水泵温习提纲(国外英文资料).doc

水泵复习提纲(国外英文资料) Pump and pump station review the main points Read the textbook and finish the homework What is the difference between a single and a biphon wheel? P7 The main parts and functions of centrifugal pump? P7-14 How is the single suction centrifugal pump axial force produced? What is the balancing act? P13 ~ 14 The definition and unit of the main performance parameters of the pump. P14-16 The meaning and calculation of shaft power, effective power. P14 Effect of centrifugal pump efficiency? What is the total efficiency of the pump? P30 Efficiency of the pump? How to calculate the power consumption of the pump? Pump nameplate: 12sh-28a meaning? P14, P16, The relationship between the pump total head and pressure gauge and vacuum gauge. P23-24 The basic equation of centrifugal pump and its derivation process. P18-19 What are the three hypotheses of the theoretical lift formula of centrifugal pump? P18 How should the actual lift of centrifugal pump be fixed? Figure 2-24. P21-22, were Does the lift of centrifugal pump have anything to do with the size and speed of the impeller? Why is that? P20 Does the theoretical lift of centrifugal pump have any relation to the density of the transported liquid? P20 Transport different density fluids, Q, H, and what parameters are different? Why is that? P14 What are the geometric parameters of the centrifugal pump impeller exits? The speed triangle of the impeller? P17-18 How does centrifugal pump work? How does the other pump, such as shaft pump and reciprocating pump work? P7. P90. P123 What is the shape of the q-h theoretical curve of the centrifugal pump? What amendments are needed in theory? The basic shape of the measured Q ~ H curve is drawn. were What is the difference between the forward curved and curved blades? Why is that? H = A + BQT... H = A - BQT When Q = 0, N is the smallest, what is the significance of this in practice? Explain the operation method of closing the switch. P32 How does the curve of Q ~ H, Q ~