Digital fuel system

A fuel system, digital technology, applied in the direction of charging system, turbine/propulsion fuel delivery system, gas turbine device, etc., can solve the problems that are not conducive to the stable operation of the gas generator and cannot guarantee the stable state of the gas generator, and achieve The effect of expanding the range of use, light weight and superior function

CN110529258AInactive Publication Date: 2019-12-03AECC AVIATION POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-12-03
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the drawings.

[0020] See figure 1 , The digital fuel system of the present invention includes a gear pump 3.1, the input end pipeline of the gear pump 3.1 is connected to the fuel inlet a, the running power of the gear pump 3.1 is provided by the motor 2, and the pipeline between the gear pump 3 and the fuel inlet a A flow meter D is provided, and the flow meter D is used to measure the flow rate of the input fuel. A fuel filter 1 is installed on the pipeline between the gear pump 3 and the flow meter D. The input end and the output end of the fuel filter 1 are connected to a differential pressure signal C. The differential pressure signal C is used to measure fuel filtration The pressure difference before and after. The output pipe of the fuel filter 1 after the contact C of the differential pressure signal is divided into two paths, one is connected to the gear pump 3.1, the other is ...