Pressure Vessel Construction (5) Flashcards
Heads
top and bottom of the vessel
Cylindrical shell
Body of the vessel
Skirts/legs
What holds vertical vessels up
Circular weld
weld that cover the circumference/girth are called “circ seams”
Longitudinal Weld
weld that is longitudinal called a “long seam”
Nozzles
pipe stubs welded to the vessel shell
Vessel ID Tag
Lists serial # etc.
Liquid level
part in the vessel where fluids and gasses meet
Tanks
Usually not pressurized
- roofs can be fixed or floating
- welded plates comprise the floor and walls
Pipes
Arteries
- Seamless tubing (extruded, uniform, strong, expensive)
- Seam/ERW/Skelp (circular cross section joined by welds) (electric resistance welds)
Reducers
Allow pipe to change in diameter
Elbows
Change pipe direction 90° or 45°
Tee Connecters
Split pipe into two sections 90° (Y-Connectors)
Flanges
welded to pipe to connect sections or components (manual - bolts, or welded)
Gaskets
used with flanges to prevent leaks
Pumps
Provide force to make product flow
Compressors
Pressurize a fluid or gas
Both compressors and pumps generate what?
heat, pressure change, turbulence, higher flow rate
Valves
direct flow of product (open or closed)
- must effectively seal
Types of manual connections
Bolts, rivets, lock wires, pins, washers, nuts
Snubbers
overhead structural mount that is used to reduce vibration
Restraints
overhead structural mount used to limit movement or restrain loose components if a failure was to occur (like a guard for a fan belt)
