Ulubona njani uhlengahlengiso olungenanyathelo lomoya kwi-screw compressor
1. Iimpawu ze-screw compressor
I-Screw compressors yenziwe ngezikrufu ezinxuseneyo, ezidibanisa amabhinqa kunye nezamadoda.Ziye zisetyenziswe ngokubanzi kwiinkqubo zefriji eziphakathi kunye ezinkulu okanye i-compressor ye-gas compressors ekucoceni kunye nezityalo zemichiza.Uxinzelelo lwe-Screw lwahlulwe lwaba ziindidi ezimbini: isikrufu esinye kunye nesikrufu samawele.I-screw compressor idla ngokubhekisa kwi-twin screw compressor.I-Screw compressors ineempawu ezilandelayo:
(1) I-screw compressor inesakhiwo esilula kunye nenani elincinci lamalungu.Akukho zixhobo zokunxiba ezinje ngeevalvu, imisesane yepiston, iirotor, iibheringi, njl., kwaye amandla ayo kunye nokumelana nokunxiba kuphezulu.
(2) I-screw compressor ineempawu zokuhanjiswa kwegesi ngenkani, oko kukuthi, umthamo wokukhupha phantse awuchatshazelwa luxinzelelo lokukhupha, akukho ntshukumo eyenzekayo xa umthamo wokukhupha umncinci, kwaye usenokugcina uxinzelelo kuluhlu olubanzi. yeemeko zokusebenza.Ukusebenza okuphezulu.
(3) Icompressor Screw ayichukumiseki kakhulu kwihamile engamanzi kwaye inokupholiswa ngenaliti yeoli.Ngoko ke, phantsi komlinganiselo ofanayo woxinzelelo, ubushushu bokukhutshwa buphantsi kakhulu kunohlobo lwepiston, ngoko ke umlinganiselo woxinzelelo lwenqanaba elilodwa liphezulu.
(4) Ulungelelwaniso lwevalve yesilayidi yamkelwa ukuqonda uhlengahlengiso olungenanyathelo lwamandla.
2. Umgaqo wohlengahlengiso lwevalve yesilayidi ye-screw compressor
Ivalve yesilayidi isetyenziselwa ulawulo olungenanyathelo lomthamo.Ngexesha lokuqalisa okuqhelekileyo, eli candelo alilayishwanga.Ivalve yesilayidi ilawulwa yiphaneli yokulawula encinci ngoxinzelelo lweoyile, ekugqibeleni itshintshe amandla okusebenza kwecompressor.
I-valve yesilayidi yokulungiswa kwamandla yinxalenye yesakhiwo esisetyenziselwa ukulungelelanisa ukuhamba kwevolumu kwi-screw compressor.Nangona kukho iindlela ezininzi zokulungelelanisa ukuhamba kwevolumu ye-screw compressor, indlela yokulungelelanisa usebenzisa i-valve yesilayidi isetyenziswe ngokubanzi, ngakumbi kwi-injection molding.I-oyile screw refrigeration kunye nenkqubo compressors zithandwa kakhulu.Njengoko kubonisiwe kuMfanekiso 1, le ndlela yokulungelelanisa kukufaka ivalve yesilayidi yohlengahlengiso kwi-screw compressor body kwaye ibe yinxalenye yomzimba wecompressor.Ifumaneka ekudibaneni kwezangqa ezibini zangaphakathi kwicala loxinzelelo oluphezulu lomzimba kwaye inokuhamba iphindele ngasemva naphambili kwicala elihambelana ne-cylinder axis.
