Amanqaku amahlanu aphambili okufakelwa kwevalve eqhelekileyo yofakelo lwevalvu yomoya oshushu, ukusetyenziswa kunye nokugcinwa
Iivalve ezininzi ziyalathisa. Ngokomzekelo, i-valve yeglobhu, i-valve ye-throttle, i-valve yokunciphisa uxinzelelo, i-valve yokujonga, njl., ukuba ifakwe kwi-reverse, iya kuchaphazela umphumo wokusetyenziswa kunye nobomi (njenge-valve ye-throttle), okanye ayisebenzi konke konke (njengokunciphisa uxinzelelo. ivalve), kwaye ibangele ingozi (efana nevalve yokukhangela). Iivalvu ngokubanzi ezineempawu ezibonisa indlela emzimbeni. Ukuba akunjalo, kufuneka ichongwe ngokuchanekileyo ngokomgaqo wokusebenza kwevalvu.
I. Ulwalathiso lokufakela kunye nendawo
Iivalve ezininzi ziyalathisa.
Ngokomzekelo, i-valve yeglobhu, i-valve ye-throttle, i-valve yokunciphisa uxinzelelo, i-valve yokujonga, njl., ukuba ifakwe kwi-reverse, iya kuchaphazela umphumo wokusetyenziswa kunye nobomi (njenge-valve ye-throttle), okanye ayisebenzi konke konke (njengokunciphisa uxinzelelo. ivalve), kwaye ibangele ingozi (efana nevalve yokukhangela). Iivalvu ngokubanzi ezineempawu ezibonisa indlela emzimbeni. Ukuba akunjalo, kufuneka ichongwe ngokuchanekileyo ngokomgaqo wokusebenza kwevalvu.
Igumbi levalve elijikeleze ivalve yeglowubhu liyi-asymmetrical, ulwelo lokuyivumela ukusuka ezantsi ukuya phezulu ngezibuko levalve, ngoko ke ukuxhathisa ulwelo kuncinci (kumiselwa yimilo), ukusindisa umsebenzi ovulekileyo (ngenxa yoxinzelelo oluphakathi phezulu) , ivaliwe emva kokupakishwa koxinzelelo oluphakathi, kulula ukuyilungisa, yingakho i-valve yeglobhu ayikwazi ukufaka inyaniso. Ezinye iivalve zineempawu zazo.
Indawo yofakelo lwevalvu kufuneka kube lula ukusebenza.
Nangona ukufakela kunzima okwethutyana, kuyimfuneko ukuqwalasela umsebenzi wexesha elide lomsebenzisi. I-valve engcono yesandla se-valve kunye nokulungelelaniswa kwesifuba (ngokubanzi i-1.2 yeemitha ukusuka kumgangatho wokusebenza), ukwenzela ukuba ukuvulwa kunye nokuvala i-valve ngumzamo omncinci. Ivili lesandla sevalve yomgangatho kufuneka lijonge phezulu kwaye lingathambeki ukunqanda ukusebenza kakubi. Ivalve yomatshini wodonga ixhomekeke kwisixhobo, kwaye umqhubi kufuneka naye ashiywe kwindawo yokuma. Ukuze ugweme ukusebenza kwesibhakabhaka, ngakumbi i-asidi kunye ne-alkali, imidiya enetyhefu, ngaphandle koko ayikhuselekile.
Isango akufanele liguqulwe (oko kukuthi, i-handwheel iphantsi), ngaphandle koko i-medium iya kugcinwa kwindawo yokugubungela ixesha elide, i-corrode i-stem ngokulula, kunye ne-taboo yenkqubo ethile. Kunzima kakhulu ukutshintsha ukupakisha ngaxeshanye. Vula iivalvu zesango le-STEM, MUSA UKUFAKA ngaphantsi komhlaba, kungenjalo ngenxa yokuhlwa okumanzi kwesiqu esiveziweyo. Phakamisa ivalve yokukhangela, ufakelo lokuqinisekisa ukuba idiskhi yevalve ngokuthe nkqo, ukuze ukuphakamisa kube bhetyebhetye. Ivalve yokukhangela i-Swing, xa ifakwe ukuqinisekisa ukuba inqanaba le-pin, ukuze ujingi ube bhetyebhetye. Ivalve yokunciphisa uxinzelelo iya kufakwa ngokuthe tye kumbhobho othe tye, kwaye ayiyi kuthambekela nakweliphi na icala.
Okwesibini, umsebenzi wokwakha
Ukufakela kunye nokwakhiwa kufuneka kulumke, musa ukubetha i-valve eyenziwe ngezinto ezinqabileyo.
Phambi kofakelo
Zonke iintlobo zevalvu kunye neenkcukacha ziya kujongwa ngononophelo ukuthobela iimfuno zoyilo.
