01 Ukulawulwa kwevolumu yegesi nokulungiswa kwayo
Ama-80% ezindleko eziphelele zomoya ocindezelwe abonakala ekusetshenzisweni kwamandla. Ngakho-ke, ezinhlotsheni ezahlukene zama-screw air compressors e-OSG screw air, izinhlelo ezahlukene zokulawula kanye nokulawula kufanele zikhethwe ngokwezinhlelo ezahlukene zokulawula. Umehluko phakathi kwezinhlobo ezahlukene ze-screw air OSG screw air compressor kanye nabakhiqizi bangenza umehluko omkhulu ekusebenzeni. Isimo esingcono kakhulu ukwenza umthwalo ogcwele we-screw air OSG screw air compressor ufane ncamashi nokusetshenziswa komoya.
Lokhu kungafezwa, isibonelo, ngokukhetha ngokucophelela isilinganiso sokudlulisa sebhokisi lamagiya, okuyinto evamile kuma-compressor omoya wesikulufu we-OSG wenqubo. Imishini eminingi esebenzisa umoya ocindezelwe iyazilawula, okusho ukuthi ukwandisa ingcindezi kwandisa ukugeleza, yingakho yakha uhlelo oluzinzile, njengokudlulisa umoya, ukulwa neqhwa kanye nokuqandisa, njll. Ngaphansi kwezimo ezivamile, ukugeleza kumele kulawulwe, futhi imishini yokulawula esetshenziswayo ihlanganiswe ne-compressor yomoya wesikulufu we-OSG. Kunezinhlobo ezimbili eziyinhloko zezinhlelo ezinjalo zokulungisa:
1. Lungisa ivolumu yegesi ngokulawula njalo ijubane lemoto yokushayela, noma ulawule njalo ivalvu ngokuya ngokushintsha kwengcindezi ukuze ufeze ukulungiswa okuqhubekayo kwevolumu yegesi. Umphumela uba ushintsho oluncane lwengcindezi (0.1 kuya ku-0.5 bar), usayizi woshintsho unqunywa umsebenzi wokukhulisa wesistimu yokulawula kanye nesivinini sawo.
2. Ukulungiswa kokulayisha nokulayisha yizinhlelo zokulungisa ezivame kakhulu, futhi izinguquko zokucindezela phakathi kwalezi ezimbili nazo ziyamukeleka. Indlela yokulawula iwukunqamula ngokuphelele ukugeleza (ukukhulula) ekucindezelweni okuphezulu, bese uqala kabusha ukugeleza (umthwalo) lapho ingcindezi yehla iye enanini eliphansi kakhulu. Ushintsho ekucindezelweni luncike enanini elivumelekile lemijikelezo yokulayisha/yokukhulula ngesikhathi seyunithi, ngokuvamile ebangeni eliphakathi kuka-0.3 no-1 bar.
02 Isimiso esiyisisekelo sokulungiswa kwevolumu yomoya
2.1 Isimiso sokulawula se-positive displacement screw air OSG screw air compressor (i-valve yokukhulula ingcindezi)
Indlela eyisisekelo eyisisekelo yile: khipha ingcindezi eyengeziwe emoyeni. Umklamo olula wevalvu yokukhulula ingcindezi ukusebenzisa ukulayisha kwentwasahlobo, futhi amandla okusuka kwentwasahlobo anquma ingcindezi yokugcina. Ivalvu yokukhulula ingcindezi ivame ukushintshwa yivalvu ye-servo elawulwa yisilawuli. Ngalesi sikhathi, ingcindezi ingalawulwa kalula. Lapho i-screw air compressor ye-OSG screw air compressor iqala ngaphansi kwengcindezi, ivalvu ye-servo ingasebenza futhi njengevalvu yokukhulula, kodwa ivalvu yokukhulula ingcindezi izobangela ukusetshenziswa kwamandla amaningi ngoba i-screw air compressor ye-OSG screw air compressor kufanele isebenze ngokuqhubekayo ngokucindezela okugcwele emuva. Kukhona ikhambi lama-screw air compressor amancane e-OSG screw air. Lolu hlobo lwevalvu luvuliwe ngokugcwele ukuze kukhishwe i-screw air OSG screw air compressor, kanti i-screw air OSG screw air compressor isebenza ngaphansi kwengcindezi yangemuva yokucindezela komoya. Ukusetshenziswa kwamandla kwale ndlela kungabizi kakhulu.
