Mokhoa oa ho bala hlooho ea pompo?
Karolong ea rona ea bohlokoa joaloka baetsi ba pompo ea hydraulic, re tseba palo e kholo ea mefuta-futa e lokelang ho nahanoa ha u khetha pompo e nepahetseng bakeng sa kopo e khethehileng. Sepheo sa sehlooho sena sa pele ke ho qala ho fana ka leseli ho palo e kholo ea matšoao a theknoloji ka har'a bokahohle ba pompo ea hydraulic, ho qala ka parameter "pompo ea hlooho".
Hlooho ea Pompo ke Eng?
Hlooho ea pompo, eo hangata e bitsoang hlooho e felletseng kapa hlooho e matla (TDH), e emela matla a felletseng a fetisoang mokelikeli ka pompo. E lekanya motsoako oa matla a khatello le matla a kinetic ao pompo e fanang ka eona ho mokelikeli ha o ntse o tsamaea ka har'a tsamaiso. Mohlala o hlakileng ka ho fetisisa ke oa phaephe e emeng e nyolohang ka kotloloho ho tsoa moo ho tsamaisoang teng. Mokelikeli o tla pompeloa ho theosa peipi limithara tse 5 ho tloha moo ho ntšang metsi ka pompo e nang le hlooho ea limithara tse 5. Hlooho ea pompo e amana ka tsela e fapaneng le sekhahla sa phallo. Ha lebelo la phallo ea pompo le phahame, le theola hlooho. Ho bohlokoa ho utloisisa hlooho ea pompo hobane e thusa lienjiniere ho lekola tšebetso ea pompo, ho khetha pompo e nepahetseng bakeng sa ts'ebeliso e fanoeng, le ho rala litsamaiso tse sebetsang hantle tsa lipalangoang tsa mokelikeli.
Likarolo tsa Hlooho ea Pompo
Ho utloisisa lipalo tsa hlooho ea pompo, ho bohlokoa ho qhaqha likarolo tse tlatsetsang hloohong eohle:
Hlooho e tsitsitseng (Hs): Hlooho e tsitsitseng ke sebaka se otlolohileng pakeng tsa ho huloa ha pompo le libaka tsa ho tsoa. E ikarabella bakeng sa phetoho e ka bang teng ea matla ka lebaka la bophahamo. Haeba ntlha ea ho tsoa e phahame ho feta ea ho huloa, hlooho e tsitsitseng e ntle, 'me haeba e le ka tlaase, hlooho e tsitsitseng e mpe.
Hlooho ya Lebelo (Hv): Hlooho ea lebelo ke matla a kinetic a fanoang ho mokelikeli ha o ntse o tsamaea ka liphaephe. E itšetlehile ka lebelo la mokelikeli 'me e baloa ho sebelisoa equation:
Hv=V^2/2g
Moo:
- Hv= Lebelo la hlooho (limithara)
- V= Lebelo la metsi (m/s)
- g= Ho potlakisa ka lebaka la matla a khoheli (9.81 m/s²)
Pressure Head (Hp): Hlooho ea khatello e emela matla a kenyelletsoeng mokelikeli ke pompo ho hlōla tahlehelo ea khatello tsamaisong. E ka baloa ho sebelisoa equation ea Bernoulli:
Hp=Pd−Ps/ρg
Moo:
- Hp= Hlooho ea khatello (limithara)
- Pd= Khatello sebakeng sa ho tsoa (Pa)
- Ps= Khatello sebakeng sa ho hula (Pa)
- ρ= Boima ba metsi (kg/m³)
- g= Ho potlakisa ka lebaka la matla a khoheli (9.81 m/s²)
Hlooho ea Khohlano (Hf): Friction Head e ikarabella bakeng sa tahlehelo ea matla ka lebaka la khohlano ea lipeipi le lisebelisoa tsa sistimi. E ka baloa ho sebelisoa equation ea Darcy-Weisbach:
Hf=fLQ^2/D^2g
Moo:
- Hf= Hlooho ea khohlano (limithara)
- f= Darcy friction factor (e senang dimension)
- L= Bolelele ba phala (limithara)
- Q= Sekhahla sa phallo (m³/s)
- D= Bophara ba phala (limithara)
- g= Ho potlakisa ka lebaka la matla a khoheli (9.81 m/s²)
Total Head Equation
Hlooho eohle (H) ea sistimi ea pompo ke kakaretso ea likarolo tsena kaofela:
H=Hs+Hv+Hp+Hf
Ho utloisisa equation ena ho lumella baenjiniere ho rala litsamaiso tse sebetsang hantle tsa pompo ka ho nahana ka lintlha tse joalo ka sekhahla sa phallo e hlokahalang, boholo ba liphaephe, phapang ea bophahamo le litlhoko tsa khatello.
