According to the current form of development, submersible pump selection generally based on the actual site use process and water supply and drainage requirements from several aspects to consider: liquid delivery, the device head, the nature of the liquid, the piping layout and operation Operating conditions, such as five representatives note. The following will detail the basic conditions of the five submersible pump selection conditions: submersible pump selection guide submersible pump how to choose 1, the submersible pump flow: it is selected submersible pump important performance data, it is directly related to The entire plant's production capacity and delivery capacity. When selecting a submersible pump, it is based on the maximum flow and takes into account the normal flow. When there is no maximum flow, it is usually advisable to take 1.1 times of the normal flow as the maximum flow. The submersible pump with a large flow rate is recommended to use our large flow submersible pump. 2, the device lift: The lift system required for installation of the pump is another important performance data, generally to enlarge the 5% -10% head lift to selection. 3, the nature of the liquid: the nature of the liquid, including the name of the liquid medium, physical properties, chemical properties and other properties, the physical properties of temperature c density d, viscosity u, medium particle diameter and gas content, etc., which involves the system lift , Effective cavitation margin calculation and the type of suitable pump: chemical nature, mainly refers to the chemical corrosivity and toxicity of the liquid medium, is to choose the pump material and choose which type of shaft seal an important basis. 4, the pipeline layout: Installation of piping system conditions refers to the liquid from the height of the liquid from the liquid to the suction side, such as suction side of the lowest level, the discharge side of the highest level of some data and pipe length and length of the material, Pipe specifications, quantity, etc., in order to carry out the Department of comb head calculation and NPSH check. 5, operating conditions: the operating conditions are many, such as the operation of the liquid T saturated steam P, the suction side pressure PS, the discharge side of the container pressure PZ, altitude, ambient temperature operation is intermittent or continuous, submersible pump position Is fixed or removable? For submersible pump selection and research, we mainly through the above five parameters, with the increasing use of submersible pumps today, in the choice of submersible pump type and performance must be consistent with the device flow, head, pressure, temperature, cavitation flow, etc. Technical parameters of the request. Mechanical aspects should have high reliability, low noise, small vibration. Economically, it is also a crucial factor. Economically, the total cost of equipment, running, maintenance and management fees must be taken into account economically. Related Articles: Double-inlet pump Double-suction pump Selection Vertical pump selection
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