Fire pumps are water pumps used for fire fighting, and they are one type of water pumps. To distinguish the difference between a single-pole fire pump and a multi-stage fire pump, you only need to know the difference between a single-pole pump and a multi-stage pump.
The difference between multi-stage fire pump and single-stage fire pump:
1. There is only one impeller in the pump body of a unipolar pump. Generally speaking, the head of a unipolar pump is 125 meters. Multi-stage pump refers to a pump with two or more impellers. The multi-stage pump can absorb and press water in multiple stages, thereby increasing the head of the pump.
In other words, the main difference in the structure of a single-pole fire pump and a multi-stage fire pump is the number of impellers. Of course, the resulting structure of the multi-stage fire pump is also different. For the effect of the fire pump, the head of the multi-stage fire pump is larger than that of the single-pole fire pump, breaking through the 125-meter head of the single-pole fire pump.
2. The second difference is that the flow curve of the fire pump is relatively smooth, and the head will not increase greatly due to the small flow, which will cause the pressure of the fire hydrant outlet to exceed the limit.
3. Multi-stage fire pumps can be classified as multi-stage pumps.
4. We can classify a single-stage fire pump as a single-stage pump.
5. We can classify it as a pipeline centrifugal pump regardless of whether it is a multi-stage fire pump or a single-stage fire pump.
6. Due to the differences in the structure and head of single-pole fire pumps and multi-stage fire pumps, the prices of single-pole fire pumps and multi-stage fire pumps are also different. Generally speaking, multi-stage fire pumps are better than single-pole fire pumps. The unit price of the pump is higher. In practical applications, it is necessary to consider whether to choose a single-pole fire pump or a multi-stage fire pump based on comprehensive factors such as head requirements and pump room area.