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Pipeline pump selection technique

China Fuan Zhongzhi Pump Co., Ltd. certification
China Fuan Zhongzhi Pump Co., Ltd. certification
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Pipeline pump selection technique

Pipeline pump selection technique

Pipeline pump selection should be based on the process flow, water supply, and drainage requirements, from five aspects, including liquid delivery, device head, liquid properties, piping layout, and operating conditions.

1. Colloid mill flow is one of the important performance data of pump selection, which is directly related to the production capacity and conveying capacity of the whole unit. For example, the normal, minimum, and maximum flow rates of the pump can be calculated in the design institute's design. When the pump is selected, the maximum flow rate is used as the maximum flow rate. When there is no maximum flow rate, 1.1 times the normal flow rate can be taken as the maximum flow rate.

2. The head required for the system is another important performance data of the pump. The metering pump is generally selected by amplifying the head by 5%-10%.

3, liquid properties, including liquid media name, physical properties, chemical properties, and other properties, physical properties are temperature c density d, viscosity u, solid particle diameter and gas content in the medium, etc., which involves the lift of the system, effective gas Erosion calculation, and type of suitable pump: chemical properties, mainly refers to the chemical corrosiveness and toxicity of the liquid medium. The rotor pump is an important basis for selecting the pump material and selecting the shaft seal type.

4. The pipeline arrangement conditions of the equipment system refer to the data of the liquid feeding height, the liquid feeding distance, the lowest liquid level on the suction side, the highest liquid level on the discharge side, and other data and pipe specifications and their lengths, materials, pipe fittings specifications and quantities. Etc., to carry out the calculation of the combing process and the checking of the NPSH.

5. There are many operating conditions, such as liquid operation T saturated steam force P, suction side pressure PS (absolute), discharge side container pressure PZ, altitude, ambient temperature operation is a gap or continuous, pump position is fixed still a movable screw pump.



Fuan Zhongzhi Pump Co., Ltd


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Pub Time : 2019-05-18 08:40:52 >> News list
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