Integrated verification method for hydrogen micro-mixing combustion chamber

Abstract

The invention provides a hydrogen micro-mixing combustion chamber integration verification method, and relates to the technical field of engine testing. The verification method comprises the steps that a combustion chamber is designed according to performance requirements and size constraints of an engine; designing the position and lead of each test point on the engine so as to arrange a test system; designing a lubricating oil system to prolong the service life of an engine bearing, and designing a hydrogen supply system and an ignition system according to the characteristics of hydrogen; assembling a designed combustion chamber, a test system, a lubricating oil system, a hydrogen supply system and an ignition system together, designing a control system, and building an integrated verification platform; and carrying out an engine test on the built integrated verification platform. Before an integrated verification platform is built, a combustion chamber, a test system, a lubricating oil system, a hydrogen supply system, an ignition system and a control system are designed, it is ensured that the operation environment of the hydrogen micro-mixing combustion chamber can be safely, reliably and truly simulated, engine development is completed with the minimum cost, and the verification requirement of the whole engine is met.

Description

Technical Field

[0001] The present invention relates to the technical field of engine testing, and in particular to a method for verifying the integration of a hydrogen micro-mixing combustion chamber. Background Art

[0002] One of the combustion products of hydrogen is water vapor, which does not produce greenhouse gases such as carbon dioxide and harmful substances. Therefore, it has the advantage of zero carbon emissions and helps to achieve low-carbon aviation. At the same time, hydrogen has a high fuel calorific value. Compared with traditional petroleum fuels, hydrogen per unit mass contains more energy and can provide greater thrust and flight distance. With the continuous development and progress of hydrogen energy technology, hydrogen, as a clean, high-energy-density fuel, has broad application prospects in the aviation field.

[0003] Compared with engines with large thrust levels, micro turbojet engines can quickly realize the research and development and verification of hydrogen, but the fuel of existing micro turbojet engines is aviation kerosene, and the combustion chamber is relatively small. It usually adopts a compact design to adapt to the small size and weight requirements of the overall engine, and the combustion chamber should have good sealing and high temperature resistance. In order to ensure that the fuel is fully burned, the combustion chamber usually adopts rich fuel combustion. In general, the combustion chamber of the micro turbojet engine focuses on miniaturization, rich combustion conditions and spray combustion in design to meet the requirements of small engines for high efficiency and compact structure. In order to reduce greenhouse gas emissions, the use of green renewable energy is an inevitable choice. However, the integrated verification of the hydrogen micro-mixed combustion chamber is a problem that needs to be solved. Summary of the invention

[0004] The present invention provides a hydrogen micro-mixing combustion chamber integration verification method, which is used to solve the problem that the hydrogen micro-mixing combustion chamber integration verification cannot be performed in the prior art.

[0005] The present invention provides a hydrogen mild-mix combustion chamber integration verification method, the verification method comprising: Design the combustion chamber according to the performance requirements and size constraints of the engine; design the location and leads of each test point on the engine to lay out the test system; design the lubricating oil system to increase the life of the engine bearings, and design the hydrogen supply system and ignition system according to the characteristics of hydrogen; Assemble the designed combustion chamber, test system, lubricating oil system, hydrogen supply system and ignition system, design the control system, and build an integrated verification platform; Carry out engine tests on the built integrated verification platform.

[0006] According to a hydrogen mild-mix combustion chamber integration verification method provided by the present invention, the lubricating oil system includes a lubricating oil tank, an oil outlet pipe and an oil return pipe, one end of the oil outlet pipe is connected to the oil outlet of the lubricating oil tank, and the other end is connected to the lubrication cavity of the engine bearing, one end of the oil return pipe is connected to the lubrication cavity of the engine bearing, and the other end is connected to the oil inlet of the lubricating oil tank.

[0007] According to a hydrogen mild-mix combustion chamber integrated verification method provided by the present invention, during the engine test, if it is found that the performance of the lubricating oil system does not meet the requirements, the lubricating oil system is redesigned and the engine test is performed again; If the operating characteristics of the engine under the control of the control system are inconsistent with those of a turbine engine powered by aviation kerosene, the control system is redesigned.

[0008] According to a hydrogen micro-mixing combustion chamber integrated verification method provided by the present invention, various test points on the engine include: the inlet and outlet of the fan, the inlet and outlet of the combustion chamber, the inlet and outlet of the compressor, the inlet and outlet of the turbine, and the inlet and outlet of the nozzle, and temperature sensors and pressure sensors are arranged at each of the test points.

