Nrog rau kev txhim kho ntawm lub peev xwm nqa tau ntawm cov foob pob hluav taws cryogenic, qhov xav tau ntawm cov dej ntws los ntawm cov roj propellant kuj nce ntxiv. Cov kav dej xa dej cryogenic yog ib qho khoom siv tseem ceeb hauv kev lag luam aerospace, uas yog siv rau hauv cov txheej txheem cryogenic propellant filling system. Hauv cov kav dej xa dej kub qis, lub raj xa dej kub qis, vim nws muaj kev sib khi zoo, tiv taus siab thiab khoov tau zoo, tuaj yeem them rov qab thiab nqus cov kev hloov pauv los ntawm kev nthuav dav thermal lossis kev sib cog lus txias los ntawm kev hloov pauv kub, them rov qab qhov kev teeb tsa ntawm cov kav dej thiab txo qhov kev co thiab suab nrov, thiab dhau los ua ib qho tseem ceeb ntawm cov dej xa dej hauv cov txheej txheem sau dej kub qis. Yuav kom hloov kho rau qhov kev hloov pauv los ntawm kev txav mus los ntawm kev sib txuas thiab kev poob ntawm cov khoom siv propellant filling hauv qhov chaw me me ntawm lub pej thuam tiv thaiv, cov kav dej tsim yuav tsum muaj qee qhov kev hloov pauv tau yooj yim hauv ob qho tib si transverse thiab longitudinal.

Lub raj xa dej cryogenic tshiab ua rau lub cheeb ntawm txoj kev tsim loj dua, txhim kho lub peev xwm hloov pauv kua dej cryogenic, thiab muaj kev hloov pauv tau yooj yim hauv ob qho kev taw qhia sab thiab sab ntev.

Kev tsim qauv dav dav ntawm cov kav dej cryogenic nqus tsev

Raws li qhov yuav tsum tau siv thiab qhov chaw tsuag ntsev, cov khoom siv hlau 06Cr19Ni10 raug xaiv ua cov khoom siv tseem ceeb ntawm cov kav dej. Cov kav dej sib dhos muaj ob txheej ntawm cov kav dej, lub cev sab hauv thiab lub cev sab nraud, txuas nrog los ntawm 90 ° lub luj tshib hauv nruab nrab. Cov ntawv ci txhuas thiab cov ntaub tsis-alkali raug qhwv rau ntawm qhov chaw sab nraud ntawm lub cev sab hauv los tsim cov txheej rwb thaiv tsev. Muaj ntau lub nplhaib txhawb nqa PTFE hose tau teeb tsa sab nraud ntawm cov txheej rwb thaiv tsev kom tiv thaiv kev sib cuag ncaj qha ntawm cov kav dej sab hauv thiab sab nraud thiab txhim kho kev ua haujlwm rwb thaiv tsev. Ob qhov kawg ntawm qhov sib koom ua ke raws li qhov yuav tsum tau txuas, tsim cov qauv sib phim ntawm qhov sib koom ua ke loj adiabatic. Lub thawv adsorption puv nrog 5A molecular sieve tau teeb tsa hauv lub sandwich tsim ntawm ob txheej ntawm cov raj kom ntseeg tau tias cov kav dej muaj qhov nqus tsev zoo thiab lub neej nqus tsev ntawm cryogenic. Lub ntsaws sealing yog siv rau lub sandwich nqus tsev txheej txheem interface.

Cov khoom siv txheej rwb thaiv tsev

Cov txheej rwb thaiv tsev muaj ntau txheej ntawm daim ntaub thaiv kev cuam tshuam thiab txheej spacer sib hloov ua ke rau ntawm phab ntsa adiabatic. Lub luag haujlwm tseem ceeb ntawm daim ntaub thaiv kev cuam tshuam yog cais cov cua sov sab nraud. Lub spacer tuaj yeem tiv thaiv kev sib cuag ncaj qha nrog daim ntaub thaiv kev cuam tshuam thiab ua haujlwm ua cov nplaim taws thiab rwb thaiv tsev kub. Cov ntaub thaiv kev cuam tshuam suav nrog cov ntawv ci txhuas, cov yeeb yaj kiab polyester txhuas, thiab lwm yam, thiab cov ntaub thaiv txheej suav nrog cov ntawv iav tsis-alkali, daim ntaub iav tsis-alkali, ntaub nylon, ntawv adiabatic, thiab lwm yam.

Hauv cov qauv tsim, cov ntawv ci txhuas raug xaiv ua txheej rwb thaiv tsev ua lub vijtsam cuam tshuam, thiab cov ntaub iav fiber tsis-alkali ua txheej spacer.

Lub thawv nqus thiab lub thawv nqus

Adsorbent yog ib yam khoom uas muaj cov qauv microporous, nws qhov chaw adsorption loj heev, los ntawm lub zog molecular kom nyiam cov roj molecules rau ntawm qhov chaw ntawm adsorbent. Lub adsorbent hauv lub sandwich ntawm cov yeeb nkab cryogenic ua lub luag haujlwm tseem ceeb hauv kev tau txais thiab tswj qhov nqus tsev ntawm lub sandwich ntawm cryogenic. Cov adsorbents feem ntau siv yog 5A molecular sieve thiab active carbon. Nyob rau hauv lub tshuab nqus tsev thiab cryogenic tej yam kev mob, 5A molecular sieve thiab active carbon muaj peev xwm adsorption zoo sib xws ntawm N2, O2, Ar2, H2 thiab lwm yam roj. Activated carbon yooj yim rau desorb dej thaum nqus tsev hauv sandwich, tab sis yooj yim rau hlawv hauv O2. Activated carbon tsis raug xaiv ua adsorbent rau cov kua oxygen nruab nrab pipeline.

5A molecular sieve tau raug xaiv los ua sandwich adsorbent hauv txoj kev tsim qauv.