Flange enkulu ububanzi njenge flange eqhelekileyo, ngenxa yokuba ingasetyenziswa kwiimeko ezahlukeneyo ezahlukeneyo kunye neenzuzo isiphumo esihle lishishini elithandwayo, imveliso isetyenziswa ngokubanzi koomatshini kunye namashishini imichiza kunye namanye amashishini, vumela abavelisi DHDZ flange ukwazisa. iimfuno zomgaqo-siseko wendibano kunye nolwakhiwo oluchasene nomhlwa.

I. Umgaqo-siseko weNdibano kunye neemfuno zeeflange ezinkulu zedayamitha
1. Xa udibanisa i-pair of flanges, imingxuma ye-bolt ye-flanges yokunyuka kufuneka ihambelane nemingxuma ye-bolt ehambelana ne-fixed flanges kunye neyodwa kunye ne-fixed flanges. Ukuphambuka akufanele kube ngaphezu kwe-1.5 kunye ne-2mm yobubanzi obungaphandle beeflange.
2. Jonga kwaye ulungise indawo yeflange ukusuka kwicala lasekhohlo nasekunene kunye neenyawo ezingama-90 zesikwere, kwaye ugqibezele ukuwelda kunye nokulungisa i-flange enkulu yedayamitha ngenqaku lesithathu kunye nelesine emva kokuwelda indawo.
3. Xa ukhetha iiflange ezihambelanayo zesixhobo okanye i-valve assembly, kufuneka kuthathelwe ingqalelo ukujonga ukuba iiflange zesixhobo sokuqala okanye i-valve assembly iyafana naleyo isetyenziswe kumbhobho.
4. Xa udibanisa iiflange ezine-flange-welded, ukuphela kombhobho kufuneka kufakwe i-2/3 yobukhulu bobubanzi obungaphakathi be-flange, kwaye emva koko udibanise i-flange kumbhobho. Kumbhobho othe tyaba, jonga i-weld ukusuka phezulu, emva koko ujonge ukuma kweflange ukusuka kumacala ahlukeneyo ngeenyawo ezingama-90 zesikweri ukuze umphezulu wokutywina ube ngokuthe tye kumgca osembindini wombhobho, emva koko beka i-weld ezantsi kwebala.
5. Ngaphambi kokudibanisa i-flange, hlambulula i-flange surface, ngakumbi indawo yokutywina.

Eyesibini, inkqubo yokusebenza kunye neempawu zolwakhiwo lwe-anti-corrosion ububanzi
Ukutywinwa kwe-corrosion inhibitor yokuzaliswa kwe-flange yokucoca ubukhulu obukhulu. Iphepha lokunamathisela (elicacileyo) kwi-tape kwi-flange edge ukukhusela i-flange ekubeni ingcolile xa i-injecting inhibitor corrosion; Vala kwaye ugcwalise i-flange clearance nge-corrosion inhibitor ukuqinisekisa ukuba i-flange clearance izaliswe ngokutywinwa kwe-corrosion inhibitor.
Emva kokuzalisa i-gap ye-flange nge-corrosion inhibitor, sebenzisa i-putty scraper ukugulisa ubuso obugudileyo kunye nolwalathiso olujikelezayo, ukwenzela ukuba i-gap kunye ne-flange edge kwindiza enye. krazula macala omabini eteyiphu.
Ukuba usebenzisa i-flange anticorrosion cream, kufuneka usebenzise imela ukusika i-flange anticorrosion cream ibe yimicu emxinwa, kwaye ngokobubanzi be-gap ye-flange, gcwalisa ngqo i-gap ye-flange ngesandla. Cinezela phantsi xa ugcwalisa.
Ukucocwa kunye nokuphathwa kwendawo ye-flange enkulu yobubanzi. Susa umhlwa kwi-flange clearance kunye nezikrufu ngebrashi; Coca i-flange clearance ngomoya ocinezelweyo; Ukuba i-remover yeekhemikhali isetyenzisiweyo, vavanya ukuba isisusi sekhemikhali siya kuchaphazela isitywina se-flange.
Ukuba uyathandabuza, kucetyiswa ukuba ungasebenzisi iindlela zekhemikhali; Sula umphezulu weflange ngesanti okanye umsonto womqhaphu ukuhlangabezana nemigangatho ye-ST2.