Ukulinganisa ingcindezi eqondile kubalulekile ekusetshenzisweni kwerabha ye-ethylene-propylene okubandakanya uketshezi lwe-ethylene olunomfutho ophezulu kanyei-propylene. Ukwanda kwengcindezi okungazelelwe okuvela ekushiseni kwe-cryogenic ethangini lokugcina uketshezi lwe-ethylene kungandisa ukuqhuma kanye nezingozi zokuvuza. Idatha ye-NIST ikhombisa ukuthi ukwanda kwebha eli-1 ngaphezu komkhawulo ethangini lokugcina i-ethylene elingama-50 m³ kungakhipha umusi ongaphezu kwama-20 kg ngemizuzwana, okwenza impendulo yesikhathi sangempela ibe yinto ebalulekile.
Ukuthembeka kwenqubo ezimbonini zerabha ze-ethylene-propylene kudinga ama-transmitter okucindezela koketshezi aku-inthanethi amelana nokukhuphuka kwegesi encibilikisiwe kanye nokushintshashintsha okusheshayo okuvamile ezigabeni ze-reactor kanye nephayiphi. Ukuphambuka okungaqaphelwanga ekucindezelweni kungaholela emkhiqizweni ongekho ku-spec noma ekuvaleni okungahleliwe, kunciphisa umkhiqizo ngaphezu kuka-5% ngonyaka kwezinye izitshalo. Ukufakwa kahle kwe-transmitter yokucindezela kuqinisekisai-ethyleneukuphepha kwethangi lokugcina ngokunikeza idatha esheshayo ukuze kuhlanganiswe izinhlelo zokuphepha.
Ithangi Lokugcina I-Ethylene Eliwuketshezi
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Ama-transmitter okucindezela kwezimboni afana namamodeli e-Lonnmeter anikeza ukunemba okungu-±0.1% FS kulo lonke ububanzi bokusebenza obuyi-100–500 bar obuvamile kulezi zinhlelo. Ukuqapha ingcindezi ngesikhathi sokuthuthwa koketshezi lwe-ethylene kuvikela ekuvuza nasekucindezelweni ngokweqile—izimbangela eziphambili zezehlakalo eziyingozi kulo mkhakha. Ukulinganisa okuqinile okuqondile kusekela ukusebenza okuphephile nokuqhubekayo futhi kukhulisa isivuno ezindaweni eziguquguqukayo.
Isingeniso
Ukulinganiswa kwengcindezi okuqondile kunikeza impendulo esheshayo neqondile ebalulekile ekulawulweni kwe-copolymerization yerabha ye-ethylene-propylene. Uketshezi lwe-ethylene olunomfutho ophezulu kanye ne-propylene kudinga imingcele yengcindezi eqinile ngesikhathi sokudluliselwa kanye nokusabela. Ukushintshashintsha okungazelelwe kwengcindezi yethangi lokugcina uketshezi lwe-ethylene—ngokuvamile okuvela ekushiseni kwe-cryogenic—kungabangela ukuhlangana kokuphepha noma ukwehluleka okubi uma kungatholakali ngokushesha. Ukuphepha kwethangi lokugcina i-ethylene kuncike ekufundweni okuqhubekayo ukuze kuvikelwe ukuvuza kanye nokucindezela ngokweqile. I-Lonnmeter yomshini wokucindezela okuku-inthanethi weziphuzo iqapha lezi zinguquko ngesikhathi sangempela, ibonakalisa ngokunembile izimo zenqubo. Ama-transmitter okucindezela ezimboni agcina ukulinganiswa okuzinzile naphezu kokudlidliza, ukufudumala, noma ukujiya okuvamile ezimbonini zerabha ye-ethylene-propylene. Ukufakwa kahle kwe-transmitter yokucindezela kunciphisa ukukhukhuleka kwezinsimbi kanye nokuphazamiseka kwesignali, kusekela ukuhambisana nokuvimbela izingozi. Ukulinganiswa okuqondile kuvikela abasebenzi, izimpahla, kanye nobuqotho bomkhiqizo ngesikhathi sokuthuthwa nokugcinwa koketshezi lwe-ethylene, ukuqinisekisa ukusebenza okungenamthungo kuzo zonke izinhlelo zokusebenza zerabha ye-ethylene-propylene.
Umdwebo we-Ethylene
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Ukubuka Konke Kwenqubo Yezimboni
Uketshezi lwe-ethylene lucindezelwa ku-5–15 MPa bese luphonswa ngamapayipi ane-propylene kuma-reactor akhethekile e-ethylene-propylene.irabhaizinhlelo zokusebenza. Ama-transmitter okucindezela kwezimboni, njenge-transmitter yokucindezela eku-inthanethi ye-Lonnmeter yoketshezi, aqinisekisa amazinga okuphakela anembile ukuze alondoloze izici ze-copolymer. Amathangi okugcina uketshezi lwe-ethylene asebenzisa i-vacuum insulation enezindonga ezimbili, enciphisa ukuhanjiswa kokushisa ngaphansi kuka-0.022 W/(m·K), okunciphisa izingozi zokusha kokushisa. Ukufakwa kwe-transmitter yokucindezela okuqondile kuyimpoqo kuwo wonke amathangi okugcina i-ethylene ukuze kuvunyelwe ukuvuza okusheshayo kanye nokutholakala kokunyuka kokucindezela, kusekela ukuphepha kokuthutha koketshezi lwe-ethylene kanye nobuqotho bokuphakelwa kwe-reactor. Ukupholisa kanye nokuhlukaniswa kwesigaba segesi kuqinisekisa imigomo yokuhlushwa kwe-propylene phakathi kuka-35-70%, okunikeza izimo ezifanele zokusabela kwe-copolymerization. Ama-compounds erabha e-ethylene-propylene aqediwe adluliselwa futhi agcinwe ku-0.8-1.1 MPa, ngokuqapha okuqhubekayo ukuvimbela izingozi zokuhwamuka nokugcina ukuthembeka kwezinto ezimbonini zerabha ye-ethylene-propylene.
