Experimental platform for microwave plasma assisted metal and water reaction

Abstract

The invention discloses an experimental platform for microwave plasma assisted metal and water reaction. The experimental platform comprises a combustion adjusting system, a fuel comprehensive supply system, a microwave plasma generation system, a diagnosis system and a comprehensive control system. Wherein the combustion adjusting system comprises a premixing chamber and a combustion chamber which are sequentially communicated from bottom to top, a rectifying device and an igniter are arranged in the premixing chamber, and the rectifying device is used for controlling the uniformity degree of mixed gas; the combustion chamber comprises a microwave combustion-supporting area, an observation and diagnosis area and a product analysis area which are sequentially distributed from bottom to top, a back pressure valve is arranged at the top of the product analysis area, and the back pressure valve is used for regulating and controlling the reaction pressure in the combustion chamber. A stable and accurate comprehensive experiment platform is constructed, the influence of microwaves on metal and water reaction combustion can be better observed and researched, specific influence factors of the metal and water reaction combustion can be better analyzed, and researches about judgment of a combustion dominant mechanism and the like are powerfully promoted.

Description

Technical Field

[0001] The present application relates to an experimental platform for microwave plasma-assisted metal-water reaction, belonging to the technical field of combustion testing. Background Art

[0002] The new underwater power device uses high-energy metal propellant as fuel and rammed water as oxidant, which is an indispensable part of the ultra-high speed and ultra-long range of underwater vehicles. The higher the metal content in the propellant, the greater the propellant energy and the longer the range of the underwater vehicle. However, if the metal content in the propellant is further increased, the corresponding oxidant ammonium perchlorate (AP) will inevitably be greatly reduced, and the high-metal content propellant will be difficult to achieve self-sustaining combustion, and the start and maintenance of the metal-water reaction will be difficult. The reason is that the heat that can be released by the combustion of the propellant itself is limited, and water will absorb a lot of heat during the evaporation process, resulting in the combustion chamber environment not meeting the conditions for the violent reaction between metal and water, and unable to form energy positive feedback to the combustion surface, resulting in the cessation of the self-sustaining combustion of the propellant. External energy injection is an effective technical approach to broaden the self-sustaining stable combustion boundary of high-metal content propellants. On the basis of the existing underwater power device configuration, the integration of high-efficiency auxiliary combustion technology is of great significance to the development of underwater power.

[0003] In a combustion chamber environment with high temperature, high pressure, and full of gaseous and liquid water, microwave plasma-assisted combustion demonstrates unique advantages. On the one hand, high-power microwaves have significant thermal effects and can effectively heat water molecules and metal particles, thereby increasing the atomization and evaporation rate of water, the metal-water reaction, and the flame propagation speed. At the same time, ionized water vapor forms plasma, which provides free radicals such as OH and O for the oxidation reaction of the metal, increases the oxidation reaction rate of the metal, promotes heat release, and has a strong kinetic enhancement effect. On the other hand, microwave energy input does not require electrodes, and can achieve physical isolation from water in the structure, avoiding the risk of short-circuit failure. These advantages make microwave plasma-assisted combustion of high-metal content propellants and water reactions extremely promising for engineering applications.

[0004] However, the combustion chamber of an underwater power plant is a multi-phase complex environment containing metal particle combustion gas and water vapor atmosphere. For microwave plasma, its discharge mechanism is significantly different from that of a pure gas phase environment, and the discharge mechanism in the multi-phase complex environment of "solid-liquid-gas-plasma" is still poorly understood. However, there is currently no experimental platform for the above experimental research, making it difficult to conduct in-depth research on its specific mechanism.

[0005] Therefore, there is an urgent need to design a stable and accurate comprehensive experimental measurement platform for microwave plasma-assisted metal-water reaction fuel combustion. Summary of the invention

[0006] In order to solve the above problems, this application proposes an experimental platform for microwave plasma-assisted metal-water reaction. By setting up a combustion regulation system, a comprehensive fuel supply system, a microwave plasma generation system, a diagnostic system and an integrated control system, a stable and accurate comprehensive experimental platform is constructed, which can better observe and study the influence of microwaves on the combustion of metal-water reaction and analyze its specific influencing factors, and effectively promote research on determining its dominant combustion mechanism.

