Cov kua hydrogen muaj qee qhov zoo hauv kev khaws cia thiab kev thauj mus los. Piv rau hydrogen, cov kua hydrogen (LH2) muaj qhov ceev dua thiab xav tau qhov siab qis dua rau kev khaws cia. Txawm li cas los xij, hydrogen yuav tsum yog -253 ° C kom ua kua, uas txhais tau tias nws nyuaj heev. Qhov kub qis heev thiab kev pheej hmoo ntawm kev kub hnyiab ua rau cov kua hydrogen ua qhov chaw txaus ntshai. Vim li no, kev ntsuas kev nyab xeeb nruj thiab kev ntseeg siab siab yog qhov yuav tsum tau ua thaum tsim cov li qub rau cov ntawv thov cuam tshuam.
Los ntawm Fadila Khelfaoui, Frédéric Blanquet
Velan valve (Velan)
Cov kev siv cov kua hydrogen (LH2).
Tam sim no, cov kua hydrogen siv thiab sim siv rau ntau lub sijhawm tshwj xeeb. Hauv kev tsav dav hlau, nws tuaj yeem siv ua roj foob pob hluav taws thiab kuj tuaj yeem tsim cov nthwv dej poob siab hauv cov qhov cua transonic. Txhawb nqa los ntawm "kev tshawb fawb loj," cov kua hydrogen tau dhau los ua cov khoom siv tseem ceeb hauv cov kab ke superconducting, cov khoom siv accelerators, thiab cov khoom siv nuclear fusion. Raws li tib neeg lub siab xav rau kev txhim kho kom ruaj khov loj hlob, cov kua hydrogen tau siv los ua roj los ntawm ntau thiab ntau lub tsheb thauj khoom thiab nkoj hauv xyoo tas los no. Hauv cov xwm txheej thov saum toj no, qhov tseem ceeb ntawm cov li qub yog qhov pom tseeb heev. Kev ua haujlwm zoo thiab txhim khu kev qha ntawm cov li qub yog ib feem tseem ceeb ntawm cov kua hydrogen muab khoom siv ecosystem (kev tsim khoom, kev thauj mus los, kev khaws cia thiab kev faib tawm). Kev ua haujlwm ntsig txog cov kua hydrogen yog qhov nyuaj. Nrog ntau tshaj 30 xyoo ntawm kev paub dhau los thiab kev txawj ntse hauv kev ua haujlwm siab ntawm cov li qub qis dua -272 ° C, Velan tau koom nrog ntau yam haujlwm tshiab tau ntev, thiab nws yog qhov tseeb tias nws tau yeej cov teeb meem kev siv tshuab ntawm cov kua hydrogen kev pabcuam nrog nws lub zog.
Cov teeb meem hauv theem tsim qauv
Qhov siab, kub thiab hydrogen concentration yog txhua yam tseem ceeb uas tau tshuaj xyuas hauv kev ntsuam xyuas kev pheej hmoo ntawm kev tsim lub valve. Yuav kom ua tau zoo tshaj plaws rau kev ua haujlwm ntawm lub valve, kev tsim qauv thiab kev xaiv cov khoom siv ua lub luag haujlwm tseem ceeb. Cov valve siv rau hauv cov kua hydrogen ntsib teeb meem ntxiv, suav nrog cov teebmeem tsis zoo ntawm hydrogen rau cov hlau. Thaum qhov kub qis heev, cov khoom siv valve yuav tsum tsis txhob tsuas yog tiv taus kev tawm tsam ntawm cov hydrogen molecules (qee qhov ntawm cov txheej txheem puas tsuaj tseem tab tom sib cav hauv tsev kawm ntawv), tab sis kuj yuav tsum tswj kev ua haujlwm ib txwm rau lub sijhawm ntev thoob plaws lawv lub neej voj voog. Hais txog qib kev txhim kho thev naus laus zis tam sim no, kev lag luam muaj kev paub tsawg txog kev siv cov khoom siv tsis yog hlau hauv kev siv hydrogen. Thaum xaiv cov khoom siv