Njira zodzitetezera komanso magwiridwe antchito a anticorrosive fluorine pulasitiki valavu Zomwe ziyenera kutsatiridwa pakuyika valavu yamagesi amadzimadzi.

Njira zodzitetezera ndi kagwiritsidwe ntchito ka anticorrosive fluorine pulasitiki valavu Zomwe ziyenera kutsatiridwa poyika vavu ya mpweya wa liquefied Anticorrosive fluorine lined pulasitiki mpope ndi mpope woletsa dzimbiri womwe amagwiritsidwa ntchito potumiza zinthu zamadzimadzi monga asidi, alkali ndi mchere. Nthawi yomweyo, mukamagwiritsa ntchito pampu yokhala ndi fluorine, payipi yolumikizira valavu iyeneranso kukhala anticorrosive. Ndi chiyani chomwe chiyenera kutsatiridwa pakuchita ntchito ndikuyika ma valve apulasitiki okhala ndi fluorine? Kusankhidwa koyenera ndi kugwiritsa ntchito valavu ya pulasitiki yotsutsa-kudzimbirira, aliyense AMAKHALA muvuto laumisiri, pampu ya pulasitiki ya fluorine anticorrosive pampu ndi valavu mu petroleum, makampani opanga mankhwala, mankhwala, zitsulo, mafakitale amagetsi amphamvu owononga sing'anga monga asidi-base contact device. wagwiritsidwa ntchito, koma momwe angasankhire zabwino, ndi mavavu apulasitiki abwino a fluorine, malinga ndi makasitomala athu kwa zaka zambiri zomwe zimagwiritsidwa ntchito m'munda, chenjezo lotsatirali liyenera kuperekedwa pakugwiritsa ntchito kutentha kwapakati, kuthamanga, kusiyana kwa kuthamanga ndi zina. mikhalidwe yomwe valavu yotsutsa dzimbiri ya fluorine imasankhidwa: 1, yokhala ndi valavu ya pulasitiki ya fluorine pogwiritsa ntchito zikhalidwe zapakatikati. Fluorine yokhala ndi pulasitiki wosanjikiza kapena PTFE mavuvu a valavu pachimake ndi mpando wa valve potsegula ndi kutseka. Sing'anga imakhala ndi tinthu tolimba, makhiristo, zonyansa, kusankha, spool, mpando ungagwiritsidwe ntchito ku Hastelloy. 2, alimbane ndi fluorine pulasitiki vavu sing'anga kutentha. Alimbane ndi valavu pulasitiki fluorine, fluorine pulasitiki ndi F46 (FEP), ntchito sing'anga kutentha sangathe upambana 150 ℃ (yapakati kutentha kungakhale 150 ℃ kwa nthawi yochepa, nthawi yaitali ntchito kutentha ayenera kulamulidwa mkati 120 ℃), apo ayi. , valavu ya chigawo chilichonse F46 chosavuta kufewetsa, kusinthika, zomwe zimapangitsa kuti valve itsekedwe, kutayikira kwakukulu. Ngati kutentha kwapakati kumagwiritsidwa ntchito kwakanthawi kochepa, kutentha kumakhala pansi pa 180 ° C, ndipo kutentha kumakhala pansi pa 150 ° C kwa nthawi yayitali, mtundu wina wa fluoroplastic-PFA ukhoza kusankhidwa, koma PFA fluoroplastic lining ndi yokwera mtengo kwambiri. kuposa F46 akalowa pamtengo, ndipo kusankha kwa akalowa mpope chuma ndi chimodzimodzi. 3, musakhale ndi zokakamiza zoipa. Vavu ya pulasitiki yokhala ndi fluorine iyenera kupewa kugwiritsa ntchito kukakamiza koyipa mu payipi, ngati pali kupanikizika koyipa, kosavuta kupangitsa kuti pulasitiki ya fluorine yomwe ili mumtsempha wa valve imayamwa (ng'oma kunja), kupukuta, kumapangitsa kuti valve itseguke ndikutsekeka. . 4, yokhala ndi valavu yoyendetsera pulasitiki ya fluorine iyenera kukhala molingana ndi kayendedwe kake (mtengo wa Cv) kusankha kolondola kwa kukula kwa valve. Mukasankha, malinga ndi kufunikira kwa magalimoto (Cv) ndi magawo ena aukadaulo amawerengedwa kukula kwa valavu kuyenera kusankhidwa ndi kutsegulidwa kwa valavu, monga kukula kwa valavu yayikulu kwambiri, kumapangitsa kuti valavu ikhale yotseguka kwa nthawi yayitali. Kuthamanga kwa nthawi, pansi pa zovuta zazing'ono komanso zapakatikati, zosavuta kupanga valavu pachimake ndi ndodo ya valavu ndi mphamvu ya atolankhani ndikupanga valavu kugwedezeka, Ndodo yapakati pakatikati kwa nthawi yaitali pansi pa zotsatira, ngakhale kupanga tsinde la valve kusweka. 