Turbine interstage combustion second combustion chamber fuel oil control system, method and product

Abstract

The invention relates to the technical field of gas turbines, and discloses a turbine interstage combustion second combustion chamber fuel oil control system, method and product, and the system comprises a controller, a slide wire rheostat, a servo motor pump, a fuel cut-off electromagnetic valve, a fuel oil distributor and a second combustion chamber. The controller controls the rotating speed of the servo motor pump and on-off of the fuel cut-off electromagnetic valve by combining collected voltage signals of the slide-wire rheostat, it is guaranteed that the fuel flow dynamically responds according to the requirement of an operator, meanwhile, the upper computer is supported to modify the maximum fuel flow limiting value in real time, and the flexibility of the system adapting to different working conditions is enhanced; the servo motor pump controls the fuel oil in the second combustion chamber to pass through the fuel cut-off electromagnetic valve and the fuel oil distributor, flow control of the second combustion chamber is converted into rotating speed control of the servo motor pump, the fuel oil is ensured to uniformly enter the second combustion chamber according to needs by combining the uniform distribution function of the fuel oil distributor, and the stability and efficiency of interstage combustion are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, specifically to a fuel control system, method, and product for the second combustion chamber of turbine stage combustion. Background Technology

[0002] With the introduction of new aero-engine concepts, the interstage combustion technology, initially used in gas turbines, has naturally been applied to the aerospace field. The technical principle of this approach is to add a combustion chamber, or second combustion chamber, in the transition section between the high- and low-pressure turbines to increase the gas temperature before the low-pressure turbine, thereby improving engine performance. Currently, there is no design scheme for a second combustion chamber fuel control system for interstage combustion engines. Summary of the Invention

[0003] This invention provides a fuel control system, method, and product for the second combustion chamber of a turbine-stage combustion engine, in order to solve the problem that the prior art lacks a design scheme for a fuel control system for the second combustion chamber of a turbine-stage combustion engine.

[0004] In a first aspect, the present invention provides a fuel control system for a second combustion chamber in turbine-stage combustion, connected to a host computer; the system includes:

[0005] The system includes a controller, a sliding wire rheostat, a servo motor pump, a fuel cut-off solenoid valve, a fuel distributor, and a second combustion chamber. The controller is connected to the sliding wire rheostat, the servo motor pump, and the fuel cut-off solenoid valve. The fuel output terminal of the servo motor pump is connected to the fuel cut-off solenoid valve via a fuel passage. The fuel distributor is connected to both the servo motor pump and the second combustion chamber. The controller receives the maximum fuel flow limit value sent by the host computer, collects the voltage signal generated by the resistance signal of the sliding wire rheostat, and controls the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the voltage signal and the maximum fuel flow limit value. The servo motor pump controls the fuel flow in the second combustion chamber through the fuel cut-off solenoid valve and the fuel distributor.

[0006] The turbo-stage combustion second combustion chamber fuel control system provided by this invention avoids confusion between electrical connections and fuel pathways by defining the physical connections of components and the logic of fuel pathways, ensuring the integrity of the fuel delivery, control, and distribution pathways. Furthermore, the controller combines the voltage signal generated from the resistance signal of the acquired slide wire rheostat and the maximum fuel flow limit value to control the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve, achieving dual control. This ensures that the fuel flow dynamically responds to operator needs—that is, the operator controls the fuel flow by changing the resistance of the slide wire rheostat—while also supporting real-time modification of the maximum flow rate via a host computer, enhancing the system's flexibility to adapt to different operating conditions. Furthermore, the servo motor pump controls the fuel in the second combustion chamber through the fuel cut-off solenoid valve and fuel distributor, converting the flow control of the second combustion chamber into servo motor pump speed control. Combined with the uniform distribution function of the fuel distributor, this ensures that fuel enters the second combustion chamber on demand and evenly, guaranteeing the stability and efficiency of interstage combustion. Therefore, by implementing this invention, the gap in the prior art of lacking a design scheme for a turbo-stage combustion engine second combustion chamber fuel control system is filled.

[0007] In one alternative implementation, the controller is further configured to receive a corrected maximum fuel flow limit value sent by a host computer, and adjust the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the corrected maximum fuel flow limit value.

[0008] The turbo-stage combustion second combustion chamber fuel control system provided by this invention dynamically corrects the maximum fuel flow limit value in real time through a host computer, and adjusts the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve in combination with the corrected maximum fuel flow limit value. It can quickly adapt to different engine operating conditions without stopping the machine to adjust parameters, and improve the system's response speed and adaptability to complex operating conditions.

[0009] In one optional implementation, the controller is also used to collect status data of the servo motor pump and the on / off status of the oil shut-off solenoid valve, and send the voltage signal, status data and on / off status to the host computer.

[0010] The fuel control system for the second combustion chamber of the turbine stage provided by this invention transmits the collected voltage signal of the sliding rheostat, the status data of the servo motor pump, and the on / off status of the fuel cut-off solenoid valve to the host computer through the controller. This enables full monitoring of the system's operating status, helps operators to grasp core parameters in real time, detect faults in a timely manner, reduce safety risks caused by parameter malfunctions, and provides data support for fault diagnosis.

[0011] In a second aspect, the present invention provides a fuel control method for the second combustion chamber of turbine-stage combustion, used in a controller of the fuel control system for the second combustion chamber of turbine-stage combustion as described in the first aspect or any corresponding embodiment thereof; the method includes: The system receives the maximum fuel flow limit value sent by the host computer and collects the voltage signal generated by the resistance signal of the slide wire rheostat; based on the maximum fuel flow limit value and the voltage signal, it determines the target control command; based on the target control command, it controls the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve, so that the servo motor pump controls the fuel flow in the second combustion chamber through the fuel cut-off solenoid valve and the fuel distributor.

[0012] The turbo-stage combustion second combustion chamber fuel control method provided by this invention generates target control commands by combining the maximum fuel flow limit value and voltage signal, avoiding the limitations of single signal control and ensuring that the commands meet both the flow limit constraint and real-time operation requirements. Furthermore, the target control commands are converted into actuator actions, realizing closed-loop control between commands, actions, and flow rates, ensuring precise matching of fuel flow to target requirements and guaranteeing stable combustion in the second combustion chamber.

