Centrifugal pumpsIntroduction:it can reflect the multistage pumping station optimal operation guidelines for many. Optimal scheduling model. The model can be solved by dynamic programming the optimal unit commitment of all stations. Using the mathematical model to find the optimal operation combination. Dynamic programming, optimal scheduling problem of multi-stage pumping stations. Multistage pump by computer design and optimization of processing, the company has strong technical force, rich production experience and improve the detection means, to ensure product quality is stable and reliable. Multistage pump, horizontal, single suction multistage, segmental centrifugal pump. With high efficiency, wide range of performance, the safe operation of the smooth, low noise, long service life, convenient installation and repair etc. For the transport of water or similar physical and chemical properties in water and other liquids. You can change the pump flow components, sealing material form and increase the cooling system is used for conveying hot water, oil, corrosive or abrasive particles of the medium. Product implementation of JB / T1051-93 multistage rinsing centrifugal pump - Types and basic parameters of the standard. Key words: multistage pumping stations, optimal dispatching, dynamic programming, mathematical model.One, multistage pump structuremultistage pumps mainly composed of a stator, rotor, bearings and seal of four parts:1, multi-stage pump stator is mainly composed of a suction section, middle paragraph and out, such as guide vane component, there will be tension bolt clamping paragraphs, posing in studio. D type pump general level of aspiration, vertical spit up; used in oilfield water injection, pump inlet and outlet are vertical upward. DG type multistage pump, entrance are vertical upward.3, multi-stage pump bearings by the bearing body, a bearing and a bearing gland components, bearings with grease or oil lubrication.4, multi-level soft packing shaft seal sealing, mainly by water and the end cover of the sealed box body, filler, composed of the retaining ring. D type pump water pump water from the pressure of the water. DG type pump seal water from an external water supply.In 5, the multi-stage pump rotary pump through the flexible coupling driven directly by the original motivation. From the original motivation depends on the pump, pump is clockwise, D type DG pump is a horizontal single suction multi-stage centrifugal pump. For the transport of water ( containing impurity is less than 1%, particle size of less than0.1mm ) or similar physical and chemical properties in water and other liquids. D type pump for transporting medium temperature less than 80 DEG C, suitable for mine drainage, water flooding, factories and city to, drainage and other occasions. Oilfield water injection pump according to corrosion, pump using different materials. DG type pump for transporting medium temperature less than 105 DEG C, applicable to all kinds of boiler feed waterTwo two, multistage pump with single stage pump difference1, single-stage pump is the only one of the pump impeller, the maximum lift is only 125meters;2, pump refers to two or more than two of the pump impeller, the maximum can lift more than125 m;Multistage pump head in a single-stage pump needs must be equipped with two motor case, through an increase in the number of impeller with four motors, which can increase pump life and reduce the noise of the unit, but the multistage pump repair relative single stage pump is a little difficult.In3, the actual needs of pump head is less than 125 meters, the area under the pumping station, pump prices ( in general multi-stage pump prices than the high single-stage pump ), and other factors to consider in the selection of a single-stage pump or pump. With the development of technology, single-stage impeller pump can pump by increasing the speed to increase the pump head, instead of multistage pump, but the price is a little.In three, the multi-stage pump maintenance and operations management attentionPump power to be divided into two areas with the machine, the machine, the main maintenance records of the previous tune out than you know. The second is the aspect of power, to understand the power of each pump motor, control system of his understanding of a certain four multistage pump maintenance and operations management attentionPump power to be divided into two areas with the machine, the machine, the main maintenance records of the previous tune out than you know. The second is the aspect of power, to understand the power of each pump motor, control system of his understanding of a certain. Five stage pump parameterD and DG series multi stage centrifugal pumps 流量：6.3450立方米每小时 扬程75685米 HEAD: 75685米 Capacity:6.3450立方米每小时 电机功率：5.51050kw Motor power：5.51050kw 产品标准：JB/T1051-93 Product standard：JB/T1051-93 The exami