Slurry cavitation mechanism
Cov duab tshwj xeeb ntawm cov hniav thiab qhov nrawm nrawm uas muaj kev hloov pauv sai ntawm cov yam ntxwv ntws ntawm cov kua hauv Slurry flow impeller, ua rau cov nplooj ntoos cov kua dej siab faib ua qhov tsis sib xws.
Cov kua theem inlet flow blade, cov hniav tsis ua rau cov kua ua ntej, muaj qhov tsis tshua muaj siab hauv zos.Thaum tsis tshua muaj siab ntawm cov kua ntws siab yog txo mus rau qhov saturated vapor kub ntawm cov kua, cov kua yuav vaporize los ua npuas maj mam pib;npuas nrog cov kua dej ntws hauv txoj kev ntws ntawm lub sijhawm thiab qhov siab dua qhov kev hloov pauv hloov pauv.Lub sijhawm npuas tawg, cov kua dej nyob ib puag ncig cov npuas tawg ua npuas tsim thaum lub qhov nrawm nrawm nrawm, thiab nrog rau qhov kub thiab txias hauv cheeb tsam, qhov kub siab dej rauj tshwm sim, uas yog cov txheej txheem ntawm cavitation.Raws li cov kws tshawb fawb txawv teb chaws txoj kev tshawb fawb qhia tau hais tias cavitation dej rauj yog cov yam ntxwv tseem ceeb ntawm ib nrab siab txog li 30MPa (manometry cheeb tsam ntawm 1.5mm2).Tau raug ntsuas cavitation tshwm sim thaum cov kua dej rauj zaus ntawm 25,000 zaug / thib ob, cov hlau nto hauv qab dej rauj rau ntau zaus los ntawm kev qaug zog puas tsuaj.
Thiab, nyob rau hauv ib tug nruam cyclical siab yoj, cov kua sai sai nkag mus rau hauv thiab tawm ntawm lub qhov hws ntawm cov hlau, cov hlau nto ntawm ib tug concavity, cov hlau hais thiab cov kua nyob deb ntawm leej niam, uas ua rau hnyav pitting.Loj qhov chaw ntawm lub twj tso kua mis nyob rau hauv xws li ib tug periodic quab yuam, lub twj tso kua mis yuav ua rau lub suab nrov thiab kev co, yog li ntawd lub twj tso kua mis cavitation zoo txaus ntshai, feem ntau nyob rau hauv cov nram qab no yam: kev ua tau zoo ntawm lub twj tso kua mis nosedive.
Ntawm no taw tes HQ nkhaus, NQ nkhaus downward trend li ntawd,slurry twj manufacturersLub twj tso kua mis hnyav tsis ua haujlwm, lub twj tso kua mis ntws cuam tshuam, feem ntau yog vim lub twj tso kua mis cavitation, lub impeller thiab lub zog hloov pauv ntawm cov kua dej puas thiab cuam tshuam, cov kua channel thaiv tsis yog los ntawm cov npuas, thiab cov dej ntws nce ntxiv.Daim duab 2: Slurry twj tso kua mis tsim kev co thiab suab nrov.Cavitation tshwm sim thaum lub siab siab nrog rau cov npuas vau ntawm tsis tu ncua ua rau muaj zog hydraulic shock, ua rau lub twj tso kua mis vibration thiab suab nrov.
Slurry twj tso kua mis mechanical nto ntws Cheebtsam los ntawm txhua yam kev puas tsuaj, nto ntawm impeller honeycomb los yog spongy.Yog hais tias cov roj tso tawm thaum lub sij hawm vaporization ntawm cov kua yog corrosive, yuav tsim ib tug tej yam tshuaj puas tsuaj (kev puas tsuaj ntawm lub qub yog lub ntsiab).
Post lub sij hawm: Lub Xya hli ntuj-13-2021