[0013] In one alternative implementation, a target control command is determined based on the maximum fuel flow limit value and a voltage signal, including: When the voltage signal meets the first preset condition, the target control command is determined to be to control the servo motor pump to stop rotating and to supply power to the fuel cut-off solenoid valve; when the voltage signal meets the second preset condition, the target control command is determined to be to adjust the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the preset first linear relationship and the preset second linear relationship. The preset first linear relationship is used to characterize the relationship between the voltage signal and the speed, and the preset second linear relationship is used to characterize the relationship between the speed and the fuel flow rate; when the voltage signal meets the third preset condition, the target control command is determined to be to control the servo motor pump to rotate at the maximum speed based on the maximum fuel flow rate limit value and to control the fuel cut-off solenoid valve to be de-energized.

[0014] The present invention provides a fuel control method for the second combustion chamber of turbine-stage combustion. When the voltage signal meets a first preset condition, the servo motor pump is stopped, and power is supplied to the fuel cut-off solenoid valve. This dual-cut-off of fuel supply from both the source and the path quickly stops combustion, avoiding the risk of fuel accumulation in emergency conditions and ensuring system safety. Furthermore, when the voltage signal meets a second preset condition, the servo motor pump speed and the on / off state of the fuel cut-off solenoid valve are adjusted based on preset first and second linear relationships. This achieves linearly adjustable fuel flow, ensuring smooth flow changes with the voltage signal and preventing sudden rises and falls in combustion chamber temperature and pressure, thus improving combustion stability and engine smoothness. Furthermore, when the voltage signal meets a third preset condition, the servo motor pump is controlled to rotate at maximum speed based on the maximum fuel flow limit value, and the fuel cut-off solenoid valve is de-energized. By locking the maximum fuel flow output, the engine performance under high-demand conditions is guaranteed, while the maximum fuel quantity constraint prevents flow exceeding limits, balancing performance and safety.

[0015] In an optional implementation, the method further includes: upon receiving a corrected maximum fuel flow limit value sent by a host computer, adjusting the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the corrected maximum fuel flow limit value.

[0016] The fuel control method for the second combustion chamber of the turbine stage provided by this invention dynamically corrects the maximum fuel flow limit value in real time through a host computer, and adjusts the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve in combination with the corrected maximum fuel flow limit value. It can quickly adapt to different engine operating conditions without stopping the machine to adjust parameters, and improve the system's response speed and adaptability to complex operating conditions.

[0017] In one optional implementation, the method further includes: acquiring the status data of the servo motor pump and the on / off status of the oil cut-off solenoid valve, and sending the voltage signal, status data and on / off status to the host computer.

[0018] The fuel control method for the second combustion chamber in turbine-stage combustion provided by this invention enables full monitoring of the system's operating status, provides operators with visual monitoring data, helps operators grasp core parameters in real time, promptly detect faults, reduce safety risks caused by parameter malfunctions, and provides data support for fault diagnosis.

[0019] Thirdly, the present invention provides an electronic device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the turbine-stage combustion second combustion chamber fuel control method of the second aspect above or any corresponding embodiment thereof.

[0020] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the turbine-stage combustion second combustion chamber fuel control method of the second aspect above or any corresponding embodiment thereof.

[0021] Fifthly, the present invention provides a computer program product, including computer instructions for causing a computer to execute the turbine-stage combustion second combustion chamber fuel control method of the second aspect above or any corresponding embodiment thereof. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a first framework of a fuel control system for the second combustion chamber of turbine-stage combustion according to an embodiment of the present invention. Figure 2 This is a block diagram of the cable connection of an interstage combustion system according to an embodiment of the present invention; Figure 3 This is a schematic flowchart of a fuel control method for the second combustion chamber of turbine stage combustion according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a second frame of the fuel control system for the second combustion chamber of the turbine stage combustion according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the interstage combustion performance test curve according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the interstage combustion performance test curve according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] This invention provides a fuel control system for the second combustion chamber of turbine stage combustion. The controller acquires the voltage signal generated by the resistance signal of the sliding rheostat and combines it with the maximum fuel flow limit value to control the servo motor pump and the fuel cut-off solenoid valve, thereby achieving the effect of controlling the fuel flow in the second combustion chamber through the servo motor pump, the fuel cut-off solenoid valve and the fuel distributor.

[0028] This embodiment provides a fuel control system for the second combustion chamber of turbine-stage combustion, such as... Figure 1 As shown, the fuel control system 1 for the second combustion chamber of the turbine stage combustion is connected to the host computer 2 and includes: a controller 10, a sliding rheostat 20, a servo motor pump 30, a fuel cut-off solenoid valve 40, a fuel distributor 50, and a second combustion chamber 60.

[0029] The controller 10 is connected to the slide wire rheostat 20, the servo motor pump 30 and the fuel cut-off solenoid valve 40 respectively. The fuel output end of the servo motor pump 30 is connected to the fuel cut-off solenoid valve 40 through the fuel passage. The fuel distributor 50 is connected to the fuel cut-off solenoid valve 40 and the second combustion chamber 60 respectively.

[0030] In one optional embodiment, the controller 10 is connected to the slide wire rheostat 20 via a matching connecting cable (L3 cable, X3 interface); the controller 10 is connected to the servo motor pump 30 via a matching connecting cable (L1 cable, X1 interface), realizing RS422 communication; the controller 10 is connected to the oil cut-off solenoid valve 40 via a matching connecting cable (L3 / L5 cable, X3 / X5 interface).

[0031] In an alternative embodiment, such as Figure 2 As shown, the definitions of L1 cable, L3 cable and L5 cable are shown in Tables 1 to 3 below.

[0032] Indicates 1. Definition of L1 cable

[0033] Table 2. Definition of L3 Cable

[0034] Table 3. Definition of L5 Cable

[0035] Optionally, the controller 10 is used to receive the maximum fuel flow limit value sent by the host computer 2, and to collect the voltage signal generated by the resistance signal of the slide wire rheostat 20, and to control the speed of the servo motor pump 30 and the on / off state of the fuel cut-off solenoid valve 40 based on the voltage signal and the maximum fuel flow limit value.

[0036] In an optional embodiment, the slide wire rheostat 20 is an adjustable resistor used to generate the CLP2 signal, i.e., a voltage signal. Its electrical characteristics are: supply voltage: 10V ± 5%; resistance value: 5kΩ; the recommended model is WXD4-23-3W equipped with a C1 dial.

