Fire Pump Vacuum Stabilizing Tank Technology

During the production and development of fire pumps, extensive technologies from domestic enterprises have been incorporated into their design. As operational and management requirements evolve, an increasing number of technologies are being applied to social production. This has enhanced the performance of fire pumps, shortened production cycles, and added numerous diverse functionalities. For fire pump automatic inspection cabinets with volute pumps, the centerline of the impeller outlet—specifically the centerline of the impeller outlet width—should align with the centerline of the volute inlet. If misalignment occurs, adjust by inserting shims between the impeller hub and shaft shoulder. Maintain both centerlines within a 0.5 mm tolerance range. For pumps with high specific speed, minor deviations have negligible impact on performance. However, for medium-to-low specific speed pumps with narrow impeller outlets (e.g., 10 mm width), a 1 mm deviation from the volute centerline significantly affects pump performance. After adjustment, it is recommended to control the deviation between the two centerlines (impeller and volute) within 5% of the impeller outlet width. Diesel-powered fire pumps are categorized into different types based on various classification methods. With their fully sealed, leak-free, and corrosion-resistant characteristics, they are widely used in environmental protection, water treatment, firefighting, and other sectors for pumping various liquids. They are ideal pumps for creating leak-free, pollution-free workshops and factories. The pump types used in firefighting systems are similar, differing only in head and flow rate. Firefighting gas pressure boosting equipment is categorized into different types based on various classification methods. With its fully sealed, leak-free, and corrosion-resistant characteristics, it is widely used in environmental protection, water treatment, firefighting, and other sectors for pumping various liquids. It is an ideal pump for creating leak-free, pollution-free workshops and factories. The pump types used in firefighting systems are similar, differing only in head and flow rate. Among these, non-negative pressure flow tank technology has been widely applied in pump production. The following details the technical aspects:

Setting a Constant Pressure Value

1. Fire Pump System. If the pipeline network pressure exceeds the set value, the pressure transmitter feeds back the network pressure to the variable frequency control cabinet. Municipal water can then be supplied directly to the user network via the direct supply pipeline. When municipal network pressure fluctuates or user network water consumption changes, the pressure transmitter feeds back the network pressure to the PLD controller within the variable frequency control cabinet...

2. Fire pump variable frequency non-vacuum equipment utilizing computer technology and high-efficiency vacuum treatment technology for stacked pressure water supply. This device achieves direct connection to the water network via a vacuum compensation system, vortex chamber, and a series of fully enclosed structures, overcoming adverse pipeline network effects.

3. Fire pump equipment collects vacuum level and water level signals from the steady-flow tank through detection devices in the system pipeline pressure gauge, vacuum suppressor, and steady-flow compensator, providing real-time feedback. Utilizing a microcomputer management control system, vacuum suppressors and specialized protection devices within the steady-flow compensator suppress negative pressure, ensuring the steady-flow tank eliminates vacuum conditions. The development of this equipment will not significantly impact China's urban pipeline network infrastructure. When municipal pipelines cease water supply, the pump units continue operation until the steady-flow tank pressure drops to the lower limit set by the electrical contact point, then automatically stop and restart upon water restoration. During power outages, the pump units cease operation. Water supply companies can then access the user pipeline network via bypass pipelines. Upon power restoration, the units automatically restart to resume normal water supply.

Negative-pressure-free steady-flow tank technology requires fire pumps to set pressure values and feed them back to the control cabinet, ensuring stable water supply. Even during water outages, this does not affect pump operation, making it particularly suitable for applications with higher pump performance requirements.