Iivalve zesangokwayeiivalve butterflyzisetyenziswa njengokutshintsha ukulawula izinga lokuhamba kokusetyenziswa kwemibhobho. Ewe kunjalo, kusekho iindlela kwinkqubo yokukhetha iivalve zebhabhathane kunye neevalvu zesango.
Kuthungelwano lwemibhobho yonikezelo lwamanzi, ukuze kuncitshiswe ubunzulu bomhlaba wombhobho wokugquma, ububanzi ngokubanzi bombhobho omkhulu buxhotyiswe ngevalve yebhabhathane, kwaye ukuba ubunzulu bokugquma komhlaba abubalulekanga, zama ukukhetha ivalve yesango, kodwa ixabiso levalve yesango yenkcazo efanayo liphezulu kunexabiso levalve yebhabhathane. Ngokubhekiselele kumgca wocando lwecaliber, indawo nganye kufuneka iqwalaselwe ngokwemeko nganye. Ngokombono wokusetyenziswa kweminyaka elishumi edlulileyo, ukungaphumeleli kwevalve yebhabhathane kuphezulu kunoko.ivalve yesango, ngoko kukufanelekile ukunikela ingqalelo ukwandisa uluhlu lokusetyenziswa kwevalve yesango ukuba iimeko zivumela.
Kwiminyaka yakutshanje, abaninzi abavelisi bevalvu basekhaya baphuhlise kwaye balinganisa iivalvu zesango elithambileyo, ezinezi mpawu zilandelayo kuneweji yemveli okanye iivalvu zamasango adityanisiweyo aphindwe kabini:
Iivalveumzimba kunye nebhonethi yevalve yesango lokutywina ethambileyo iphoswe ngendlela echanekileyo yokuphosa, eyenziwe ngexesha elinye, ngokusisiseko ayilungiswanga, kwaye ayisebenzisi amakhonkco obhedu wokutywina, igcina iintsimbi ezingenayo i-ferrous.
Akukho mngxuma ezantsi kweivalve yesango elithambileyo, akukho ngqokelela ye-slag, kunye nezinga lokungaphumeleli kweivalve yesangoukuvula nokuvala kuphantsi.
Ipleyiti yevalve ethambileyo enetywina iyafana ngobukhulu kwaye iyatshintshatshintsha kakhulu.
Ngoko ke, i-valve yesango elithambileyo liya kuba luhlobo apho imboni yokubonelela ngamanzi iyakuvuyela ukuyamkela. Okwangoku, i-diameter yevalve yesango elithambileyo eyenziwe e-China yi-1500mm, kodwa i-diameter yabaninzi abavelisi iphakathi kwe-80-300mm, kwaye kusekho iingxaki ezininzi kwinkqubo yokuvelisa ekhaya. Icandelo eliphambili levalve yesango lokutywina elithambileyo yipleyiti yevalve enerabha, kwaye iimfuno zobugcisa zepleyiti yevalve enerabha ziphezulu, kwaye ayingabo bonke abavelisi bamazwe angaphandle abanokuyifezekisa, kwaye ihlala ithengwe kwaye idityaniswe kumzi mveliso onokuthenjwa. umgangatho.
Ibloko yobhedu yetywina elithambileyo lasekhayaivalve yesangoifakwe kwaye ixhonywe ngaphezulu kwepleyiti yevalve yerabha yomgca, efana nolwakhiwo lwevalve yesango, kwaye ulutya lwerabha lwepleyiti yevalve kulula ukuluxobula ngenxa yokukhuhla okusebenzayo kwebloko ye nut. Kwivalve yesango lokutywina elithambileyo lenkampani yangaphandle, ibloko yentongomane yobhedu ifakwe kwinkunzi yegusha enerabha enemigca ukuze yenze iyonke, eyoyisa ezi ntsilelo zingentla, kodwa ukugxila kokudityaniswa kwesigqubuthelo sevalvu kunye nomzimba wevalvu uphezulu. .
Nangona kunjalo, xa uvula kwaye uvala i-valve yesango elithambileyo, akufanele ivalwe kakhulu, ngokude nje ukuba umphumo wokumisa amanzi ufezekisiwe, ngaphandle koko akulula ukuvula okanye ukukhupha i-rubber lining. Umenzi we-valve, kuvavanyo lovavanyo loxinzelelo lwe-valve, ukusetyenziswa kwe-torque wrench ukulawula izinga lokuvala, njengabaqhubi be-valve yenkampani yamanzi kufuneka balandele le ndlela yokuvula nokuvala.
Yintoni umahluko phakathi kokusetyenziswa kweiivalve butterflykwayeiivalve zesango?
Ngokomsebenzi kunye nokusetyenziswa kwevalve yesango kunye nevalve yebhabhathane, ukuchasana kokuhamba kwevalve yesango kuncinci, ukusebenza kokutywina kulungile, kuba isalathiso sokuhamba kwepleyiti yevalve yesango kunye nephakathi yi-engile ethe nkqo, ukuba ivalve yesango. ayikho endaweni yokutshintsha ipleyiti yevalve, okuphakathi ukukhuhla ipleyiti yevalve yenza ipleyiti yevalve ingcangcazele, kwaye kulula ukonakalisa ivalve yesango.
