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A good way to choose a new energy vehicle water pump

Issuing time:2022-08-30 09:00

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The selection of the pump should be based on the technological process and drainage needs. In addition to this, five aspects need to be considered, namely, the liquid transport volume, equipment head, liquid properties, pipeline placement and operating conditions.

1. Flow rate is one of the most important functional data for selecting pumps, which is directly related to the production capacity and delivery capacity of the entire equipment. When selecting a pump, take the maximum flow as the basis to coordinate the normal flow. When there is no maximum flow, generally 1.1 times the normal flow can be taken as the maximum flow.

2. The lift required by the equipment system is another important functional data for pump selection, and most of them need to be selected by expanding the lift by 5% to 10%.

3. Liquid properties, including the name of the liquid medium, physical properties, chemical properties and other properties, physical properties include temperature c density d, viscosity u, solid particle diameter and gas content in the medium, etc., which are related to the head of the system, useful NPSH accounting and suitable pump type: chemical properties, mainly referring to the chemical corrosiveness and toxicity of the liquid medium, are the important basis for the use of pump materials and the type of shaft seal used.

4. The pipeline placement conditions of the equipment system refer to the liquid delivery height, the liquid delivery distance and the liquid delivery direction, such as the lowest liquid level on the suction side and the highest liquid level on the discharge side, as well as the pipeline specifications and their lengths, materials, pipe fitting specifications, and quantities. etc., in order to do a good job in the calculation of the head of the system comb and the check of the NPSH.

5. There are many operating conditions, such as liquid operation T, saturated steam force P, suction side pressure PS (positive), discharge side container pressure PZ, altitude, ambient temperature operation is void or continuous, pump position Is it fixed or removable.

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