Incwadana yomyalelo wofakelo lwevalvu Ufakelo nogcino lwevalvu ekwazi ukumelana nomhlwa

Incwadana yomyalelo wofakelo lwevalvu Ufakelo nogcino lwevalvu enefluorine ekwaziyo ukumelana nomhlwa Iivalvu zobushushu obuphantsi zifakelwa kwiqondo lobushushu bomoya. 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 yabo yokwandisa i-linear nayo yahlukile, yenza ukuba kube lula kakhulu ukuvuza iimeko zokusingqongileyo. Ukususela kule meko yenjongo, xa uqinisa iibholithi kwiqondo lokushisa lomoya, i-torque ethatha ingqalelo kwizinto ezinqamlekileyo zecandelo ngalinye kwiqondo lokushisa eliphantsi kufuneka lamkelwe. 1. Ukufakwa kunye nokuchithwa kweevalvu 1.1 Izilumkiso zokugcinwa kunye nokufakwa kwe-1). Ivalve kufuneka ifakwe kwigumbi elomileyo nelingena umoya, kwaye zombini iziphelo zobubanzi kufuneka zitywinwe kwaye zingabinathuli; 2). Ukugcinwa kwexesha elide kufuneka kuhlolwe rhoqo, kwaye indawo yokucubungula kufuneka ifakwe ngeoli ukukhusela ukubola; 3) Ngaphambi kokufakwa kwevalve, jonga ngokucophelela ukuba uphawu luhambelana neemfuno zokusetyenziswa; 4). Ngethuba lokufakela, indawo yangaphakathi kunye nokutywinwa kwendawo yokutywina kufuneka ihlambuluke, kwaye ukupakishwa kufuneka kuhlolwe ukuze kubonwe ukuba kugxininiswe ngokuqinileyo, kwaye iibholiti zokudibanisa kufuneka ziqiniswe ngokulinganayo. 5). I-valve kufuneka ifakwe ngokuhambelana nesikhundla esivumelekileyo sokusebenza, kodwa ingqalelo kufuneka ihlawulwe ekugcinweni nasekusebenzeni kakuhle; 6) Ekusetyenzisweni, musa ukuvula i-valve yesango ukuze ulungelelanise izinga lokuhamba, ukuze ungonakalisi indawo yokutywina xa isantya esiphakathi siphezulu, kufuneka sivuleke ngokupheleleyo okanye sivalwe ngokupheleleyo; 7). Xa uvula okanye ucima i-handwheel, ungasebenzisi ezinye iilever ezincedisayo; 8). Iindawo zokuhambisa kufuneka zithanjiswe rhoqo; I-valve kufuneka ihlale i-oyile kwindawo ejikelezayo kunye ne-stem trapezoidal thread inxalenye ye-9) Emva kokufakwa, ukugcinwa rhoqo kufuneka kuqhutywe ukucoca ukungcola kwi-cavity yangaphakathi, ukujonga indawo yokutywina kunye nokugqoka kwe-valve stem nut; 10). Kufuneka kubekho iseti yemigangatho yofakelo yobunzululwazi nechanekileyo, uvavanyo lokusebenza lokutywina kufuneka lwenziwe kugcino, kwaye iirekhodi ezineenkcukacha kufuneka zenziwe kuphando 11) Eminye imiba efuna ingqwalasela: 1) Iivalvu kufuneka zibekwe ngokubanzi phambi kofakelo lombhobho. Umbhobho kufuneka ube yindalo, isikhundla asikho ukutsala nzima, ukuze ungashiyi i-prestress; 2) Ngaphambi kokubeka i-valve yobushushu obuphantsi kufuneka ibe kangangoko kunokwenzeka kwindawo ebandayo (njenge-nitrogen engamanzi) ukwenza uvavanyo lokuvula nokuvala, ukuguquguquka kwaye akukho mcimbi we-jamming; 3) Ivalve yolwelo kufuneka imiselwe nge-Angle ye-10 ° ethambekileyo phakathi kwesiqu kunye nenqanaba ukuphepha ulwelo oluphuma ecaleni kwesikhondo kunye nokwandisa ilahleko ebandayo; Okubaluleke ngakumbi, kuyimfuneko ukuphepha ulwelo oluchukumisa umphezulu wokutywina wokupakisha, ukwenzela ukuba kubanda kwaye kube nzima kwaye kulahlekelwe umphumo wokutywinwa, okubangelwa