Optimized evaluation method and device for gas combustion characteristic determination experiments

Abstract

The application relates to an optimization evaluation method and device for gas combustion characteristic determination experiments, which comprises the following steps: performing a gas combustion characteristic determination experiment through a control variable method, obtaining corresponding experimental results, adding an evaluation label to the experimental results, describing the relationship between the experimental results and experimental variables by using an ER graph, and establishing a sample library; traversing the sample library, screening out optimal experimental variable combinations corresponding to different screening variable values according to a set screening variable through the evaluation label, and constructing an optimal result library; searching for a sample closest to to-be-evaluated experimental variable data in the optimal result library, judging whether the to-be-evaluated experimental variable combination is an optimal combination, and realizing evaluation of a to-be-evaluated experimental scheme; and if the sample closest to the to-be-evaluated experimental variable data cannot be searched in the optimal result library, the sample library is expanded according to the to-be-evaluated experimental scheme. The application provides optimization guidance for gas combustion characteristic determination and improves the experimental success rate.

Description

Technical Field

[0001] The present invention relates to the technical field of gas combustion characteristic measurement, and in particular to an optimization evaluation method and device for a gas combustion characteristic measurement experiment. Background Art

[0002] Combustion science is the study of combustion phenomena, practices, and theories. Combustion science is an important technical foundation course in the curriculum of energy and power engineering majors in universities. It is based on knowledge from courses in chemistry, heat transfer, fluid mechanics, and other subjects. Currently, some combustion characteristic testing platforms, while providing a control interface for fuel and combustion-supporting gas ratios, lack a reference data table for fuel and combustion-supporting gas ratios. This prevents users from quickly and accurately finding the optimal ratio during experiments. Furthermore, there is a lack of mechanisms for evaluating and optimizing combustion experiment results, making it impossible to meet the needs of combustion science experimental research and teaching. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides an optimization evaluation method and device for gas combustion characteristics measurement experiments, the purpose of which is to provide optimization guidance for gas combustion characteristics measurement and improve the success rate of the experiment.

[0004] The technical solution adopted in the present invention is as follows:

[0005] The present invention provides an optimization evaluation method for a gas combustion characteristic measurement experiment, comprising the following steps:

[0006] S1. Establish a sample library, including:

[0007] Conduct gas combustion characteristic measurement experiments using the control variable method to obtain corresponding experimental results, and add evaluation labels to the experimental results; use ER diagrams to describe the relationship between experimental results and experimental variables;

[0008] The experimental variables include fuel type, fuel flow, fuel pressure, combustion-supporting gas flow, combustion-supporting gas pressure, mixed gas temperature, and combustion equipment specifications; the experimental results are characterized by flame state information displayed by the flame combustion image; and the evaluation label is a flame quality evaluation obtained by analyzing the flame combustion image;

[0009] S2. Obtain the optimal result library, including:

[0010] Traversing the sample library, and based on the set screening variables and the evaluation tags, screening out the optimal experimental variable combinations corresponding to different screening variable values, and constructing the optimal result library;

[0011] The screening variables include one or a combination of several of the experimental variables;

[0012] S3. Acquire experimental variable data of the gas combustion characteristics measurement experimental scheme to be evaluated, search the optimal result library for a sample closest to the experimental variable data to be evaluated, determine whether the experimental variable combination to be evaluated is the optimal combination, and evaluate the experimental scheme to be evaluated;

[0013] S4. If it is impossible to search for a sample closest to the experimental variable data to be evaluated in the optimal result library, perform the gas combustion characteristic measurement experiment for the scheme to be evaluated, obtain corresponding flame combustion images and flame quality evaluation, add the evaluation label to the experimental results of the experimental scheme to be evaluated to form a new sample, and add the new sample to the sample library.

[0014] Further technical solutions are:

[0015] Searching the optimal result library for a sample closest to the experimental variable data to be evaluated, determining whether the experimental variable combination to be evaluated is the optimal combination, and evaluating the experimental plan to be evaluated, including:

[0016] If the error between the experimental variable data to be evaluated and the experimental variable values ​​in the closest sample does not exceed the set value, the experimental variable combination of the experimental variable data to be evaluated is considered to be the best ratio, and a qualified evaluation result is fed back;

[0017] If the error between the experimental variable data to be evaluated and one or more experimental variable values ​​in the closest sample exceeds a set value, an optimization scheme for the experimental scheme to be evaluated is given based on the comparison error.

