锅炉给水泵的水力设计毕业设计.doc

摘 要 本次设计应用了离心泵的理论、采用先进的科学方法设计计算，根据设计任务的要求，通过对离心泵的分析，重点进行锅炉给水泵的水力设计计算。 在锅炉给水泵的设计中，确定锅炉给水泵的结构，采用单级单吸，泵体双层结构。对泵体的各部分所用的材料进行择优选择。 泵参数的确定是这次设计的重点。通过泵的进出口的尺寸确定泵的各方面效率，从而反映它的性能是否合乎标准。对泵的水力设计包括：叶轮、导叶、平横盘和涡室等的设计计算。讨论液体在泵中的流动一般采用3个方程：连续方程、欧拉方程和伯努利方程。对于难用文字描述的图形，采用专业的绘图软件绘图，使构件的结构更加直观。 为了本次设计的可靠性，在对锅炉给水泵的水力设计之后，还要对泵的部分零件进行强度计算和强度校核。包括：轴、键、联轴器、叶轮和平衡盘等的强度计算。 关键词：锅炉给水泵；水力计算；强度计算。 Abstract This design is applied to the theories of the centrifugal pump, and adopts the advanced scientific method, According to the request of the design mission, through the analysis of the centrifugal pump working principle, it concentrates more on the design calculation of the water conservancy of manifold–boiler water supply pump. The design of the boiler water supply pump adopts the structure of the three–class lists to absorb with a bilayer in body and the materials which are used for each part of the pump body are supposed to be the best. The major point for this design is to fix the pump parameter. The size of the entrance and exit of the pump is considered to identify the efficiency in all the aspects of the pump , thus reflect whether its function conforms to the standard or not. The following is about the design for the water conservancy of the pump including the disk and the room .etc. Generally speaking, we always adopt three equations for the discussion about the flowing of the liquid in the pump. They are the Continuous Equation, the Eurolla Eqution and the Banuly Equation . For the complicated calculation procedure, I adopt the C language to organize the procedure. As to the graphs which are hard to describe clearly with the written language, I adopt the professional drawing software to draw the pictures to make the structure of the components more ocular. For the sake of the reliability of this design, after designing the boiler water conservancy of the water supply pump, I also calculate the strength and check the intensity of some parts of the pump including the strength calculation o