Ke RPM efe le nako ea bophelo bohle eo lesale la IP65 le thellang le ka le fihlelang?
Masale a bataletseng a nang le litekanyetso tsa mohaho oa IP65 a sebetsa ho pholletsa le lebelo le fapaneng ho latela thepa ea borashe, sebopeho sa selikalikoe sa mehala, le lipehelo tsa taolo ea mocheso tse hahelletsoeng ka har'a kopano ea matlo. Likarolo tse tloaelehileng tsa liindasteri li sebetsa ho tloha ho hoo e ka bang 10 RPM ho isa ho 300-500 RPM kamehla, ka mefuta e khethehileng ea lebelo le holimo e fihlang ho 1000-1500 RPM moo ho qobelloang ho pholisa moea kapa liphaseje tsa mokelikeli tse kentsoeng mohahong oa matlo. Lebitso la IP65 ho IEC 60529 le bolela ts'ireletso e felletseng khahlano le lerole le kenang (tekanyo ea "6") le ts'ireletso khahlano le lijete tsa metsi tse hlahisoang ho tsoa molomong oa 6.3mm ka lilithara tse 12.5 / motsotso ho tloha ntlheng efe kapa efe (tekanyo ea "5").
Meeli ea lebelo le lithibelo tsa mocheso
Taba ke ena - e butsoeng-ea foreimi e sephara e sephara ea borashe e ts'oanang le lisebelisuoa tsa ring e ka sebetsa ka ts'epo ho 800-1200 RPM, empa moetso o ts'oanang o kentsoeng ntlong ea IP65 e nang le li-elastomeric seals (hangata rabara ea nitrile bakeng sa -}500℃resistance to fluoela 30-40% ea phokotso ea lebelo le phahameng ka ho fetisisa. Mocheso o hlahisoang ka har'a borashe-sehokelo sa selikalikoe - motsoako oa mocheso o thibelang oa I²R le khohlano ea mochini, hoo e ka bang 0.8-1.2 watts per ampere per brush at rated current - e tlameha ho kena ka har'a ntlo e tiisitsoeng ho e-na le ho qhalana ka ho toba moeeng o phelang. Lesale la 10-circuit slip e nkang li-ampere tse 5 ka potoloho ho 400 RPM e hlahisa kakaretso ea li-watts tse 40-60. Ntle le ho teba ho lekaneng ha mocheso ka har'a flange e ntseng e hola kapa mapheoana a pholileng a kantle, mocheso oa mateano libakeng tsa ho kopana le borashe o ka fihla ho 90-120 degree, e potlakisang oxidation ea carbon brush mme e baka ho phatsima pele ho nako ea sebaka se kopaneng.
Ke bone likarolo tse fuoeng 500 RPM tse sa khoneng ho boloka 300 RPM hobane moqapi oa mocheso o ne o le ka thōko - moetsi o sebelisitse ntlo e tšesaane ea aluminiamo ntle le mapheo a pholileng ho boloka boima ba 'mele,' me kopano eohle e ne e tla chesa ka mokhoa o sa phutholohang ka mor'a metsotso e 20 ea ts'ebetso. Moreki o ne a ntse a letsetsa ka mehele e "senyehileng" ho fihlela qetellong re lekanya mocheso oa ntlo mme re fumana hore e ntse e otla 75℃ambient ho potoloha sebaka sa tiiso. Ha ho makatse ha litiiso li ile tsa hlōleha ka mor'a likhoeli tse 6.
Bophelo ba tšebeletso ea borashe
Carbon-Marashe a graphite a roaloa hoo e ka bang 0.5-1.5 millimeters ka lihora tse 1000 tsa ts'ebetso ho latela boima ba hona joale; borashe e qalang ka bolelele ba 8mm e fihla sebakeng sa eona (hangata ha e apesoa ho 3-4mm e setseng bolelele ho boloka khatello e lekaneng ea selemo) ka mor'a lihora tse 2500-4000 likopanong tse entsoeng hantle. Librashe tsa tšepe tsa graphite tse nang le 40-60% ea koporo kapa phofo ea silevera e kopantsoeng le graphite binder e bonts'a khanyetso e tlase ea ho ikopanya (0.005-0.015 ohms ka borashe ha e bapisoa le 0.020-0.040 ohms bakeng sa carbon-graphite e hloekileng) 'me e khona ho jara likhahla tse phahameng tsa hajoale (ho fihla ho 50 A/cm² ha e bapisoa le litekanyetso tsa A/cm²) 50-80% ka lebaka la likaroloana tse thata tsa tšepe tse senyang borashe le selikalikoe sa ho ikopanya, se hlahisang bophelo ba ts'ebeletso ea lihora tse 1500-3000 pele ho hlokahala hore ho nkeloe sebaka.
