Model HPT - High Pressure Barrel Casing Pumps
From Pumps and Systems - Barrel Casing Pumps
The HPT is a pump specifically designed for boiler feed applications in thermal power stations. The pumps are optimized to provide high-efficiency operation over an extended period of time, thus reducing operating and maintenance costs.
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Main Benefits:
- Maximum safety due to double casing design. Pipework connections remain undisturbed during disassembly
- High-strength barrel material to resist thermal shock
- Full cartridge pull-out for rapid changeover
- Design features that eliminate the need for pre-warming in most installationsLong operating life regardless of the operating mode
Main Applications:
- Main boiler feed in thermal power stations
Main Design Features
- Barrel design incorporates many design features resulting from Sulzer/EPRI research contract
- Axial thrust compensation by balance piston to avoid damage during transient conditions
- Fully rated double-acting tilting pad thrust bearing
- Radial grooves for increased radial stiffness, reduced effect on rotor tilting, and good rotor dynamic behavior
- Swirl break at balance piston to maintain rotor stability, even when the running clearances are worn
Key Characteristics:
- Capacities: Up to 4,000 m3/h / 17,600 US gpm
- Heads: Up to 4,200 m / 13,800 ft
- Pressures: Up to 450 bar / 6,530 psi
- Temperatures: Up to 220°C / 430°F
- Discharge sizes: Up to 500 mm / 20 inches
- Maximum speed of rotation: 6,750 rpm
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