[0037] In an optional embodiment, the electrical characteristics of the servo motor pump 30 are as follows: a) Rated output power: ≥600W; b) Maximum speed: ≥10000 r / min; c) Maximum continuous current: not greater than 40A; d) Operating voltage: 28VDC; e) Speed ​​range: (200-10000) r / min; f) Speed ​​control accuracy: steady-state accuracy of 200 r / min ±30 r / min; g) Steady-state accuracy of 5000 r / min ±80 r / min; (h) Steady-state accuracy of 10000r / min ±100r / min.

[0038] i) Speed ​​response time: Acceleration time from 0 to 500 r / min at 80% rated load is no more than 500 ms; (j)(200-10000) r / min acceleration time not greater than 4s; k) Continuous working time: The motor shall be able to operate continuously for no less than 3 hours under rated voltage and for no less than 2 hours under conditions of 80% or above rated load. l) Control method: RS422 communication is used to receive controller commands and feedback motor speed; m) Insulation resistance: Under normal climatic conditions, the insulation resistance between the motor winding leads and the casing should not be less than 50MΩ (100V MΩ meter). n) Fuel flow range: 20L / h-350L / h.

[0039] In an optional embodiment, the fuel cut-off solenoid valve 40 is a safety device for cutting off the fuel supply when necessary. Its electrical characteristics are: rated operating voltage: 28VDC; operating current: ≤0.9A; normal operating state: not energized; fuel cut-off state: energized.

[0040] In one optional embodiment, the maximum fuel flow limit value is the maximum fuel supply threshold allowed by the second combustion chamber, which can be preset according to engine operating conditions. These engine operating conditions may include high-load, low-load combustion targets, etc.

[0041] In an alternative embodiment, the voltage signal (CLP2 signal) is a real-time control intention transmitted by the operator via a joystick, used to directly reflect the demand for fuel flow in the second combustion chamber 60.

[0042] In an optional embodiment, the host computer 2 acts as a parameter setting terminal, transmitting the maximum fuel flow limit value to the controller 10 via RS422 communication. Simultaneously, the variable resistor 20 is an adjustable resistor; the movement of the joystick changes its resistance, thereby altering the output voltage signal. Therefore, the controller 10, by acquiring the CLP2 signal from the variable resistor 20, can determine the fuel flow requirement of the second combustion chamber 60. Furthermore, by combining real-time control intent (voltage signal) with safety constraints (maximum fuel flow limit value), the controller 10 can generate speed commands for the servo motor pump and on / off commands for the fuel cut-off solenoid valve 40, thereby controlling the speed of the servo motor pump 30 and the on / off state of the fuel cut-off solenoid valve 40.

[0043] In an optional embodiment, after the system is powered on and initialized, the controller 10 establishes a connection with the host computer 2 via the RS422 communication protocol. Then, the host computer 2 can package the maximum fuel flow limit value set by the operator into a data frame conforming to the communication protocol and send it to the controller 10 via the matching connection cable (L1 cable, X1 interface).

[0044] Furthermore, after receiving the data frame, the controller 10 parses and verifies the data, and stores the maximum fuel flow limit value in the internal register as the upper limit constraint benchmark for subsequent fuel flow control. At the same time, it feeds back a parameter reception success signal to the host computer 2, forming a communication closed loop.

[0045] Furthermore, the slide wire rheostat 20 is connected to the controller 10 via a matching connecting wire (L3 cable, X3 interface). At the same time, the controller 10 provides the slide wire rheostat 20 with a rated power supply voltage of 10V±5% to ensure that the slide wire rheostat 20 can work normally.

[0046] Furthermore, the slide wire rheostat 20 changes its resistance (0-5kΩ) according to the operation of the joystick and outputs a CLP2 signal.

[0047] Furthermore, the controller 10 can determine the control mode to be executed by pre-setting the segmented control law of the CLP2 signal and combining the acquired CLP2 voltage signal and the stored maximum fuel flow limit value: (1) When the resistance value of CLP2 is 0-0.5kΩ (oil cut-off section), the safety protection logic is triggered, and control commands are generated to stop the servo motor pump and supply power to the oil cut-off solenoid valve, that is, the servo motor pump 30 is controlled to stop supplying oil, and at the same time, the oil cut-off solenoid valve 40 is supplied with power.

[0048] (2) When the resistance value of CLP2 is between 0.5-4.5kΩ (linear flow adjustment range), the target speed is calculated according to the linear formula of resistance value-speed. At the same time, it is checked whether the fuel flow rate corresponding to the speed is less than the maximum fuel flow rate limit. If it meets the requirements, the servo motor pump is operated at the target speed and the fuel cut-off solenoid valve is de-energized.

[0049] For example, when the resistance value of CLP2 is in the range of [0.5-1.0] kΩ, the servo motor pump is controlled to operate at 200 r / min, providing a fuel flow rate of 30 kg / h; at the same time, an ignition control signal is output for 30 seconds (tentative); the fuel cut-off solenoid valve is de-energized.

[0050] In an optional embodiment, the ignition control signal has the following characteristics: output DC voltage (16~32.2)V, load impedance not less than 150Ω (temperature 20℃, L≤450mH / 1kHz); Furthermore, when the resistance value of CLP2 is in the range of (1.0-4.5]kΩ, the speed of the servo motor pump is linearly controlled between 200r / min and 10000r / min to provide a fuel flow rate of 30kg / h-270kg / h; the fuel cut-off solenoid valve is de-energized.

[0051] (3) When the resistance value of CLP2 is 4.5-5.0kΩ (maximum flow range), the maximum fuel flow limit value is mapped to the corresponding maximum speed, and the servo motor pump is operated at the maximum speed and the fuel cut-off solenoid valve is de-energized. That is, the servo motor pump speed is controlled to the maximum speed of 10000r / min, the fuel flow remains unchanged, and the fuel cut-off solenoid valve is de-energized.

[0052] Furthermore, the controller 10 packages the generated speed command into an RS422 communication data frame (including the command speed, check bit, and other information), and sends one frame of data to the servo motor pump 30 every 30ms via the matching connection line (L1 cable, X1 interface).

[0053] Meanwhile, the servo motor pump 30 feeds back a frame of data (including actual speed, operating status, etc.) to the controller 10 every 30ms. Furthermore, the controller 10 can determine whether the speed command needs to be corrected based on the feedback data, thus forming a closed-loop speed control.

[0054] Furthermore, the controller 10 can also output a level signal to the oil cut-off solenoid valve 40 via a matching connecting cable (L3 / L5 cable, X3 / X5 interface). A high level indicates power supply, and a low level indicates power cut-off.

