I-hydrogen ewuketshezi inezinzuzo ezithile zokugcina nokuhamba. Uma kuqhathaniswa ne-hydrogen, i-hydrogen ye-liquid (LH2) ine-density ephezulu futhi idinga ingcindezi ephansi yokugcina. Kodwa-ke, i-hydrogen kufanele ibe -253 ° C ukuze ibe uketshezi, okusho ukuthi kunzima impela. Amazinga okushisa aphansi kakhulu kanye nobungozi bokuvutha ama-hydrogen awuketshezi okuphakathi okuyingozi. Ngalesi sizathu, izindlela eziqinile zokuphepha kanye nokuthembela okuphezulu kuyizidingo ezingaphenduki lapho ziklama ama-valves ezicelo ezifanele.
NguFadila Khelfaoui, Frédéric Blanquet
IVelan Valve (Velan)
Izicelo ze-hydrogen (LH2).
Njengamanje, i-hydrogen ewuketshezi iyasetshenziswa futhi izamile ukusetshenziselwa izikhathi ezahlukahlukene ezikhethekile. E-aerospace, ingasetshenziswa njenge-rocket Launch Fuel futhi ingakhiqiza namagagasi okuthuthumela emihubheni yomoya we-transonic. Ixhaswe yi- "BIG Science," i-liquid hydrogen isiphenduke izinto ezibalulekile ezinhlelweni ezinhle kakhulu, amashevu wezinhlayiyana, kanye namadivayisi we-nuclear fusion. Njengoba isifiso sabantu sentuthuko esimeme sikhula, i-hydrogen ewuketshezi isetshenziswe njengophethiloli ngamaloli nemikhumbi eminingi nangaphezulu eminyakeni yamuva. Kulezi zimo ezingenhla zesicelo, ukubaluleka kwama-valve kusobala kakhulu. Ukusebenza okuphephile futhi okuthembekile kwama-valves kuyingxenye ebalulekile ye-ecosystem yokunikezela nge-hydrogen chain chain ewuketshezi (ukukhiqizwa, izinto zokuhamba, ukugcinwa nokusatshalaliswa). Ukusebenza okuhlobene ne-ydrogen ewuketshezi kuyinselele. Ngaphezulu kweminyaka engama-30 yesipiliyoni esisebenzayo kanye nobungcweti emkhakheni wama-valves asebenza kakhulu phansi ku-to-272 ° C, uVelan ubandakanyeke kumaphrojekthi ahlukahlukene wokuqamba isikhathi eside, futhi kuyacaca ukuthi iwine izinselelo zezobuchwepheshe zensizakalo yayo.
Izinselelo Esigabeni Sokuklama
Ingcindezi, izinga lokushisa kanye nokuhlushwa kwe-hydrogen konke kunezinto ezinkulu ezihlolisiswe ekuhlolweni kobungozi be-valve design. Ukuze usebenze kahle ukusebenza kwe-valve, design kanye nokukhethwa kwezinto ezibonakalayo Dlala indima enqumayo. Ama-valve asetshenziswa ku-liquid hydrogen application abhekana nezinselelo ezengeziwe, kufaka phakathi imiphumela emibi ye-hydrogen kwizinsimbi. Emazingeni okushisa aphansi kakhulu, izinto ze-valve akumele zikwazi ukumelana nokuhlaselwa kwama-molekyuli e-hydrogen (ezinye izindlela zokuwohloka ezihambisana nezemfundo), kepha kufanele futhi zilondoloze ukusebenza okujwayelekile isikhathi eside ngomjikelezo wazo wokuphila. Ngokwezinga lamanje lentuthuko yezobuchwepheshe, imboni inolwazi olulinganiselwe lokusebenza kwezinto ezingezona