[0018] The flame quality evaluation is obtained by analyzing the flame combustion image, including:

[0019] Using an image recognition model to identify the flame combustion image, and evaluating the experimental results based on the flame state information in the image;

[0020] The image recognition model takes a flame combustion image with an evaluation label added as input and an evaluation prediction category as output, and is obtained based on neural network training and learning.

[0021] The flame state information includes outer flame height, inner flame height, flow state, and flame color.

[0022] The establishing of the sample library further includes:

[0023] Define the table structure of the sample library, including field names, data types, and constraints. The field names include number, person name, time, experimental variables, experimental results, and evaluation labels.

[0024] Choose storage structure and indexing strategy;

[0025] Use SQL statements to create tables and enter initial data;

[0026] Back up table data regularly.

[0027] A gas combustion characteristics measurement experimental device for implementing the method, the device comprising a gas mixing module, a combustion stability demonstration module, a flame propagation speed demonstration module, an image capture module, and an experimental evaluation and optimization guidance module;

[0028] The gas mixing module includes a combustible gas storage tank and a combustion-supporting gas storage tank, the two storage tanks are respectively connected to the first end of the mixed gas pipeline through a branch line, and the second end of the mixed gas pipeline is respectively connected to the combustion stability demonstration module and the flame propagation speed demonstration module;

[0029] The branch line connected to the combustible gas storage tank is provided with a gas pressure reducing valve, a gas flow meter, and a gas pressure measuring point in sequence; the branch line connected to the combustion-supporting gas storage tank is provided with a combustion-supporting gas pressure reducing valve, a combustion-supporting gas flow meter, and a combustion-supporting gas pressure measuring point in sequence; the mixed gas pipeline is provided with a mixed gas pressure measuring point;

[0030] The combustion stability demonstration module includes a plurality of flame burners with different cross-sectional sizes, the inlet of each flame burner is respectively connected to the second end of the mixed gas pipeline, and a first flow control valve is provided on the connecting pipeline;

[0031] The flame propagation speed demonstration module includes multiple transparent combustion tubes with different diameters. The inlet end of each transparent combustion tube is provided with a turbulent flow burner corresponding to the tube diameter. The inlet of each turbulent flow burner is respectively connected to the second end of the mixed gas pipeline, and a second flow control valve is provided on the connecting pipeline; an ignition device is provided at the end of each transparent combustion tube;

[0032] The image shooting module includes a high-definition camera, which is used to shoot the flame burner to obtain the flame combustion image, and is also used to shoot the flame propagation speed demonstration module to obtain the flame propagation speed.

[0033] Further technical solutions are:

[0034] The experimental evaluation and optimization guidance module includes an image recognition module, a data acquisition module, a sample library construction module, an evaluation module and a visualization module;

[0035] The image recognition module recognizes the flame combustion image and outputs experimental result evaluation information;

[0036] The data acquisition module collects experimental data information, including the signals of each measuring point and valve during the experiment, fuel information, combustion equipment specification information, the flame combustion image and experimental result evaluation information;

[0037] The combustion equipment specification information includes the diameter of the transparent combustion tube, the type and combustion cross-sectional area of ​​the turbulent burner, and the specifications of the flame burner;

[0038] The sample library construction module organizes the experimental data information into a sample library, and traverses the sample library through a traversal algorithm, and according to the set screening variables and the evaluation tags, screens out the optimal experimental variable combinations corresponding to different screening variable values ​​to construct an optimal result library;

[0039] The evaluation module is used to receive the experimental scheme data to be evaluated, search the optimal result library for the sample closest to the experimental variable data to be evaluated, determine whether the experimental variable combination to be evaluated is the optimal combination, and evaluate the experimental scheme to be evaluated;

[0040] The visualization module is used for editing, querying and displaying.

