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Features of SH-type split-case pumps
Features of SH-type split-case pumps
SH-type split-case pump This is a type that’s widely used and highly reliable in power plants. Its core features are particularly well-suited to the needs of power plant operations. Below, we’ll break it down in detail—each feature offers practical advantages:
First, the structural design is exceptionally user-friendly and makes maintenance particularly convenient. It features a horizontal, single-stage, double-suction configuration. Most importantly, the pump casing can be split horizontally along its centerline, and both the suction and discharge ports are located below the pump shaft’s centerline. During routine maintenance, there’s no need to disconnect the inlet and outlet pipelines or move the motor—simply open the pump cover to directly access and inspect internal components such as the impeller and bearings. This significantly reduces downtime for maintenance, making it especially well-suited for power plant equipment that requires continuous operation and cannot afford prolonged shutdowns, thereby minimizing losses caused by unplanned outages.
Second, the conveying performance is precisely tailored to meet the needs of power plants. It’s primarily used for transporting clear water or impurity-free liquids with properties similar to water. The maximum allowable liquid temperature does not exceed 80℃, making it an ideal match for the core applications in power plant water supply and drainage as well as circulating water systems. Moreover, there are models specifically designed for thermal power plants, offering highly targeted solutions that can be quickly put into operation without any additional adjustments—maximizing their adaptability.
Third, this pump offers a wide range of flow and head capabilities, making it suitable for power plants of all sizes. Whether it’s a small or large-scale power plant, this pump can handle the job—its flow rate ranges from 110 cubic meters per hour to 12,500 cubic meters per hour, and its head ranges from 10.6 meters to 140 meters. There’s no need to switch pump models as the scale of the power plant changes; one single pump can adapt to multiple operating conditions, thereby reducing procurement and replacement costs.
Fourth, it boasts stable operation and energy efficiency, making it more cost-effective for long-term use. The double-suction impeller, featuring an optimized design and precision casting, minimizes axial forces. Paired with high-quality SKF or NSK bearings, it delivers low vibration and minimal noise during operation, while also ensuring 8,000 hours of stable performance with no significant leakage—fully capable of withstanding the rigorous test of prolonged, continuous operation in power plants. Additionally, it employs an advanced hydraulic model, resulting in significantly higher operational efficiency compared to conventional pump types, with lower specific energy consumption. Long-term use can lead to substantial savings on electricity costs.
Fifth, it boasts strong adaptability and can meet a variety of special requirements in power plants. The shaft seal is available in two types: mechanical seal and packing seal. The default material is cast iron; however, at the power plant’s request, we can customize seals made from corrosion-resistant and wear-resistant materials such as stainless steel to handle special operating conditions involving mild corrosion and high silt content. Additionally, the rotation direction can be flexibly adjusted to accommodate complex on-site installation layouts in power plants. Coupled with the equipped double-suction sealing ring, this design minimizes water leakage, further enhancing operational efficiency and extending the pump’s service life.
Of course, power plants will also select other pumps depending on the specific scenario—for example, for... Feedwater pump for boiler pressurization Condensate pumps are used to pump condensate from condensing steam turbines. However, in terms of versatility, practicality, and ease of operation and maintenance, the SH-type split-case pump truly stands out—this is precisely why it’s widely adopted in power plants.
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