In some important situations, it is necessary to equip fire pumps to reduce the damage caused by sudden fire. As more and more places need it, at present manufacturers produce several pumps, if in accordance with the series, can be divided into single stage and multistage pump. By comparing these two pumps, we can know the difference between them.
I. Flow rate and head:
The single stage fire pump has the characteristics of large flow and low head; Multistage pump flow is small, high head characteristics.
Two, impeller:
The impeller of the multistage pump is more than the impeller of the single stage fire pump. In the case of the same flow, the multistage pump can achieve a larger head.
3. Price:
In the head, flow are in line with the requirements of the case, the single stage fire pump is similar to the multistage pump, but the single stage is cheaper than the multistage.
Four, pressure and power:
The pressure of the multistage pump is several times higher than that of the single stage, and the power is larger.
Therefore, we should choose the appropriate series according to the occasion, in order to make the fire pump adapt to the environment faster, achieve a greater head, reduce the working pressure of the pump, improve the pump operation power, reduce power consumption.
Because the submersible pump installation needs a lot of accessories. Every detail may determine the later use, in the installation process should be double-checked, no mistakes. So how to do a good job of checking? Here we need to carefully do a good job of each check work.
1. The leveling and alignment of submersible pump should meet the requirements of equipment technology;
2, the size, position, elevation of the foundation should meet the design requirements, anchor bolts need to be properly and correctly fixed in the concrete foundation, the machine should not be missing parts, damage or corrosion;
3. The installation of all the pipes and fittings connected with the submersible pump and the cleaning requirements of the lubricating oil pipeline should meet the regulations;
4. According to the characteristics of the conveying medium, if necessary, the material of the main parts, shaft seals and gaskets should be checked.
Submersible pump installation, need to do a good job in each check work, seriously to check. Check major parts for leaks, missing, etc. Check whether the accessories are installed in correct positions. There are a lot of places we need to check.
Post time: Aug-12-2022