Iivalve ze-Cryogenic zisetyenziswa ngokubanzi kwimimandla yesichumisi, i-LNG kunye ne-petrochemical industry. Ngaphandle kwenitrogen engamanzi kunye nezinye iigesi ze-inert ezingamanzi, uninzi lwemithombo yeendaba elawulwayo ayinakutsha kuphela kwaye iyaqhuma, kodwa i-gasification iyenzeka xa ishushu okanye idanyazwe. , Okubangela ukwanda ngokukhawuleza komthamo, kulula ukubangela ukuvuza kunye nokuqhuma. Kushishino, iivalvu ezisetyenziswa kubushushu obuphakathi ngaphantsi kwe -40 ℃ ngokuqhelekileyo zibizwa ngokuba ziivalve ze-cryogenic, kunye neevalvu ezisetyenziswa kubushushu obuphakathi ngaphantsi kwe-101 ℃ zibizwa ngokuba ziivalve zeqondo eliphantsi kakhulu.
Ukukhethwa kwezinto eziphathekayo kwiivalvu ze-cryogenic:
Iimpawu zomatshini zentsimbi kwiqondo lokushisa eliphantsi zihluke kwiqondo lokushisa. Ukongeza kumandla, ukuqina kwefuthe eliphantsi lobushushu yisalathisi esibaluleke kakhulu kwintsimbi ephantsi yobushushu. Ubushushu obuphantsi bempembelelo yokuqina kwesixhobo bunxulumene nobushushu obuguquguqukayo benguqu yento. Okukhona usezantsi ubushushu benguqu ye-brittle yemathiriyeli, kokukhona ubushushu obuphantsi befuthe lokuqina kwemathiriyeli. Izixhobo zetsimbi ezine-cubic lattice ezigxile kumzimba ezifana nentsimbi yekhabhoni zinobushushu obuphantsi obubandayo, ngelixa izixhobo zetsimbi ezinobuso obuphakathi kwecubic lettice ezifana ne-austenitic stainless steel azinampembelelo kwimpembelelo yokuqina kobushushu obuphantsi.
Umzimba wevalve yobushushu obuphantsi, ibhonethi kunye nezinye iindawo ezikwaziyo ukumelana noxinzelelo zihlala zenziwe ngezinto ezinamandla obushushu obuphantsi kunye nokuqina. Kwangaxeshanye, izinto ezinje nge-weldability, machinability, uzinzo kunye noqoqosho kufuneka ziqwalaselwe.
Xa uyila, amanqanaba amathathu obushushu obuphantsi -46℃, -101℃ kunye -196℃ asetyenziswa ngokuqhelekileyo. Ubushushu obuphantsi bentsimbi yekhabhoni isetyenziselwa ngokubanzi -46 ℃ inqanaba lobushushu obuphantsi, kunye ne-300 series i-austenitic stainless steel isetyenziswa ngokubanzi kwi--101 ℃ kunye ne-196 ℃ ibakala lobushushu obuphantsi. Le nsimbi engenasici inamandla aphakathi, ukuqina okulungileyo kunye nokusebenza kakuhle kokusebenza.
Ixesha lokuposa: Mar-18-2024