I-sealing surface iyindawo yokusebenza ebaluleke kakhului-valve, ikhwalithi yendawo yokubeka uphawu ithinta ngokuqondile impilo yesevisi ye-valve, futhi impahla yendawo yokuvala iyisici esibalulekile sokuqinisekisa ikhwalithi yendawo yokubeka uphawu. Ngakho-ke, izici ezilandelayo kufanele zicatshangelwe lapho kukhethwa izinto ezingaphezulu zokuvala ama-valve:
① Ukumelana nokubola.
Ngaphansi kwesenzo se-medium, indawo yokubeka uphawu iyabhujiswa. Uma indawo yobuso yonakele, ukusebenza kokuvala akunakuqinisekiswa. Ngakho-ke, impahla engaphezulu yokuvala kufanele imelane nokugqwala. Ukumelana nokugqwala kwezinto ezisetshenziswayo ikakhulukazi kuncike ezintweni zazo nokuzinza kwamakhemikhali.
② Ukumelana nokuklwebheka.
"Ukuklwebha" kubhekise emonakalweni odalwe ukuklwebhana ngesikhathi sokunyakaza okuhlobene kwendawo yokuvala. Lolu hlobo lomonakalo nakanjani luzodala umonakalo endaweni evalekayo. Ngakho-ke, indawo yokuvala uphawu kufanele ibe nokumelana okuhle nokuklwebheka, ikakhulukazi i-valve yesango. Ukumelana nokuklwebheka kwezinto ngokuvamile kunqunywa izakhiwo zangaphakathi zezinto.
③ Ukumelana nokuguguleka.
"Ukuguguleka" inqubo lapho indawo yokuvala ichithwa khona lapho okuphakathi kugeleza endaweni yokuvala ngesivinini esikhulu. Lolu hlobo lomonakalo lubonakala ngokucacile ku-valve ye-throttle kanye ne-valve yokuphepha esetshenziswa ekushiseni okuphezulu kanye ne-high pressure steam medium, okunomthelela omkhulu ekusebenzeni kokuvala. Ngakho-ke, ukumelana nokuguguleka kungenye yezidingo ezibalulekile zokuvala izinto ezingaphezulu.
④ Kufanele kube nezinga elithile lobulukhuni, futhi ubulukhuni buzokwehla kakhulu ngaphansi kwezinga lokushisa elishiwo lokusebenza.
⑤ I-coefficient yomugqa yokunweba yendawo yokuvala kanye nempahla yomzimba kufanele ifane, ebaluleke kakhulu esakhiweni se-inlaid.indandatho yokuvala, ukuze ugweme ukucindezeleka okwengeziwe kanye nokuxega ngaphansi kwezinga lokushisa eliphezulu.
⑥ Uma isetshenziswa ezingeni lokushisa eliphezulu, kufanele ibe nokumelana ne-oxidation okwanele, ukumelana nokukhathala okushisayo kanye nomjikelezo wokushisa.
Esimweni samanje, kunzima kakhulu ukuthola izinto ezingaphezulu zokuvala ezihlangabezana ngokugcwele nezidingo ezingenhla. Singagxila kuphela ekuhlangabezaneni nezidingo zezici ezithile ngokuya ngezinhlobo zama-valve ahlukene kanye nezicelo. Isibonelo, i-valve esetshenziswa endaweni enesivinini esikhulu kufanele inake ngokukhethekile izidingo zokumelana nokuguguleka kwendawo yokuvala; lapho i-medium iqukethe ukungcola okuqinile, into engaphezulu yokuvala enobunzima obuphakeme kufanele ikhethwe.
Isikhathi sokuthumela: Feb-23-2022