The key technology of the installation of centrifugal pump is to determine the installation height of the pump. Installation height refers to the water surface to pump impeller center line of the vertical distance, it allows the ceiling should not be confused on a high vacuum and at 1 standard atmospheric pressure; the water temperature 20 degrees Celsius, test and determination to come. It does not take into account the current situation of water after the water pipe. The pump installation height should be allowed to suck up the vacuum after deducting the suction pipe loss head, the remaining part of the value, it is to overcome the actual height of water absorption. Pump installation height can not exceed the calculated value, otherwise, the pump will not draw water to. In addition, the impact of the value calculated is the water pipe resistance loss of lift, therefore, should adopt the shortest piping layout, and minimize the loaded elbow fittings, also can consider appropriate with larger diameter pipes to reduce the flow velocity in the tube.
It should be noted that the water pump installation location and water temperature is different from the test conditions, such as the local elevation of more than 300 meters or more than 20 degrees Celsius, the water temperature is calculated to be modified. Atmospheric pressure at different altitudes and the saturation vapor pressure at temperatures above 20 degrees celsius. However, when the water temperature is below 20 degrees Celsius, the saturated vapor pressure is negligible.
From the pipeline installation technology, suction pipes require strict sealing, can not leak, leakage, otherwise it will damage the pump water inlet of the vacuum, the pump to reduce the amount of water, serious when even pumping Sheung Shui to. Therefore, to do a good job in the pipeline interface, to ensure the quality of the construction of the pipeline connection.
