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  • 1. Puffing Billy Railway Monitor Injector Sachithra Kahawatta
  • 2.
    • Re-draw all the drawings of the components.
    • Convert Imperial measurements into Metric.
    Objectives of the Project
  • 3. Introduction A monitor injector is used on steam locomotives to inject feed water into the boiler.
  • 4. Monitor Injector The Injector has practically proved it self to be the best means of feeding water into locomotive boilers.
  • 5. Advantages of a monitor injector
    • Low initial cost
    • Simplicity
    • Compactness
    • Thermal efficiency is very high (99%)
  • 6. Monitor Injector Prototype of the Monitor Injector
  • 7. “ No Present, without a History” A Glimpse into the history of Monitor Injectors
  • 8. Invention of the monitor Injector
    • Invented by Henri Giffard
    • Made with the view of devising light machinery
    Henri Giffard (1825-1882)
  • 9. Early forms of Monitor Injectors.
  • 10. The sellers Injector
    • The popular boiler-feeder
    • Self-adjusting
    • Feed automatically
  • 11. NATHAN MFG. CO.'S IMPROVED MONITOR INJECTOR.
    • Constructed with fixed nozzles
  • 12.
    • Steam Cone
    • Combining Cone
    • Delivery Cone
    The Injector consists of three main parts, Working of the Monitor Injector
  • 13. Working of the Monitor Injector
  • 14.  
  • 15.  
  • 16. Uses of an Injector Monitor:
    • Electronic Fuel Injector.
    • 2) Industrial Injectors.
  • 17. Electronic Fuel Injectors Different Types of Fuel Injectors.
  • 18. Industrial Injectors Different Types of Industrial Injectors .
  • 19. Rapid Prototyping
    • Rapid prototyping is the automatic construction of physical objects using solid freeform fabrication.
    • They are used for a much wider range of applications and are even used to manufacture production quality parts in relatively small numbers
  • 20. Rapid Prototyping
  • 21. Imperial vs. METRIC
  • 22. The metric system is easy to use and very accurate
    • Metric system has vast measurement range, like kilo meters to nano meters.
  • 23. Present days most of industries use metric system.
  • 24. CHALLENGES FACED DURING THE PROJECT
  • 25. Insufficient Drawing Details.
    • Insufficient thread details.
    • Insufficient drawings.
  • 26. Some parts were worn out:
    • We faced challenges when we measured the parts.
  • 27. Challenges we faced during dismantling.
  • 28. Challenges continued…
  • 29. Dismantling of the monitor injector
  • 30.  
  • 31.  
  • 32.  
  • 33. The following slides will give you an idea of how we created and designed the parts.
  • 34. Combined cone body
  • 35. The Combined cone body consists of the following components,
  • 36. The drawings that we got…..
  • 37. Lack of details of the nozzle
  • 38. The C oordinate M easuring M achine ( CMM ) was used to measure the internal dimensions of the nozzle.
  • 39.  
  • 40.  
  • 41. The Main Body Monitor Injector
  • 42. Primary Combining cone Water valve
  • 43.  
  • 44. Challenges faced
    • Lack of drawings and details of the inside of the main body.
    • The component and the drawings didn’t coincide.
  • 45. Original Drawings
  • 46.  
  • 47. Challenges faced during the project
  • 48. Primary Combining cone
    • Old Drawing
    • New drawing
  • 49. Secondary Combining cone
    • Old Drawing
    • New Drawing
  • 50.
    • Old Drawing
    • New Drawing
  • 51. Parts List:
  • 52. The next video will give you an overall idea of how the entire Monitor Injector is assembled.
  • 53.