Munthu akafunsa wopanga gasket wabwino kwambiri pazaukadaulo wobiriwira - kaya ndi makina a hydrogen, ma electrolyzer, ma cell amafuta, kapena zotenthetsera zotentha kwambiri - chibadwa changa choyamba ndikukankhira mmbuyo. Palibe zabwino koposa zonse. Ndi msampha, ngati kufunsa chida chabwino kwambiri osatchulapo ngati mukudula nkhuni kapena kupanga chitsulo. Funso lenileni ndilakuti: ndi sealant iti yomwe imagwira ntchito modalirika pansi pazikhalidwe zinazake, nthawi zambiri zolanga, pomwe ikugwirizana ndi chilengedwe komanso kulimba kwaukadaulo wobiriwira? Ndipamene zokambiranazo zimasokonekera, ndipo pomwe mayankho a sitolo yamagetsi amalephera mowopsa.

Chovuta Chachikulu: Sikungokhudza Kusindikiza

Mapulogalamu aukadaulo obiriwira amafotokozeranso kulephera. Mu injini yamagalimoto achikhalidwe, gasket yolira imatha kutanthauza kutsika kwapang'onopang'ono kwamafuta. Mu ma cell amafuta a hydrogen, kulephera pang'ono kwa chisindikizo kungayambitse kuphatikizika kwa gasi, kupha poizoni, kapena chochitika chofunikira kwambiri chachitetezo. Ma TV ndi ankhanza: madzi opangidwa ndi deionized, haidrojeni (onse a gaseous ndi proton form), matenthedwe ozungulira kuchokera ku cryogenic mpaka 90 ° C +, ndipo nthawi zina ma acid ofatsa kapena maziko. Chosindikizira chanu chiyenera kukhala chosakanikirana ndi mankhwala, chokhala ndi zomatira kwa nthawi yaitali, ndikukhalabe ndi mphamvu pansi pa kuponderezedwa. Ndawonapo magulu osasinthika ku silicone ya RTV yotentha kwambiri, koma amangoipeza imawola pambuyo pa maola 500 m'malo oyeserera amafuta a PEM, ndikulowetsa silicone mu nembanemba. Ndiwo ndalama za $ 50k zomwe zawonongeka ndi chubu cha $ 10.

Kugwirizana kwazinthu ndi chipata choyamba. Pautumiki wa haidrojeni, makamaka ndi zigawo zazitsulo, muyenera kupewa zosindikizira zomwe zingayambitse hydrogen embrittlement kapena kukhala ndi chlorides, sulfides. Zosindikizira zambiri za flange zochokera kudziko lamafuta ndi gasi zatuluka. Kwa ma electrolyzer omwe akugwira KOH kapena madzi a deionized, muyenera kukana saponification ndi hydrolysis. Ma epoxy-based form-in-place gaskets (FIPGs) amatha kukhala abwino kwambiri pama flanges olimba, achitsulo mpaka zitsulo m'malo osinthira kutentha, koma ndi olimba. Ngati pali kusinthasintha kulikonse kapena kukulitsa kutentha kosagwirizana, zimasweka. Ndi kusinthanitsa.

Ndiye pali mbiri yochiritsira. Popanga, simungakwanitse kuchiritsa kwa maola 24 nthawi zonse kutentha. Zida zina zimagwiritsa ntchito machiritso ofulumizitsa kutentha. Koma muyenera kuwonetsetsa kuti kutentha kokwezeka sikuyambitsa kutulutsa mpweya komwe kumawononga malo ochitira msonkhano. Ndimakumbukira mzere wosonkhanitsa matenthedwe a solar pomwe chosindikizira chosankhidwa cha anaerobic chinachiritsa mwachangu pamapaipi amkuwa ofunda pamisonkhano yachilimwe, zomwe zimatsogolera kudzaza kosakwanira komanso kutayikira komwe kumangowonekera pambuyo pakukwera njinga m'munda. Zowopsa pamtengo wawaranti.

