Mokhoa oa ho hlokomela phetoho e se nang mohato oa moea ho screw compressor
1. Litšobotsi tsa screw compressor
Li-screw compressors li entsoe ka li-screw tse bapileng, tse intermeshing tse tšehali le tsa banna.Li sebelisoa haholo litsamaisong tse mahareng le tse kholo tsa sehatsetsing kapa ho sebetsa li-compressor tsa khase ho hloekisa le limela tsa lik'hemik'hale.Screw compression e arotsoe ka mefuta e 'meli: sekoti se le seng le sekoti sa mafahla.Hangata, screw compressor e bolela "twin screw compressor".Li-screw compressors li na le litšobotsi tse latelang:
(1) The screw compressor e na le sebopeho se bonolo le palo e nyenyane ea likarolo.Ha ho na likarolo tsa ho roala tse kang li-valve, mehele ea piston, li-rotor, li-bearings, joalo-joalo, 'me matla a eona le khanyetso ea ho roala li batla li le holimo.
(2) The screw compressor e na le litšoaneleho tsa phetisetso ea khase e qobelloang, ke hore, molumo oa ho tima ha o amehe ke khatello ea mokhathala, ha ho ts'ebetso e etsahalang ha molumo oa ho tsoa o le nyane, mme o ntse o ka boloka khatello ka mefuta e mengata. ya maemo a tshebetso.Bokhoni bo phahameng.
(3) The screw compressor ha e amehe haholo hamore ea metsi mme e ka pholile ka ente ea oli.Ka hona, tlas'a tekanyo e tšoanang ea khatello, mocheso oa ho ntša mocheso o tlase haholo ho feta oa mofuta oa piston, kahoo tekanyo ea khatello e le 'ngoe e phahame.
(4) Tokiso ea li-valve tsa li-slide e amoheloa ho hlokomela phetoho e se nang mohato oa matla.
2. Molao-motheo oa phetoho ea li-valve tsa li-slide tsa screw compressor
Sephahla sa li-slide se sebelisetsoa ho laola matla a se nang mohato.Nakong ea ts'ebetso e tloaelehileng, karolo ena ha e laeloe.Valve ea li-slide e laoloa ke phanele ea taolo e nyane ka khatello ea oli, qetellong e fetola matla a ho sebetsa a compressor.
The capacity adjustment slide valve ke karolo ea sebopeho e sebelisetsoang ho lokisa phallo ea molumo ka har'a compressor ea screw.Le hoja ho na le mekhoa e mengata ea ho lokisa phallo ea molumo oa screw compressor, mokhoa oa ho lokisa o sebelisa valve ea li-slide o sebelisitsoe haholo, haholo-holo ha ho etsoa ente.Sehatsetsi sa sehatsetsi sa oli le li-compressor tsa tšebetso li tumme haholo.Joalo ka ha ho bonts'itsoe ho Setšoantšo sa 1, mokhoa ona oa tokiso ke oa ho kenya valve ea "slide" ea "adjustment slide valve" holim'a 'mele oa "screw compressor" ebe o fetoha karolo ea 'mele oa compressor.E fumaneha mateanong a li-circles tse peli tse ka hare ka lehlakoreng la 'mele o nang le khatello e phahameng' me e ka ea pele le morao ka tsela e bapileng le cylinder axis.
Molao-motheo oa valve ea slide ho lokisa sekhahla sa phallo ea volumetric ea screw compressor e ipapisitse le litšobotsi tsa ts'ebetso ea "screw compressor".Ka "screw compressor" ha rotor e ntse e potoloha, butle-butle khatello ea khase e hatelitsoeng e eketseha ho latela axis ea rotor.Mabapi le boemo ba sebaka, butle-butle e tsamaea ho tloha qetellong ea ho huloa ea compressor ho ea qetellong ea ho tsoa.Ka mor'a hore lehlakore le phahameng la 'mele le bulehe, ha li-rotor tse peli li qala ho senya le ho leka ho eketsa khatello ea khase, khase e' ngoe e tla feta ka ho bula.Ho hlakile hore palo ea khase e fetisitsoeng e amana le bolelele ba ho bula.Ha mohala oa ho kopana o fetela qetellong ea ho bula, khase e setseng e koetsoe ka ho feletseng, 'me mokhoa oa ho hatella ka hare o qala hona joale.Mosebetsi o entsoeng ke screw compressor holim'a khase ea bypass e tsoang ho bula e sebelisoa feela ho e ntša.Ka hona, tšebeliso ea matla ea compressor ke kakaretso ea mosebetsi o entsoeng ho hatella khase e felileng le mosebetsi oa likhohlano.Ka hona, ha valve ea slide e fetola matla e sebelisoa ho fetola sekhahla sa phallo ea volumetric ea screw compressor, compressor e ka boloka ts'ebetso e phahameng tlas'a boemo ba tokiso.
