Digital fuel system

Abstract

The invention discloses a digital fuel system comprising a gear pump, wherein an input end pipeline of the gear pump is connected with a fuel oil inlet, running power of the gear pump is provided by amotor, an output end pipeline of the gear pump is connected with a fuel oil distributor through a safety valve and a flow-limiting valve in sequence, the safety valve is used for controlling on-off of fuel, and the flow-limiting valve can receive an instruction sent by a control system for flow control; the fuel oil distributor consists of a discharge valve bank, a distribution valve bank and a stop switch; fuel oil introduced into the main oil way of the fuel oil distributor enters the distribution valve set after passing through the stop switch, the distribution valve set is divided into amain oil way and an auxiliary oil way to reach the nozzle, the auxiliary oil way is connected with the starting air valve, the starting air valve is provided with two connectors, one connector is usedfor discharging fuel oil, and the other connector is used for providing air to be introduced into the auxiliary oil way and the main oil way for mixed combustion. The use efficiency of the gas turbine can be improved, the functions of data recording, storing, exchanging and the like are achieved, the gas turbine can be suitable for different load characteristics, and the use range of the gas turbine can be expanded.

Description

Technical field [0001] The invention belongs to the field of gas turbine fuel system design, and specifically relates to a digital fuel system. Background technique [0002] Most gas turbines use fuel oil hydraulic control systems. The hydraulic control system is suitable for use in the working environment of gas turbines where the workload does not change drastically and the transition process is not demanding. The control law of the system is too simple. The fuel is supplied in an open loop according to the position of the throttle lever, which cannot guarantee the stable state of the gas generator. With the change of atmospheric temperature, fuel supply conditions and load changes, the operating point of the gas generator is limited. There will be a certain drift, which is not conducive to the stable operation of the gas generator at the predetermined operating point. [0003] The digital control system is the trend of future development. It can realize the control of different...

AI Technical Summary

Problems solved by technology

The control law of this system 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 working point of the gas generator There will be a certain drift, which is not conducive to the stable work of the gas generator at the predetermined working point

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