The Installation Notes for Stainless Steel Multistage Centrifugal Pump:
1. From the stainless steel multistage centrifugal pump installation technology, the suction pipe requires a strict seal condition, can not have pipe leak or leakage, otherwise it will destroy the vacuum degree at the water inlet of the pump, cause the pump water output is reduced, or it will too serious to draw water. Therefore, we must earnestly do a good job in the interface of the pipeline to ensure the construction quality of pipeline connection.
2. It should be pointed out that when the head and the water temperature of the stainless steel multistage centrifugal pump and pipeline centrifugal pump installation are different from the experimental conditions, if the local elevation is more than 300 meters or the pumped water temperature exceeds 20 degrees Celsius, the calculated value shall be corrected. That is, the atmospheric pressure at different elevations and the saturated vapor pressure above the water temperature of 20 degrees Celsius.However, when the water temperature is below 20 degrees Celsius, the saturated steam pressure can be negligible.
3. To confirm the pump installation height (ie suction). This height refers to the vertical interval between the water surface and the center-line of the pump impeller. It must not be confused with the allowable suction height. The vacuum height allowed on the water pump product elucidation book or nameplate indicates the vacuum value at the inlet section of the water pump. It was measured by stopping the experiment under normal atmospheric pressure and a water temperature of 20 degrees Celsius. It does not think about the flow of water after the suction pipe is matched. The height of the pump unit should be the local value remaining after allowing the vacuum height to be deducted after the loss of the suction line of the suction pipe. The height of the pump unit cannot exceed the calculated value. Otherwise, the water pump will not pump up.
4. The impact of the calculated value is the head -loss due to pipe resistance of the suction pipe. Therefore, it is advisable to adopt the shortest piping arrangement and install the elbow fittings as much as possible. It is also conceivable to appropriately arrange the pipes with some calibers to reduce the flow rate in the pipes.
Post time: Aug-10-2015