ukuvuza; 4) ukudityaniswa kwevalve yokhuseleko kufuneka kube yingqiniba ukuphepha impembelelo ngqo kwivalve; Ukongeza ekuqinisekiseni ukuba ivalve yokhuseleko ayinaqabaka, ukuze ingasebenzi kakuhle; 5) ukufakwa kwevalve yeglowubhu kufuneka yenze indlela yokuhamba okuphakathi ihambelane notolo oluphawulwe kumzimba wevalve, ukuze uxinzelelo kwicone ephezulu yevalve xa ivalve ivaliwe, kwaye ukupakishwa kungabikho phantsi komthwalo. Kodwa akuqhelekanga ukuvulwa kunye nokuvala kwaye kufuneka uqinisekise ngokungqongqo ukuba kwimeko evaliweyo ayivuzi i-valve (njenge-valve yokufudumeza), inokuguqulwa ngokuqaphela, ngoncedo loxinzelelo oluphakathi ukuze luvale; 6) iinkcukacha ezinkulu zevalve yesango, i-valve yokulawula i-pneumatic kufuneka ifakwe ngokuthe nkqo, ukwenzela ukuba ingakhethi icala elinye ngenxa yobunzima be-spool, ukwandisa ukunxiba komatshini phakathi kwe-spool kunye ne-bushing, okubangelwa ukuvuza; 7) Xa uqinisa isikhonkwane sokucinezela, i-valve kufuneka ibe kwindawo evulekile kancinci, ukuze ingonakalisi indawo yokutywina ye-valve top; 8) Emva kokuba zonke iivalve zikhona, kufuneka zivulwe kwaye zivalwe kwakhona, kwaye zifanelekile ukuba ziguquguquka kwaye zingabambeki; 9) Emva kokuba inqaba enkulu yokwahlula umoya ipholile, i-valve flange yokudibanisa iqiniswe kwangaphambili kanye kwindawo ebandayo ukukhusela ukuvuza kwiqondo lokushisa kunye nokuvuza kwiqondo lokushisa eliphantsi; 10) Akuvumelekanga ngokungqongqo ukukhwela i-valve stem njenge-scaffold ngexesha lofakelo 11) I-valve ephezulu yokushisa ngaphezu kwe-200 ℃, kuba ukufakwa kubushushu begumbi, kwaye emva kokusetyenziswa okuqhelekileyo, ubushushu buphakama, i-bolt kukwandiswa kwe-thermal. i-gap iyanda, ngoko kufuneka iqiniswe kwakhona, ebizwa ngokuthi "i-hot tight", umqhubi kufuneka anikele ingqalelo kulo msebenzi, ngaphandle koko kulula ukuvuza. 12) Xa imozulu ibanda kwaye ivalve yamanzi ivaliwe ixesha elide, amanzi emva kwevalve kufuneka asuswe. Emva kokuba ivalve yomphunga iyeke umphunga, amanzi ajingisiweyo nawo kufuneka angabandakanywa. Umzantsi wevalve usebenza njengeplagi yocingo, enokuvulwa ukuze ikhuphe amanzi. I-13) Iivalve ezingezizo zetsimbi, ezinye zilukhuni, amandla athile aphantsi, ukusebenza, ukuvula kunye nokuvala amandla angeke abe mkhulu kakhulu, ngakumbi akakwazi ukwenza amandla. Kwakhona nikela ingqalelo ukuphepha ukungqubana kwento. I-14) Xa i-valve entsha isetyenzisiweyo, ukupakishwa akufanele kugxininiswe ngokuqinileyo ukuze kugwenywe ukuvuza, ukwenzela ukuba ugweme uxinzelelo oluninzi kwi-stem, ukukhawuleza ukugqoka, kunye nokuvula nokuvala. Ukumelana nokonakala Ufakelo nokugcinwa kwevalve ye-Fluorine elucwecweni lwe-Fluorine Ivalve yokuxhathisa umhlwa kunye nezincedisi zemibhobho yolutya, ngenxa yeempawu zazo zendalo kunye nemichiza, zinezi mpawu zilandelayo kufakelo, ukulungiswa nokugcinwa kwemveliso: Isigama kunye nenkcazo (a) uhlobo olupheleleyo lwelayini lubhekiselele kudonga lwangaphakathi lomzimba wevalvu, isigqubuthelo sevalvu kunye namanye amalungu oxinzelelo athe ngqo kumbindi. Umphandle ongaphandle kwesikhondo