Lisebelisoa tsa Lipalo tsa Pump Head
Khetho ea Pompo: Baenjiniere ba sebelisa lipalo tsa hlooho ea pompo ho khetha pompo e nepahetseng bakeng sa ts'ebeliso e itseng. Ka ho khetholla hlooho e hlokahalang, ba ka khetha pompo e ka finyellang litlhoko tsena ka katleho.
Moralo oa Tsamaiso: Lipalo tsa hlooho ea pompo li bohlokoa ho rala litsamaiso tsa lipalangoang tsa mokelikeli. Baenjiniere ba ka boholo ba liphaephe le ho khetha lisebelisoa tse loketseng ho fokotsa tahlehelo ea likhohlano le ho ntlafatsa ts'ebetso ea sistimi.
Matla a Matla: Ho utloisisa hlooho ea pompo ho thusa ho ntlafatsa ts'ebetso ea pompo bakeng sa katleho ea matla. Ka ho fokotsa hlooho e sa hlokahaleng, baenjiniere ba ka fokotsa tšebeliso ea matla le litšenyehelo tsa ho sebetsa.
Tlhokomelo le Tharollo ya Mathata: Ho beha leihlo hlooho ea pompo ha nako e ntse e ea ho ka thusa ho lemoha liphetoho ts'ebetsong ea tsamaiso, ho bontša tlhokahalo ea tlhokomelo kapa mathata a ho rarolla mathata a kang ho thibela kapa ho lutla.
Palo Mohlala: Ho Khetheha Kakaretso ea Hlooho ea Pompo
Ho hlakisa mohopolo oa lipalo tsa hlooho ea pompo, ha re nahaneng ka boemo bo nolofalitsoeng bo amang pompo ea metsi e sebelisetsoang ho nosetsa. Boemong bona, re batla ho fumana kakaretso ea hlooho ea pompo e hlokahalang bakeng sa kabo ea metsi hantle ho tloha letamong ho ea tšimong.
Li-parameter tse fanoeng:
Phapang ea Phahamiso (ΔH): Sebaka se otlolohileng ho tloha boemong ba metsi ka letamong ho ea sebakeng se phahameng ka ho fetisisa tšimong ea ho nosetsa ke limithara tse 20.
Frictional Head Loss (hf): Litahlehelo tsa likhohlano ka lebaka la liphaephe, lisebelisoa le likarolo tse ling tsa sistimi li fihla ho limithara tse 5.
Hlooho ya Lebelo (hv): Ho boloka phallo e tsitsitseng, ho hlokahala hlooho e itseng ea lebelo la limithara tse 2.
Pressure Head (hp): Hlooho e eketsehileng ea khatello, e kang ho hlōla khatello ea khatello, ke limithara tse 3.
Palo:
Kakaretso ea hlooho ea pompo (H) e hlokahalang e ka baloa ho sebelisoa equation e latelang:
Kakaretso ea Hlooho ea Pompo (H) = Phapang ea Phapang / Hlooho e tsitsitseng (ΔH)/(hs) + Tahlehelo ea Hlooho ea Frictional (hf) + Hlooho ea Lebelo (hv) + Hlooho ea Khatello (hp)
H = limithara tse 20 + 5 limithara + 2 limithara + 3 limithara
H = 30 limithara
Mohlala ona, kakaretso ea hlooho ea pompo e hlokehang bakeng sa tsamaiso ea nosetso ke limithara tse 30. Sena se bolela hore pompo e tlameha ho fana ka matla a lekaneng ho phahamisa metsi ka limithara tse 20 ho ea holimo, ho hlōla tahlehelo ea likhohlano, ho boloka lebelo le itseng, le ho fana ka khatello e eketsehileng ha ho hlokahala.
Ho utloisisa le ho bala ka nepo palo ea hlooho ea pompo ho bohlokoa bakeng sa ho khetha pompo ea boholo bo lekaneng ho fihlela sekhahla sa phallo e lakatsehang hloohong e lekanang le eona.
Nka fumana setšoantšo sa hlooho ea pompo hokae?
Letšoao la hlooho ea pompo le teng 'me le ka fumanoa homaqephe a dataea lihlahisoa tsohle tsa rona tsa mantlha. Ho fumana tlhaiso-leseling e batsi mabapi le data ea tekheniki ea lipompo tsa rona, ka kopo ikopanye le sehlopha sa mahlale le thekiso.
Nako ea poso: Sep-02-2024