[0009] According to a hydrogen mild-mix combustion chamber integration verification method provided by the present invention, each test point on the engine also includes a pollutant discharge port of the combustion chamber and a pollutant discharge port of the nozzle.

[0010] According to a hydrogen micro-mixing combustion chamber integration verification method provided by the present invention, when the outlet temperature of the nozzle is greater than or equal to 1500K, the control system controls the engine to stop running; when the engine has deflagration and flame spraying, the control system controls the engine to stop running based on a stop signal input by the user.

[0011] According to a hydrogen micro-mixing combustion chamber integration verification method provided by the present invention, the hydrogen supply system includes a hydrogen cylinder and a gas supply pipe, the gas inlet of the gas supply pipe is connected to the hydrogen cylinder, the gas outlet of the gas supply pipe has a plurality of branch pipes, each of the branch pipes is connected to the hydrogen inlet of the combustion chamber, and a flow meter, a servo valve, a check valve, a one-way valve and a flame arrester are installed on the gas supply pipe.

[0012] According to a hydrogen mild-mix combustion chamber integrated verification method provided by the present invention, performing an engine test on an assembled integrated verification platform specifically includes: Based on the start signal of the control system, the motor is controlled to drive the rotor of the engine to rotate, and the ignition system is controlled to ignite; after successful ignition, the hydrogen supply system is controlled to deliver hydrogen to the combustion chamber, so that the engine begins to accelerate under the action of hydrogen and the motor; when the rotor speed of the engine reaches a preset value, the motor is controlled to be turned off, and the engine is controlled to continue to accelerate to idle speed under the action of hydrogen alone, and the test data obtained in each process is recorded.

[0013] According to a hydrogen mild-mix combustion chamber integration verification method provided by the present invention, the gas supply amount of the hydrogen gas supply system is controlled based on the control signal of the control system to achieve the acceleration and deceleration of the engine.

[0014] A hydrogen mild-mix combustion chamber integration verification method provided by the present invention also includes: After the engine test is completed, the test system, the lubricating oil system, the ignition system and the control system are packaged to form the engine test software.

[0015] The hydrogen micro-mixed combustion chamber integrated verification method provided by the present invention is a method for integrating and verifying a hydrogen micro-mixed combustion chamber. Before building an integrated verification platform, the combustion chamber, test system, lubricating oil system, hydrogen gas supply system, ignition system and control system are designed in advance to ensure safety and reliability, truly simulate the operating environment of the hydrogen micro-mixed combustion chamber, and be able to test engines using hydrogen as fuel, so as to complete engine development at the lowest cost and meet the verification requirements of the entire engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic flow chart of the hydrogen micro-mixing combustion chamber integration verification method provided by the present invention.

[0018] Figure 2 It is a structural schematic diagram of the hydrogen supply system provided by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 10. Air supply pipe; 20. Flow meter; 30. Check valve; 40. Servo valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Combine the following Figure 1-Figure 2 The integrated verification method of the hydrogen mild-mix combustion chamber of the present invention is described.

[0022] like Figure 1 As shown, the present invention provides a hydrogen mild-mix combustion chamber integrated verification method, comprising: Step 110, design the combustion chamber according to the performance requirements and size constraints of the engine; design the positions and leads of each test point on the engine to facilitate the layout of the test system, design the lubricating oil system to increase the life of the engine bearings, and design the hydrogen supply system and ignition system according to the characteristics of hydrogen; Step 120, assemble the designed combustion chamber, test system, lubricating oil system, hydrogen supply system and ignition system together and design the control system to build an integrated verification platform; Step 130, conduct engine tests on the built integrated verification platform.

[0023] Designing the combustion chamber according to the engine's performance requirements and size constraints specifically includes: designing the overall scheme of the combustion chamber based on the engine's performance requirements and size constraints; and refining the combustion chamber structure based on the designed overall scheme of the combustion chamber. In the overall scheme design of the combustion chamber, the optimization design of the micro-mixing head, flame tube cooling, main combustion hole and mixing hole is carried out simultaneously to ensure that the combustion chamber performance parameters such as pressure loss and combustion efficiency outlet temperature distribution coefficient meet the requirements. The refinement of the combustion chamber structure includes the connection structure design between the combustion chamber and the compressor, the connection structure design between the combustion chamber and the turbine, the design of the hydrogen pipeline on the combustion chamber, the material selection design of the combustion chamber, the tolerance design of parts and components, and the connection design of the assembly. A three-dimensional model is established during the refinement of the combustion chamber structure to facilitate adjustment and simulation and improve design efficiency.

