離心泵的選用
Centrifugal Pump Selection
(1) 根據(jù)被輸送液體的性質(zhì)及操作條件確定類(lèi)型;
(1) According to the liquid is transferred to determine the nature and type of operating conditions;
(2) 根據(jù)流量(一般由生產(chǎn)任務(wù)定)及計(jì)算管路中所需壓頭,確定泵的型號(hào)(從樣本或產(chǎn)品目錄中選取);
(2) The flow rate (usually by the production task may be) and the calculation of the pipeline pressure head needed to determine the pump model (from a sample or product catalog, select);
(3) 若被輸送液體的粘度和密度與水相差較大時(shí), 應(yīng)核算泵的特性參數(shù):流量、壓頭和軸功率。
(3) If the transport of liquid viscosity and density difference between the larger and water, shall account for the pump parameters: flow, pressure head and shaft power.
選擇離心泵時(shí),可能有幾種型號(hào)的泵同時(shí)滿足在佳范圍內(nèi)操作這一要求,此時(shí),可分別確定各泵的工作點(diǎn),比較工作點(diǎn)上的效率,擇優(yōu)選取。
Select centrifugal pump may have several types of pumps while meeting at the best operating within the scope of this request, this time, respectively ascertain the pump operating point, compare the efficiency of operating points, merit-based selection. |