Modularized combustion chamber structure for researching fire smoke and fire characteristics of high-rise building

Abstract

The invention discloses a modular combustion chamber structure for studying fire smoke and fire characteristics of a high-rise building, which is applied to the technical field of simulation of the fire and fire characteristics of the high-rise building, and forms a layered space structure by designing a simulation combustion chamber main body consisting of a bottom plate, a surrounding plate, a partition plate and a cover plate; the structure can simulate the spatial layout of different floors of the high-rise building, and different combustion conditions and materials can be arranged on different floors, so that the development and spreading characteristics of a fire disaster on each floor of the high-rise building can be accurately researched, more accurate guidance is provided for the fireproof design and fire disaster suppression of the high-rise building, the deviation between a research result and an actual situation is reduced, and the research efficiency is improved. Different sizes and states of the vertical channels of the high-rise building, such as an elevator shaft and a pipeline shaft, are simulated through the adjusting assembly, so that the spreading characteristics of smoke and fire in the vertical channels can be researched more truly, more effective vertical fireproof separation measures can be formulated, and the prevention and control capability on the fire of the high-rise building is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-rise fire and smoke characteristics simulation, and in particular relates to a modular combustion chamber structure for studying fire and smoke characteristics of high-rise building fires. Background Art

[0002] In the field of high-rise building fire research, in-depth understanding of fire and pyrotechnic characteristics is crucial to developing effective fire prevention, fire extinguishing strategies and personnel evacuation plans. Modular combustion chambers are key facilities for studying such characteristics, and their performance directly affects the accuracy and effectiveness of the research.

[0003] At present, there are many problems that need to be solved in the existing combustion chambers used for high-rise building fire research: in terms of the combustion chamber space structure, most existing combustion chambers adopt a single, fixed spatial layout, which cannot simulate the complex layered structure of high-rise buildings. The fixed combustion chamber space layout is difficult to accurately simulate these differences, resulting in deviations between the research results and the actual situation, and unable to provide accurate guidance for high-rise building fire protection design and fire fighting;

[0004] In addition, the vertical passages of high-rise buildings, such as elevator shafts and pipe shafts, are important pathways for the spread of smoke and fire when a fire occurs. The structures and sizes of vertical passages in different buildings vary. Fixed vertical passages cannot simulate these diverse structures, which limits the research on the characteristics of smoke and fire spread in vertical passages during high-rise building fires, and is not conducive to the formulation of effective vertical fire separation measures.

[0005] Therefore, a modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires was proposed, which had a layered spatial structure, could flexibly change the size of the vertical channel and had high functional integration. Summary of the invention

[0006] The purpose of the present invention is to study the existing modular combustion chamber structure for studying the characteristics of pyrotechnics in high-rise building fires. The advantage of the present invention is that a layered spatial structure is formed by designing a simulated combustion chamber body composed of a bottom plate, a surrounding plate, a partition and a cover plate. This structure can simulate the spatial layout of different floors of a high-rise building, and different combustion conditions and materials can be set on different floors, so as to accurately study the development and spread characteristics of fires on each floor of a high-rise building, provide more precise guidance for high-rise building fire protection design and fire fighting, reduce the deviation between research results and actual conditions, and simulate different sizes and states of vertical passages in high-rise buildings such as elevator shafts and pipe shafts by adjusting components, so as to more realistically study the spread characteristics of pyrotechnics in vertical passages, which is helpful to formulate more effective vertical fire separation measures and improve the prevention and control capabilities of high-rise building fires.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires, including a combustion chamber body, the simulated combustion chamber body including a bottom plate, a plurality of enclosures are arranged on the top of the bottom plate, and a cover plate is bolted to the top of the top enclosure, a partition is bolted between the opposite sides of two adjacent enclosures, an inner vertical plate is bolted to the inside of the enclosure, ventilation components are bolted to both sides of the enclosure, and adjustment components are bolted to the top of the cover plate and the partition.

