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MEP201 Mechanical Engineering Drawing 1 st semester 2005-2006

MEP201 Mechanical Engineering Drawing 1 st semester 2005-2006. S R Kale Lecture. Piping Drawings. Piping drawings. Pre-requisites Schematic, P&I drawings Equipment G.A. drawings Layout drawings Restrictions Space (X, Y, Z), movement Piping outputs B.O.M. for piping fabricator

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MEP201 Mechanical Engineering Drawing 1 st semester 2005-2006

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  1. MEP201Mechanical Engineering Drawing1st semester 2005-2006 S R Kale Lecture Piping Drawings

  2. Piping drawings Pre-requisites • Schematic, P&I drawings • Equipment G.A. drawings • Layout drawings Restrictions • Space (X, Y, Z), movement Piping outputs • B.O.M. for piping fabricator • Hangers, anchors/foundations, trenches Piping (2005)

  3. L.O. TANK BEARING Z Y X Francis Turbine – Lube Oil Piping (1) BRG SCHEMATIC L.O. TANK Piping (2005)

  4. Information Requirements • Position of each equipment (L.O. tank, Bearing block, pump : floor plans, elevations) • G.A. drawing of each equipment (type, size & position of piping connections) • Civil requirements (beams & columns, walkway, maintenance) • Electrical requirements (panels, cable trenches) • Other pipes in the area Piping (2005)

  5. Piping Joints • Threaded Accuracy (?), Metal/plastic. Plumbing • Flanged Industrial pipes, low/medium pressure and temperature. Metal/Plastic. Steam, oil, water, • Welded Permanent; High pressure and temperature. Industrial, Water, steam, oil, chemicals, Water supply, sewage, large hydro - Concrete Piping (2005)

  6. Piping Joints Threaded / Flanged / Welded Piping (2005)

  7. Piping Joints Threaded / Flanged / Welded Piping (2005)

  8. GASKET FLANGE 1 FLANGE 2 BOLT-NUT PIPE 1 PIPE 2 Pipe - Flanged connection PIPE-FLANGE WELDED or SCREWED Piping (2005)

  9. Pipe - Flanged connection Piping (2005)

  10. Piping Joints Threaded / Flanged / Welded Piping (2005)

  11. Piping Joints Piping (2005)

  12. Piping Bends Tee (T) Short Radius (SR) Elbow Long Radius (SR) Elbow Hydrodynamics. Space. Radius/Pipe dia. ratio Piping (2005)

  13. Piping : Vents, Drains & Supports Vents : Location, accessibility, outlet Drains : Location, accessibility, collection, funnel, Supports : Anchor/foundation, hanger • Thermal expansion • Pipe weight • Surges, water hammer • Equipment vibrations • Seismic Piping (2005)

  14. L.O. TANK BEARING Francis Turbine – Lube Oil Piping (2) Piping (2005)

  15. Piping – Plan & Elevation (1) ISOMETRIC PLAN ELEVATION Piping (2005)

  16. Piping – Plan & Elevation (2) ISOMETRIC PLAN ELEVATION Piping (2005)

  17. Piping – Plan & Elevation (3) PLAN ISOMETRIC ELEVATION Piping (2005)

  18. Pipe supports • Foundation • Hanger • Rack • Clamp • Underground – foundation • “Rigid” - anchor vs. “flexible” allows pipe to move • All along pipe length (at regular intervals?) Piping (2005)

  19. Pipe support - Hanger Piping (2005)

  20. Piping Examples Oil pumping station, Central A.C. system, Piping (2005)

  21. Piping – How things go wrong • Power plant steam turbine – steam pipe under lube oil pipe. • Hostel – drinking water pipe and sewage pipe too close. • Automobile – brake oil leak on alternator. • Pipes running into beams, columns, walls, … • Pipe centerline O.K. (?) but insulation fouls with walls/ceiling. Piping (2005)

  22. Lecture summary Using schematics/P&I diagrams make piping drawings (routing), to scale, with material and other specifications (e.g. standards) NEXT STEP : Piece-wise design and manufacture of pipes, joining details, and their supports, Piping (2005)

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