CN-122015116-A - System, method and product for controlling fuel oil of second combustion chamber of turbine interstage combustion

CN122015116ACN 122015116 ACN122015116 ACN 122015116ACN-122015116-A

Abstract

The invention relates to the technical field of gas turbines, and discloses a fuel control system, a method and a product of a second combustion chamber for turbine inter-stage combustion. The servo motor pump controls the fuel of the second combustion chamber to pass through the fuel cut-off electromagnetic valve and the fuel distributor, the flow control of the second combustion chamber is converted into the rotation speed control of the servo motor pump, and the uniform distribution function of the fuel distributor is combined, so that the fuel is ensured to enter the second combustion chamber uniformly as required, and the stability and efficiency of inter-stage combustion are ensured.

Inventors

Yin Bingxiong
LI WEI
YAN QIUYING
Sun Zhanheng
TAN RUI

Assignees

中国航发湖南动力机械研究所

Dates

Publication Date: 20260512
Application Date: 20260204

Claims (10)

1. The system is characterized by comprising a controller, a slide wire rheostat, a servo motor pump, an oil-cut electromagnetic valve, a fuel distributor and a second combustion chamber, wherein the controller is respectively connected with the slide wire rheostat, the servo motor pump and the oil-cut electromagnetic valve, the fuel output end of the servo motor pump is connected with the oil-cut electromagnetic valve through a fuel passage, and the fuel distributor is respectively connected with the oil-cut electromagnetic valve and the second combustion chamber; The controller is used for receiving the maximum fuel flow limit value sent by the upper computer, collecting a voltage signal generated by a resistance signal of the slide wire rheostat, and controlling the rotating speed of the servo motor pump and the on-off of the fuel cut-off electromagnetic valve based on the voltage signal and the maximum fuel flow limit value; the servo motor pump is used for controlling the fuel flow of the second combustion chamber through the fuel cut-off electromagnetic valve and the fuel distributor.
2. The system of claim 1, wherein the system further comprises a controller configured to control the controller, The controller is also used for receiving the corrected maximum fuel flow limit value sent by the upper computer and adjusting the rotating speed of the servo motor pump and the on-off state of the fuel cut-off electromagnetic valve based on the corrected maximum fuel flow limit value.
3. The system according to claim 1 or 2, wherein, The controller is also used for collecting the state data of the servo motor pump and the on-off state of the oil-break electromagnetic valve and sending the voltage signal, the state data and the on-off state to the upper computer.
4. A method of controlling turbine inter-stage combustion secondary combustor fuel, for use in a controller in a turbine inter-stage combustion secondary combustor fuel control system as claimed in any one of claims 1 to 3, the method comprising: Receiving a maximum fuel flow limit value sent by an upper computer and collecting a voltage signal generated by a resistance signal of the slide wire rheostat; Determining a target control command based on the maximum fuel flow limit value and the voltage signal; And controlling the rotating speed of the servo motor pump and the on-off of the fuel cut-off electromagnetic valve based on the target control instruction so that the servo motor pump controls the fuel flow of the second combustion chamber through the fuel cut-off electromagnetic valve and the fuel distributor.
5. The method of claim 4, wherein determining a target control command based on the maximum fuel flow limit value and the voltage signal comprises: When the voltage signal meets a first preset condition, determining that the target control instruction is to control the servo motor pump to stop rotating and supply power to the oil-cut electromagnetic valve; When the voltage signal meets a second preset condition, determining that the target control instruction is based on a preset first linear relation and a preset second linear relation, and adjusting the rotating speed of the servo motor pump and the on-off state of the fuel cut-off electromagnetic valve, wherein the preset first linear relation is used for representing the relation between a resistance signal and the rotating speed, and the preset second linear relation is used for representing the relation between the rotating speed and the fuel flow; And when the voltage signal meets a third preset condition, determining the target control instruction to control the servo motor pump to rotate at the maximum rotating speed based on the maximum fuel flow limit value, and controlling the fuel cut electromagnetic valve to cut off power.
6. The method of claim 5, wherein the method further comprises: and when the corrected maximum fuel flow limit value sent by the upper computer is received, adjusting the rotating speed of the servo motor pump and the on-off state of the fuel cut-off electromagnetic valve based on the corrected maximum fuel flow limit value.
7. The method according to claim 5 or 6, characterized in that the method further comprises: and collecting state data of the servo motor pump and the on-off state of the oil-break electromagnetic valve, and sending the voltage signal, the state data and the on-off state to the upper computer.
8. An electronic device, comprising: A memory and a processor communicatively coupled to each other, the memory having stored therein computer instructions that, upon execution, perform the turbine inter-stage combustion second combustor fuel control method of any one of claims 4 to 7.
9. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the turbine inter-stage combustion second combustor fuel control method of any one of claims 4 to 7.
10. A computer program product comprising computer instructions for causing a computer to perform the turbine inter-stage combustion second combustor fuel control method of any one of claims 4 to 7.