[0008] By adopting the above technical scheme, a layered spatial structure is formed by designing a simulated combustion chamber body composed of a bottom plate, a surround, a partition and a cover plate. This structure can simulate the spatial layout of different floors of a high-rise building, and different combustion conditions and materials can be set on different floors, so as to accurately study the development and spread characteristics of fires on each floor of a high-rise building, provide more accurate guidance for fire protection design and fire fighting of high-rise buildings, reduce the deviation between research results and actual conditions, and simulate different sizes and states of vertical passages in high-rise buildings such as elevator shafts and pipe shafts by adjusting components, so as to more realistically study the spread characteristics of smoke and fire in vertical passages, which is helpful to formulate more effective vertical fire separation measures and improve the prevention and control capabilities of high-rise building fires. Moreover, the size and ventilation direction of the vents can be flexibly adjusted through the ventilation components, so as to simulate fire scenes of high-rise buildings under different ventilation conditions such as window opening status, ventilation duct operation status, external wind influence, etc., and deeply explore the influence of ventilation on the characteristics of fire and smoke, so as to provide a basis for optimizing the building ventilation system and smoke exhaust design.

[0009] The present invention is further configured as follows: the adjustment component includes a fixed plate, which is bolted to the top of the cover plate and the inside of the partition plate respectively, the top of the fixed plate is rotatably connected to a movable ring, the four corners of the top of the fixed plate are rotatably connected to gears, and a plurality of adjustment blades are slidably arranged on the top of the fixed plate, a rectangular cavity is formed between the adjustment blades, and tooth grooves are arranged on one side of the adjustment blade and the movable ring close to the gear, and the tooth grooves are meshed with the teeth.

[0010] By adopting the above technical scheme, an adjustment component is set, and the movable ring is rotated, and the teeth on the movable ring will synchronously drive the gear to rotate. At the same time, the gear is meshed with the teeth on the adjusting blade, so that multiple adjusting blades can slide on the fixed plate at the same time, thereby changing the size of the rectangular cavity between the adjusting blades, thereby simulating the size change of the vertical channel, and then simulating the different sizes of the vertical channels of high-rise buildings, thereby improving the accuracy and flexibility of the study of the fire characteristics of the vertical channels, and the partition or cover can be closed or opened to simulate the chimney effect of the flame in the high-rise building and the fire plume shape, respectively, and has the effect of simulating multiple high-rise building fires.

[0011] The present invention is further configured as follows: limit blocks are arranged at the four corners of the top of the fixing plate, and the adjusting blade is slidably sleeved on the surface of the limit block, and a limit hole used in conjunction with the limit block is opened inside the adjusting blade.

[0012] By adopting the above technical solution, the stability and accuracy of the movement of the adjusting blade are ensured by setting the limit block and the limit hole, preventing the adjusting blade from shifting or shaking during the movement, ensuring that the shape and size of the rectangular cavity can be accurately adjusted, and improving the reliability of the adjusting component.

[0013] The present invention is further configured as follows: a limiting ring is bolted to the top of the fixed plate, and the movable ring is inside the limiting ring, a notch is provided on the right side of the limiting ring, a movable plate is provided on the right side of the movable ring, and the movable plate is inside the notch, and an electric cylinder structure is rotatably connected to the left side of the movable plate, and the electric cylinder structure is rotatably connected to the cover plate and the partition plate respectively.

[0014] By adopting the above technical solution, the limit ring can limit the movable ring so that it can only rotate inside the limit ring. Through the setting of the electric cylinder structure and the movable plate, the movable plate can be driven to rotate synchronously with the movable ring.

[0015] The present invention is further configured as follows: vertical channels are provided inside the cover plate, the partition plate and the fixing plate, and two adjacent vertical channels are connected to the rectangular cavity.

[0016] By adopting the above technical scheme, the two adjacent vertical channels and the rectangular cavity are connected by opening a vertical channel, forming a complete vertical channel simulation system, which is convenient for studying the spread path and characteristics of smoke and fire in the vertical channel, and improves the effectiveness of the combustion chamber in simulating vertical channel fires in high-rise buildings.

[0017] The present invention is further configured as follows: the ventilation assembly includes an air duct, which is bolted to a side of the air duct close to the enclosure, a fixing block is bolted to the inside of the air duct away from the enclosure, and an adjustment plate is slidably arranged inside the fixing block, an adjusting bolt is rotatably connected to the rear side of the adjusting plate, and the rear side of the adjusting bolt extends to the outside of the air duct and is threadedly sleeved with a nut, positioning plates are bolted to both sides of the nut, and the front side of the positioning plate is bolted to the air duct, an air guide is arranged inside the air duct close to the enclosure, and the air guide is used in conjunction with the adjustment plate.

