Amavalvu esango ajwayelekile ngokuvamile abhekisela kumavalvu esango aqinile. Lesi sihloko sihlaziya ngokuningiliziwe umehluko phakathi kwamavalvu esango aqinile kanye namavalvu esango avamile. Uma wanelisekile ngempendulo, sicela ushayele i-VTON isithupha phezulu.
Kalula nje, amavalvu esango athambile aqinile ayizimbobo phakathi kwezinsimbi nezingezona izinsimbi, njenge-nylon\tetrafluoroethylene, kanti amavalvu esango aqinile ayizimbobo phakathi kwezinsimbi nezinsimbi;
Amavalvu esango avaliwe kamnandi kanye namavalvu esango avaliwe kamnandi abhekisela ezintweni zokuvala zesihlalo sevalvu. Izivalo eziqinile zifakwe kahle ngezinto zesihlalo sevalvu ukuqinisekisa ukunemba okuhambisanayo ne-valve core (ibhola), ngokuvamile insimbi engagqwali kanye nethusi. Izivalo ezithambile zibhekisela ezintweni zokuvala ezifakwe esihlalweni sevalvu njengezinto ezingezona ezensimbi. Ngenxa yokuthi izinto zokuvala ezithambile zinokunwebeka okuthile, izidingo zokunemba kokucubungula ziphansi kakhulu kunezivalo eziqinile. Sibhekisela ezicini ze-VTON ukuchaza umehluko phakathi kwamavalvu esango avaliwe kamnandi kanye namavalvu esango avaliwe kamnandi angenisiwe.
1. Izinto zokuvala
1. Izinto zokuvala zalezi zinto ezimbili zihlukile.Amavalvu esango avaliwe kahlengokuvamile zenziwa ngerabha noma i-polytetrafluoroethylene. Amavalvu esango avaliwe ngokuqinile enziwe ngezinsimbi ezifana nensimbi engagqwali.
2. Ukuvalwa okuthambile: Umbhangqwana wokuvalwa wenziwe ngezinto zensimbi ngakolunye uhlangothi kanye nezinto ezithambile ezingezona ezensimbi ngakolunye uhlangothi, okubizwa ngokuthi “ukuvalwa okuthambile”. Lolu hlobo lokuvalwa lusebenza kahle ekuvaleni, kodwa alumelani nokushisa okuphezulu, kulula ukuligqoka, futhi lunezakhiwo ezimbi zemishini. Isibonelo: irabha yensimbi; i-tetrafluoroethylene yensimbi, njll. Isibonelo, uphawu lwesihlalo oluthambile olungenisiwei-valve yesangoI-VTON ngokuvamile isetshenziswa ekushiseni okungaphansi kuka-100℃, futhi isetshenziswa kakhulu emanzini okushisa kwegumbi.
3. Ukuvalwa Okuqinile: Umbhangqwana wokuvalwa wenziwe ngezinto zensimbi noma ezinye izinto eziqinile kuzo zombili izinhlangothi, okubizwa ngokuthi “ukuvalwa okuqinile”. Lolu hlobo lokuvalwa alusebenzi kahle ekuvaleni, kodwa luyamelana nokushisa okuphezulu, ukuguguleka futhi lunezakhiwo ezinhle zemishini. Isibonelo: insimbi yensimbi; ithusi lensimbi; i-graphite yensimbi; insimbi ye-alloy yensimbi; (insimbi lapha ingaba yinsimbi ephonswe, insimbi ephonswe, insimbi ye-alloy nayo ingaba phezulu, i-alloy efuthwe). Isibonelo, i-valve yesango lensimbi engagqwali engenisiwe ye-VTON ingasetshenziswa umusi, igesi, uwoyela namanzi, njll.
2. Ubuchwepheshe bokwakha
Indawo yokusebenza embonini yemishini iyinkimbinkimbi, eminingi yayo inezinga lokushisa eliphansi kakhulu kanye nokucindezela okuphansi, enokumelana okukhulu kanye nokugqwala okunamandla kwento esetshenziswayo. Manje ubuchwepheshe buthuthukile, kangangokuthi amavalvu esango avaliwe akhuthazwe kabanzi.
Ubuhlobo bobulukhuni phakathi kwezinsimbi kufanele bucatshangelwe. Eqinisweni, ivalvu yesango evalwe ngokuqinile iyafana nevalvu evalwe kancane ngoba iyisivalo phakathi kwezinsimbi. Umzimba wevalvu kudingeka uqiniswe, futhi ipuleti levalvu kanye nesihlalo sevalvu kumele kugaywe njalo ukuze kufezwe ukuvalwa. Umjikelezo wokukhiqiza wamavalvu esango evalwe kanzima mude.
3. Izimo zokusebenzisa
Umphumela wokuvala Izivalo ezithambile zingafinyelela ukuvuza okungekho, kuyilapho izivalo eziqinile zingaba phezulu noma phansi ngokwezidingo;
Izivalo ezithambile zidinga ukungashi, futhi ukuvuza kuzokwenzeka emazingeni okushisa aphezulu, kuyilapho izivalo eziqinile zingavuzi. Izivalo eziqinile zevalvu yokuvala ephuthumayo zingasetshenziswa ngaphansi komfutho ophezulu, kuyilapho izivalo ezithambile zingasetshenziswa. Ngalesi sikhathi, kudingeka ivalvu yesango evalwe ngokuqinile ye-VTON.