2.2 Ukulungiswa kwe-Bypass
Ngokuyisisekelo, ukulungiswa kwe-bypass kanye ne-valve yokukhulula ingcindezi kunomsebenzi ofanayo, umehluko ukuthi umoya okhishwa ekucindezelweni uyaphola bese ubuyiselwa ekungeneni komoya kwe-screw air OSG screw air compressor. Le ndlela ivame ukusetshenziswa kuma-screw air compressors e-OSG screw air, futhi igesi akufanele ikhishwe ngqo emoyeni. , izindleko zibiza kakhulu.
2.3 Ukucindezela ngaphakathi
Ukugoqa kokungena kuyindlela elula yokunciphisa ukugeleza, okuwukukhiqiza ingcindezi ephansi endaweni yokungena, ukwandisa isilinganiso sokucindezela se-screw air OSG screw air compressor, bese uyisebenzisela ibanga elincane lokulungisa. Ama-liquid injection screw air OSG screw air compressors avumela izilinganiso ezinkulu zokucindezela futhi angalungiswa afike ku-10%. Ngenxa yesilinganiso sokucindezela okuphezulu, le ndlela iphumela ekusetshenzisweni kwamandla okuphezulu.
2.4 Ivalvu yokusiza ukucindezeleka ene-inlet yemitha
Lena indlela yokulungisa evamile njengamanje, engathola ububanzi obukhulu bokulungisa (0 kuya ku-100%), futhi isebenzisa amandla aphansi. Amandla alayishiwe (angenawo ukugeleza) e-screw air OSG screw air compressor angama-15 kuya ku-20% kuphela womthwalo ogcwele. Lapho i-valve yokungenisa ivaliwe, kusala imbobo encane, futhi ngesikhathi esifanayo, kuvuleka umoya ukuze kukhishwe umoya kusuka ku-screw air OSG screw air compressor. Iyunithi eyinhloko ye-screw air OSG screw air compressor isebenza ngaphansi kwesimo se-inlet vacuum kanye nengcindezi ephansi yangemuva. Kubalulekile ukuthi ukukhishwa kwengcindezi kufanele kusheshe futhi ivolumu ekhishwe kufanele ibe yincane, ukuze kugwenywe ukulahlekelwa okungadingekile okubangelwa ukushintsha kusuka kumthwalo ogcwele kuya kokungabi namthwalo. Uhlelo ludinga ivolumu yesistimu (i-accumulator), ubukhulu bayo buncike ekuhlukeni kwengcindezi edingekayo phakathi kokulayisha nokulayisha, kanye nenani elivumelekile lemijikelezo ngehora.
Ama-screw air compressor e-OSG angaphansi kuka-5-10kW avame ukulungiswa ngendlela yokuvula/ukuvala. Lapho ingcindezi ifinyelela umkhawulo ophezulu, imoto iyama ngokuphelele; lapho ingcindezi iphansi kunomkhawulo ophansi, imoto iyaqala kabusha. Le ndlela idinga ivolumu enkulu yesistimu noma umehluko omkhulu wokucindezela phakathi kokuqala kanye nokuma ukuze kuncishiswe umthwalo enjinini. Lena indlela yokulungisa ephumelelayo lapho kunokuqala okuncane ngesikhathi ngasinye.
