The key to the installation of the centrifugal pump is to determine the height of the installation of the pump. The height is the vertical distance from the water surface to pump impeller center line, and it allowed to smoke confused on a high vacuum, high vacuum suction on the vacuum pump inlet section refers to the value on the pump nameplate or product label instructions on the permit, and is in the 1 standard atmospheric pressure; water temperature 20 degrees Celsius, the determination of test. It does not take into account the water flow condition after the water pipe is matched. The installation height of the pump should be allowed to suck up the vacuum height and deduct the remaining part after the loss of the suction pipe. It should overcome the actual height of the terrain. The height of the installation of the centrifugal pump can not exceed the calculated value, otherwise the water pump will not be pumped up. In addition, the influence of the calculated value is the resistance loss head of the suction pipe. Therefore, the shortest piping layout should be adopted, and the fittings such as elbow should not be installed as much as possible. It is also possible to consider that a larger diameter pipe should be properly fitted to reduce the flow velocity inside the pipe.
It should be pointed out that the elevation and water temperature of the site are different from the experimental conditions, for example, the local temperature above 300 meters or the temperature of the pumped water is more than 20 degrees Celsius. The calculated value should be corrected. That is, the atmospheric pressure at different elevations and the saturated vapor pressure at a temperature above 20 degrees Celsius. However, when the water temperature is below 20 degrees Celsius, the pressure of saturated steam can be ignored. Stainless steel chemical pump
From the pipe installation technology, the suction pipe must be strictly sealed, and it can't leak or leak. Otherwise, it will destroy the vacuum degree at the inlet of the pump, reduce the water volume of the pump, and even even get no water. Therefore, it is necessary to do a good job of the pipe interface to ensure the quality of the pipeline connection.
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