The birth of each device is the market gives the expectations, they are born under the needs of the market, but also in the market demand for progress in this survival of the fittest in the social environment, how to maintain the competitiveness of their products, its The parameters must meet the production needs, especially in the current environmental protection, energy-saving concept of promotion, green products have received more attention. Taking vertical centrifugal pump as an example, it plays a very important role in modern industry and daily life. Next, we will explain the parameter information of vertical centrifugal pump in detail, hoping to make another explanation for such topics as parameters. Vertical Centrifugal Pump Parameters 1, flow rate Q: per unit time through the closed pipe or open channel effective section of the fluid volume. 2, head H: expressed as the fluid pressure head, kinetic head and bit head increases, that is H = (p2-p1) / Ïg + (c2 ^ 2-c1 ^ 2) / 2g + z2-z1. 3, efficiency η: refers to the ratio of useful power to drive power. 4, Power: The work done per unit time is called the power, with P said 5, speed n: per unit time around the circle around the circle turned 6, the necessary cavitation margin (NPSH): pump liquid at work The impeller at the inlet due to a certain vacuum pressure will produce vapor, vaporization of bubbles in the liquid particle impact movement, the impeller and other metal surface erosion, thus undermining the impeller and other metals, vacuum pressure at this time called the vapor pressure, cavitation The margin is the pressure drop from the suction port of the pump to the point K at the lowest pressure. Units marked with meters, with (NPSH) r. Through the above description of the parameters of the vertical centrifugal pump, vertical centrifugal pump parameters, we already have a basic theoretical knowledge. But theoretical knowledge still needs to be put into practice in order to ensure that researchers are not wasted. China's economy and technology are developing at a high speed. Whether the vertical centrifugal pump can break through a large amount of gold rush and the development of vertical centrifugal pump parameter information is of great significance.
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