Testing device for studying combustion characteristics of nanofluid fuel

Abstract

The invention relates to the technical field of combustion testing, in particular to a testing device for studying the combustion characteristic of nanofluid fuel. The device comprises an operation table, wherein a convenient combustion adjusting mechanism and a waste gas treatment assembly are mounted on the upper surface of the operation table; the convenient combustion adjusting mechanism comprises a storage tank and a combustion chamber, a pump body is arranged between the storage tank and the combustion chamber, a connecting pipeline is connected between the storage tank and the pump body, a pressure adjusting assembly is arranged between the pump body and the combustion chamber, and an outlet of the combustion chamber is connected with a waste gas treatment assembly; a combustion component and an igniter are arranged on the top of the inner side of the combustion chamber. According to the pressure adjusting assembly, fuel flowing and gas supply can be effectively controlled, the combustion process is stable, accurate test conditions are achieved, the reliability of test results is improved, and fuel performance can be deeply analyzed conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of combustion testing, in particular to a testing device for studying the combustion characteristics of nanofluid fuel. Background Art

[0002] With the increasing emphasis on energy efficiency and environmental protection, nanofluid fuel has gradually attracted attention as a new type of fuel. This fuel aims to improve thermal conductivity and combustion efficiency by adding nanoparticles to a liquid matrix. However, existing nanofluid fuel combustion characteristics test devices still have some obvious shortcomings in practical applications.

[0003] First, many existing devices lack effective control over fuel flow and gas supply, resulting in an unstable combustion process and difficulty in achieving precise experimental conditions. This affects the reliability of the test results and makes it difficult to use them for in-depth analysis of fuel performance. Second, traditional combustion chamber designs are usually unable to effectively monitor internal temperature and pressure distributions, limiting a comprehensive understanding of combustion characteristics. Such devices, which lack detailed monitoring, cannot provide sufficient data support for optimizing the combustion characteristics of nanofluid fuels. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies in the prior art and provide a test device for studying the combustion characteristics of nanofluid fuels, which can effectively control the fuel flow and gas supply, stabilize the combustion process, achieve precise test conditions, and improve the reliability of the test results, so as to facilitate in-depth analysis of fuel performance; secondly, the device can effectively monitor the temperature and pressure distribution inside the combustion chamber, realize comprehensive monitoring of the combustion characteristics, and provide sufficient data support for optimizing the combustion characteristics of nanofluid fuels.

[0005] The technical solution adopted by the present invention to solve the technical problem is: A test device for studying the combustion characteristics of nanofluid fuel, comprising an operating table, on the surface of which a combustion convenience adjustment mechanism and an exhaust gas treatment component are installed; the combustion convenience adjustment mechanism comprises a storage tank and a combustion chamber, a pump body is arranged between the storage tank and the combustion chamber, a connecting pipe is connected between the storage tank and the pump body, a pressure regulating component is arranged between the pump body and the combustion chamber, and an exhaust gas treatment component is connected to the outlet of the combustion chamber; The pressure regulating assembly comprises a delivery pipeline and an air compressor, one end of the delivery pipeline is connected to the pump body outlet, and the other end of the delivery pipeline is connected to the top of the combustion chamber; a flow regulating valve is installed on the delivery pipeline, and an air pipeline is connected between the air outlet of the air compressor and the air inlet of the flow regulating valve; The top of the inner side of the combustion chamber is provided with a combustion component and an igniter, and the combustion component is connected with the conveying pipeline; A controller is also installed on the upper surface of the operating table. The pump body, igniter, air compressor and flow regulating valve are electrically connected to the controller respectively, and the controller is externally connected to a power supply.

[0006] Furthermore, a first pressure sensor is installed on the delivery pipeline, the first pressure sensor is arranged close to the outlet of the flow regulating valve, and the first pressure sensor is electrically connected to the controller.

[0007] Furthermore, the inner wall of the combustion chamber is provided with a pressure sensor group and a temperature sensor group, and the pressure sensor group and the temperature sensor group are symmetrically arranged about the longitudinal center axis of the combustion chamber; the pressure sensor group is composed of a number of longitudinally distributed second pressure sensors, and the temperature sensor group is composed of a number of longitudinally distributed temperature sensors, and the second pressure sensor and the temperature sensor are electrically connected to the controller respectively.

[0008] Furthermore, the exhaust gas treatment component includes an exhaust pipe installed at the outlet of the combustion chamber, the outlet end of the exhaust pipe is connected to a filter, the outlet end of the filter is connected to a condenser, and an exhaust header is provided on the top of the condenser.

