MEP201 Mechanical Engineering Drawing 1 st semester 2005-2006
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Transcript of MEP201 Mechanical Engineering Drawing 1 st semester 2005-2006
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MEP201 Mechanical Engineering Drawing
1st semester 2005-2006
S R Kale
Lecture
Piping Drawings
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Piping (2005) 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
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Piping (2005) 3
Francis Turbine – Lube Oil Piping (1)
L.O.TANK
BRG
L.O.TANK
BEARING
Z
X
Y
SCHEMATIC
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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
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Piping (2005) 5
Piping Joints
ThreadedAccuracy (?), Metal/plastic. Plumbing
FlangedIndustrial pipes, low/medium pressure and temperature. Metal/Plastic. Steam, oil, water,
WeldedPermanent; High pressure and temperature. Industrial, Water, steam, oil, chemicals,
Water supply, sewage, large hydro - Concrete
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Piping (2005) 6
Piping Joints
Threaded / Flanged / Welded
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Piping (2005) 7
Piping Joints
Threaded / Flanged / Welded
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Piping (2005) 8
Pipe - Flanged connection
PIPE-FLANGEWELDED orSCREWED
PIPE 2
PIPE 1
FLANGE 1
FLANGE 2
GASKET
BOLT-NUT
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Piping (2005) 9
Pipe - Flanged connection
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Piping (2005) 10
Piping Joints
Threaded / Flanged / Welded
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Piping (2005) 11
Piping Joints
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Piping (2005) 12
Piping Bends
Tee (T) Short Radius (SR) Elbow
Long Radius (SR) Elbow
Radius/Pipe dia. ratio
Hydrodynamics.
Space.
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Piping (2005) 13
Piping : Vents, Drains & Supports
Vents : Location, accessibility, outletDrains : Location, accessibility,
collection, funnel,Supports : Anchor/foundation, hanger• Thermal expansion• Pipe weight• Surges, water hammer• Equipment vibrations• Seismic
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Piping (2005) 14
Francis Turbine – Lube Oil Piping (2)
L.O.TANK
BEARING
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Piping (2005) 15
Piping – Plan & Elevation (1)
ISOMETRIC
PLAN
ELEVATION
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Piping (2005) 16
Piping – Plan & Elevation (2)
ISOMETRIC
PLAN
ELEVATION
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Piping (2005) 17
Piping – Plan & Elevation (3)
ISOMETRIC
PLAN
ELEVATION
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Piping (2005) 18
Pipe supportsFoundation
Hanger
Rack
Clamp
Underground – foundation
“Rigid” - anchor vs. “flexible” allows pipe to move
All along pipe length (at regular intervals?)
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Piping (2005) 19
Pipe support - Hanger
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Piping (2005) 20
Piping Examples
Oil pumping station, Central A.C. system,
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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.
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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,