Fene ke mofuta oa mochini o sebelisoang ho hatella le ho tsamaisa khase. Ho ea ka pono ea phetoho ea matla, ke mofuta oa mochine o fetolang matla a mochine oa motlakase oa pele hore e be matla a khase.
Ho ea ka molao-motheo oa ketso, balateli ba ka aroloa ka:
· Turbofan – sefene se hatellang moya ka mahare a potolohang.
· Positive displacement fan - mochini o hatellang le ho tsamaisa khase ka ho fetola molumo oa khase.
E arotsoe ho latela tsela ea phallo ea moea:
· Centrifugal fan - Ka mor'a hore moea o kene ka har'a mochine oa fan axially, o hatelloa tlas'a ketso ea matla a centrifugal 'me haholo-holo o phalla ka tsela ea radial.
· Axial-flow fan - Moea o phalla ka axial ka har'a lehare le potolohang. Ka lebaka la ho sebelisana pakeng tsa lehare le khase, khase e hatelloa 'me e phalla hoo e ka bang ka tataiso ea axial holim'a cylindrical.
· phefumoloho e tsoakaneng - Khase e kena ka lehare le potolohang ho Angle ho ea ho shaft e kholo 'me e phalla hoo e ka bang ka khoune.
· Fene e phallang - khase e feta ka lehare le potolohang 'me e sebelisoa ke lehare ho eketsa khatello.
Ho hlophisoa ka khatello e phahameng kapa e tlase ea tlhahiso (e baloang ka khatello e felletseng):
Ventilator - khatello ea ho qeta ka tlase ho 112700Pa;
· blower - khatello ea ho qeta ho tloha 112700Pa ho ea 343000Pa;
· compressor - khatello ea ho qeta ka holimo ho 343000Pa;
Likarolo tse tsamaellanang tsa khatello e phahameng le e tlase ea fan ke tse latelang (maemong a tloaelehileng):
· Khatello e tlaase ea centrifugal fan: khatello e feletseng P≤1000Pa
· Khatello e mahareng centrifugal fan: khatello e felletseng P=1000 ~ 5000Pa
· Khatello e phahameng ea fan ea centrifugal: khatello e feletseng P=5000 ~ 30000Pa
· Khatello e tlase ea phallo ea axial fan: khatello e felletseng P≤500Pa
· Khatello e phahameng ea axial flow fan: khatello e feletseng P = 500 ~ 5000Pa
Mokhoa oa ho reha lebitso la Fan ea centrifugal:
Ka mohlala: 4-79NO5
Mokhoa oa mohlala le setaelele:
Ka mohlala: YF4-73NO9C
Khatello ea fan ea centrifugal e bolela khatello ea matla (e amanang le khatello ea sepakapaka), ke hore, ho eketseha ha khatello ea khase ho fan kapa phapang lipakeng tsa khatello ea khase sebakeng se kenang le se tsoang ho fan. . E na le khatello e tsitsitseng, khatello e matla le khatello e feletseng. Paramethara ea ts'ebetso e bua ka khatello e felletseng (e lekanang le phapang lipakeng tsa khatello e felletseng ea phallo ea fan le khatello e felletseng ea phallo ea fan), mme sesebelisoa sa eona se sebelisoa hangata Pa, KPa, mH2O, mmH2O, jj.
Phallo:
Bophahamo ba khase e phallang ka fene ka nako ea yuniti, e tsejoang hape e le bophahamo ba moea. Hangata e sebelisoa Q ho emela, yuniti e tloaelehileng ke; m3/s, m3/min, m3/h (metsotsoana, metsotso, lihora). (Ka linako tse ling e boetse e sebelisoa "phallo ea boima" ke hore, boima ba khase e phallang ka fan ka nako ea yuniti, lekhetlong lena ho hlokahala ho nahana ka sekhahla sa khase ea seketsoana sa fan, le sebopeho sa khase, khatello ea sepakapaka ea sebakeng seo, mocheso oa khase, khatello ea ho kena. e na le tšusumetso e haufi, e hloka ho fetoloa ho fumana "phallo ea khase" e tloaelehileng.
Lebelo la ho potoloha:
Lebelo la ho potoloha ha fan. Hangata e hlalosoa ka n, 'me yuniti ea eona ke r/min(r e bontša lebelo, min e bontša motsotso).
Matla:
Matla a hlokahalang ho khanna fene. Hangata e hlalosoa e le N, 'me yuniti ea eona ke Kw.
Khoutu e tloaelehileng ea tšebeliso ea fan
Mokhoa oa phetisetso le katleho ea mochini:
Mekhahlelo e tloaelehileng ea Fan, litlhoko tsa tekheniki
Fene e akaretsang ea moea: khatello e felletseng P=… .Pa, sephethephethe Q=… m3/h, bophahamo (khatello ea sepakapaka ea sebakeng seo), mokhoa oa phetisetso, moea o fetisang (moea o ke ke oa ngoloa), potoloho ea impeller, ho kena le ho tsoa Angle (ho tloha motor end), ho sebetsa mocheso T=… ° C (mocheso oa kamore e ke ke ea ngoloa), mohlala oa koloi…… .. ema.
Batšehetsi ba mocheso o phahameng le libapali tse ling tse khethehileng: khatello e felletseng P=… Pa, flow Q=… m3/h, boima ba khase bo tsoang kantle ho naha Kg/m3, mokhoa oa phetisetso, mokhoa oa ho fetisa (moea o kanna oa se ke oa ngoloa), ho potoloha ha moea, ho kena le ho tsoa (ho tloha pheletsong ea makoloi), mocheso oa ho sebetsa T=….. ℃, mocheso o phahameng hang hang T=… ° C, boima ba khase bo tsoang kantle ho naha □Kg/m3, khatello ea sepakapaka ea lehae (kapa boemo ba leoatle la lehae), lerōle, lemati le laolang fene, mohlala oa koloi, motsoako oa katoloso ea ho kenya le ho romela kantle ho naha, setsi ka kakaretso, hydraulic coupling (kapa frequency converter, liquid resistance starter), seteishene sa oli se tšesaane, sesebelisoa sa ho fetola butle, actuator, khabinete ea ho qala, khabinete ea taolo… .. ema.
Litlhokomelo tsa lebelo le phahameng la fan (B, D, C drive)
· Mofuta oa 4-79: 2900r / min ≤NO.5.5; 1450 r/min ≤NO.10; 960 r/min ≤NO.17;
· 4-73, 4-68 mofuta: 2900r / min ≤NO.6.5; 1450 r/min ≤15; 960 r/min ≤NO.20;
Hangata fan e ne e sebelisa mokhoa oa lipalo (o nolofalitsoeng, o lekanyelitsoeng, tšebeliso e akaretsang)
Bophahamo bo fetoleloa ho khatello ea sepakapaka ea sebakeng seo
(760mmHg)-(boemo ba lewatle ÷12.75)= kgatello ya sepakapaka ya lehae (mmHg)
Tlhokomeliso: Bophahamo bo ka tlase ho 300m E kanna ea se lokisoe.
·1mmH2O=9.8073Pa;
·1mmHg=13.5951 mmH2O;
·760 mmHg=10332.3117 mmH2O
· Phallo ea fan 0 ~ 1000m bophahamong ba leoatle e ke ke ea lokisoa;
· 2% sekhahla sa phallo sebakeng sa 1000 ~ 1500M bophahamo;
· 3% sekhahla sa phallo sebakeng se phahameng sa 1500 ~ 2500M;
· 5% ea ho qhala boemong ba leoatle ka holimo ho 2500M.
Ns:
Nako ea poso: Aug-17-2024