I-hydrogen engamanzi ineengenelo ezithile zokugcina nokuthutha. Xa kuthelekiswa ne-hydrogen, i-hydrogen engamanzi (LH2) inoxinaniso oluphezulu kwaye ifuna uxinzelelo olusezantsi lokugcina. Nangona kunjalo, i-hydrogen kufuneka ibe ngu -253°C ukuze ibe lulwelo, nto leyo ethetha ukuba kunzima kakhulu. Amaqondo obushushu aphantsi kakhulu kunye nemingcipheko yokutsha yenza i-hydrogen engamanzi ibe yindawo eyingozi. Ngenxa yesi sizathu, amanyathelo okhuseleko olungqongqo kunye nokuthembeka okuphezulu kwiimfuno ezingahambelaniyo xa kuyilwa iivalve kwizicelo ezifanelekileyo.
NguFadila Khelfaoui, uFrédéric Blanquet
Ivalve yeVelan (iVelan)
Ukusetyenziswa kwe-hydrogen engamanzi (LH2).
Okwangoku, kusetyenziswa i-hydrogen engamanzi kwaye izanywa ukusetyenziswa kwizihlandlo ezahlukahlukeneyo ezikhethekileyo. Kwi-aerospace, inokusetyenziswa njengesibaso sokuphehlelelwa kwerokethi kwaye inokuvelisa amaza othusayo kwiitonela zomoya ezidlulayo. Ixhaswa "yinzululwazi enkulu," i-hydrogen engamanzi iye yaba yinto ephambili kwiinkqubo ze-superconducting, ii-accelerators zamasuntswana, kunye nezixhobo ze-fusion yenyukliya. Njengoko umnqweno wabantu wophuhliso oluzinzileyo ukhula, i-hydrogen engamanzi isetyenziswe njengamafutha ziilori ezininzi kunye neenqanawa kwiminyaka yakutshanje. Kwiimeko zesicelo esingentla, ukubaluleka kweevalvu kubonakala kakhulu. Ukusebenza okukhuselekileyo nokuthembekileyo kweevalvu yinxalenye ebalulekileyo yolwelo lwe-hydrogen supply chain ecosystem (ukuveliswa, ukuthutha, ukugcinwa kunye nokusabalalisa). Imisebenzi enxulumene ne-hydrogen engamanzi icela umngeni. Ngaphezulu kweminyaka engama-30 yamava asebenzayo kunye nobuchule kwintsimi yeevalvu ezisebenza kakhulu ukuya kuthi ga kwi-272 ° C, uVelan uye wabandakanyeka kwiiprojekthi ezininzi ezintsha ixesha elide, kwaye kucacile ukuba iphumelele imingeni yobugcisa. inkonzo ye-hydrogen engamanzi ngamandla ayo.
Imingeni kwisigaba soyilo
Uxinzelelo, ubushushu kunye noxinzelelo lwe-hydrogen zizo zonke izinto eziphambili ezihlolwe kuvavanyo lomngcipheko woyilo lwevalvu. Ukuze kuphuculwe ukusebenza kwevalve, uyilo kunye nokukhethwa kwezinto kudlala indima eqinisekileyo. Iivalvu ezisetyenziswa kwi-liquid hydrogen applications zijongana nemingeni eyongezelelweyo, kubandakanya neziphumo ezibi zehydrogen kwiintsimbi. Kumaqondo obushushu aphantsi kakhulu, imathiriyeli yevalvu akufuneki imelane nohlaselo lweemolekyuli zehydrogen kuphela (ezinye zeendlela zokuwohloka ezinxulumene noko kusaxoxwa ngazo kwizifundiswa), kodwa kufuneka zigcine ukusebenza okuqhelekileyo ixesha elide kumjikelo wobomi bazo. Ngokubhekiselele kwinqanaba langoku lophuhliso lwezobuchwepheshe, ishishini linolwazi olulinganiselweyo