APPLICATION OF PE 150-63 FEEDWATER PUMP
This is a special type of booster pump that supplies superheated water to stationary boilers of TPP power units, as well as waste-heat boilers of power plants with combined cycle and steam-power installations with operating pressure up to 6.2 MPa (63 kgf/cm²). Maximum flow 150 m³/h and head – 700 m.
It is also very important to consider that the allowable NPSH for this pump is 5 m. Therefore, when designing the supply system or selecting equipment, this important parameter must be taken into account.
MAIN REQUIREMENTS FOR THE DESIGN OF FEEDWATER PUMPS FOR STEAM BOILERS PE 150-63:
- high reliability and cost-effectiveness;
- ensuring free thermal expansion of stator and rotor elements without disturbing their mutual alignment and the alignment of the pump with the drive;
- external tightness and absence of internal leaks at rotor and stator joints;
- long service life — 15,000–30,000 hours (if all maintenance rules are followed);
- protection against backflow of feedwater;
- dynamic stability across the full range of operating modes;
- stable continuously declining head characteristic;
- ease of assembly, disassembly, maintenance, and high repairability in operational conditions.
The PE 150-63 feedwater pump belongs to hydraulic machines with relatively low power. The nominal power of the drive used with it should be within 500 kW, equivalent to an electric motor.
In domestic and foreign energy, turbine drives are predominantly used for powerful feedwater pumps (N>8,000 kW), providing a range of operational advantages. Such pumps are mainly used in power units with capacity of 300 MW and above. In power units up to 200 MW, feedwater pumps with electric drive are most widely used.
The drive for the PE 150-63 feedwater pump is most often an electric drive in the form of an asynchronous motor controlled by a frequency converter. Nominal pump speed – 2980 rpm. Overall system efficiency (COP) – 71%.
CONSTRUCTION FEATURES OF PE 150-63 FEEDWATER PUMP
- Single-Casing Sectional Multistage Design: The PE 150-63 pump features a single-casing sectional multistage design, providing high efficiency and reliability in operation.
- External Sliding Bearings: Using external sliding bearings as supports improves pump stability and reliability. These bearings reduce wear and extend maintenance intervals.
- Thermal Expansion Compensation: The hydraulic machine components are designed to effectively compensate thermal expansion of feedwater during operation, increasing efficiency and reliability at different temperatures.
- “Flexible Shaft” Rotor: The pump rotor is equipped with a so-called “flexible shaft,” with a diameter-to-length ratio of 1:20. This feature requires high technological precision and strict quality control, ensuring rotor strength and durability.
- Hydraulic Thrust Bearing: Axial force of the pump unit is unloaded using a hydraulic thrust bearing — a universal, coordinated mechanism. It effectively compensates axial force evenly and reliably across all operating conditions.
SIZE AND WEIGHT OF PE 150-63 PUMP
The PE 150-63 feedwater pump belongs to low-capacity pumps, so it has relatively small size and weight. Pump weight alone — 1765 kg. Total unit weight — 4800 kg. Overall dimensions of the assembled unit — 2125 × 960 × 1000 mm.
MATERIAL EXECUTION OF PE 150-63 PUMPS BY CHT SLOVAKIA s.r.o.
The design of PE 150-63 pumps uses high-quality materials to ensure reliability and durability. Main components, such as casing, cover, sections, units, and bearings, are made of cast iron grade СЧ20 according to GOST 1412, ensuring excellent strength and corrosion resistance. The pump shaft is made of thermally treated steel 40X, ensuring high strength and wear resistance. Impellers are made of 25L material or stainless steel 20X13, providing efficiency and durability even in aggressive environments. These materials are selected to maximize performance and reliability of PE 150-63 pumps.
ADDITIONAL SUPPLY OPTIONS FOR PE 150-63 PUMP BY CHT SLOVAKIA s.r.o.
- Mechanical Seals: PE 150-63 pumps can be equipped with mechanical seals replacing traditional gland packing. This significantly simplifies operation, increases reliability, and reduces volumetric leaks, important for maintaining system efficiency.
- Bearings in Pumped Medium: Bearings operating directly in the pumped medium simplify maintenance. They also reduce material consumption and extend service intervals, increasing economic efficiency.
- VDS Monitoring System: The pump can be equipped with a VDS monitoring system including vibration, axial displacement, speed, and temperature sensors. This allows collection, analysis, and storage of pump condition data, ensuring timely detection of potential issues and planning maintenance.
- Flow Part Made of Carbon Steel with Anti-Corrosion Overlay: To increase reliability, the pump stator flow part may be made of carbon steel with anti-corrosion overlay in critical areas. Rotor is made of stainless steel, providing high resistance to corrosion and wear, extending pump service life.
BUY PE 150-63 FEEDWATER PUMP FROM THE MANUFACTURER
To order the pump or get consultation on selection, you can contact our sales department managers by phone on the website or submit a request via the feedback form. We will contact you as soon as possible.
We deliver products to all countries of the former CIS (except Russia and Belarus) and Europe. Packaging and installation dimensions of pumps can be obtained from managers. All pumps are packed and assembled for maximum convenience during transportation by road or rail.
