Electric High-flow Double-suction Pump

The electric high-flow double-suction pump belongs to the S-type / SH-type / SA-type single-stage double-suction split-case centrifugal pump. The pump body is horizontally split and the impeller is double-suction (the liquid enters the impeller from both sides simultaneously). "Electric" means that the power end is driven directly by an electric motor (instead of a diesel engine). It is the main model for municipal water supply, power plant circulation, large irrigation areas, etc. in scenarios where "there is a stable power grid and continuous large water transportation is required 24 hours a day".

Guarantee for large flow and high head of double-suction impellers
The impeller has a symmetrical structure at both ends. The liquid flows in from both sides into the impeller. With the same impeller outer diameter, the flow rate can be doubled! The large diameter of the impeller, with special anti-cavitation materials on the surface, improves efficiency and has a high head.
Symmetrical structure operates stably
Installation and layout of inlet and outlet pipes
The pump casing is horizontally split in the middle, with the inlet and outlet in the same direction and perpendicular to the pump shaft, which is conducive to the operation of the pump.

Self-balancing axial force of double-suction impeller: The liquid enters from both sides of the impeller simultaneously, and the axial thrust is almost completely cancelled out. The pump shaft is evenly stressed, the bearing life is long, the running vibration is small, the noise is low, and it is suitable for 24-hour continuous operation in municipal/thermal power plant scenarios.
Electric drive, operating cost is much lower than that of diesel engine: Over the long term, the price of electricity is 3 to 5 times lower than that of diesel. The electric model is more suitable for the perennial operation of fixed pump houses; and the motor can be equipped with a frequency converter (VFD), which can adjust the rotational speed in real time according to the pipeline pressure or water consumption, avoiding "a large horse pulling a small cart", and saving 15% to 30% energy.
Horizontal mid-span structure, no need to dismantle the pipeline for maintenance: The pump body is horizontally divided along the axis line. By opening the upper cover, the rotor (impeller + shaft + bearing) can be removed. The inlet and outlet pipelines and the motor remain in place, and the maintenance downtime is shortened by more than 60% compared to the end suction pump - very friendly to the operation rhythm of water plants that "cannot stop for a moment".

Municipal waterworks: The pumping station (for water extraction from rivers, lakes or reservoirs) and the booster pumping station (pressurizing the clear water reservoir and feeding it into the urban water supply network) are the main components of the first/second-level pumping stations of the waterworks. After being equipped with variable frequency drives for high-flow electric models, they can automatically adjust the pressure and flow according to the peak and off-peak periods of urban water usage, achieving significant energy savings.
Circulating water for power plants: Circulating water pumping stations for thermal power plants, nuclear power plants, and waste incineration power plants require a flow rate of several thousand cubic meters per hour and a head of 20 to 50 meters to supply water to cooling towers or condensers. Double-suction pumps are the industry standard, and large models such as 48SH-22 are specifically used for thermal power plant circulating pumps.
Large-scale irrigation for farmland and cross-regional water transfer: Large irrigation areas transfer water from main canals to branch canals for distribution, or intermediate pumping stations in cross-regional water transfer projects. Electric high-flow double-suction pumps in a single stage can meet the requirements, which is simpler and more reliable than multi-stage pump series systems.
HVAC air conditioning circulation / regional energy: Freezing water/cooling water circulation for large commercial complexes, office buildings, data centers, regional heating/cooling stations can be selected as vertical double-suction models (such as the Grunwell LSV type) to save floor space and operate with variable frequency matching load changes.

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