[0018] By adopting the above technical solution, by rotating the adjusting bolt and cooperating with the thread of the adjusting bolt and the screw sleeve, the adjusting plate can be driven to slide in the fixed block to change the size of the vent, and the direction of the air intake can be adjusted through the air guide, thereby realizing flexible adjustment of the vent size and ventilation direction, thereby facilitating the simulation of the trend of fire spreading along the outer wall of the building. Therefore, it is possible to simulate the fire scenes of high-rise buildings under different ventilation conditions, providing an effective means for studying the influence of ventilation on fire.

[0019] The present invention is further configured as follows: the air guide member includes a plurality of movable blades, and the movable blades are movably arranged in a stacked manner inside the wind tube close to the enclosure side, a support plate is penetrated between the interior of the plurality of movable blades away from the enclosure side, and the top and bottom of the support plate are connected to the inner wall of the wind tube, the front and rear sides of the support plate are bolted with a plurality of positioning rods, and the positioning rods are rotatably connected to the side close to the movable blades, an adjusting screw is rotatably connected to the inside of the wind tube, and a plurality of screw blocks are threadedly connected to the surface of the adjusting screw, a connecting rod is rotatably connected to the side of the screw sleeve close to the movable blade, and the other end of the connecting rod is rotatably connected to the movable blade.

[0020] By adopting the above technical solution, an air guide is set up, and by rotating the adjusting screw, and with the cooperation of the screw block and the thread of the adjusting screw, multiple screw blocks can be moved synchronously on the adjusting screw, and the movable blades can be driven to rotate around the positioning rod through the connecting rod. Therefore, multiple movable blades rotate in coordination to change the ventilation direction, making the adjustment of the ventilation direction more precise and flexible, and being able to more accurately simulate the ventilation conditions in actual high-rise buildings, thereby improving the applicability of the ventilation assembly to fire research. The support plate provides support and positioning for the movable blades, ensuring the stability of the rotation of the movable blades.

[0021] The present invention is further configured as follows: the positioning rod and the connecting rod both correspond to the positions of the movable blades one by one, connecting frames are rotatably provided at both ends of the connecting rod, and the connecting rod is rotatably connected to the movable blades and the screw blocks respectively through the connecting frames.

[0022] By adopting the above technical solution, through the corresponding setting of the positioning rod, the connecting rod and the movable blade, and the use of the connecting frame, it is ensured that the connecting rod can effectively drive the movable blade to rotate, making the adjustment of the ventilation direction more reliable and stable, and improving the working efficiency and adjustment accuracy of the ventilation assembly.

[0023] The present invention is further configured as follows: a fixing seat is slidably provided on the top of the bottom plate, a fuel support is bolted inside the fixing seat, and a pull rod is bolted on the front side of the fixing seat.

[0024] By adopting the above technical solution, the position adjustment of the fuel support is facilitated by the sliding setting of the fixed seat and the fuel support on the bottom plate, as well as the setting of the pull rod. The fuel can be placed at different positions in the combustion chamber according to the experimental requirements to simulate the fire conditions at different positions of the high-rise building, thereby improving the flexibility of the combustion chamber and the operability of the experiment.

[0025] The present invention is further configured as follows: a window is provided on the front side of the enclosure, air vents are provided on both sides of the enclosure, and the air vents are connected to the air duct.

[0026] By adopting the above technical solution, through the window setting on the enclosure and the connection between the air outlet and the wind duct, the ventilation assembly can better cooperate with the internal space of the combustion chamber to realize the ventilation function. The window can be used to observe the situation in the combustion chamber, and the air outlet ensures smooth ventilation, thereby improving the practicality of the combustion chamber and the accuracy of ventilation simulation.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. By setting adjustment components, different sizes and states of vertical passages in high-rise buildings, such as elevator shafts and pipe shafts, can be simulated, which can more realistically study the spread characteristics of smoke and fire in vertical passages, help formulate more effective vertical fire separation measures, and improve the prevention and control capabilities of high-rise building fires;

[0029] 2. By setting up ventilation components, the size and ventilation direction of the vents can be flexibly adjusted. It can simulate fire scenes in high-rise buildings under different ventilation conditions, such as window opening status, ventilation duct operation, external wind influence, etc., and deeply explore the influence of ventilation on the characteristics of fire and smoke, providing a basis for optimizing the building ventilation system and smoke exhaust design. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the main structure of the simulated combustion chamber of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the regulating component of the present invention;

[0033] Figure 4 The present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0034] Figure 5 is a schematic diagram of the connection between the enclosure and the ventilation assembly of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the air guide member of the present invention;

[0036] Figure 7 It is a schematic diagram of the bottom plate structure of the present invention.

