Izinyathelo zokuphepha zokufakwa nokusebenza kokusebenza kwe-valve yepulasitiki ye-anticorrosive fluorine Yini okufanele inakwe lapho kufakwa i-valve yegesi ewuketshezi

Izindlela zokuphepha zokufakwa nokusebenza kokusebenza kwevalvu yepulasitiki ye-fluorine evimbela ukubola Okufanele kuqashelwe lapho kufakwa i-valve yegesi ewuketshezi Iphampu yepulasitiki enomugqa we-anticorrosive fluorine iyiphampu evimbela ukubola evame ukusetshenziswa ekudluliseni uketshezi olubolayo njenge-asidi, i-alkali nosawoti. Ngesikhathi esifanayo, lapho usebenzisa iphampu ene-fluorine, ipayipi le-valve elixhumayo kufanele futhi libe yi-anticorrosive. Yini okudingeka inakwe ekusebenzeni kwenkonzo nokufakwa kwe-fluorine lined plastic valve? Ukukhetha okunengqondo nokusetshenziswa kwe-valve yepulasitiki elwa nokugqwala kwe-fluorine, wonke umuntu UQAPHELA enkingeni yobunjiniyela, iphampu yepulasitiki eyi-fluorine evimbela ukubola kanye ne-valve ku-petroleum, imboni yamakhemikhali, imithi, i-metallurgy, izimboni zamandla kagesi ezinamandla okugqwala okufana nedivayisi yokuxhumana ye-acid-base. isetshenzisiwe, kodwa indlela yokukhetha okuhle, ngama-valve epulasitiki e-fluorine amahle, ngokusho kwamakhasimende ethu iminyaka eminingi yokuhlangenwe nakho kwesicelo sensimu, lezi zinyathelo zokuphepha ezilandelayo kufanele zibekwe phambili ukuze kusetshenziswe izinga lokushisa eliphakathi nendawo, ingcindezi, umehluko wengcindezi kanye nokunye. izimo lapho i-valve elwa nokugqwala ene-fluorine ikhethiwe: 1, efakwe i-fluorine valve yepulasitiki esebenzisa izimo eziphakathi Isimo esiphakathi se-fluorine valve yepulasitiki enomugqa akufanele ibe nezinhlayiya eziqinile, amakristalu, ukungcola, njll., ukuze ingagugi I-fluorine lined plastic layer noma i-PTFE bellows ye-valve core kanye nesihlalo se-valve ekusebenzeni kokuvula nokuvala. I-medium inezinhlayiya ezinzima, amakristalu, ukungcola, ukukhetha, i-spool, isihlalo singasetshenziswa ku-Hastelloy. 2, olahlwe fluorine plastic valve lokushisa medium. Ifakwe i-fluorine plastic valve, ipulasitiki ye-fluorine ingu-F46 (FEP), ukusetshenziswa kwezinga lokushisa eliphakathi akukwazi ukudlula i-150 ℃ (izinga lokushisa eliphakathi nendawo lingaba ngu-150 ℃ isikhathi esifushane, izinga lokushisa lokusebenzisa isikhathi eside kufanele lilawulwe ngaphakathi kwe-120 ℃), ngaphandle kwalokho. , i-valve yengxenye ngayinye ye-F46 kulula ukuthambisa, ukuguqulwa, okuholela ekuvaleni kwe-valve, ukuvuza okukhulu. Uma izinga lokushisa eliphakathi lisetshenziswa isikhathi esifushane, izinga lokushisa lingaphansi kwe-180 ° C, futhi izinga lokushisa lingaphansi kwe-150 ° C isikhathi eside, kungase kukhethwe olunye uhlobo lwe-fluoroplastic-PFA, kodwa umugqa we-PFA fluoroplastic ubiza kakhulu. kunomugqa we-F46 ngentengo, futhi ukukhethwa kwempahla yepompo yocingo kuyafana. 3, ungabi nengcindezi engemihle. I-valve yepulasitiki enomugqa we-fluorine kufanele igweme ukusetshenziswa komfutho ongemuhle epayipini, uma kukhona ingcindezi engemihle, kulula ukubangela ukuthi ungqimba lwepulasitiki olufakwe ku-fluorine ludonswe ngaphandle (ukukhipha isigubhu), ukuxebuka, okuholela ekuvulekeni nasekuhlulekeni kokuvala. . I-4, efakwe ivalvu elawulayo yepulasitiki ye-fluorine kufanele ihambisane nokugeleza okudingekayo (inani le-Cv) ukukhetha okulungile kosayizi we-valve yobubanzi. Lapho ukhetha, uma ngokwesidingo sethrafikhi (i-Cv) kanye neminye imingcele yobuchwepheshe kubalwa usayizi we-valve kufanele kukhethwe futhi ukuvulwa kwe-valve, njengosayizi we-valve enkulu kakhulu, ngokuqinisekile kuzokwenza i-valve ekuvuleni isikhathi eside. isikhathi sisebenza, ngaphansi kwesimo sokucindezela okuncane nokuphakathi, kulula kakhulu ukwenza umgogodla we-valve