[0055] Furthermore, if the system is determined to be in oil cut-off mode, a high-level output powers the solenoid valve, causing the valve core to close and cut off the oil circuit; if the system is determined to be in oil supply mode, a low-level output de-energizes the solenoid valve, causing the valve core to open and connect the oil circuit. Simultaneously, the controller 10 can also collect feedback signals from the oil cut-off solenoid valve 40 to ensure that the operation of the oil cut-off solenoid valve 40 conforms to the command requirements.

[0056] Optionally, a servo motor pump 30 is used to control the fuel flow in the second combustion chamber 60 via a fuel cut-off solenoid valve 40 and a fuel distributor 50.

[0057] In an optional embodiment, the servo motor pump 30 is an actuator for fuel flow control, capable of drawing fuel from the source and delivering it downstream. Then, through the passage control of the fuel cut-off solenoid valve 40 and the uniform distribution of the fuel distributor 50, it finally provides the required fuel flow to the second combustion chamber 60.

[0058] In one optional embodiment, the servo motor pump 30 is a positive displacement pump structure, and the volume of fuel output per revolution is fixed (displacement is fixed). Therefore, the fuel flow rate has a strict linear relationship with the rotation speed. Thus, the controller can accurately control the input flow rate by adjusting the rotation speed of the servo motor pump 30.

[0059] In an optional embodiment, the fuel output end of the servo motor pump 30 is connected to the fuel cut-off solenoid valve 40 through a fuel passage. Fuel can only enter the downstream fuel distributor 50 when the fuel cut-off solenoid valve 40 is de-energized, i.e., when the fuel passage is opened. If the solenoid valve is powered (cuts off the fuel passage), even if the motor pump rotates, fuel cannot be delivered to the fuel distributor 50.

[0060] Furthermore, the fuel, guided by the solenoid valve, enters the fuel distributor 50, which then distributes the total fuel evenly to multiple fuel injectors in the second combustion chamber 60, avoiding local fuel accumulation or insufficient supply and ensuring uniform and stable combustion.

[0061] In an optional embodiment, after the servo motor pump 30 is connected to the 28VDC rated operating voltage, it starts to operate according to the speed command sent by the controller 10. Then, its internal volumetric pump body (such as a gear pump) draws fuel from the engine fuel tank or upstream fuel supply line, and pressurizes the fuel through the internal mechanical structure and delivers it to its own fuel output end.

[0062] Furthermore, the fuel output terminal of the servo motor pump 30 is connected to the input terminal of the fuel cut-off solenoid valve 40 via a fuel line. Therefore, when the fuel cut-off solenoid valve 40 is de-energized and in the on state, fuel flows smoothly through the internal channel of the fuel cut-off solenoid valve 40 to the input terminal of the fuel distributor 50.

[0063] Furthermore, when the fuel cut-off solenoid valve 40 is powered and is in the closed state, the valve core of the fuel cut-off solenoid valve 40 closes under the action of electromagnetic force, blocking the fuel passage. Fuel cannot enter the fuel distributor 50, and the fuel output by the servo motor pump 30 is temporarily stored on the pump body outlet side or flows back to the fuel tank through the pressure relief valve, stopping the delivery to the fuel cut-off solenoid valve 40.

[0064] Furthermore, after the fuel is switched on by the fuel cut-off solenoid valve 40 and enters the fuel distributor 50, the internal flow distribution structure of the fuel distributor 50 can evenly distribute the total fuel flow to multiple output ports according to a preset ratio. Each output port is connected to a fuel injector in the second combustion chamber 60 via a pipeline.

[0065] Furthermore, the fuel output from the fuel distributor 50 is injected into the second combustion chamber 60 in an atomized form through the fuel injector. Furthermore, the injected fuel flow rate is strictly matched to the rotational speed of the servo motor pump 30; for example, a speed of 200 r / min corresponds to a flow rate of 30 kg / h, and 10,000 r / min corresponds to a flow rate of 270 kg / h.

[0066] Optionally, the controller 10 is also used to receive the corrected maximum fuel flow limit value sent by the host computer 2, and adjust the speed of the servo motor pump 30 and the on / off state of the fuel cut-off solenoid valve 40 based on the corrected maximum fuel flow limit value.

[0067] In an optional embodiment, the operator can input the corrected maximum fuel flow limit value in the parameter setting interface of the host computer 2 software according to the engine operating conditions. Furthermore, the host computer 2 can package the corrected maximum fuel flow limit value into an RS422 communication data frame according to a preset format and send it to the controller 10 via a matching connection cable (L1 cable, X1 interface).

[0068] Furthermore, the controller 10 receives the communication data frame sent by the host computer 2 through the X1 interface and starts the internal data verification program to check whether the data frame is complete and without transmission errors. If the verification fails, the controller 10 sends a retransmission instruction signal to the host computer 2, and the host computer 2 retransmits the instruction. If the verification is successful, the controller 10 parses the corrected maximum fuel flow limit value.

[0069] Furthermore, controller 10 can store the parsed maximum fuel flow limit value in its internal maximum fuel quantity register, overwriting the original maximum fuel flow limit value. Simultaneously, controller 10 can send a parameter update success data frame to host computer 2, completing the parameter reception closed loop.

[0070] Furthermore, the controller 10 can readjust the speed of the servo motor pump 30 and the on / off state of the fuel cut-off solenoid valve 40 based on the corrected maximum fuel flow limit value. For a detailed description of how the controller 10 controls the speed of the servo motor pump 30 and the on / off state of the fuel cut-off solenoid valve 40 based on the resistance signal and the maximum fuel flow limit value, please refer to the description of the controller 10 controlling the speed of the servo motor pump 30 and the on / off state of the fuel cut-off solenoid valve 40 based on the resistance signal and the maximum fuel flow limit value; it will not be repeated here.

[0071] Optionally, the controller 10 is also used to collect the status data of the servo motor pump 30 and the on / off status of the oil cut-off solenoid valve 40, and send the resistance signal, status data and on / off status to the host computer 2.

[0072] In an optional embodiment, the controller 10 and the servo motor pump 30 communicate via RS422, transmitting one frame of data bidirectionally every 30ms.

[0073] For example, the servo motor pump 30 packages its own status data into RS422 data frames at a 30ms cycle and sends them to the controller 10 through the matching connection cable (L1 cable, X1 interface).

[0074] In an optional embodiment, the data frame format sent by the servo motor pump 30 to the controller 10 is shown in Table 4 below: Table 4. Data frame format sent from the servo motor pump to the controller

[0075] Among them, status bits 00, 01, 04, and 08 represent normal operation of the servo motor pump, overcurrent alarm, overvoltage alarm, and undervoltage alarm, respectively.

