Cov ntsiab lus 'flushing' thiab 'quench' often seem to be confused or misused when discussing seal support schemes for >slurry twj. Raws li cov ntsiab lus ntawm lub tshuab foob lub tshuab foob thiab lub foob ntim ntim ntim sib txawv me ntsis, kuv yuav tham txog lawv cais thiab tig.

Mechanical Seals

Qhov yooj yim mechanical seal flushing program yog yooj yim heev. Nws xav kom cov kua dej ntshiab / huv (feem ntau yog dej) nkag rau hauv qhov chaw nruab nrab ntawm lub foob tiag tiag thiab qhov txwv qhov hluav taws xob sab nraud. Cov kua dej ntws tawm yog nkag los ntawm lub siab siab dua li cov twj tso kua mis, yog li ua kom muaj txiaj ntsig zoo / ntws tawm ntawm lub tshuab foob thiab qhov chaw ua haujlwm huv.
Flushing txhais tau tias yog "cov kua dej uas nkag mus rau hauv cov kab noj hniav ntawm cov txheej txheem dej, ze rau lub ntsej muag foob, thiab feem ntau yog siv los ua kom txias thiab lubricate lub ntsej muag.

When flushing is required, the >slurry twj tso kua mis pom zoo rau API Option 32 kaw cov yeeb nkab raws li nws tsim nyog rau cov kev pabcuam uas muaj cov khib nyiab lossis cov khoom tsis huv uas tuaj yeem ua rau lub ntsej muag foob puas yog rov ua dua tshiab hauv qhov nruab nrab.
Ib qho dej ntshiab huv uas muab los ntawm ib qho chaw sab nraud feem ntau yog siv uas xa mus rau lub ntsiab sealing nto ntawm cov kua dej ntawm cov txheej txheem sealing. Los ntawm kev siv qhov sib txawv hauv caj pas bushing, lub thawv ntim khoom tuaj yeem rov qab mus rau qhov siab dua, kom ntseeg tau tias cov kua dej ntws tawm tsis tuaj yeem hla lub ntsej muag.

Slurry Pump

Ib txoj kev npaj quench, raws li lub npe qhia, yog tsim los quench lossis txias lub foob. Nws yog ib txwm siv yog tias lub sijhawm luv luv ntawm kev ua haujlwm qhuav yog xav tau. Raws li cov lus piav qhia hauv qab no, cov kua dej tau nkag mus rau hauv thaj tsam nruab nrab ntawm lub ntsej muag ntawm lub ntsej muag thiab qhov chaw kaw kom haum rau ntawm qhov tsav sab ntawm lub twj tso kua mis.
Nws yog feem ntau siv yog tias lub sijhawm luv luv ntawm kev ua haujlwm qhuav xav tau. Cov kua dej nkag mus rau hauv thaj tsam nruab nrab ntawm lub ntsej muag ntawm lub ntsej muag thiab lub qhov hluav taws xob nruj ntawm qhov tsav sab ntawm lub tshuab slurry.

Quenching txhais tau tias yog "kev taw qhia ntawm cov kua nruab nrab (feem ntau yog dej los yog chav dej) rau hauv huab cua sab ntawm lub foob kom tiv thaiv kev tsim cov khib nyiab uas tuaj yeem cuam tshuam kev txav los yog siv rau lwm lub hom phiaj.
Qee qhov quench seals tau npaj los hloov qhov kev txwv nruj nruj nrog lub foob thib ob thiab lub qhov hluav taws xob sab saum toj uas tuaj yeem raug xa mus rau kev ntes cov dej quench siv thiab ntws los ntawm kev sib dhos. Txawm li cas los xij, lub hauv paus ntsiab lus yog tib yam, peb sim ua kom txias lub foob es tsis txhob yaug nws hauv txhua txoj kev.

Ceeb Toom: Ib qho yuam kev ntau tshaj yog ua kom siab tshaj lub thawv thiab ua rau cov khoom siv hluav taws xob kim.

Slurry Pump

Packing lub thawv foob

The main objective of all flush water programmes is to prevent contamination of the seals by pumped water.The flush water programme for boxes is therefore very similar to the flush water programme for mechanically sealed boxes. However there are still some obvious mechanical differences.  The most notable difference is the addition of a seal (packing) between the inlet and outlet limits. This minimises the amount of flushing fluid consumed.

Los ntawm kev ua haujlwm ntawm qhov pom lub thawv ntim khoom sib txawv raws li nws yuav tsum muaj qee qhov to kom ntseeg tau tias lubrication thiab tiv thaiv kom tsis txhob muaj cua sov. Mechanical foob lub thawv yuav tsum tsis txhob xau.
Txoj cai ntawm tus ntiv tes xoo rau kev teeb tsa dej siab yog tib yam thaum siv lub thawv ntim, txawm tias yaug. Cov av nkos kaw-tawm siab ntxiv 10% lossis ntxiv rau 20 psi, qhov twg ntau dua. Txawm li cas los xij, tus nqi ntws tau teeb tsa txawv.

Nrog rau cov txheej txheem dej ntws tawm, qhov ntws feem ntau yog hloov kho los ntawm kev ntim cov ntim kom txog thaum ob peb tee dej tau pom los ntawm cov ntsaws ruaj ruaj ntawm sab tsav. Nyob rau hauv lub sij hawm quench tus nqi ntws yog teem los ntawm kev kho lub inlet valve, thaum lub valve yog siv nyob rau hauv lub tso sab sab kom tswj tau qhov raug foob tank siab. Yog hais tias lub qhov hluav taws xob dej los ntawm lub thawv foob kub dhau, tus nqi ntws tau nce mus txog thaum lub qhov hluav taws xob dej txias, thaum tseem tswj xyuas qhov raug kaw lub thawv siab.

I hope this short blog has helped to clear up some of the confusion about the seal flush programme. Please always refer to the pump manual for specific details. If there are still questions, welcome to >tiv tauj peb hnub no.