Kuze kube manje, izimo zokusebenzisa i-cryogenic ezidinga ukuvalwa kwe-valve yezindlela ezimbili zisebenzise ikakhulukazi izinhlobo ezimbili zamavalvu, okuyiglobhu namavalvu ebhola angashintshi/amavalvu ebhola agxilile abekwe phezulu.Kodwa-ke, ngokuthuthukiswa okuphumelelayo kwe-valve yebhola ye-cryogenic enezindlela ezimbili, abaklami bohlelo bathole inketho ekhangayo kunama-valve ebhola endabuko-ama-valve ebhola antantayo.Inezinga lokugeleza eliphakeme, alinayo imingcele ekuqondeni kokugeleza kanye nesiqondiso sokuvala se-medium, futhi ingasebenza ngokuphepha ezimweni ze-cryogenic.Futhi ubukhulu buncane, isisindo silula, futhi isakhiwo silula.
Izimo zohlelo lokusebenza lwe-Cryogenic ezidinga ama-valve zifaka phakathi indawo yokungena/yokuphuma kwamathangi okugcina ukuze agcwaliswe futhi akhishwe, ukucindezela amapayipi angenalutho avaliwe, ukufakwa kwegesi kanye nokucwiliswa kotshwala, amapayipi anezinjongo eziningi zezinhlelo ezahlukahlukene eziteshini zokugcina ze-LNG, izinhlelo zokuthumela, kanye namathangi, Izinhlelo Zokusabalalisa, ukupompa. iziteshi kanye neziteshi zokugcwalisa uphethiloli ze-LNG, kanye namasethi amavalvu egesi yemvelo (GVUs) ahlobene nezinjini zamafutha akabili emikhunjini.
Kulezi zimo zohlelo ezishiwo ngenhla, ama-valve avala indlela emibili ngokuvamile asetshenziselwa ukulawula nokuvala uketshezi oluphakathi nendawo.Uma kuqhathaniswa nezinye izinhlobo ezifanaama-valve ebhola, banezinkinga ezimbalwa:
I-flow coefficient (Cv) iphansi-lokhu kuzothinta ukukhethwa kwabo bonke osayizi bamapayipi abafanelekile futhi kuzoba umgoqo ongase ukhawule umthamo wokugeleza wesistimu.
· Isidingo sokumisa ama-actuator amugqa ukuze enze imisebenzi yokuvala nokulawula-uma kuqhathaniswa nama-rotary actuator angunxande asetshenziselwa ukulawula nokusebenzisa ama-valve amabhola namanye ama-rotary valves angama-rectangular, lolu hlobo lwesisetshenziswa sinesakhiwo esiyinkimbinkimbi futhi siyabiza.Izindleko nobunkimbinkimbi besakhiwo sesethi ephelele yamavalvu nemishini ye-actuator kugqame kakhulu.
· Uma i-valve yokuvala isetshenziselwa ukubona umsebenzi wokuvala shaqa izimo eziphuthumayo odingwa amasistimu amaningi e-LNG, ubunzima buyoba phezulu nakakhulu.
Ezindaweni ezincane ze-LNG (SSLNG), izinkinga ezingenhla zizoba sobala kakhulu, ngoba lezi zinhlelo kufanele zibe zincane, zingabizi kakhulu, futhi zibe nomthamo omkhulu wokugeleza ukuze kufinyezwe umjikelezo wokulayisha nokulayisha.
I-flow coefficient ye-valve yebhola iphakeme kunaleyo ye-valve yembulunga enosayizi ofanayo.Ngamanye amazwi, mancane ngosayizi ngaphandle kokuthinta izinga lokugeleza.Lokhu kusho ukuthi ubukhulu, isisindo kanye nezindleko zalo lonke uhlelo lwamapayipi ngisho nalo lonke uhlelo lwehle kakhulu.Ngesikhathi esifanayo, ingakhuphula kakhulu imbuyiselo yokutshalwa kwezimali (ROI) yezinhlelo ezihlobene.
Yiqiniso, ama-valve ebhola e-cryogenic antantayo ayindlela eyodwa, engafanele izimo ezibalulwe ngenhla ezidinga ukuvala uphawu lwe-valve yezindlela ezimbili.
Indlela Eyodwa Vs Indlela Embili
Njengoba kuboniswe kuMfanekiso 1, i-valve yebhola elintantayo evamile yezimo ze-cryogenic inembobo yokukhulula ingcindezi ohlangothini oluphezulu lomfula webhola le-valve ukuvimbela ukucindezela ukuthi kuqongelele futhi kukhuphuke lapho okuphakathi kushintshana nesigaba.Lapho i-valve isendaweni evaliwe, igesi yemvelo ewuketshezi ebiyelwe emgodini womzimba we-valve izoqala ukuhwamuka futhi yandise, futhi ivolumu ingafinyelela izikhathi ezingama-600 kunomthamo wokuqala ngemuva kokunwetshwa ngokugcwele, okungase kubangele ukuthi i-valve iqhume. .Ukuze kuvinjwe lesi simo, amavalvu amaningi ebhola elintantayo asebenzise indlela yokusiza ingcindezi yokuvula phezulu.Ngenxa yalokhu, ama-valve ebhola endabuko awakwazi ukusetshenziswa ezimeni ezidinga ukubekwa uphawu okubili.