[0009] Furthermore, an observation window is provided on the side wall of the combustion chamber.

[0010] Furthermore, a support frame for supporting the entire testing device is installed on the lower surface of the operating table.

[0011] Furthermore, the combustion component is a nozzle, and the nozzle thread is installed on the top of the inner side of the combustion chamber.

[0012] Furthermore, the combustion component is a corundum tube equipped with silicon carbide wire, and the corundum tube is threadedly installed on the top of the inner side of the combustion chamber; and a heating module is installed on the bottom of the inner side of the combustion chamber.

[0013] Furthermore, the condenser is arranged above the filter, and the air inlet at the bottom of the condenser is connected to the air outlet at the top of the filter through a pipeline.

[0014] Furthermore, the lower surface of the condenser is provided with supporting feet for supporting the condenser, and the supporting feet are installed on the upper surface of the operating table.

[0015] The beneficial effects of the present invention are as follows: the present invention is reasonably designed and has the following advantages: (1) Nanofluid fuel is stored in a storage tank and transported to the combustion chamber through a pump. During this process, the pump and pressure regulating assembly ensure that the pressure and flow of the fuel are within the set range, thereby achieving a stable supply. At the same time, the air compressor provides the necessary air support to the combustion chamber, and the air flow is precisely adjusted through the flow regulating valve. This mixture of fuel and air optimizes the combustion process, ensures that the fuel is fully burned, and maximizes thermal efficiency. Multiple sensors in the combustion chamber monitor the pressure and temperature changes during the combustion process in real time and feed the data back to the controller. The controller automatically adjusts the working status of the pump, igniter and air compressor according to the sensor data to maintain the stability and safety of the combustion process. The exhaust gas generated during the combustion process enters the exhaust gas treatment assembly through the exhaust pipe, and is treated by the filter and condenser to ensure that harmful substances are removed and meet environmental protection standards. Finally, the treated exhaust gas is safely discharged through the exhaust head, completing the entire test process; (2) Through the pressure regulating component, the fuel flow and gas supply can be effectively controlled, the combustion process is stable, and accurate test conditions are achieved, which improves the reliability of the test results and facilitates in-depth analysis of fuel performance; secondly, the second pressure sensor and temperature sensor can effectively monitor the temperature and pressure distribution inside the combustion chamber, realize comprehensive monitoring of the combustion characteristics, and provide sufficient data support for optimizing the combustion characteristics of nanofluid fuels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods 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 is a schematic structural diagram of Example 1; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 1 The enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the structure inside the combustion chamber of the present invention; Figure 5 yes Figure 4 The enlarged view of point B in the middle; Figure 6 is a schematic diagram of the structure of the filter in Example 1; Figure 7 is a schematic diagram of the structure of the sample temperature curve in Example 1; Figure 8 is a schematic diagram of the temperature and second differential curve of the JP-10 droplet in Example 1; Fig. 9 is a schematic diagram of the structure of the sample ignition delay time in Example 1; Fig.10 is a schematic diagram of the structure of the sample ignition temperature in Example 1; Fig.11 It is a structural schematic diagram of the combustion process image in Example 1.

[0018] In the figure: 1. Support frame; 2. Operating table; 3. Convenient combustion adjustment mechanism; 31. Storage tank; 32. Combustion chamber; 321. Second pressure sensor; 322. Temperature sensor; 33. Pump body; 34. Connecting pipe; 35. Pressure regulating assembly; 351. Delivery pipe; 3511. First pressure sensor; 352. Air compressor; 3521. Air pipe; 353. Flow regulating valve; 36. Nozzle; 37. Ignitor; 4. Exhaust gas treatment assembly; 41. Filter; 42. Exhaust pipe; 43. Support foot; 44. Condenser. DETAILED DESCRIPTION

