Imanuwali yemiyalo yokufaka ama-valve Ukufakwa nokugcinwa kwe-valve enomugqa ye-fluorine engagqwali

Imanuwali yemiyalo yokufaka ama-valvu Ukufakwa nokugcinwa kwe-valve enomugqa we-fluorine emelana nokugqwala Ama-valve okushisa aphansi afakwa ezingeni lokushisa lomoya. Ekusetshenzisweni okungokoqobo, lapho okuphakathi kudlula, kuba yisimo sokushisa esiphansi. Ngenxa yokwakhiwa komehluko wokushisa, ama-flanges, ama-gaskets, ama-bolts namantongomane, njll., ayancipha, futhi ngenxa yokuthi izinto zalezi zingxenye azifani, i-coefficient yabo yokwandisa i-linear nayo ihlukile, okwenza kube lula kakhulu ukuvuza izimo zemvelo. Kusukela kulesi simo senhloso, lapho kuqinisa ama-bolts ekushiseni komkhathi, i-torque ecabangela izici zokunciphisa ingxenye ngayinye ekushiseni okuphansi kufanele yamukelwe. 1. Ukufakwa nokuhlakazwa kwamavalvu 1.1 Izinyathelo zokuphepha zokunakekelwa nokufakwa 1). I-valve kufanele ibekwe ekamelweni elomile nelingena umoya, futhi zombili iziphetho zobubanzi kufanele zivalwe futhi zingangeni uthuli; 2). Isitoreji sesikhathi eside kufanele sihlolwe njalo, futhi indawo yokucubungula kufanele ifakwe ngamafutha ukuvimbela ukugqwala; 3) Ngaphambi kokufakwa kwe-valve, hlola ngokucophelela ukuthi uphawu luyahambisana yini nezidingo zokusebenzisa; 4). Ngesikhathi sokufakwa, indawo engaphakathi nendawo yokuvala kufanele ihlanzwe, futhi ukupakisha kufanele kuhlolwe ukuze kubonakale ukuthi kucindezelwe ngokuqinile, futhi ama-bolts okuxhuma kufanele aqiniswe ngokulinganayo. 5). I-valve kufanele ifakwe ngokuhambisana nesimo esivumelekile sokusebenza, kodwa kufanele kuqashelwe ukugcinwa nokusebenza kahle; I-6) Ekusetshenzisweni, ungavuli kancane i-valve yesango ukuze ulungise izinga lokugeleza, ukuze ungalimazi indawo yokubeka uphawu lapho izinga lokugeleza eliphakathi liphezulu, kufanele livuleke ngokugcwele noma livalwe ngokugcwele; 7). Uma uvula noma uvala isondo lesandla, ungasebenzisi ezinye izinsimbi ezisizayo; 8). Izingxenye zokudlulisela kufanele zigcotshwe njalo; I-valve kufanele ihlale igcotshwe ngamafutha engxenyeni ejikelezayo kanye nentambo ye-trapezoidal ye-stem ingxenye ye-9) Ngemva kokufakwa, ukugcinwa okuvamile kufanele kwenziwe ukuze kususwe ukungcola emgodini wangaphakathi, hlola indawo yokuvala kanye nokugqoka kwe-valve stem nut; 10). Kufanele kube nesethi yezindinganiso zokufaka zesayensi nezilungile, ukuhlolwa kokusebenza kokuvala kufanele kwenziwe ekulungisweni, futhi amarekhodi anemininingwane kufanele enziwe ukuze kuphenywe 11) Ezinye izindaba ezidinga ukunakwa: 1) Amavalvu ngokuvamile kufanele abekwe ngaphambi kokufakwa kwepayipi. Ipayipi kufanele ibe yemvelo, isikhundla asikho ukudonsa kanzima, ukuze ungashiyi i-prestress; 2) Ngaphambi kokubeka i-valve yokushisa ephansi kufanele ibe ngangokunokwenzeka esimweni esibandayo (njenge-nitrogen eyi-liquid) ukwenza ukuhlolwa kokuvula nokuvala, okuguquguqukayo futhi akukho mkhuba we-jamming; 3) Ivalvu ewuketshezi kufanele imiswe nge-engeli enyakazayo engu-10° phakathi kwesiqu kanye nezinga ukuze kugwenywe uketshezi olugeleza ngaphandle kwesiqu futhi lwandise ukulahlekelwa okubandayo; Okubaluleke nakakhulu, kuyadingeka ukugwema