Ho li-compressor tsa 'nete, hangata ha se lesoba ka har'a casing, empa ke sebopeho sa porous.The valve slide e tsamaea ka groove tlas'a rotor 'me e lumella phetoho e tsoelang pele ea boholo ba ho bula.Khase e ntšitsoeng sebakeng se bulehileng e tla khutlela boema-kepe ba ho huloa ba compressor.Kaha konpressor ha e le hantle ha e sebetse karolong ena ea khase, mocheso oa eona ha o nyolohe, kahoo ha ho hlokahale hore e pholisoe pele e fihla khase e tloaelehileng boema-kepeng ba ho hula..
Sephahla sa li-slide se ka tsamaea ka tsela leha e le efe ho ea ka litlhoko tsa tsamaiso ea taolo.Ho na le mekhoa e mengata ea ho e khanna.Mokhoa o tloaelehileng ka ho fetisisa ke ho sebelisa hydraulic cylinder, 'me tsamaiso ea oli ea screw compressor ka boeona e fana ka khatello ea oli e hlokahalang.Mechineng e seng mekae, valve ea li-slide e tsamaisoa ke enjene e fokolitsoeng.
Ka khopolo, spool e lokela ho ba bolelele bo lekanang le rotor.Ka mokhoa o ts'oanang, sebaka se hlokahalang bakeng sa valve ea slide ho tloha ho mojaro o feletseng ho ea ho mojaro o se nang letho o hloka ho tšoana le rotor, 'me cylinder ea hydraulic le eona e lokela ho ba le bolelele bo lekanang.Leha ho le joalo, tloaelo e pakile hore le haeba bolelele ba valve ea li-slide bo le khuts'oane hanyane, litšobotsi tse ntle tsa taolo li ntse li ka finyelloa.Lebaka ke hobane ha ho buloa ha "bypass" ka lekhetlo la pele haufi le sefahleho sa ho hula, sebaka sa eona se nyane haholo, khatello ea khase e nyane haholo ka nako ena, 'me nako e nkang hore meno a rotor a fiele ka lesoba le ona. e khuts'oane haholo, kahoo ho tla ba le palo e nyane feela ea Khase e 'ngoe e ntšoa.Ka hona, bolelele ba sebele ba valve ea slide bo ka fokotsoa hoo e ka bang 70% ea bolelele ba karolo ea ho sebetsa ea rotor, 'me karolo e setseng e etsoa e tsitsitseng, kahoo e fokotsa boholo ba kakaretso ea compressor.
Litšobotsi tsa valve ea slide ea ho fetola matla li tla fapana le bophara ba rotor.Lebaka ke hore sebaka sa boema-kepe sa bypass se bakoang ke ho sisinyeha ha valve ea slide se lekana le lisekoere tsa bophara ba rotor, athe molumo oa khase ka kamoreng ea khatello o lekana le bophara ba rotor.E lekana le khubu ea.Ke habohlokoa ho hlokomela hore ha compressor e hatella khase, e boetse e eketsa khatello ea oli e kentsoeng, 'me qetellong e e ntša hammoho le khase.E le hore oli e tsoe ka ho tsoelang pele, molumo o itseng oa ho ntša metsi o tlameha ho bolokoa.Ho seng joalo, tlas'a maemo a se nang mojaro ka ho feletseng, oli e tla bokella ka kamoreng ea khatello, e leng se etsang hore moea oa compressor o se ke oa khona ho tsoela pele ho sebetsa.E le hore oli e tsoele pele ho ntšoa, tekanyo ea phallo ea molumo bonyane e ka bang 10% e hlokahala.Maemong a mang, sekhahla sa phallo ea volumetric ea compressor e tlameha ho ba zero.Ka nako ena, pipe ea bypass hangata e hlophisoa pakeng tsa ho hula le ho qeta.Ha ho hlokeha mojaro o felletseng oa zero, phala ea bypass e buloa ho hokahanya ho hula le ho tsoa..