[0019] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this description, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0022] Example 1 like Figure 1 to Figure 6A test device for studying the combustion characteristics of nanofluid fuel is shown, comprising an operating table 2, on the upper surface of which a combustion convenience adjustment mechanism 3 and an exhaust gas treatment component 4 are installed; the combustion convenience adjustment mechanism 3 comprises a storage tank 31 and a combustion chamber 32, a pump body 33 is arranged between the storage tank 31 and the combustion chamber 32, a connecting pipe 34 is connected between the storage tank 31 and the pump body 33, a pressure regulating component 35 is arranged between the pump body 33 and the combustion chamber 32, and the exhaust gas treatment component 4 is connected to the outlet of the combustion chamber 32. The pressure regulating component 35 comprises a delivery pipeline 351 and an air compressor 352, one end of the delivery pipeline 351 is connected to the outlet of the pump body 33, and the other end of the delivery pipeline 351 is connected to the top of the combustion chamber 32; a flow regulating valve 353 is installed on the delivery pipeline 351, and an air pipeline 3521 is connected between the air outlet of the air compressor 352 and the air inlet of the flow regulating valve 353. A combustion component and an igniter 37 are provided on the inner top of the combustion chamber 32, and the combustion component is connected to the delivery pipeline 351; a controller 5 is also installed on the upper surface of the operating table 2, and the pump body 33, the igniter 37, the air compressor 352 and the flow regulating valve 353 are electrically connected to the controller 5 respectively, and the controller 5 is externally connected to a power supply. A support frame 1 supporting the entire test device is installed on the lower surface of the operating table 2.

[0023] It should be noted that the structure of the support frame 1 should take into account the mechanical stress that may be generated during the experiment, and use high-strength alloy materials to ensure stability under extreme conditions. The design of the operating table 2 needs to meet laboratory safety standards and have good corrosion resistance and high temperature resistance to adapt to the properties of different fuels. The combustion convenience adjustment mechanism 3 achieves precise control of the combustion process through efficient fluid delivery and gas mixing, and the exhaust gas treatment component 4 ensures that there will be no pollution to the environment during the experiment, thereby improving the safety and environmental protection of the laboratory.

[0024] The delivery pipeline 351 needs to have good sealing properties to prevent leakage and be flexible enough to facilitate subsequent maintenance and replacement. The selection of the air compressor 352 should ensure that it can work stably within different pressure ranges and be equipped with an overload protection device to improve safety. The design of the flow control valve 353 needs to be easy to operate to achieve fast and accurate flow regulation to meet different experimental requirements.

[0025] A first pressure sensor 3511 is installed on the delivery pipeline 351 . The first pressure sensor 3511 is arranged close to the outlet of the flow regulating valve 353 . The first pressure sensor 3511 is electrically connected to the controller 5 .

[0026] It should be noted that the setting of the first pressure sensor 3511 can not only monitor the pressure of the fluid in real time, but also connect to the control system through a data feedback mechanism to ensure that an alarm is immediately issued when the pressure is abnormal. This real-time monitoring function is crucial to ensure the safety of the experiment, and also provides a reliable basis for subsequent data analysis. In addition, the selection of the sensor should ensure that it has high accuracy and stability to cope with variable experimental conditions.

[0027] A pressure sensor group and a temperature sensor group are provided on the inner wall of the combustion chamber 32, and the pressure sensor group and the temperature sensor group are symmetrically arranged about the longitudinal center axis of the combustion chamber 32; the pressure sensor group is composed of a plurality of longitudinally distributed second pressure sensors 321, and the temperature sensor group is composed of a plurality of longitudinally distributed temperature sensors 322, and the second pressure sensors 321 and the temperature sensors 322 are electrically connected to the controller 5 respectively.

[0028] It should be noted that the layout design of multiple sensors in the combustion chamber 32 must fully consider the uniformity of the combustion process and the uniformity of heat distribution so that accurate temperature and pressure data can be obtained. These sensors will monitor the combustion state in real time, and the data acquisition frequency should be high enough to capture instantaneous changes in the combustion process in time and provide more detailed information for experimental data analysis. The selection of sensors should have the characteristics of high temperature resistance and corrosion resistance to ensure its stability and reliability in harsh environments.

[0029] The electrical connection between the controller 5 and each component should adopt an anti-interference design to ensure stable operation under high temperature and high pressure environment, thereby maximizing the reliability and safety of the system.

[0030] The exhaust gas treatment component 4 includes an exhaust pipe 42 installed at the outlet of the combustion chamber 32. The outlet end of the exhaust pipe 42 is connected to a filter 41. The outlet end of the filter 41 is connected to a condenser 44. The top of the condenser 44 is provided with an exhaust header.

[0031] It should be noted that the material of the filter 41 should have high-efficiency filtering ability and high-temperature resistance to ensure that it will not fail during long-term operation. The design of the exhaust duct 42 needs to be reasonably laid out to avoid air flow resistance and ensure that the exhaust gas can be discharged smoothly. The condenser 44 should adopt high-efficiency heat exchange technology to maximize the recovery of heat in the exhaust gas and convert it into usable heat energy to further improve the overall energy efficiency.

