Energy-saving technology for three-stage centrifugal pumps

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The water pump is driven by a prime mover such as a motor to rotate the impeller, converting the mechanical energy of the prime mover into kinetic energy and pressure energy of the fluid being transported. In the spatial coordinate system (R, φ, Z) that rotates synchronously with the impeller, any point in space can be determined using this coordinate system. The flow velocity W at any point can be expressed as a function of the coordinates of that point, W=f(R, φ, Z); this is the basic concept of three-dimensional flow. The flow velocity at any point of the water pump can be obtained through three-dimensional flow calculations. The three-dimensional flow impeller design technique relies on the \"three-dimensional flow theory\" to divide the three-dimensional space inside the impeller into infinite sections. By analyzing various points within the impeller’s flow channels, a complete and accurate mathematical model of the fluid flow inside the impeller is established, followed by mesh generation and flow field calculations. The three-dimensional flow design method is employed to optimize various parameters such as the inlet and outlet angles of the impeller blades, the number of blades, the blade profile, and the shape of various cross-sections of the twisted blades. The resulting structure is capable of adapting to the actual flow patterns of the fluid, thereby preventing flow separation on the working surface of the blades, reducing flow losses. It also allows for control over the velocity distribution of all fluid particles inside, resulting in the optimal flow conditions within the pump and ensuring maximum efficiency in fluid transport. Zibo Yida Energy Saving Services Company is a professional technical firm specialized in providing energy-saving services for pump systems. It is constantly engaged in research on energy-saving technologies for three-dimensional flow impellers, and has used this approach to carry out technical upgrades on multiple pumps, resulting in significant energy savings in actual operation. The second batch of water pump energy-saving renovation projects we carried out recently for Binzhou Dàyǒu Company was successfully completed and inspected in January 2016. After replacing the KQSN250-M6 double-suction pumps with specially designed high-efficiency impellers, the flow rate increased slightly compared to before, while the current consumption of the pump motors dropped from 223A to 153.8A, resulting in an energy-saving rate of 30% ； The kqsn250-m9 double-suction pump was upgraded for increased capacity; with the same valves and piping system, its flow rate increased from 490 cubic meters per hour to 560 cubic meters per hour, while its efficiency also improved. Feel free to ask. Mobile: 18678162562, Engineer Zheng; Email: 18678162562@163.COM