Industrial gas turbine packages must deliver efficient and dependable performance with low operating and maintenance costs in order compete in today’s global market place.
Industrial gas turbine packages must deliver efficient and dependable performance with low operating and maintenance costs in order compete in today’s global market place. In order to accomplish this goal, manufacturers and retrofitters are turning to all electric servo solutions for their actuator needs, eliminating the need for pumps and tubing normally associated with hydro- mechanical or pneumatic designs. Exlar Corporation is a worldwide leader in the design and manufacture of industrial electric servo actuators.
Fuel Control Valve: The use of electric actuated fuel control valves on gas turbines can replace pressure regulator/gas loaders, throttle valves, and associated electrohydraulic actuators. Exlar’s servo electric actuators integrate a high performance servo motor and a specially designed roller screw mechanism for converting electric motor power into linear motion. The roller screw, which consists of multiple threaded helical rollers assembled in a planetary arrangement around a threaded shaft, is capable of carrying heavy loads for thousands of hours even in very arduous conditions. This, combined with high torque servo motor technology, provides a compact and powerful linear actuator solution for fuel valves.
Each Exlar actuator, when supplied with Exlar’s all digital positioner, will respond to command signal changes in less than 5 mSec. The speed of the response combined with the dynamic capability of the all-electric actuator delivers repeatability much greater than typical pneumatic or hydraulic cylinders and allows for end-to-end travel time of a 6 inch stroke actuator of less than 200 mSec. This performance makes Exlar’s actuators the obvious choice for applications such as turbine controls.