[0032] An observation window is provided on the side wall of the combustion chamber 32. The window is made of quartz glass, which is convenient for using a camera to shoot the entire ignition process of the droplets.

[0033] The condenser 44 is arranged above the filter 41, and the air inlet at the bottom of the condenser 44 is connected to the exhaust port at the top of the filter 41 through a pipeline. The exhaust head should have the function of preventing the reverse flow of the airflow to protect the condenser and other components from being affected. In addition, the structural design of the exhaust head should take into account the convenience of maintenance, so as to facilitate daily maintenance and cleaning, thereby improving the overall working efficiency of the system.

[0034] A support leg 43 for supporting the condenser 44 is disposed on the lower surface of the condenser 44 , and the support leg 43 is installed on the upper surface of the operating table 2 .

[0035] Under normal conditions, the combustion component is a nozzle 36, which is threadedly mounted on the top of the inner side of the combustion chamber. When the hanging drop method is required for combustion testing, the nozzle 36 can be removed and a corundum tube with a silicon carbide wire can be installed, and liquid droplets are hung on the silicon carbide wire. At the same time, a heating module is installed at the inner bottom of the combustion chamber 32 to achieve combustion testing through high-temperature heating.

[0036] The test device of this embodiment is used to study the combustion characteristics of nanofluid fuel, specifically: Reagents: JP-10 and aluminum nanoparticles (Al NPs).

[0037] Samples: JP-10 and Al / JP-10 nanofluid fuels.

[0038] Experimental conditions: combustion chamber pressure: 1 atmosphere; combustion chamber temperature: 700, 750 and 800 °C.

[0039] Experimental process: Before the droplet enters the combustion chamber, the temperature collector is triggered to measure the gas phase response temperature of the droplet combustion in real time. The temperature collector records data every 40 ms. At the same time, the high-speed camera is started to record the ignition and combustion process of the droplet. The resolution of the high-speed camera is 1280*800 and the frame rate is 1000 fps. By analyzing the second differential of the droplet combustion gas phase response temperature curve, the ignition delay time and ignition temperature of the droplet can be determined. Finally, the droplet combustion video is converted into a picture to analyze the phenomena and micro-explosion details during the droplet combustion process.

[0040] Figure 7 The temperature change curves of the two samples in a combustion chamber environment at 700 °C. The blue curve is the temperature change curve of the JP-10 droplet, and the red curve is the temperature change curve of the Al / JP-10 droplet. After the droplet enters the combustion chamber from room temperature, it absorbs heat, the temperature rises, and it is ignited after reaching the ignition point and begins to burn. The temperature rises sharply until it reaches the highest temperature. After the droplet is burned out, the temperature begins to drop.

[0041] Definition of ignition delay time and ignition temperature: By performing second-order differential processing on the temperature curve, we can observe that the horizontal axis difference between the two highest peaks at the beginning of the second-order differential curve is the ignition delay time τ. The vertical axis value on the temperature curve corresponding to the second peak is defined as the ignition temperature T.

[0042] Figure 8 The temperature (T) and the second differential curve (Tg") of the JP-10 droplet at 700 °C. The temperature curve corresponding to the first peak of the second differential curve is the temperature at which the droplet enters the combustion chamber from room temperature, and the temperature curve corresponding to the second peak of the second differential curve is the temperature at which the droplet begins to ignite and burn.

[0043] Experimental results: At any ambient temperature, Al NPs can significantly shorten the ignition delay time and reduce the ignition temperature of JP-10 droplets.

[0044] Fig. 9 The figure shows the comparison of the ignition delay time of the two samples at different ambient temperatures. At 700 °C, the ignition delay time of the JP-10 droplets with the addition of AlNPs was reduced by 0.552 s compared with the pure JP-10 droplets, a decrease of 38.98%. At 750 °C, the ignition delay time of the Al / JP-10 droplets was 0.104 s shorter than that of the pure JP-10 droplets, a decrease of 16.46%. At 800 °C, the ignition delay time of the Al / JP-10 droplets was 0.12 s shorter than that of the JP-10 droplets, a decrease of 31.25%. This effect is attributed to the high thermal conductivity of Al NPs, which promotes the evaporation of JP-10 droplets and accelerates the vaporization rate of the molecules on the surface of the droplets, thereby increasing the concentration of fuel vapor in the air and making the ignition process of the droplets easier.