zensimbi kuzinhlelo zokusebenza ze-hydrogen. Lapho ukhetha impahla yokubopha uphawu, kuyadingeka ukuthatha le nkomba. Ukubekwa uphawu okusebenzayo nakho kuyindlela yokusebenza ebalulekile yokusebenza. Kukhona umehluko wokushisa ocishe abe ngu-300 ° C phakathi kwama-hydrogen awuketshezi kanye nokushisa okukhona (okushisa kwegumbi), okuholela ekushiseni kwe-gradient. Ingxenye ngayinye ye-valve izobhekana namazinga ahlukene wokunwebeka nokuwohloka. Lokhu kungafani kungaholela ekuvuzeni okuyingozi kwezindawo zokubopha ezibucayi. Ukuqina kokubopha kwesiqu se-valve nakho kungukugxila kokwakheka. Inguquko evela kubanda kuya ekushiseni idala ukugeleza kokushisa. Izingxenye ezishisayo zendawo yeBonnet Cavity zingaqhakaza, ezingaphazamisa ukusebenza uphawu kokubopha futhi zithinte ukusebenza kwe-valve. Ngaphezu kwalokho, izinga lokushisa eliphansi kakhulu le--253 ° C lisho ukuthi ubuchwepheshe obuhle kakhulu bokungena kokufakwa buyakuqinisekisa ukuthi i-valve ingakwazi ukugcina i-hydrogen ye-liquid kulokhu kushisa ngenkathi kunciphisa ukulahleka okubangelwa ukubila. Uma nje kukhona ukushisa okudluliselwe ku-hydrogen ewuketshezi, kuzoshintshana nokuvuza. Hhayi lokho kuphela, ukukhiqizwa kwe-oksijini kwenzeka endaweni ephukile yokufakelwa. Lapho umoya-mpilo uthintana ne-hydrogen noma amanye ama-combustible, ubungozi bokukhuphuka komlilo. Ngakho-ke, uma kucatshangelwa ingozi yomlilo yokuthi ama-valves angahle abhekane nawo, ama-valves kumele aklanywe ngezinto zokufaka izivivinyo engqondweni, kanye nabasebenzayo abangamelana nomlilo, ithuluzi nezintambo, konke okunezitifiketi eziqine kakhulu. Lokhu kuqinisekisa ukuthi i-valve isebenza kahle uma kwenzeka umlilo. Ingcindezi eyandayo nayo iyingozi engahle ibe khona enikeza ama-valves angasebenzi. Uma i-hydrogen ewuketshezi ibanjiswa emgodini womzimba we-valve kanye nokudluliswa kokushisa kanye nokuhwamuka kwe-hydrogen kuvela ngasikhathi sinye, kuzodala ukwanda kwengcindezi. Uma kunomehluko omkhulu wengcindezi, i-cavitation (cavitation) / umsindo wenzeka. Lezi zigameko zingaholela ekupheleni ngaphambi kwesikhathi kwempilo yenkonzo ye-valve, futhi silahlekelwe kakhulu ngokulahlekelwa okukhulu ngenxa yenqubo yenqubo. Kungakhathalekile ukuthi izimo ezithile ezisebenzayo, uma lezi zinto ezingenhla zingabhekwa ngokuphelele futhi eziphikisayo ezihambisanayo zingathathwa kwinqubo yokuqamba, kungaqinisekisa ukusebenza okuphephile nokuthembekile kwe-valve. Ngaphezu kwalokho, kunezingqinamba zokwakhiwa ezihlobene nezinkinga zemvelo, njengokuvuza okubalekayo. I-Hydrogen ihlukile: ama-molecule amancane, angenamibala, anamakha, nokuqhuma. Lezi zici zinquma isidingo esiphelele sokuvuza kwe -ro.