[0076] In an optional embodiment, since the oil shut-off solenoid valve 40 is connected to the controller 10 via a matching connecting cable (L3 / L5 cable, X3 / X5 interface), and the controller 10 outputs an on / off power signal to drive the oil shut-off solenoid valve 40, the controller 10 can determine the on / off state of the oil shut-off solenoid valve 40 by detecting the control level it outputs.

[0077] In an optional embodiment, the controller 10 can integrate the CLP2 voltage signal, servo motor pump status data, and oil cut-off solenoid valve on / off status into a unified RS422 data frame at a 30ms cycle, and then the controller sends the framed data to the host computer 2 via (L1 cable, X1 interface).

[0078] Furthermore, after receiving the data sent by the controller 10, the host computer 2 can perform real-time monitoring and fault alarms according to the system status display requirements of the host computer software: (1) Real-time monitoring: Data is displayed in the form of numerical values, curves, and indicator lights; (2) Fault alarm: If the status bit of the servo motor pump is detected as 01 / 04 / 08 (fault), or the status of the oil cut-off solenoid valve does not match the CLP2 signal, for example, CLP2=1.0kΩ but oil cut-off is displayed, the upper computer alarm is triggered, so that the operator can intervene in time. The alarm method can be through sound or pop-up window alarm.

[0079] The interstage combustion second combustion chamber fuel control system provided in this embodiment avoids confusion between electrical connections and fuel pathways by defining the physical connections of components and the logic of fuel pathways, ensuring the integrity of the fuel delivery, control, and distribution pathways. Furthermore, the controller combines the voltage signal generated from the resistance signal of the acquired slide wire rheostat with the maximum fuel flow limit value to control the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve, achieving dual control. This ensures that the fuel flow dynamically responds to operator needs (i.e., the resistance signal), allowing the operator to control the fuel flow by changing the resistance of the slide wire rheostat, while also supporting real-time modification of the maximum flow rate via a host computer, enhancing the system's flexibility to adapt to different operating conditions. Furthermore, the servo motor pump controls the fuel flow in the second combustion chamber through the fuel cut-off solenoid valve and fuel distributor, converting the servo motor pump speed control into second combustion chamber flow control. Combined with the uniform distribution function of the fuel distributor, this ensures that fuel enters the second combustion chamber on demand and evenly, guaranteeing the stability and efficiency of interstage combustion. Therefore, by implementing this invention, the gap in the prior art regarding the lack of a design scheme for a fuel control system for the second combustion chamber of an interstage combustion engine is filled.

[0080] According to an embodiment of the present invention, a method for controlling fuel in the second combustion chamber of turbine stage combustion is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0081] This embodiment provides a fuel control method for the second combustion chamber of turbine-stage combustion, which can be used in the controller 10 of the aforementioned fuel control system 1 for the second combustion chamber of turbine-stage combustion. Figure 3 This is a flowchart of a fuel control method for the second combustion chamber of turbine-stage combustion according to an embodiment of the present invention, as shown below. Figure 3 As shown, the process includes the following steps: Step S301: Receive the maximum fuel flow limit value sent by the host computer and collect the voltage signal generated by the resistance signal of the slide wire rheostat.

[0082] The specific process can be found in the above embodiment, which describes the interaction process and functions between the host computer 2 and the controller 10 and the sliding rheostat 20 in the fuel control system 1 for the second combustion chamber between the turbine stage. It will not be repeated here.

[0083] Step S202: Determine the target control command based on the maximum fuel flow limit value and the voltage signal.

[0084] For a detailed description of the process, please refer to the functional description of the controller 10 in the fuel control system 1 of the second combustion chamber of the turbine stage combustion in the above embodiments, which will not be repeated here.

[0085] Step S203: Based on the target control command, control the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve, so that the servo motor pump controls the fuel flow in the second combustion chamber through the fuel cut-off solenoid valve and the fuel distributor.

[0086] The specific process can be found in the above embodiments, which describe the interaction process and functions between the controller 10, servo motor pump 30, fuel cut-off solenoid valve 40, fuel distributor 50 and second combustion chamber 60 in the turbine stage combustion second combustion chamber fuel control system 1. It will not be repeated here.

[0087] The turbine-stage combustion second combustion chamber fuel control method provided in this embodiment generates target control commands by combining the maximum fuel flow limit value and voltage signal, avoiding the limitations of single signal control and ensuring that the commands meet both the flow limit constraint and real-time operational requirements. Furthermore, the target control commands are converted into actuator actions, achieving closed-loop control between commands, actions, and flow rates, ensuring precise matching of fuel flow to target requirements and guaranteeing stable combustion in the second combustion chamber.

[0088] In some optional implementations, step S202 above includes: Step S2021: When the voltage signal meets the first preset condition, the target control command is determined to be to control the servo motor pump to stop rotating and to supply power to the oil cut-off solenoid valve.

[0089] Among them, the voltage signal meeting the first preset condition indicates that the voltage signal (CLP2 resistance value) is in the 0-0.5kΩ (oil cut-off section).

[0090] The specific process is described in the above embodiment of the function of controller 10 in the fuel control system 1 of the second combustion chamber of the turbine stage combustion, and will not be repeated here.

[0091] Step S2022: When the voltage signal meets the second preset condition, the target control command is determined to be based on the preset first linear relationship and the preset second linear relationship, adjusting the speed of the servo motor pump and the on / off state of the oil cut-off solenoid valve.

[0092] The first linear relationship is used to characterize the relationship between voltage signal and speed; the second linear relationship is used to characterize the relationship between speed and fuel flow.

[0093] Furthermore, the voltage signal meeting the second preset condition indicates that the voltage signal (CLP2 resistance value) is in the range of 0.5-4.5kΩ (linear current adjustment range).

[0094] The specific process is described in the above embodiment of the function of controller 10 in the fuel control system 1 of the second combustion chamber of the turbine stage combustion, and will not be repeated here.

[0095] Step S2023: When the voltage signal meets the third preset condition, the target control command is determined to be to control the servo motor pump to rotate at the maximum speed based on the maximum fuel flow limit value, and to control the fuel cut-off solenoid valve to be de-energized.

[0096] Among them, the voltage signal meeting the third preset condition means that the voltage signal (CLP2 resistance value) is in the range of 4.5-5.0kΩ (maximum flow range).