[0037] 1. Simulated combustion chamber body; 2. Bottom plate; 3. Enclosure; 4. Cover plate; 5. Partition plate; 6. Inner vertical plate; 7. Ventilation assembly; 71. Air duct; 72. Fixed block; 73. Adjustment plate; 74. Adjustment bolt; 75. Screw sleeve; 76. Positioning plate; 77. Air guide; 771. Movable blade; 772. Support plate; 773. Positioning rod; 774. Adjustment screw; 775. Connecting rod; 776. Screw block; 8. Adjustment assembly; 81. Fixed plate; 82. Movable ring; 83. Gear; 84. Adjustment blade; 85. Tooth groove; 9. Limit block; 10. Limit ring; 11. Movable plate; 12. Electric cylinder structure; 13. Fixed seat; 14. Fuel support; 15. Pull rod; 16. Vertical channel. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0039] refer to Figure 1-7 A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires includes a simulated combustion chamber body 1, the simulated combustion chamber body 1 includes a bottom plate 2, a plurality of enclosures 3 are arranged on the top of the bottom plate 2, and a cover plate 4 is bolted to the top of the top enclosure 3, a partition 5 is bolted between the opposite sides of two adjacent enclosures 3, an inner vertical plate 6 is bolted to the inside of the enclosure 3, ventilation components 7 are bolted to both sides of the enclosure 3, and adjustment components 8 are bolted to the top of the cover plate 4 and the partition 5. By designing the simulated combustion chamber body 1 composed of the bottom plate 2, the enclosure 3, the partition 5 and the cover plate 4, a layered spatial structure is formed. This structure can simulate the spatial layout of different floors of a high-rise building, and different combustion conditions and materials can be set on different floors, so as to accurately study the fire on each floor of the high-rise building. The development and spread characteristics of smoke and fire can be studied by adjusting the component 8 to simulate the different sizes and states of the vertical passages 16 of high-rise buildings, such as elevator shafts and pipe shafts, so as to more realistically study the spread characteristics of smoke and fire in the vertical passages 16, which is helpful to formulate more effective vertical fire separation measures and improve the prevention and control capabilities of high-rise building fires. Moreover, the size and ventilation direction of the vents can be flexibly adjusted through the ventilation component 7, so as to simulate the fire scenes of high-rise buildings under different ventilation conditions, such as the opening state of windows, the operation of ventilation ducts, the influence of external wind force, etc., and deeply explore the influence of ventilation on the characteristics of fire and fire, so as to provide a basis for optimizing the building ventilation system and smoke exhaust design.

[0040] like Figure 3As shown, the adjustment component 8 includes a fixed plate 81, which is bolted to the top of the cover plate 4 and the partition plate 5 respectively. The top of the fixed plate 81 is rotatably connected with a movable ring 82, and the four corners of the top of the fixed plate 81 are rotatably connected with gears 83, and a plurality of adjustment blades 84 are slidably arranged on the top of the fixed plate 81, and a rectangular cavity is formed between the adjustment blades 84. The adjustment blades 84 and the movable ring 82 are both provided with tooth grooves 85 on the side close to the gear 83, and the tooth grooves 85 are meshed with the teeth. By setting the adjustment component 8, the movable ring 82 is rotated, and the tooth grooves 85 on the movable ring 82 will synchronously bring The movable gear 83 rotates, and at the same time, the gear 83 meshes with the tooth groove 85 on the adjusting blade 84, so that multiple adjusting blades 84 can slide on the fixed plate 81 at the same time, thereby changing the size of the rectangular cavity between the adjusting blades 84, thereby simulating the size change of the vertical channel 16, and then simulating the different sizes of the vertical channel 16 of the high-rise building, thereby improving the accuracy and flexibility of the study on the fire characteristics of the vertical channel 16, and the partition 5 or the cover plate 4 can be closed or opened, thereby simulating the chimney effect of the flame in the high-rise building and the fire plume shape, respectively, and having a variety of high-rise building fire simulation effects.

