Closed litter combustion dynamic parameter testing device

Abstract

The invention relates to the technical field of material combustion experiment equipment, in particular to a closed litter combustion dynamic parameter testing device. According to the technical scheme, the device comprises a closed combustion cabin and further comprises a pressure detection base arranged on the inner bottom wall of the closed combustion cabin, and a bottom plate is arranged on the upper surface of the pressure detection base. Through the design of the pressure detection base, the bottom plate, the rotating mechanism, the adjustable fan, the monitoring mechanism and other structures, the airtight experiment device can flexibly adjust the wind direction and the wind speed, the change of wind in the natural environment is accurately simulated, and a litter combustion scene is more practical. Meanwhile, the inclination angle of the combustion supporting plate can be accurately controlled, and different gradient simulation requirements are met. In addition, the device has the functions of monitoring and adjusting parameters such as temperature and radiation in the combustion process in real time. Due to the series of characteristics, the defects of a traditional device are effectively overcome, the comprehensiveness and accuracy of experimental data collection are greatly improved, and the reliability of experimental data is powerfully guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of material combustion experimental equipment, and particularly to a closed test device for dynamic parameters of litter combustion. Background Art

[0002] Forest fires are one of the natural disasters, and their occurrence and development are affected by various factors. Among them, the terrain slope is a key factor. With the increase of the slope, the combustibility of litter significantly increases. This change is related to heat transfer and oxygen supply after the slope change. Under high-slope conditions, heat is more likely to spread upward along the slope surface, promoting the spread of combustion. At the same time, the supply of oxygen may also increase due to changes in wind direction and wind speed, further enhancing the combustion intensity. In addition, the increase in slope significantly affects the spread characteristics of the fire. Specifically, the larger the slope, the easier the fire is to spread upward, the wider the high-temperature area, and the significantly enhanced spread intensity. Under low-slope conditions, the spread of the fire is restricted and the combustion efficiency is low. This is because the direction of heat transfer under low-slope conditions is relatively consistent with the direction of gravity, which is not conducive to the rapid spread of the fire. However, when the slope increases, the fire can completely spread to the rear of the unburned area, and as the slope further increases, the combustion end time gradually shortens. This shows that the increase in slope not only promotes the rapid spread of the fire but also improves the combustion efficiency and intensity. In addition, with the increase of the slope, the distribution range of CO2 expands and the high-concentration areas increase. With the increase of the slope, the high-concentration areas of CO2 significantly increase and accumulate near the foot of the slope, and the lateral spread area increases. Under rugged terrain conditions, the fire spread path is affected by the terrain, and the gap may become a channel for fire spread, and the forest fire quickly spreads to the surrounding area through the gap. CO2 is extremely likely to accumulate at the terrain gap and terrain depression. This phenomenon indicates that the slope and terrain not only affect the spread of the fire but also have an important impact on the distribution of combustion products.

[0003] In addition to being affected by the slope, the combustion characteristics of litter are also affected by wind speed, temperature, etc. Therefore, the experiment on the dynamic parameters of litter combustion is of great significance for studying the spread characteristics of forest fires, formulating fire prevention strategies, and evaluating fire risks. However, there are some limitations in the existing experimental devices during the test process. For example, the wind direction and wind speed cannot be flexibly adjusted, the tilt angle of the combustion tray cannot be precisely controlled, and there is a lack of real-time monitoring and adjustment functions for parameters such as temperature and radiation during the combustion process. These problems limit the accuracy and reliability of experimental data and also affect the in-depth study of the combustion characteristics of litter. Summary of the Invention

[0004] The object of the present invention is to address the limitations of existing litter combustion experimental devices, which affect data accuracy and in-depth research. A closed litter combustion dynamic parameter testing device is proposed. Through this device, small-scale combustion experiments and numerical simulations are carried out to study the combustion behavior of litter under different slope conditions, reveal the influence law of slope on the combustion behavior of litter, and provide a theoretical basis for formulating scientific and reasonable forest fire prevention strategies.