[0097] The specific process is described in the above embodiment of the function of controller 10 in the fuel control system 1 of the second combustion chamber of the turbine stage combustion, and will not be repeated here.

[0098] In some optional implementations, the method further includes: upon receiving a corrected maximum fuel flow limit value sent by the host computer, adjusting the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the corrected maximum fuel flow limit value.

[0099] The specific process can be found in the above embodiment, which describes the interaction process and functions between the host computer 2 and the controller 10, servo motor pump 30, and fuel cut-off solenoid valve 40 in the second combustion chamber fuel control system 1 between the turbine stage and the host computer 2. It will not be repeated here.

[0100] In some optional implementations, the above method further includes: collecting the status data of the servo motor pump and the on / off status of the oil cut-off solenoid valve, and sending the voltage signal, status data and on / off status to the host computer.

[0101] The specific process can be found in the above embodiment, which describes the interaction process and functions between the controller 10, the sliding rheostat 20, the servo motor pump 30, and the fuel cut-off solenoid valve 40 in the fuel control system 1 for the second combustion chamber between the host computer 2 and the turbine stage. It will not be repeated here.

[0102] In one example, a fuel control system for the second combustion chamber of turbine-stage combustion is provided, which consists of a controller, matching connecting lines, a sliding rheostat, and host computer software. A schematic diagram of the framework is shown below. Figure 4 As shown.

[0103] 1. Controller: The core processing unit of the system, consisting of both software and hardware. It has the following main functions: The system acquires the CLP2 signal (resistance or voltage value) from the slide wire rheostat and converts it into a control target value. Based on the CLP2 signal, it adjusts the servo motor pump speed according to a preset control law, controls the on / off state of the fuel cut-off solenoid valve, and outputs the ignition control signal. It exchanges data with the servo motor pump and the host computer software via the RS422 protocol, sending commands and receiving feedback. The system status (such as servo motor pump speed, fault alarms, etc.) is monitored in real time and displayed on the host computer software.

[0104] The controller connects to the slide wire rheostat via a matching cable (e.g., X3 interface) to acquire the CLP2 signal. The controller interacts with the servo motor pump via RS422 communication (through X1 interface), sending speed commands and receiving feedback. The controller outputs ignition control signals and fuel cut-off solenoid valve control signals via the X2 interface. The controller exchanges data with the host computer software via RS422 communication (through X1 interface), and the host computer software displays the system status (e.g., speed, ignition signal, solenoid valve status).

[0105] 2. Slide Wire Rheostat: An adjustable resistor used to generate the CLP2 signal (resistance value), serving as the reference input for the controller to adjust fuel flow. Its electrical characteristics include: supply voltage 10V±5%, resistance value 5kΩ. The recommended model is WXD4-23-3W equipped with a C1 dial. The resistance value (CLP2) of the slide wire rheostat has a specific control relationship with the servo motor pump speed. The controller obtains the CLP2 signal by acquiring its voltage value. The CLP2 signal is segmented to correspond to different control modes: Low resistance segment (0-0.5kΩ): The system is in fuel cut-off state. Medium resistance segment (0.5-4.5kΩ): The system is in fuel flow regulation state. High resistance segment (4.5-5.0kΩ): The system is in maximum fuel flow state. The maximum fuel flow value of CLP2 can be modified in real time, enhancing the system's flexibility.

[0106] The slide wire rheostat is connected to the controller via a matching connecting wire (L3 cable, X3 interface) to provide CLP2+ and CLP2- signals.

[0107] After reading the CLP2 signal, the controller adjusts the speed of the servo motor pump and the state of the oil cut-off solenoid valve according to the preset control law.

[0108] 3. Servo motor pump: The servo motor pump is the actuator for fuel flow control, which controls the fuel flow by adjusting the speed.

[0109] The servo motor pump precisely adjusts the fuel flow rate according to the controller's commanded rotational speed: when the commanded speed is 200 r / min, it provides a fuel flow rate of 30 kg / h. When the commanded speed changes linearly between 200 and 10000 r / min, the fuel flow rate changes linearly between 30 and 270 kg / h.

[0110] High speed control precision.

[0111] The servo motor pump communicates with the controller via RS422 through a matching connection cable (L1 cable, X1 interface). Every 30ms, the controller sends a data frame (containing the commanded speed) to the servo motor pump, and the servo motor pump sends back a data frame (containing the commanded speed, actual speed, status, etc.) every 30ms.

[0112] 4. Fuel shut-off solenoid valve: The fuel shut-off solenoid valve is a safety device used to cut off the fuel supply when necessary.

[0113] Furthermore, the specific applications of the oil shut-off solenoid valve in the control process: When the CLP2 signal is in the low resistance range (0-0.5kΩ), the controller supplies power to the fuel cut-off solenoid valve to cut off the fuel supply. In other CLP2 ranges (e.g., 0.5-5.0kΩ), the fuel cut-off solenoid valve is de-energized, allowing fuel flow. This provides an emergency fuel cut-off function to prevent unforeseen dangers.

[0114] The oil shut-off solenoid valve is connected to the controller via matching connecting cables (L3 and L5 cables, X3 and X5 interfaces). The controller outputs a control signal (energizing or de-energizing) based on the CLP2 signal, directly driving the oil shut-off solenoid valve to operate.

[0115] 5. Host Computer Software: This software runs on an external computer and is used to monitor system status, display parameters, and set control targets. It acquires the CLP2 signal from the rheostat and displays the servo motor pump speed, ignition control signal, and fuel cut-off solenoid valve status.

[0116] Furthermore, in specific applications of the control process: the host computer software displays real-time system operating data, including servo motor pump speed, fuel flow rate, ignition status, and fault information. It allows the operator to modify the maximum fuel flow rate value corresponding to CLP2 and adjust control parameters.

[0117] The host computer software connects to the controller via RS422 communication (through the X1 interface) and receives data frames sent by the controller. The controller sends the acquired CLP2 signal, servo motor pump feedback data, etc., to the host computer software, which then parses and displays them.

[0118] 6. Matching Connecting Cables: The matching connecting cables consist of multiple cables (L1-L5) used for the physical connection of all components, including power, signal, and communication lines. Each cable consists of an electrical connector, wires, shielding, etc., to ensure the reliability and interference resistance of signal transmission.

[0119] Furthermore, the specific applications of the matching connecting cables in the control process: (1) L1 cable: connects the controller to the servo motor pump and the host computer, and transmits RS422 communication signals and power.

