Kukanikiza mpweya ndi njira yogwiritsira ntchito mphamvu zakunja kuti mpweya uwonjezere mphamvu. Compressor ndiye amene amapanga mpweya wopanikizika. Chifukwa chake, magwiridwe antchito oyambira a mpweya wa compressor wa screw air 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 ma compressor a mpweya, ndipo ma compressor a mpweya wopindika nawonso ndi osiyana. Injini yayikulu ya ma compressor a mpweya wopindika imawonjezera mphamvu ya mpweya pogwiritsa ntchito mphamvu zakunja. Kupanikizika kukakhala kwakukulu, mphamvu zambiri zimagwiritsidwa ntchito, komanso zofunikira za injini yayikulu zimakhala zapamwamba. Nthawi zambiri timagawa ma compressor a mpweya m'magulu anayi malinga ndi kuthamanga kwa mpweya:
Kuthamanga kochepa: 0.2 ~ 1.0MPa
Kupanikizika kwapakati: 1.0 ~ 10MPa
Kuthamanga kwakukulu: 10 ~ 100MPa
Kupanikizika kwakukulu: pamwamba pa 100MPa
Ma compressor a mpweya wopindika nthawi zambiri amakhala ndi mphamvu yotulutsa ya 0.2 ~ 4.0MPa, zomwe zikutanthauza kuti magwiridwe antchito awo, kuthekera kwawo komanso ndalama zomwe amagwiritsa ntchito 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 kwa kutulutsa Pd ndi kukakamiza kwa suction Ps. Chiŵerengerocho chikakhala chachikulu, kupanikizika kwa kutulutsa kumakwera.
Fomula ya ε=Pd/Ps (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 mafotokozedwe ndi miyezo ya makina opopera 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 mpweya wopopera mpweya pa nthawi iliyonse 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 a madzi 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 cha fomula "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/min)=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 voliyumu ya V = 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.
Mphamvu yeniyeni ya mpweya wa compressor ndi kuwerengera kwa mpweya wa screw air end
Mphamvu ya shaft yomwe imagwiritsidwa ntchito ndi kuchuluka kwa voliyumu pa unit nthawi iliyonse pomwe mpweya wa compressor ukugwira ntchito. Unit ya mphamvu yeniyeni ndi: kW/(m3/min).
Fomula yowerengera ndi iyi:
Mapeto a mpweya wa SER = Pd mapeto a mpweya/qv Fomula (10)
Mphamvu ya mpweya wa Pd - mphamvu ya shaft ya mpweya;
qv - kuchuluka kwa mpweya womwe umayenda nthawi iliyonse
Mphamvu yake yeniyeni ndi:
SER mapeto a mpweya = 117/23.1 = 5.065 (kW/(m3/mphindi))
Mphamvu yeniyeni ya mpweya wa compressor wa screw ikakhala yocheperako, mphamvu yake imagwiritsidwa ntchito pang'ono ndipo mphamvu yake imakhala yabwino. Ngati mpweya ukuyenda bwino, mphamvu yotulutsa mpweya imakhala yokwera, mphamvu ya mpweya imakhala yokulirapo, motero mphamvu yake yeniyeni imakhala yokulirapo.
Chokometsera chilichonse cha screw chimakhala 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 compressor ndi ma variable frequency compressor, tiyenera kuwonetsetsa kuti injini yayikulu ndi yabwino komanso yotsika mtengo, yokhazikika komanso yosinthasintha. Chifukwa chake, tidzagwiritsa ntchito mphamvu yeniyeni ya injini yayikulu kupanga ndikupanga ma screw compressor okhala ndi mphamvu ndi kayendedwe kosiyanasiyana.
Nthawi yotumizira: Julayi-17-2024
