Izinto zokubopha isibili, ikhwalithi yokubopha isibili, ingcindezi ethile yokubopha, kanye nezici zomzimba ze-medium kumane nje kungenye yezinto eziningi ezingathinta ukuthi i-cryogenic ibukeka kanjani.amavalvu ebholauphawu. Ukusebenza kahle kwevalvu kuzothinteka kakhulu yilezi ziguquguquko. Ithonya. Ukuqinisekisa ukusebenza njalo kwevalvu, kufanele yakhelwe kucatshangelwa ithonya lalezi zici ngangokunokwenzeka.

Izinto zokuvala

Amathuba ezinto zokuvala angase aphazamiseke emazingeni okushisa aphansi kudingeka acatshangelwe. Into yensimbi izoncipha futhi iguquguquke njengoba izinga lokushisa lehla, okudala igebe esivalweni kanye nokwehla kwengcindezi ethile yesivaliso, okuzothinta ukusebenza kokuvala. Ngakho-ke, kubalulekile ukukhetha into yokuvala efanele ngenkathi uthuthukisa isakhiwo sokuvala ukuze uvikele ukuvala. Ukuze kuncishiswe ukungqubuzana lapho ivalvu ivulwa futhi ivalwa futhi kwandiswe impilo yevalvu, kanye nokunciphisa izindleko nokuthuthukisa ukusebenza kokuvala, indlela yokuvala ethambile, ehlanganisa izinto zensimbi nezingezona ezensimbi, ivame ukusetshenziswa ezimweni zokusebenza ze-LNG. Njengoba i-polytetrafluoroethylene izokhiqiza ukugeleza okubandayo emazingeni okushisa aphansi, ayifanele ukusetshenziswa, kuyilapho i-polytrifluorochloroethylene inamandla okuvala kungakhathaliseki uhlobo loketshezi olusebenzayo olusetshenziswa kulo.

Ikhwalithi yesibili yokuvala

Ikhwalithi yokucubungula ubuso be-sphere kanye nobulukhuni bobuso bokuvala kuyizinkomba ezinkulu zekhwalithi ye-sealing pair. I-torque edingekayo ukuvula nokuvala i-valve ingancishiswa, impilo yesevisi ye-valve ingandiswa, futhi ukusebenza kokuvala kwe-valve kungathuthukiswa ngokwenza i-sphere ibe yindilinga kakhulu futhi ibushelelezi ebusweni bayo. Ngakho-ke, kubalulekile ukuthuthukisa ikhwalithi yokucubungula ubuso be-sealing pair ngesikhathi sokuklama.

Vala ingcindezi ethile

Ingcindezi esetshenziswa endaweni yokuvala nge-intshi yesikwele yaziwa ngokuthi ingcindezi ethile yokuvala. Ukusebenza kahle kokuvala, ukuthembeka, kanye nesikhathi sokuphila kwevalvu yebhola konke kuthinteka ngqo ngobukhulu bengcindezi ethile yokuvala. Kodwa-ke, ingcindezi ethile yokuvala ibhola levalvu ayiphezulu njengoba ingase ibe njalo. Kwezinye izimo, ingcindezi ephezulu yokuvala iyasiza ekuvaleni, kodwa njengoba ingcindezi ethile yokuvala ikhuphuka, i-torque edingekayo ukuze kusebenze ivalvu nayo izokhuphuka, okuyinto engalungile ekuvaleni. Ivalvu isebenza ngokujwayelekile. Ngakho-ke, enye ingxenye ebalulekile yomklamo wokuvala wokushisa okuphansi kakhuluamavalvu ebholaukukhetha kokucindezela okuthile kokuvala.

izakhiwo zomzimba ze-medium

I-seal izothinteka ngezinga elithile yizici zomzimba ze-medium, njengokuthamba kwayo kanye nokushisa. Okokuqala, ukungena kwe-medium kwehla ngokuthamba okwandayo, okwenza kube nzima ukuvuza. Izimo zokushisa eziphansi zenzeka lapho izinga lokushisa le-medium linomthelela omkhulu ku-seal. Ukuvuza kubangelwa ukuguqulwa kwesakhiwo sokuvala okubangelwa ushintsho losayizi lwezingxenye ezithile zokuvala. I-seal izobhujiswa ngesikhathi esifanayo nokushintsha kwengcindezi yokuvala yendawo yokuvala. Ngenxa yalokho, umphumela wokushisa kumele ucatshangelwe lapho kwakhiwa isakhiwo sokuvala.