[0120] (2) L2 cable: connects the controller to the ignition control module and the control panel, and transmits ignition signals and status indications.

[0121] (3) L3 cable: connects the controller to the slide wire rheostat and the oil cut-off solenoid valve, and transmits the CLP2 signal and the solenoid valve control signal.

[0122] (4) L4 and L5 cables: provide power and control circuits for the servo motor pump and the oil cut-off solenoid valve.

[0123] Furthermore, the specific control logic of the above system is as follows: (1) Initialization: After the system is powered on, the controller starts, the servo motor pump runs according to CLP2, and the oil cut-off solenoid valve is de-energized (allowing oil supply). The host computer software starts monitoring.

[0124] (2) Signal acquisition: The controller acquires the CLP2 signal (resistance value) through the slide wire rheostat and converts it into the control target value.

[0125] (3) Control decision: The controller calculates the command speed of the servo motor pump according to the segmented control law of the CLP2 signal, and determines the state of the oil cut-off solenoid valve and ignition control.

[0126] (4) Command execution: The controller sends a speed command to the servo motor pump via RS422 communication. The controller outputs a control signal (energized or de-energized) for the fuel cut-off solenoid valve. Under ignition conditions, the controller outputs an ignition signal.

[0127] (5) Real-time adjustment: The operator can modify the control parameters through the host computer software. The system adjusts the fuel flow in real time according to the CLP2 signal to ensure stable engine operation.

[0128] In one optional embodiment, the controller has ignition control, fuel cut-off solenoid valve control, and servo motor pump control functions. Simultaneously, the controller's host computer monitoring software needs to acquire the rheostat CLP2 signal and display the servo motor pump rotation signal, ignition control signal, and fuel cut-off solenoid valve signal.

[0129] The controller adjusts the fuel flow rate based on the voltage signal generated by CLP2, where CLP2 is the resistance value of the slide wire rheostat. The controller obtains the corresponding reference value as the control target by acquiring the voltage value of the slide wire rheostat.

[0130] The core of the joystick is a slide wire rheostat. The joystick changes the resistance of the rheostat, thus changing the voltage across it. The controller collects this voltage change and, based on a pre-set voltage and servo motor pump speed control table, determines the target speed for the servo motor pump. Therefore, the reference value refers to the speed reference value corresponding to the rheostat voltage, which is the controller's control target for the servo motor pump.

[0131] Furthermore, the electrical characteristics of the slide wire rheostat are as follows: supply voltage: 10V±5%; resistance value: 5kΩ; the recommended model is WXD4-23-3W equipped with a C1 dial.

[0132] Furthermore, CLP2 is controlled in a linear relationship with the servo motor pump speed, and the maximum fuel flow value corresponding to the CLP2 resistance value can be modified in real time.

[0133] Furthermore, the change in the resistance (CLP2) of the slide wire rheostat will cause a change in the voltage across its terminals. The voltage signal is acquired by the electronic controller. Based on the correspondence between the servo motor pump speed and CLP2, the controller obtains the target speed control of the servo motor pump. The speed of the servo motor pump controls the fuel flow rate in the second combustion chamber. Therefore, the control objective of controlling the fuel flow rate in the second combustion chamber through the slide wire rheostat is achieved.

[0134] Furthermore, the specific control rules for the CLP2 and the servo motor pump speed are as follows: (1) When CLP2 is at (0-0.5]kΩ, the controller controls the servo motor pump to stop supplying oil and simultaneously supplies power to the oil cut-off solenoid valve; (2) When CLP2 is at [0.5-1.0] kΩ, control the servo motor pump to be at 200 r / min, providing a fuel flow of 30 kg / h; at the same time, output the ignition control signal for 30 seconds (tentative); the fuel cut-off solenoid valve is de-energized; (3) When CLP2 is at (1.0-4.5]kΩ, control the servo motor pump speed to change linearly between 200r / min and 10000r / min, providing a fuel flow of 30kg / h-270kg / h; de-energize the fuel cut-off solenoid valve; (4) When CLP2 is at (4.5-5.0]kΩ, control the servo motor pump speed at 10000r / min, and keep the fuel flow unchanged; de-energize the fuel cut-off solenoid valve.

[0135] Furthermore, the electrical characteristics of the servo motor pump are as follows: a) Rated output power: ≥600W; b) Maximum speed: ≥10000 r / min; c) Maximum continuous current: not greater than 40A; d) Operating voltage: 28VDC; e) Speed ​​range: (200-10000) r / min; f) Speed ​​control accuracy: steady-state accuracy of 200 r / min ±30 r / min; g) Steady-state accuracy of 5000 r / min ±80 r / min; (h) Steady-state accuracy of 10000r / min ±100r / min.

[0136] i) Speed ​​response time: Acceleration time from 0 to 500 r / min at 80% rated load is no more than 500 ms; (j)(200-10000) r / min acceleration time not greater than 4s; k) Continuous working time: The motor shall be able to operate continuously for no less than 3 hours under rated voltage and for no less than 2 hours under conditions of 80% or above rated load. l) Control method: RS422 communication is used to receive controller commands and feedback motor speed; m) Insulation resistance: Under normal climatic conditions, the insulation resistance between the motor winding leads and the casing should not be less than 50MΩ (100V MΩ meter). n) Fuel flow range: 20L / h-350L / h.

[0137] Furthermore, the characteristics of the ignition control signal are: output DC voltage (16~32.2)V, load impedance not less than 150Ω (temperature 20℃, L≤450mH / 1kHz).

[0138] Furthermore, the communication protocol between the controller and the servo motor pump is as follows: After the servo motor pump is powered on, it automatically starts before receiving a control command. The default speed is 200 r / min, and closed-loop speed control is implemented. Upon receiving a command from the host computer, closed-loop speed control is performed according to the commanded speed. The controller sends a data frame (containing the commanded speed) to the servo motor pump every 30ms, and the servo motor pump sends a data frame (including the commanded speed, actual speed, and status) to the host computer every 30ms via the controller. The communication baud rate is 38400 bit / s, and the data format is 8 data bits and 1 stop bit. Details are as follows: (1) Data frame format sent by the controller to the servo motor pump: After the servo motor pump is powered on, it sends a message 7E03000103F0 to the host computer every 60ms. The format of the message is shown in Table 5 below.

[0139] Table 5. Data frame format sent from the controller to the servo motor pump

[0140] (2) The data frame format sent by the servo motor pump to the controller is shown in Table 4 above.

