Rotary Regenerative Air Preheaters especially of the Ljungstrom design play a very important role in improving the fuel efficiency of the modern thermal power plants and furnaces in the process industries. Approximately for every 20 deg C drop in the flue gas temperature in air heaters the fuel efficiency of the steam generator goes up by about 1%.This results in very high fuel savings. Further there is a considerable reduction in auxiliary power consumption if the heaters are kept well maintained. The cost of spares is recovered in a few months of operation.

Lungstrom heaters also find application in Gas-Gas heat transfer duty in flue gas desulphurisation process with corrosion resistant and special materials.

Hariharan Power Engineering provides a complete range of spares for Regenerative Airheaters from seals to bearing assemblies for any make and size of Airheaters for both Gas -Air and Gas - Gas applications at the most economical price with high quality, meeting the timely requirements of customers. Our technical team having more than four decades of experience can offer suggestions for modifications and improvements to enhance steam generator fuel efficiency, to reduce airheater leakage and to achieve high reliability in operation.
    1. Rotor Assembly :

  • Diaphragm plate
  • Stay plate
  • Guide Trunnion bolts
  • Support Trunnion bolts
  • Shell plate
  • Rotor Angle
  • T-Bar

  • 2.Seals :

  • Rotor Post Seals
  • Radial Seals – Hot End and Cold End
  • Axial Seals – Hot End and Cold End
  • By pass seals – Hot End and Cold End

  • 3.Housing :

  • Main Pedestal
  • Side Pedestal
  • Rotor Drive panel
  • Housing panel

  • 4. Connecting Plate Assembly :

  • Hot End connecting panel
  • Cold End connecting plate
  • Hot End main centre section
  • Cold End main centre section
  • By pass seal angle.
  • Hot end static spool assembly
  • Hot end tracking spool assembly
  • Hot end stationary spool seal ring assembly
  • Inboard packing retainer assembly
  • Cold end static spool assembly

  • 5. Sector plate assembly :

  • Hot End Sector plate
  • Cold End sector plate
  • Static seals – Hot End and Cold End
  • Sector plate adjustor assembly
  • Inboard tracking rod assembly
  • Outboard adjustor rod assembly

  • 6. Axial Seal Plate Assembly:

  • Hot End Axial Seal plate
  • Cold End Axial seal plate
  • Axial seal plate static seals
  • Adjustor rod assembly

    7. Guide Bearing Assembly:

  • Guide bearing housing
  • Housing sleeve
  • Guide Trunnion shaft
  • Guide Trunnion Sleeve
  • Adaptor sleeve
  • Guide bearing with lock nut
  • Guide bearing air seal assembly

  • 8. Support Bearing Assembly:

  • Support bearing housing
  • Support Trunnion Support Trunnion shaft
  • Adaptor Plate
  • Support bearing housing bolts
  • Support bearing
  • Support bearing housing cover
  • Water shield assembly
  • Support Bearing Air sealing assembly

  • 9. Rotor Drive:

  • Pin rack assembly
  • Pin rack pins
  • Gear Box assembly
  • Air motor
  • Fluid coupling
  • Bibby coupling
  • Oil seals
  • Over running clutch

  • 10.Oil Circulating System:

  • Soot blower assembly
  • Soot blower nozzle
  • Gear box

  • 11. Cleaning Device

  • Soot blower assembly
  • Soot blower nozzle
  • Gear box

  • 12. Wash Pipe and Deluge Assembly :

  • Wash pipe assembly
  • Deluge pipe assembly
  • Wash pipe nozzle
  • Strainer