Umgaqo we-valve yesilayidi ukulungelelanisa izinga lokuhamba kwe-volumetric ye-screw compressor isekelwe kwiimpawu zenkqubo yokusebenza ye-screw compressor.Kwi-screw compressor, njengoko i-rotor ijikeleza, uxinzelelo lwegesi ecinezelweyo lukhula ngokuthe ngcembe kunye ne-axis ye-rotor.Ngokubhekiselele kwindawo yendawo, ihamba ngokuthe ngcembe ukusuka ekupheleni kokufunxa kwe-compressor ukuya ekupheleni kokukhupha.Emva kokuba icala eliphezulu loxinzelelo lomzimba livula, xa i-rotors ezimbini ziqala ukuthungatha kwaye zizame ukunyusa uxinzelelo lwegesi, enye igesi iya kudlula ngokuvula.Ngokucacileyo, isixa segesi esigqithisiweyo sihambelana nobude bokuvula.Xa umgca wokuqhagamshelana uhambela ekupheleni kokuvula, igesi eseleyo ivalwe ngokupheleleyo, kwaye inkqubo yokunyanzeliswa kwangaphakathi iqala ngeli nqanaba.Umsebenzi owenziwe yi-screw compressor kwi-bypass gas ukusuka ekuvuleni isetyenziselwa kuphela ukuyikhupha.Ke ngoko, ukusetyenziswa kwamandla kwecompressor sisimbuku somsebenzi owenziweyo ukucinezela igesi ekhutshweyo ekugqibeleni kunye nomsebenzi wokukhuhlana komatshini.Ngoko ke, xa i-valve yesilayidi yokulungiswa kwamandla isetyenziselwa ukulungelelanisa izinga lokuhamba kwe-volumetric ye-screw compressor, i-compressor inokugcina ukusebenza okuphezulu phantsi kwemeko yokulungelelanisa.
Kwiicompressors zokwenyani, ngokuqhelekileyo ayisiyomngxuma kwi-casing, kodwa isakhiwo se-porous.I-valve yesilayidi ihamba kwi-groove phantsi kwe-rotor kwaye ivumela ukulungiswa okuqhubekayo kobukhulu bokuvulwa.Igesi ekhutshwe kwindawo yokuvula iya kubuyela kwi-port yokufunxa ye-compressor.Ekubeni icompressor eneneni ayisebenzi kule ndawo yegesi, ubushushu bayo abunyuki, ngoko akufuneki ukuba ipholiswe ngaphambi kokuba ifike kwirhasi eqhelekileyo kwizibuko lokufunxa..
Ivalve yesilayidi inokuhamba kuyo nayiphi na indlela ngokweemfuno zenkqubo yokulawula.Kukho iindlela ezininzi zokuyiqhuba.Eyona ndlela iqhelekileyo kukusebenzisa i-cylinder ye-hydraulic, kwaye inkqubo yeoli ye-screw compressor ngokwayo ibonelela ngoxinzelelo lweoyile efunekayo.Koomatshini abambalwa, ivalve yesilayidi iqhutywa yinjini encitshisiweyo.
Ngokwethiyori, i-spool kufuneka ibe ubude obufanayo ne-rotor.Ngokufanayo, umgama ofunekayo ukuze i-valve yesilayidi ihambe ukusuka kumthwalo opheleleyo ukuya kumthwalo ongenanto kufuneka ifane ne-rotor, kwaye i-cylinder ye-hydraulic kufuneka ibe nobude obufanayo.Nangona kunjalo, ukuziqhelanisa kubonisile ukuba nokuba ubude bevalve yesilayidi bufutshane kancinane, iimpawu zokulawula ezilungileyo zisenokuphunyezwa.Oku kungenxa yokuba xa i-bypass ivula kuqala kufuphi nobuso besiphelo sokufunxa, indawo yayo incinci kakhulu, uxinzelelo lwegesi luncinci kakhulu ngeli xesha, kwaye ixesha elithathayo ukuba i-rotor meshing amazinyo itshayele kwindawo yokuvula nayo. mfutshane kakhulu, ngoko ke kuya kubakho kuphela isixa esincinci Enye yegesi ekhutshwayo.Ngoko ke, ubude bokwenene be-valve yesilayidi bunokuncitshiswa malunga ne-70% yobude becandelo elisebenzayo le-rotor, kwaye inxalenye eseleyo yenziwe igxininise, ngaloo ndlela inciphisa ubukhulu be-compressor.
