Measuring Dynamic Pressure Pulsations in Gas Turbine DLN Applications
Dry Low NOx (DLN) Combustors designed to meet today's stringent emissions regulations must operate at very lean fuel-to-air ratios to meet single-digit NOx limits. Operation at fuel/air ratios close to the lean flammability limit makes DLN combustors prone to dynamic pressure oscillations that can lead to accelerated wear and mechanical distress, a flashback of the flame into the pre-mixer, or lean blow out trips. Regular tuning of these systems is required to ensure compliance with emission regulations and long-term component integrity.
TTS’s CMS-1000 Combustor Dynamic Monitoring System is tailored explicitly for measuring dynamic pressure pulsations in gas turbine DLN style applications. Hardware configuration and setup are simple, and the software is user-friendly and provides data in formats that DLN tuners and operators need to optimize DLN operation quickly. This system can is available in portable and permanently installed systems.
Portable Systems
- Economical option for operators with multi-unit tuning requirements
- Compact, rugged, simple to assemble
- Data acquisition hardware, piezoelectric sensors, dampening coils, and purge valves are neatly integrated into two aluminum, diamond-plate tuning boxes
- Easy-to-use software
- Ethernet-based communication between system components simplifies system interconnection and setup.
- Automatic scaling of output to compensate for length of pressure sensing lines
- Display screens and data logging features designed to simplify manual tuning
- Can be configured for remote tuning applications
- System can handle up to 18 channels
Permanently Installed Systems
- Ideal for operators interested in continuous dynamic monitoring to optimize
- DLN operation throughout the combustor maintenance cycle and in response to seasonal variations.
- High Temperature Sensor option for most accurate amplitude resolution; no purging of sensing lines required
- Low Temperature Sensor option with automatic purge system – more economical alternative
- User-specified alarm capability to alert operators to potentially harmful dynamic amplitude levels
- Data import/export options to merge and correlate dynamics with turbine operating parameters and emissions data
- Built-in historical logging and trending features to simplify troubleshooting
- Can be configured for remote monitoring and tuning applications