[0024] The position and leads of each test point on the engine are designed so as to arrange the test system to collect the corresponding information. Among them, the engine includes a fan, a combustion chamber, a compressor, a turbine and a nozzle. The fan is installed at the front of the combustion chamber and is connected to the air inlet of the combustion chamber through the compressor, so as to provide compressed air to the combustion chamber with the help of the cooperation of the fan and the compressor; the turbine is installed at the outlet of the combustion chamber, and the nozzle is installed at the outlet of the turbine. Select key performance parameters and failure mode related parameters as test objects. Specifically, the test objects in the embodiment of the present invention include temperature, pressure and pollutant emissions. The position of the test point can reflect the working state and performance of the engine. For this purpose, test points are set at key parts of the engine such as the fan, compressor, combustion chamber, turbine and nozzle. The test points of the test system include the inlet and outlet of the fan, combustion chamber, compressor, turbine and nozzle. The test points also include the combustion chamber pollutant emission test points and the nozzle pollutant emission test points, so as to detect whether the pollutant emissions of the combustion chamber and the nozzle meet the emission standards.

[0025] To ensure accurate and stable transmission of collected information, the lead material, routing position and fixing method need to be designed. The lead should be made of copper, silver, nickel-chromium alloy and other materials with good conductivity, high temperature resistance and corrosion resistance. The lead should avoid the connection gaps of the accessories in the engine, and the wiring should be as short and straight as possible to reduce signal attenuation and interference. The lead fixing method ensures that the lead will not loosen or break due to vibration or impact during engine operation. It can be firmly fixed by welding, crimping or plugging.

[0026] The lubricating oil system can be either circulating or non-circulating. The design of the hydrogen supply system includes the design of storage devices, pressure reducing devices, flow control devices and safety protection devices. Specifically, hydrogen is mostly stored in the form of high-pressure gas or liquid, and the storage device adopts a hydrogen cylinder with good sealing performance. The pressure reducing device reduces the pressure of high-pressure hydrogen to the pressure range required by the engine. For this purpose, a pressure reducing valve is provided on the gas supply pipe 10 of the hydrogen cylinder. When designing the flow control, a flow meter 20 and a servo valve 40 are provided on the gas supply pipe 10 of the hydrogen cylinder for flow control. A check valve 30, a flame arrester and a one-way valve are also installed on the gas supply pipe 10 of the hydrogen cylinder as safety protection devices.

[0027] The design of the ignition system includes the selection of the igniter, the design of the ignition position, and the design of the ignition fuel. Specifically, the ignition energy of hydrogen is low and the combustion speed is fast. The ignition system needs to provide sufficient capacity to ignite the hydrogen and accurately control the ignition to ensure the stability of combustion. Optionally, the ignition system can choose a spark plug and the ignition fuel can be propane. When in use, the hydrogen is connected after the propane ignition is successfully started.

[0028] The entire engine is fixed on the test bench, and the test bench is fixed on the ground, so that the entire engine is supported by the test bench. It can be understood that the test bench is universal and can match different engines. The control system is connected to the test system, hydrogen supply system, lubricating oil system, igniter and engine respectively. The control system is responsible for monitoring and controlling various parameters of the engine to ensure safe and stable operation of the engine. The control system design includes hardware design and software design. The hardware design includes controllers, various sensors and actuators. Various sensors are arranged according to the designed test system, and sensors and actuators are connected to the controller respectively. The software program is integrated in the controller, including detection program, fault diagnosis and display, protection program, etc.