5, kuthamanga, kuthamanga kusiyana kuyenera kuwongoleredwa mkati mwazovomerezeka. Makamaka ma bellows seal okhala ndi fluorine pulasitiki yowongolera valavu, valavu yapadziko lonse lapansi. Chifukwa mavuvu amapangidwa ndi zida za tetrafluoric, kupsinjika ndi kupanikizika kumakhala kwakukulu, komwe kungayambitse kuphulika kwa mavuvu. Bellows chisindikizo alimbane fluorine pulasitiki yoyang'anira valavu, kugwiritsa ntchito chikhalidwe kuthamanga, kuthamanga kusiyana ndi lalikulu, akhoza kusinthidwa PTFE kulongedza chisindikizo. Kuyika valavu ya LPG zindikirani zomwe valavu ya LPG ndi valavu yosindikizira yokakamiza, kotero pamene valavu yatsekedwa, kukakamiza kuyenera kuikidwa pa diski ya valve kuti ikakamize kusindikiza pamwamba kuti isadutse. Pamene sing'anga imalowa mu valve kuchokera pansi pa diski, kukana komwe kumayenera kugonjetsedwa ndi mphamvu yogwira ntchito ndi mphamvu yolimbana ndi tsinde ndi kunyamula ndi kukankhira kopangidwa ndi kukakamizidwa kwa sing'anga. Mphamvu yotseka valavu ndi yaikulu kuposa mphamvu yotsegula valavu, kotero kuti tsinde la valve ndi lalikulu, mwinamwake cholakwika cha bend pamwamba pa tsinde chidzachitika. Kodi tiyenera kulabadira chiyani poika valavu ya gasi ya liquefied? Xiaobian wa pa intaneti wa valve akuyankhani. Valve ya LPG ndi valavu yosindikizira yokakamiza, kotero pamene valavu yatsekedwa, kukakamiza kuyenera kuikidwa pa diski kuti kukakamiza kusindikiza kuti zisawonongeke. Pamene sing'anga imalowa mu valve kuchokera pansi pa diski, kukana komwe kumayenera kugonjetsedwa ndi mphamvu yogwira ntchito ndi mphamvu yolimbana ndi tsinde ndi kunyamula ndi kukankhira kopangidwa ndi kukakamizidwa kwa sing'anga. Mphamvu yotseka valavu ndi yaikulu kuposa mphamvu yotsegula valavu, kotero kuti tsinde la valve ndi lalikulu, mwinamwake cholakwika cha bend pamwamba pa tsinde chidzachitika. Kodi tiyenera kulabadira chiyani poika valavu ya gasi ya liquefied? Xiaobian wa pa intaneti wa valve akuyankhani. Zolemba pa kukhazikitsa ndi kukonza valavu ya gasi yamadzimadzi: Vavu yoyimitsa chitoliro chambewu yoyendetsedwa ndi gudumu lamanja ndi chogwirira imatha kuyikidwa pamalo aliwonse mupaipi. Magudumu am'manja, chogwirira ndi chonyamulira siziloledwa kugwiritsidwa ntchito pokweza. Kuthamanga kwa sing'anga kudzakhala kogwirizana ndi momwe muvi wasonyezera pa thupi la valve. Valavu ya gasi yamadzimadzi, yomwe imadziwikanso kuti kuyimitsa khomo, ndi mtundu wa valve yomwe imagwiritsidwa ntchito. Ndiwotchuka chifukwa kukangana pakati pa kusindikiza pamwamba pakutsegula ndi kutseka kumakhala kochepa, kumakhala kolimba, kutalika kotsegulira sikuli kwakukulu, kosavuta kupanga, kukonza kosavuta, osati koyenera kwapakati ndi kutsika kochepa, komanso koyenera kuthamanga kwambiri. Mfundo yake yotseka ndikudalira kupanikizika kwa valve bar, kuti valve disc yosindikizira pamwamba ndi mpando wosindikizira pamwamba ukhale wokwanira, kuteteza kutuluka kwa media. Valve ya LPG imangolola kuyenda kwapakati pakatikati ndipo imakhala ndi mayendedwe ikayikidwa. Mapangidwe ake kutalika ndi yaitali kuposa valavu pachipata, pa nthawi yomweyo, kukana madzimadzi ndi lalikulu, ntchito yaitali, kusindikiza kudalirika si wamphamvu. Mavavu a LPG amagawidwa m'magulu atatu: molunjika kupyola, Angle yakumanja ndi ma valve oyenda molunjika oblique globe. Pamene valve ya LPG imatsegulidwa, kutalika kotsegula kwa diski ya valve ndi 25% ~ 30% ya m'mimba mwake, ndipo kuthamanga kwathamanga kwafika pamtunda waukulu, kusonyeza kuti valve yafika pamalo otseguka. Chifukwa chake malo otseguka a valavu yapadziko lonse lapansi ayenera kutsimikiziridwa ndi kugunda kwa diski ya valve.