APPLICATION OF THE SÉ 2500-60-11-1 NETWORK PUMP
The network pump belongs to a special group of energy pumps. Its main feature is the ability to operate under significant fluctuations in the temperature of the supplied water and a wide range of flow rates. The pump is designed for pumping water at temperatures up to 158 °C in district heating networks.
TECHNICAL SPECIFICATIONS
| Parameter |
Value |
| Flow Rate |
2500 m³/h |
| Head |
60 m |
| Allowable Cavitation Margin |
12 m |
| Pump Efficiency |
87 % |
| Water Temperature |
10–180 °C |
| Rotational Speed |
1500 rpm |
| Motor Power |
630 kW |
| Pump Weight |
3875 kg |
| Unit Weight |
7210 kg |
| Pump Dimensions (W×L×H) |
2200×2130×1585 mm |
| Unit Dimensions (W×L×H) |
2200×3995×2070 mm |
| Overall System Efficiency |
83 % |
The allowable cavitation margin must be considered when designing the piping system and selecting pump equipment.
MAIN REQUIREMENTS FOR PUMP DESIGN
- High reliability and cost-effectiveness
- External tightness and absence of internal leaks at rotor and stator joints
- Mean time to major overhaul: ≥ 40,000 hours
- Dynamic stability across the entire operating range
- Stable, continuously declining head characteristic to ensure reliable operation when pumps are connected in parallel
- Ease of assembly, disassembly, maintenance, and high serviceability in operational conditions
DESIGN FEATURES OF THE SÉ 2500-60-11-1 NETWORK PUMP
- Horizontal layout – provides high vibration resistance, reduces shaft misalignment, and extends service life of components
- Spiral casing with horizontal split along the pump axis – ensures high maintainability and ease of service and installation
- Single-stage pump with double-suction impeller made of two halves
- Pump casing – cast from high-strength cast iron (SCh200), includes semi-spiral inlet and double-spiral outlet channels, cooling chambers for mechanical seals, inlet and outlet nozzles, support feet, and brackets for bearing mounts
- Rotor assembly – consists of shaft, double-suction impeller, bushings, protective bushings, bearings, and half-coupling; axial displacement is compensated by thermal gaps
- Rotor axial load compensation – double-suction impeller design
- Bearings – roller cylindrical radial bearing on the drive side, two single-row angular contact ball bearings on the opposite side; lubricated with ring oil system, with cooling coils for water circulation
- Mechanical seals – gland type with sealing ring, including cooling passages to prevent air ingress
- Torque transmission – via flexible sleeve-pin coupling
MATERIALS
- Pump and bearing housings – cast iron SCh200
- Shaft – heat-treated steel 40X
- Impeller and protective bushings – stainless steel 20X13
- Bushings – carbon steel 40
- Seal rings – stainless steel 30X13
ADDITIONAL OPTIONS
- Mechanical seal – reduces volumetric leakage, increases energy efficiency, and simplifies maintenance
- High-grade materials and coatings – improve erosion resistance of flow parts
- SKF rolling bearings – high precision, low friction, low noise, and reduced heat generation
- Flexible plate coupling – improves vibration characteristics and reliability of the pump unit
- VDS monitoring system – includes sensors for vibration, rotation, and temperature; allows tracking and analysis of pump condition for preventive maintenance
PURCHASE INFORMATION
To order a specific unit or get consultation on selection, contact the sales department via phone or online form. Delivery is available across all CIS countries (except Russia and Belarus) and Europe.