Description

System, method and product for controlling fuel oil of second combustion chamber of turbine interstage combustion Technical Field The invention relates to the technical field of gas turbines, in particular to a fuel control system, a method and a product of a turbine interstage combustion second combustion chamber. Background With the introduction of new aeroengine concepts, turbine inter-stage combustion technology originally used on gas turbines is naturally applied in the aerospace field. The technical principle of the scheme is that a combustion chamber, namely a second combustion chamber, is added at the transition section between the high-pressure turbine and the low-pressure turbine to improve the gas temperature before the low-pressure turbine, so that the performance of the engine is improved. There is currently no turbine interstage combustion engine secondary combustor fuel control system design. Disclosure of Invention The invention provides a fuel control system, a method and a product of a second combustion chamber of a turbine inter-stage combustion, which are used for solving the problem that the prior art lacks a design scheme of the fuel control system of the second combustion chamber of the turbine inter-stage combustion engine. In a first aspect, the invention provides a fuel control system of a second combustion chamber of turbine interstage combustion, which is connected with an upper computer, and comprises: The device comprises a controller, a slide wire rheostat, a servo motor pump, an oil-cut electromagnetic valve, a fuel dispenser and a second combustion chamber, wherein the controller is respectively connected with the slide wire rheostat, the servo motor pump and the oil-cut electromagnetic valve, the fuel output end of the servo motor pump is connected with the oil-cut electromagnetic valve through a fuel passage, the fuel dispenser is respectively connected with the servo motor pump and the second combustion chamber, the controller is used for receiving a maximum fuel flow limit value sent by an upper computer, collecting a voltage signal generated by a resistance signal of the slide wire rheostat, and controlling the rotating speed of the servo motor pump and the on-off of the oil-cut electromagnetic valve based on the voltage signal and the maximum fuel flow limit value, and the servo motor pump is used for controlling the fuel flow of the second combustion chamber through the oil-cut electromagnetic valve and the fuel dispenser. According to the fuel control system for the turbine inter-stage combustion second combustion chamber, provided by the invention, the physical connection of the components and the logic of the fuel passage are determined, so that the confusion between the electrical connection and the fuel passage is avoided, and the integrity of the fuel passage from the delivery, control and distribution is ensured. Furthermore, the controller controls the rotating speed of the servo motor pump and the on-off of the oil cut-off electromagnetic valve by combining the voltage signal generated by the acquired resistance signal of the slide wire rheostat and the maximum fuel flow limit value, so that double control is realized, the dynamic response of the fuel flow along with the requirement of an operator is ensured, namely, the operator controls the fuel flow by changing the resistance of the slide wire rheostat, the maximum flow is supported to be modified in real time through an upper computer, and the flexibility of adapting the system to different working conditions is enhanced. Further, the servo motor pump controls the fuel oil of the second combustion chamber to pass through the fuel oil cut-off electromagnetic valve and the fuel oil distributor, the flow control of the second combustion chamber is converted into the rotating speed control of the servo motor pump, and the uniform distribution function of the fuel oil distributor is combined, so that the fuel oil can uniformly enter the second combustion chamber as required, and the stability and the efficiency of the inter-stage combustion are ensured. Therefore, by implementing the invention, the blank that the second combustion chamber fuel control system of the turbine interstage combustion engine is lack in the prior art is overcome. In an alternative embodiment, the controller is further configured to receive the corrected maximum fuel flow limit value sent by the host computer, and adjust the rotation speed of the servo motor pump and the on-off state of the fuel cut solenoid valve based on the corrected maximum fuel flow limit value. According to the turbine interstage combustion second combustion chamber fuel control system provided by the invention, the maximum fuel flow limit value is dynamically corrected in real time through the upper computer, the corrected maximum fuel flow limit value is combined, the rotating speed of the servo motor pump and the on-off state of the fuel cut-off electromagneti