Bude kangakanani ubomi benkonzo yeevalvu zebhabhathane gabalala?

Ubomi benkonzo yeiivalve butterflyIchatshazelwa zizinto ezininzi ezidityanisiweyo, zihlala ziguquguquka phakathi kweminyaka emi-5 ukuya kwengama-20. 

Izigwebo ezithe ngqo kufuneka zenziwe ngokusekelwe kwizinto eziphathekayo, iimeko zokusebenza, ukuhamba rhoqo, kunye nenqanaba lokulondoloza. Umahluko kubomi obuphambili ngenxa yokwahlukana koyilo kwizakhiwo zokutywina: iivalve zebhabhathane ezitywiniweyo ezithambileyo zixhomekeke kwizinto ezilastiki ezifana nerabha okanye i-polytetrafluoroethylene ukufezekisa ukutywinwa. Nangona ezi zixhobo zinentsebenzo ebalaseleyo yokutywinwa, zithande ukukhasa kunye nokuguga xa ziphantsi koxinzelelo oluphakathi, utshintsho lobushushu, kunye nokuvulwa rhoqo kunye nokuvala, okukhokelela kuguquko okanye ukuqhekeka komphezulu wokutywina. Ngokomzekelo, phantsi kobushushu obuqhelekileyo kunye neemeko zamanzi acocekileyo, i-valve ye-butterfly etywiniweyo ethambileyo ingavulwa kwaye ivalwe ngaphezu kwamaxesha e-50000, kunye nexesha lokuphila malunga ne-5 kwiminyaka eyi-8; Ukuba isetyenziswe kwinkqubo yokuhambisa equkethe i-granular media, ukukhukuliseka kwamasuntswana kuya kukhawulezisa ukunxiba kwendawo yokutywina, kwaye ubomi benkonzo bunokufinyezwa ukuya kwiminyaka emi-3 ukuya kwemi-5. Ivalve yebhabhathane etywiniweyo ithatha intsimbi ukutywinwa kwentsimbi (njengentsimbi engatyiwa, intsimbi yechromium molybdenum), kwaye ukuxhathisa kwayo kuphuculwe ngokudibanisa ialloy eqinile okanye ukutshiza isambatho esingagungqiyo. Ulwakhiwo lwayo oluthathu olune-eccentric lufezekisa inkqubo yokuvula nokuvala i-frictionless ngokusebenzisa i-axis-dimensional offset ye-axis, i-cone surface kunye ne-contact point, ukunciphisa kakhulu izinga lokunxiba. Kwimibhobho yobushushu obuphezulu kunye noxinzelelo oluphezulu, amaxesha okuvulwa kunye nokuvalwa kweevalve zebhabhathane ezitywiniweyo zinokudlula amaxesha angama-100000, kwaye ubomi babo bunokufikelela kwiminyaka eyi-10 ukuya kwengama-20; Ukuba i-medium sisisombululo sekhemikhali esonakalisa kakhulu, kufuneka kusetyenziswe izinto ezinganyangekiyo kwi-corrosion ezifana ne-Hastelloy. Nangona ubomi bunokucuthwa kancinane ngenxa yonyino lweendleko zempahla, isengasebenza ngokuzinzileyo iminyaka esi-8 ukuya kweli-15.

Iimeko zokusebenza yenye into ephambili emisela ubomi beiivalve butterfly. Kwimithombo yeendaba ecocekileyo, indawo epholileyo, kunye neemeko zokusebenza eziphantsi, iinxalenye zevalvu ziphantsi kwamandla afanayo, kunye namazinga aphantsi okunxiba kunye nexesha lokuphila ngokubanzi lisondela kumda ophezulu wethiyori. Ngokomzekelo, kwiinkqubo zokubonelela ngamanzi asezidolophini, i-valve ye-butterfly etywiniweyo ethambileyo ingavulwa kwaye ivalwe ngaphantsi kwamaxesha ama-5 ngosuku, kunye nokugcinwa okufanelekileyo, ubomi babo bunokufikelela kwi-8 ukuya kwi-10 iminyaka. Ngokuchasene noko, kwiimeko ezinzima zokusebenza ezifana ne-metallurgy kunye nobunjineli beekhemikhali, ukushisa okuphezulu (ngaphezulu kwe-400 ℃), uxinzelelo oluphezulu (ngaphezu kwe-10MPa), i-corrosion enamandla (njenge-acid-base solutions), okanye ukunxiba okuphezulu (okufana ne-slurry kunye nothuthu) imidiya inokukhawulezisa ukuguga kwezinto kunye nomonakalo wesakhiwo. Umzekelo, kumbhobho wegesi oqhumayo weplanti yentsimbi, ivelufa yebhabhathane etywiniweyo kufuneka imelane nobushushu obuphezulu obuyi-800 ℃ kunye nokukhuhlwa kokuhamba komoya okunothuli. Nangona kunye nokukhusela i-ceramic yokukhusela, ubomi bayo benkonzo bunokugcinwa kuphela iminyaka emi-5 ukuya kwe-8.

Impembelelo yeendlela zokusebenza kunye nenqanaba lokulondoloza kwixesha lokuphila alikwazi ukuhoywa. Ukuvulwa rhoqo kunye nokuvalwa (ngaphezu kwamaxesha e-10 ngosuku) kunokunyusa ukuguga kumacandelo okuhambisa afana neziqu ze-valve kunye neebheringi, ezikhokelela ekuvuleni kunye nokuvala i-torque kunye ne-jamming; Ukungaphumeleli ukugcina ngokweenkcukacha (ezifana nokungathanjiswa rhoqo okanye ukucoca ukungcola kwindawo yokutywina) kuya kukhawulezisa ukuguga kwamatywina kunye nokunciphisa ixesha elide lokuphila kwevalve. Ngokomzekelo, kwisityalo sekhemikhali, ukusilela ukubuyisela rhoqo ikhonkco lokutywina isihlalo sevalve kubangele ukuvuza okunzulu kwevalve emva kweminyaka emi-3 yokusebenza, ngelixa i-valve egcinwe ngokuhambelana nemimiselo phantsi kweemeko ezifanayo zokusebenza ingaba nexesha lokuphila ukuya kwi-12 iminyaka. Ke ngoko, ukhetho olufanelekileyo, ukusebenza ngokusemgangathweni, kunye nokugcinwa rhoqo zizicwangciso ezingundoqo zokwandisa ubomi benkonzoiivalve butterfly.