INTSHAYELELO KWIINGXAKI ZEMPIMELWANA YOKUGQIBELA

I-1.Flow-I-SEBENZISE KUMBULELO OKANYE UKUGCINWA KWE-FIImpompo yamanziNgexesha leyunithi ngalinye.Ukushicilelwa ngu-Q, iiyunithi ezisetyenziswayo ezisetyenziswayo ze-M3 / h, m, m, s okanye l / h.

2. Intloko-Ibhekisa kumandla anyukayo bokuhambisa amanzi ngeyunithi yeyunithi ukuya kwi-Inlet kwimpompo yamanzi, oko kukuthi, amandla afunyenwe emanzini anempompo yamanzi. Iboniswe yi-H, iyunithi i-NM / N, eboniswe ngokwesiqhelo kukuphakama kwekholamu yolwelo apho kuvuthwe ulwelo; Ubunjineli ngamanye amaxesha bubonakaliswa ngoxinzelelo lwe-thamospic, kwaye iyunithi yezomthetho yi-KPA okanye i-MPA.

 (Amanqaku: Icandelo: m/p = ρ gh)

Ngokwengcaciso:

H = e_d-E_s

E_d-Onenurgy yeyunithi yeyunithi yolwelo kwifuthe leImpompo yamanzi;

I-Es-Alls kwiCandelo leYunithi yeYunithi kwi-Inlet Flat yempompo yamanzi.

E_d=Z _d + P _d/ ρG + V²_d / 2G

E_s=Z _s+ P_s / ρG + v²_s / 2G

Ngokwesiqhelo, intloko kwi-pumpte yempompo kufuneka ibandakanye la macandelo mabini alandelayo. Inxalenye enye ephezulu yokuphakama, oko kukuthi, ukuphakama okuthe nkqo kumphezulu wamanzi kwiphuli ye-inlet ukuya kumphezulu wamanzi. Yaziwa njengentloko, inxenye yayo yilahleko echanisiweyo endleleni xa amanzi edlula entlokweni, ke xa ethatha intloko, kufanele ukuba ibe sisixa sentloko kunye nokulahleka kwentloko, oko kukuthi:

Umzekelo woBalo lwePump

Ukuba ufuna ukubonelela ngamanzi kwisakhiwo esiphakamileyo, cinga ukuba ukubonelelwa kwamanzi ngoku impompo yi-50m³/ h, kunye nokuphakama okuthe nkqo ukusuka kumphezulu wamanzi wechibi lokutya ukuya kwelona nqanaba liphezulu lokuhambisa amanzi yi-154m, i-valve ye-will, kunye ne-valve engasasebenziyo, kwaye i-valve enye yesango, kwaye i-Itree i-R / D = Z Intloko yePump yokuhlangabezana neemfuno?

Isisombululo:

Ukususela kwintshayelelo engentla, Siyazi ukuba intloko yempompo yile:

H =H_okwenyani +H _ilahleko

Phi: h ingqondo ethe nkqo ukusuka kumphezulu wamanzi wetanki ye-inlet ukuya kwinqanaba eliphezulu lokudlulisela inqanaba lamanzi adlulayo, oko kukuthi: h_okwenyani= 54m

H_ilahlekoZonke iintlobo zelahleko kumbhobho, ebalwa ngolu hlobo lulandelayo:

Imibhobho ye-Squage, imibhobho ye-Squage, iValves, iValve ezingekho mthethweni, i-valve esezantsi kunye nezinye iidayimitha zombhobho zingama-80mm, ngoko ke indawo yayo yecandelo yile:

Xa inqanaba lokuhamba lingama-50 m³/ h (0.0139 m³/ s), ireyithi yexabiso eliPhezulu elihambelanayo:

Ilahleko yokuchasana nedayameti h, ngokwedatha, xa inqanaba lokuhamba kwamanzi liyi-2.76 m / s, ilahleko yemibhobho yentsimbi egudileyo yi-13.1 m, eyimfuno yale projekthi yokubonelela ngamanzi.

Ukuphulukana nombhobho wokuntywila, i-elbow, i-valve, jonga i-valve kunye nevalve esezantsi2.65m.

Intloko ye-velocity yokukhupha ulwelo oluvela kwi-nozzle:

Ke ngoko, intloko ye-H iphela yempompo

H _intloko= H _okwenyani + H _{Ilahleko iyonke}=I-54 +19.65 + 2.65+0.388 = 76.692 (m)

Xa ukhetha ubonelelo lwamanzi aphezulu, impompo ye-pump yokuhambisa engaphantsi kwe-50m³/ h kwaye intloko ingaphantsi kwe-77 (m) kufuneka ikhethwe.