Say likidon hydrogen et walaan na pigaran bentaha ed panagsimpen tan panagbiahe. No ikompara ed hydrogen, say liquid hydrogen (LH2) et mas atagey so densidad to tan mankaukolan na abeban presyon parad pangisimpen. Balet, say hydrogen et kaukolan ya -253°C pian magmaliw ya likido, ya mankabaliksan ya mairap itan. Say alablabas ya abeban temperatura tan peligro na pakapoolan so manggagawa ed liquid hydrogen ya mapeligron medium. Lapud saya, saray istrikton paraan na seguridad tan atagey a panagmatalek so ag-ontutundan kakaukolanen no mandedesinyo na saray balbula parad saray matukoy ya aplikasyon.
Insulat nen Fadila Khelfaoui, Frédéric Blanquet
Velan valve (Velan)
Saray aplikasyon na likidon hidroheno (LH2).
Diad kaplesan, say liquid hydrogen et uusaren tan sasalien ya usaren ed nanduruman espisyal ya okasyon. Diad aerospace, nayarin usaren itan bilang rocket launch fuel tan nayarin mamawala met na shock waves ed transonic wind tunnels. Lapud susuportaan na “baleg a siensia,” say likidon hidroheno so nagmaliw a manunan materyales ed saray superconducting system, particle accelerator, tan nuclear fusion devices. Legan ya ondarakel so pilalek na totoo parad sustinable ya iyaaligwas, say liquid hydrogen et inusar na mas dakel a trak tan barko bilang gasolina ed apalabas iran taon. Diad saray senaryo na aplikasyon ed tagey, say kaimportantian na saray balbula et mapatnag a tuloy. Say maligen tan napanmatalkan ya operasyon na saray balbula et manunan kabiangan na liquid hydrogen supply chain ecosystem (panaggawa, panagbiahe, panagsimpen tan panagbunog). Saray operasyon ya misiglaotan ed likidon hydrogen et mairap. Diad masulok ya 30 taon ya praktikal ya eksperiensya tan kakabatan ed lawak na high-performance valves ya anggad -272°C, say Velan et abayag lan akibiang ed nanduruman makabayon proyekto, tan malinew ya analo to ray teknikal ya angat na liquid hydrogen service lapud biskeg to.
Saray angat ed yugtan na panagdesinyo
Say presyon, temperatura tan konsentrasyon na hydrogen so amin ya manunan sengegan ya uusisaen ed sakey a valve design risk assessment. Pian napaaligwas so performance na balbula, say desinyo tan say pampili na materyales so walaan na importantin betang. Saray balbula ya uusaren ed saray aplikasyon na likidon hidroheno et walaan na kaaruman iran angat, kaiba lay makapuy ya epekto na hidroheno ed saray metal. Diad abeban temperatura, saray materyales na balbula et nepeg ya aglabat makasungdo ed panangataki na saray molekula na hydrogen (arum ed saray mekanismo na inkaderal na satan et pandedebatian ni ed akademya), noagta nepeg met ya mansiansian normal so operasyon da ed andukey a panaon legan na bilay da. No nipaakar ed kaplesan ya iyaaligwas na teknolohiya, limitado so pikakabat na industriya ed no panon ya usaren iray aliwan metal ya materyales ed saray aplikasyon na hydrogen. No manpipili na materyales ya pang-seal, kaukolan ya ikonsidera iyan bengatla. Say epektibon panag-seal et sakey met ya manunan kriterya na performance na desinyo. Walay pandumaan na temperatura ya ngalngalin 300°C ed baetan na likidon hidroheno tan say temperatura na kaliberliber (temperatura na kuarto), kanian walay gradient na temperatura. Kada kabiangan na balbula et ondalan ed nanduruman grado na thermal expansion tan contraction. Sayan agpantatalosan et nayarin manresulta ed mapeligron itatagey na saray kritikal a tapew na sealing. Say inka-seal na valve stem so manunan imano met na desinyo. Say pangiyalis manlapud ambetel ya anggad ambetel et mamawala na iyaagus na petang. Saray ambetel a parte na bonnet cavity area et nayarin manyelo, ya nayarin mangamper ed stem sealing performance tan mangapekta ed valve operability. Niarum ni, say abeban tuloy ya temperatura ya -253°C et mankabaliksan ya nakaukolan so sankaabigan ya teknolohiya na insulasyon pian naseguro ya say balbula et makapansiansia na likidon hidroheno ed sayan temperatura legan ya nabawasan so pakaandi lapud panagbukal. Basta walay petang ya iyalis ed likidon hydrogen, onsingaw itan tan onlelereg. Aliwan satan labat, say oxygen condensation et nagagawa ed breaking point na insulation. No say oxygen et makapitongtong ed hydrogen odino arum nin napoolan, ondarakel so peligro na pool. Kanian, no ikonsidera so peligro na pool ya nayarin arapen na saray balbula, saray balbula et nepeg ya adesinyo ya sankanonot iray materyales ya ag-onsabog, ontan met ed saray actuator, instrumento tan kable ya ag-onsabog, ya amin da et walaan na sankaestriktoan iran sertipikasyon. Saya so mamaseguro ya say balbula et mankimey a maong no bilang ta walay pool. Say ondarakel a presyon et sakey met a posiblin peligro ya nayarin mamaandi ed saray balbula. No say likidon hydrogen et akakulong ed abot na laman na balbula tan say pangiyalis na petang tan say likidon hydrogen et nagawa ed parehon panaon, saya so pansengegan na idakel na presyon. No baleg so pandumaan na presyon, nagawa so cavitation (cavitation)/noise. Sarayan nagagawa et nayarin manresulta ed masakbay ya pangangga na serbisyo na balbula, tan nayarin mansasakit ni ingen na baleg iran lugi lapud depekto ed proseso. Antokaman so espisipikon kondisyon na operasyon, no saray asalambit a bengatla et sigpot ya ikonsidera tan saray mipetekan a countermeasures et nayarin gawaen ed proseso na panagdesinyo, naseguro so ligtas tan napanmatalkan ya operasyon na balbula. Niarum ni, wala ray angat ed desinyo ya misiglaotan ed saray isyu ed kaliberliber, a singa say panag-awas na saray takas. Say hydrogen et nikadkaduma: melag iran molekula, anggapoy kolor, anggapoy angob, tan makapasabog. Sarayan katangian so mandetermina ed talagan pankaukolan na zero leakage.