sevalve, ipleyiti yebhabhathane, umqhagi kunye nengqukuva kunye namanye amalungu angaphakathi aqatywe ngobunzima obuthile beplasitiki ekwazi ukumelana nomhlwa ngendlela yokubumba. Izinto ezisetyenziswa ngokuqhelekileyo ziyi-F46, F3, F2, njl njl. Ivalve ene-fluorine luhlobo lwamalungu evalve edla ngokusetyenziswa kushishino, isenoluhlu olwahlukileyo lolwahlulo, imathiriyeli yevalve enefluorine ngokwemibhobho eyahlukeneyo imathiriyeli yevalve eyahlukileyo (i-anticorrosive). impahla), masikwazise ngokweenkcukacha. Ukumelana ne-Corrosion ukumelana nokufakwa kwevalve ye-fluorine yokufakwa kunye nokugcinwa kwevalve ye-fluorine lining zithini izinto 1, i-polyene idayamitha ye-PO Indawo esebenzayo: imilinganiselo eyahlukeneyo ye-asidi kunye neetyuwa zealkali kunye nezinye izinyibilikisi eziphilayo. Ubushushu bokusebenza: -58-80 degrees Celsius. Iimpawu: Yeyona nto ifanelekileyo ye-anticorROsive emhlabeni. Isetyenziswe ngokubanzi kwi-lining yezixhobo ezinkulu kunye neengxenye zepayipi. I-2, i-polyperfluoroethylene propylene FEP(F46) Isixhobo esisebenzayo: nayiphi na i-solvent ephilayo, i-dilute okanye i-inorganic acid, i-alkali, njl., ubushushu: -50-120 degrees Celsius. Iimpawu: I-MECHANICAL, IPROPATI YOMbane kunye nozinzo lwekhemikhali ZIFANA NE-F4, KODWA I-ADVANTAGES ezigqwesileyo zizinto ezinobunzima obuphezulu, ukumelana nemozulu ebalaseleyo kunye nemitha. 3. I-Polytrifluoride PCTEF (F3) Isixhobo esisebenzayo: izinyibilikisi ezahlukeneyo ze-organic, inorganic corrosion liquid (i-oxidizing acid), ubushushu: -195-120 degrees Celsius. Iimpawu: Ukumelana nokushisa, iimpawu zombane kunye nokuzinza kweekhemikhali zingaphantsi kweF4, amandla omatshini, ubunzima bungcono kuneF4. I-4, PTFE(F4) iphakathi esebenzayo: iasidi eyomeleleyo, isiseko esomeleleyo, i-oxidant eyomeleleyo, njl njl. Sebenzisa ubushushu -50-150 degrees Celsius. Iimpawu: Ukuzinza kweekhemikhali okugqwesileyo, ukumelana nobushushu obuphezulu, ukumelana nokubanda, i-coefficient ephantsi ye-friction, yinto egqwesileyo yokuzithambisa, kodwa iipropathi eziphantsi zoomatshini, ukungahambi kakuhle kwamanzi, ukwanda okukhulu kwe-thermal. 5. I-Polypropylene RPP Isixhobo esisebenzayo: isisombululo esimanzi se-salts ye-inorganic, i-dilute okanye i-concentrated melting liquid of inorganic acids kunye ne-alkali. Ubushushu bokusebenza: -14-80 degrees Celsius. Iimpawu: Enye yeeplastiki ezikhanyayo kwisivuno sayo. Amandla okuqina kunye noxinzelelo, ubulukhuni bugqwesileyo kunye ne-polyethylene yoxinzelelo oluphantsi, inobungqongqo obubalaseleyo; Ukumelana nobushushu okulungileyo, ukubumba lula, emva kokuguqulwa kwexabiso eliphantsi, ukuhamba, ulwelo kunye ne-elastic modulus yokugoba kuphuculwe. 6, i-polyvinylidene fluoride PVDF(F2) Indawo efanelekileyo: Ukumelana neekhemikhali ezininzi kunye nezinyibilikisi. Sebenzisa ubushushu -70-100 degrees Celsius. Iimpawu: I-TENSILE AMANDLA NE-COMPRESSION STRETH THAN F4, ukugoba ukugoba, ukunyanzeliswa kwemozulu, ukuxhathisa kwi-radiation, ukumelana nokukhanya kunye nokuguga, njl., kubonakaliswe ngokuqina okulungileyo, ukubumba okulula.