I-hydrogen lesemantini inetinzuzo letitsite ekugcineni nasekutfutseni. Nawucatsanisa ne hydrogen, ihydrogen lengemanti (LH2) inekucina lokusetulu futsi idzinga umfutfo lophansi wekugcina. Nomakunjalo, ihydrogen kumele ibe ngu -253°C kutsi ibe nguketshezi, lokusho kutsi kumatima kakhulu. Emazinga ekushisa laphansi kakhulu kanye nebungoti bekuvutsa kwenta ihydrogen lengemanti ibe yintfo leyingoti. Ngalesizatfu, tindlela tekuphepha leticinile kanye nekwetsembeka lokusezingeni leliphakeme kutidzingo letingayekeli uma uklama emavalvu eticelo letifanele.
NguFadila Khelfaoui,
Ivalvi yeVelan (iVelan)
Kusetjentiswa kwe-hydrogen lesemantini (LH2).
Kwanyalo, i-hydrogen lesemantini iyasetjentiswa futsi izama kusetjentiswa etikhatsini letehlukahlukene letikhetsekile. Emkhatsini wemoya, ingasetjentiswa njengephethiloli yekwetfula i-rocket futsi ingaphindze ikhicite emagagasi ekushaywa emihubheni yemoya ye-transonic. Ngekusekelwa “yisayensi lenkhulu,” i- hydrogen lengemanti seyibe yintfo lebalulekile etinhlelo letihamba ngemandla lamakhulu, tintfo letisheshisa tinhlayiya, kanye netintfo tekuhlanganisa tintfo tenuzi. Njengobe sifiso sebantfu sekutfutfuka lokusimeme sikhula, i-hydrogen lesemantini isetjentiswe njengephethiloli ngemaloli kanye nemikhumbi leminyenti kuleminyaka yamuva. Kuletindzawo letingenhla tesicelo, kubaluleka kwemavalvu kusobala kakhulu. Kusebenta lokuphephile nalokwetsembekile kwemavalvu kuyincenye lebalulekile yeluhlelo lwemvelo lwekuniketa i-hydrogen lesemantini (kukhicita, kutfutsa, kugcina kanye nekusabalalisa). Imisebenti lehambisana ne-hydrogen lesemantini iyinsayeya. Ngeminyaka lengetulu kwalengu-30 yekusebenta kanye nebungcweti emkhakheni wemavalvu lasebenta ngendlela lesetulu phansi ku -272°C, iVelan beyibandzakanyeka kumaphrojekthi lehlukahlukene ekusungulwa sikhatsi lesidze, futsi kuyacaca kutsi incobe tinsayeya tebuchwepheshe tenkonzo ye-hydrogen lesemantini ngemandla ayo.
Tinsayeya esigabeni sekuklama
Kucindzeteleka, kushisa kanye nekugcwala kwe hydrogen konkhe tintfo letinkhulu letihlolwa ekuhloleni bungoti bekwakhiwa kwe valve. Kute kwentiwe kahle kusebenta kwevalve, umklamo kanye nekukhetsa tintfo kudlala indzima lejubako. Emavalvu lasetjentiswa ekusebentiseni i-hydrogen lesemantini abukene netinsayeya letengetiwe, kufaka ekhatsi imiphumela lemibi ye-hydrogen etinsimbini. Emazinga ekushisa laphansi kakhulu, tintfo te valve akukafaneli timelane nekuhlaselwa kwema molecule e hydrogen kuphela (letinye tindlela tekubola letihambisanako tisaphikiswana ngato etifundvweni), kepha kumele tiphindze tigcine kusebenta lokujwayelekile sikhatsi lesidze ngetulu kwemjikeleto wato wekuphila. Ngekuya kwelizinga lamanje lekutfutfukiswa kwetebucwepheshe, lemboni inelwati loluncane