nenduku ye-valve ngomthelela wabezindaba futhi wenze i-valve idlidlize, I-valve core rod in the medium isikhathi eside ngaphansi komthelela, ngisho izokwenza i-valve stem fracture. I-5, ingcindezi, umehluko wengcindezi kufanele ilawulwe ngaphakathi kwebanga elivumelekile. Ikakhulukazi i-bellows seal efakwe i-fluorine plastic regulating valve, i-globe valve. Ngenxa yokuthi ama-bellows ayenziwe ngezinto ze-tetrafluoric, umehluko wengcindezi nokucindezela mkhulu, okungaholela kalula ekuqhumeni kwe-bellows. Bellows seal lined fluorine plastic elawula valve, ukusetshenziswa isimo ingcindezi, ingcindezi umehluko mkhulu, ingashintshwa ukuze PTFE ukupakisha uphawu. Isaziso sokufakwa kwevalvu ye-LPG ukuthi i-valve ye-LPG iyi-valve yokuvala ephoqelelwe, ngakho-ke lapho i-valve ivaliwe, ukucindezela kufanele kufakwe kudiski ye-valve ukuze kuphoqeleke indawo yokuvala ukuthi ingavuzi. Lapho i-medium ingena ku-valve isuka ngaphansi kwe-disc, ukumelana okufanele kunqotshwe amandla okusebenza amandla okungqubuzana kwesiqu nokupakisha kanye nokucindezela okukhiqizwa ukucindezela kwe-medium. Amandla okuvala i-valve makhulu kunamandla okuvula i-valve, ngakho ububanzi be-valve stem bukhulu, ngaphandle kwalokho iphutha le-stem top bend lizokwenzeka. Yini okufanele siyinake lapho sifaka i-valve yegesi eyi-liquefied? I-Xiaobian eku-inthanethi yevalvu izokuphendulela yona. I-valve ye-LPG iyi-valve yokuvala ephoqelelwe, ngakho-ke lapho i-valve ivaliwe, ukucindezela kufanele kufakwe ku-disc ukuze kuphoqeleke indawo yokuvala ukuthi ingavuzi. Lapho i-medium ingena ku-valve isuka ngaphansi kwe-disc, ukumelana okufanele kunqotshwe amandla okusebenza amandla okungqubuzana kwesiqu nokupakisha kanye nokucindezela okukhiqizwa ukucindezela kwe-medium. Amandla okuvala i-valve makhulu kunamandla okuvula i-valve, ngakho ububanzi be-valve stem bukhulu, ngaphandle kwalokho iphutha le-stem top bend lizokwenzeka. Yini okufanele siyinake lapho sifaka i-valve yegesi eyi-liquefied? I-Xiaobian eku-inthanethi yevalvu izokuphendulela yona. Amanothi okufakwa nokugcinwa kwe-valve yegesi ewuketshezi: Ivalvu yokumisa ipayipi lokusanhlamvu esebenza ngesondo lesandla nesibambo ingafakwa kunoma iyiphi indawo epayipini. Isondo lesandla, isibambo kanye nendlela yokuphakamisa akuvunyelwe ukusetshenziselwa ukuphakamisa. Ukugeleza kwe-medium kuzohambisana nesiqondiso somcibisholo oboniswe emzimbeni we-valve. I-valve yegesi ewuketshezi, eyaziwa nangokuthi isitobhi somnyango, iwuhlobo lwevalvu esetshenziswayo. Kuyathandwa ngoba ukungqubuzana phakathi kwendawo yokuvala ngesikhathi sokuvula nokuvala kuncane, kuhlala isikhathi eside, ukuphakama kokuvula akukukhulu, kulula ukukhiqiza, ukugcinwa okulula, akufanelekile kuphela ukucindezela okuphakathi nokuphansi, kodwa futhi kufanelekile umfutho ophezulu. Umgomo wayo wokuvala ukuncika ekucindezelweni kwebha ye-valve, ukuze indawo yokuvala i-valve disc kanye nendawo yokuvala isihlalo ivaleke, ivimbele ukugeleza kwemidiya. I-valve ye-LPG ivumela kuphela ukugeleza okukodwa kokuphakathi futhi inokuqondisa lapho ifakiwe. Ubude bayo besakhiwo bude kune-valve yesango, ngesikhathi esifanayo, ukumelana noketshezi kukhulu, ukusebenza isikhathi eside, ukwethembeka kokubeka uphawu akunamandla. Amavalvu e-LPG ahlukaniswe izigaba ezintathu: iqonde phakathi, i-engeli yesokudla kanye namavalvu embulunga etshekile agelezayo. Lapho kuvulwa i-valve ye-LPG, Ukuphakama kokuvula kwediski ye-valve kungu-25% ~ 30% we-diameter yegama, futhi izinga lokugeleza selifinyelele endaweni enkulu kakhulu, ebonisa ukuthi i-valve ifinyelele endaweni evulekile ngokugcwele. Ngakho-ke indawo evulekile egcwele ye-valve yembulunga kufanele inqunywe ngokushaya kwediski ye-valve.