Futhi lesi yisiteji lapho i-valve ye-cryogenic float ball valve enezindlela ezimbili ingabonisa amathalenta ayo.Umehluko phakathi kwale valve kanye ne-valve yendlela eyodwa ye-cryogenic yile:
· Akukho ukuvuleka ebholeni levalvu ukukhulula ingcindezi
• Ingakwazi ukuvala uketshezi nhlangothi zombili
· Akukho ukuvuleka ebholeni levalvu ukukhulula ingcindezi
• Ingakwazi ukuvala uketshezi nhlangothi zombili
Ku-valve yebhola entantayo enezinhlangothi ezimbili, isihlalo se-valve esilayishwe entwasahlobo esinezinhlangothi ezimbili sithatha indawo yomshini wokukhulula umfutho wokuvula umfula.Isihlalo se-valve esilayishwe entwasahlobo singakhulula ingcindezi eyeqile ekhiqizwa igesi yemvelo ewuketshezi ebiyelwe emgodini womzimba we-valve, ngaleyo ndlela ivimbele ukuthi i-valve ingaqhumi, njengoba kuboniswe kuMfanekiso 2.
Ngaphezu kwalokho, isihlalo se-valve esilayishwe entwasahlobo sisiza ukugcina i-valve ku-torque ephansi futhi ifinyelele ukusebenza okushelelayo ezimweni ze-cryogenic.
I-valve ye-cryogenic float ball valve ifakwe indandatho yesigaba sesibili sokuvala i-graphite, ukuze i-valve ibe nomsebenzi wokuphepha komlilo.Ngaphandle uma ingozi eyinhlekelele ibangela ukuthi izingxenye ze-polymer zevalvu zishise, uphawu lwesibili ngeke luhlangane nendawo.Uma kwenzeka ingozi, uphawu lwezinga lesibili luzofeza umsebenzi wokuvikela ukuphepha komlilo.
Izinzuzo zama-valve anezindlela ezimbili
Uma kuqhathaniswa nama-valve embulunga, ama-valve ebhola agxilile nabekwe phezulu, i-valve yebhola entantayo enezinhlangothi ezimbili inazo zonke izinzuzo ze-high flow coefficient ball valve, futhi akukho mingcele endleleni yoketshezi nokuvala.Ingasetshenziswa ngokuphepha ezimweni ze-cryogenic;ubukhulu buncane futhi isakhiwo silula.I-actuator efanayo nayo ilula ngokuqhathaniswa (i-engeli yesokudla) futhi yenziwe i-miniaturized.Lezi zinzuzo zisho ukuthi yonke isistimu incane, ilula, futhi iyonga kakhulu.
Uma kuqhathaniswa nama-valve embulunga, ama-valve ebhola agxilile nabekwe phezulu, i-valve yebhola entantayo enezinhlangothi ezimbili inazo zonke izinzuzo ze-high flow coefficient ball valve, futhi akukho mingcele endleleni yoketshezi nokuvala.Ingasetshenziswa ngokuphepha ezimweni ze-cryogenic;ubukhulu buncane futhi isakhiwo silula.I-actuator efanayo nayo ilula ngokuqhathaniswa (i-engeli yesokudla) futhi yenziwe i-miniaturized.Lezi zinzuzo zisho ukuthi yonke isistimu incane, ilula, futhi iyonga kakhulu.
Ithebula 1 liqhathanisa i-valve yebhola elintantayo elinezinhlangothi ezimbili namanye ama-valve anemisebenzi efanayo ngokombono wokugcinwa, ubukhulu, isisindo, izinga le-torque, ubunzima bokulawula, kanye nezindleko eziphelele, futhi lifingqa ngokuningiliziwe izinzuzo nezingozi zalo.
Uma indawo encane ye-LNG iphula umhlangano futhi yamukela i-valve yebhola ye-cryogenic enezinhlangothi ezimbili, inganikeza ukudlala ngokugcwele izinzuzo eziyingqayizivele ze-valve yebhola, okungukuthi, ububanzi obugcwele, izinga lokugeleza okuphezulu kanye nezinga eliphezulu lokukhishwa kwamapayipi.Uma kuqhathaniswa, ingakwazi ukusekela amapayipi kasayizi omncane kuyilapho igcina izinga lokugeleza elifanayo, ngakho-ke ingakwazi ukunciphisa isamba sevolumu, isisindo, kanye nobunkimbinkimbi besistimu, futhi inganciphisa izindleko zesistimu yamapayipi.
Isihloko esandulele sethule izinzuzo zokusetshenziswa njenge-valve yokuvala.Uma isetshenziswa njenge-valve yokulawula, izinzuzo zizoba sobala kakhulu.Uma i-valve ye-rotary ye-right-angle isetshenziswa, ubunzima bekhithi ye-automation kit izoncishiswa kakhulu, ngakho-ke isibe yinto yokuzikhethela yesistimu ye-cryogenic.
Okuqukethwe okuyisisekelo kakhulu kwekhithi ezenzakalelayo eshiwo ngenhla iyi-valve yebhola entantayo enezinhlangothi ezimbili elula nesebenzayo, kanye ne-actuator ejikelezayo engunxande enesakhiwo esilula nokusebenza kahle kwezindleko eziphezulu.
Ngamafuphi, i-valve yebhola le-cryogenic le-cryogenic floatball enezinhlangothi ezimbili inokubaluleka okuhle “kokubhidliza” ohlelweni lwepayipi le-cryogenic.Ezikhungweni ezincane ze-LNG, inganikeza ukudlala okugcwele ezinzuzweni zayo.
Eminyakeni embalwa edlule, lo mkhiqizo omusha uye waqinisekiswa ekusebenzeni okungokoqobo, okufakazela ukuthi unokubaluleka okuhle ngezindleko zephrojekthi kanye nokusebenza okuthembekile kwesikhathi eside kohlelo.
Isikhathi sokuthumela: Jun-17-2021