uketshezi oluthinta indawo yokuvala yokupakisha, ukuze kubanda futhi kube nzima futhi kulahlekelwe umphumela wokuvala, okuholela ekuvuzeni; 4) ukuxhumana kwe-valve yokuphepha kufanele kube indololwane ukugwema umthelela oqondile ku-valve; Ngaphezu kokuqinisekisa ukuthi i-valve yokuphepha ayishisi, ukuze ingasebenzi ukwehluleka; 5) ukufakwa kwe-valve yembulunga kufanele kwenze isiqondiso sokugeleza okuphakathi sihambisane nomcibisholo obhalwe emzimbeni we-valve, ukuze ukucindezela ku-valve top cone lapho i-valve ivaliwe, futhi ukupakisha akukho ngaphansi komthwalo. Kodwa ngokuvamile kuvame ukuvuleka nokuvala futhi kudingeka uqinisekise ngokuqinile ukuthi esimweni esivaliwe asivuzi i-valve (njenge-valve yokushisa), ingahlehliswa ngokucophelela, ngosizo lokucindezela okuphakathi ukuze ivalwe; 6) ukucaciswa okukhulu kwe-valve yesango, i-valve yokulawula umoya kufanele ifakwe ngokuqondile, ukuze ingakhethi uhlangothi olulodwa ngenxa yesisindo se-spool, ikhulise ukugqokwa komshini phakathi kwe-spool kanye ne-bushing, okuholela ekuvuzeni; I-7) Uma uqinisa isikulufa sokucindezela, i-valve kufanele ibe sesimweni esivulekile kancane, ukuze ingalimazi indawo yokuvala ye-valve top; 8) Ngemuva kokuthi wonke ama-valve akhona, kufanele avulwe futhi aphinde avaliwe, futhi afaneleke uma eguquguquka futhi engabambeki; 9) Ngemva kokuba umbhoshongo omkhulu wokuhlukanisa umoya upholile ungenalutho, i-valve flange yokuxhuma iqiniswe ngaphambili kanye nesimo esibandayo ukuvimbela ukuvuza ekamelweni lokushisa nokuvuza ekushiseni okuphansi; I-10) Akuvunyelwe ngokuphelele ukukhuphuka isiqu se-valve njenge-scaffold ngesikhathi sokufakwa 11) I-valve yokushisa ephezulu ngaphezu kwe-200 ℃, ngoba ukufakwa kusezingeni lokushisa elivamile, futhi ngemva kokusetshenziswa okujwayelekile, izinga lokushisa liyakhuphuka, i-bolt isandiso esishisayo, igebe liyanda, ngakho-ke kufanele liqiniswe futhi, elibizwa ngokuthi "i-hot tight", opharetha kufanele anake lo msebenzi, ngaphandle kwalokho kulula ukuvuza. I-12) Uma isimo sezulu sibanda futhi i-valve yamanzi ivaliwe isikhathi eside, amanzi ngemuva kwe-valve kufanele asuswe. Ngemuva kokuthi i-valve ye-steam imise umusi, amanzi ahlanganisiwe kufanele angafakwa. Iphansi le-valve lisebenza njengepulaki yocingo, engavulwa ukukhipha amanzi. I-13) Ama-valve angewona ama-metallic, amanye ama-brittle aqinile, amanye amandla aphansi, ukusebenza, amandla okuvula nokuvala angeke abe mkhulu kakhulu, ikakhulukazi awakwazi ukwenza amandla. Naka futhi ukuze ugweme ukungqubuzana kwento. I-14) Uma i-valve entsha isetshenziswa, ukupakisha akufanele kucindezelwe ngokuqinile ukuze kugwenywe ukuvuza, ukuze ugweme ukucindezela okukhulu esiqwini, ukusheshisa ukugqoka, nokuvula nokuvala. Ukumelana nokugqwala Ukufakwa nokugcinwa kwevalvu ye-Fluorine ulwelwesi lwama-valve Ukufakwa nokugcinwa nokugcinwa kwe-valve yongqimba lwe-fluorine I-valve emelana nokugqwala kanye nezinsiza zamapayipi zolwelwesi, ngenxa yezakhiwo zazo ezingokwemvelo namakhemikhali, zinalezi zimpawu ezilandelayo ekufakeni, ekulungiseni nasekugcinweni kahle komkhiqizo: Amagama nencazelo (a) uhlobo oluphelele lwe-lining ngokuvamile lubhekisela odongeni