[0041] The turbulent flow burner is of louver type, orifice plate type or swirl type structure;

[0042] The turbulent flow burner with the swirl structure is provided with a plurality of swirl blades therein. The turbulent flow burner with the swirl structure matched with transparent combustion tubes of different diameters has different numbers and / or shapes of the plurality of swirl blades therein.

[0043] The two ends of the turbulent burner are respectively provided with a first sleeve portion and a second sleeve portion, the first sleeve portion is used to cooperate with the mixed gas pipeline gas connection, and the second sleeve portion is used to cooperate with the transparent combustion tube.

[0044] The transparent combustion tube is provided with a spoiler adapted to the tube diameter thereof, for guiding the gas to flow along the transparent combustion tube in a spiral manner.

[0045] The beneficial effects of the present invention are as follows:

[0046] The method of the present invention enables evaluation and optimization guidance of gas combustion characteristic experiments under various environmental conditions and manual operation schemes. It is suitable for gas combustion characteristic measurement research and also for combustion teaching guidance, overcoming the shortcomings of existing teaching experiments.

[0047] The device of the present invention generates a gas mixture with a preset composition and content through simple flow control and data display. Different combustion states can be achieved by varying the cross-sectional dimensions of the pipeline, and the flame propagation speed in the transparent combustion tube can also be observed. The overall experiment is safe and controllable, with high operability in terms of gas composition, temperature, pressure, flow rate, and combustion conditions. The device also features data collection and analysis capabilities, enabling rational evaluation of combustion results, guiding operators to optimize the combustion process, and improving experimental success rates.

[0048] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Schematic diagram of the process of the embodiment of the present invention.

[0050] Figure 2 Schematic diagram of the structure of the device according to the embodiment of the present invention.

[0051] Figure 3 This is a schematic structural diagram of the turbulent burner used in the device of an embodiment of the present invention.

[0052] Figure 4 This is a schematic structural diagram of the transparent combustion tube and spoiler used in the device according to the embodiment of the present invention.

[0053] In the figure: 1. Combustible gas storage tank; 2. Combustion-supporting gas storage tank; 3. Gas pressure reducing valve; 4. Combustion-supporting gas pressure reducing valve; 5. Gas flow meter; 6. Combustion-supporting gas flow meter; 7. Gas pressure measuring point; 8. Combustion-supporting gas pressure measuring point; 9. Mixed gas pressure measuring point; 10. First flow control valve; 11. Flame burner; 12. High-definition camera; 13. Second flow control valve; 14. Turbulent burner; 141. Swirl blade; 142. First socket; 143. Second socket; 15. Transparent combustion tube; 16. Turbulent plate; 17. Ignition device; 18. Display screen; 19. Computer. DETAILED DESCRIPTION

[0054] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0055] Example 1

[0056] See also Figure 1 The optimization evaluation method for the gas combustion characteristics measurement experiment of this embodiment includes the following steps:

[0057] S1. Establish a sample library, including:

[0058] Conduct gas combustion characteristic measurement experiments using the control variable method, obtain corresponding experimental results, and add evaluation labels to the experimental results; use ER diagrams to describe the relationship between experimental results and experimental variables;

[0059] Experimental variables include fuel type, fuel flow, fuel pressure, combustion-supporting gas flow, combustion-supporting gas pressure, mixed gas temperature, and combustion equipment specifications. Experimental results are represented by flame state information displayed by flame combustion images. Evaluation labels are flame quality evaluations derived from analyzing flame combustion images.

[0060] Also includes:

[0061] Define the table structure of the sample library, including field names, data types, and constraints. Field names include number, person name, time, experimental variables, experimental results, and evaluation labels.

[0062] Choose storage structure and indexing strategy;

[0063] Use SQL statements to create tables and enter initial data;

[0064] Back up table data regularly.

[0065] The experimental variables and results are organized into data and stored in the sample library, which can be queried by entering commands.

[0066] The flame state information includes the outer flame height, inner flame height, flow state, and flame color.

[0067] Among them, flame quality evaluation is obtained by analyzing the flame combustion image, including:

[0068] Use image recognition models to identify flame combustion images and evaluate experimental results based on the flame state information in the images;

[0069] The image recognition model takes flame combustion images with evaluation labels as input and outputs evaluation prediction categories, which is obtained based on neural network training and learning.

