Kubalulekile ukugcina la manqaku engqondweni malunga nofakelo lwevalvu! Amanqaku ofakelo lweevalvu zaseJamani zangaphandle
Umgangatho wofakelo lwe-valve luchaphazela ngokuthe ngqo ukusetyenziswa, ngoko kufuneka ingqalelo ngenyameko ihlawulwe kuyo.
(a) indlela yofakelo lwevalvu kunye nendawo
Iivalve ezininzi zinendlela yokuqondisa, njengevalve yeglowubhu, ivalve ye-throttle, ivalve yokunciphisa uxinzelelo, ivalve yokukhangela, njl., ukuba ifakwe umva, iya kuchaphazela ukusetyenziswa kwesiphumo kunye nobomi (njengevalve ye-throttle), okanye ukungasebenzi kuyo. zonke (ezifana nevalve yokunciphisa uxinzelelo), kwaye zibangele ingozi (njengevalve yokukhangela). Ivalve ngokubanzi, kukho uphawu lolwalathiso kumzimba wevalvu; 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.
I-Valve INSTALLATION POSITION, kufuneka kube lula ukusebenza: KWABA ukufakwa kunzima okwethutyana, kodwa kunye nomsebenzi wexesha elide lomsebenzi. I-valve handwheel kunye nokulungelelaniswa kwesifuba (ngokubanzi i-1.2 yeemitha ukusuka kumgangatho wokusebenza), ukwenzela ukuba ukuvulwa nokuvalwa kwevalve kukuncinci. 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.
(2) ukufakwa kwevalvu kunye nokwakhiwa
Ukufakela kunye nokwakhiwa kufuneka kulumke, musa ukubetha i-valve eyenziwe ngezinto ezinqabileyo.
Ngaphambi kokufaka, i-valve KUFUNEKA IHLOLWE UKUZE kujongwe iinkcukacha KUNYE neemodeli ukuchonga nawuphi na umonakalo, ngakumbi kwisiqu. Kwakhona ujike amaxesha ambalwa ukuze ubone ukuba i-skewed, kuba kwinkqubo yokuthutha, kulula ukubetha i-stem skewed. Kwakhona *** inkunkuma kwivalve.
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 ivalvu
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.
(4) 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.
(5) Ukutshintshwa kokupakisha
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.
Amanqaku ofakelo lweevalvu zaseJamani zangaphandle
Ngaphambi kokufakwa kwevalve, qinisekisa ukuba i-valve ihlangabezana neemfuno zoyilo kunye nemigangatho efanelekileyo.
Xa uphethe kwaye ufaka iivalve, zilumkele amaqhuma kunye nemikrwelo
Phambi kokufaka Ivalve, NGAPHAKATHI KOMbhobho KUFUNEKA ucocwe UKUSUSA ukungcola okufana neefayili zentsimbi ukuthintela isitulo sokutywina sesivalo ekubeni sibe nemizimba yangaphandle. Ukongezelela, i-valve kufuneka ifakwe kwindawo evaliweyo.
Ukusebenza kwevalve yokuphakamisa. Ivalve IZA KUNYUKA NGOKUCHANEKILEYO KWINDAWO YOKUPHAKAMISA ESISHIYIWEYO, KWAYE AYISAYI KUPAKANYISWA OKANYE IYA KUTYHLWA PHANTSI komkhosi wendawo.
Xa ufaka i-valve, kuyimfuneko ukugqiba ukuba ngaba i-flow direction of medium, ifom yokufakela kunye nesikhundla se-handwheel ihambelana nemimiselo.
Ukufakwa kwee-valve zokudibanisa ezine-flanged
(1) Umphezulu weflange wevalve kunye nemibhobho kufuneka ingabinamonakalo, imikrwelo, njalo njalo, kwaye igcinwe icocekile. Ngokukodwa ukusetyenziswa kwee-gaskets zetsimbi (icandelo le-oval okanye i-octagonal), i-flange grooves kunye ne-gaskets kufuneka ihambelane,
Kufuneka iqatywe ngombala obomvu ukuqinisekisa ukuba imeko yayo yokutywinwa ilungile.
(2) I-perpendicularity yendawo yeflange kumbhobho kunye nomgca ophakathi wombhobho kunye nephutha lomngxuma we-flange bolt kufuneka ube phakathi koluhlu lwexabiso elivumelekileyo. I-valve kunye nomgca wesikhungo sombhobho kufuneka uhambelane phambi kokufakwa.
(3) Xa udibanisa ama-flanges amabini, okokuqala, i-flange yokutywina ubuso kunye ne-gasket kufuneka icinezelwe ngokulinganayo, ukwenzela ukuba kuqinisekiswe ukuba i-flange idibaniswe nguxinzelelo olufanayo lwe-bolt.
(4) Xa uqinisa iibholithi, sebenzisa isitshixo esihambelana nendongomane. Xa usebenzisa uxinzelelo lweoli kunye nezixhobo ze-pneumatic zokuqinisa, qaphela ukuba ungadluli i-torque echaziweyo.
(5) Ukuqiniswa kweflange kufuneka kuphephe amandla angalinganiyo, kwaye kufuneka kuqiniswe ngokulandelelana kwindlela yokulinganisa kunye nokuhambelana.
(6) Emva kokufakwa kweflange, qiniseka ukuba zonke iibholiti kunye namantongomane ziqinile kwaye zifana.
(7) Impahla yeebholiti kunye namantongomane kufuneka ihlangabezane nemimiselo. Emva kokuqinisa, intloko ye-bolt kufuneka ibonakaliswe kwi-nut ye-pitch ezimbini ezifanelekileyo.
(8) I-Bolt kunye ne-screw fastening, ukwenzela ukuthintela ukungcangcazela okubangelwa ukukhulula, ukusebenzisa i-gaskets. Ukuze ugweme ukunamathela phakathi kweentambo kwiqondo lokushisa eliphezulu, iinxalenye zentambo kufuneka zifakwe kwi-agent echasene ne-adhesion (molybdenum disulfide) ngexesha lofakelo.
(9) Kwiivalvu zobushushu obuphezulu obungaphezulu kwama-300 degrees celcius, emva kokuba iqondo lobushushu linyukile, iibholithi zoqhagamshelo lweflange, iibholithi zokuvala izivalo zevalve, iibholiti zokuvala uxinzelelo kunye neebholiti zokuvala zoxinzelelo kufuneka ziqiniswe kwakhona.
(10) Ivalve yobushushu obuphantsi ifakwe kwimeko yobushushu be-atmospheric. Kwisicelo esisebenzayo, xa i-medium idlula, iba yimeko yobushushu obuphantsi. Ngenxa yokwakheka umahluko lobushushu, flanges, gaskets, iibholiti kunye namantongomane, njalo njalo, shwabanisa, kwaye ngenxa yokuba izinto ezi nxalenye azifani, i-coefficient yokwandiswa kwe-linear nayo yahlukile, yenza ukuba kube lula kakhulu ukuvuza iimeko zokusingqongileyo. Ukususela kwiimeko ezahlukeneyo zenjongo, xa uqinisa iibholithi kwiqondo lokushisa lomoya, kuyimfuneko ukwamkela i-torque ethathela ingqalelo izinto ezinqamlekileyo zenxalenye nganye kwiqondo lokushisa eliphantsi.
Ixesha lokuposa: Sep-06-2022