[0141] Furthermore, the supporting connecting cable consists of 5 cables. Each cable bundle comprises an electrical connector, a tail, a nickel-plated copper wire braided mesh, a braided layer, and a marking sleeve. Cables X1, X2, and X3 are connected to the controller, and their connection diagram is shown below. Figure 2 As shown.

[0142] Furthermore, the definitions of L1 cable, L3 cable and L5 cable are shown in Tables 1 to 3 above; the definitions of L2 cable and L4 cable are shown in Tables 6 and 7 below, respectively.

[0143] Table 6. Definition of L2 Cable

[0144] Table 7. L4 Cable Definition

[0145] In an alternative embodiment, the performance test curves without interstage combustion are as follows: Figure 5 As shown, the engine operated stably and all parameters were normal during the test.

[0146] Furthermore, using the inter-turbo combustion control system scheme of this example, the performance test curve of the engine with inter-turbo combustion is shown below. Figure 6 As shown, the engine operated stably and all parameters were normal during the test.

[0147] The turbine-stage combustion second combustion chamber fuel control system provided in this example has the following effects: 1. The controller adjusts the fuel flow rate based on the CLP2 signal. CLP2 is the resistance value on the slide wire rheostat. The controller obtains the corresponding reference value as the control target by collecting the voltage value of the slide wire rheostat, and can respond and control the engine fuel quantity in real time.

[0148] 2. To address the fuel control issue in the second combustion chamber of the turbine stage, an independent, convenient, and effective fuel control device was designed, and the effectiveness of the system was verified through experiments.

[0149] 3. The implementation method is simple and can effectively control the fuel flow.

[0150] 4. It has a shut-off setting, which can control the solenoid valve to cut off the fuel supply at any time in the event of an unforeseen danger.

[0151] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0152] The following is a detailed reference. Figure 7This diagram illustrates a suitable structural schematic for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processor, etc.) 701, which can perform various appropriate actions and processes based on a program stored in read-only memory (ROM) 702 or a program loaded from memory 708 into random access memory (RAM) 703. The RAM 703 also stores various programs and data required for the operation of the electronic device. The processor 701, ROM 702, and RAM 703 are interconnected via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0153] Typically, the following devices can be connected to I / O interface 705: input devices 706 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 707 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 708 including, for example, magnetic tapes, hard disks, etc.; and communication devices 709. Communication device 709 allows electronic devices to exchange data via wireless or wired communication with other devices. Although Figure 7 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0154] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 709, or installed from a memory 708, or installed from a ROM 702. When the computer program is executed by the processor 701, it performs the functions defined in the turbine-stage combustion second combustion chamber fuel control method of the embodiments of the present invention.

[0155] Figure 7 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present invention.

[0156] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the turbine-stage combustion second combustion chamber fuel control method shown in the above embodiments is implemented.

[0157] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0158] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A fuel control system for the second combustion chamber of turbine-stage combustion, connected to a host computer; characterized in that, The system includes: a controller, a sliding rheostat, a servo motor pump, a fuel cut-off solenoid valve, a fuel distributor, and a second combustion chamber. The controller is connected to the sliding rheostat, the servo motor pump, and the fuel cut-off solenoid valve. The fuel output terminal of the servo motor pump is connected to the fuel cut-off solenoid valve through a fuel passage. The fuel distributor is connected to the fuel cut-off solenoid valve and the second combustion chamber. The controller is used to receive the maximum fuel flow limit value sent by the host computer, and to collect the voltage signal generated by the resistance signal of the slide wire rheostat, and to control the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the voltage signal and the maximum fuel flow limit value. The servo motor pump is used to control the fuel flow rate in the second combustion chamber via the fuel cut-off solenoid valve and the fuel distributor.

2. The system according to claim 1, characterized in that, The controller is also configured to receive the corrected maximum fuel flow limit value sent by the host computer, and adjust the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve based on the corrected maximum fuel flow limit value.

3. The system according to claim 1 or 2, characterized in that, The controller is also used to collect the status data of the servo motor pump and the on / off status of the oil cut-off solenoid valve, and send the voltage signal, the status data and the on / off status to the host computer.

4. A method for controlling fuel consumption in the second combustion chamber of turbine-stage combustion, characterized in that, A controller for a turbine-stage combustion second combustion chamber fuel control system according to any one of claims 1 to 3; the method includes: Receive the maximum fuel flow limit value sent by the host computer and collect the voltage signal generated by the resistance signal of the slide wire rheostat; Based on the maximum fuel flow limit value and the voltage signal, the target control command is determined; Based on the target control command, the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve are controlled so that the servo motor pump controls the fuel flow in the second combustion chamber through the fuel cut-off solenoid valve and the fuel distributor.

5. The method according to claim 4, characterized in that, Based on the maximum fuel flow limit and the voltage signal, a target control command is determined, including: When the voltage signal meets the first preset condition, the target control command is determined to control the servo motor pump to stop rotating and to supply power to the oil cut-off solenoid valve. When the voltage signal meets the second preset condition, the target control command is determined to be based on the preset first linear relationship and the preset second linear relationship, adjusting the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve. The preset first linear relationship is used to characterize the relationship between the resistance signal and the speed, and the preset second linear relationship is used to characterize the relationship between the speed and the fuel flow rate. When the voltage signal meets the third preset condition, the target control command is determined to be to control the servo motor pump to rotate at the maximum speed based on the maximum fuel flow limit value, and to control the fuel cut-off solenoid valve to be de-energized.

6. The method according to claim 5, characterized in that, The method further includes: Upon receiving the corrected maximum fuel flow limit value sent by the host computer, the speed of the servo motor pump and the on / off state of the fuel cut-off solenoid valve are adjusted based on the corrected maximum fuel flow limit value.

7. The method according to claim 5 or 6, characterized in that, The method further includes: The status data of the servo motor pump and the on / off status of the oil cut-off solenoid valve are collected, and the voltage signal, the status data and the on / off status are sent to the host computer.

8. An electronic device, characterized in that, include: A memory and a processor are communicatively connected, the memory stores computer instructions, and the processor executes the computer instructions to perform the fuel control method for the second combustion chamber of turbine-stage combustion as described in any one of claims 4 to 7.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to execute the turbine-stage combustion second combustion chamber fuel control method as described in any one of claims 4 to 7.

10. A computer program product, characterized in that, Includes computer instructions for causing a computer to execute the turbine-stage combustion second combustion chamber fuel control method as described in any one of claims 4 to 7.

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