[0070] As a specific embodiment, the image recognition result is displayed as the flame quality of this experiment, and the evaluation label can be a score or rating. For example, a score of 1 to 5 indicates poor combustion stability, indicating a poor experimental result; a score of 5 to 7 indicates fair combustion stability, indicating a qualified experimental result; a score of 7 to 8 indicates good combustion stability, indicating a good experimental result; and a score of 9 to 10 indicates excellent combustion stability, indicating the best experimental flame combustion effect.

[0071] As a specific implementation, the image recognition model can be obtained by transfer learning using AlexNet, VGG, models, ResNet models, DenseNet models or SENet models based on convolutional neural networks (CNN).

[0072] S2. Obtain the optimal result library, including:

[0073] Traverse the sample library, and based on the set screening variables and evaluation labels, filter out the optimal experimental variable combination corresponding to different screening variable values ​​to build the optimal result library;

[0074] Screening variables include one or a combination of experimental variables.

[0075] As a specific implementation method, the first group of screening variables is the fuel type, fuel flow rate, and fuel pressure, and the corresponding group A screening variable values ​​are: the fuel type is hydrogen, the fuel flow rate is 15m / s, and the fuel pressure is 3.5Mpa. Under the limitation of the group A screening variable values, the sample library is traversed to select the group or unit experimental variable combination with the best evaluation label of the experimental result as the optimal experimental variable combination A; then the screening variable values ​​are changed to obtain the group A screening variable values, and the optimal experimental variable combination B corresponding to the group B screening variable values ​​is screened in the same way, and so on, to obtain the optimal result sample under the first group of screening variables. Similarly, the optimal experimental variable combinations under the first, second, ... Nth groups of screening variables are screened to form the optimal result library.

[0076] S3. Acquire experimental variable data of the gas combustion characteristics measurement experimental scheme to be evaluated, search for a sample closest to the experimental variable data to be evaluated in the optimal result library, determine whether the experimental variable combination to be evaluated is the optimal combination, and evaluate the experimental scheme to be evaluated, specifically including:

[0077] If the error between the experimental variable data to be evaluated and the experimental variable values ​​in the closest sample does not exceed the set value, the experimental variable combination of the experimental variable data to be evaluated is considered to be the best ratio, and the qualified evaluation result is fed back;

[0078] If the error between the experimental variable data to be evaluated and one or more experimental variable values ​​in the closest sample exceeds the set value, an optimization plan for the experimental plan to be evaluated is given based on the comparison error.

[0079] The set value is 5%, that is, if the error between the experimental variable data to be evaluated and the experimental variable values ​​in the closest sample does not exceed 5%, it is considered that the experimental variable data to be evaluated is close to the optimal ratio, and a correct ratio signal is fed back.

[0080] Among them, if the error between the experimental variable data to be evaluated and one or more experimental variable values ​​in the closest sample exceeds the set value, the experimental variables in the experimental scheme to be evaluated are adjusted according to the optimal combination based on the comparison error, so as to obtain the optimized scheme.

[0081] S4. If it is impossible to search for the sample closest to the experimental variable data to be evaluated in the optimal result library, conduct a gas combustion characteristic measurement experiment for the scheme to be evaluated, and obtain the corresponding flame combustion image and flame quality evaluation, and add an evaluation label to the experimental result of the experimental scheme to be evaluated to form a new sample, and add the new sample to the sample library.

[0082] The sample library data of this embodiment can be continuously expanded through practical applications, for example, continuously collected and accumulated in teaching experiments or scientific research experiments.

[0083] This example method allows for evaluation of experimental plans before the experiment and, based on the comparison results, guidance on how to adjust the experimental plan. This method is suitable for combustion experiment teaching and for analyzing gas combustion characteristics in small and medium-sized enterprises.