[0005] The technical solution of the present invention: A closed litter combustion dynamic parameter testing device includes a closed combustion chamber, and further includes: a pressure detection base provided on the inner bottom wall of the closed combustion chamber, a bottom plate provided on the upper surface of the pressure detection base, a combustion platform rotatably connected to the bottom plate, and a rotation mechanism on the bottom plate for automatically adjusting the tilt angle of the combustion platform; an adjustable blower fixedly connected to the inner wall of the closed combustion chamber and aligned with the combustion platform; a monitoring mechanism, including a first camera, a second camera, a thermal radiation meter, a first temperature sensor, and a temperature controller electrically connected and installed in the closed combustion chamber; and a fire extinguishing mechanism for automatically triggering after monitoring the smoke and temperature in the closed combustion chamber.

[0006] Optionally, the rotation mechanism includes a pair of rotating grooves opened on the combustion platform, a pair of support blocks fixedly connected to the upper surface of one end of the bottom plate and inserted into the rotating grooves, a double-shaft motor provided inside one of the support blocks, and both output shafts of the double-shaft motor are movably penetrated through the support block and fixedly connected to a connecting block, and the end of the connecting block away from the double-shaft motor is fixedly connected to the inner wall of the rotating groove.

[0007] Optionally, the rotation mechanism includes a rotating rod rotatably connected to the lower surface of the combustion platform, a buckle fixedly connected to the end of the rotating rod away from the combustion platform, and a plurality of linearly arranged card slots opened on the upper surface of the bottom plate for the buckle to be inserted into.

[0008] Optionally, the fire extinguishing mechanism includes a smoke sensor, a second temperature sensor, and a spray device electrically connected inside the closed combustion chamber.

[0009] Optionally, a smoke exhaust pipe is fixedly connected to the top of the closed combustion chamber, and a gas analyzer for monitoring the smoke discharged from the closed combustion chamber is provided on the outer wall of the smoke exhaust pipe.

[0010] Optionally, a smoke purifier is fixedly connected to the end of the smoke exhaust pipe away from the closed combustion chamber.

[0011] Optionally, support rods are provided at the bottoms of the first camera and the second camera, and the ends of the support rods away from the first camera and the second camera are fixedly connected to the inner bottom wall of the closed combustion chamber.

[0012] Optionally, a bracket is fixedly connected inside the sealed combustion chamber, and one end of the bracket away from the inner wall of the sealed combustion chamber is fixedly connected to a temperature controller.

[0013] Optionally, an observation window for observing the inside of the sealed combustion chamber in real time is provided on the sealed combustion chamber, and a controller is further fixedly connected to the outer wall of the sealed combustion chamber. An emergency stop button and a power-off protection device are provided on the controller.

[0014] Optionally, a hatch for entering and exiting the sealed combustion chamber is connected to the sealed combustion chamber by a hinge, and the hatch is made of a high-temperature alloy material.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] Through the design of structures such as a pressure detection base, a bottom plate, a rotating mechanism, an adjustable blower, and a monitoring mechanism, the sealed experimental device of the present invention can flexibly adjust the wind direction and wind speed, accurately simulate the changes in wind in the natural environment, and make the litter combustion scenario more realistic. At the same time, the inclination angle of the combustion tray can be precisely controlled to meet the simulation requirements of different slopes. Moreover, the device has the function of real-time monitoring and adjustment of parameters such as temperature and radiation during the combustion process. These characteristics effectively overcome the deficiencies of traditional devices, greatly improve the comprehensiveness and accuracy of experimental data collection, and effectively guarantee the reliability of experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structural schematic diagram of a sealed litter combustion dynamic parameter testing device of the present invention is given;

[0018] Figure 2 For Figure 1 the first state cross-sectional view;

[0019] Figure 3 For Figure 1 the second state cross-sectional view;

[0020] Figure 4 For Figure 1 the left view cross-sectional view;

[0021] Figure 5 For Figure 2 the partial structural schematic diagram;

[0022] Figure 6 For Figure 3 the partial cross-sectional view;

