Mwayi wogulitsira ma valve umachokera ku mitundu iwiri yayikulu ya ntchito: wellhead ndi pipeline. Yoyamba nthawi zambiri imayendetsedwa ndi API 6A Specification ya Wellhead ndi Christmas Tree Equipment, ndipo yomaliza ndi API 6D Specification ya Pipeline ndi Piping Valves.
Mapulogalamu a Wellhead (API 6A)
Mwayi wogwiritsa ntchito ma wellhead ukuyembekezeka kwambiri kutengera Baker Hughes Rig Count yomwe imapereka chiŵerengero chotsogola cha makampani opanga mafuta ndi gasi. Chiŵerengerochi chinakhala chabwino mu 2017, ngakhale kuti chinali ku North America kokha (onani Tchati 1). Chigawo cha chitsime chodziwika bwino chimaphatikizapo ma valvu asanu kapena kuposerapo omwe amakwaniritsa API Specification 6A. Ma valvu amenewa nthawi zambiri amakhala ang'onoang'ono kuyambira 1” mpaka 4” pa ma wellhead a m'mphepete mwa nyanja. Ma valvuwo akhoza kukhala ndi valavu yayikulu ya pamwamba ndi pansi yotsekera chitsime; valavu ya phiko lophera kuti alowetse mankhwala osiyanasiyana kuti awonjezere kuyenda kwa madzi, kukana dzimbiri, ndi zina; valavu ya phiko lopangira kuti atseke/kupatula mutu wa chitsime kuchokera ku dongosolo la mapaipi; valavu yotsekeka kuti ichepetse kuyenda kwa madzi kuchokera pachitsime; ndi valavu yosambira pamwamba pa mtengo kuti mulowe m'chitsime cholowera.Ma valve nthawi zambiri amakhala a mtundu wa chipata kapena mpira ndipo amasankhidwa makamaka kuti azimitsidwa mwamphamvu, asagwere ndi kukokoloka kwa madzi, komanso asagwere dzimbiri zomwe zingakhale zodetsa nkhawa kwambiri ndi zinthu zopanda mafuta kapena mpweya wowawasa zomwe zili ndi sulfure yambiri. Tiyenera kudziwa kuti kukambirana komwe kwatchulidwaku sikukuphatikizapo ma valve a pansi pa nyanja omwe ali ndi mikhalidwe yovuta kwambiri yogwirira ntchito komanso omwe akuchedwa kubwereranso pamsika chifukwa cha mtengo wokwera wa kupanga pansi pa nyanja.
Nthawi yotumizira: Mar-27-2018