malunga nokusebenza kwezinto ezingezona zetsimbi kwizicelo ze-hydrogen. Xa ukhetha into yokutywina, kuyimfuneko ukuthatha le nto. Ukutywinwa okusebenzayo kukwayindlela ephambili yoyilo loyilo. Kukho umahluko weqondo lobushushu eliphantse libe yi-300°C phakathi kwe-hydrogen engamanzi kunye neqondo lobushushu le-ambient (iqondo lobushushu begumbi), nto leyo ekhokelela kwiqondo lobushushu. Icandelo ngalinye le-valve liya kungena kwiidigri ezahlukeneyo zokwandiswa kwe-thermal kunye nokunciphisa. Oku kungangqinelani kunokukhokelela ekuvuzeni okuyingozi kwemiphezulu yokutywina. Ukuqina kokutywina kwesiqu sevalve kukwayingqwalasela yoyilo. Ukutshintsha ukusuka kwingqele ukuya kushushu kudala ukuhamba kobushushu. Iindawo ezishushu zomngxunya webhonethi zinokukhenkceka, ezinokuphazamisa ukusebenza kokutywinwa kwesikhondo kwaye kuchaphazele ukusebenza kwevalvu. Ukongeza, amaqondo obushushu aphantsi kakhulu angama-253°C athetha ukuba obona buchwepheshe bufunekayo bokugquma bufuneka ukuqinisekisa ukuba ivalve inako ukugcina i-hydrogen engamanzi kobu bushushu ngelixa inciphisa ilahleko ebangelwa kukubilisa. Logama nje kukho ubushushu obukhutshelwe kwi-hydrogen engamanzi, iya kuba ngumphunga kwaye ivuze. Akunjalo kuphela, i-oxygen condensation iyenzeka kwindawo yokuphuka kwe-insulation. Nje ukuba ioksijini idibane nehydrogen okanye ezinye izinto ezinokutsha, ingozi yomlilo iyanda. Ngoko ke, kuqwalaselwe ingozi yomlilo ezinokuthi iivalvu zijamelane nazo, iivalvu kufuneka ziyilwe kucingwa ngezixhobo ezingagqabhukiyo, kwakunye nezixhobo ezikwaziyo ukumelana nomlilo, izixhobo neentambo zombane, zonke zineziqinisekiso ezingqongqo. Oku kuqinisekisa ukuba ivalve isebenza kakuhle xa kutsha. Uxinzelelo olongezelelweyo lukwangumngcipheko onokuthi wenze iivalvu zingasebenzi. Ukuba i-hydrogen yolwelo ibanjelwe kumngxuma womzimba wevalvu kwaye ukuhanjiswa kobushushu kunye nokuphuma kwe-hydrogen engamanzi kwenzeka ngaxeshanye, kuya kubangela ukwanda koxinzelelo. Ukuba kukho umehluko omkhulu woxinzelelo, i-cavitation (cavitation) / ingxolo iyenzeka. Ezi ziganeko zinokukhokelela ekupheleni kwangaphambi kwexesha lobomi benkonzo yevalve, kwaye zide zibe nelahleko enkulu ngenxa yeziphene zenkqubo. Kungakhathaliseki ukuba iimeko ezithile zokusebenza, ukuba ezi zinto zingentla zingaqwalaselwa ngokupheleleyo kwaye imilinganiselo ehambelanayo ingathathwa kwinkqubo yoyilo, inokuqinisekisa ukusebenza okukhuselekileyo nokuthembekileyo kwe-valve. Ukongeza, kukho imingeni yoyilo enxulumene nemiba yendalo esingqongileyo, njengokuvuza kokubaleka. IHydrogen yodwa: iimolekyuli ezincinci, azinambala, azinavumba, kwaye ziyaqhushumba. Ezi mpawu zimisela imfuneko epheleleyo yokuvuza kweqanda.
