Kutheni iiValve zeMveliso zibalulekile kwizicelo zemizi-mveliso
Kwimizi-mveliso emininzi egxile kwinkqubo, ivalvu ayisiyonto nje yokulawula ukuhamba kwamanzi—yinto yokhuseleko esebenzayo. Nokuba kukucoca i-petrochemical, ukuthuthwa kwegesi, okanye iinkqubo zokucoca amanzi ezinzima, ukusebenza kwevalvu kuxhomekeke kakhulu kumacandelo ayo: umzimba, isiqu, isihlalo, kunye nokudibanisa konke kunegalelo ekuqineni nasekuthembekeni kokutywina.
Iivalvu ezisemgangathweni, nangona zifumaneka ngokubanzi, zihlala zingaphumeleli kwiimeko zokusebenza ezinzima. Xa ukulinganiswa koxinzelelo, amandla okuhamba, kunye nemidiya erhabaxa yahluka ukusuka kwiprojekthi ukuya kwiprojekthi, izisombululo ezisebenza ngexesha elithile zinokuzisa iingozi ezingafunekiyo—ingakumbi kwimisebenzi apho ixesha lokungasebenzi lithetha ilahleko enkulu yemali.
Kulapho izinto zevalvu ezenziwe ngokwezifiso zibonelela ngeenzuzo ezahlukeneyo. Eziyilwe ngokweemeko ezithile zokusebenza, iindawo ezenziwe ngokwezifiso zinokufaniswa ngokuchanekileyo noluhlu loxinzelelo lwenkqubo, uhlobo lwemidiya, kunye nejometri yokufakela. Umzekelo, isiqu sevalvu esisetyenziswa kwindawo enegesi enesulfure ephezulu sinokufuna ukukhethwa kwezinto ezahlukeneyo—ezifana ne-17-4PH okanye i-Inconel—xa kuthelekiswa nesiqu esisetyenziswa kwimigca yamanzi acocekileyo anoxinzelelo oluphantsi.
Ukukhethwa kwezinto zevalvu, ukusuka kwi-WCB carbon steel ukuya kwi-CF8M stainless okanye i-Duplex alloys, kukwachaphazela ukumelana nokugqwala, uzinzo lobukhulu, kunye nomjikelo wobomi. Ngaphezu koko, ukukwazi ukuchaza unyango lomphezulu—njengokuqhumisa isanti, ukuthambisa, okanye ukunitha—kwongeza olunye ulalo lolawulo ekwenzeni ngcono ubude bexesha levalvu.
Umzi-mveliso wethu usebenze nabahlanganisi beenkqubo, ii-OEM, kunye neekontraka ze-EPC kangangeminyaka engaphezu kwamashumi amabini ukubonelela ngezinto zevalvu ezenziwe ngokwezifiso ezenzelwe ukusebenza kwentsimi ixesha elide. Icandelo ngalinye levalvu lenziwe ngokujonga ukunyamezelana kobukhulu kunye nokuthembeka koomatshini, ukuqinisekisa ukulingana okuqinileyo ngaphakathi kwendibano epheleleyo. Kwiivalvu eziqhutywayo, sikwabonelela ngee-couplings kunye neebrackets ezichanekileyo ukuqinisekisa ukulungelelaniswa phantsi kweemeko eziguqukayo.
Kwiimeko ezininzi, iinjineli ziza kuthi xa ivalvu engenisiweyo isilela ngaphambi kwexesha—kungengenxa yomgangatho ophantsi, kodwa ngenxa yokuba inxalenye encinci yayingahambelani nenkqubo eyayifakwe kuyo. Iindawo zevalvu ezenziwe ngokwezifiso, ezakhiwe ngendlela yokuzoba okanye ezenziwe ngobuchule obuvela ngasemva, zivumela ukutshintshwa ngokuchanekileyo ngaphandle kokuphazamisa ukusebenza okanye ulawulo lokuhamba kwamanzi.
Ukukhetha umthengisi wecandelo levalvu elenziwe ngokwezifiso akupheleli nje ekuchanekeni komatshini. Kukwamalunga nokuqonda indlela ivalvu eziphatha ngayo phantsi koxinzelelo—ukwanda kobushushu, ukunyuka koxinzelelo, okanye imidiya erhabaxa—kunye nendlela utshintsho oluncinci kwijiyometri yecandelo olunokusombulula ngayo iingxaki eziphindaphindayo kwicandelo.
Nokuba yinkqubo ye-LNG enobushushu obuphantsi okanye iluphu yomphunga enoxinzelelo oluphezulu, ukutyala imali kwizinto zevalvu ezilungele wena kunika indlela ethembekileyo yokunciphisa ukuvalwa, ukusebenza okukhuselekileyo, kunye nokuphucula iindleko zizonke zobunini.