Izivalo ezithambile akufanele zisetshenziswe kwezinye izinto ezigqwalisayo, futhi izivalo eziqinile zingasetshenziswa;
4. Izimo zokusebenza
Izivalo eziqinile zingaba phezulu noma phansi ngokwezidingo; izivalo ezithambile kumele zingashi, kanti izivalo ezithambile zingafinyelela izivalo eziphakeme ngazinye. Ngoba emazingeni okushisa aphansi kakhulu, izivalo ezithambile zizovuza, kuyilapho izivalo eziqinile zingenalo le nkinga; izivalo eziqinile ngokuvamile zingamelana nokucindezela okuphezulu kakhulu, kuyilapho izivalo ezithambile zingenakukwazi. Isibonelo, amavalvu esango lensimbi eyenziwe ngensimbi engenisiwe ye-VTON asebenzisa izivalo eziqinile, futhi ukucindezela kungafinyelela ku-32Mpa noma ku-2500LB; izivalo ezithambile azikwazi ukusetshenziswa kwezinye izindawo ngenxa yokugeleza kwe-medium, njengeminye imithombo ebolile); ekugcineni, amavalvu e-hard seal ngokuvamile abiza kakhulu kunezivalo ezithambile. Ngokuqondene nokwakhiwa, umehluko phakathi kwalezi ezimbili awumkhulu, umehluko omkhulu isihlalo se-valve, isivalo esithambile asiyona insimbi, kanti isivalo esiqinile singensimbi.
V. Ukukhetha imishini
Ukukhethwa kophawu oluthambile noluqinileamavalvu esangoikakhulukazi kusekelwe ku-medium yenqubo, izinga lokushisa kanye nengcindezi. Ngokuvamile, uma i-medium iqukethe izinhlayiya eziqinile noma igugile noma izinga lokushisa liphakeme kunama-degrees angu-200, kungcono ukusebenzisa izivalo eziqinile. Isibonelo, umusi oshisa kakhulu ngokuvamile ucishe ube ngu-180-350℃, ngakho-ke kumele kukhethwe i-valve yesango lesivalo esiqinile.
6. Umehluko ngentengo kanye nezindleko
Ngesilinganiso esifanayo, ingcindezi kanye nezinto ezibonakalayo, kungeniswe okuvalwe ngokuqinileamavalvu esangozibiza kakhulu kunezivali zesango ezithambile ezivalwe kwamanye amazwe; isibonelo, i-valve yesango yensimbi ehlanganisiwe ye-VTON ibiza kakhulu ngo-40% kune-valve yesango yensimbi ehlanganisiwe ye-DN100 evalwe kwamanye amazwe; uma womabili ama-valve esango aqinile kanye nama-valve esango athambile angasetshenziswa ngaphansi kwezimo zokusebenza, uma ucabangela izindleko, zama ukukhetha ama-valve esango athambile avaliwe kwamanye amazwe.
7. Umehluko empilweni yenkonzo
Ukuvalwa okuthambile kusho ukuthi uhlangothi olulodwa lwesibili sokuvalwa lwenziwe ngezinto ezinobunzima obuphansi. Ngokuvamile, isihlalo sokuvala esithambile senziwe ngezinto ezingezona ezensimbi ezinamandla athile, ubulukhuni kanye nokumelana nokushisa. Sisebenza kahle ekuvaleni futhi singafinyelela ukuvuza okungenamkhawulo, kodwa impilo yaso kanye nokuzivumelanisa nokushisa kuphansi kakhulu. Ukuvalwa okuqinile kwenziwe ngensimbi futhi akunamandla okuvala aphansi kakhulu, yize abanye abakhiqizi bethi kungafinyelela ukuvuza okungenamkhawulo.
Inzuzo yezimbobo ezithambile ukusebenza kahle kokuvala, kanti ukungathandeki ukuguga kalula, ukuguguleka, kanye nokuphila isikhathi esifushane senkonzo. Izimbobo eziqinile zinempilo ende yenkonzo, kodwa ukusebenza kwazo kokuvala kuphansi uma kuqhathaniswa nezimbobo ezithambile. Lezi zinhlobo ezimbili zezimbobo zingahambisana. Ngokuphathelene nokuvala, izimbobo ezithambile zingcono kakhulu, kodwa manje ukuvala izimbobo eziqinile nakho kungahlangabezana nezidingo ezifanele.
Izivalo ezithambile azikwazi ukuhlangabezana nezidingo zenqubo yezinto ezigqwalisayo, kodwa izivalo eziqinile zingayixazulula le nkinga!
Lezi zinhlobo ezimbili zezimpawu zingaphelelisana. Ngokuphathelene nokuvala, izimpawu ezithambile zingcono kakhulu, kodwa manje ukuvala izimpawu eziqinile nakho kungahlangabezana nezidingo ezifanele!
Inzuzo yezimbobo ezithambile ukusebenza kahle kokuvala, kanti ubuthakathaka ukuguga kalula, ukuguguleka, kanye nokuphila isikhathi esifushane kwenkonzo.
Izivalo eziqinile zisebenza isikhathi eside, kodwa ukuvala kubi kakhulu kunezivalo ezithambile.
Isikhathi sokuthunyelwe: Disemba 14-2024
