Kukanikiza mpweya ndi njira yogwiritsira ntchito mphamvu zakunja kuti mpweya ukhale ndi mphamvu yowonjezera mphamvu, ndipo compressor ndiye amene amapanga mpweya wopanikizika. Chifukwa chake, magwiridwe antchito oyambira a mpweya wopanikizika wa screw air compressor ndi osiyana ndi mbali zinayi izi: kupanikizika, kuyenda, mphamvu ndi mphamvu yeniyeni.
Kugwira ntchito koyambira kwa screw air compressor air end - kupanikizika kwa mpweya
Kupeza mphamvu yokwanira ya mpweya wopanikizika ndiyo ntchito yofunikira kwambiri ya compressor ya mpweya, ndipo screw air compressor si yosiyana. Screw air compressor air end imawonjezera mphamvu ya mpweya pogwiritsa ntchito mphamvu zakunja. Kupanikizika kukakhala kwakukulu, mphamvu zambiri zimagwiritsidwa ntchito, komanso zofunikira za mpweya zimakhala zapamwamba. Nthawi zambiri timagawa ma compressor a mpweya m'magulu anayi malinga ndi kuthamanga kwa mpweya:
Kuthamanga kochepa: 0.2~1.0MPa Kuthamanga kwapakati: 1.0~10MPa Kuthamanga kwakukulu: 10~100MPa Kuthamanga kwakukulu: pamwamba pa 100MPa
Chokometsera mpweya chokulungira nthawi zambiri chimakhala ndi mphamvu yotulutsa ya 0.2 ~ 4.0MPa, zomwe zikutanthauza kuti magwiridwe ake, kuthekera kwake komanso ndalama zake zimakhala bwino pamlingo uwu. Izi zimatsimikiziridwa ndi kapangidwe ndi momwe mpweya wa compressor umagwirira ntchito, komanso ndi gawo la kupanikizika lomwe likufunika kwambiri pamsika.
Kupanikizika kwa mpweya wopanikizika komwe kumaperekedwa ndi compressor ya mpweya kumayesedwa makamaka ndi chiŵerengero cha kupanikizika, chomwe ndi chiŵerengero cha kupanikizika kotulutsa Pd ndi kukakamiza kotsitsa Ps. Chiŵerengerocho chikakhala chachikulu, kupanikizika kotulutsa kumakwera. ε=Pd/Ps Fomula (6)
Pa injini yayikulu ya screw air compressor, pali chiŵerengero cha kupanikizika kwamkati ndi chiŵerengero cha kupsinjika kwakunja.
Chiŵerengero cha kupanikizika kwa mkati: chiŵerengero cha kupanikizika mu voliyumu ya pakati pa mano a injini yayikulu ndi kupsinjika kwa kukakamiza, komwe kumatsimikiziridwa ndi malo ndi mawonekedwe a madoko okakamiza ndi otulutsa utsi;
Chiŵerengero cha kuthamanga kwa mpweya wakunja: chiŵerengero cha kuthamanga kwa mpweya mu chitoliro chotulutsa mpweya ndi kuthamanga kwa mpweya. Kuthamanga kwa mpweya ndi mpweya wotulutsa mpweya wofunikira pa ntchito kapena kayendedwe ka madzi.
Ngati chiŵerengero cha kupanikizika kwamkati chili ≠ ndi chiŵerengero cha kupanikizika kwakunja, injini yayikulu idzagwiritsa ntchito mphamvu zambiri; pamene chiŵerengero cha kupanikizika kwamkati = chiŵerengero cha kupanikizika kwakunja, injini yayikulu imakhala bwino kwambiri.
Pa injini yaikulu ya screw air compressor, pamene injini yaikulu, kutentha kwa malo ozungulira, mphamvu yokoka, liwiro la injini yaikulu ndi zinthu zina zili zofanana, mphamvu yotulutsa ikakwera, mphamvu yogwiritsidwa ntchito imakwera.
Kugwira ntchito koyambira kwa screw air compressor air end - flow
Kuyenda kwa mpweya nthawi zambiri kumakhala ndi kuyenda kwa madzi ambiri ndi kuchuluka kwa madzi. Mu makampani opanga makina opondereza mpweya, nthawi zambiri timagwiritsa ntchito kuchuluka kwa madzi ngati njira yoyezera kuyenda kwa madzi, komwe kumatchedwanso kuchuluka kwa madzi otuluka kapena kuchuluka kwa madzi otuluka m'dziko langa: pansi pa kuthamanga kofunikira kwa mpweya, kuchuluka kwa mpweya wotuluka ndi compressor pa unit time kumasinthidwa kukhala momwe mpweya umalowera, ndiko kuti, kuchuluka kwa madzi otuluka pa chitoliro choyamba cholowera madzi ndi kutentha ndi chinyezi cholowera madzi. Chigawocho ndi m3/min. Kuyenda kwa madzi kumagawidwa m'magulu amadzi otuluka ndi kuchuluka kwa madzi otuluka.
Kawirikawiri, zitsanzo, zosankha, ndi zilembo za makina zimagwiritsa ntchito kayendedwe ka voliyumu yokhazikika. Chifukwa cha mafakitale, chigawo ndi kagwiritsidwe ntchito, kayendedwe ka voliyumu yokhazikika pamsika wa mpweya wopanikizika kamakhala ndi matanthauzo awiri malinga ndi kusiyana kwa momwe zinthu zilili (kutentha, kupanikizika ndi zigawo zake):
Mkhalidwe wokhazikika ndi kupanikizika P=101.325KPa; kutentha kokhazikika T=0℃; chinyezi chocheperako ndi 0%. Nthawi zambiri chimapezeka m'mafakitale a gasi, makampani opanga mankhwala kapena zikalata zolipirira, zomwe zimatchedwa "standard square", nthawi zambiri zimakhala ndi chizindikiro "VN" ndi unit ya Nm3/min.