Izinselele Ekulinganisweni Kokucindezela Okuqondile
Uketshezi lwe-ethylene oluyi-cryogenic emathangini okugcina anezindonga ezimbili, afakwe i-vacuum cleaner luveza izinhlelo zokudlulisa ingcindezi yoketshezi eziku-inthanethi ezinguqukweni ezisheshayo zokucindezela. Ukuguquguquka okubangelwa ukuhwamuka kudlula ama-bar/min angu-25 ezimweni eziphazamisekile, okudinga ama-transmitter anezikhathi zokuphendula ze-millisecond. Ukuphepha kwethangi lokugcina i-ethylene kuncike ekulinganisweni kwe-inline okungu-24/7, njengoba ukulahlekelwa yi-insulation noma ukuvezwa emithonjeni yokushisa kungaholela ekucindezelekeni okuyingozi kungakapheli imizuzu. Amagesi ancibilikisiwe kanye ne-propylene esebenzayo ezisetshenzisweni zerabha ye-ethylene-propylene kubangela ukungasebenzi kahle kwesikhashana, kufaka phakathi ukwanda kwenzwa kufikela ku-±1% ngokugcwele, okwenza kube nzima ukulawula inqubo. Ama-transmitter okucindezela kwezimboni abhekene nokuphazamiseka okuvela ekufakweni kwenqubo, ukudlidliza, kanye nokujiya, okwehlisa ukunemba kwenzwa ngo-0.5% noma ngaphezulu futhi kunciphisa isikhathi sokuphila. Ukufakwa kwe-transmitter yokucindezela ezimbonini zerabha ye-ethylene-propylene kudinga izintambo eziqinile kanye nezindlu ezingamelani nesimo sezulu, njengoba amazinga okushisa avamile edlula u-45°C kanye namazinga okudlidliza afinyelela ku-5 g. Izinqubo zokuphepha kwezokuthutha ngoketshezi lwe-ethylene zidinga impendulo esheshayo evela kuma-transmitter okucindezela aku-inthanethi kuya kuma-interlock okuphepha, njengoba ukuvuza kanye nokucindezela ngokweqile emigqeni yokudlulisa kungakha izingxube eziqhumayo ngemizuzwana.
Izinzuzo Zokuhlanganisa Ama-Inline Pressure Transmitters
Ukufundwa kwengcindezi kwesikhathi sangempela okuvela ku-transmitter yengcindezi eku-inthanethi yoketshezi kuvumela ukulawulwa okusheshayo kwe-closed-loop ngesikhathi se-ethylene-propylene rubber copolymerization. Ukulinganisa okuqondile kunciphisa ingozi yokusabela okubalekayo kuma-reactor aqukethe uketshezi lwe-ethylene olucindezelwe kanye ne-propylene, kunciphisa ukuvalwa okungahleliwe ngamaphesenti angama-32 (ICIS, 2024).
Ukutholakala kokuvuza okusheshayo kanye nokucindezela ngokweqile emathangini okugcina uketshezi lwe-ethylene kanye namapayipi enqubo kunciphisa izikhathi zokuphendula. Impendulo yezinzwa eziqondile ibangela ukuxhumana kokuphepha ngaphambi kokuba kufinyelelwe imingcele eyingozi, okubalulekile ekuphepheni kwethangi lokugcina i-ethylene. Ucwaningo lubonisa ukuthi ukungenelela okusheshayo kuvimbela u-60% wezigameko zokukhishwa okungenzeka (Inqubekela phambili Yokuphepha Kwenqubo, 2025).
Ukuphathwa kwenqubo okuzenzakalelayo kufezwa kusetshenziswa ama-transmitter okucindezela ezimbonini ezindaweni ezibalulekile. Lokhu kunciphisa ukungenelela komqhubi futhi kuvumela ukuzenzekela okugcwele kwenqubo ezimbonini zerabha ye-ethylene-propylene. Izitshalo zibika ukwehla okungu-17% kwemvamisa yokulungiswa ngesandla ngokufakwa kwenzwa efanele (Chem. Eng. J., 2024).
Idatha enembile yokucindezela inciphisa ukulahlekelwa uketshezi lwe-ethylene ngesikhathi sokuhlukaniswa, ukudluliselwa, kanye nokugcinwa. Izitshalo zandisa isivuno sezinto ngo-4–8%, kunciphisa kakhulu izindleko zokusebenza.
Ukufakwa komshini wokudlulisa umfutho ohlangabezana nemingcele ebalulekile yokuphepha kugcina ukuhambisana nezindinganiso zikahulumeni zemisebenzi enobuthi nevuthayo. Lokhu kudala irekhodi eliqinile lokuhlolwa okuhlanganisa zonke izinhlelo zokusebenza zerabha ye-ethylene-propylene kanye nokuphepha kokuthuthwa koketshezi lwe-ethylene.
Cela Isilinganiso
I-Lonnmeter iletha isithumeli sokucindezela esiku-inthanethi esivivinywe ensimini soketshezi, esiklanyelwe izidingo eziqinile zezicelo zerabha ze-ethylene-propylene. Ochwepheshe be-Lonnmeter banikeza ukwesekwa kobuchwepheshe ekukhetheni isithumeli sokucindezela koketshezi esiku-inthanethi, esilungiselelwe izimo zenqubo ezinzima kanye nemidiya yoketshezi ehlanzekile kakhulu. Xhumana ukuze uthole izixazululo zobungcweti.
Isikhathi sokuthunyelwe: Jan-21-2026