ENyakatho Las Vegas West Coast Hydrogen Liqufaction Station,
Onjiniyela be-Wieland Valve bahlinzeka ngezinsizakalo zezobuchwepheshe
Izixazululo ze-valve
Kungakhathalekile ukuthi uluphi umsebenzi nohlobo oluthile, ama-valves azo zonke izinhlelo zokusebenza ze-ydrogen kufanele ahlangabezane nezinye izidingo ezivamile. Lezi zidingo zifaka phakathi: okuqukethwe kwengxenye yesakhiwo kumele kuqinisekiswe ukuthi ubuqotho bezinhlekelele bugcinwa emazingeni okushisa aphansi kakhulu; Zonke izinto zokwakha kufanele zibe nezindawo zokuphepha zomlilo zemvelo. Ngesizathu esifanayo, izinto zokubekwa uphawu kanye nokupakishwa kwama-perful hydrogen ama-valves kumele futhi ahlangabezane nezidingo eziyisisekelo ezishiwo ngenhla. Insimbi ye-Austenitic engagqwali iyisitayela esifanelekile sama-valves e-ydrogen. Inamandla amahle kakhulu, ukulahleka okushisa okuncane, futhi kungamelana nama-gradients amakhulu okushisa. Kukhona ezinye izinto zokwakha ezilungele izimo ze-hydrogen eziwuketshezi, kepha zikhawulelwe ezimweni ezithile zenqubo. Ngaphezu kokukhethwa kwezinto zokwakha, eminye imininingwane yokuklama akufanele inganakwa, njengokunweba isiqu se-valve bese usebenzisa ikholomu yomoya ukuvikela ukupakishwa kokubekwa uphawu okuvela emazingeni okushisa aphansi. Ngaphezu kwalokho, ukunwetshwa kwesiqu se-valve kungafakwa ngendandatho yokufakelwa ukuze ugweme ukubekezelela. Ukuqamba ama-valve ngokuya ngezimo ezithile zohlelo lokusebenza kusiza ukunikeza izixazululo ezinengqondo ngokwengeziwe ezinseleleni ezahlukahlukene zezobuchwepheshe. UVellan unikeza ama-butterfly ama-valves emiklamo emibili ehlukene: ama-vertfly wensimbi e-eccentric e-eccentric e-eccentric Yomibili imiklamo inekhono lokugeleza kwe-bitirectional. Ngokuklama ukwakheka kwe-disc kanye nokujikeleza kwe-trajectory, kungatholakala uphawu oluqinile. Akukho ndawo emzimbeni we-valve lapho kungekho okuphakathi nendawo. Endabeni ye-Velan Double Eccentric Butterfly Valfly Valve, yamukela i-Disc Eccentric Rotation Design, ehlanganiswe nohlelo oluhlukile lwe-Velflex Searing, ukufezekisa ukusebenza okuhle kakhulu kwe-valve. Lo mklamo onelungelo lobunikazi ungamelana nokushintshashintsha kwezinga lokushisa elikhulu eValve. I-Torqseal Triple Eccentric disc nayo ine-trajectory eklanyelwe ngokukhethekile esiza ukuqinisekisa ukuthi indawo yokubekwa uphawu kwe-disc ithinte kuphela isihlalo ngesikhathi sokufinyelela isikhundla se-valve evaliwe futhi akwenzi. Ngakho-ke, i-torque yokuvala ye-valve ingashayela i-disc ukuze ifinyelele ezihlalweni ezithobelayo, futhi ikhiqize umphumela olwanele we-wedge endaweni evaliwe ye-valve, ngenkathi enza i-disc ukuxhumana ngokulinganayo kuyo yonke indawo yokugcina uphawu lwesivalo. Ukuthobela isihlalo se-valve kuvumela umzimba we-valve ne-disc ukuze ube nomsebenzi "wokuzilingisa", ngaleyo ndlela ugweme ukuthathwa kwe-disc ngesikhathi sokushintshashintsha kwezinga lokushisa. I-caft eqinisiwe ye-stacked valve valve iyakwazi ukusebenza ngemijikelezo ephezulu yokusebenza futhi isebenza kahle emazingeni okushisa aphansi kakhulu. I-Velflex Double Eccentric Design ivumela i-valve ukuthi isetshenziswe online ngokushesha futhi kalula. Ngenxa yezindlu eziseceleni, isihlalo ne-disc kungahlolwa noma kusetshenziswe ngqo, ngaphandle kwesidingo sokuhlakaza umbhali noma amathuluzi akhethekile.
I-Tianjin Tanggu Amanzi-Seal-Seal-Seal Valve Co, Ltdbasekela ama-valve aphezulu we-technology advances advance ahleliwe, kufaka phakathi ukuhlala phansiwafer valve butterfly, I-valve ye-lug butterfly, I-Flange uvemvane uvemvane uvemvane, I-flange ye-flange uvemvane uvemvane,Y-strainer, ukulinganisa i-valve,I-Valur Plate Plate Check Valve, njll.
Isikhathi sePosi: Aug-11-2023
