With the continuous development of modern science and technology, the pump has also made great changes in the design methods and progress, with vertical multistage centrifugal pump as an example. It has replaced the original appearance of the horizontal, small footprint, out of water at the same level, a wide range of applications, can be used in power plant boiler feed pump, or marine pumps on the pump or industrial pump, submerged pump Wait. Vertical multistage centrifugal pumps are now moving toward high capacity, high speed, high efficiency, high reliability, low noise and automation. 1, Capacity increase of large capacity vertical multistage centrifugal pump can reduce equipment cost, reduce construction cost, save resources, facilitate management and automation, at the same time, it can also improve the technical and economic indexes and operation reliability of the unit. 2, high-speed General vertical multistage centrifugal pump speed 3000R / MIN, with the development of science and technology, the pump speed is higher and higher, for the pump, increase the speed can improve single-stage lift, so when the total lift is not Variable time can reduce the pump series, shorten the length of the pump shaft, reduce size, reduce weight, saving raw materials and manufacturing costs. 3, high efficiency Vertical multistage centrifugal pump is a universal product, the power consumption is objective, for which we must improve pump efficiency and save energy. 4, high reliability When the vertical multistage centrifugal pump to the high capacity, high speed direction, the reliability of the problem will be particularly prominent, only the pursuit of high efficiency and neglect of reliability, then the loss is often greater than the energy saving in operation. 5, low noise thermal power plant is a strong noise source, noise pollution and air pollution, environmental pollution, endangering human health 6, automation With the continuous development and application of computer and network technology, many systems have achieved DCS automation control, In the DCS pump is no longer alone control but network monitoring and control. Pump product development has been from the original computer-aided CAD software development to the present CFD CFD analysis and application, and then to the pump virtual product design VPD and virtual product development VPD direction.