Ha u sebelisa valve ea slide ea ho fetola matla ho fetola phallo ea volumetric ea screw compressor, boemo bo nepahetseng ke ho boloka tekanyo ea khatello ea ka hare e tšoana le ea mojaro o feletseng nakong ea ts'ebetso ea tokiso.Leha ho le joalo, ho totobetse hore ha valve ea slide e tsamaea 'me tekanyo ea phallo ea volumetric ea compressor e fetoha e nyenyane, bolelele bo sebetsang ba sekoti bo fetoha bo fokolang' me nako ea ts'ebetso ea ho hatella ka hare e fetoha e nyenyane, kahoo tekanyo ea khatello ea ka hare e tlameha ho ba e fokolang. fokotsehile.
Moqaping oa 'nete, valve ea li-slide e na le lesoba la ho tima la radial, le tsamaeang ka axially le valve ea slide.Ka tsela ena, ka lehlakoreng le leng, bolelele bo sebetsang ba "screw machine rotor" bo fokotsehile, 'me ka lehlakoreng le leng, sepakapaka sa radial exhaust se boetse se fokotsehile, e le ho lelefatsa nako ea ts'ebetso ea ho hatella ka hare le ho eketsa tekanyo ea khatello ea ka hare.Ha "radial exhaust orifice" holim'a valve ea slide le "axial exhaust orifice" holim'a sekoahelo sa ho qetela li entsoe ka mekhahlelo e fapaneng ea khatello ea ka hare, tekanyo ea khatello ea ka hare e ka bolokoa e tšoana le ea mojaro o feletseng nakong ea ts'ebetso ea phetoho ka har'a mefuta e itseng. .E tšoanang.
Ha valve ea slide ea phetoho ea molumo e sebelisoa ho fetola ka nako e le 'ngoe boholo ba "radial exhaust orifice" ea mochini oa screw le bolelele ba karolo e sebetsang ea rotor, kamano pakeng tsa tšebeliso ea matla ea mochini oa screw le sekhahla sa phallo ea molumo e ka har'a phallo ea molumo. phetoho e fapaneng ea 100-50%.Matla a sebelisoang a fokotseha hoo e batlang e le ho fokotseha ha phallo ea volumetric, e leng se bontšang moruo o motle oa taolo ea li-valve tsa li-slide.Ke habohlokoa ho hlokomela hore nakong ea morao-rao ea motsamao oa li-valve tsa slide, tekanyo ea khatello ea ka hare e tla tsoela pele ho fokotseha ho fihlela e fokotseha ho 1. Sena se etsa hore tšebeliso ea matla le phallo ea phallo ea molumo ka nako ena e khelohe ho isa tekanyong e itseng ha e bapisoa le boemo bo loketseng.Boholo ba ho kheloha bo itšetlehile ka tekanyo ea khatello ea kantle ea mochine oa screw.Haeba khatello ea kantle e khethiloeng ke maemo a motsamao e batla e le nyane, tšebeliso ea matla a se nang moroalo oa mochini oa screw e kanna ea ba 20% feela ka mojaro o felletseng, athe khatello ea kantle e batla e le kholo, e ka fihla ho 35%.Ho ka bonoa ho tloha mona hore molemo o moholo oa ho sebelisa valve ea slide ea bokhoni ke hore matla a qalang a mochine oa screw a nyane haholo.
Ha ho sebelisoa sebopeho sa li-valve tsa li-slide, karolo e ka holimo ea valve ea li-slide e sebetsa e le karolo ea "screw compressor cylinder".Ho na le orifice ea ho qeta holim'a valve ea slide, 'me karolo ea eona e ka tlaase e boetse e sebetsa e le tataiso bakeng sa motsamao oa axial, kahoo litlhoko tsa ho nepahala ha machining li phahame haholo., e leng se tla lebisa ho eketseha ha litšenyehelo tsa tlhahiso.Haholo-holo ka li-screw compressors tse nyane, litšenyehelo tsa ho sebetsa tsa valve ea slide li tla ikarabella bakeng sa karolo e kholo.Ho phaella moo, e le ho netefatsa ts'ebetso e ka tšeptjoang ea mochine oa screw, lekhalo pakeng tsa valve ea slide le rotor hangata le leholo ho feta lekhalo pakeng tsa lesoba la cylinder le rotor.Mechineng e menyenyane ea li-screw, lekhalo lena le ntseng le eketseha le tla ama ts'ebetso ea compressor.Ho fokotseha ho hoholo.E le ho hlōla mefokolo e ka holimo, moralong oa mechine e nyenyane ea screw, li-valve tse 'maloa tse bonolo le tse theko e tlaase tse laolang li-slide li ka boela tsa sebelisoa.
