Submersible pump selection - quality appraisal articles as an ordinary submersible pump demand - users, how to ensure that the submersible pump selected submersible pumps in the choice of submersible pump quality assurance, and its own needs match? First of all, to talk about a problem, there are several submersible pump manufacturers at home and abroad: Vydt special red jacket submersible pump - red card, Franklin Lan jacket submersible pump - Portland, Tianjin Tianfu Group's green jacket submersible pump - - Green card, Zhejiang Dae Tian Machinery Co., Ltd. (This order does not represent the quality ranking, there are not listed submersibles manufacturers). Submersible pump is characterized by: long life, pressure, fundamentally eliminate the phenomenon of air resistance, to solve the high temperature environment, high-lift, long distance pipeline pumps, positive displacement pumps, vane pumps and other negative pressure principle of the pump can not work The issue of environmental protection, energy saving, safety, smooth operation, is the best choice for gas station pump. Below the quality of submersible pumps identified several criteria: 1. Shelf life. A product quality is good or bad, the product shelf life is a mirror of this product. If the shelf life of a product is not ideal, it can be imagined, submersible pump in the course of once there is a problem, the first gas station to stop operations, submersible pump maintenance professionals, manufacturers generally require professional and technical personnel to rush To the scene, this time may be a day, two days, it may be a month, two months. If you can not repair it must be re-purchased during this transport installation time can be imagined, the loss of the gas station is self-evident. 2. From the performance curve of various submersible pumps, performance parameters identification. If you are a submersible pump demand, do not visit the pump before the pump from each manufacturer to obtain the performance curve of submersible pumps and parameters - flow curve. Mainly do the following: (1) Select the same power of the submersible pump, the submersible pump curve of each manufacturer removed (2) in each submersible pump curve select the same head point, record the flow at this time. If you choose to power 1.5KW submersible pump, find the head of 30 meters, record the flow of data at this time. (3) The record of the manufacturers of submersible oil flow values. (4) data analysis. In general, the difference between the manufacturers of this value will not be great, if there is a big difference with the other, generally you can determine the quality of the pump or performance problems; if it is not much difference, the larger the value to some extent Reflects the superior performance of this pump, reflecting the pump in the process, the design superiority. (Of course, you can also select the same flow point in each submersible pump curve, record the lift at this time, compared to the lift .3. Subclassification of submersible pumps in the actual application of submersible pumps, although the submersible pump has Has been constantly praised, but the selection is not perfect, gas station submersible pump which is also not ideal situation .This situation is a very important reason is the selection is not reasonable.For example, one with a self-priming pump Of the gas station, there are two caliber of 6 diesel guns, pipe diameter of 1.5 inches, the total length of 50 meters pipe, and now refurbished gas stations, pumps and submersible pumps will be diverted to use, because the pipeline took only two years, buried In the underground, decided to change only the pump without changing the pipeline.There is such a problem, a self-priming pump with a gun, submersible pump a pump with multiple guns.A self-priming pump pipe is 1.5 inches, and submersible pump Generally require the use of 2-inch seamless steel pipe below 1.5-inch pipe and 2-inch pipe will result in double the head loss.This requires professional and technical personnel or manufacturer to calculate, and finally select the appropriate model .This process Is a professional and practical people can do so, as a user, you can require the submersible pump manufacturer or distributor to come up with the basis of selection based on at least including the total pipe length, pipe diameter, the number of valves caused Of the flow or head loss.If you can not do that you may have to carry forward the doubts, ask yourself, this pump is not the most suitable choice.This selection can be based on the manufacturer in this area is professional, mapping Differences in product quality, reflecting the dedication of manufacturers and dedication to customer service quality (perfect service and not just on-site installation, greetings, more importantly, choose the most appropriate product service customers).
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