Iimpawu ze-valve yesilayidi yokulungiswa kwamandla ziya kuhluka kunye nobubanzi be-rotor.Oku kungenxa yokuba ummandla we-bypass port obangelwa ukuhamba kwevalve yesilayidi ilingana nesikwere sobubanzi be-rotor, ngelixa umthamo wegesi kwigumbi loxinzelelo lilingana nobubanzi be-rotor.Ngokulinganayo kwityhubhu ye.Kuyafaneleka ukuba uqaphele ukuba xa i-compressor icinezela igesi, iphinda ikhulise uxinzelelo lweoli ejojowe, kwaye ekugqibeleni ikhuphe kunye negesi.Ukuze ioli ikhutshwe ngokuqhubekayo, umthamo othile wokukhupha kufuneka ugcinwe.Ngaphandle koko, phantsi kweemeko ezingenakuthwalwa ngokupheleleyo, ioyile iya kuqokelelana kwigumbi loxinzelelo, ibangele ukuba icompressor yomoya ingakwazi ukuqhubeka nokusebenza.Ukuze i-oyile ikhutshwe ngokuqhubekayo, isantya sokuhamba kwevolumu ubuncinane malunga ne-10% idla ngokufuneka.Kwezinye iimeko, izinga lokuhamba kwe-volumetric ye-compressor kufuneka libe yi-zero.Ngeli xesha, umbhobho we-bypass uvame ukulungelelaniswa phakathi kokufunxa kunye nokukhupha.Xa kufuneka umthwalo opheleleyo we-zero, umbhobho we-bypass uvuliwe ukudibanisa i-suction kunye ne-exhaust..
Xa usebenzisa i-valve yesilayidi yokulungiswa kwamandla ukulungelelanisa ukuhamba kwe-volumetric ye-screw compressor, imeko efanelekileyo kukugcina umlinganiselo wangaphakathi woxinzelelo olufana nomthwalo opheleleyo ngexesha lokulungiswa kwenkqubo.Nangona kunjalo, kucacile ukuba xa ivalve yesilayidi ishukuma kwaye isantya sokuhamba kwevolumetric yecompressor iba ncinci, ubude bokusebenza obusebenzayo be-screw buba buncinci kwaye ixesha lenkqubo yoxinzelelo lwangaphakathi liba lincinci, ngoko ke ubungakanani boxinzelelo lwangaphakathi kufuneka bube buncinci. kuncitshisiwe.
Kuyilo lwangempela, ivalve yesilayidi ixhotyiswe ngomngxuma wokukhupha i-radial, ehamba nge-axially ngevalve yesilayidi.Ngale ndlela, kwelinye icala, ubude obusebenzayo be-screw machine rotor buncitshisiwe, kwaye kwelinye icala, i-radial exhaust orifice nayo iyancitshiswa, ukwenzela ukwandisa ixesha lenkqubo yoxinzelelo lwangaphakathi kunye nokwandisa umlinganiselo woxinzelelo lwangaphakathi.Xa i-radial exhaust orifice kwi-valve yesilayidi kunye ne-axial exhaust orifice kwisigqubuthelo sokugqibela senziwe kwiindidi ezahlukeneyo zoxinzelelo lwangaphakathi, umlinganiselo woxinzelelo lwangaphakathi unokugcinwa ukuba ufana nomthwalo opheleleyo ngexesha lenkqubo yohlengahlengiso ngaphakathi koluhlu oluthile. .Kuyafana.