[0023] Figure 7 For Figure 6 the enlarged schematic diagram at A in

[0024] Reference numerals: 1, sealed combustion chamber; 2, pressure detection base; 3, bottom plate; 31, card slot; 32, support block; 33, biaxial motor; 34, connecting block; 341, rotating rod; 342, buckle; 4, combustion platform; 41, rotating groove; 5, first camera; 6, second camera; 561, support rod; 7, thermal radiation meter; 8, first temperature sensor; 9, temperature controller; 10, smoke exhaust pipe; 11, gas analyzer; 12, smoke sensor; 13, second temperature sensor; 14, spraying device; 15, adjustable blower; 16, bracket; 17, observation window; 18, controller; 19, hatch door; 20, smoke purifier. Detailed implementation manners

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0026] The components of the embodiments of the present invention usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] It should be noted that the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. 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 any one or more embodiments or examples in a suitable manner.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment

[0032] As Figures 1 to 7 As shown, a closed litter combustion dynamic parameter testing device proposed by the present invention includes a closed combustion chamber 1. A hatch 19 for entering and exiting the closed combustion chamber 1 is connected to the closed combustion chamber 1 by a hinge. The hatch 19 is made of a superalloy material, which is convenient for experimental personnel to place and take out experimental materials, and can ensure the structural stability and sealing performance of the hatch 19 in a high-temperature combustion environment, preventing the leakage of experimental gases and other situations. The hatch 19 is made of a superalloy material. A bracket 16 is fixedly connected to the inside of the closed combustion chamber 1. The bracket 16 is fixedly connected to the inside of the closed combustion chamber 1. One end of the bracket 16 away from the inner wall of the closed combustion chamber 1 is fixedly connected to a temperature controller 9, which is also used to stabilize the temperature controller 9. One end of the bracket 16 away from the inner wall of the closed combustion chamber 1 is fixedly connected to the temperature controller 9. A pressure detection base 2 is provided on the inner bottom wall of the closed combustion chamber 1, and a bottom plate 3 is provided on the upper surface of the pressure detection base 2.

[0033] Among them, as Figures 2 to 4As shown in the figure, an adjustable blower 15 is provided on the inner wall of the closed combustion chamber 1 and is aligned with the combustion platform 4. The adjustable blower 15 uses a high-precision variable-frequency blower, with a wind speed adjustment range of 0.1 m / s to 20 m / s and an adjustment accuracy of ±0.01 m / s. It can accurately simulate the combustion process under conditions from gentle breeze to strong wind, meeting the experimental research requirements for the influence of winds of different intensities on combustion. A fairing and a flow equalizing plate are also installed at the outlet of the adjustable blower 15. Combined with the optimized design through computational fluid dynamics simulation, it ensures that the wind blown by the blower has good uniformity and stability when reaching the combustion pallet area, with the wind speed non-uniformity controlled within ±2%, reducing experimental errors caused by uneven wind fields. A monitoring mechanism is provided inside the closed combustion chamber 1. The monitoring mechanism includes a first camera 5, a second camera 6, a thermal radiation meter 7, a first temperature sensor 8, and a temperature controller 9 that are electrically connected. Support rods 561 are provided at the bottoms of the first camera 5 and the second camera 6. One end of the support rod 561 away from the first camera 5 and the second camera 6 is fixedly connected to the inner bottom wall of the closed combustion chamber 1. Support rods 561 are provided at the bottoms of the first camera 5 and the second camera 6. One end of the support rod 561 away from the first camera 5 and the second camera 6 is fixedly connected to the inner bottom wall of the closed combustion chamber 1, which plays a role in stabilizing the first camera 5 and the second camera 6 and ensuring the stability of the monitoring data.

