KHIA headerKnow-How in Action

VOL XVI, NO 26

Belzona® Repairs This Vacuum Pump And Increases Its Efficiency

 
 

Industry:

Power (POWR)

 
 

Application:

Mechanical Power Transmission (MPT)

 
 

Customer Location:

Fossil fuel power station in Australia

 
 

Application Date:

November 1993

 
 

Application Situation:

Water ring vacuum pump for main condenser.

 
 

Problem:

Corrosion damage to the end covers and impeller, as well as heavy souring of the gland packing locations on the impeller shaft caused insufficient vacuum pumping and loss of pressure.

 
 

Products:

Belzona® 1131

Belzona® 1341 (Supermetalglide)

 

Substrate:

Cast iron and steel

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflets MPT-1 and CEP-7.

 
 

Belzona Facts:

Customer achieved an increase in efficiency. In particular the end covers were rebuilt with Belzona® 1131 for additional security in service. As the clearances increase between the vanes of the rotor and the end covers, the Belzona® 1131 will prevent hang up, and provide a smooth hydrodynamic surface.

 
 

Photographs Description

  1. Scored area of the shaft
  2. Undercoat area of the damaged shaft
  3. Application of Belzona® 1131
  4. The rebuilt shaft after machining of Belzona® 1131
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com