Non-Metallic Brush Seal in Heavy Duty GT Units, GE-Made Frame No 7 Model EA
This Paper describes design, fabrication, installation and operational experience with non-metallic brush seals installed in all four GT Units, GE-made, Frame No 7, model EA, presently operating at Watson Cogeneration Company, Carson, California, USA. First non-metallic brush seal was installed early 2002 and is currently in operation. Non-metallic brush seal serves in particular application to reduce the leakage of lubrication oil into the axial compressor suction. At the time of installation, it was the first application , to author’s knowledge, where the non-metallic bristle brush seal was used in heavy duty industrial gas turbine. Non-metallic brush seal can be successfully used where the local temperatures and pressures allow their safe usage. Compressor bearing number one is close to its suction where the air temperatures are low enough to enable the usage of non-metallic bristles which in turn are the core of the brush seals.
Ingistov, Steve (2007). Non-Metallic Brush Seal in Heavy Duty GT Units, GE-Made Frame No 7 Model EA. Texas A&M University. Turbomachinery Laboratories. Available electronically from