Xa ivalve yesilayidi yohlengahlengiso lwevolumu isetyenziselwa ukuguqula kwangaxeshanye ubungakanani bendawo yokuphuma kweradial yomatshini wokujija kunye nobude becandelo elisebenzayo lerotor, ubudlelwane phakathi kokusetyenziswa kwamandla omatshini wokujija kunye nesantya sokuhamba kwevolumu ngaphakathi kokuhamba kwevolumu. uluhlu lohlengahlengiso lwe-100-50%.Amandla asetyenzisiweyo ayancipha phantse ngokulingana nokuhla kokuhamba kwevolumu, ebonisa uqoqosho olulungileyo lolawulo lwevalvu yesilayidi.Kuyafaneleka ukuba uqaphele ukuba kwinqanaba lokugqibela lokunyakaza kwe-valve yesilayidi, umlinganiselo woxinzelelo lwangaphakathi uya kuqhubeka uyancipha uze uncitshiswe kwi-1. Oku kwenza ukusetyenziswa kwamandla kunye ne-volume flow curve ngeli xesha liphambuke kwinqanaba elithile xa kuthelekiswa ne imeko efanelekileyo.Ubungakanani bokutenxa buxhomekeke kumlinganiselo woxinzelelo lwangaphandle lomatshini we-screw.Ukuba uxinzelelo lwangaphandle olugqitywe yimiqathango yokunyakaza luncinci, ukusetyenziswa kwamandla okungabikho komthwalo we-screw machine kunokuba kuphela i-20% yaloo mthwalo opheleleyo, ngelixa xa uxinzelelo lwangaphandle lukhulu kakhulu, lunokufikelela kwi-35%.Inokubonwa ukusuka apha ukuba inzuzo ebalulekileyo yokusebenzisa i-valve yesilayidi yesilayidi kukuba amandla okuqalisa omatshini we-screw amancinci kakhulu.
Xa kusetyenziswa ulwakhiwo lwevalve yesilayidi elawulayo, indawo ephezulu yevalve yesilayidi isebenza njengenxalenye ye-screw compressor cylinder.Kukho i-orifice yokukhupha kwi-valve yesilayidi, kwaye inxalenye yayo engezantsi isebenza njengesikhokelo sokunyakaza kwe-axial, ngoko ke iimfuno zokuchaneka komatshini ziphezulu kakhulu., okuya kubangela ukunyuka kweendleko zokuvelisa.Ngokukodwa kwi-screw compressors encinci, iindleko zokusetyenzwa kwevalve yesilayidi ziya kuphendula ubungakanani obukhulu.Ukongezelela, ukwenzela ukuba kuqinisekiswe ukusebenza okuthembekileyo komatshini we-screw, i-gap phakathi kwe-valve yesilayidi kunye ne-rotor ngokuqhelekileyo inkulu kune-gap phakathi komngxuma we-cylinder kunye ne-rotor.Kwiimatshini ezincinci ze-screw, lo msantsa owandisiweyo uya kuchaphazela nokusebenza kwecompressor.Ukwehla kakhulu.Ukoyisa ezi ntsilelo zingentla, kuyilo koomatshini be-screw abancinci, iivalve zesilayidi ezilula kunye nexabiso eliphantsi nazo zingasetyenziswa.
Uyilo olulula lwevalve ye-spool enemingxuma edlulayo kudonga lwesilinda oluhambelana nokumila kwe-helical ye-rotor, evumela igesi ukuba ibaleke kule mingxuma xa ingagqunywanga.Ivalve yesilayidi esetyenziswayo “yivalve ejikelezayo” enomzimba wevalve ejikelezayo.Xa ijikeleza, inokuvala okanye ivule umngxuma wokudlula odityaniswe negumbi loxinzelelo.Ekubeni i-valve yesilayidi idinga kuphela ukujikeleza ngeli xesha, ubude becompressor bunokunciphisa kakhulu.Esi sikimu soyilo sinokubonelela ngokufanelekileyo ukulungiswa kwamandla okuqhubekayo.Nangona kunjalo, ekubeni ubungakanani bomngxuma wokukhupha buhlala bungatshintshi, umlinganiselo woxinzelelo lwangaphakathi uya kuhla xa ukukhulula kuqala.Ngexesha elifanayo, ngenxa yobukho bomngxuma wokudlula kwindonga ye-cylinder, inani elithile "lomthamo wokucoca" lenziwa.Igesi ngaphakathi kweli volumu iya kuphinda iqhube ukunyanzeliswa kunye neenkqubo zokwandisa, okubangela ukunciphisa umthamo kunye nokusebenza kwe-adiabatic ye-compressor.
