Idizayini kanye Namazinga Okusebenza we-American Standard Cast Steel Globe Valves

Idizayini kanye Namazinga Okusebenza we-American Standard Cast Steel Globe Valves

Ezinhlelweni zamapayipi ezimboni, amavalvu eglobhu ensimbi ajwayelekile aseMelika aziwa kabanzi ngokuqina kwawo okuhle kakhulu nokuthembeka. Le valve yakhiwe futhi yakhiwe ngokuqinile ngokuhambisana nemininingwane esungulwe yi-American National Standards Institute (ANSI) kanye ne-American Petroleum Institute (API). Okulandelayo kuzohlinzeka ngohlaziyo oluningiliziwe lwezimpawu zokuklama zamavalvu eglobhu ensimbi ajwayelekile yaseMelika kanye namazinga okusebenza awalandelayo.

Izici zokuklama

1. Ukukhethwa kwezinto ezibonakalayo: Ama-valve eglobhu ensimbi ajwayelekile yaseMelika ajwayele ukuphonswa kusetshenziswa insimbi ecacisiwe ye-ASTM, njenge-ASTM A126 grade WCB (i-carbon steel castings), ukuze kuqinisekiswe ukuthi i-valve inamandla amahle emishini kanye nokumelana nokugqwala.
2. Idizayini yokuvala: Isihlalo se-valve kanye nediski kuklanywe ngendlela efaniswe kahle ne-conical noma eyindilinga yokuvala uphawu ukuze kuqinisekiswe ukuvimbela okuphumelelayo kokuvuza okuphakathi esimweni esivaliwe futhi kufinyelele umphumela wokuvala oqinile.
3. Idizayini ye-valve stem anti blowout: Ukuvimbela isiqu se-valve ekuqhunyisweni okuphakathi ngesikhathi sokusebenza komfutho ophezulu, ivalvu yeglobu yensimbi evamile yaseMelika iklanywe ngethuluzi elivimbela ukuphuma, elithuthukisa ukuphepha kwevalvu.
4. Idizayini yokuphepha komlilo: Ngokwezinga lokuphepha komlilo le-API 607, amanye ama-valve e-American standard cast steel globe aklanywe ngezakhiwo eziphikisana nomlilo, ezingagcina ikhono elithile lokuvala ngisho noma kwenzeka umlilo, ukuqinisekisa ukuphepha kwesistimu.
5. I-valve stem seal: Kusetshenziswa ingxenye ye-valve stem seal eshintshwayo, eqinisekisa ukungqubuzana okuphansi ngesikhathi sokuvula nokuvala, futhi kulula ukuyigcina nokuyishintsha.
6. Ukusebenza kwesondo lesandla: Ukuze kube lula ukusebenza okwenziwa ngesandla, amavalvu eglobhu ensimbi ajwayelekile aseMelika ajwayele ukuhlonywa isondo lesandla, futhi usayizi nomklamo wamandla wesondo lesandla uhlangabezana nezidingo ze-ANSI ukuze zisetshenziswe kalula ngumqhubi.

Amazinga okusebenza

1. Isilinganiso sokucindezela: Amavalvu eglobhu ensimbi ajwayelekile aseMelika ahlukaniswa ngokwamazinga afanelekile afana ne-ANSI/ASME B16.34, njenge-Class 150 kanye ne-Class 300, ukuze kuqinisekiswe ukusebenza okuphephile ngaphansi kwengcindezi ehlukene.
2. Ibanga lokushisa: Ngokwebanga lokushisa lezinto ze-ASTM, ama-valve eglobhu ensimbi ajwayelekile aseMelika afanelekela izindawo zokusebenza ezihlukene ukusuka emazingeni okushisa aphansi kuya phezulu.
3. Izinga lokuvuza: Ngokwezinga lokuvuza le-FCI-70-2 (I-Factory Mutual Research), ama-valve eglobhu ensimbi ajwayelekile yaseMelika ahlinzeka ngamazinga ahlukene okusebenza kokuvala ukuze kuhlangatshezwane nezidingo ezihlukene zokufaka isicelo sezimboni.
4. Ukumelana nokugqwala: Ukwakheka kwamakhemikhali kanye nenqubo yokwelashwa kokushisa kwezinto kuhambisana nemithetho ye-ASTM, iqinisekisa ukuthi i-valve isengagcina ukumelana nokugqwala okuhle kwemithombo yezindaba ebolayo.
5. Ukuqinisekiswa Komkhiqizo: Amavalvu eglobhu ensimbi ajwayelekile aseMelika ngokuvamile adinga uchungechunge lwezitifiketi zomkhiqizo, okuhlanganisa ukuhlolwa kwengcindezi, ukuhlolwa kokusebenza, nokuhlola ukumelana nomlilo, ukuze kuqinisekiswe ukuthi ayahlangabezana nezimfuneko zezindinganiso ezifanele.

Kafushane, ama-valve eglobhu ensimbi ajwayelekile aseMelika agxila ekusebenzeni nasekuphepheni ekwakhiweni kwawo, futhi akhiqizwa ngokuhambisana namazinga kazwelonke aseMelika kanye nezinkambiso zemboni ukuze kuqinisekiswe ukusebenza okuzinzile ngaphansi kwezimo zokusebenza ezinzima. Kungakhathaliseki ukuthi kumkhakha we-petroleum, amakhemikhali, igesi yemvelo, noma ezinye izimboni, amavalvu eglobhu ensimbi ajwayelekile aseMelika abonise ukusebenza kwawo okuphezulu nokuthembeka kwawo okuphezulu. Lapho kukhethwa amavalvu anjalo, abasebenzisi kufanele bahlole ngokucophelela izindinganiso abahlangabezana nazo kanye nezidingo zangempela zendawo yokusebenza ukuze baqinisekise ukunemba kokukhetha nokusebenza okuphephile nokuzinzile kwesistimu.