kumhanya kwesimba
1. Simba Rinoshanda:Iyo inozivikanwawo se simba rekubuda.Inoreva simba rinowanikwa ne
mvura inoyerera nemupombi yemvura mune imwe nguva kubva mumvura
pombi .
Pe=ρ GQH/1000 (KW)
ρ——Kuwanda kwemvura inounzwa nepombi (kg/m3)
γ——Huremu hwemvura inounzwa nepombi (N/m3)
Q——Kuyerera kwepombi (m3/s)
H——Musoro wepombi (m)
g——Kuwedzera kwesimba rinokwevera zvinhu pasi (m/s2).
2.Kubudirira
Inoreva chikamu chechiyero chesimba rinoshanda repombi kune simba re shaft, rinoratidzwa ne η.Hazvibviri kuti simba rose re shaft riendeswe kune mvura, uye kune kurasikirwa kwesimba mupombi yemvura.Nokudaro, simba rinoshanda repombi rinogara riri pasi pesimba re shaft.Kushanda zvakanaka kunoratidza dhigirii inoshanda yekushandurwa kwesimba repombi yemvura, uye yakakosha tekinoroji nehupfumi indekisi yepombi yemvura.
η =Pe/P×100%
3. Shaft simba
Iyo inozivikanwawo sesimba rekuisa.Zvinoreva kusimba rinowanikwa nepombi shaft kubva kumushini wemagetsi, iyo inoratidzwa naP.
PShaft simba =Pe/η=ρgQH/1000/η (KW)
4. Kufananidza simba
Zvinoreva simba remuchina wemagetsi unofananidzwa nepombi yemvura, inomiririrwa naP.
P (Matching Power)≥ (1.1-1.2) PShaft simba
5.Kutenderera Speed
Inoreva nhamba yekuchinja paminiti ye impeller yepombi yemvura, iyo inomiririrwa ne n.Iyo unit r/min.
Nguva yekutumira: Zvita-29-2023