov nrawm nrawm thiab siab poob ntawm cov kua ntws; Txo lub thickness ntawm cov hniav inlet kom tsim nyog thiab rounding cov hniav inlet kom nws nyob ze rau lub streamline zoo zoo kuj yuav txo tau lub acceleration thiab siab poob ib ncig ntawm lub taub hau hniav; Txhim kho qhov smoothness ntawm lub impeller thiab hniav inlet kom txo tau qhov tsis kam; Txuas lub inlet ntug ntawm cov hniav mus rau qhov inlet ntawm lub impeller, tso cai rau cov kua dej kom tau txais kev ua haujlwm ua ntej thiab nce siab.
(2) Kev siv lub hauv ntej inducer los ua haujlwm ntawm cov kua ntws hauv pem hauv ntej inducer kom nce siab ntawm cov kua dej.
(3) Los ntawm kev siv ob chav suction impeller, tso cai rau cov kua ntws nkag mus rau hauv lub impeller ib txhij los ntawm ob sab, qhov inlet cross-section tuaj yeem raug muab faib ua ob npaug, thiab cov dej ntws tawm tuaj yeem raug txo los ntawm ob zaug.
(4) Cov qauv tsim tau txais lub kaum sab xis loj dua ntawm kev tawm tsam kom cov hniav nkag lub kaum sab xis, txo qhov khoov ntawm cov hniav inlet, txo cov hniav blockage, thiab ua kom cov inlet cheeb tsam; Txhim kho kev ua haujlwm nyob rau hauv cov nqi ntws siab kom txo qis kev poob. Tab sis lub kaum sab xis zoo ntawm kev tawm tsam yuav tsum tsis txhob loj dhau, txwv tsis pub nws yuav cuam tshuam rau kev ua haujlwm.
(5) Siv cov ntaub ntawv tiv thaiv cavitation. Kev xyaum tau pom tias qhov siab dua lub zog, hardness, thiab toughness ntawm cov ntaub ntawv, qhov zoo dua lawv cov tshuaj stability, thiab lub zog lawv kuj mus cavitation yaig.