01. Cov khoom yuav tsum tau muaj
Cement siv rau hauv ob sab phlu ntawm cov kav hlau kav thiab fittings yuav tsum ua raws li cov kev cai ntawm GB/T 175 "General Silicate Cement," GB/T 201 "Aluminate Cement," thiab GB / T 748 "Sulfate-Resistant Silicate Cement." Txhawm rau kom muaj kev sib raug zoo nrog cov kua xa tawm, hom cement yuav tsum tau txiav txim siab los ntawm cov chaw tsim khoom lossis pom zoo los ntawm kev sib tham ntawm tus neeg muag khoom thiab tus neeg yuav khoom.
Cov xuab zeb siv yuav tsum muaj kev tswj hwm qhov loj me ntawm kev faib tawm txij li nplua mus rau ntxhib; cov khoom yuav tsum huv, inert, tawv, muaj zog, thiab ruaj khov. Qhov loj me me ntawm cov xuab zeb yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm tus qauv hais txog txheej txheej txheej txheej, txheej txheej thickness, thiab qhov chaw nyob.
Cov dej uas siv los sib tov mortar yuav tsum yog cov dej haus, thiab nws qhov kub thiab txias yuav tsum nyob nruab nrab ntawm 7 txog 35 degrees.
02.Centrifugal dewatering txheej txheem
Lub zog centrifugal tsim los ntawm qhov siab - kev sib hloov ceev ntawm cov cuab yeej ua kom ntseeg tau tias cov cement mortar txhaj rau hauv cov yeeb nkab yog sib npaug sib npaug ntawm cov phab ntsa sab hauv ntawm cov yeeb nkab hlau.
1. Thaum cov yeeb nkab tig nyob rau hauv qhov chaw nres tsheb centrifugal, tsis txhob muaj qhov tseem ceeb radial runout thiab tiv thaiv cov yeeb nkab los ntawm kev hloov mus rau qhov kawg ntawm qhov kawg.
2. Tom qab nchuav dej rau hauv txhua lub yeeb nkab, ntxuav cov slurry thiab dej seem ntawm lub qhov (socket) kab noj hniav thiab sab nrauv ntawm lub qhov ncauj kom paub tseeb tias ob qhov kawg huv si.
03.Kev kho mob ntawm chav dej
Tom qab cov cement mortar hauv ob sab phlu yog siv rau cov kav hlau kav, lawv yuav tsum tau ua kom muaj zog los txhawb kev kho cov hauv ob sab phlu. Cov kav dej yog hoisted rau hauv lub tank kho siv lub crane, qhov chaw lawv kho tau nyob rau hauv qhov kub siab - kub, siab - siab, qhov chaw ntub dej. Qhov no ua kom lub zog ntawm cov cement thiab tiv thaiv kev tawg, yog li txhim kho lub zog ntawm lub hauv ob sab phlu. Cov txheej txheem ua kom sov yog siv sijhawm li 8 teev.
04.Technical Requirements for Cement Lining
Cov txheej txheem tswj qhov tseem ceeb rau cov tuab ntawm cov cement hauv cov kav dej ntawm qhov sib txawv yog qhia hauv cov lus hauv qab no:
| DN (hli) | Txheem thickness | Plaub -point yam tsawg kawg nkaus ntawm tus ntoo khaub lig- ntu ntu | Qhov nruab nrab thiab hauv zos yam tsawg kawg nkaus |
|---|---|---|---|
| 80~300 | 4.0 | 3.0 | 2.5 |
| 350~600 | 5.0 | 3.5 | 3.0 |
| 700~1200 | 6.0 | 4.0 | 3.5 |
| 1400~2000 | 9.0 | 6.5 | 6.0 |
| 2200~2600 | 12.0 | 7.5 | 7.0 |