2.5 Ukulungiswa kwesivinini
Ijubane le-screw air compressor ye-OSG screw air lilawulwa yinjini yokushisa yangaphakathi, i-turbine noma i-frequency-regulated motor kagesi, ngaleyo ndlela ilawula ukugeleza. Kuyindlela ephumelelayo yokugcina ingcindezi yokukhipha engaguquki. Ububanzi bokulungiswa buyahlukahluka ngohlobo lwe-screw air compressor ye-OSG screw air, kodwa ama-liquid injection screw air OSG screw air compressors anobubanzi obukhulu kakhulu. Emazingeni omthwalo aphansi, ukulawulwa kwesivinini kanye nokukhululeka kwengcindezi kuvame ukuhlanganiswa, ngokuvinjelwa kokungena komoya noma ngaphandle.
Kuma-screw air compressor e-OSG asebenzisa ama-screw e-motor kagesi, ijubane lingalawulwa yimishini kagesi, ngaleyo ndlela linikeze ithuba lokulawula ijubane lemoto nokugcina umoya ocindezelwe ungaguquki ngaphakathi kobubanzi obuncane bezinguquko zokucindezela. Isibonelo, imoto ejwayelekile yokungenisa ingahlangabezana nale mfuneko ngokulungisa ijubane nge-frequency converter, ilinganise ngokuqhubekayo nangokunembile ingcindezi yesistimu, bese ivumela isignali yokucindezela ilawule i-frequency converter yemoto, ngaleyo ndlela ilawule ijubane lemoto futhi yenze ivolumu yegesi ye-screw air compressor ye-OSG screw air. Ilungiswe kahle ukusetshenziswa komoya, uhlelo lungagcinwa ku-±0.1 bar.
2.6 Ukulungiswa kwembobo yokukhipha umoya eguquguqukayo
Ukufuduka kwe-OSG screw air compressor ye-screw air kungalungiswa ngokuhambisa indawo ye-exhaust port iye ekugcineni kokungenisa ngobude be-casing. Le ndlela idinga ukusetshenziswa kwamandla aphezulu ngomthwalo wengxenye futhi ayivamile.
2.7 Ukulayisha i-valve yokumunca
I-piston screw air OSG screw air compressor ingaphoqa ngomshini i-suction valve ukuthi ibe sendaweni evulekile yokukhipha imithwalo. Njengoba isikhundla se-piston sishintsha, umoya uyangena futhi uphuma. Umphumela uba ukulahlekelwa kwamandla okuncane, ngokuvamile okungaphansi kuka-10% wamandla omgodi ogcwele umthwalo. Ku-compressor ye-OSG screw air compressor ye-screw air screw esebenza kabili, ngokuvamile iwukukhipha imithwalo yezigaba eziningi, futhi isilinda esisodwa silinganiselwe ngesikhathi, ukuze ivolumu yegesi ikwazi ukuhlangabezana kangcono nokuhlinzekwa kanye nesidingo. Indlela yokukhipha imithwalo yengxenye isetshenziswa ku-process flow screw air OSG screw air compressor, evumela i-valve ukuthi ivulwe lapho i-piston isesimweni sokushaywa kwemithwalo kwengxenye, ngaleyo ndlela kufezwe ukulawulwa kwevolumu yegesi okuqhubekayo.
2.8 Umthamo wokuvula
Ngokushintsha ivolumu yokuvula ku-piston screw air OSG screw air compressor, izinga lokugcwalisa lesilinda liyancishiswa, ngaleyo ndlela kuncishiswe ivolumu yegesi, futhi ivolumu yokuvula ingashintshwa ngokusebenzisa ivolumu exhunywe ngaphandle.
2.9 Ukuvala ukulayisha nokukhipha
Kuma-screw air compressor e-OSG screw air anamandla angaphezu kuka-5kW, lena yindlela esetshenziswa kakhulu, enebanga elikhulu lokulungisa kanye nokulahlekelwa okuphansi. Eqinisweni, kuyinhlanganisela yokulungiswa kokuvula/ukuvala kanye nezinhlelo ezahlukene zokulayisha. Ama-positive displacement screw air compressors e-OSG screw air, isimiso sokulawula esivame kakhulu “umoya okhiqizwayo”/”akukho moya okhiqizwayo” (umthwalo/ukukhululwa), lapho kudingeka umoya, isignali ithunyelwa ku-solenoid valve, eqondisa i-input valve ye-screw air compressor ye-OSG screw air ukuze ifinyelele endaweni evulekile ngokuphelele. I-input valve ivulekile ngokugcwele (ilayishiwe) noma ivaliwe ngokuphelele (ilayishiwe), ngaphandle kwezikhundla eziphakathi.