[0041] like Figure 3 As shown, limit blocks 9 are provided at the four corners of the top of the fixed plate 81, and the adjusting blade 84 is slidably sleeved on the surface of the limit blocks 9. A limit hole used in conjunction with the limit blocks 9 is opened inside the adjusting blade 84. The setting of the limit blocks 9 and the limit holes ensures the stability and accuracy of the movement of the adjusting blade 84, prevents the adjusting blade 84 from shifting or shaking during the movement, ensures that the shape and size of the rectangular cavity can be accurately adjusted, and improves the reliability of the adjusting component 8.

[0042] like Figure 3 and Figure 4 As shown, a limit ring 10 is bolted to the top of the fixed plate 81, and the movable ring 82 is inside the limit ring 10. A notch is provided on the right side of the limit ring 10, and a movable plate 11 is provided on the right side of the movable ring 82, and the movable plate 11 is inside the notch. The left side of the movable plate 11 is rotatably connected to an electric cylinder structure 12, and the electric cylinder structure 12 is rotatably connected to the cover plate 4 and the partition plate 5 respectively. The limit ring 10 can limit the movable ring 82 so that it can only rotate inside the limit ring 10. The setting of the electric cylinder structure 12 and the movable plate 11 can drive the movable plate 11 and synchronously drive the movable ring 82 to rotate.

[0043] like Figure 1 and Figure 2As shown, vertical channels 16 are opened inside the cover plate 4, the partition plate 5 and the fixed plate 81, and two adjacent vertical channels 16 are connected to the rectangular cavity. The opening of the vertical channels 16 enables two adjacent vertical channels 16 to be connected to the rectangular cavity, forming a complete channel simulation system, which is convenient for studying the spread path and characteristics of smoke and fire in the vertical channels 16, and improves the effectiveness of the combustion chamber in simulating fires in the vertical channels 16 of high-rise buildings.

[0044] like Figure 5 As shown, the ventilation assembly 7 includes an air cylinder 71, and the side of the air cylinder 71 close to the enclosure 3 is bolted thereto, and the inner part of the air cylinder 71 away from the enclosure 3 is bolted with a fixing block 72, and the inner part of the fixing block 72 is slidably provided with an adjusting plate 73, the rear side of the adjusting plate 73 is rotatably connected with an adjusting bolt 74, and the rear side of the adjusting bolt 74 extends to the outer side of the air cylinder 71 and is threadedly sleeved with a screw sleeve 75, and both sides of the screw sleeve 75 are bolted with positioning plates 76, and the front side of the positioning plate 76 is bolted to the air cylinder 71, and the inner part of the air cylinder 71 close to the enclosure 3 is provided with an air guide. 77, and the air guide member 77 is used in conjunction with the adjustment plate 73. By rotating the adjusting bolt 74 and cooperating with the thread of the adjusting bolt 74 and the screw sleeve 75, the adjusting plate 73 can be driven to slide in the fixed block 72 to change the size of the vent. The direction of the air intake can be adjusted by the air guide member 77, thereby realizing flexible adjustment of the vent size and ventilation direction, thereby simulating the trend of fire spreading along the outer wall of the building. Therefore, it is possible to simulate the fire scenes of high-rise buildings under different ventilation conditions, providing an effective means for studying the influence of ventilation on fire.