Re lokela ho hlokomela hore "lihora tsa ho sebetsa" li bolela nako ea ho potoloha, ha e sebelisoe-ka nako. Ke bone lits'oants'o tse ngata tsa tlhokomelo moo batho ba neng ba latela likhoeli tsa almanaka ho fapana le lihora tsa tachometer, e leng se ileng sa lebisa ho nkeng sebaka pele ho nako (ho senya chelete ka borashe bo neng bo saletsoe ke 40% ea bophelo) kapa liphoso tse neng li sa lebelloa (borashe bo aparoang hobane mochini o ne o sebetsa lichifi tse peli ho fapana le e le 'ngoe).
Ikopanye le lisebelisoa tsa ring le ho senyeha
Nako e telele ea nako ea ho kopana e feta bophelo ba borashe litsing tse ngata tse kentsoeng, ka mehele e entsoeng ka khauta-(hangata 1-3 microns tsa khauta e thata holim'a poleiti ea nickel barriers holim'a substrate ea koporo) e tšoarellang lihora tse 10,000{9}}lihora tse 20,000 pele lesela la khauta le fetela ho fihla karolong e ka tlase ea nick; bahlahisi ba bang ba hlakisa "gold flash" ea li-micron tse 0.3-0.5 feela ho fokotsa litšenyehelo, empa mehele ena e hlaha ka-ka mor'a lihora tse 3000-5000 ha e jara thepa e itekanetseng. Mehele ea silevera kapa silevera-graphite, eo ka linako tse ling e sebelisoang lits'ebetsong tsa morao-rao (50-100 amperes ka potoloho), e bonts'a khanyetso e tlase ea ho ikopanya ho feta khauta (0.001-0.003 ohms ka potoloho khahlano le 0.003-0.006 ohms bakeng sa khauta) empa e na le bothata ba ho silafala libakeng tse nang le metsoako ea sebabole, e ka eketsang nako e telele ea 2% kapa mongobo o phahameng ho feta 0% ho feta mathata a nakoana a ho kopana; lera le senyehileng le boetse le sebetsa joalo ka mokhoa o senyang, o ntseng o eketsa litekanyetso tsa ho roala borashe. Mehele e se nang letho ea koporo kapa ea koporo, e fumanoang feela ka li-unit tse theko e tlaase kapa moo litlhoko tsa morao-rao li fetang 100 amperes ka potoloho, li apara ka potlako (lihora tse 5000-8000 boholo) 'me li na le oxidize kamehla.
Ho ne ho e-na le mokhoa ona oa ho paka ka har'a 2017 - moreki o ne a tsitlallela ho roala masale a koporo sebakeng sa khauta{1}}hobane ba ne ba sutumelletsa li-amps tse 80 ka potoloho e 'ngoe 'me ba ne ba sa batle ho lefella khauta e boima. E sebelitse hantle ka lihora tse ka bang 4000, 'me hang-hang ba qala ho tlohela sekolo ka nako e telele{{5}hajoale. Ho ile ha fumaneha hore sebopeho sa koporo ea oxide se ne se theha lesela la semiconducting le neng le tla senyeha ka tlas'a mojaro, arc, le thehe oxide e ngata, le phete. E qetelletse e ba jella chelete e ngata nakong ea ho theoha ho feta{8}} liring tsa khauta tse neng li tla bitsa qalong. Empa ua tseba hore na mafapha a rekang a sebetsa joang - a bona palo e tlase ho khotheishene, 'me ke eona taba ea bohlokoa.
Seal degradation - mokhoa o patiloeng oa ho hloleha
Moaho o tiisitsoeng o hlokehang bakeng sa lintlha tsa IP65 o hlahisa mathata a sieo-meetsong e bulehileng. Litiiso tsa Elastomeric pakeng tsa likarolo tse bilikang le tse emeng li tlameha ho boloka khatello ha li ntse li fana ka katoloso ea mocheso oa lisebelisoa tse sa tšoaneng (mahaho a aluminium a nang le litšepe tsa tšepe, kapa li-insulators tsa polasetiki tse nang le mehele ea tšepe), 'me litiiso tsena li senyeha ha nako e ntse e ea ho tloha libaesekeleng tse futhumatsang, ho pepeseha ha ozone (haholo-holo ka lienjene tsa motlakase tse fehlang motlakase le ho ferekanngoa ha roro). Litiiso tsa rabara tsa Nitrile li qala ho lahleheloa ke elasticity ka mor'a lihora tse 15,000-20,000 tsa ts'ebetso kapa lilemo tse 3-5 tsa nako ea khalendara (ho sa tsotellehe hore na ke efe e tlang pele) ka lebaka la ho tšela liketane tsa polymer, ha litiiso tsa fluoroelastomer (Viton kapa tse lekanang) li boloka thepa nako e telele empa li bitsa makhetlo a 3-4 ho feta.