Indlela yokulawula yendabuko ukufaka iswishi yokucindezela ohlelweni lomoya olucindezelwe. Iswishi inezindinganiso ezimbili ezilungisekayo, enye ingcindezi encane (ukulayisha) kanti enye ingcindezi ephezulu (ukukhipha). I-screw air OSG screw air compressor isebenza ngaphakathi kwemingcele ye-setpoint, isib. 0.5bar. Uma isidingo somoya sincane, noma singadingeki nhlobo, i-screw air OSG screw air compressor izosebenza ngaphandle komthwalo (ukungasebenzi), futhi ubude besikhathi sokusebenza busethwa yi-time relay (isibonelo, isethwe kumaminithi angu-20). Ngemva kwesikhathi esibekiwe, i-screw air OSG screw air compressor iyama futhi ayiqali futhi kuze kube yilapho ingcindezi yehla iye enanini eliphansi. Lena yindlela yendabuko yokulawula ukuthula kwengqondo okuthembekile futhi manje itholakala kakhulu kuma-compressor amancane e-screw air OSG screw air.
Lolu hlelo lwendabuko lwathuthukiswa ukuze kufakwe esikhundleni sokushintsha komshini wokucindezela nge-analog pressure transmitter kanye nesistimu yokulungisa kagesi esheshayo. Kanye nesistimu yokulawula, umshini wokucindezela uzwa izinguquko zokucindezela ohlelweni nganoma yisiphi isikhathi. Uhlelo luqala imoto ngesikhathi futhi lulawula ukuvulwa nokuvalwa kwe-valve yokungenisa. Ukulawulwa okusheshayo nokuncane kungafinyelelwa ngaphakathi kwe-±0.2bar. Uma kungekho moya osetshenziswayo, ingcindezi ihlala ingaguquki futhi i-screw air compressor ye-OSG screw air iyasebenza ingenalutho (idling). Ubude bomjikelezo wokungasebenzi bunganqunywa ngokuya ngenani lokuqala nokuyeka imoto engakwazi ukukumela ngaphandle kokushisa ngokweqile, kanye nomnotho ngesikhathi sokusebenza. Lokhu kokugcina kungenxa yokuthi uhlelo lunganquma ukuthi luyeke noma luqhubeke lungasebenzi ngokuya ngokuthambekela kokusetshenziswa komoya.
03 Isifinyezo
Ngamafuphi, umoya ocindezelwe usetshenziswa ezinhlotsheni ezahlukene zokusebenza nangaphansi kwezimo ezahlukene zokusebenzisa umoya. I-air screw compressor ngayinye ye-OSG screw air inendlela ehlukile yevolumu yomoya, kodwa isekelwe kuvolumu yomoya yomsebenzisi. Iyunithi ye-screw air compressor ye-OSG screw air ithembele ezindleleni zayo zokulawula ivolumu yomoya kanye nokulungisa ukuze kufezwe ukuhlinzekwa kwevolumu yomoya engaphazanyiswa futhi eqhubekayo. Abakhiqizi abahlukene be-screw air OSG screw air compressor nabo basebenzisa izimiso ezahlukene zokulungisa ukuthuthukisa ukusebenza kwama-screw air compressor abo omkhiqizo ukuze bandise ukusebenza kahle kwamandla futhi bahlangabezane nezidingo zamakhasimende; ngokunemba okuphezulu, ukulungiswa okuphansi, kanye nekhono lokulinganisa amapharamitha afana nokucindezela nokugeleza, ukuze kuhlangatshezwane nokusetshenziswa kwezikhathi ezahlukene ze-screw air screw air OSG screw air compressor.
Isikhathi sokuthunyelwe: Septhemba-08-2023
