This inventor holds 1 USPTO granted patent. Top assignee: General Electric Company. Active years: 1981.
Company Filing History:
Years Active: 1981
Title: Innovations of Patrick C Callan in Turbine Control Systems
Introduction
Patrick C Callan is an accomplished inventor based in Schenectady, NY (US). He has made significant contributions to the field of turbine control systems, particularly in the context of sliding or constant pressure boilers. His innovative approach has led to the development of a unique automatic control system that enhances the operation of reheat steam turbines.
Latest Patents
Patrick C Callan holds a patent for a turbine control system designed for sliding or constant pressure boilers. This system enables comprehensive operation of a reheat steam turbine by incorporating an HP control valve that regulates steam flow to the high-pressure turbine based on load and speed demands. Additionally, it features an intercept valve for managing steam flow to the low-pressure turbine and for controlling reheater pressure. The system also includes a bypass flow mechanism to handle excess boiler steam during low loading periods. This bypass system consists of both high-pressure and low-pressure bypass sub-systems, each equipped with flow control valves and provisions for desuperheating the steam. The control system generates a signal indicative of actual load demand (ALD), which is proportional to the product of boiler pressure and main control valve flow demand. From this ALD signal, reference functions are created to control the bypass valves effectively. The intercept valve is directly controlled by the ALD signal, with a regulation factor that is inversely proportional to the minimum allowable reheat pressure. Coordinated valve control is achieved during all principal phases of turbine operation.
Career Highlights
Patrick C Callan has had a notable career at General Electric Company, where he has applied his expertise in turbine control systems. His work has significantly impacted the efficiency and reliability of steam turbine operations.
Collaborations
Throughout his career, Patrick has collaborated with various professionals, including his coworker Markus A Eggenberger. Their joint efforts have contributed to advancements in turbine technology and control systems.
Conclusion
Patrick C Callan's innovative contributions to turbine control systems exemplify the importance of advancements in engineering and technology. His patent reflects a commitment to improving the efficiency of steam turbine operations, showcasing his role as a key inventor in this field.