'Cavitation' yog dab tsi? Thaum muaj huab cua nyob rau hauv lub centrifugal twj tso kua mis casing, ib tug me me centrifugal quab yuam yog generated vim qhov tsawg tsawg ntawm cov huab cua piv rau cov kua. Yog li ntawd, lub siab sib txawv ntawm cov kua theem saum lub tank cia thiab lub twj tso kua mis qhov chaw nres nkoj yog tsis txaus los nias cov kua nyob rau hauv lub tank cia rau hauv lub twj tso kua mis, uas yog, lub centrifugal twj tso kua mis tsis muaj self-priming peev xwm, uas ua rau lub centrifugal. twj tsis tuaj yeem thauj cov kua. Qhov tshwm sim no hu ua "cavitation phenomenon". Yog li yuav ua li cas txhawm rau txhim kho kev ua haujlwm tiv thaiv cavitation ntawm cov twj centrifugal? Dab tsi yog kev dag?
(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 cov cheeb tsam overcurrent; 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; Tsim nyog txo cov thickness ntawm cov hniav inlet thiab muab nws mus rau ib tug streamline zoo zoo kuj yuav txo tau lub acceleration thiab siab poob nyob ib ncig ntawm lub taub hau hniav; Txhim kho qhov smoothness ntawm lub impeller thiab hniav inlet kom txo tau qhov tsis kam; Nthuav cov hniav inlet ntug ntawm lub impeller inlet kom cov kua ntws tau txais kev ua haujlwm ua ntej thiab nce siab.
(2) Los ntawm kev siv lub log pem hauv ntej induction, cov kua dej tuaj yeem ua haujlwm ua ntej hauv pem hauv ntej induction log kom ua kom cov kua ntws siab.
(3) Los ntawm kev siv ob chav suction impeller, cov kua dej nkag mus rau hauv lub impeller los ntawm ob sab tib lub sijhawm, ua ob npaug ntawm qhov nkag mus hla ntu thiab txo qhov inlet khiav nrawm.
(4) Cov qauv tsim tau txais lub kaum sab xis loj me me ntawm kev tawm tsam kom cov hniav nkag mus, txo qhov khoov ntawm cov hniav inlet, txo cov hniav thaiv, thiab ua kom cov inlet cheeb tsam; Txhim kho kev ua haujlwm nyob rau hauv cov dej 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 uas tiv taus cavitation. Kev xyaum tau pom tias qhov siab dua lub zog, hardness, thiab toughness ntawm cov khoom, qhov zoo dua nws cov tshuaj stability, thiab lub zog nws kuj rau cavitation.