[0084] Example 2

[0085] See also Figure 2 This embodiment provides a gas combustion characteristics measurement experimental device for the method described in Example 1, the device comprising a gas mixing module, a combustion stability demonstration module, a flame propagation speed demonstration module, an image capture module, and an experimental evaluation and optimization guidance module;

[0086] The gas mixing module includes a combustible gas storage tank 1 and a combustion-supporting gas storage tank 2. The two storage tanks are respectively connected to the first end of the mixed gas pipeline through a branch line, and the second end of the mixed gas pipeline is respectively connected to the combustion stability demonstration module and the flame propagation speed demonstration module;

[0087] The branch line connected to the combustible gas storage tank 1 is provided with a gas pressure reducing valve 3, a gas flow meter 5, and a gas pressure measuring point 7 in sequence; the branch line connected to the combustion-supporting gas storage tank 2 is provided with a combustion-supporting gas pressure reducing valve 4, a combustion-supporting gas flow meter 6, and a combustion-supporting gas pressure measuring point 8 in sequence; the mixed gas pipeline is provided with a mixed gas pressure measuring point 9;

[0088] The combustion stability demonstration module includes a plurality of flame burners 11 with different cross-sectional sizes, the inlet of each flame burner 11 is connected to the second end of the mixed gas pipeline, and a first flow control valve 10 is provided in the connecting pipeline;

[0089] The flame propagation speed demonstration module includes multiple transparent combustion tubes 15 of different diameters. The inlet end of each transparent combustion tube 15 is provided with a turbulent flow burner 14 corresponding to the tube diameter. The inlet of each turbulent flow burner 14 is respectively connected to the second end of the mixed gas pipeline, and a second flow control valve 13 is provided on the connecting pipeline. The end of each transparent combustion tube 15 is provided with an ignition device 17.

[0090] The image shooting module includes a high-definition camera 12, which is used to shoot the flame burner 11 to obtain a flame combustion image, and is also used to shoot the flame propagation speed demonstration module to obtain the flame propagation speed.

[0091] The experimental evaluation and optimization guidance module includes an image recognition module, a data acquisition module, a sample library construction module, an evaluation module and a visualization module;

[0092] The image recognition module recognizes the flame combustion image and outputs experimental result evaluation information;

[0093] The data acquisition module collects experimental data information, including the signals of each measuring point and valve during the experiment, fuel information, combustion equipment specification information, flame combustion images and experimental result evaluation information;

[0094] The combustion equipment specification information includes the diameter of the transparent combustion tube 15, the type and combustion cross-sectional area of ​​the turbulent burner 14, and the specifications of the flame burner 11;

[0095] The sample library construction module organizes the experimental data information into a sample library, and traverses the sample library through a traversal algorithm. According to the set screening variables and the evaluation labels, it screens out the optimal experimental variable combinations corresponding to different screening variable values ​​to construct the optimal result library;

[0096] The evaluation module is used to receive the experimental scheme data to be evaluated, search the optimal result library for the sample closest to the experimental variable data to be evaluated, determine whether the experimental variable combination to be evaluated is the optimal combination, and evaluate the experimental scheme to be evaluated;

[0097] The visualization module is used for editing, querying and displaying.

[0098] The process of conducting a gas combustion characteristic measurement experiment using the device of this embodiment is as follows:

[0099] Under the set experimental variable conditions, after the fuel gas and combustion-supporting gas are fully mixed in the mixed gas pipeline, a portion enters the combustion stability demonstration module, which features three parallel-connected flame burners 11: large, medium, and small. The first flow control valve 10 in one of the pipelines is opened and adjusted, igniting the flame burner 11. A high-definition camera 12 in high-speed video mode captures the flame in the burner 11. Another portion enters the flame propagation speed demonstration module, which features three parallel-connected transparent combustion tubes 15: large, medium, and small. The second flow control valve 13 in one of the pipelines is opened and adjusted to control the flow of the mixed gas in the transparent combustion tube 15. After the ignition device 17 is activated, the high-definition camera 12 in high-speed video mode captures the flame propagation speed in the transparent combustion tube 15. Information such as the measurement point and flow control valve signals, the combustion tube diameter, and the flame's combustion characteristics is uploaded to the sample library and can be queried via commands.

[0100] The turbulent burner 14 is of a shutter type, a perforated plate type or a swirl type structure.

