When installing the vertical multi-stage centrifugal pump, if it is not debugged well in the early stage, it will affect the working performance in the future. Next, we will share the details and matters needing attention in the installation process of the vertical centrifugal pump.
If there are many elbows used on the water inlet pipeline, some water flow resistance will be added, and the elbow should turn in the straight direction, and it is not allowed to turn in the horizontal direction to avoid air collection. When installing the water inlet pipeline, the horizontal section is horizontal or upward, which will collect air in the water inlet pipe, reduce the vacuum degree of the water pipe and the pump, and reduce the suction head of the pump and the water output.
The correct method is to slightly skew the horizontal section towards the water source, not to be horizontal or upward. The vertical multi-stage centrifugal pump inlet is directly connected with the elbow, which will cause uneven distribution of water when it enters the impeller through the elbow.
When the diameter of the water inlet pipe is larger than the water inlet of the pump, a deflection reducer pipe should be installed. Some deflection reducers should be installed on the top of the plane and some on the bottom of the slope. Otherwise, air will be collected, water output will be reduced or cannot be pumped, and there will be a crash sound.
If the diameter of the inlet pipe and the water inlet of the water pump is equal, a straight pipe should be added between the inlet and the elbow of the vertical multi-stage centrifugal pump. The length of the straight pipe should not be less than two to three times the diameter of the water pipe. If the outlet is above the normal water level of the outlet pool, although the pump head is added, the flow is reduced.
Dry vacuum pump system for Vacuum Degassing of steelmaking