[0045] Fig.10 The figure is a comparison of the ignition temperatures of the two samples at different ambient temperatures. At 700 °C, the ignition temperature of the Al / JP-10 mixed droplets is 31.86 °C lower than that of the pure JP-10 droplets, a decrease of 18.79%. At 750 °C, the ignition temperature of the Al / JP-10 droplets is 4.96 °C lower than that of the pure JP-10 droplets, a decrease of 4.11%. At 800 °C, the ignition temperature of the Al / JP-10 droplets is 16.88 °C lower than that of the JP-10 droplets, a decrease of 17.20%. These data show that the addition of Al NPs effectively reduces the ignition temperature of JP-10 droplets and improves their combustion performance.

[0046] Fig.11 The images of the combustion process of JP-10 droplets and Al / JP-10 droplets at 750 °C are shown.

[0047] Sample #1 is an image of the combustion process of a JP-10 droplet. Its combustion process follows the traditional three stages of ignition, stable combustion, and extinction. The ignition of the JP-10 droplet occurs in the downstream area of ​​the droplet, which can be attributed to the fact that in the absence of convection, the fuel vapor released by the droplet diffuses outward in a spherically symmetrical form; under the influence of convection and gravity, the fuel vapor generated by the droplet is carried to the downstream area. When the temperature of this area reaches the ignition threshold, ignition is triggered. Since the ignition process is relatively rapid under convection conditions, the droplet ignition area observed in the experiment is mainly located downstream of the droplet. After ignition occurs, the droplet enters the stable combustion stage, at which time the flame presents a significant yellow cone, which is a typical feature of hydrocarbon fuel combustion. The top of the flame is orange-red, which is a sign of carbon black combustion. At the same time, black smoke is generated during the combustion process, indicating that the hydrocarbon fuel has been incompletely burned. According to formula (1-1), the complete combustion of JP-10 requires sufficient oxygen, but the high-temperature furnace used in this experiment is a closed system and cannot provide sufficient oxygen in a short time, resulting in the inability of JP-10 to achieve complete combustion. Finally, the JP-10 droplet extinguished after stably burning for 1.634 s, and the soot gradually dissipated as the flame disappeared.

[0048] (1-1) Sample #2 is an image of the combustion process of Al / JP-10 droplets. Its combustion process is divided into four stages: ignition, stable flame, micro-explosion, Al NPs combustion, and final extinction. After the flame stabilizes, as the JP-10 molecules in the outermost layer of the droplet gradually burn out, Al NPs begin to migrate to the edge of the droplet to form a core-shell structure. Under the dual effects of furnace temperature and Al NPs radiation heat energy, JP-10 molecules quickly vaporize and produce bubbles. When the pressure inside the bubble accumulates to a certain level, the bubble ruptures to trigger a micro-explosion, and the core-shell structure is blown apart by the explosive force. Subsequently, a small amount of droplets and Al NPs are scattered with the shock wave and emit dazzling white light during the combustion process. The oxidation combustion reaction of Al NPs is shown in Equation (1-2), and this process further intensifies the intensity of the overall combustion. The micro-explosion mechanism of Al / JP-10 droplets is different from that of SP80 / JP-10 droplets, which is mainly attributed to the high thermal conductivity of Al NPs, which transfer the absorbed radiant heat energy to the surrounding JP-10 droplets, causing them to boil and generate bubbles, thus initiating micro-explosions. At the end of the combustion process, i.e., at 1.769 s, the agglomeration and falling of Al NPs can be observed, which is mainly due to the products formed by the incomplete combustion of Al NPs.