Kwisikhululo saseMntla eLas Vegas kuNxweme oluseNtshona lweHydrogen Liquefaction station,
Iinjineli zeValve yaseWieland zibonelela ngeenkonzo zobugcisa
Izisombululo zevalvu
Nokuba nguwuphi na umsebenzi kunye nohlobo oluthile, iivalvu zazo zonke ulwelo lwe-hydrogen izicelo kufuneka zihlangabezane neemfuno eziqhelekileyo. Ezi mfuno zibandakanya: izinto zecandelo lolwakhiwo kufuneka ziqinisekise ukuba isidima sesakhiwo sigcinwa kumaqondo obushushu aphantsi kakhulu; Zonke izixhobo kufuneka zibe neempawu zendalo zokhuseleko lomlilo. Ngesizathu esifanayo, izinto zokutywina kunye nokupakishwa kweevalvu ze-hydrogen ezingamanzi kufuneka zihlangabezane neemfuno ezisisiseko ezikhankanywe ngasentla. I-Austenitic stainless steel yinto efanelekileyo kwi-valve ye-hydrogen engamanzi. Inamandla amakhulu empembelelo, ilahleko encinci yobushushu, kwaye inokumelana nemitha yobushushu enkulu. Kukho ezinye izinto ezilungele iimeko ze-hydrogen zolwelo, kodwa zilinganiselwe kwiimeko ezithile zenkqubo. Ukongeza ekukhethweni kwezinto eziphathekayo, ezinye iinkcukacha zoyilo akufanele zihoywe, njengokwandisa i-valve stem kunye nokusebenzisa ikholomu yomoya ukukhusela ukupakishwa kokutywinwa kwiqondo lokushisa eliphantsi kakhulu. Ukongeza, ukwandiswa kwesiqu se-valve kunokuxhotyiswa ngendandatho yokugquma ukuphepha ukuxinana. Ukuyila iivalve ngokweemeko ezithile zesicelo kunceda ukunika izisombululo ezinengqiqo kwimingeni eyahlukeneyo yobugcisa. I-Vellan ibonelela ngeevalvu zebhabhathane ngeendlela ezimbini ezahlukeneyo: i-eccentric ephindwe kabini kunye ne-triple eccentric metal seat butterfly valves. Zombini ziyilo zinamandla okuqukuqela okuphindwe kabini. Ngokuyila i-disc shape kunye ne-rotation trajectory, i-tight seal inokufezekiswa. Akukho mngxuma kumzimba wevalvu apho kungekho ndlela iseleyo. Kwimeko yeVelan kabini eccentric butterfly valve, ithatha uyilo lokujikeleza kwedisc eccentric, idityaniswe nenkqubo yokutywina ye-VELFLEX eyahlukileyo, ukufezekisa ukusebenza kakuhle kokutywinwa kwevalve. Olu yilo lunelungelo elilodwa lomenzi wechiza lunokumelana nokuguquguquka okukhulu kobushushu kwivalve. I-TORQSEAL i-disc eccentric ye-triple eccentric ine-trajectory eyilwe ngokukodwa ejikelezayo enceda ukuqinisekisa ukuba i-disc yokutywinwa kwendawo ichukumisa kuphela isihlalo ngexesha lokufikelela kwindawo yevalve evaliweyo kwaye ayikrweli. Ngoko ke, i-torque yokuvala i-valve inokuqhuba i-disc ukuphumeza izihlalo ezithobelayo, kwaye ivelise umphumo owaneleyo we-wedge kwindawo yevalve evaliweyo, ngelixa idibanisa i-disc ngokulinganayo kunye nomjikelezo wonke wendawo yokutywinwa kwesihlalo. Ukuthotyelwa kwesihlalo se-valve kuvumela umzimba we-valve kunye ne-disc ukuba ube nomsebenzi "wokuzilungisa", ngaloo ndlela ugweme ukubanjwa kwediski ngexesha lokutshintsha kweqondo lokushisa. I-shaft yevalve yentsimbi eqinisiweyo iyakwazi ukwenza imijikelezo ephezulu yokusebenza kwaye isebenza kakuhle kumaqondo aphantsi kakhulu. Uyilo lwe-VELFLEX oluphindwe kabini lwe-eccentric luvumela i-valve ukuba isetyenziswe kwi-intanethi ngokukhawuleza kwaye kulula. Ndiyabulela kwizindlu ezisecaleni, isihlalo kunye nediski sinokuhlolwa okanye sisebenze ngokuthe ngqo, ngaphandle kwesidingo sokuqhaqha i-actuator okanye izixhobo ezikhethekileyo.
Tianjin Tanggu Water-Seal Valve Co.,ltdzixhasa itekhnoloji ephezulu eyomelela iivalvu ezihleliyo, kubandakanywa ezihleliyo ezomelelayoivelufa yebhabhathane, Lug butterfly valve, Ivalve yebhabhathane eneflange ephindwe kabini, Ivalve yebhabhathane eneflange ephindwe kabini,Y-isihluzi, ivalve yokulinganisa,Ivalve yokujonga iipleyiti ezimbini, njl.
Ixesha lokuposa: Aug-11-2023