lwangaphakathi lomzimba we-valve, ikhava ye-valve nezinye izingxenye zokucindezela ezithintana ngqo nendawo. Ingaphandle lesiqu se-valve, ipuleti levemvane, iqhude nembulunga nezinye izingxenye zangaphakathi zimbozwe ngogqinsi oluthile lwe-valve yepulasitiki ekwazi ukumelana nokugqwala ngendlela yokubumba. Izinto ezisetshenziswa kakhulu yi-F46, F3, F2, njll. I-fluorine lined valve iwuhlobo lwezingxenye zamavalvu ezivame ukusetshenziswa embonini, isenezinto ezihlukahlukene zokuhlukanisa, i-fluorine lined valve lining material ngokusho kwepayipi elihlukile le-valve impahla (i-anticorrosive. impahla), ake sikwethule ngokuningiliziwe. Ukumelana nokugqwala ukufakwa kwevalvu yolwelwesi lwe-fluorine nokugcinwa kwevalvu ye-fluorine lining ziyini izinto zokwakha 1, ububanzi be-polyene PO Indawo esebenzayo: ukugxila okuhlukahlukene kwe-asidi nosawoti we-alkali nezinye izinyibilikisi eziphilayo. Izinga lokushisa lokusebenza: -58-80 degrees Celsius. Izici: Kuyinto ekahle anticorROsive material emhlabeni. Isetshenziswe kabanzi olwelweni lwemishini emikhulu nezingxenye zamapayipi. 2, i-polyperfluoroethylene propylene FEP(F46) Indawo esebenzayo: noma iyiphi i-organic solvent, i-dilute noma i-acid ye-inorganic egxilile, i-alkali, njll., izinga lokushisa: -50-120 degrees Celsius. Izici: IMECHANICAL, IZIMPAWU ZIKAgesi KANYE NOZINZO KOKUKHETHEKILE KUFANA NE-F4, KODWA UBUHLE obuvelele Ukuqina okuguquguqukayo okuphezulu, ukumelana nesimo sezulu esihle kakhulu kanye nemisebe. 3. I-Polytrifluoride PCTEF(F3) Indawo esebenzayo: izinyibilikisi ezihlukahlukene eziphilayo, uketshezi lwe-inorganic corrosion (i-oxidizing acid), izinga lokushisa: -195-120 degrees Celsius. Izici: Ukumelana nokushisa, izakhiwo zikagesi nokuzinza kwamakhemikhali kungaphansi kwe-F4, amandla emishini, ubulukhuni bungcono kune-F4. 4, PTFE(F4) Indawo esebenzayo: i-asidi eqinile, isisekelo esiqinile, i-oxidant eqinile, njll. Sebenzisa izinga lokushisa -50-150 degrees Celsius. Izici: Ukuzinza kwamakhemikhali okuhle kakhulu, ukumelana nokushisa okuphezulu, ukumelana nokubanda, i-coefficient ephansi ye-friction, iyinto enhle kakhulu yokuzigcoba, kodwa izakhiwo eziphansi zemishini, uketshezi olubi, ukunwetshwa okukhulu kokushisa. 5. I-Polypropylene RPP Indawo esebenzayo: isixazululo samanzi sosawoti we-inorganic, nciphisa noma ugxilise uketshezi oluncibilikayo lwama-asidi we-inorganic kanye nama-alkali. Izinga lokushisa lokusebenza: -14-80 degrees Celsius. Izici: Enye yamapulasitiki alula ngesivuno sayo. Amandla aqinile futhi acindezelayo, ubulukhuni buhle kakhulu nge-polyethylene yokucindezela okuphansi, inokuqina okuvelele kakhulu; Ukumelana nokushisa okuhle, ukubumba okulula, ngemuva kokuguqulwa kokushibhile okuhle kakhulu, i-motility, i-fluidity kanye ne-elastic modulus yokugoba iyathuthukiswa. 6, i-polyvinylidene fluoride PVDF(F2) Indawo efanelekile: Imelana namakhemikhali amaningi nezincibilikisi. Sebenzisa izinga lokushisa -70-100 degrees Celsius. Izici: AMANDLA E-TENSILE KANYE NAMANDLA WOKUCINDISA KUNE-F4, ukumelana nokugoba, ukumelana nesimo sezulu, ukumelana nemisebe, ukumelana nokukhanya nokuguga, njll., kubonakala ngokuqina okuhle, ukubumba okulula.