A digital speed control system and method for a gas turbine

Abstract

The invention discloses a gas turbine digital type rotating speed control system and method. The system comprises a booster pump, the booster pump is connected with a gear pump through a pipeline, thegear pump is connected with an output shaft of a motor, the lower end of the gear pump is provided with a fuel metering device, the fuel metering device is connected with a stepping motor, an oil outlet of the fuel metering device is connected with an oil inlet of a fuel distributor through two pipelines, two oil outlets of the fuel oil distributor are connected with a first nozzle and a second nozzle, an outlet of the first nozzle and an outlet of the second nozzle are connected with a gas turbine, the gas turbine is connected with a motor, a power turbine sensor is arranged on the gas turbine, the power turbine sensor is connected with an electronic control cabinet through a data conversion device, through closed-loop control, the rotating speed of the gas turbine can be accurately adjusted in time, and safety and reliability of the fuel oil control system can be improved; the control precision of the gas turbine is improved, the performance potential of the gas turbine can be fullyexerted, and the use efficiency of the gas turbine can be improved.

Description

technical field [0001] The invention belongs to the technical field of control systems, and in particular relates to a gas turbine digital speed control system and method. Background technique [0002] The advantages of the fuel hydraulic control system are simple and reliable. In fact, the fuel hydraulic control system only provides open-loop fuel supply to the gas generator according to the position of the throttle lever, limits the fuel supply, and ensures the safe operation of the gas generator. The principle is simple and the work is stable. Coupled with a careful and detailed monitoring and protection system, it is very suitable for use in the gas turbine working environment where the workload does not change drastically and the transition process is not high. The disadvantage of this system is that the control law is too simple, and the open-loop fuel supply according to the throttle lever position cannot guarantee the stable state of the gas generator. With the chan...

AI Technical Summary

Problems solved by technology

The disadvantage of this system is that the control law is too simple, and the open-loop fuel supply according to the throttle lever position cannot guarantee the stable state of the gas generator. With the change of atmospheric temperature, fuel supply conditions and load changes, the gas generator The working point will have a certain drift, which is not conducive to the stable work of the gas generator at the predetermined working point

[0003] Since the acceleration and deceleration control of the gas generator only limits the rising speed of the fuel supply in time sequence, in order to ensure the safety of the gas generator, it is necessary to ensure sufficient surge margin during the acceleration and deceleration process, and the acceleration and deceleration can only be performed according to a certain The speed is carried out, so the transition process takes a long time, which affects the maneuverability of the ship's power

Images