Moralo o bonolo oa spool valve o nang le masoba leboteng la silinda e lumellanang le sebopeho sa helical sa rotor, e lumellang khase ho tsoa masobeng ana ha a sa koaheloa.Sephahla sa li-slide se sebelisitsoeng ke "valve ea rotary" e nang le 'mele oa spiral valve.Ha e potoloha, e ka koahela kapa ea bula lesoba la bypass le amanang le kamore ea khatello.Kaha valve ea slide e hloka feela ho potoloha ka nako ena, bolelele ba kakaretso ba compressor bo ka fokotseha haholo.Morero ona oa moralo o ka fana ka phetoho e tsoelang pele ea bokhoni.Leha ho le joalo, kaha boholo ba lesoba la ho ntša metsi bo lula bo sa fetohe, tekanyo ea khatello ea ka hare e tla theoha ha ho qala ho laolla.Ka nako e ts'oanang, ka lebaka la ho ba teng ha lesoba la bypass leboteng la cylinder, palo e itseng ea "clearance volume" e thehoa.Khase e ka har'a molumo ona e tla lula e e-na le mekhoa ea khatello le ho atolosa, e leng se fellang ka ho fokotseha ha volumetric le adiabatic katleho ea compressor.
3. Mokhoa oa ho lokisa valve ea slide ea screw compressor
Ka ho tsamaisa valve ea slide ka ho le letšehali le ka ho le letona, molumo o sebetsang oa ho hatella o eketseha kapa o fokotseha, 'me molumo oa ho fana ka khase o fetoloa.Ha o laela: piston e fallela ka ho le letšehali 'me valve ea slide e fallela ka ho le letšehali' me molumo oa ho fana ka khase o eketseha;ha o laolla: piston e fallela ka ho le letona 'me valve ea slide e ea ka ho le letona' me molumo oa ho fana ka khase o fokotseha.
4. Litebello tsa ts'ebeliso ea phetoho ea li-valve tsa screw compressor slide
Ka kakaretso, li-screw compressors tse se nang oli ha li sebelise sesebelisoa sa ho fetola matla ho lokisa valve ea li-slide.Lebaka ke hobane kamore ea khatello ea mofuta ona oa compressor ha e na oli feela empa hape e na le mocheso o phahameng.Sena se etsa hore ts'ebeliso ea lisebelisoa tsa ho laola li-valve tsa li-slide e be thata ka botekgeniki.
Ka li-screw air compressors tse kentsoeng ka oli, kaha mochini o hatelitsoeng o lula o sa fetohe mme maemo a ts'ebetso a tsitsitse, sesebelisoa sa ho fetola bokhoni ba valve ea slide hangata ha se sebelisoe.Enjene ea maqhubu a feto-fetohang hangata e sebelisoa ho etsa hore sebopeho sa compressor se be bonolo ka hohle kamoo ho ka khonehang mme se ikamahanye le litlhoko tsa tlhahiso ea bongata..
Ke habohlokoa ho bontša hore ka lebaka la sesebelisoa sa ho fetola matla se fetolang valve ea li-slide, compressor e ka boloka ts'ebetso e phahameng tlas'a maemo a sebetsang a fetotsoeng.Lilemong tsa morao tjena, lisebelisoa tsa tokiso ea matla le tsona li 'nile tsa sebelisoa ho li-screw compressors tse se nang oli le li-screw air compressors tse kentsoeng ka oli.E fetola tloaelo ea valve ea li-slide.
Sehatsetsing sa sehatsetsi se kentsoeng ka oli le li-compressor tsa tšebetso, li-valve tsa li-slide tsa tokiso ea matla li sebelisoa hangata ho lokisa sekhahla sa phallo ea volumetric ea screw compressor.Le hoja mokhoa ona oa ho fetola molumo oa ho ntša metsi o batla o rarahane, o ka tsoela pele ho fetola molumo oa ho tima, 'me katleho le eona e phahame.
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