Intshayelelo kwimigqaliselo eqhelekileyo yepompo (1) - izinga lokuhamba kwamanzi + imizekelo

1. Ukuhamba–Ibhekisa kumthamo okanye ubunzima bolwelo oluziswa yiimpompo yamanzingexesha leyunithi nganye. Ichazwa yi-Q, iiyunithi zokulinganisa ezisetyenziswa rhoqo yi-m3/h, m3/s okanye ii-L/s, t/h.

2.Intloko–Ibhekisa kumandla anyukileyo okuthutha amanzi nge-unit gravity ukusuka kwindawo yokungena ukuya kwindawo yokuphuma yepompo yamanzi, oko kukuthi, amandla afunyenwe emva kokuba amanzi nge-unit gravity edlula kwipompo yamanzi. Ichazwa yi-h, iyunithi yi-Nm/N, ebonakaliswa ngokwesiko ngokuphakama kwekholamu yolwelo apho ulwelo lupompelwa khona; Ubunjineli ngamanye amaxesha bubonakaliswa ngoxinzelelo lomoya, kwaye iyunithi esemthethweni yi-kPa okanye i-MPa.

 ( Amanqaku: Iyunithi: m/p = ρ gh)

Ngokwenkcazo:

H=E_d-E_s

E_d-Amandla ngeyunithi nganye yobunzima bolwelo kwi-flange yokuphuma ye-outletimpompo yamanzi;

I-Es-Energy ngeyunithi nganye yobunzima bolwelo kwi-flange yokungena yepompo yamanzi.

E_d=Z _d + P _d/ ρg + V²_d /2g

E_s=Z _s+ P_s / ρg+V²_s /2g

Ngokwesiqhelo, intloko ekwiphepha legama lepompo kufuneka iquke la macandelo mabini alandelayo. Inxalenye enye bubude bentloko obulinganiswayo, oko kukuthi, ukuphakama okuthe nkqo ukusuka kumphezulu wamanzi echibini lokungena ukuya kumphezulu wamanzi echibini lokukhupha amanzi. Eyaziwa ngokuba yintloko yokwenyani, inxalenye yayo kukulahlekelwa kukumelana endleleni xa amanzi edlula kumbhobho, ngoko ke xa ukhetha intloko yepompo, kufuneka ibe sisiphumo sentloko yokwenyani kunye nokulahleka kwentloko, oko kukuthi:

Umzekelo wokubala intloko yepompo

Ukuba ufuna ukubonelela ngamanzi kwisakhiwo esiphakamileyo, masithi amanzi akhoyo kwipompo angama-50m³/h, kwaye ukuphakama okuthe nkqo ukusuka kumphezulu wamanzi echibini lokungenisa amanzi ukuya kwinqanaba eliphezulu lamanzi okuhambisa amanzi yi-54m, ubude obupheleleyo bombhobho wokuhambisa amanzi yi-150m, ububanzi bombhobho yi-Ф80mm, kunye nevalvu enye esezantsi, ivalvu enye yesango kunye nevalvu enye engabuyiyo, kunye nee-bends ezisibhozo ezingama-900 ezine-r/d = z, inkulu kangakanani intloko yepompo ukuhlangabezana neemfuno?

Isisombululo:

Ukususela kwintshayelelo engasentla, siyazi ukuba intloko yepompo yile:

H =H_yokwenyani +H _ilahleko

Apho: H bubude obuthe nkqo ukusuka kumphezulu wamanzi wetanki yokungena ukuya kwinqanaba eliphezulu lokuhambisa amanzi, oko kukuthi: H_yokwenyani= 54m

H_ilahlekoyiyo yonke ilahleko esendleleni, ebalwa ngolu hlobo lulandelayo:

Iipayipi zokufunxa nezokukhupha amanzi ezaziwayo, iingqiniba, iivalvu, iivalvu ezingabuyiyo, iivalvu ezisezantsi kunye nezinye iidayamitha zepayipi ziyi-80mm, ngoko ke indawo yayo enqamlezileyo yile:

Xa isantya sokuhamba kwamanzi singama-50 m³/h (0.0139 m³/s), izinga lokuhamba eliphakathi elihambelanayo lilandelayo:

Ngokwedatha, ilahleko yokumelana nobubanzi be-H xa isantya sokuhamba kolwelo siyi-2.76 m/s, ilahleko yombhobho wentsimbi onomhlwa kancinci weemitha ezili-100 yi-13.1 m, nto leyo eyimfuneko yale projekthi yokubonelela ngamanzi.

Ukulahleka kombhobho wokukhupha amanzi, ingqiniba, ivalvu, ivalvu yokujonga kunye nevalvu esezantsi kuyenzeka.2.65m.

Intloko yesantya sokukhupha ulwelo kwimpumlo:

Ke ngoko, intloko iyonke yepompo H

H _intloko= H _yokwenyani + H _{ilahleko iyonke}=Abantu abangaphezu kweminyaka engama-5419.65+2.65+0.388 = 76.692 (m)

Xa ukhetha unikezelo lwamanzi oluphezulu, ipompo yonikezelo lwamanzi enokuhamba kwamanzi okungaphantsi kwama-50m³/ h kunye nentloko engaphantsi kwama-77 (m) kufuneka ikhethwe.