Boiler Feed Pumps by Bharat Heavy Electricals Limited

• Utility thermal power station
• Combined cycle power plant

• Barrel / ring section construction
• Full cartridge design
• No warm-up required for standby pumps
• Stiff shaft design
• 40,000 hours and erosion free life of first stage impeller
• Balancing drum
• Tilting pad type thrust bearing
• Cartridge type mechanical seals

• Direct driven pumps at constant speed operation for captive power plants and the smaller utility sets of 60 MW and 110 MW.
• Constant speed pumps driven through a set-up gearbox for higher rating captive plant and combined cycle plants.
• Variable speed operation of pumps using

• Hydraulic coupling
• Drive turbine
• Variable frequency drive

200 KHI-S Boiler Feed pump 

Salient features:

• Cartridge Design – for easy maintainability

To complete the pump assembly using this inside stator, it involves extensive work of assembling the balance components like HP cover, LP cover, Mechanical seals, Bearing housings, Journal and thrust bearings and accurate centering of the Rotor which is a skilled and time consuming job, taking about 6 to 8 shifts for the re-assemble at site.

• Higher efficiency – for lower energy consumption costs

Upgraded design cartridge assembly fitted with high-efficiency hydraulic components result in lower power consumption by the pump, thereby saving valuable energy resource and cutting down operational costs.

• Balance Drum design – for increased reliability of operation

The present design pump internals are with balance disc arrangement, which works with an axial gap for hydraulic balance of axial thrust, which has an inherent risk of seizure during initial start and transient operating conditions. 

• Hydraulic stud tensioning – for lower assembly time