3. Inkqubo yokulungelelanisa i-valve yesilayidi ye-screw compressor
Ngokuhambisa i-valve yesilayidi ngakwesobunxele nasekunene, umthamo wokunyanzeliswa osebenzayo unyuswa okanye uyancipha, kwaye umthamo wokuhanjiswa kwegesi ulungelelaniswe.Xa ulayisha: i-piston ihambela ngakwesobunxele kwaye i-valve yesilayidi iya ngakwesobunxele kwaye umthamo wokuhanjiswa kwegesi uyanda;xa ukhulula: i-piston ihamba ngasekunene kwaye ivalve yesilayidi iya ngasekunene kwaye umthamo wokuhanjiswa kwegesi uyancipha.
4. Amathuba osetyenziso lwe-screw compressor slide uhlengahlengiso lwevalve yesilayidi
Ngokubanzi, i-oyile-free compressors screw ayisebenzisi isixhobo sokuhlengahlengisa umthamo ukulungisa ivalve yesilayidi.Oku kungenxa yokuba igumbi loxinzelelo lolu hlobo lwe-compressor alunayo ioli kuphela kodwa kunye nobushushu obuphezulu.Oku kwenza ukusetyenziswa kokulawula izixhobo zevalve yesilayidi kunzima ngokobuchule.
Kwi-oil-injected screw air compressors, ekubeni i-medium compressed medium ihlala ingatshintshi kwaye iimeko zokusebenza zigxininisekile, isixhobo sokulungelelanisa umthamo we-valve yesilayidi asisoloko sisetyenziswa.I-motor frequency frequency idla ngokusetyenziswa ukwenza ulwakhiwo lwecompressor lube lula kangangoko kwaye luziqhelanise neemfuno zemveliso yobuninzi..
Kuyafaneleka ukuba kuboniswe ukuba ngenxa yesixhobo sokulungelelanisa umthamo olungelelanisa i-valve yesilayidi, i-compressor inokugcina ukusebenza okuphezulu phantsi kweemeko zokusebenza ezihlengahlengisiweyo.Kwiminyaka yakutshanje, izixhobo zokuhlengahlengisa umthamo ziye zasetyenziswa kwi-oyile-free compressors screw kunye ne-oyile-injected screw air compressors.Ukulungelelanisa ukuthambekela kwevalve yesilayidi.
Kwifriji ye-screw efakwe kwi-oyile kunye ne-compressors yenkqubo, iivalve zesilayidi zohlengahlengiso zisetyenziswa ngokuqhelekileyo ukulungisa izinga lokuhamba kwe-volumetric ye-screw compressor.Nangona le ndlela yokulungelelanisa umthamo wokukhupha inzima kakhulu, inokuqhubekeka kwaye ilungelelanise ngokuqhubekayo umthamo wokukhupha, kunye nokusebenza kakuhle kuphezulu.
Ingxelo: Eli nqaku liveliswe kwi-Intanethi.Umxholo wenqaku wenzelwe iinjongo zokufunda nokunxibelelana kuphela.I-Air Compressor Network ihlala ingathathi hlangothi ngokubhekiselele kwizimvo kwinqaku.I-copyright yenqaku lelombhali wokuqala kunye neqonga.Ukuba kukho naluphi na ulwaphulo-mthetho, nceda uqhagamshelane nathi ukuze ulucime.