Ukucinezela igesi yinkqubo yokusebenzisa amandla angaphandle ukuze kufumaneke amandla anokubakho okufumana uxinzelelo lwegesi. I-compressor ngumdali wegesi ecinezelweyo. Ke ngoko, ukusebenza okusisiseko kwesiphelo somoya we-screw air compressor akwahlulwa kwezi nkalo zine: uxinzelelo, ukuhamba, amandla kunye namandla athile.
Ukusebenza okusisiseko kwe-screw air compressor air end - uxinzelelo lomoya
Ukufumana amandla oxinzelelo lomoya ocinezelweyo yeyona ndlela ilula yokusebenza kwee-compressor zomoya, kwaye ii-screw air compressors azifani. Injini ephambili yee-screw air compressors yonyusa uxinzelelo lomoya ngokusebenzisa amandla angaphandle. Okukhona uxinzelelo luphezulu, kokukhona kusetyenziswa amandla amaninzi, kwaye kokukhona iimfuno zenjini ephambili ziphezulu. Ngokwesiqhelo sahlula ii-air compressors zibe ziindidi ezine ngokwexinzelelo lokukhupha:
Uxinzelelo oluphantsi: 0.2 ~ 1.0MPa
Uxinzelelo oluphakathi: 1.0 ~ 10MPa
Uxinzelelo oluphezulu: 10~100MPa
Uxinzelelo oluphezulu kakhulu: ngaphezulu kwe-100MPa
Ii-screw air compressors zihlala zine-output pressure ye-0.2 ~ 4.0MPa, oko kuthetha ukuba ukusebenza kwazo, ukwenzeka kwazo kunye noqoqosho lwazo zingcono kolu luhlu. Oku kuxhomekeka kulwakhiwo kunye nendlela yokusebenza ye-compressor air end, kwaye ikwalicandelo loxinzelelo elinemfuno ephezulu kwimarike.
Uxinzelelo lomoya oluxinzelelweyo olunikezelwa yi-air compressor lulinganiswa ikakhulu ngumlinganiselo woxinzelelo, ongumlinganiselo woxinzelelo lwemveliso Pd kuxinzelelo lokufunxa Ps. Okukhona umlinganiselo uphezulu, kokukhona uxinzelelo lwemveliso luphezulu.
Ifomula ye-ε=Pd/Ps (6)
Kwinjini ephambili ye-screw air compressor, kukho umlinganiselo woxinzelelo lwangaphakathi kunye nomlinganiselo woxinzelelo lwangaphandle.
Umlinganiselo woxinzelelo lwangaphakathi: umlinganiselo woxinzelelo kumthamo wamazinyo phakathi kwenjini ephambili kuxinzelelo lokufunxa, olumiselwa yindawo kunye nokuma kweendawo zokufunxa kunye nee-exhaust ports;
Umlinganiselo woxinzelelo lwangaphandle: umlinganiselo woxinzelelo kumbhobho wokukhupha umoya ukuya kuxinzelelo lokufunxa. Uxinzelelo lokufunxa kunye noxinzelelo lokufunxa umoya olufunekayo kwiimeko zokusebenza okanye ukuhamba kwenkqubo.
Xa umlinganiselo woxinzelelo lwangaphakathi ≠ umlinganiselo woxinzelelo lwangaphandle, injini ephambili iya kusebenzisa amandla amaninzi; xa umlinganiselo woxinzelelo lwangaphakathi = umlinganiselo woxinzelelo lwangaphandle, injini ephambili ikwimeko efanelekileyo.
Kwinjini ephambili ye-screw air compressor, xa injini ephambili, ubushushu obuphakathi, uxinzelelo lokufunxa, isantya senjini ephambili kunye nezinye izinto zifana, kokukhona uxinzelelo lokukhupha luphezulu, kokukhona ukusetyenziswa kwamandla kuphezulu.
Ukusebenza okusisiseko kwe-screw air compressor air end - flow air end - flow
Ukuhamba komsinga kudla ngokwenziwa kukuhamba kobuninzi kunye nokuhamba komthamo. Kwiinkcukacha zoshishino kunye nemigangatho yeenkqubo ze-air compressor, sidla ngokusebenzisa ukuhamba komthamo njengendlela yokulinganisa ukuhamba komsinga, ekwabizwa ngokuba yi-exhaust volume okanye ukuhamba kwegama leplate kwilizwe lam: phantsi koxinzelelo olufunekayo lomsinga, umthamo wegesi okhutshwa yi-air compressor ngexesha ngalinye uguqulwa ube yimeko yokungenisa, oko kukuthi, ixabiso lomthamo woxinzelelo lokufunxa kumbhobho wokungenisa wesigaba sokuqala kunye nobushushu bokufunxa kunye nokufuma. Iyunithi yi-m3/min. Ukuhamba komthamo kwahlulwe kube kukuhamba komthamo wokwenyani kunye nokuhamba komthamo oqhelekileyo.
