In the world of gas turbine exhaust systems, DEKOMTE has established itself as a leader by delivering over 4,000 expansion joints in the last 20 years. This experience has equipped us with a deep understanding of the unique challenges posed by these systems, particularly in cyclical plant operations. Our innovative solutions have addressed the complex demands of gas turbine exhausts and made DEKOMTE a trusted name in the industry. One of our projects involved installing high-temperature expansion joints for a solar power planet in Morocco, read more here.

It is vital to understand how cyclical plant operations impact expansion joint systems. Gas turbine plants typically operate in cycles, with frequent temperature changes that put stress on the expansion joint materials. Traditional expansion joint systems struggle to handle these variations, especially when it comes to managing the temperature gradients between the hot exhaust casing and the surrounding clamping areas. DEKOMTE has developed specialised products designed to handle these challenges more effectively. The replacement and upgrade of the existing metallic expansion joint with another metal expansion joint would have required a full NDT, splicing in new section of bellow and extremely delicate welding. Alternatively, a fabric expansion joint retrofit boasted multiple advantages. Learn more about this case study here.

One of the key innovations that DEKOMTE offers is a unique frame solution that allows for a high degree of flexibility, addressing the need for thermal expansion while still maintaining gas tightness within the exhaust system. This flexibility is essential in ensuring the system remains secure and functional under the changing conditions in a gas turbine exhaust, where fluctuations in temperature and pressure are constant.

The video also highlights DEKOMTE’s approach to HRSG (Heat Recovery Steam Generator) inlets and systems. In modern designs, particularly with cold casing systems, integration of the expansion joint into the ducting and liner plates is a critical aspect. DEKOMTE ensures that the right insulation is used to avoid gaps that could lead to heat loss or other system inefficiencies. The integration process is key to ensuring that the exhaust system operates smoothly, with no heat escaping from the casing.

In conclusion, DEKOMTE’s focus on understanding the complexities of gas turbine exhaust systems, combined with its innovative design solutions, positions the company as a leader in providing effective expansion joints for these applications. Our expertise in cold casing systems and temperature management continues to support the industry in overcoming the challenges that arise from cyclical plant operations. DEKOMTE’s commitment to innovation and precision makes them a valuable partner in ensuring the reliability and efficiency of gas turbine exhaust systems.