System and method for starting, synchronizing and operating a steam turbine with digital computer control
Patent 4267458 Issued on May 12, 1981. Estimated Expiration Date: 
May 12, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 12, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3325650 3446224 3552872 3561216 3564273 3588265 3623324 3643437 3741246 InventorAssigneeApplicationNo. 05/408962 filed on 10/23/1973US Classes:290/40R, Engine control415/1, METHOD OF OPERATION60/646, Including start up, shut down, cleaning, protective or maintenance procedure60/657, Having apparatus cleaning, sealing, lubricating, purging, standby, or protecting feature60/660, Having condition responsive control700/290For turbine speed controlExaminersPrimary: Rubinson, Gene Z.Assistant: Redman, John W. Attorney, Agent or FirmInternational ClassesF01K 13/00 (20060101)F01D 17/00 (20060101) F01D 17/24 (20060101) F01K 13/02 (20060101) AbstractSteam flow and pressure conditions needed in a turbine to satisfy the speed and load demand of an electric power generating system are controlled by a programmed digital computer system during start-up, synchronization and load operation. Manual backup control is provided for the computer control. Throttle valve tests are provided under digital control and transfers are made to manual backup control if predetermined task errors occur. | |
