Ivalve yesangokwayeivelufa butterflyzombini zidlala indima yokutshintsha kunye nokulawula ukuhamba kokusetyenziswa kwemibhobho.Kodwa kukho iindlela kwinkqubo yokukhetha iivalve zebhabhathane kunye neevalve zesango.
Kuthungelwano lonikezelo lwamanzi, ukuze kuncitshiswe ubunzulu bokugquma komhlaba wombhobho, ivalve yebhabhathane ikhethwa ngokubanzi kwimibhobho emikhulu yodayamitha.Ukuba inempembelelo encinci kubunzulu bomhlaba ogubungelayo, zama ukukhetha ivalve yesango, kodwa ixabiso levalve yesango yenkcazo efanayo liphezulu kunelo valve yebhabhathane.Ngokubhekiselele kumgca wokusikwa kwecaliber, kufuneka ithathelwe ingqalelo ngokwemeko ethile yendawo nganye.Ngokwembono yokusetyenziswa kule minyaka ilishumi idlulileyo, izinga lokungaphumeleli kweevalvu zebhabhathane liphezulu kunelo leevalvu zesango, ngoko ke kufanelekile ukuhoywa ukwandisa umda wokusetyenziswa kweevalvu zesango xa iimeko zivuma.
Malunga neevalvu zesango Kwiminyaka yakutshanje, abenzi beevalvu ezininzi baye bavelisa kwaye baxelisa iivalve zesango ezitywiniweyo.Xa kuthelekiswa ne-wedge yendabuko okanye i-valve yesango eliphindwe kabini, le valve yesango inezi mpawu zilandelayo:
1. Umzimba wevalve kunye nebhonethi yevalve yesango etywiniweyo iphoswe ngendlela echanekileyo yokuphosa, eyenziwe ngexesha elinye, ngokusisiseko ayifuni ukucutshungulwa ngoomatshini, ayisebenzisi intsimbi yobhedu yokutywinwa, kwaye igcina isinyithi esingenawo intsimbi. .
2. Akukho mgodi ophantsi kwevalve yesango elithambileyo, kwaye akukho slag iqokelelwe, kwaye izinga lokungaphumeleli kwevalve yesango lokuvula nokuvalwa liphantsi.
3. Ipleyiti yevalve enerabha ethambileyo etywiniweyo inobukhulu obufanayo kunye nokuguquguquka okunamandla.
Ngoko ke, ivalve yesango lokutywina elithambileyo liya kuba luhlobo apho imboni yonikezelo lwamanzi izimisele ukuyamkela.Okwangoku, ububanzi beevalvu zesango ezitywiniweyo ezenziwe eChina zifikelela kwi-1500mm, kodwa ububanzi babaninzi abavelisi buphakathi kwe-80-300mm.Kusekho iingxaki ezininzi kwinkqubo yokwenziwa kwemveliso yasekhaya.Icandelo eliphambili levalve yesango lokutywina elithambileyo yipleyiti yevalve enerabha, kwaye iimfuno zobugcisa zepleyiti enerabha enerabha ziphezulu kakhulu, ezingengabo bonke abavelisi bangaphandle abanokufikelela, kwaye zihlala zithengwa kwaye zihlanganiswe kubakhiqizi abanokwethenjelwa. umgangatho.
Ibloko yentongomane yobhedu yevalve yesango lokutywina ethambileyo yasekhaya ifakwe ngaphezulu kwepleyiti enerabha enerabha, efana nesakhiwo sevalve yesango.Ngenxa yokukhuhlana okushukumayo kwebloko ye nut, ulwaleko lwerabha lwepleyiti yevalvu luxotyulwa lula.Ezinye iinkampani zangaphandle zifakela ibloko yentongomane yobhedu kwisango elinerabha elinemigca ukwenza yonke, eyoyisa ezi ntsilelo zingentla, kodwa ubunzulu bendibaniselwano yesigqubuthelo sevalvu kunye nomzimba wevalvu uphezulu.
Nangona kunjalo, xa uvula kwaye uvala i-valve yesango lokutywina elithambileyo, akufanele livalwe kakhulu, ngokude nje ukuba umphumo wokumisa amanzi ufezekisiwe, ngaphandle koko akulula ukuvula okanye umgca werabha uhlanjululwe.Umenzi wevalvu usebenzisa i-torque wrench ukulawula iqondo lokuvala ngexesha lovavanyo loxinzelelo lwevalvu.Njengomqhubi wevalvu wenkampani yamanzi, le ndlela yokuvula kunye nokuvala kufuneka nayo ixeliswe.
I-valve yesango yisango lokuvula kunye nokuvala, indlela yokuhamba yesango i-perpendicular ukuya kwicala le-fluid, kwaye i-valve yesango inokuvulwa ngokupheleleyo kwaye ivalwe ngokupheleleyo.Ukuphucula ukuveliswa kwayo kunye nokwenza ukuphambuka kwe-angle yendawo yokutywina ngexesha lokucubungula, eli sango libizwa ngokuba yisango eli-elastic.