[0007] According to one aspect of the present application, there is provided an experimental platform for microwave plasma-assisted metal-water reaction, comprising a combustion regulation system, a fuel integrated supply system, a microwave plasma generation system, a diagnostic system and an integrated control system;

[0008] The combustion regulation system comprises a premixing chamber and a combustion chamber which are connected in sequence from bottom to top, a rectifying device and an igniter are arranged in the premixing chamber, and the rectifying device is used to control the uniformity of the mixed gas; the combustion chamber comprises a microwave combustion-assisted area, an observation and diagnosis area and a product analysis area which are distributed in sequence from bottom to top, a back pressure valve is arranged on the top of the product analysis area, and the back pressure valve is used to regulate the reaction pressure in the combustion chamber;

[0009] The comprehensive fuel supply system comprises a fuel supply device and a water vapor supply device, the fuel supply device and the microwave plasma generating system are arranged on both sides of the microwave combustion-assisted zone, and the water vapor supply device is communicated with the premixing chamber;

[0010] The diagnostic system comprises a detection device and a spectrum diagnostic device, the detection device is electrically connected to the spectrum diagnostic device, and the detection device and the observation diagnostic area are arranged on the same horizontal plane;

[0011] The integrated control system comprises a main control console and a sampling probe, wherein the sampling probe is electrically connected to the main control console and is arranged at one side of the product analysis area.

[0012] Optionally, the premixing chamber comprises a first mixing chamber and a second mixing chamber, the first mixing chamber is arranged at the bottom of the second mixing chamber, and the second mixing chamber is communicated with the microwave combustion-assisted zone;

[0013] The rectifying device is disposed between the first mixing chamber and the second mixing chamber.

[0014] Optionally, the rectifying device is a porous plate with evenly distributed holes.

[0015] It is very important to achieve uniform mixing of gases through the rectifier. Uneven mixing may lead to excessively violent or incomplete local reactions. Uniform mixing of gases can ensure that hydrogen and oxygen molecules have more suitable contact opportunities in the reaction area, making the reaction more complete and stable.

[0016] The porous plate is used as a rectifying device, so that when the gas passes through the porous plate, the speed and pressure of the gas will change due to the throttling effect of the small holes, thereby making the gas flow more uniform. For the mixture of hydrogen and oxygen, the porous plate can initially disrupt the uneven flow state that may exist when the two gases pass through, so that the gas molecules are more evenly distributed downstream of the porous plate.

[0017] Optionally, the water vapor supply device includes an air supply portion and a water supply portion, the air supply portion is communicated with the first mixing chamber, and the water supply portion is communicated with the second mixing chamber.

[0018] Preferably, the gas supply unit includes a hydrogen gas cylinder, an oxygen gas cylinder, a gas flow valve and corresponding gas delivery pipelines, and the carrier gas is supplied from the gas cylinder to the first mixing chamber via the gas flow valve.

[0019] Optionally, the microwave plasma generating system is connected to the microwave combustion-assisted zone via a glass window, and the fuel supply device is used to spray metal particles into the microwave combustion-assisted zone.

[0020] Preferably, the glass window is made of quartz, and the metal particles are magnesium particles.

[0021] Optionally, the microwave plasma generating system comprises a microwave source, a circulator, a three-screw adapter, a waveguide and a power meter, and the microwave source, the circulator, the three-screw adapter and the waveguide coaxial line are arranged in sequence.

[0022] Optionally, the microwave source is a solid-state microwave source for generating microwaves of a fixed frequency.

[0023] Specifically, the power meter is connected to the circulator, so that the solid-state microwave source generates microwaves of a fixed frequency, which are fed into the combustion chamber via the circulator, the three-screw mixer and the waveguide.

[0024] Optionally, a first observation window and a second observation window are symmetrically arranged on both sides of the observation and diagnosis area;

[0025] The detection device includes a sensor assembly and an optical detection assembly. The sensor assembly is used to monitor the temperature and pressure in the combustion chamber. The optical detection assembly is arranged on the same straight line as the first observation window and the second observation window.

[0026] Optionally, the sensor assembly includes a pressure sensor and a thermocouple; the optical detection assembly includes a laser, a lens and a high-speed camera, the laser and the lens are sequentially arranged on the outside of the first observation window, and the high-speed camera is arranged on the outside of the second observation window.