[0029] The designed combustion chamber, test system, lubricating oil system, hydrogen supply system and ignition system are assembled together to ensure that each component can be tightly connected and leak-proof. Specifically, the test system is installed at each designed test point and according to the designed lead wires, which is used to detect the temperature and pressure of the boundary line between each component of the engine, so as to monitor the internal temperature of the engine and the engine performance in real time, and ensure that the engine does not overheat. During assembly, the motor is installed at the front end of the engine to assist the engine start. The turbine is installed at the outlet of the combustion chamber, and the nozzle is installed at the outlet of the turbine. The hydrogen supply system is connected to the combustion chamber to provide hydrogen as fuel to the combustion chamber. The lubricating oil system is used to provide lubricating oil to the engine bearings, and the igniter is used to ignite the fuel in the combustion chamber. In this way, an integrated verification platform is built, and then the engine test is carried out on the built integrated verification platform to simulate the engine start, low speed, acceleration, high speed and shutdown process. The control system controls the engine's operating parameters and receives real-time data from the test system to confirm the engine's working characteristics.

[0030] The hydrogen micro-mixed combustion chamber integrated verification method provided in the embodiment of the present invention designs the combustion chamber, test system, lubricating oil system, hydrogen gas supply system, ignition system and control system before building the integrated verification platform to ensure safety and reliability, truly simulate the operating environment of the hydrogen micro-mixed combustion chamber, and be able to test engines using hydrogen as fuel, so as to complete engine development at the lowest cost and meet the verification requirements of the entire engine.

[0031] The lubricating oil system includes a lubricating oil tank, an oil outlet pipe and an oil return pipe. One end of the oil outlet pipe is connected to the oil outlet of the lubricating oil tank, and the other end is connected to the lubrication chamber of the engine bearing. One end of the oil return pipe is connected to the lubrication chamber of the engine bearing, and the other end is connected to the oil inlet of the lubricating oil tank.

[0032] The lubricating oil tank contains lubricating oil, which flows into the engine bearings along the oil outlet pipe to lubricate the engine bearings, thereby reducing frictional heat generated at the bearings during engine operation and extending the service life of the engine bearings. The lubricating oil after lubricating the engine bearings returns to the lubricating oil tank along the oil return pipe for recycling. An oil supply pump is installed on the oil outlet pipe, and an oil return pump is installed on the oil return pipe. The amount of lubricating oil in the engine bearings is adjusted by controlling the operation of the oil supply pump and the oil return pump, thereby achieving temperature control at the engine bearings.

[0033] During the engine test, if the performance of the lubricating oil system does not meet the requirements, the lubricating oil system will be redesigned until the lubricating oil system can circulate; if the operating characteristics of the engine under the control of the control system are inconsistent with those of the turbine engine running on aviation kerosene, the control system will be redesigned.

[0034] During the engine test, the lubrication, cooling and sealing effects of the lubricating oil system are determined based on the test results of the test system to determine whether they meet the requirements. Taking the cooling effect as an example, if the cooling effect of the lubricating oil system meets the requirements, it means that the operation of the oil supply pump and the oil outlet pump in the lubricating oil system is compatible with the operation of the engine, and there is no need to adjust the lubricating oil system. At this time, the designed lubricating oil system can be directly encapsulated in the engine test software. If the cooling effect of the lubricating oil system does not meet the requirements, it means that the operation of the oil supply pump and the oil return pump in the surface lubricating oil system is not compatible with the operation of the engine, and the lubricating oil system needs to be redesigned. After the lubricating oil system is redesigned, the engine test process is carried out again, and the verification is repeated until the cooling effect of the lubricating oil system meets the requirements. The verification process of the lubrication effect and the sealing effect is similar to that of the cooling effect. Therefore, the lubricating oil system can be adjusted through the engine test until the cooling, lubrication and sealing effects of the lubricating oil system meet the requirements.

[0035] During the engine test, the operating instructions are input through the control system, and the working characteristics of the engine under the control system are determined according to the output data of the engine under different working conditions. If it is found that the working characteristics of the engine are inconsistent with the turbine engine of aviation fuel, the control system is redesigned. After the control system is redesigned, the engine test is carried out again. Repeatedly, until the working characteristics of the engine are consistent with the turbine engine of aviation fuel under the control of the latest control system. At this point, the control system is verified in place and the control system is encapsulated in the engine test software.

[0036] In one embodiment, if the outlet temperature of the nozzle is greater than or equal to 1500K, the control system automatically controls the engine to stop running and suspend the test. Specifically, a temperature sensor is installed at the outlet of the nozzle, and the control system is in communication connection with the temperature sensor, and automatically monitors based on the temperature information collected by the temperature sensor, thereby ensuring the safety of the test and reducing the risk of the test.