[0101] See also Figure 3 The turbulent burner 14 of the swirl structure is provided with a plurality of swirl blades 141. In this embodiment, three different sizes of turbulent burners 14 are provided, namely large, medium and small. Figure 3As shown in (a), (b) and (c), the turbulent flow burners 14 of different specifications are used to cooperate with transparent combustion tubes 15 of different diameters, and the number and / or shape of the swirl blades 141 therein are different.

[0102] Specifically, a first sleeve portion 142 and a second sleeve portion 143 are respectively provided at both ends of the turbulent burner 14. The first sleeve portion 142 is used to cooperate with the mixed gas pipeline gas, and the second sleeve portion 143 is used to cooperate with the transparent combustion tube 15.

[0103] See also Figure 4 Transparent combustion tube 15 is equipped with spoilers 16 adapted to its diameter, guiding the gas to flow in a spiral pattern along the tube. Turbulator burners 14 of varying sizes are designed to accommodate the cross-section of transparent combustion tube 15. During the experimental process, different swirl combustion results were achieved by selecting different turbulator burners 14 for ignition testing.

[0104] The hardware part of the experimental evaluation and optimization guidance module includes a computer 19 and a display screen 18 , and each measuring point and valve signal, experimental scheme evaluation results, etc. can be displayed on the display screen 18 .

[0105] The first flow control valve 10 may be a ball valve; the second flow control valve 13 may be a needle valve.

[0106] Those skilled in the art will understand that the foregoing descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will be able to modify the technical solutions described in the foregoing embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An optimization evaluation method for gas combustion characteristics measurement experiment, characterized in that: The following steps are involved: S1. Establish a sample library, including: Conduct gas combustion characteristic measurement experiments using the control variable method to obtain corresponding experimental results, and add evaluation labels to the experimental results; use ER diagrams to describe the relationship between experimental results and experimental variables; The experimental variables include fuel type, fuel flow, fuel pressure, combustion-supporting gas flow, combustion-supporting gas pressure, mixed gas temperature, and combustion equipment specifications; the experimental results are characterized by flame state information displayed by the flame combustion image; and the evaluation label is a flame quality evaluation obtained by analyzing the flame combustion image; S2. Obtain the optimal result library, including: Traversing the sample library, and based on the set screening variables and the evaluation tags, screening out the optimal experimental variable combinations corresponding to different screening variable values, and constructing the optimal result library; The screening variables include one or a combination of several of the experimental variables; S3. Acquire experimental variable data of the gas combustion characteristics measurement experimental scheme to be evaluated, search the optimal result library for a sample closest to the experimental variable data to be evaluated, determine whether the experimental variable combination to be evaluated is the optimal combination, and evaluate the experimental scheme to be evaluated; S4. If a sample closest to the variable data of the experiment to be evaluated cannot be found in the optimal result library, the gas combustion characteristic measurement experiment is performed for the scheme to be evaluated, and corresponding flame combustion images and flame quality evaluations are obtained. The evaluation label is added to the experimental results of the scheme to be evaluated to form a new sample, and the new sample is added to the sample library; Searching the optimal result library for a sample closest to the experimental variable data to be evaluated, determining whether the experimental variable combination to be evaluated is the optimal combination, and evaluating the experimental plan to be evaluated, including: If the error between the experimental variable data to be evaluated and the experimental variable values ​​in the closest sample does not exceed the set value, the experimental variable combination of the experimental variable data to be evaluated is considered to be the best ratio, and a qualified evaluation result is fed back; If the error between the experimental variable data to be evaluated and one or more experimental variable values ​​in the closest sample exceeds a set value, an optimization scheme for the experimental scheme to be evaluated is given based on the comparison error; The flame quality evaluation is obtained by analyzing the flame combustion image, including: Using an image recognition model to identify the flame combustion image, and evaluating the experimental results based on the flame state information in the image; The image recognition model takes flame combustion images with evaluation labels added as input and outputs evaluation prediction categories, and is obtained based on neural network training and learning; The flame state information includes the outer flame height, inner flame height, flow state, and flame color of the flame; The establishing of the sample library further includes: Define the table structure of the sample library, including field names, data types, and constraints. The field names include number, person name, time, experimental variables, experimental results, and evaluation labels. Choose storage structure and indexing strategy; Use SQL statements to create tables and enter initial data; Back up table data regularly.