(Khangela ukuba ZINOKUSETYENZISWA KWIIMEKO EZIFUNEKAYO ngokwemodeli yevalve kunye nemiyalelo yefektri, kwaye wenze uvavanyo lwamanzi okanye loxinzelelo lomoya ukuba kukho imfuneko.)
Ukongezelela, kufuneka kwakhona kuhlolwe ukuba ukupakishwa kuhambelana, nokuba i-gland bolt inesibonelelo esaneleyo sokulungelelaniswa, kunye nokukhangela ukuba i-stem kunye ne-disc isandi, nokuba kukho i-stick and skew phenomenon.
Umphezulu wokutywina wediski yevalve kufuneka uvalwe ngokuqinileyo, kwaye umgangatho womsonto kufuneka ujongwe kwiivalvu ezinemisonto. Iivalvu ezingaqinisekiswanga AYI KUFAKWA kwaye ziya kupakishwa ngokwahlukeneyo okanye zimakishwe.
Inkunkuma kwivalve.
Inkqubo yokuhlohla
XA UPHAKAMISA IMVAVANE, INTAMBO AKUFUNEKA IBOTSHWE KWISANDLA OKANYE ISIQINISEKISO UKUTHINTA UKONAKALA KWEZI NDAWO. KUFUNEKA KUBOTSHWE KWIFANGE.
Umgca apho i-valve idityaniswe khona kufuneka icocwe.
Umoya ocinezelweyo unokusetyenziselwa ukuvuthela iifayili ze-iron oxide, isanti, i-welding slag kunye nezinye ii-sundries. Le nkunkuma, akukho lula nje ukukrazula indawo yokutywina yevalve, amaqhekeza amakhulu enkunkuma (njenge-slag ye-welding), kodwa inokuthintela i-valve encinci, ukwenzela ukuba ukusilela kwayo.
Xa UFAKA I-SKREW valve, UKUPAKA UKUTYA (I-WIRE NE-aluminium yeoli OKANYE i-PTFE RAW belt material) kufuneka ifakwe kwintambo yombhobho, ungangeni kwi-valve, ukwenzela ukuba ugweme umthamo wememori yevalve, uchaphazele ukuhamba okuphakathi.
Xa ufaka i-valve ye-flange, nikela ingqalelo ekuqiniseni iibholithi ngokulinganayo kwaye ngokulinganayo. I-valve flange kunye ne-flange yombhobho kufuneka ihambelane, ukucocwa kunengqiqo, hleze i-valve ivelise uxinzelelo olugqithisileyo, kunye nokuqhekeka. Kwizinto ezinqabileyo kwaye kungekhona amandla aphezulu e-valve, ingqalelo ekhethekileyo kufuneka ihlawulwe. Ivalve ekufuneka idityaniswe ngombhobho iya kuba yindawo edityanisiweyo kuqala, emva koko indawo evaliweyo iya kuvuleka ngokupheleleyo, ize idityaniswe ifile.
3. Amanyathelo okukhusela
Ezinye iivalvu kufuneka zibe nokhuseleko lwangaphandle, oko kukugcina ubushushu kunye nokugcinwa kwengqele. I-insulation layer ngamanye amaxesha ixutywa nemigca yomphunga oshushu. Luluphi uhlobo lwevalve olufanele lube lubushushu okanye lubanda, ngokweemfuno zemveliso.
Ngokomgaqo, apho i-valve medium ukunciphisa iqondo lobushushu kakhulu, kuya kuchaphazela ukusebenza kakuhle imveliso okanye ivalve emkhenkceni, kufuneka uhlale ushushu, nkqu ubushushu mix; Apho ivalve ingenanto, engalunganga kwimveliso okanye ibangele iqabaka kunye nezinye izinto ezimbi, kufuneka uhlale ubanda. Izinto zokugquma i-asbestos, uboya be-slag, uboya beglasi, i-perlite, i-diatomite, i-vermiculite, njl.; Izinto zokupholisa ziyi-cork, i-perlite, i-foam, iplastiki kunye nokunye.
Isine, i-bypass kunye nesixhobo
Ezinye iivalve, ngaphezu kwezibonelelo eziyimfuneko zokukhusela, nazo zine-bypass kunye ne-instrumentation. Kufakwe i-bypass. Kulula ukulungisa umgibe. Ezinye iivalve, nazo zifakwe i-bypass. Ukufakwa kwe-bypass kuxhomekeke kwimeko yevalvu, ukubaluleka, kunye neemfuno zemveliso.
Zintlanu, buyisela ukupakisha
I-valve yesitoko, ukupakisha okuthile akuzange kube kuhle, kwaye ezinye azihambelani nokusetyenziswa kweendaba, ezifuna ukubuyisela ukupakisha.
