Iingongoma eziphambili zeenkcukacha zokufakwa kwevalvu yepayipi

I. Ukulungiselela kwangaphambili kokufakwa

1. Jonga imodeli yeenkcukacha zevalvu, inqanaba loxinzelelo, kunye nokuchonga indlela yokuhamba kwamanzi ukuqinisekisa ukuba iyahlangabezana neemfuno zoyilo.

2. Jonga ukucoceka komngxuma womzimba wevalvu uze ususe izinto zokukhusela zokupakishwa kunye nezinto zangaphandle.

3. Iivalvu zoqhagamshelo lwe-Butt welding kufuneka zenziwe ngee-grooves, kwaye iivalvu zoqhagamshelo lwe-flange kufuneka zijonge ukuthembeka komphezulu wokuvala.

II. Ulawulo lweZikhokelo zoFakelo

1. Ivalvu yeglobhu kunyeivalvu yokujonga ukuphakama okuthe nkqokufuneka ifakwe ngokungqongqo kwicala eliboniswe lutolo olukwi-valve body.

2. Ngokomgaqo,ivalvu yesiqu esinganyukiyo, ivalvu yebhabhathane yohlobo lwamanzi, kwaye iivalvu zebhola zingafakwa kuzo zombini iindlela, kodwa kufuneka kuqwalaselwe lula ukusebenza.

3. Iivalvu zombane/zomoya kufuneka zigcine indawo yokusebenza kunye nokugcinwa kwe-actuator.

III. Iinkcukacha zoFakelo lweWelding

1. Ivalvu yokuwelda yempundu kufuneka ihlale ivulekile ngexesha lokuwelda ukuthintela ukuxinana okubangelwa kukuguquka kobushushu.

2. Sebenzisa i-argon arc welding ukwenza isiseko, kwaye ulawule ubushushu be-interlayer ukuba bungadluli kubushushu obulinganisiweyo bevalvu.

3. Emva kokuwelda, ivalvu kufuneka ivavanywe ngendlela esebenza ngayo ukuqinisekisa ukuba iyavula kwaye ivala ngokwesiqhelo.

IV. Amanqaku aPhambili oQhagamshelo lweFlange

1. Imiphezulu yokutywina iflange ihlala ihambelana, kwaye ukuphambuka okuphezulu okuvumelekileyo akudluli kwi-0.15% yobubanzi bangaphandle beflange.

2. I-gasket kufuneka ibekwe embindini, iibholithi maziqiniswe ngokulinganayo nangokulinganayo, kwaye i-torque elinganisiweyo kufuneka ifikelelwe kathathu.

3. Iibholithi ezidibanisa iivalvu ezishushu kakhulu kufuneka ziqiniswe kabini xa zishushu.

V. Ulawulo loMgangatho

1. Uvavanyo lokuqina kunye novavanyo lokutywina ziyafuneka emva kokufakwa.

2. Xa uhlamba inkqubo, ivalvu yokulawula, imitha yokuhamba kwamanzi kunye nezinye izixhobo kufuneka zidlule.

3. Gcwalisa irekhodi lokufakela, kuquka idatha ebalulekileyo efana nenombolo yendawo yevalvu, uxinzelelo lovavanyo, i-torque yokusebenza, njl.

Qaphela: Ivalvu akufuneki isetyenziswe njengendawo yokuxhasa umbhobho. Iivalvu ezinkulu zifuna isakhelo sokuxhasa esahlukileyo. Emva kokufakelwa, ivalvu kufuneka ivalwe ngokupheleleyo kwaye ikhuselwe ukuze kuthintelwe umonakalo onokwenzeka xa kudityaniswa ipayipi.