Iivalvu zebholaesetyenziswa kwimibhobho yerhasi yendalo ngamacandelo aphambili okuqinisekisa uthutho olukhuselekileyo nolusebenzayo lwerhasi yendalo. Phakathi kweentlobo ezahlukeneyo zeevalve zebhola, iivalve zebhola ze-trunnion zezona ziqhelekileyo zisetyenziswa kwizicelo ezinjalo. Ukuqonda imigaqo yoyilo lweevalvu zebhola yegesi yendalo, ngakumbi iivalvu zebhola ze-trunnion, kubaluleke kakhulu kwiinjineli kunye nabaqhubi kwishishini lamandla.
Ulwakhiwo kunye noMsebenzi
Ivalve yebhola ejikelezayo esisigxina inengqukuvaidiskhi yevalvu (okanye ibhola)ejikeleza malunga ne-axis esisigxina ukulawula ukuhamba kwegesi yendalo. Ivalve yenzelwe ukuvumela okanye ukuthintela ukuhamba kwegesi ngokuxhomekeke kwindawo yebhola. Xa umngxuma webhola uhambelana nombhobho, igesi inokuhamba ngokukhululekileyo; xa ibhola ijikeleziswa ngama-90 degrees, ukuhamba kwegesi kuvaliwe. Le ndlela elula kodwa esebenzayo inika indlela ethembekileyo yokulawula ukuhamba kwegesi yombhobho.
Uyilo lweSitulo seValve
Isihlalo sevalve yinxalenye ebalulekileyo yevalve yebhola njengoko ibonelela ngomphezulu wokutywina ukuthintela ukuvuza xa ivalve ivaliwe. Kusetyenziso lwerhasi yendalo, kukho iindlela ezimbini eziphambili zoyilo lwezihlalo zevalvu: izihlalo ezomeleleyo kunye nezihlalo zentsimbi.
1. Izihlalo ezomeleleyo: Ezi zihlalo zenziwe ngezinto ezibhetyebhetye njengerabha okanye iipolima. Banikezela ngeempawu ezibalaseleyo zokutywina, ngakumbi kwizicelo zoxinzelelo oluphantsi. I-elasticity yezinto eziphathekayo ivumela ukuba ihambelane nomphezulu webhola, yenza isitywina esiqinileyo esinciphisa umngcipheko wokuvuza kwegesi. Nangona kunjalo, izihlalo ezinokomelela zisenokungasebenzi kakuhle kubushushu obuphezulu okanye kubume bemichiza oburhabaxa, kwaye ukusebenza kwazo kunokuncipha ngokuhamba kwexesha.
2. Izihlalo zentsimbi: Izihlalo zetsimbi zenziwe ngesinyithi esomeleleyo, njengentsimbi engasindi okanye ezinye iialloys. Ezi zihlalo zifanelekile kwizicelo zoxinzelelo oluphezulu kunye nobushushu obuphezulu kuba ziyakwazi ukumelana neemeko ezinzima ngaphandle kokuphazamisa ingqibelelo yazo. Iivalvu zebhola ezihleli ngesinyithi azichaphazeleki kancinci ukuba ziguge kwaye zikulungele ukusetyenziswa ixesha elide kwimibhobho yegesi yendalo. Nangona kunjalo, banokunganikezeli ngokutywinwa okufanayo njengezihlalo ezinokuqina, ngakumbi kuxinzelelo oluphantsi.
Iingqwalasela zoyilo
Xa uyila i-valve yebhola yegesi yendalo, izinto ezininzi kufuneka ziqwalaselwe ukuqinisekisa ukusebenza kakuhle. Ezi zinto ziquka uxinzelelo lokusebenza kunye nobushushu, uhlobo lwegesi yendalo ehanjiswayo, kunye neemfuno ezithile zenkqubo yombhobho. Iinjineli kufuneka kwakhona ziqwalasele ubukho bomhlwa kunye nokukhukuliseka, okunokuchaphazela ubomi kunye nokuthembeka kwevalve.
Ukongeza, ukhetho lwe-elastomer okanye isihlalo sesinyithi soyilo luxhomekeke kwisicelo esithile. Umzekelo, ukuba umbhobho usebenza phantsi koxinzelelo oluguquguqukayo kunye namaqondo obushushu, ivalve yesitulo sentsimbi inokufaneleka ngakumbi. Ngakolunye uhlangothi, kwizicelo apho ukuqina kubaluleke kakhulu kwaye iimeko zokusebenza zizinzile, isihlalo se-elastomer sinokuba lukhetho olungcono.
Imigaqo yoyilo yendaloiivalvu zebhola zegesi, ngakumbi iivalve zebhola ze-trunnion, zibaluleke kakhulu ekuhanjisweni okukhuselekileyo nokufanelekileyo kwegesi yendalo. Ekubeni kukho iindidi ezimbini eziphambili zoyilo lwesihlalo sevalve: i-resilient kunye nentsimbi, iinjineli kufuneka zivavanye ngononophelo iimfuno ezithile zesicelo sabo ukukhetha isisombululo esifanelekileyo. Ngokuqonda imisebenzi kunye nokuqwalaselwa koyilo lwala mavalvu, abaqhubi banokuqinisekisa ukunyaniseka kwemibhobho yegesi yendalo kunye negalelo kukhuseleko olupheleleyo lweshishini lamandla.
Ixesha lokuposa: Jul-08-2025