[0034] Secondly, as Figures 5 to 7 shown in the figure, a combustion platform 4 is rotatably connected to the bottom plate 3. The combustion platform 4 is made of high-temperature resistant ceramic fiber material and is coated with an anti-oxidation coating on the surface. It can work stably for a long time in a high-temperature environment, with a maximum tolerance temperature of not less than 1200 °C, effectively preventing damage to the pallet caused by the high temperature generated during combustion. The combustion platform 4 is internally provided with heating wires and a temperature controller, which can set the initial temperature of the pallet according to experimental requirements. The heating rate adjustable range is 1 °C / min to 10 °C / min, ensuring that the combustion experiment starts under the preset temperature conditions and improving the comparability and repeatability of the experimental results. A rotating mechanism for automatically adjusting the tilt angle of the combustion platform 4 is provided on the bottom plate 3. The rotating mechanism includes a pair of rotating grooves 41 opened on the combustion platform 4. A pair of support blocks 32 that are snapped into the rotating grooves 41 are fixedly connected to the upper surface of one end of the bottom plate 3. A double-shaft motor 33 is provided inside one of the support blocks 32. The output shafts at both ends of the double-shaft motor 33 both pass through the support block 32 movably and are fixedly connected to connection blocks 34. One end of the connection block 34 away from the double-shaft motor 33 is fixedly connected to the inner wall of the rotating groove 41.

[0035] In addition, as Figure 2 and Figure 5As shown in the figure, the rotating mechanism includes a rotating rod 341 rotatably connected to the lower surface of the combustion platform 4. One end of the rotating rod 341 away from the combustion platform 4 is fixedly connected with a buckle 342. A plurality of card slots 31 arranged linearly and for the buckle 342 to be inserted into are formed on the upper surface of the bottom plate 3. Existing research has found through the litter of Magnolia grandiflora, Cinnamomum camphora, and Photinia serratifolia that their combustion characteristics are related to moisture content and activation energy. The moisture content of Photinia serratifolia is 32.74%, with a high activation energy and difficult to burn; the moisture content of Cinnamomum camphora is 21.69%, with a low activation energy and easy to burn. Physically and chemically, water absorbs heat and reduces the speed during the initial stage of combustion. A high activation energy makes it difficult to start combustion, which can provide a reference for the selection of tree species in fire-prone areas. Selecting tree species with high moisture content and activation energy can reduce risks. As the slope increases, the combustibility of litter becomes stronger. At a low slope, the combustibility of Cinnamomum camphora is the strongest and that of Photinia serratifolia is the weakest; at a high slope, the combustibility of Magnolia grandiflora increases, and the longitudinal spread exceeds that of Cinnamomum camphora, perhaps due to changes in heat, oxygen, and physical structure. The maximum temperature of the three kinds of litter does not exceed 388°C, being in the stage of brown cellulose combustion. The content of brown cellulose can be studied to analyze the differences, which helps in forest fire prevention and control.

[0036] It should be noted that as Figure 4 shown in the figure, an extinguishing mechanism that is automatically triggered after monitoring smoke and temperature is provided inside the closed combustion chamber 1. The extinguishing mechanism includes a smoke sensor 12, a second temperature sensor 13, and a spraying device 14 that are electrically connected inside the closed combustion chamber 1. In addition, the slope has a great influence on the spread of the fire. As the slope increases, it is easier for the fire to spread upward, the high-temperature area expands, and the spread intensity increases; at a low slope, gravity restricts the heat transfer, and the fire spread and combustion efficiency are not good. When the slope reaches 25° and 35°, the fire can reach the rear of the model, and the greater the slope, the faster the combustion ends, highlighting the improvement of combustion efficiency and intensity. This study quantified the slope response threshold of Cinnamomum camphora litter for the first time and found that its fire spread ability is the strongest at 0° and 15°. This achievement reveals the quantitative relationship between the slope and the fire spread, provides a theoretical basis for forest fire warning and fighting, and is conducive to accurately predicting the fire situation according to the terrain slope. In addition, the increase in slope causes the expansion of the CO2 distribution range and the increase in high-concentration areas. At 35°, a high-concentration area of CO2 accumulates near the foot of the slope and the lateral spread area increases. In rugged terrain, the fire spread path is affected by the terrain, and the gap is often the propagation channel. CO2 is easily accumulated in terrain gaps and depressions. It can be seen that the slope and terrain have a significant impact on the fire spread and CO2 distribution. Since CO2 has a profound impact on the environment, clarifying the role of the slope and terrain in its distribution helps to evaluate the impact of the fire on the environment, so as to formulate environmental protection measures such as strengthening monitoring and protection in areas where CO2 is easily accumulated, and reducing the negative impact of the fire on the ecological and atmospheric environment.