2. A gas combustion characteristics measurement experimental device for implementing the method according to claim 1, characterized in that: The device includes a gas mixing module, a combustion stability demonstration module, a flame propagation speed demonstration module, an image shooting module and an experimental evaluation and optimization guidance module; The gas mixing module comprises a combustible gas storage tank (1) and a combustion-supporting gas storage tank (2), the two storage tanks being connected to a first end of a mixed gas pipeline via a branch line, and the second end of the mixed gas pipeline being connected to a combustion stability demonstration module and a flame propagation speed demonstration module respectively; The branch line connected to the combustible gas storage tank (1) is provided with a gas pressure reducing valve (3), a gas flow meter (5), and a gas pressure measuring point (7) in sequence; the branch line connected to the combustion-supporting gas storage tank (2) is provided with a combustion-supporting gas pressure reducing valve (4), a combustion-supporting gas flow meter (6), and a combustion-supporting gas pressure measuring point (8) in sequence; and the mixed gas pipeline is provided with a mixed gas pressure measuring point (9); The combustion stability demonstration module comprises a plurality of flame burners (11) with different cross-sectional sizes, the inlet of each flame burner (11) being connected to the second end of the mixed gas pipeline, and a first flow control valve (10) being provided on the connecting pipeline; The flame propagation speed demonstration module comprises a plurality of transparent combustion tubes (15) of different diameters, wherein the inlet end of each transparent combustion tube (15) is provided with a turbulent flow burner (14) corresponding to the tube diameter, the inlet of each turbulent flow burner (14) is respectively connected to the second end of the mixed gas pipeline, and a second flow control valve (13) is provided on the connecting pipeline; and an ignition device (17) is provided at the end of each transparent combustion tube (15); The image shooting module comprises a high-definition camera (12), which is used to shoot the flame burner (11) to obtain the flame combustion image, and is also used to shoot the flame propagation speed demonstration module to obtain the flame propagation speed.

3. The device according to claim 2, characterized in that The experimental evaluation and optimization guidance module includes an image recognition module, a data acquisition module, a sample library construction module, an evaluation module and a visualization module; The image recognition module recognizes the flame combustion image and outputs experimental result evaluation information; The data acquisition module collects experimental data information, including the signals of each measuring point and valve during the experiment, fuel information, combustion equipment specification information, the flame combustion image and experimental result evaluation information; Specification information of the combustion equipment, including the diameter of the transparent combustion tube (15), the type and combustion cross-sectional area of ​​the turbulent burner (14), and the specifications of the flame burner (11); The sample library construction module organizes the experimental data information into a sample library, and traverses the sample library through a traversal algorithm, and according to the set screening variables and the evaluation tags, screens out the optimal experimental variable combinations corresponding to different screening variable values ​​to construct an optimal result library; The evaluation module is used to receive the experimental scheme data to be evaluated, search the optimal result library for the sample closest to the experimental variable data to be evaluated, determine whether the experimental variable combination to be evaluated is the optimal combination, and evaluate the experimental scheme to be evaluated; The visualization module is used for editing, querying and displaying.

4. The device according to claim 2, characterized in that The turbulent flow burner (14) is a shutter type, a perforated plate type or a swirl type structure; The turbulent flow burner (14) of the swirl-type structure is provided with a plurality of swirl blades (141) therein. The turbulent flow burner (14) of the swirl-type structure matched with transparent combustion tubes (15) of different diameters has different numbers and / or shapes of the plurality of swirl blades (141) therein.

5. The device according to claim 4, characterized in that The turbulent burner (14) is provided with a first sleeve portion (142) and a second sleeve portion (143) at both ends, respectively. The first sleeve portion (142) is used for cooperating with the mixed gas pipeline gas, and the second sleeve portion (143) is used for cooperating with the transparent combustion tube (15).

6. The device according to claim 3, characterized in that The transparent combustion tube (15) is provided with a spoiler (16) adapted to the tube diameter thereof, and is used to guide the gas to flow in a spiral manner along the transparent combustion tube (15).

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