Umzi-mveliso weValve awukwazi ukuqwalasela ukusetyenziswa kwamawaka eentlobo ezahlukeneyo zeendaba, ibhokisi yokupakisha isoloko igcwele ingcambu eqhelekileyo, kodwa xa isetyenziswa, kufuneka ivumele ukupakisha phakathi ukulungelelanisa.
Xa utshintsha ukupakisha, cinezela ngqukuva. Umthungo ngamnye wendandatho ukuya kuma-degrees angama-45 ufanelekile, ring kwaye uvule uvule ii-degrees ezingama-180. Ukuphakama kokupakisha kufuneka kuthathelwe ingqalelo i-leeway ukuze i-gland iqhubeke nokucinezela, kwaye ngoku kuyafuneka ukuba indawo esezantsi ye-gland icinezele igumbi lokupakisha kubunzulu obufanelekileyo, obunokuthi ngokubanzi bube yi-10-20% yobunzulu bubonke bobunzulu. igumbi lokupakisha. Kwiivalve ezifunayo, i-joint Angle yi-30 degrees. Umthungo ophakathi kweringi kunye neringi ugxadazele ngamadigri angama-120.
Ukongeza ukupakisha, kodwa ngokwemeko ethile, ukusetyenziswa kwerabha O-ring (irabha yendalo ukumelana 60 degrees Celsius buthathaka alkali, butadiene irabha ukumelana ukuya 80 degrees Celsius ikristale oyile, Fluorine irabha ukumelana ezahlukeneyo ezonakalisayo. media ngezantsi 150 degrees celcius) ezintathu zipakishwe polytetrafluoron ring (ixhathise eendaba eyomeleleyo edlekayo ngaphantsi kwama-200 degrees Celsius) nenayiloni isitya umsesane (resistant ukuya 120 degrees Celsius ammonia, alkali) kunye nezinye ezenza filler. Umaleko we-TEflon we-tape yezinto eziluhlaza unokuphucula umphumo wokutywina kunye nokunciphisa ukubola kwe-electrochemical ye-valve stem. Xa ucinezela i-seasoning, jika i-stem ngaxeshanye ukugcina yonke indawo ngokulinganayo, kwaye uthintele ukufa kakhulu, qinisa i-gland ukuze unyanzelise ngokulinganayo, awukwazi ukuthambeka.
Ufakelo lwevalvu yomoya oshushu ngokubanzi kunye nokusetyenziswa kunye nokugcinwa kofakelo kunye nokusetyenziswa kweemfuno zobugcisa
1. I-valve yomoya oshushu ingafakwa kuphela kwaye isetyenziswe kunye ne-stem perpendicular emhlabeni, kwaye ukutshatyalaliswa kufuneka kwakhona kuqhutywe phantsi kweemeko ze-stem perpendicular emhlabeni;
2. Indlela yokungenisa umoya yevalve yomoya oshushu kunye nendawo yokungena nokuphuma kwamanzi okupholisa kufuneka ihambelane necala lomzobo wofakelo. Xa ufaka ivalve yomoya oshushu, utolo lomoya kufuneka lukhombe kumbhobho oyintloko womoya oshushu. Xa ivalve yomoya oshushu isetyenziswa njengevalve yokutsha kunye nevalve yeflue, utolo lomoya kufuneka lukhombe kwisitovu somlilo oshushu; Xa ivalve yomoya oshushu isetyenziswa njengevalve yokuphumla, utolo lomoya kufuneka lukhombe kumbhobho ongundoqo womoya oshushu; Xa ivalve yomoya oshushu isetyenziswa njengevalve exutyiweyo yokuvala umoya, utolo lomoya kufuneka lujonge kude kumbhobho oyintloko womoya oshushu. (Xa ivalve yomoya oshushu isetyenziswa njengendlela yofakelo yezi valve zikhankanywe ngasentla * Xa igama le-nameplate liseshushu ivelufa yomoya, kunye negama le-nameplate ngokucacileyo ligama levalve engasentla, utolo lomoya lubonisa icala levalve ephakathi. .)