[0037] Furthermore, as Figures 1 to 4As shown in the figure, a smoke exhaust pipe 10 is fixedly connected to the top of the sealed combustion chamber 1. A gas analyzer 11 for monitoring the smoke discharged from the sealed combustion chamber 1 is provided on the outer wall of the smoke exhaust pipe 10, which helps to conduct secondary monitoring of the smoke generated by combustion, obtain more comprehensive data, and improve the accuracy of monitoring. And through the smoke purifier 20, the smoke discharged from the smoke exhaust pipe 10 is purified to ensure compliance with the environmental protection concept. The smoke exhaust pipe 10 is fixedly connected to a smoke purifier 20 at one end far away from the sealed combustion chamber 1. The smoke purifier 20 is a device for filtering and purifying pollutants such as smoke, dust, odor, and harmful gases in the air, and is widely used in many fields such as industrial production, commercial activities, and daily life to ensure air quality and human health. A gas analyzer 11 for monitoring the smoke discharged from the sealed combustion chamber 1 is provided on the outer wall of the smoke exhaust pipe 10.

[0038] Furthermore, as Figure 1 shown in the figure, an observation window 17 for observing the inside of the sealed combustion chamber 1 in real time is provided on the sealed combustion chamber 1. An observation window 17 for observing the inside of the sealed combustion chamber 1 in real time is provided on the sealed combustion chamber 1, which is convenient for experimental personnel to check the internal combustion situation at any time. A controller 18 is fixedly connected to the outer wall of the sealed combustion chamber 1. An emergency stop button and a power-off protection device are provided on the controller 18. When an unexpected situation occurs during the experiment, the experimental personnel can quickly press the emergency stop button to terminate the experiment, and the power-off protection device can protect the data and equipment safety in the experimental device during a power outage. A controller 18 is also fixedly connected to the outer wall of the sealed combustion chamber 1. An emergency stop button and a power-off protection device are provided on the controller 18.

[0039] In this embodiment, when the experimental device needs to be used, a rotating mechanism with an automatically adjustable tilt angle is connected to the bottom plate 3. When using the rotating mechanism, only the dual-axis motor 33 needs to be started, and its output shaft drives the connecting block 34 to rotate. Since the connecting block 34 is fixed to the inner wall of the rotating groove 41, the support block 32 and the bottom plate 3 connected thereto are tilted around the axis of the connecting block 34. This design makes it possible to simulate litter combustion scenarios with different slopes. On the inner wall of the closed combustion chamber 1, an adjustable blower 15 is fixedly connected to the position of the combustion platform 4, and its function can simulate various wind directions and wind forces to ensure applicability to different combustion conditions. At the same time, a monitoring mechanism composed of a first camera 5, a second camera 6, a thermal radiation meter 7, a first temperature sensor 8, and a temperature controller 9 that are electrically connected is installed inside the closed combustion chamber 1 to comprehensively monitor various parameters during the combustion process. In addition, a fire extinguishing mechanism is equipped. When the first camera 5, the second camera 6, the thermal radiation meter 7, the first temperature sensor 8, and the temperature controller 9 in the monitoring mechanism detect that the smoke concentration in the closed combustion chamber 1 reaches the set threshold or the temperature exceeds the safe range, a signal will be transmitted to the smoke sensor 12 electrically connected thereto. After receiving the signal, the smoke sensor 12 triggers the second temperature sensor 13 and the sprinkler device 14 to perform corresponding fire extinguishing operations, such as releasing fire extinguishing media, etc., so as to quickly extinguish the flame in the closed combustion chamber 1, prevent accidents, and ensure the safety of the experiment.