[0027] Optionally, the combustion adjustment system further comprises a fixing device, and the fixing device is used to connect and fix the combustion chamber and the premixing chamber.

[0028] The beneficial effects of this application include but are not limited to:

[0029] 1. The experimental platform for microwave plasma-assisted metal-water reaction provided in this application is helpful to systematically analyze the promoting effect of microwaves on the combustion of metal-water reaction and the influencing factors. This experimental platform can not only observe and analyze the direct effect of microwaves on the reaction, but also study other related influencing factors, which is helpful to further explore the reaction mechanism.

[0030] 2. The experimental platform for microwave plasma-assisted metal-water reaction provided in this application realizes flexible adjustment of plasma density by using a solid microwave source. By changing the output power of the microwave source, the experimenter can accurately control the density of the plasma, thereby simulating different experimental conditions and observing the specific effects of these variables on the metal-water reaction rate and combustion efficiency. This flexibility makes the experiment more targeted and repeatable, and can be used in a wide range of research.

[0031] 3. The microwave plasma-assisted metal-water reaction experimental platform provided in this application can flexibly adjust the pressure and flow of the combustion carrier gas by setting a gas flow valve, and realize the precise release of the gas after combustion by combining with the back pressure valve. This makes the setting of experimental conditions more flexible, can simulate different actual use scenarios, and improve the understanding of complex combustion processes.

[0032] 4. The microwave plasma-assisted metal-water reaction experimental platform provided in this application can effectively adjust the water vapor concentration in the combustion chamber by setting up a premixing chamber and a rectifying device, and simulate different gas environments, which is of great significance for studying the influence of different environments on the metal-water reaction.

[0033] By designing a porous structure and reasonable airflow guidance, we ensure that the gas is evenly mixed before entering the combustion chamber, avoiding incomplete or excessive local reactions, thereby enhancing the stability of the experiment. It can also simulate a variety of real operating environments and improve the applicability and reliability of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 Schematic diagram of the experimental platform for microwave plasma-assisted metal-water reaction according to an embodiment of the present application.

[0036] List of parts and reference numerals:

[0037] 1. Combustion chamber; 2. Premixing chamber; 3. Rectifier; 4. Ignitor; 5. Microwave combustion-supporting area; 6. Observation and diagnosis area; 7. Product analysis area; 8. Back pressure valve; 9. Fuel supply device; 10. Main control console; 11. Sampling probe; 12. First mixing chamber; 13. Second mixing chamber; 14. Hydrogen cylinder; 15. Oxygen cylinder; 16. Gas flow valve; 17. Water supply; 18. Microwave source; 19. Circulator; 20. Three-screw mixer; 21. Waveguide; 22. Power meter; 23. First observation window; 24. Second observation window; 25. Pressure sensor; 26. Thermocouple; 27. Laser; 28. Lens; 29. ​​High-speed camera; 30. Fixing device. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0039] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0041] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0045] refer to Figure 1 , the embodiment of the present application discloses an experimental platform for microwave plasma-assisted metal-water reaction, including a combustion regulation system, a fuel integrated supply system, a microwave plasma generation system, a diagnostic system and an integrated control system;

[0046] The combustion regulation system includes a premixing chamber 2 and a combustion chamber 1 which are connected in sequence from bottom to top. A rectifier 3 and an igniter 4 are arranged in the premixing chamber 2. The rectifier 3 is used to control the uniformity of the mixed gas. In this embodiment, hydrogen and oxygen are filled into the premixing chamber 2 according to a reaction equivalent ratio, and are ignited after being uniformly mixed by the rectifier 3 to simulate the high-temperature water vapor environment during the operation of the underwater power device.

[0047] The combustion chamber 1 is mainly an area for microwave discharge and the reaction and combustion of metal and water. The combustion chamber 1 includes a microwave combustion-assisted zone 5, an observation and diagnosis zone 6 and a product analysis zone 7 which are distributed from bottom to top. A back pressure valve 8 is arranged at the top of the product analysis zone 7. The combustion products are finally ejected by the back pressure valve 8. The back pressure valve 8 is used to regulate the reaction pressure in the combustion chamber 1.

