Page 5 - Exlar - Electric servo actuators for process control

POWER

In all power plant types, there is a continuing need for the upgrading of existing final control
elements. In many cases installed damper, valve and actuator designs are not able to provide
the reliable performance or precise control required for plant operation. Exlar’s actuation

technology is designed for various power plant valve applications that offer significant cost
savings related to extended life and improved control.

Gas Turbines Dampers
Industrial gas turbine packages must deliver As clean air regulations become more stringent,
efficient and dependable performance with low many plants rely upon low-NOx burners within
operating and maintenance costs in order to their boilers. These burners depend upon
compete in today’s global market place. Exlar accurate control of the combustion air to
actuators offer several advantages. achieve the required NOx reduction. Controlling
combustion air is achieved through precise
• Fuel Control Valve — The use of electric
actuated fuel control valves on skids can control of multiple dampers. Many older units
eliminate the need for an air compressor. operate with damper drives that are not
responsive to small input changes. Exlar has the
• Inlet Guide Vanes — For gas turbines with capability of controlling dampers with extreme
variable guide vanes, Exlar actuators provide precision in a very robust package reducing
superior performance to other technologies. maintenance by 90% compared to other
Precise positioning and feedback provides the technologies.
ability to fine-tune injector airflow to maintain
CO and NOx emissions. In addition to secondary air dampers, Exlar is
also an excellent choice for ID and FD dampers,
• Bleed Valve — High accuracy and speed burner tilts, scrubber dampers, and flop gates.
make Exlar servo electric actuators an
excellent choice for your variable air bleed
valves and inlet bleed heat valves.

EXLAR Process Industry Technology 5