I-valve ye-butterfly ye-centerline inesakhiwo esilula kwaye kulula ukuyenza, kodwa ngenxa yesakhiwo sayo kunye nokunciphisa izinto eziphathekayo, iimeko zokusetyenziswa zilinganiselwe.Ukuze kuhlangatyezwane neemfuno zeemeko zokwenyani zesicelo, uphuculo oluqhubekayo lwenziwa kwesi siseko, kwaza emva koko kwavela iivalve zebhabhathane eccentric enye, iivalve zebhabhathane eccentric ephindwe kabini, kunye neevalve zebhabhathane eccentric ezintathu ziye zavela.Olona phawu lukhulu kolu phawu lwesithathu kukuba lutshintsha ngokusisiseko ubume bokutywina.Ayisesiso isitywina se-positional, kodwa isitywina se-torsion, oko kukuthi, ayixhomeki kwi-elastic deformation yesitulo sevalve, kodwa ixhomekeke ngokupheleleyo kuxinzelelo lomphezulu wonxibelelwano lwesitulo sevalve.Isiphumo sokutywinwa, ke ngoko, sisombulula ingxaki yokuvuza kwe-zero yesitulo sevalve yesinyithi kwindawo enye, kwaye ngenxa yokuba uxinzelelo lomphezulu wonxibelelwano lulingana noxinzelelo oluphakathi, uxinzelelo oluphezulu kunye nokumelana nobushushu obuphezulu nako kusombululeka ngokulula.

Izinto ezilungileyo zoyilo lwe-eccentric kathathu

1. Uyilo olukhethekileyo lwe-conical seal luqinisekisa ukuba i-disc ayichukumisi indawo yokutywinwa kude kube i-valve ivaliwe-oku kukhokelela kwisitywina esiphindaphindiweyo kwaye kwandisa kakhulu ubomi benkonzo yevalve.

2. Ubume beplate yevalve ye-valve ye-butterfly eccentric kathathu yi-elliptical cone, kwaye ubuso bayo buhlanganiswe nge-alloy eqinile, enokumelana okugqwesileyo kokugqoka.Isihlalo esidadayo sentsimbi esingenasici sinomsebenzi wokulungisa iziko ngokuzenzekelayo.Xa ivalve ivuliwe, i-elliptical cone yokutywina umphezulu wevalve disc iqala yahlulwe kwisitulo sevalve esimilise u-U, emva koko ijikelezwe;xa ivaliwe, i-disc ye-valve ijikeleza, kwaye i-disc ye-valve ilungelelanisa ngokuzenzekelayo iziko kwisihlalo se-valve elastic phantsi kwesenzo se-eccentric shaft.Isihlalo sisebenzisa uxinzelelo lokuguqula isihlalo sevalve de isihlalo sevalve kunye neelliptical conical seal surface yevalve disc ihambelane ngokusondeleyo.Xa ivalve ivuliwe kwaye ivaliwe, i-disc butterfly ayikhuli isihlalo sevalve, kwaye i-torque ye-valve stem idluliselwa ngokuthe ngqo kwindawo yokutywina ngepleyiti yebhabhathane, kwaye i-torque yokuvula incinci, ngaloo ndlela isusa into eqhelekileyo yokutsiba. xa uvula ivalve.

3. Ukutywinwa kwe-Metal-to-metal kuqinisekisa ukuba amaqamza omoya avaliwe ngokuqinileyo ukuze kuphunyezwe ukusebenza kokuvuza.

4. Ifanelekile kumajelo eendaba arhabaxa-isakhiwo sentsimbi yonke sibonelela ngokutya kunye nokumelana nobushushu ukuba ezinye iivalve zebhabhathane ziyilwe ngezitywina ezilastiki azinalo.

5. Uyilo lwejometri lwamacandelo okutywinwa lunokubonelela ngokuhamba okungahambiyo kwi-valve.Oku kwandisa ubomi bevalve kwaye ivumela ukufakwa kwe-actuator ye-torque ephantsi.

6. Akukho mgodi phakathi kwamacandelo okutywinwa, okungayi kubangela ukuvaleka, ukunciphisa iindleko zokugcina kunye nokwandisa ubomi be-valve.

7. Uyilo lwesihlalo sevalve lunokuthintela ivalve ekugqityweni