Ha litiiso li hloleha, boemo ba IP65 bo theoha butle-butle ho e-na le hore mouoane oa mongobo o senyehe pele - o kena pele (ho phahamisa mongobo o ka hare le ho potlakisa oxidation ea brush), 'me qetellong ke metsi a metsi kapa lerole le bakang ho senyeha ha tshebetso ka potlako.
Ts'ebetso ea DC khahlano le AC
DC ea hona joale ka li-circuits tsa ring e etsa hore e senyehe ho feta AC ka nako e lekanang le eona ka lebaka la ho falla ha electrochemical ka har'a borashe-interface ea ring - ha e le hantle e lieha ho senya galvanic corrosion process moo lisebelisoa li tlohang ho anode ho ea ho cathode ka lihora tse likete tsa ts'ebetso, ho etsa hore ho be le likoti holim'a sebaka se seng le ho haha ho se seng. Ts'ebetso ena e fokotsa bophelo ba borashe ka 40-60% ha e bapisoa le ts'ebetso ea AC, bahlahisi ba bang ba khothaletsa ho khutlisa borashe ka lihora tse 1200-2000 bakeng sa li-circuits tsa DC khahlano le lihora tse 3000-4000 bakeng sa AC. Ho theoha ha motlakase ho pholletsa le li-brashi-ring contact para ka tloaelo ho lekanya li-volts tse 0.2-0.5 ka nako e lekantsoeng ha e ncha, e nyolohela ho 0.8-1.2 volts ha borushe bo ntse bo roaloa le sebaka sa ho kopana se fokotseha; phokotso ena ea motlakase e emela ho felloa ke matla (I × V watts ka lebitso) e tlatsetsang ho futhumatsang 'me e tlameha ho kenngoa lipalong tsa mocheso, haholo-holo lits'ebetsong tsa morao-rao moo potoloho ea 10-ampere e nang le lerotholi la 0.5V e qhala li-watts tse 5 ka sete ea borashe.
Hopola, tse ling tsa lingoliloeng tsa khale li re ts'ebetso ea DC e fokotsa bophelo ka 20-30% feela, empa lithuto tseo li entsoe ka likhakanyo tse tlase haholo tsa hajoale tsa bo-1970 le bo-1980. Litsi tsa sejoale-joale tsa indasteri tse sututsang li-amps tse 10-20 ka borashe bo bong le bo bong li bona ho senyeha ho hoholo hoa DC.
Lintlha tsa tikoloho ha ho motho ea buang ka tsona
Ho sebetsa ka likhato tse 50 sebakeng sa mocheso oa tšupiso ea likhato tse 25 ho fokotsa bophelo ba borashe ka hoo e ka bang 25-35% ka lebaka la oxidation e potlakileng le ho nolofatsa mocheso oa lisebelisoa tsa brashi, ha ka nako e ts'oanang li fokotsa boholo bo lumelletsoeng RPM ka 15-20% hobane moeli oa mocheso ho ea ho ho hloleha ha mocheso o fokotseha ka tekanyo. Libaka tse nang le mongobo o phahameng (ka holimo ho 70% ea mongobo o lekanyelitsoeng) li etsa hore borashe ba carbon-graphite bo monye mongobo, ho eketsa khanyetso ea ho kopana ka 15-25% le ho fetola coefficient ea khohlano ho sebopeho sa ho thella; phello ena e ka khutlisetsoa morao ha mongobo o theoha, empa ho palama baesekele pakeng tsa metsi le maemo a omileng ho potlakisa ho apara ha mechine.
Vibration ke 'molai e mong ea sa fumaneng tlhokomelo e lekaneng. Brush bounce (tahlehelo ea nakoana ea ho kopana) e etsahala ha ho potlakisa ho feta hoo e ka bang 3-5G ho maqhubu a 50-200 Hz; ketsahalo e 'ngoe le e 'ngoe ea bounce e etsa micro-arc e senyang thepa ho tloha ka bobeli borashe le bokaholimo ba selikalikoe, e fokotsang bophelo ka 20-40% lits'ebetsong tse sisinyehang haholo ha ho bapisoa le lits'ebetso tse sebetsang hantle holim'a metheo e thata.