Ngokwesiqhelo, iisampulu, ukhetho, kunye neepleyiti zamagama zoomatshini zisebenzisa ukuhamba komthamo okuqhelekileyo. Ngenxa yoshishino, ummandla kunye nokusetyenziswa, ukuhamba komthamo okuqhelekileyo kwimfuno yemarike yomoya ocinezelweyo kuneenkcazo ezimbini ngokwemeko esemgangathweni (ubushushu, uxinzelelo kunye nezinto):
Imeko eqhelekileyo yingcinezelo P=101.325KPa; ubushushu obuqhelekileyo T=0℃; ukufuma okuthelekisekayo yi-0%. Ihlala ifunyanwa kwigesi yemizi-mveliso, ishishini leekhemikhali okanye amaxwebhu okubhida, abizwa ngokuba yi-"standard square", ngesiqhelo inophawu lwefomula ethi "VN" kunye neyunithi ye-Nm3/min.
Imeko eqhelekileyo yingcinezelo P = 101.325KPa; ubushushu obuqhelekileyo T = 20℃; ukufuma okulinganiselweyo yi-0%. Idla ngokusetyenziswa kwimigangatho yeshishini lomoya ocinezelweyo kwaye ibizwa ngokuba "ziimeko zokusebenza ezisemgangathweni". Uphawu ludla ngokuba ngu-"V" kwaye iyunithi yi-m3/min.
Ngokwesiqhelo, izinga lokuhamba komthamo oqhelekileyo osetyenziswa kwishishini lethu le-air compressor lelokugqibela. Ukuguqulwa kwezinga lokuhamba komthamo phantsi kwezi meko zimbini kunokubalwa ngefomyula:
V(m3/min)=1.0732VN(Nm3/min) Ifomula (7)
Kwinjini ephambili ye-screw air compressor, phantsi kwezinye iimeko ezifanayo, okukhona umgama omkhulu phakathi kwe-rotor, kokukhona isantya sokuhamba komthamo wayo sikhulu; okukhona isantya senjini ephambili siphezulu, kokukhona isantya sokuhamba komthamo wayo sikhulu.
Isantya sokuhamba komthamo we-V = i-qv isantya sokucinezelwa kwenjini ephambili × isantya sentloko se-n Ifomula (8)
qv=CΨqv0Z1n=CΨCn1nλD3 Ifomula (9)
Apho u-Z1——inani lamazinyo e-rotor yesilisa; n——isantya se-rotor yesilisa; umlinganiselo womphezulu we-rotor; u-D——ububanzi bangaphandle be-rotor yesilisa.
Ngoko ke, ngenxa yokonga imali, sidla ngokunciphisa iintlobo zeenjini eziphambili kwaye sinokulungisa umthamo wokukhupha umoya wecompressor yomoya ngokumisela isantya senjini ephambili ukuhlangabezana neemfuno zemarike.
Nangona kunjalo, isantya senjini ephambili ye-screw compressor asinakuba phezulu kakhulu, ngesiqhelo siphakathi kwe-800 kunye ne-10,000 rpm. Ke ngoko, umenzi we-screw main engine uphuhlisa iinjini eziphambili ezinemigangatho eyahlukeneyo yokuhamba komthamo ukuhlangabezana neemfuno zokuhamba kwe-screw compressor.
Amandla athile kunye nokubalwa kwesiphelo somoya we-screw compressor
Amandla eshafti asetyenziswa kukuhamba komthamo ngeyunithi nganye xa isiphelo somoya wecompressor yomoya sisebenza. Iyunithi yamandla athile yi: kW/(m3/min).
Ifomula yokubala yile ilandelayo:
Isiphelo somoya se-SER = Isiphelo somoya se-Pd/qv Ifomula (10)
Isiphelo somoya se-Pd – amandla omgodi womoya;
qv – ukuhamba komthamo womoya ngexesha ngalinye
Ixabiso layo lamandla elithile yile:
Isiphelo somoya se-SER = 117/23.1 = 5.065 (kW/(m3/min))
Okukhona ixabiso lamandla athile esiphelo somoya we-screw air compressor lincinci, kokukhona ukusetyenziswa kwamandla kwayo kuncipha kwaye ukusebenza kwesiphelo somoya kuyanda. Phantsi kwemeko yokuhamba rhoqo, uxinzelelo lokukhupha luphezulu, kokukhona amandla eshafti yomoya esiya kuba makhulu, ngoko ke ixabiso lamandla ayo athile liyakhula.
I-screw compressor nganye inexabiso lamandla elithile elifanelekileyo, elihambelana nesantya senjini ephambili. Xa isantya senjini ephambili siphantsi kakhulu, ukuvuza kuyanda, umthamo wegesi uyancipha, kwaye ixabiso lamandla elithile liba phezulu; xa isantya senjini ephambili siphezulu kakhulu, ukungqubana kuyanda, amandla eshaft ayanda, kwaye ixabiso lamandla elithile liba phezulu. Kodwa kufuneka kubekho isantya esifanelekileyo esenza ixabiso lamandla elithile libe liphantsi. Yingakho kungachanekanga ukuthi xa injini ephambili inkulu, kokukhona yonga amandla ngakumbi.
Xa siyila ii-screw compressors kunye nee-variable frequency compressors, kufuneka siqinisekise umgangatho ngelixa sikwaqwalasela uqoqosho, ukubekwa emgangathweni kunye nokuguquguquka kwenjini ephambili. Ke ngoko, siza kusebenzisa i-main engine power value curve ukuyila nokuphuhlisa ii-screw compressors ezineengcinezelo kunye nokuhamba okuhlukeneyo.
Ixesha leposi: Julayi-17-2024
