ASME SA179 ndi muyezo wa chitoliro chachitsulo chosasunthika cha chosinthira kutentha chomwe chinapangidwa ndi American Society of Mechanical Engineers (ASME), chomwe chimatchula zizindikiro zazikulu monga njira yopangira, kapangidwe ka mankhwala, mawonekedwe a makina ndi kulekerera kwa chitolirocho muyeso. Muyezo uwu umaonetsetsa kuti chitoliro chachitsulocho chili ndi kukana kwabwino kwa kupanikizika, kutentha koyendera komanso kukana dzimbiri m'malo osiyanasiyana osinthira kutentha, ndipo ndi choyenera kugwira ntchito molimbika m'mafakitale a mankhwala, magetsi, chakudya ndi mafakitale ena.
Ubwino waukulu wa njira yojambula yozizira
Chitoliro chopanda msoko chopangidwa ndi ozizira cha ku America chimagwiritsa ntchito ukadaulo wojambulira kutentha kwa chipinda ndipo chimapangidwa bwino ndi nkhungu. Chili ndi makhalidwe awa:
Kukula kolondola kwambiri: kulolerana kokhwima kwa mainchesi akunja (monga ± 0.10mm), makulidwe ofanana a khoma, oyenera kapangidwe ka chosinthira kutentha chotseka kwambiri.
Kulimbitsa mphamvu zamakina: kusintha kozizira kumapangitsa kuti tinthu tizikhala tolunjika, kumawonjezera mphamvu yokoka (≥325MPa) ndi kuuma, pamene tikupitirizabe kukhala olimba.
Ubwino wapamwamba kwambiri: khoma losalala lamkati (lolimba Ra≤0.8μm), limachepetsa kukana kwa madzi, komanso limapangitsa kuti kutentha kukhale koyenera.
Mafotokozedwe a kukula kwa kiyi
ASME SA179 imafotokoza zinthu zosiyanasiyana kuti ikwaniritse zosowa za mitundu yosiyanasiyana ya kutentha:
Kuchuluka kwa mainchesi akunja (mm) Kuchuluka kwa makulidwe a khoma (mm) Zochitika zomwe zimagwiritsidwa ntchito nthawi zambiri
12.7~25.4 1.24~2.11 Chosinthira kutentha cha mbale yaying'ono
25.4~38.1 2.11~3.81 Chosinthira kutentha kwa chipolopolo cha mankhwala ndi chubu
38.1~50.8 3.81~5.59 Kondensala yamphamvu ya siteshoni yamagetsi
Milandu yogwiritsira ntchito mafakitale
1. Makampani opanga mankhwala
Kuyeretsa mafuta: Machubu osinthira kutentha omwe amagwiritsidwa ntchito mu ma reactor a hydrogenation, olimbana ndi dzimbiri la hydrogen sulfide (H₂S concentration ≤50ppm).
Kupanga kwa asidi wa sulfuriki: Kuziziritsa mpweya wa SO₂ wotentha kwambiri (≤450℃), chophimba choletsa dzimbiri chimafunika mukamagwiritsa ntchito chitsulo cha kaboni.
2. Mphamvu yamagetsi
Mapaipi a Condenser: Mu malo opangira magetsi otentha, mapaipi achitsulo a SA179 amatha kupirira kuthamanga kwa nthunzi ya 0.1MPa, ndi kutentha kwa 50W/(m·K), komanso mphamvu ya condensation imawonjezeka ndi 15%.