Gas Turbine Exhaust Expansion Joints

gas turbineLBH GTX Expansion Joints are available in a variety of frame designs and fabric materials. All standard designs can be modified to suit most customer requirements. However, LBH will not compromise our basic design philosophy to accomodate a requirement that may reduce the life or safety of the units.

The new revolutionary design solutions introduced with the GTX-range have been achieved through several years of testing, involving intensive use of FEA-calculations (Finite Element Analysis).
There are three standard fabric designs available:

GTX-A: This fabric is used in applications that have no pressure pulses and have fairly smooth flow velocities. The design is typically used on units installed down stream of the turbine, after the diffuser sections where the gas flow characteristics have smoothed.

GTX-B: This is the most commonly used fabric design that will withstand normal pressure pulses and flow conditions. A unit composed of this fabric can be installed e.g. at the bypass outlet sections or after the diffuser sections.

GTX-C: The design is recommended for heavy-duty gas turbine exhaust applications where high pressure pulsations with turbulent flow conditions exist.
Based on the information provided by our customer, the choice of bellows type is generally suggested by LBH.

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