Metal Expansion Joints - ThomasNet

14
High Temperatures
High Pressure and Vibration
Engineered Solutions
Metal Exhaust Expansion Joints are designed
for diesel and gas engines to absorb vibrations,
axial, lateral and angular movements or
any combination of these.
Bredan ® UM-Types are installed on the engine before
the turbo charger where high temperatures, vibrations
and pressure impulses occur. UM-Types of
metal expansion joints can be designed for service
temperatures up to 1472 O F (800 O C) and/or pressure
up to 174 PSIG (12 Barg).
The bellows, the flexible component of the expansion
joint, is a multi-layer construction with thinlayers
of heat resistant stainless steel.
Bellows materials include:
• Austenitic steel
• Incoloys
• Inconels
• Hastelloys
• Titanium
• Other formable materials
Engine exhaust joints absorb all types of movement
and vibration
Exhaust Joints for Engines
and Gas Turbine Systems
The expansion joint provides superior flexibility and
is corrosion resistant in the aggressive exhaust gas
application.
Bredan Metal Expansion Joints for engines
are installed in:
• Turbocharger Exhaust Inlet
• Turbo Charger Air Outlet
• Exhaust Receiver
• Turbocharger Bypass
• Single Pipe or Pulse
• Exhaust Manifold
• Engine Exhaust Line
• Vehicles Exhaust Line
• Generator Sets Exhaust Line
Metal expansion joint for gas turbine
exhaust systems are predominantly used as a
pressure vessel. The expansion joint can withstand
very high pressures while still absorbing thermal
growth.
These joints typically see a similar temperature to
the internal duct temperature; this reduces or eliminates
the thermal stress. Metal expansion joints
are able to withstand extremely high temperatures
and fast ramp rates without the thermal stress that
causes yielding.
When specifying expansion joints for gas turbines,
stainless steel 321 is recommended for the bellows
and stainless steel 321 or 347 for the connecting
hardware. 321 and 347 are stabilized with titanium
and columbium respectively.
Liner thickness and design should be determined
based on flow conditions and turbulence correction
factors. EagleBurgmann EJS uses liner stiffeners
welded to the liner and internal ducting.
Metal joints for engines designed for high temperatures Expansion joint installed on a gas turbine exhuast