3. Phambi kokucoca, coca umphezulu wokutywina womzimba wevalvu kunye nepleyiti yevalvu ngomsonto womqhaphu ukunqanda umphezulu wokutywina ukuba ungakrwela. Ngaphambi kokusebenza, yongeza ioli yokuthambisa kwindawo nganye yeoli, ufefe i-graphite powder okanye igrisi kwindawo yokutywina edadayo;
4. Emva kofakelo, jonga ukuqiniswa kweebholiti kumzimba wevalve, isigqubuthelo sevalvu, isitywina se-valve stem kunye namanye amalungu ukuqinisekisa ukuba akukho kuvuza komoya kunye nokuwa okugudileyo kwepleyiti yevalvu. Qalisa ivalve ngesandla ngesantya esiphantsi ukuze uqinisekise ukusebenza okuqhelekileyo kwendlela ngaphambi kokuba uqalise uvavanyo;
5. Ufakelo lombhobho wevalve lufakelo olupheleleyo (ngaphandle kwesixhobo sokuhambisa). Indawo yokunyusela yilaphu yokuphakamisa kumzimba wevalve (i-4 ibekwe kwiflange ejikelezileyo, isivalo sokuphakamisa isigqubuthelo sevalve sinqatshelwe ngokungqongqo ukunyuswa ngokubanzi), isixhobo sokuhambisa sifakwe kwivalve emva kokufakwa ngokubanzi kwevalve. ;
6. Umbhobho wevalve flange phakathi kokusetyenziswa kwe-ceramic metal gasket eqatywe ngobushushu obuphezulu sealant seal, ukuthintela ukuvuza komoya;
7. Xa ivalve ivuliwe, indawo engezantsi yepleyiti yevalve kufuneka ibe ngaphezulu kwe-100mm ngaphezulu kwecala elingasentla leshaneli yevalve (indlela yokucoca: phakamisa ipleyiti yevalve ukuya kumda ongaphezulu kwaye emva koko ulahle i-50mm njengokuvula ipleyiti yevalve. isikhundla). Amanzi okupholisa ivalve kufuneka avulwe, iqondo lobushushu lokuphuma lingaphantsi kwama-40℃;
8. Ngaphambi kokufakela i-valve, isakhelo sothumelo kunye nomzimba we-valve kufuneka upakishwe kwaye ugcinwe ngokwahlukileyo, kwaye ke ukufakela konke kuya kwenziwa kwisiza. Qinisa umzimba wevalve kunye nesixhobo sokuhambisa ngokwendawo yojongano lofakelo ngexesha lofakelo, kwaye uqinise ivalve kufutshane nendawo yokutshintsha emva kofakelo kunye nohlengahlengiso. Xa ivalve isebenza kuvavanyo, kufuneka iqalwe ngesandla phambi kombane. (Qaphela: Xa ufaka i-valve yokuhambisa i-hydraulic, amacala omabini e-cylinder piston ane-stroke yamahhala xa ivalve ivuliwe kwaye ivaliwe, kwaye emva koko ulungise utshintsho lwe-stroke emva kohlengahlengiso. I-Rack kunye ne-pinion yokuhambisa i-valve ye-hydraulic kufuneka ilungelelanise indawo ye-cylinder piston ukuya kwindawo elinganiselweyo ye-valve plate stroke, kwaye emva koko uxhome ikhonkco). Umsebenzi kufuneka ugudiswe ngaphandle kongquzulwano kunye nempembelelo ebambekayo.
Ukulungiswa kwenkonzo yevalvu kunye nokugcinwa kwayo
1. Qwalasela ukusebenza kokutywinwa kwevalve kanye ngeveki xa ivaliwe, gweba isiphumo sokutywina sesivalo ngesandla nangendlebe, kwaye unike ingxelo kwaye ujongane nazo naziphi na iingxaki ngexesha;
2. Jonga ubushushu bamanzi okupholisa, uxinzelelo lwamanzi kunye nokuvuza kwangaphandle ngaphambi nasemva komsebenzi, kwaye uphelise naziphi na iingxaki ngexesha;
3. Xa uvula kwaye uvala i-valve, ingqwalasela kufuneka ihlawulwe kwimeko yokusebenza ezinzileyo, kwaye iingxaki kufuneka ziqwalaselwe ngexesha;
4. Gcwalisa ioli yokuthambisa kunye negrisi kabini ngeveki ukukhusela ukungabikho kweoli kunye nokutshisa umonakalo weendawo ezihambayo;
5. Akuvumelekanga ngokungqongqo ukusebenzisa phantsi kwemeko yokungonelanga kwamanzi okupholisa kunye nokunqunyulwa kwamanzi;
6. Jonga rhoqo kwaye ucoce intlenga kwivalve, kwaye ujongane nezinto ezingaqhelekanga ngexesha;
7. Nceda ufunde incwadana yemigaqo yesixhobo sombane enikwe nevalve yombane kwimiyalelo yesixhobo sombane.
enye
1. Ivalve iya kugcinwa kwaye ithuthwe ngomphezulu wokutywina wevalve ebekwe ngezantsi kwaye utolo lwevalvu yomoya lujonge phezulu (xa igama leplate yegama liyivalve, ivalve yokuphumla komoya ephuma ngasemva kunye ivelufa exutyiweyo esikiweyo ivane yomoya ijonge ezantsi) kunye nesiqu sevalve simiswe ngokuqinileyo kwindawo evaliweyo ukunqanda umphezulu wokutywina ukuba wonakaliswe kukungcangcazela;
2. Isixhobo sothumelo siya kuchithwa ngumenzi emva kofakelo olufanelekileyo kunye nokulungiswa kweempazamo
Ixesha lokuposa: Sep-14-2022