lwekusebenta kwetintfo letingekho tensimbi ekusebentiseni i-hydrogen. Uma ukhetsa impahla yekuvala, kuyadzingeka kutsi ucabangele lesi sici. Kuvala ngemphumelelo kuphindze kube yindlela lebalulekile yekusebenta kwekuklama. Kukhona umehluko wekushisa locishe ube ngu 300°C emkhatsini we hydrogen lengemanti kanye nekushisa lokukhona (kushisa kweligumbi), lokuholela ekushiseni lokugucukako. Ingcenye ngayinye yevalve itawubhekana netigaba letehlukene tekwandziswa kwekushisa kanye nekuncipha. Lokungahambisani kungaholela ekuvuteni lokuyingoti kwetindzawo letibucayi tekuvala. Kucina kwekuvala kwesicu sevalve nako kugcila ekuklameni. Kugucuka kusuka emakhazeni kuya ekushiseni kwenta kugeleta kwekushisa. Tincenye letishisako tendzawo yembobo yebhonethi tingabandza, lokungaphazamisa kusebenta kwekuvala sicu futsi kuthinte kusebenta kwe valve. Ngekwengeta, lokushisa lokuphansi kakhulu kwa -253°C kusho kutsi bucwepheshe lobuhle bekuvikela buyadzingeka kwentela kucinisekisa kutsi le valve ingagcina ihydrogen lesemantini kulelizinga lekushisa ngesikhatsi inciphisa kulahlekelwa lokubangelwa kubilisa. Uma nje kunekushisa lokudluliselwa ku-hydrogen lengemanti, itawuhwamuka futsi ivute. Akusiko loko kuphela, kuhlanganiswa kwemoya-mpilo kwenteka ngesikhatsi sekuphuka kwe-insulation. Uma umoya-mpilo sewuhlangana ne-hydrogen nobe letinye tintfo letivutsako, ingoti yemlilo iyakhula. Ngakoke, ngekucabanga ngengoti yemlilo emavalvu langabhekana nayo, emavalvu kumele aklanyelwe ngetintfo letingaqhumi engcondvweni, kanye netintfo letingavumeli umlilo, tintfo tekusebenta kanye netintsambo, konkhe lokunetitifiketi leticinile kakhulu. Loku kucinisekisa kutsi levalve isebenta kahle uma kwenteka umlilo. Kukhula kwemfutfo nako kuyingoti lengaba khona lengenta emavalvu angasebenti. Uma i-hydrogen lengemanti ivaleleke emgodzini wemtimba wevalve kanye nekudluliswa kwekushisa kanye nekuhhwamuka kwe-hydrogen lengemanti kwenteka ngesikhatsi sinye, kutawubangela kukhula kwemfutfo. Uma kunemehluko lomkhulu wekucindzeteleka, kwenteka i-cavitation (i-cavitation)/umsindvo. Leti tintfo letimangalisako tingaholela ekupheleni kwemphilo yenkonzo yevalve ngaphambi kwesikhatsi, futsi ngisho nekulahlekelwa lokukhulu ngenca yekukhubateka kwenchubo. Kungakhatsaliseki kutsi ngutiphi timo letitsite tekusebenta, uma letintfo letingenhla tingacatshangelwa ngalokuphelele futsi tinyatselo letihambisanako tingatsatfwa enchubeni yekuklama, kungacinisekisa kusebenta lokuphephile nalokwetsembekile kwevalve. Ngetulu kwaloko, kunetinsayeya tekuklama letihlobene netindzaba temvelo, njengekuvuza kwekubaleka. I-hydrogen ihlukile: emamolekhyuli lamancane, ayinambala, ayinaphunga, futsi iyaqhuma. Letimphawu tincuma sidzingo lesiphelele sekuvuza kwe-zero.