[0048] This embodiment adopts an automatic spherical valve core back pressure valve 8, whose regulating mechanism is automatic, and the movement of the valve core is controlled by an electric actuator or a pneumatic actuator, and is suitable for occasions where the back pressure is frequently adjusted and the adjustment accuracy is required to be high. The valve core of this regulating valve is spherical, and the spherical valve core changes the contact area with the valve body by rotating during the adjustment process, thereby realizing the change of the flow cross-sectional area.

[0049] The comprehensive fuel supply system includes a fuel supply device 9 and a water vapor supply device. The fuel supply device 9 and the microwave plasma generating system are arranged on both sides of the microwave combustion-assisted zone 5, and the water vapor supply device is connected to the premixing chamber 2; the diagnostic system includes a detection device and a spectral diagnostic device. The detection device is electrically connected to the spectral diagnostic device, and the detection device and the observation diagnostic zone 6 are arranged on the same horizontal plane; the comprehensive control system includes a main control console 10 and a sampling probe 11. The sampling probe 11 is electrically connected to the main control console 10, and the sampling probe 11 is arranged on one side of the product analysis zone 7.

[0050] As an embodiment, the premixing chamber 2 includes a first mixing chamber 12 and a second mixing chamber 13, the first mixing chamber 12 is arranged at the bottom of the second mixing chamber 13, and the second mixing chamber 13 is connected to the microwave combustion-assisted zone 5; the rectifying device 3 is arranged between the first mixing chamber 12 and the second mixing chamber 13.

[0051] Furthermore, the rectifying device 3 is a porous plate with evenly distributed holes. The diameter, spacing and distribution density of the holes can be designed by those skilled in the art according to the flow rate, pressure and required mixing uniformity of hydrogen and oxygen.

[0052] In this combustion chamber, water vapor is transported from bottom to top. Since the wall is the cold end, part of the water vapor condenses near the inner surface. The overall flow field will show a flow trend with high density in the middle and low density around.

[0053] Specifically, the combustion chamber 1 and the porous plate are made of 304 stainless steel. The shape of the porous plate is a circular plate that matches the combustion chamber 1. The holes on the porous plate are distributed as follows: the middle part has a small aperture and the peripheral part has a large aperture; the middle part is an inner circle formed by half the radius, with an aperture of 1 mm, and the peripheral part is the remaining part of the porous plate, with an aperture of 2.3 mm. The igniter 4 uses a commercially available electric spark igniter 4, which is set on the side wall of the second mixing chamber 13, and is used to ignite the mixed gas, generate high-temperature water vapor, and simulate a high-temperature water vapor environment.

[0054] By setting the above-mentioned porous plate, it is possible to avoid energy loss caused by diffusion of the middle fluid to the surroundings, and also to limit the flow of the middle mainstream, making the mixing more uniform.

[0055] As an implementation manner, the water vapor supply device includes an air supply portion and a water supply portion 17 . The air supply portion is communicated with the first mixing chamber 12 , and the water supply portion 17 is communicated with the second mixing chamber 13 .

[0056] The gas supply part includes a hydrogen cylinder 14, an oxygen cylinder 15, a gas flow valve 16 and corresponding gas delivery pipelines. The carrier gas is supplied from the cylinder to the first mixing chamber 12 via the gas flow valve 16. The water supply part 17 is a water pump, which is used to adjust the reaction environment temperature in the combustion chamber 1 without changing the gas environment composition.

[0057] By adjusting the flow ratio of water inlet flow to hydrogen and oxygen to control the water vapor ambient temperature and water vapor concentration, a wide temperature range of 800-3000K can be achieved.

[0058] As an embodiment, the microwave plasma generating system is connected to the microwave combustion-supporting zone 5 through a glass window, and the fuel supply device 9 is used to spray metal particles into the microwave combustion-supporting zone 5. Specifically, the setting positions of the microwave plasma generating system and the fuel supply device 9 can be adjusted by those skilled in the art according to needs.

[0059] Furthermore, the microwave plasma generating system includes a microwave source 18, a circulator 19, a three-screw adapter 20, a waveguide 21 and a power meter 22. The microwave source 18, the circulator 19, the three-screw adapter 20 and the waveguide 21 are coaxially arranged in sequence.

