Isingeniso semigomo yePump evamile (1) - Izinga lokugeleza + Izibonelo

1.Flow-Reaters kwivolumu noma isisindo soketshezi olulethwa yiiphampu yamanziNgesikhathi seyunithi ngayinye.Expred ngu-Q, amayunithi asetshenziswa kakhulu wokulinganisa yi-M3 / H, M3 / S noma i-L / S, T.

2.Head-Kusho amandla akhuphuke kakhulu wamanzi athutha ama-unit amandla adonsela phansi e-inlet kuya kokuphuma kwephampu yamanzi, okungukuthi, amandla atholwe ngemuva kokudonsela amanzi adlula empompini yamanzi. Kuvezwe ngu-H, iyunithi yi-nm / n, okuvezwa ngokwesiko ukuphakama kwekholomu kagesi lapho uketshezi luphonsa khona; Ubunjiniyela kwesinye isikhathi kuvezwa ngokucindezela komkhathi, kanti iyunithi yezomthetho yi-KPA noma i-MPA.

 (Amanothi: Iyunithi: m/p = ρ gh)

Ngokusho kwencazelo:

H = E_d-E_s

E_d-Nonergy ngesisindo seyunithi ngayinye kaketshezi e-Outlet Flange yeiphampu yamanzi;

Es-Energy ngesisindo seyunithi ngayinye kaketshezi ku-inlet flange yepompo yamanzi.

E_d=Z _d + P _d/ ρ + V²_d / 2g

E_s=Z _s+ P_s / ρG + v²_s / 2g

Imvamisa, ikhanda kwi-Pampu kufanele ifake lezi zingxenye ezimbili ezilandelayo. Ingxenye eyodwa ukuphakama kwesihloko esilinganiswayo, okungukuthi, ukuphakama okuthe mpo okuvela ebusweni bamanzi echibini le-inlet kuya endaweni yamanzi echibi lokuphuma. Eyaziwa ngokuthi yikhanda langempela, ingxenye yalo ukulahleka kokumelana endleleni lapho amanzi edlula ngepayipi, ngakho-ke lapho ukhetha ikhanda lempompo, kufanele kube yisamba sekhanda langempela nokulahleka kwekhanda, okungukuthi:

Isibonelo sokubala kwekhanda lepompo

Uma ufuna ukunikeza amanzi esakhiweni esiphakeme kakhulu, ake sithi ukulethwa kwamanzi kwamanje kungama-50m³/ h, nokuphakama okuvelele okuvela endaweni yamanzi echibini eliphakeme kakhulu elisezingeni eliphakeme kakhulu lamanzi angu-54m, ububanzi bepayipi elilodwa, ne-900 begoba elingemuva, futhi linamakhanda ayisishiyagalombili angenabuyiselwe ku-R / D = z, likhulu kangakanani ikhanda lempompo ukuze lihlangabezane nezidingo?

Isixazululo:

Ukusuka esingenisweni esingenhla, siyazi ukuthi ikhanda lempompo yile:

H =H_-liqiniso +H _{ukulahlekelwa}

Lapho: h ubude mpo buphakeme obuvela ebusweni bamanzi ethangi lokungena emanzini kuya ekudluliseni izinga lamanzi eliphakeme kakhulu, okungukuthi: h_-liqiniso= 54m

H_{ukulahlekelwa}Ingabe zonke izinhlobo zokulahleka epayipini, ezibalwa ngokulandelayo:

Amapayipi amunca aziwayo kanye nama-drainage, ama-elbows, ama-valves, ama-valves angabuyi, ama-valve aphansi namanye amapayipi amapayipi angama-80mm, ngakho-ke indawo yayo yesiphambano yile:

Lapho isilinganiso sokugeleza singama-50 m³/ h (0.0139 m³/ s), isilinganiso sokugeleza esihambisanayo sikhona:

Ukulahleka kokumelana kanye ne-H, ngokusho kwemininingwane, lapho isilinganiso se-liquid flow singama-2.76 m / s, ukulahleka kwamapayipi ensimbi avundwa ngamamitha ayi-100 kungu-13.1 m, okuyisidingo sale projekthi yokuhlinzekwa kwamanzi.

Ukulahleka kwepayipi lokudonsa, i-elbow, i-valve, hlola i-valve ne-valve engezansi2.65m.

Ikhanda le-velocity lokukhipha uketshezi oluvela ku-nozzle:

Ngakho-ke, inhloko ephelele yephampu

H _ikhanda= H _-liqiniso + H _{ukulahleka okuphelele}=54 +19.65 + 2.65+0.388 = 76.692 (m)

Lapho ukhetha ukuhlinzekwa kwamanzi okuphezulu, iphampu yokuhlinzekwa kwamanzi ngokugeleza okungaphansi kwama-50m³/ h futhi ikhanda lingaphansi kwama-77 (m) okufanele akhethwe.