sealing, nws yog qhov tsim nyog los coj qhov no mus rau hauv tus account. Kev sealing zoo kuj yog qhov tseem ceeb ntawm kev ua tau zoo tsim. Muaj qhov sib txawv ntawm qhov kub thiab txias ntawm yuav luag 300 ° C ntawm cov kua hydrogen thiab qhov kub thiab txias (qhov kub thiab txias hauv chav), ua rau muaj qhov sib txawv ntawm qhov kub thiab txias. Txhua qhov ntawm lub valve yuav dhau los ntawm ntau qib sib txawv ntawm kev nthuav dav thermal thiab kev cog lus. Qhov sib txawv no tuaj yeem ua rau muaj kev xau ntawm cov nplaim sealing tseem ceeb. Qhov kev sib khi nruj ntawm lub valve kuj yog qhov tseem ceeb ntawm kev tsim. Kev hloov pauv ntawm txias mus rau kub tsim cov cua sov. Cov qhov kub ntawm thaj chaw lub hau npog yuav khov, uas tuaj yeem cuam tshuam kev ua haujlwm ntawm lub qia thiab cuam tshuam rau kev ua haujlwm ntawm lub valve. Tsis tas li ntawd, qhov kub qis heev ntawm -253 ° C txhais tau tias yuav tsum muaj cov thev naus laus zis rwb thaiv tsev zoo tshaj plaws los xyuas kom meej tias lub valve tuaj yeem tswj cov kua hydrogen ntawm qhov kub no thaum txo qhov kev poob los ntawm kev npau. Tsuav yog muaj cua sov hloov mus rau cov kua hydrogen, nws yuav ua pa thiab xau. Tsis yog li ntawd xwb, cov pa oxygen condensation tshwm sim ntawm qhov tawg ntawm lub rwb thaiv tsev. Thaum cov pa oxygen los kov cov hydrogen lossis lwm yam khoom kub hnyiab, qhov kev pheej hmoo ntawm hluav taws kub nce ntxiv. Yog li ntawd, xav txog qhov kev pheej hmoo hluav taws uas cov valve yuav ntsib, cov valve yuav tsum tau tsim nrog cov khoom siv tiv thaiv kev tawg, nrog rau cov actuators tiv taus hluav taws, cov cuab yeej thiab cov cables, tag nrho nrog cov ntawv pov thawj nruj tshaj plaws. Qhov no ua kom ntseeg tau tias lub valve ua haujlwm zoo thaum muaj hluav taws kub. Kev nce siab kuj yog qhov kev pheej hmoo uas tuaj yeem ua rau cov valve tsis ua haujlwm. Yog tias cov kua hydrogen raug kaw hauv qhov ntawm lub cev valve thiab kev hloov pauv cua sov thiab cov kua hydrogen evaporation tshwm sim tib lub sijhawm, nws yuav ua rau muaj kev nce siab. Yog tias muaj qhov sib txawv ntawm qhov siab loj, cavitation (cavitation) / suab nrov tshwm sim. Cov xwm txheej no tuaj yeem ua rau lub valve tas sij hawm ua ntej lub sijhawm ua haujlwm, thiab txawm tias raug kev poob loj heev vim yog qhov tsis zoo ntawm cov txheej txheem. Txawm hais tias muaj cov xwm txheej ua haujlwm tshwj xeeb li cas los xij, yog tias cov yam ntxwv saum toj no tuaj yeem xav txog tag nrho thiab cov kev tiv thaiv sib xws tuaj yeem ua rau hauv cov txheej txheem tsim, nws tuaj yeem ua kom muaj kev nyab xeeb thiab txhim khu kev qha ntawm lub valve. Tsis tas li ntawd, muaj cov teeb meem tsim qauv cuam tshuam nrog cov teeb meem ib puag ncig, xws li kev xau dej. Hydrogen yog qhov tshwj xeeb: cov molecule me me, tsis muaj xim, tsis muaj ntxhiab, thiab tawg. Cov yam ntxwv no txiav txim siab qhov tsim nyog ntawm xoom xau.