Ebile moreki ea kenyang li-slip ringi tsa IP65 mochining oa ho paka o ts'oarellang - ka nako e ngata ea ho qala-mekhahlelo ea ho emisa ka litheko tse holimo. Bophelo ba borashe bo lekantsoeng e ne e le lihora tse 3000 empa ba ne ba bona liphoso ka lihora tse 800-1000 khafetsa. Accelerometers e bonts'itse litlhoro tsa 8-10G ho 120 Hz, ho feta seo borashe bo neng bo ka se sebetsa ntle le ho tlokoma. Tharollo e ne e kenyelletsa ho kenyelletsa thaba e lumellanang ea ho itšehla thajana, e ileng ea hlahisa mathata a eona ka ho tsamaisana le shaft, empa bonyane borashe bo qalile ho nka lihora tse 2200-2500.
Tlhokomelo ea 'nete khahlano le lintlha tsa database
Ho hlahlojoa khafetsa ka lihora tse ling le tse ling tse 1500-2000 tsa ts'ebetso ho lumella ho lemoha mekhoa e sa tloaelehang ea ho apara, ho silafatsoa, kapa ho hlahisa mathata a motlakase pele a baka ho hloleha ho feletseng, ha likarolo tsa ts'ebetso li etsa hore borashe bo senyehe hangata bo baka tšenyo ea liringcheng tse tsoang ho arcing kapa ho tsoa litšepe tse tšolotsoeng ka borashe bo tsofetseng bo kentsoeng bokaholimong. Basebelisi ba bang ba beha leihlo hore na ke mang ea sa sebetseng hantle ka ho sebelisa li-circuits tse tsamaisanang le morero ona, ka li-alarm thresholds tse behiloeng ho 50-100% e eketseha ho feta litekanyetso tsa mantlha ho qala tlhokomelo. The Parker-Hannifin technical bulletin TB-1147 (e ntlafalitsoeng ka 2018) e khothaletsa tlhahlobo ea motlakase ho kenyeletsoa le ho hana ho kenella lipakeng tsa lisekethe le fatše (e lokela ho feta 100 megohms ho 500VDC), circuit-to-circuit resistance (e lokela ho tsamaisana le li-circuits tse haufi ka har'a 20%), le ho theoha ha motlakase o le mong ka tlase ho 20%)
Bona, bothata ke hore litsi tse ngata ha li na motho ea koetliselitsoeng ho etsa liteko tsena ka nepo. Ba ka 'na ba hlahloba ho hanyetsa ha insulation hobane ho bonolo - sekotwana ho megger, tobetsa konopo, fumana nomoro. Empa ho lekanya mabitso ho theoha tlas'a mojaro oa 'nete? Seo se hloka hore ho kenngoe lithapo tsa motlakase le tsa motlakase ho li-slip ring circuits ha e ntse e sebetsa, e leng se bolelang hore ho na le liteko tse tloahelehileng le motho ea utloisisang litekanyo tse 'ne{3}} Joale se etsahalang ke hore ba tsamaisa selikalikoe ho fihlela ntho e emisa ho sebetsa, ebe ba letsetsa ts'ebeletso ea ts'ohanyetso, ba fumana mehele e senyehileng ho tsoa lithakong tsa borashe, 'me ba qetella ba nkela kopano eohle sebaka ka $8000 ho fapana le ho khutlisa borashe ka $300.
Likopo tse hlokang ts'ebetso e tsitsitseng ka holimo ho 500 RPM kapa bophelo ba ts'ebeletso bo fetang lihora tse 15,000 ntle le ho khutlisa borashe bo lokela ho nahana ka mekhoa e meng ho fapana le mehele e tloaelehileng ea khabone-mokhoa oa ho roala borashe - li-transformer tse se nang mabitso kapa li-joints tsa rotary optical li felisa ho senyeha ka botlalo empa li beha mefokolo ho mats'oao a bandwidth kapa matla a motlakase ({5}lithibelo tsa mercutory lumella ts'ebeliso ea tsona) li fana ka bophelo bo sa lekanyetsoang ba ho potoloha empa li hlahise mathata a chefo 'me hangata li bitsa 5-10x ho feta meralo e tloaelehileng.