[0037] In the case of engine explosion and flame spray, the control system controls the engine to stop running based on the stop command input by the user to interrupt the test. During the test, if the operator finds that the engine has explosion and flame spray, the stop command is input through the emergency stop button or other input device, and the control system controls the engine to stop running based on the stop command input by the user, thereby reducing the risk of the test run.

[0038] like Figure 2 As shown, the hydrogen supply system includes a hydrogen cylinder and a gas supply pipe 10, the gas inlet of the gas supply pipe 10 is connected to the hydrogen cylinder, and the gas outlet of the gas supply pipe 10 has multiple branch pipes, each of which is connected to the hydrogen inlet of the combustion chamber.

[0039] like Figure 2 As shown, the gas outlet is connected to an annular tube, on which a plurality of branch pipes are arranged, each branch pipe being connected to a hydrogen inlet, thereby supplying gas evenly to various places in the combustion chamber with the help of a plurality of branch pipes, thereby avoiding excessive hydrogen concentration at a certain lateral point in the combustion chamber.

[0040] Based on the above embodiment, a flow meter 20, a servo valve 40, a check valve 30, a one-way valve and a flame arrester are installed on the gas supply pipe 10. The servo valve 40 controls the opening of the gas supply pipe 10 to adjust the hydrogen flow rate, and the flow meter 20 is used to detect the hydrogen flow rate so as to provide flow control parameters for the supply of hydrogen. The check valve 30 and the one-way valve cooperate to prevent the reverse flow of hydrogen, and the flame arrester prevents the high-temperature flame in the combustion chamber from entering the hydrogen cylinder along the gas supply pipe 10, providing safety protection for the hydrogen cylinder.

[0041] The engine test on the built integrated verification platform specifically includes: based on the start signal of the control system, the motor is controlled to drive the engine's rotor to rotate, and the ignition system is controlled to ignite. After the ignition is successful, the hydrogen supply system is controlled to deliver hydrogen to the combustion chamber, so that the engine begins to accelerate under the action of hydrogen and the motor; when the engine's rotor speed reaches a preset value, the motor is controlled to shut down, and the engine is controlled to continue to accelerate to idle speed under the action of hydrogen alone, and the test data obtained by the test system in each process is recorded.

[0042] Specifically, the ignition system uses spark plug ignition, and propane is used as the ignition fuel. During ignition, the motor starts based on the start signal and drives the rotor of the engine to rotate at a higher speed to blow out the residual gas in the engine. Then the motor is controlled to drive the rotor to rotate at a fluctuating speed. For example, the rotor is driven to rotate at a speed of 2000-4000 rpm. At this time, the solenoid valve that controls the propane is energized and opened, and the spark plug is energized at the same time. The electric spark produced by the spark plug ignites the propane. When the inlet temperature in the combustion chamber rises by a preset value, it indicates that the ignition is successful. After determining that the ignition is successful, the servo valve 40 on the air supply pipe 10 is opened to introduce hydrogen into the combustion chamber. Among them, the preset value can be 10°C. If the inlet temperature of the combustion chamber rises by 10°C, it indicates that the ignition is successful. During the ignition process, the motor will adjust the operating power according to the actual speed of the rotor of the engine.

[0043] After the ignition is successful, the control system controls the servo valve 40 to gradually open. After the hydrogen is ignited, the propane solenoid valve is closed. At this time, the engine begins to accelerate under the joint action of hydrogen and the motor, and the motor is controlled to close after the rotor of the engine accelerates to the preset value. Optionally, the preset value is 30,000 rpm. Of course, the preset value can also be other values. It should be noted that the rotor speed increase rate of the engine during motor operation is controlled by the motor. If the speed increase is slow, the temperature rises quickly; if the speed increase is fast, the temperature rises slowly. Therefore, the temperature can be used as a reference to adjust the speed increase rate. For example, the speed increase rate is regulated in the manner of 20°C / 1000 rpm. After the motor is turned off, the engine accelerates only under the action of hydrogen until it idles. The control system controls the test data obtained during ignition, low speed, acceleration and idling.

[0044] The hydrogen supply system is controlled based on the control signal of the control system to increase or decrease the speed of the engine. Specifically, the opening of the servo valve 40 is controlled based on the control signal of the control system to adjust the hydrogen flow rate entering the combustion chamber.

