Views: 12 Author: Site Editor Publish Time: 2017-04-30 Origin: Site
Characteristic of Bellows Designs
Single Ply
Typical Application
* Shell and tube heat exchangers
* Clamshell bellows
* Penetration seals
* HVAC piping
Characteristics
* One ply
* Relatively thick
* Robust
* Higher spring rate
* High lateral stiffness
* Relatively cheap
* Good NDE when installed
* Weld attachment simple
* Weld repair(temporarily) possible
Multi-Ply
Typical Application
* HT& HP steam & process piping
* Equipment connections
* Vibration dampening
Characteristics
* Between 2 and >5 plies
* Individual plies relatively thin
* Total wall thickness = thick
* Extremely flexible in all directions
* Excellent vibration damper
* Very short compared to single ply with similar flexibility
* Leak monitoring possible
* No sudden leaks
Pressure Thrust
Thrust = Bellows Area X Pressure
【Lb.】 【sq.in.】 【psig】
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