Ivalve yebhabhathane, ekwaziwa ngokuba yivalve yebhabhathane, sisakhiwo esilula sevalve elawulayo, enokuthi isetyenziswe ekuvuleni/kucime ulawulo lombhobho ophakathi woxinzelelo lwebhabhathane ibhekisa kwindawo yokuvala (idiski okanye ipleyiti yebhabhathane) njenge I-disc, ejikeleza i-valve shaft ukuphumeza ukuvulwa kunye nokuvalwa kohlobo lwevalve, ivalve ingasetyenziselwa ukulawula ukuhamba kweentlobo ezahlukeneyo zolwelo olunjengomoya, amanzi, umphunga, imidiya eyahlukeneyo eyonakalisayo, udaka, ioli, ulwelo. imidiya yesinyithi kunye ne-radioactive. Ngokukodwa idlala indima yokusika kunye ne-throttling kwipayipi. Ivalve yebhabhathane yokuvula kunye nenxalenye yokuvala yipleyiti yebhabhathane efana nedisc, ejikeleza i-axis yayo kumzimba wevalvu, ukuze ifezekise injongo yokuvula nokuvala okanye ukulungisa.
I-butterfly plate iqhutywe yi-valve stem, kwaye ukuba ijika i-90 °, inokugqiba ukuvula nokuvalwa. Ngokutshintsha i-angle yokuphambuka yebhabhathane, isantya sokuhamba kwe-medium singalawulwa.
Iimeko zokusebenza kunye nephakathi:Ivalve yebhabhathaneikulungele ukuthutha imibhobho yemithombo yeendaba eyonakalisayo nengadlekiyo kwiinkqubo zobunjineli ezifana neziko, irhasi yamalahle, irhasi yendalo, irhasi yepetroleum engamanzi, igesi yesixeko, umoya oshushu nobandayo, ukunyibilikiswa kweekhemikhali kunye nokukhusela umbane kokusingqongileyo, unikezelo lwamanzi nolwakhiwo. i-drainage, njl., kwaye isetyenziselwa ukulawula kunye nokunqumla ukuhamba kweendaba.
Ivalve yesango (ivalve yesango) yindawo yokuvula kunye nokuvala yesango, isalathiso sokuhamba kwesango sixhomekeke kwicala lomlambo, i-valve yesango inokuvulwa ngokupheleleyo kwaye ivalwe, ukungahambi kakuhle kweeparamitha zocango. eyahlukileyo, ngokuqhelekileyo i-5 °, xa iqondo lokushisa eliphakathi lingekho phezulu, yi-2 ° 52′. Ukuphucula ukwenziwa kwayo kunye nokwenza ukutenxa kwi-engile yomphezulu wokutywina kwinkqubo yokucubungula, olu hlobo lwenkunzi yegusha lubizwa ngokuba yi-elastic ram.
Xa iivalve yesangoivaliwe, indawo yokutywina inokuxhomekeka kuphela kuxinzelelo oluphakathi ukutywinwa, oko kukuthi, ukuxhomekeka kuphela kuxinzelelo oluphakathi ukucinezela indawo yokutywina yenkunzi yegusha ukuya kwisihlalo sevalve kwelinye icala ukuqinisekisa ukutywinwa kwendawo yokutywina, okukuzitywina. Uninzi lweevalvu zesango zitywinwe ngenkani, oko kukuthi, xa ivalve ivaliwe, inkunzi yegusha kufuneka icinezelwe ngenkani kwisitulo sevalve ngamandla angaphandle ukuze kuqinisekiswe ukuqina komphezulu wokutywina.
Imo yokushukuma: Ipleyiti yesango yesivalo sesango ihamba ngendlela ethe tye kunye nesiqu sevalve, ekwabizwa ngokuba yivalve yesango elivulekileyo. Ngokuqhelekileyo kukho intambo ye-trapezoidal kwintonga yokunyusa, ngokusebenzisa i-nut phezulu kwi-valve kunye ne-groove yesikhokelo kumzimba wevalve, intshukumo ejikelezayo iguqulwa ibe yintshukumo yomgca, oko kukuthi, i-torque yokusebenza iguqulwa ibe yi-thrust yokusebenza. Xa i-valve ivuliwe, xa ukuphakama kwenkunzi yegusha ilingana no-1: 1 amaxesha ububanzi be-valve, ukuhamba kwamanzi akuthinteki ngokupheleleyo, kodwa esi sikhundla asikwazi ukubeka iliso ngexesha lokusebenza. Ekusetyenzisweni kwangempela, iphawulwe yi-vertex yesiqu, oko kukuthi, isikhundla esingenakuvulwa, njengendawo evulekile ngokupheleleyo. Ukuze uphendule ngesiganeko sokutshixa sokutshintsha kweqondo lokushisa, ngokuqhelekileyo sivulwa kwindawo ephezulu, kwaye emva koko ibuyele kwi-1 / 2-1 ukujika njengendawo yevalve evuleke ngokupheleleyo. Ngoko ke, indawo evuleke ngokupheleleyo yevalve imiselwa yindawo emi kuyo inkunzi yegusha (okt stroke). Enye ivalve yesikhondo sesango i-nut ibekwe kwisango, kwaye ivili lesandla liyajikeleza ukuqhuba isiqu sevalve ukujikeleza, kwaye ipleyiti yesango iyanyuswa, le valve ibizwa ngokuba yivalve yesango yerotary okanye ivalve yesango intonga emnyama.
Ixesha lokuposa: Aug-22-2024