[0040] The preferred embodiments of the present invention described above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A closed test device for dynamic parameters of litter combustion, comprising a closed combustion chamber (1), characterized in that, It further includes: A pressure detection base (2) provided on the inner bottom wall of the closed combustion chamber (1). The upper surface of the pressure detection base (2) is provided with a bottom plate (3). A combustion platform (4) is rotatably connected to the bottom plate (3). A rotating mechanism for automatically adjusting the tilt angle of the combustion platform (4) is provided on the bottom plate (3); An adjustable blower (15) fixedly connected to the inner wall of the closed combustion chamber (1) and aligned with the combustion platform (4); A monitoring mechanism, including a first camera (5), a second camera (6), a thermal radiation detector (7), a first temperature sensor (8) and a temperature controller (9) which are electrically connected and installed in the closed combustion chamber (1); A fire extinguishing mechanism for automatically triggering after monitoring the smoke and temperature in the closed combustion chamber (1).

2. The closed litter combustion dynamic parameter testing device according to claim 1, wherein The rotating mechanism includes a pair of rotating grooves (41) opened on the combustion platform (4). One end of the upper surface of the bottom plate (3) is fixedly connected with a pair of support blocks (32) that are inserted into the rotating grooves (41). A double-shaft motor (33) is provided inside one of the support blocks (32). The output shafts at both ends of the double-shaft motor (33) are both movably penetrated through the support block (32) and then fixedly connected with a connecting block (34). The ends of the connecting block (34) away from the double-shaft motor (33) are fixedly connected with the inner walls of the rotating grooves (41).

3. The closed litter combustion dynamic parameter testing device according to claim 1, characterized in that, The rotating mechanism includes a rotating rod (341) rotatably connected to the lower surface of the combustion platform (4). The end of the rotating rod (341) away from the combustion platform (4) is fixedly connected with a buckle (342). A plurality of slots (31) arranged linearly and for the buckle (342) to be inserted into are opened on the upper surface of the bottom plate (3).

4. The closed litter combustion dynamic parameter testing device according to claim 1, wherein The fire extinguishing mechanism includes a smoke sensor (12), a second temperature sensor (13) and a sprinkler device (14) which are electrically connected inside the closed combustion chamber (1).

5. The closed litter combustion dynamic parameter testing device according to claim 1, characterized in that, A smoke exhaust pipe (10) is fixedly connected to the top of the closed combustion chamber (1). A gas analyzer (11) for monitoring the smoke discharged from the closed combustion chamber (1) is provided on the outer wall of the smoke exhaust pipe (10).

6. The closed litter combustion dynamic parameter testing device according to claim 5, wherein, One end of the smoke exhaust pipe (10) away from the closed combustion chamber (1) is fixedly connected with a smoke purifier (20).

7. A closed litter combustion dynamic parameter testing device according to claim 1, characterized in that, Support rods (561) are provided at the bottoms of the first camera (5) and the second camera (6). The ends of the support rods (561) away from the first camera (5) and the second camera (6) are fixedly connected with the inner bottom wall of the closed combustion chamber (1).

8. A closed litter combustion dynamic parameter testing device according to claim 1, characterized in that A bracket (16) is fixedly connected inside the closed combustion chamber (1). The end of the bracket (16) away from the inner wall of the closed combustion chamber (1) is fixedly connected with the temperature controller (9).

9. A closed litter combustion dynamic parameter testing device according to claim 1, characterized in that, An observation window (17) for observing the inside of the closed combustion chamber (1) in real time is provided on the closed combustion chamber (1). An outer wall of the closed combustion chamber (1) is also fixedly connected with a controller (18). An emergency stop button and a power-off protection device are provided on the controller (18).

10. A closed litter combustion dynamic parameter testing device according to claim 1, characterized in that, A hatch door (19) for entering and exiting the closed combustion chamber (1) is hinged to the closed combustion chamber (1). The hatch door (19) is made of a high-temperature alloy material.

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