[0060] Specifically, the glass window is a high-strength quartz glass window. On one side of the microwave combustion-assisted zone 5, a solid-state microwave source 18 generates microwaves of a fixed frequency, which are fed into the cavity through a circulator 19, a three-screw dispenser 20, and a waveguide 21. The three-screw dispenser 20 is adjusted to minimize the reflected power measured by the power meter 22. After the microwave excites the mixed gas to generate plasma, the output power of the microwave source 18 is changed to adjust the plasma density. On the other side of the microwave combustion-assisted zone 5, metal particles are ejected into the mainstream area of ​​high-temperature water vapor by piston-cylinder ejection. In this embodiment, the metal particles are magnesium particles.

[0061] As an implementation mode, a first observation window 23 and a second observation window 24 are symmetrically arranged on both sides of the observation and diagnosis area 6 for diagnosing the combustion state of magnesium. The material of the observation windows is high-strength quartz glass.

[0062] The detection device includes a sensor assembly and an optical detection assembly. The sensor assembly is used to monitor the temperature and pressure in the combustion chamber 1 . The optical detection assembly is arranged on the same straight line as the first observation window 23 and the second observation window 24 .

[0063] Specifically, the sensor assembly includes a pressure sensor 25 and a thermocouple 26. The pressure sensor 25 is arranged on a side close to the product analysis area 7, and the thermocouple 26 is arranged on a side close to the microwave combustion-assisted area 5. The optical detection assembly includes a laser 27, a lens 28, and a high-speed camera 29. The laser 27 and the lens 28 are arranged on the outside of the first observation window 23 in sequence, and the high-speed camera 29 is arranged on the outside of the second observation window 24, and is arranged in a straight line with the lens 28 and the two observation windows to facilitate the light path. The diagnostic process performed by the diagnostic system mainly uses a commercially available spectral diagnostic device to diagnose the combustion process of magnesium particles under the action of microwave plasma.

[0064] Diagnosis of magnesium particle combustion process under microwave plasma includes:

[0065] A. Temperature and distribution of condensed phase materials: The temperature distribution of condensed phase materials is obtained by analyzing the image information of condensed phase materials taken by high-speed photography using pseudo-color temperature measurement method;

[0066] B. Main components and distribution of condensed phase materials: The condensed phase materials are collected by quenching cooling at the downstream of the observation window, and analyzed by transmission electron microscopy and XRD to determine the components and distribution of the condensed phase materials;

[0067] C. Concentration distribution of OH radical species: OH-PLIF was used to diagnose the magnesium / water vapor multiphase reaction flow to obtain the concentration distribution of OH radicals in the flow field;

[0068] D. Flame structure: High-speed video is used to obtain the flame morphology of the combustion surface of magnesium particles.

[0069] In summary, the combustion process of magnesium in a water vapor environment is analyzed by combining the condensed phase particle temperature, condensed phase material composition distribution, OH radical concentration distribution and flame structure. Combined with the obtained reaction kinetic model, the dominant combustion mechanism can be determined.

[0070] As an implementation manner, the combustion adjustment system further includes a fixing device 30 , and the fixing device 30 is used to connect and fix the combustion chamber 1 and the premixing chamber 2 .

[0071] Specifically, the fixing device 30 is a bolt, and the combustion chamber 1 and the premixing chamber 2 are connected and fixed by bolts, and the connection is sealed by an O-ring of customized size made of perfluoroether material.

[0072] The experimental method of this experimental platform includes the following steps:

[0073] First, according to the actual experimental requirements, a certain equivalent ratio of hydrogen and oxygen is sprayed into the first mixing chamber 12 from the gas inlet. After being fully mixed by the rectifier 3, the mixed gas is ignited by the igniter 4 to generate high-temperature water vapor, simulating the high-temperature water vapor environment, and the water pump is turned on to adjust the flow rate of the injected liquid water to adjust the temperature to the temperature expected in this experiment. At the same time, the microwave plasma generation system is started, and the change of the plasma electric field intensity is realized by changing the power. The three-screw distributor 20 is adjusted to minimize the reflected power measured by the power meter 22, and the pressure is adjusted by adjusting the back pressure valve 8. When the pressure in the combustion chamber 1 tends to be stable, the fuel supply device 9 is turned on, and the piston cylinder is used to eject the magnesium particles into the mainstream area of ​​the high-temperature water vapor. At the same time, by changing the supply position of the magnesium powder, the characteristics of the magnesium powder at different stages in the combustion process can be diagnosed. The flame structure of the particles is obtained, and the change law of the surface temperature during the combustion of the particles is analyzed by the pseudo-color temperature measurement method.