Mawonekedwe Azinthu: Kupitilira pa Deta

Mudzawona mayina akulu ngati Henkel (Loctite), ThreeBond, Permatex. Zolemba zawo zamakono ndizoyambira, koma ndi zolemba zamalonda. Chofunikira ndikulankhula ndi mainjiniya awo ogwiritsira ntchito ndikupeza zitsanzo zoyesera kuti mutsimikizire kuti mwatsimikiza. Pazisindikizo zosasunthika m'mbale zoziziritsira batire, ndakhala ndi zotsatira zabwino ndi silicone ya Loctite, mndandanda wa 5900, wopangidwira zosinthira kutentha. Imamatira bwino ku aluminiyumu komanso kutulutsidwa kwa asidi pang'ono panthawi yakuchiritsa (kotero kuti chiwopsezo chochepa cha dzimbiri pamalo ovuta).

Pazinthu zokhudzana ndi haidrojeni, pali niche yomwe ikukula ya fluorosilicones ndi ma elastomer opangidwa ndi perfluorinated. Iwo ndi okwera mtengo, koma kukana kwawo kwa mankhwala sikungafanane. Kampani ngati Malingaliro a kampani Handan Zitai Fastener Manufacturing Co., Ltd.-omwe ali wopanga mwachangu kwambiri ku China - amamvetsetsa kuyandikira uku. Amawona kufunikira kwa njira zomangira zapadera m'magulu obiriwira aukadaulo komanso kufunikira kwa njira zosindikizira zogwirizana. Kuyendera tsamba ngati zitaifsteners.com, mumamvetsetsa bwino za chilengedwe cha mafakitale; sizongokhudza bawuti, ndi za kukhulupirika kwa mgwirizano wonse, zomwe mosakayikira zimaphatikizapo gasket kapena chosindikizira. Ubwino wa malo awo pafupi ndi njira zazikulu zoyendera zikuwonetsa kuchuluka kwazinthu zofunikira pama projekiti akuluakulu obiriwira.

Musanyalanyaze ma gaskets opangidwa kale. Nthawi zina madzi ndi yankho lolakwika. Kwa ma flange akuluakulu, ophwanyika m'mafelemu a electrolyzer, pepala lodulidwa la PTFE (ePTFE) yowonjezereka ngati Gore kapena pepala la graphite laminated limatha kupitirira chosindikizira chilichonse chogwiritsidwa ntchito, makamaka pokonza ndi kusokoneza. Koma inu kulipira izo.

The Validation Quagmire

Apa ndi pamene chiphunzitso chimakumana ndi chopukusira. Mufunika protocol yoyeserera yomwe imatsanzira moyo weniweni wautumiki, wofulumizitsa koma osati wosatheka. Kulakwitsa kofala ndikuyesa kuyesa kwa static pressure hold pa kutentha kwachipinda. Izo zimakuuzani inu pafupifupi kanthu. Mufunika kupalasa njinga zotentha, kuwonekera pawailesi yakanema, ndi kugwedezeka ngati kuli kotheka. Tidapanga choyesera chosavuta chomwe chimakhala ndi makuponi omata mubafa lamadzi ozungulira opangidwa ndi 80 ° C, ndi kutentha kwa sabata mpaka 5 ° C. Tinkayenda panjinga tsiku lililonse. Chosindikizira chomwe chimawoneka bwino pakatha mwezi nthawi zina chikhoza kutsika ndikutuluka mwezi wachitatu. Ndilo ndondomeko yanthawi yomwe mukugwira nayo ntchito.

