Yintoni isiseko sokuphumeza ukutywinwa kwevalve yebhola?

Ukutywinwa kweiivalve zebholaubukhulu becala ixhomekeke kukulingana okuqinileyo phakathi kwebhola kunye nesitulo sevalve. Umgaqo wokutywina kunye nendlela yokuphunyezwa koku kulandelayo:

Isakhiwo sokutywina seivalve yebholaijikeleza kuyilo lokulingana phakathi kwebhola kunye nesitulo sevalve. Xa ivalve yebhola ikwimeko evaliweyo, umngxuma wokutyhutyha webhola u-perpendicular kumgca osembindini wazo zombini iziphelo zomzimba wevalve, kwaye umphezulu webhola unxibelelene ngokusondeleyo nomgangatho wokutywina wesihlalo sevalve ukwenza umqobo wokutywina, ukuthintela ukuvuza okuphakathi. Ngokwezixhobo zokutywina ezahlukeneyo, iivalve zebhola zinokwahlulwa zibe ziindidi ezimbini: izitywina ezinzima kunye nezitywina ezithambileyo. Iivalvu zebhola eqinileyo zisebenzisa intsimbi (enjengentsimbi engatyiwa, ingxubevange eqinileyo) njengesixhobo sokutywina, kwaye zifezekiseke ngokutywinwa ngoomatshini okanye ukulayishwa kwentwasahlobo phakathi kweentsimbi. Zifanele ubushushu obuphezulu, uxinzelelo oluphezulu, kunye neendawo ezinobungozi kakhulu zeendaba; Iivalvu zebhola ezithambileyo ezitywiniweyo zenziwe ngezinto ezilastiki ezifana nerabha kunye ne-polytetrafluoroethylene (PTFE), ezisebenzisa uxinzelelo oluphakathi ukwenza uguquko olulastiki lwemathiriyeli ethambileyo, ngaloo ndlela ibambelela ngokuqinileyo kumphezulu webhola ukwenza itywina. Benza kakuhle phantsi koxinzelelo oluphantsi kunye neemeko zokushisa kwegumbi.

Ukusebenza kokutywinwa kweiivalve zebholauchatshazelwa zizinto ezininzi. Ukuqina, ukuxhathisa ukunxiba, kunye nokumelana nokubola kwezinto zokutywina kuchaphazela ngqo ubomi bokutywinwa. Ngokomzekelo, ukuqina komphezulu weendawo zokutywina zetsimbi kufuneka kuphuculwe ngeenkqubo ezifana nokutshiza i-alloys eqinile okanye i-laser cladding; Ngokumalunga nokuchaneka kokucubungula, iiparamitha ezinjengobungqukuva kunye nokutywinwa koburhabaxa bomphezulu kufuneka kulawulwe ngokungqongqo, kunye noburhabaxa bendawo yokutywina iRa value idla ngokufuneka ukuba ≤ 0.8 μ m; Umgangatho weNdibano ubaluleke ngokulinganayo, ulawulo olungafanelekanga lwamandla okulayisha kwangaphambili kunokukhokelela ekunxityweni okugqithisileyo okanye ukuvuza komphezulu wokutywina. Ukongezelela, iimpawu ze-medium (ezifana nokugqwala, ukushisa, uxinzelelo) kunye neemeko zokusebenza (ezifana nokuvula nokuvala isantya) nazo zinokuba nefuthe elibalulekileyo kwisiphumo sokutywinwa.

Ukugcina ukusebenza kokutywinwa kwe-valve yebhola, kuyimfuneko ukujonga rhoqo ukunxiba kwendawo yokutywina, ukucoca ukungcola ngexesha elifanelekileyo ukukhusela imikrwelo, kunye ne-lubricate iindawo ezihambayo ezifana ne-valve stem. Ukukhetha izakhiwo zokutywinwa ezifanelekileyo kunye nezixhobo zeemeko zokusebenza ezahlukeneyo, ezifana nokusebenzisa iivalve zentsimbi eziqinileyo zokutywina kwiindawo ezinobushushu obuphezulu kunye nefluorine okanye i-ceramic coating coating surfaces kumajelo atshabalalisayo, inokwandisa ngokufanelekileyo ubomi benkonzo yeevalvu zebhola kunye nokuqinisekisa ukuthembeka kokutywinwa.