Diad North Las Vegas West Coast Hydrogen Liquefaction station,
Saray inhinyero na Wieland Valve et mangiiter na teknikal iran serbisyo
Saray solusyon ed balbula
Antokaman so espisipikon gagala tan klase, saray balbula parad amin ya aplikasyon na likidon hidroheno et nepeg ya makasumpal ed pigaran kaslakan a kakaukolanen. Kaiba ed sarayan kakaukolanen: say materyales na parte na istruktura et nepeg ya seguroen ya say integridad na istruktura et napansiansia ed abeban tuloy iran temperatura; Amin ya materyales et nepeg ya walaan na natural ya ligtas ed pool. Lapud parehon rason, saray sealing elements tan say packing na liquid hydrogen valves et nepeg met ya makasumpal ed saray manunan kakaukolanen ya abitla ed tagey. Say austenitic stainless steel et sakey a sankaabigan a materyales parad liquid hydrogen valves. Saya so walaan na ekselentin biskeg na epekto, daiset so pakaandi na petang, tan sarag ton sungdoan so angkakabaleg iran temperatura. Wala ni ray arum a materyales ya matukoy met ed kondisyon na likidon hydrogen, balet ta limitado ed espisipikon kondisyon na proseso. Nilikud ed pampili na materyales, wala ray detalye na desinyo ya ag nepeg ya lingwanan, singa say pamalaknab ed valve stem tan pangusar na air column pian naprotektaan so sealing packing manlapud alablabas ya temperatura. Niarum ni, say extension na valve stem et nayarin nawalaan na insulation ring pian napaliisan so condensation. Say pangidesinyo na saray balbula unong ed espisipikon kondisyon na aplikasyon et ontulong pian nawalaan na mas makatunongan iran solusyon ed nanduruman teknikal iran angat. Say Vellan et mangiyoopresi na butterfly valves ed duaran nanduruman desinyo: double eccentric tan triple eccentric metal seat butterfly valves. Parehon walaan na duaran direksion so iyaagus na duaran desinyo. Diad pangidesinyo na kurti na disc tan say dalan na panag-ikot, nagawaan so malet ya seal. Anggapoy abot ed laman na balbula ya anggapoy nakekeraan ya medium. Diad kaso na Velan double eccentric butterfly valve, inadapta to so disc eccentric rotation design, ya inlaok ed nikadkaduman VELFLEX sealing system, pian nadampot so ekselentin valve sealing performance. Sayan patented ya desinyo et makasungdo ed anggan baleg ya pananguman na temperatura ed balbula. Say TORQSEAL triple eccentric disc et walaan met na espisyal ya adesinyo ya rotation trajectory ya ontulong pian naseguro ya say disc sealing surface et onsabi labat ed yurongan no onsabi ed closed valve position tan ag-onkagat. Kanian, say pansara na torque na balbula so makapangiter na disc pian naabot so dugan yurongan, tan makapawala na magenap ya wedge effect ed akasara ya posisyon na balbula, legan ya gagawaen ya parepareho so disc ed interon kaliberliber na tapew na yurongan. Say panumbok na yurongan na balbula et mamaabuloy ed laman na balbula tan say disc ya nawalaan na “self-adjusting” ya function, kanian napaliisan so paka-seizure na disc legan ya manguuman so temperatura. Say pinabiskeg ya stainless steel valve shaft et sarag toy manggawa na atagey iran operating cycle tan maong so operasyon to ed abeban temperatura. Say VELFLEX double eccentric design et mamaabuloy ya maples tan mainomay ya na-service so balbula online. Lapud say side housing, say yurongan tan disc et nayarin direktan inspeksionen odino naserbisyoan, ya agla kaukolan ya ekalen so actuator odino espisyal iran kagawaan.
Tianjin Tanggu Water-Seal Valve Co.,ltdsusuportaan da so atagey ya teknolohiya na resilient seated valves, kaiba lay resilient seatedwafer butterfly valve, Lug butterfly valve, Doble flange concentric butterfly valve, Doble flange eccentric butterfly valve,Y-strainer, balancing valve,Wafer dual plate check valve, tan arum ni.
Oras na pangi-post: Aug-11-2023