[0049] (1-2) In summary, the present invention is reasonably designed and has the following advantages: (1) The nanofluid fuel is stored in a storage tank 31 and transported to the combustion chamber 32 through a pump body 33. During this process, the pump body 33 and the pressure regulating assembly 35 ensure that the pressure and flow of the fuel are within the set range, thereby achieving a stable supply. At the same time, the air compressor 352 provides the necessary air support to the combustion chamber 32, and the air flow is precisely regulated through the flow regulating valve 353. This mixture of fuel and air optimizes the combustion process, ensures that the fuel is fully burned, and maximizes thermal efficiency. Multiple sensors in the combustion chamber 32 monitor the pressure and temperature changes during the combustion process in real time, and feed the data back to the controller 5. The controller 5 automatically adjusts the working state of the pump body 33, the igniter 37 and the air compressor 352 according to the sensor data to maintain the stability and safety of the combustion process. The exhaust gas generated during the combustion process enters the exhaust gas treatment assembly 4 through the exhaust pipe 42, and is treated by the filter 41 and the condenser 44 to ensure that harmful substances are removed and meet environmental protection standards. Finally, the treated exhaust gas is safely discharged through the exhaust head, completing the entire test process; (2) Through the pressure regulating component 35, the fuel flow and gas supply can be effectively controlled, the combustion process is stable, and accurate test conditions are achieved, thereby improving the reliability of the test results and facilitating in-depth analysis of the fuel performance; secondly, the second pressure sensor 321 and the temperature sensor 322 can effectively monitor the temperature and pressure distribution inside the combustion chamber 32, realize comprehensive monitoring of the combustion characteristics, and provide sufficient data support for optimizing the combustion characteristics of the nanofluid fuel.

[0050] 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test device for studying the combustion characteristics of nanofluid fuel, characterized by: The operating table (2) comprises an operating table (2), wherein a combustion convenience adjustment mechanism (3) and an exhaust gas treatment component (4) are mounted on the upper surface of the operating table (2); the combustion convenience adjustment mechanism (3) comprises a material storage tank (31) and a combustion chamber (32); a pump body (33) is provided between the material storage tank (31) and the combustion chamber (32); a connecting pipe (34) is connected between the material storage tank (31) and the pump body (33); a pressure adjustment component (35) is provided between the pump body (33) and the combustion chamber (32); and the exhaust gas treatment component (4) is connected to the outlet of the combustion chamber (32); The pressure regulating assembly (35) comprises a delivery pipeline (351) and an air compressor (352); one end of the delivery pipeline (351) is connected to the outlet of the pump body (33), and the other end of the delivery pipeline (351) is connected to the top of the combustion chamber (32); a flow regulating valve (353) is installed on the delivery pipeline (351); an air pipeline (3521) is connected between the air outlet of the air compressor (352) and the air inlet of the flow regulating valve (353); A combustion component and an igniter (37) are provided on the inner top of the combustion chamber (32), and the combustion component is in communication with the delivery pipeline (351); A controller (5) is also installed on the upper surface of the operating table (2); the pump body (33), the igniter (37), the air compressor (352) and the flow regulating valve (353) are electrically connected to the controller (5) respectively; and the controller (5) is externally connected to a power source.

2. A test device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: A first pressure sensor (3511) is installed on the delivery pipeline (351). The first pressure sensor (3511) is arranged close to the outlet of the flow regulating valve (353). The first pressure sensor (3511) is electrically connected to the controller (5).

3. A test device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: A pressure sensor group and a temperature sensor group are provided on the inner wall of the combustion chamber (32), and the pressure sensor group and the temperature sensor group are symmetrically arranged about the longitudinal center axis of the combustion chamber (32); the pressure sensor group is composed of a plurality of longitudinally distributed second pressure sensors (321), and the temperature sensor group is composed of a plurality of longitudinally distributed temperature sensors (322), and the second pressure sensors (321) and the temperature sensors (322) are electrically connected to the controller (5), respectively.

4. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: The exhaust gas treatment component (4) comprises an exhaust pipe (42) installed at the outlet of the combustion chamber (32), the outlet end of the exhaust pipe (42) is connected to a filter (41), the outlet end of the filter (41) is connected to a condenser (44), and an exhaust header is provided on the top of the condenser (44).

5. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: An observation window is provided on the side wall of the combustion chamber (32).

6. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: A support frame (1) for supporting the entire testing device is installed on the lower surface of the operating table (2).

7. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: The combustion component is a nozzle (36), and the nozzle (36) is threadedly mounted on the top of the inner side of the combustion chamber (32).

8. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 1, characterized in that: The combustion component is a corundum tube filled with silicon carbide wire, and the corundum tube is threadedly mounted on the top of the inner side of the combustion chamber (32); a heating module is mounted on the bottom of the inner side of the combustion chamber (32).

9. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 4, characterized in that: The condenser (44) is arranged above the filter (41), and the air inlet at the bottom of the condenser (44) is connected to the air outlet at the top of the filter (41) through a pipeline.

10. A testing device for studying the combustion characteristics of nanofluid fuel according to claim 4, characterized in that: The lower surface of the condenser (44) is provided with a supporting foot (43) for supporting the condenser (44), and the supporting foot (43) is installed on the upper surface of the operating table (2).

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