[0045] The control system has an operation interface, on which a throttle lever button is provided. By pressing the throttle lever button, the hydrogen flow of the engine can be increased to provide the engine with a greater speed and thrust. When the engine needs to be stopped, the throttle lever button is pressed to reduce the hydrogen flow until the engine stops rotating.

[0046] In a specific embodiment, the hydrogen mild-mix combustion chamber integration verification method further includes: after the engine test is completed, packaging the lubricating oil system, ignition system, control system and test steps to form engine test software.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for verifying the integration of a hydrogen mild-mix combustion chamber, characterized in that: The verification method comprises: Design the combustion chamber according to the performance requirements and size constraints of the engine; design the location and leads of each test point on the engine to lay out the test system; design the lubricating oil system to increase the life of the engine bearings, and design the hydrogen supply system and ignition system according to the characteristics of hydrogen; Assemble the designed combustion chamber, test system, lubricating oil system, hydrogen supply system and ignition system, design the control system, and build an integrated verification platform; Carry out engine tests on the built integrated verification platform.

2. The hydrogen mild-mix combustion chamber integration verification method according to claim 1, characterized in that: The lubricating oil system includes a lubricating oil tank, an oil outlet pipe and an oil return pipe. One end of the oil outlet pipe is connected to the oil outlet of the lubricating oil tank, and the other end is connected to the lubrication chamber of the engine bearing. One end of the oil return pipe is connected to the lubrication chamber of the engine bearing, and the other end is connected to the oil inlet of the lubricating oil tank.

3. The hydrogen mild-mix combustion chamber integration verification method according to claim 2, characterized in that: During the engine test, if it is found that the performance of the lubricating oil system does not meet the requirements, the lubricating oil system is redesigned and the engine test is performed again; If the operating characteristics of the engine under the control of the control system are inconsistent with those of a turbine engine powered by aviation kerosene, the control system is redesigned.

4. The hydrogen mild-mix combustion chamber integration verification method according to claim 1, characterized in that: The various test points on the engine include: the inlet and outlet of the fan, the inlet and outlet of the combustion chamber, the inlet and outlet of the compressor, the inlet and outlet of the turbine, and the inlet and outlet of the nozzle, and temperature sensors and pressure sensors are arranged at each of the test points.

5. The hydrogen mild-mix combustion chamber integration verification method according to claim 4, characterized in that: The various test points on the engine also include the pollutant discharge port of the combustion chamber and the pollutant discharge port of the nozzle.

6. The hydrogen mild-mix combustion chamber integration verification method according to claim 4, characterized in that: When the outlet temperature of the nozzle is greater than or equal to 1500K, the control system controls the engine to stop running; when the engine has deflagration and flame spraying, the control system controls the engine to stop running based on a stop signal input by a user.

7. The hydrogen mild-mix combustion chamber integration verification method according to claim 1, characterized in that: The hydrogen supply system includes a hydrogen cylinder and a gas supply pipe, the gas inlet of the gas supply pipe is connected to the hydrogen cylinder, the gas outlet of the gas supply pipe has multiple branch pipes, each of the branch pipes is connected to the hydrogen inlet of the combustion chamber, and the gas supply pipe is installed with a flow meter, a servo valve, a check valve, a one-way valve and a flame arrester.

8. The hydrogen mild-mix combustion chamber integration verification method according to claim 7, characterized in that: The engine test on the assembled integrated verification platform specifically includes: Based on the start signal of the control system, the motor is controlled to drive the rotor of the engine to rotate, and the ignition system is controlled to ignite; after successful ignition, the hydrogen supply system is controlled to deliver hydrogen to the combustion chamber, so that the engine begins to accelerate under the action of hydrogen and the motor; when the rotor speed of the engine reaches a preset value, the motor is controlled to be turned off, and the engine is controlled to continue to accelerate to idle speed under the action of hydrogen alone, and the test data obtained in each process is recorded.

9. The hydrogen mild-mix combustion chamber integration verification method according to claim 7 or 8, characterized in that: The gas supply amount of the hydrogen gas supply system is controlled based on the control signal of the control system to achieve the acceleration and deceleration of the engine.

10. The hydrogen mild-mix combustion chamber integration verification method according to claim 7, characterized in that: Also includes: After the engine test is completed, the test system, the lubricating oil system, the ignition system and the control system are packaged to form the engine test software.

Images