Ntawm North Las Vegas West Coast Hydrogen Liquefaction chaw nres tsheb,
Wieland Valve engineers muab kev pabcuam kev txawj ntse
Cov kev daws teeb meem ntawm lub valve
Txawm hais tias muaj kev ua haujlwm thiab hom tshwj xeeb li cas los xij, cov li qub rau txhua daim ntawv thov hydrogen kua yuav tsum ua tau raws li qee qhov kev cai. Cov kev cai no suav nrog: cov khoom siv ntawm cov qauv yuav tsum ua kom ntseeg tau tias qhov kev ua tiav ntawm cov qauv raug tswj hwm ntawm qhov kub qis heev; Txhua yam khoom siv yuav tsum muaj cov khoom siv hluav taws xob ntuj. Vim li cas tib yam, cov khoom sib khi thiab kev ntim khoom ntawm cov li qub hydrogen kua kuj yuav tsum ua tau raws li cov kev cai yooj yim uas tau hais los saum toj no. Austenitic stainless hlau yog cov khoom siv zoo tagnrho rau cov li qub hydrogen kua. Nws muaj lub zog cuam tshuam zoo heev, qhov poob cua sov tsawg kawg nkaus, thiab tuaj yeem tiv taus qhov kub thiab txias loj. Muaj lwm cov ntaub ntawv uas kuj tsim nyog rau cov xwm txheej hydrogen kua, tab sis tsuas yog txwv rau cov xwm txheej tshwj xeeb. Ntxiv nrog rau kev xaiv cov ntaub ntawv, qee cov ntsiab lus tsim yuav tsum tsis txhob raug saib tsis taus, xws li txuas ntxiv lub qia valve thiab siv cov cua los tiv thaiv cov ntim sealing los ntawm qhov kub qis heev. Tsis tas li ntawd, qhov txuas ntxiv ntawm lub qia valve tuaj yeem nruab nrog lub nplhaib rwb thaiv tsev kom tsis txhob muaj dej noo. Kev tsim cov li qub raws li cov xwm txheej thov tshwj xeeb pab muab cov kev daws teeb meem tsim nyog rau ntau yam kev cov nyom sib txawv. Vellan muaj cov li qub npauj npaim hauv ob qho kev tsim sib txawv: ob chav eccentric thiab peb chav eccentric hlau rooj zaum npauj npaim. Ob qho kev tsim muaj peev xwm ntws bidirectional. Los ntawm kev tsim cov duab ntawm lub disc thiab txoj kev tig, lub foob kaw tuaj yeem ua tiav. Tsis muaj qhov hauv lub cev valve qhov twg tsis muaj cov khoom seem. Hauv qhov xwm txheej ntawm Velan ob chav eccentric npauj npaim valve, nws siv lub disc eccentric rotation tsim, ua ke nrog VELFLEX sealing system tshwj xeeb, kom ua tiav qhov kev ua tau zoo ntawm lub valve sealing. Tus qauv tsim patent no tuaj yeem tiv taus txawm tias qhov kub hloov pauv loj hauv lub valve. Lub TORQSEAL peb chav eccentric disc kuj muaj txoj kev tig tsim tshwj xeeb uas pab ua kom lub disc sealing nto tsuas yog kov lub rooj zaum thaum lub sijhawm mus txog qhov chaw kaw valve thiab tsis khawb. Yog li ntawd, lub zog kaw ntawm lub valve tuaj yeem tsav lub disc kom ua tiav qhov chaw zaum raws li txoj cai, thiab tsim cov nyhuv wedge txaus hauv qhov chaw kaw valve, thaum ua rau lub disc sib npaug zos nrog tag nrho qhov ncig ntawm qhov chaw kaw lub rooj zaum. Kev ua raws li lub rooj zaum valve tso cai rau lub cev valve thiab disc kom muaj "tus kheej kho", yog li zam kev ntes ntawm lub disc thaum muaj kev hloov pauv kub. Lub zog stainless hlau valve ncej muaj peev xwm ua haujlwm siab thiab ua haujlwm du ntawm qhov kub qis heev. Lub VELFLEX ob chav eccentric tsim tso cai rau lub valve kom tau kev pabcuam online sai thiab yooj yim. Ua tsaug rau lub tsev nyob sab, lub rooj zaum thiab lub disc tuaj yeem kuaj xyuas lossis kho ncaj qha, tsis tas yuav tsum rhuav lub actuator lossis cov cuab yeej tshwj xeeb.
Tiv tauj peb - Tianjin Tanggu Water-Seal Valve Co., Ltdtxhawb nqa cov thev naus laus zis siab heev uas muaj peev xwm zaum tau, suav nrog cov khoom zaum tauwafer npauj npaim valve, Lub pob valve npauj npaim, Ob chav flange concentric npauj npaim valve, Ob chav flange eccentric npauj npaim valve,Y-strainer, lub valve sib npaug,Wafer ob lub phaj xyuas valve, thiab lwm yam.
Lub sijhawm tshaj tawm: Lub Yim Hli-11-2023