Mkhalidwe wokhazikika ndi kupanikizika P = 101.325KPa; kutentha kokhazikika T = 20℃; chinyezi chocheperako ndi 0%. Nthawi zambiri chimagwiritsidwa ntchito mu miyezo yamakampani opanga mpweya wopanikizika ndipo chimatchedwa "mikhalidwe yogwirira ntchito yokhazikika". Chizindikiro nthawi zambiri chimakhala "V" ndipo unit ndi m3/min.
Kawirikawiri, kuchuluka kwa voliyumu komwe kumagwiritsidwa ntchito mumakampani athu opanga ma compressor a mpweya ndi komwe kumatchedwa komaliza. Kusintha kwa kuchuluka kwa voliyumu m'magawo awiriwa kumatha kuwerengedwa pogwiritsa ntchito njira iyi:
V(m3/mphindi)=1.0732VN(Nm3/min) Fomula (7)
Pa injini yaikulu ya screw air compressor, pansi pa mikhalidwe ina yomweyi, mtunda wa pakati pa rotor ukakhala waukulu, kuchuluka kwa voliyumu yake kumawonjezeka; liwiro la injini yaikulu likakwera, kuchuluka kwa voliyumu yake kumawonjezeka.
Kuthamanga kwa VVolume = qv voliyumu yokakamiza injini yayikulu × n liwiro la mutu Fomula (8)
qv=CΨqv0Z1n=CΨCn1nλD3 Fomula (9)
Kumene Z1——chiwerengero cha mano a rotor wamwamuna; n——liwiro la rotor wamwamuna; λ——chiŵerengero cha mawonekedwe a rotor; D——m'mimba mwake wakunja wa rotor wamwamuna.
Chifukwa chake, pofuna kuchepetsa ndalama, nthawi zambiri timachepetsa mitundu ya injini zazikulu ndipo timatha kusintha kuchuluka kwa utsi wa compressor ya mpweya podziwa liwiro la injini yayikulu kuti ikwaniritse zosowa za msika.
Komabe, liwiro la injini yaikulu ya screw compressor silingakhale lalikulu kwambiri, nthawi zambiri limakhala pakati pa 800 ndi 10,000 rpm. Chifukwa chake, wopanga injini yayikulu ya screw amapanga injini zazikulu zokhala ndi mitundu yosiyanasiyana ya kuyenda kwa voliyumu kuti zikwaniritse zofunikira za screw compressor.
Malinga ndi kuchuluka kwa mpweya wopanikizika, ma compressor a mpweya nthawi zambiri amagawidwa m'magulu awiri:
Kompresa yaying'ono<1m3>10～<100 m3min; large compressor ≥100 min
Chokometsera mpweya chachikulu chokulungira ndi choyenera makina amodzi okhala ndi mphamvu ya 1 ~ 100 m3/min, chomwe ndi chodalirika komanso chotsika mtengo, komanso ndi chitsanzo chachikulu pamsika wa chokometsera mpweya.
Kupanikizika kukakhala kwakukulu, mphamvu ya injini yayikulu imagwiritsa ntchito kwambiri; kuchuluka kwa mphamvu ya injini yayikulu kukakhala kwakukulu, mphamvu ya injini yayikulu imagwiritsa ntchito kwambiri.
Mphamvu yeniyeni ya injini yayikulu ya screw air compressor ikakhala yocheperako, mphamvu yake imagwiritsidwa ntchito pang'ono ndipo mphamvu yake imachepa. Ngati injini yayikulu ikuyenda bwino, mphamvu yotulutsa imakhala yokwera, mphamvu ya shaft ya injini yayikulu imakhala yokulirapo, motero mphamvu yake yeniyeni imakulirapo.
Injini iliyonse ya screw air compressor imakhala ndi mphamvu yeniyeni yeniyeni, yomwe imagwirizana ndi liwiro la injini yayikulu. Liwiro la injini yayikulu likachepa kwambiri, kutuluka kwa mpweya kumawonjezeka, kuchuluka kwa mpweya kumachepa, ndipo mphamvu yeniyeni imakwera; liwiro la injini yayikulu likakwera kwambiri, kukangana kumawonjezeka, mphamvu ya shaft imawonjezeka, ndipo mphamvu yeniyeni imakwera. Koma payenera kukhala liwiro labwino kwambiri lomwe limapangitsa mphamvu yeniyeni kukhala yotsika kwambiri. Ichi ndichifukwa chake sikoyenera kunena kuti injini yayikulu ikakula, mphamvu imasungidwa kwambiri.
Tikamapanga ma screw air compressors ndi ma variable frequency air compressors, pamene tikutsimikiza kuti ndi abwino, tiyeneranso kuganizira za kayendetsedwe ka injini yayikulu, kukhazikika kwake, komanso momwe imagwirira ntchito. Chifukwa chake, tidzagwiritsa ntchito mphamvu yeniyeni ya injini yayikulu kupanga ndikupanga ma screw air compressors okhala ndi mphamvu ndi kayendedwe kosiyanasiyana.
Nthawi yotumizira: Sep-11-2024