Chinthu chinanso chovuta, chomwe chimayiwalika nthawi zambiri, ndicho kukonzekera pamwamba. Chosindikizira chabwino kwambiri chidzalephera pamalo oipitsidwa kapena opangidwa molakwika. Kwa zitsulo, kuphulika kopepuka kotsatiridwa ndi zosungunulira zosungunulira (monga isopropyl alcohol) ndizokhazikika. Koma kwa zinthu zina zomwe zimagwiritsidwa ntchito m'matangi opepuka a haidrojeni, zosungunulira zimatha kuwononga utomoni. Mungafunike chithandizo cha plasma. Ndinaphunzira izi movutikira kwambiri pa projekiti ya carbon fiber composite pressure chotengera. Mkanda wosindikizirawo unangovunda pambuyo pochiritsidwa. Vuto silinali mankhwala; chinali chonyezimira, chotsalira chotulutsa nkhungu chomwe sitinachichotse.

Mtengo motsutsana ndi Kudalirika: Kuwerengera Kobiriwira Kweniyeni

Muukadaulo wobiriwira, zobiriwira zimatanthawuzanso moyo wautali komanso zinyalala zochepa kuchokera ku zolephera. Wopanga gasket wotchipa atha kupulumutsa $50 pagawo lililonse koma angayambitse kulephera kwa 5%. Mtengo wokonzanso, kuwonongeka kwa mtundu, ndi kuwonongeka kwa zinthu (kuchotsa gawo lonse) zimachepera kupulumutsa koyamba. Mtengo wanu wonse wa umwini wanu uyenera kuphatikizapo izi. Nthawi zina, kutchula mtengo wapamwamba, chinthu chotsimikiziridwa ngati ThreeBond 1215 (chama cell amafuta) kapena epoxy yapadera ndiye kusuntha kokhako kwachuma.

Kupirira kwa supply chain kulinso kofunikira. Pakuchepa kwaposachedwa kwa chip, tidawonanso kusokoneza kwa zida zapadera zamankhwala. Ngati mupanga chinthu chodalira gwero limodzi, chosindikizira chachilendo, mumayika pachiwopsezo cha mzere wanu wopanga. Kukhala ndi gwero lachiwiri loyenerera, ngakhale kutakhala kocheperako pang'ono, ndikwanzeru. Apa ndipamene kuchita ndi opanga omwe ali ndi mwayi wofikira padziko lonse lapansi ndi zomera zingapo, kapena ogulitsa mafakitale akuluakulu omwe ali m'mabwalo ngati Chigawo cha Yongnian, angapereke bata.

Ndiye, Yankho Ndi Chiyani?

Ndizokhumudwitsa osati zenizeni, koma zowona: wopanga gasket wabwino kwambiri ndi amene amadutsa mayeso anu otsimikizika, okhudzana ndi kugwiritsa ntchito. Yambani ndi kufotokoza zenizeni zenizeni, kuchuluka kwa kutentha (min, max, ndi mbiri yapanjinga), kuthamanga (static ndi dynamic), zida zam'munsi, moyo wautumiki wofunikira, ndi zovuta zapagulu. Kenako, yesani awiri kapena atatu omwe akupikisana nawo kuchokera kwa opanga odziwika bwino pamalo omwewo.

Kwa chiwongolero chovuta: pamakina otsika kwambiri, okhazikika m'madzi munyengo yofatsa, silikoni yapamwamba kwambiri, yosalowerera ndale ikhoza kukhala yokwanira. Kwa hydrogen ndi chemistry yaukali, yang'anani ku fluorosilicones kapena fluoropolymers. Pazitsulo zolimba, zothamanga kwambiri, ganizirani za anaerobic kapena epoxy FIPGs. Ndipo musadzalumphe konse ndondomeko yokonzekera pamwamba.

Si yankho lachigololo. Sichikukwanira pamutu. Koma mu ngalande za green tech kupanga, kumene kudalirika ndi chinthu chokha chomwe chimapangitsa teknoloji kukhala yotheka, iyi ndiyo yankho lokha lomwe limagwira madzi-kapena hydrogen, pa nkhaniyi. Cholinga sikupeza mankhwala amatsenga, koma kupanga makina osindikizira omwe amatha, akugwira ntchito bwino komanso osadziwika pa moyo wa chinthucho. Ndizo zabwino kwenikweni.