Xa ivalve yesango ivaliwe, umphezulu wokutywina unokuxhomekeka kuphela kuxinzelelo oluphakathi ukutywinwa, oko kukuthi, ukuxhomekeka kuphela kuxinzelelo oluphakathi ukucinezela indawo yokutywina yesango ukuya kwisihlalo sevalve kwelinye icala ukuqinisekisa ukutywinwa kwe-valve. umphezulu wokutywina, onokuzitywina.Uninzi lwee-valve zesango zitywinwe ngenkani, oko kukuthi, xa i-valve ivaliwe, isango kufuneka linyanzeliswe ngokuchasene nesihlalo sevalve ngamandla angaphandle ukuze kuqinisekiswe ukuqina kwendawo yokutywina.
Imo yentshukumo: Isango levalvu yesango lihamba kumgca othe ngqo kunye nesiqu sevalve, ekwabizwa ngokuba yivalve yesango yesikhondo esinyukayo.Ngokuqhelekileyo, kukho imicu ye-trapezoidal kwintonga yokunyusa.Ngokusebenzisa i-nut phezulu kwevalve 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 kwesango lilingana no-1: 1 amaxesha ububanzi be-valve, umzila we-fluid awuthinteki ngokupheleleyo, kodwa esi sikhundla asikwazi ukubeka iliso ngexesha lokusebenza.Ekusetyenzisweni kwangempela, i-apex ye-valve stem isetyenziswe njengophawu, oko kukuthi, indawo apho ayikwazi ukuvulwa, njengendawo yayo evulekile ngokupheleleyo.Ukuze kuthathelwe ingqalelo into yokuvala i-lock-up ngenxa yokutshintsha kweqondo lokushisa, ngokuqhelekileyo ivulwa kwindawo ephezulu, kwaye emva koko ibuyele kwi-1 / 2-1 ukujika, njengendawo ye-valve evulekile ngokupheleleyo.Ngoko ke, indawo evuleke ngokupheleleyo yevalve imiselwe ngokwendawo yesango (okt stroke).Enye ivalve yesango i-stem nut ibekwe kwisango, kwaye ukujikeleza kwesondo lesandla kuqhuba isikhondo sevalve ukuba sijikeleze, nto leyo eyenza ukuba isango liphakame.Olu hlobo lwevalve lubizwa ngokuba yivalve yesango yesiqu esijikelezayo okanye ivelufa yesango elimnyama.
Yintoni umahluko phakathi kwevalve yebhabhathane kunye nevalve yesango?
Ngokomsebenzi kunye nokusetyenziswa kwevalve yesango kunye ne-butterfly valve, ivalve yesango inokumelana nokuhamba okuncinci kunye nokusebenza kakuhle kokutywinwa.Ngenxa yokuba icala lokuhamba kwepleyiti yevalve yesango kunye nendawo ephakathi ikwi-engile ethe nkqo, ukuba ivalve yesango ayitshintshwanga endaweni yayo kwipleyiti yevalvu, ukukhuhla okuphakathi kwipleyiti yevalve kuya kwenza ipleyiti yevalve ingcangcazele., Kulula ukulimaza isitywina se-valve yesango.
Ivalve yebhabhathane, ekwaziwa ngokuba yivalve yeflap, luhlobo lwevalve yokulawula enesakhiwo esilula.Ivalve yebhabhathane enokusetyenziswa kulawulo oluvaliweyo lwemibhobho yoxinzelelo olusezantsi ithetha ukuba ilungu elivalayo (idiski okanye ipleyiti) yidiski, ejikeleza ishafti yevalve ukufikelela ukuvuleka nokuvala.Ivalve enokusetyenziswa ukulawula ukuhamba kweentlobo ngeentlobo zolwelo olunjengomoya, amanzi, umphunga, imidiya eyahlukeneyo eyonakalisayo, udaka, i-oyile, isinyithi esilulwelo kunye nemidiya yeradioactive.Ngokukodwa idlala indima yokusika kunye ne-throttling kwipayipi.Ivalve yebhabhathane yokuvula kunye nenxalenye yokuvala yipleyiti yebhabhathane emile okwediski, ejikeleza i-axis yayo kumzimba wevalvu ukufezekisa injongo yokuvula nokuvala okanye uhlengahlengiso.
Ipleyiti yebhabhathane iqhutywa sisikhondo sevalve.Ukuba ijika i-90 °, inokugqiba ukuvula kunye nokuvala enye.Ngokutshintsha i-angle ye-deflection ye-disc, ukuhamba kwe-medium kunokulawulwa.
Iimeko zokusebenza kunye namajelo eendaba: Iivalvu zebhabhathane zifanelekile ukuhambisa ulwelo olwahlukeneyo oludlekayo nolungonakaliyo kwiinkqubo zobunjineli ezifana nomvelisi, irhasi yamalahle, igesi yendalo, igesi yepetroleum elulwelo, igesi yesixeko, umoya oshushu nobandayo, ukunyibilikiswa kweekhemikhali kunye nokukhusela umbane wokusingqongileyo. , ukwakhiwa kwamanzi kunye nokukhutshwa kwamanzi, njl. Kwimibhobho ye-medium, isetyenziselwa ukulungelelanisa kunye nokunqumla ukuhamba kwe-medium.
Ixesha lokuposa: Sep-28-2022