Esiteshini sekukhicita i-Hydrogen eNshonalanga yeLugwini lwaseNyakatfo Las Vegas,
Onjiniyela be Wieland Valve baniketa tinsita tebuchwepheshe
Tisombululo temavalvu
Kungakhatsaliseki kutsi umsebenti lotsite kanye neluhlobo, emavalvu ato tonkhe ticelo te hydrogen lesemantini kumele ahlangabetane naletinye tidzingo letivamile. Letidzingo tifaka ekhatsi: tintfo tencenye yesakhiwo kumele ticinisekise kutsi bucotfo besakhiwo bugcinwa emazingeni ekushisa laphansi kakhulu; Tonkhe tintfo kumele tibe netimphawu temvelo tekuphepha emlilweni. Ngesizatfu lesifanako, tintfo tekuvala kanye nekupakisha emavalvu e-hydrogen lesemantini kumele futsi kuhlangabetane netidzingo letisisekelo letishiwo ngenhla. Insimbi lengagucuki ye-Austenitic yintfo lekahle yemavalvu e-hydrogen lesemantini. Inemandla lamahle kakhulu emtselela, kulahleka lokuncane kwekushisa, futsi ingamelana nekushisa lokukhulu. Kukhona letinye tintfo letiphindze tilungele timo te hydrogen lesemantini, kepha tilinganiselwe etimeni letitsite tenchubo. Ngekwengeta ngekukhetsa tintfo, leminye imininingwane yekuklama akukafaneli ingatsatfwa njengalebalulekile, njengekwelula sicu se valve kanye nekusebentisa insika yemoya kuvikela kupakisha kwekuvala kusuka ekushiseni lokuphansi kakhulu. Ngetulu kwaloko, kwandziswa kwesicu sevalve kungafakwa indandatho yekuvikela kugwema kufinyeta. Kuklama emavalvu ngekuya kwetimo letitsite tekusebenta kusita kuniketa tisombululo letinengcondvo kakhulu tetinsayeya letehlukene tebuchwepheshe. Vellan uniketa emavalvu eluvivane ngemiklamo lemibili leyehlukene: emavalvu eluvivane wesihlalo sensimbi lephindvwe kabili eccentric kanye ne-eccentric katsatfu. Bobabili imiklamo inemandla ekugeleza ngetindlela letimbili. Ngekuklama kwakheka kwe-disc kanye nendlela yekujika, kungafinyeleleka kuvala lokucinile. Kute umgodzi emtimbeni wevalve lapho kute khona umkhakha losalele. Endzabeni ye-valve ye-Velan lephindvwe kabili le-eccentric, yamukela umklamo wekujika we-disc eccentric, lehlanganiswe neluhlelo lwekuvala lwe-VELFLEX loluhlukile, kute kuzuzwe kusebenta lokuhle kakhulu kwekuvala kwe-valve. Lomklamo lonelungelo lobunikati ungamelana ngisho nekugucugucuka lokukhulu kwekushisa kulevalve. I-TORQSEAL triple eccentric disc iphindze ibe nendlela yekujika leyakhelwe ngalokukhetsekile lesita kucinisekisa kutsi indzawo yekuvala ye-disc itsintsa kuphela situlo ngesikhatsi sekufinyelela endzaweni yevalve levaliwe futsi ayiklwebheki. Ngako-ke, i-torque yekuvala ye-valve ingashayela le-disc kute ifinyelele kuhlala lokuhambisanako, futsi ikhicite umphumela we-wedge loyenele esimeni se-valve levaliwe, ngesikhatsi yenta le-disc itsintse ngekulingana nayo yonkhe indzawo yekuvala yesihlalo. Kuhambisana kwesihlalo sevalve kuvumela umtimba wevalve kanye ne disc kutsi kube nemsebenti “wekutilungisa”, ngaleyondlela kugwema kuhlaselwa kwe disc ngesikhatsi sekushisa lokugucukako. Le shaft ye valve yensimbi lecinisiwe iyakhona kwenta imijikeleto lesetulu yekusebenta futsi isebenta kahle emazingeni ekushisa laphansi kakhulu. Umklamo we-VELFLEX lophindvwe kabili we-eccentric uvumela kutsi le-valve isetjentiswe ku-inthanethi ngekushesha futsi kalula. Ngenca yetindlu letiseceleni, situlo kanye ne-disc kungahlolwa noma kusetjentiswe ngco, ngaphandle kwesidzingo sekukhipha i-actuator noma emathulusi lakhetsekile.
Tianjin Tanggu Ivalvu Yekuvala Emanti Inkampanibasekela emavalvu lahleti lacinile ebuchwephesheni lobusetulu kakhulu, kufaka ekhatsi emavalvu lahleti lacinile .Ivalvu yeluvivane, Ivalvu yeluvivane, Ivalvu levivane lecondzene ne-flanges lephindvwe kabili, Ivalvu levivane lephindvwe kabili,Y-sisefo, ivalvu yekulinganisa,Ivalve yekuhlola emapuleti lamabili e-Wafer, njll.
Sikhatsi sekuposa: Indlovana-11-2023