[0074] The products of magnesium powder combustion at different stages will be sampled and collected by the sampling probe 11 of the product analysis area 7. After the experiment, the combustion products are subjected to electron microscope scanning analysis, energy spectrum analysis, etc., to further obtain more detailed information such as the morphological characteristics and composition structure of the combustion products, thereby achieving the corresponding experimental purpose.

[0075] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0076] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An experimental platform for microwave plasma-assisted metal-water reaction, characterized in that: It includes combustion regulation system, integrated fuel supply system, microwave plasma generation system, diagnostic system and integrated control system; The combustion regulation system comprises a premixing chamber and a combustion chamber which are connected in sequence from bottom to top, a rectifying device and an igniter are arranged in the premixing chamber, and the rectifying device is used to control the uniformity of the mixed gas; the combustion chamber comprises a microwave combustion-assisted area, an observation and diagnosis area and a product analysis area which are distributed in sequence from bottom to top, a back pressure valve is arranged on the top of the product analysis area, and the back pressure valve is used to regulate the reaction pressure in the combustion chamber; The comprehensive fuel supply system comprises a fuel supply device and a water vapor supply device, the fuel supply device and the microwave plasma generating system are arranged on both sides of the microwave combustion-assisted zone, and the water vapor supply device is communicated with the premixing chamber; The diagnostic system comprises a detection device and a spectrum diagnostic device, the detection device is electrically connected to the spectrum diagnostic device, and the detection device and the observation diagnostic area are arranged on the same horizontal plane; The integrated control system comprises a main control console and a sampling probe, wherein the sampling probe is electrically connected to the main control console and is arranged at one side of the product analysis area.

2. The microwave plasma assisted metal-water reaction experimental platform according to claim 1, characterized in that: The premixing chamber comprises a first mixing chamber and a second mixing chamber, the first mixing chamber is arranged at the bottom of the second mixing chamber, and the second mixing chamber is communicated with the microwave combustion-assisted zone; The rectifying device is disposed between the first mixing chamber and the second mixing chamber.

3. The experimental platform for microwave plasma-assisted metal-water reaction according to claim 1, characterized in that: The rectifying device is a porous plate with evenly distributed holes.

4. The microwave plasma assisted metal-water reaction experimental platform according to claim 2, characterized in that: The water vapor supply device includes an air supply part and a water supply part. The air supply part is communicated with the first mixing chamber, and the water supply part is communicated with the second mixing chamber.

5. The microwave plasma assisted metal-water reaction experimental platform according to claim 1, characterized in that: The microwave plasma generating system is connected to the microwave combustion-assisted zone via a glass window, and the fuel supply device is used for spraying metal particles into the microwave combustion-assisted zone.

6. The microwave plasma assisted metal-water reaction experimental platform according to claim 1, characterized in that: The microwave plasma generating system comprises a microwave source, a circulator, a three-screw adapter, a waveguide and a power meter. The microwave source, the circulator, the three-screw adapter and the waveguide coaxial line are arranged in sequence.

7. The microwave plasma assisted metal-water reaction experimental platform according to claim 6, characterized in that: The microwave source is a solid-state microwave source, which is used to generate microwaves of a fixed frequency.

8. The microwave plasma assisted metal-water reaction experimental platform according to claim 1, characterized in that: A first observation window and a second observation window are symmetrically arranged on both sides of the observation and diagnosis area; The detection device includes a sensor assembly and an optical detection assembly. The sensor assembly is used to monitor the temperature and pressure in the combustion chamber. The optical detection assembly is arranged on the same straight line as the first observation window and the second observation window.

9. The microwave plasma assisted metal-water reaction experimental platform according to claim 8, characterized in that: The sensor assembly includes a pressure sensor and a thermocouple; The optical detection assembly includes a laser, a lens and a high-speed camera. The laser and the lens are sequentially arranged outside the first observation window, and the high-speed camera is arranged outside the second observation window.

10. The microwave plasma assisted metal-water reaction experimental platform according to claim 1, characterized in that: The combustion adjustment system further comprises a fixing device, which is used for connecting and fixing the combustion chamber and the premixing chamber.

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