[0045] like Figure 6As shown, the air guide member 77 includes a plurality of movable blades 771, which are stacked and movably arranged inside the wind tube 71 on the side close to the enclosure 3, and a support plate 772 runs through the inside of the plurality of movable blades 771 away from the enclosure 3, and the top and bottom of the support plate 772 are connected to the inner wall of the wind tube 71, and the front and rear sides of the support plate 772 are bolted with a plurality of positioning rods 773, and the positioning rod 773 is rotatably connected to the side close to the movable blade 771, and the inside of the wind tube 71 is rotatably connected with an adjusting screw 774, and the surface of the adjusting screw 774 is threadedly connected with a plurality of screw blocks 776, and the side of the screw sleeve 75 close to the movable blade 771 is rotatably connected with a connecting rod 775, and the connecting rod 776 is connected to the connecting rod 776. The other end of 75 is rotatably connected to the movable blade 771. By setting the air guide 77, the adjusting screw 774 can be rotated, and under the thread cooperation of the screw block 776 and the adjusting screw 774, multiple screw blocks 776 can be synchronously moved on the adjusting screw 774, and the movable blade 771 can be driven to rotate around the positioning rod 773 through the connecting rod 775. Therefore, multiple movable blades 771 rotate in coordination to change the ventilation direction, making the adjustment of the ventilation direction more precise and flexible, and being able to more accurately simulate the ventilation conditions in actual high-rise buildings, thereby improving the applicability of the ventilation assembly 7 to fire research. The support plate 772 provides support and positioning for the movable blade 771, ensuring the stability of the rotation of the movable blade 771.

[0046] like Figure 6 As shown, the positioning rod 773 and the connecting rod 775 correspond to the positions of the movable blades 771 one by one, and connecting frames are rotatably provided at both ends of the connecting rod 775, and the connecting rod 775 is rotatably connected to the movable blades 771 and the screw block 776 respectively through the connecting frames. The corresponding arrangement of the positioning rod 773 and the connecting rod 775 and the movable blades 771, and the use of the connecting frames ensure that the connecting rod 775 can effectively drive the movable blades 771 to rotate, making the adjustment of the ventilation direction more reliable and stable, and improving the working efficiency and adjustment accuracy of the ventilation assembly 7.

[0047] like Figure 7 As shown, a fixing seat 13 is slidably provided on the top of the base plate 2, and a fuel support 14 is bolted inside the fixing seat 13, and a pull rod 15 is bolted on the front side of the fixing seat 13. The fixing seat 13 and the fuel support 14 slidably provided on the base plate 2, as well as the setting of the pull rod 15, facilitate the position adjustment of the fuel support 14, and the fuel can be placed in different positions of the combustion chamber according to the experimental requirements to simulate the fire conditions at different positions of the high-rise building, thereby improving the flexibility of the combustion chamber and the operability of the experiment.

[0048] like Figure 1 and Figure 2As shown, a window is provided on the front side of the enclosure 3, and air vents are provided on both sides of the enclosure 3, and the air vents are connected with the wind tube 71. Through the window setting on the enclosure 3 and the connection between the air vents and the wind tube 71, the ventilation assembly 7 can better cooperate with the internal space of the combustion chamber to realize the ventilation function. The window can be used to observe the situation in the combustion chamber, and the air vents ensure smooth ventilation, thereby improving the practicality of the combustion chamber and the accuracy of ventilation simulation.

[0049] Brief description of the use process: According to the experimental requirements, pull the pull rod 15 on the front side of the fixing seat 13 to make the fixing seat 13 slide on the bottom plate 2, move the fuel support 14 to a suitable position, and then place the required fuel on the fuel support 14 to complete the fuel preparation. Before the experiment begins, set the ventilation assembly 7 according to the preset ventilation conditions. For the adjustment of the size of the vent, rotate the adjusting bolt 74. Since the adjusting bolt 74 is threadedly matched with the screw sleeve 75, the rotation of the adjusting bolt 74 will drive the adjusting plate 73 to slide in the fixing block 72, thereby changing the size of the vent. For the adjustment of the ventilation direction, rotate the adjusting screw 774. , the screw block 776 is threadedly matched with the adjusting screw rod 774, so that multiple screw blocks 776 move synchronously on the adjusting screw rod 774, and the screw block 776 drives the movable blade 771 to rotate around the positioning rod 773 through the connecting rod 775, and multiple movable blades 771 rotate in coordination to adjust the ventilation direction; then, according to the requirements of the size and state of the simulated high-rise building vertical channel 16, the movable plate 11 is driven by the electric cylinder structure 12, and the movement of the movable plate 11 will drive the movable ring 82 to rotate in the limit ring 10. When the movable ring 82 rotates, the tooth groove 85 on it drives the gear 83 to rotate, and the gear 83 then meshes with the tooth groove 85 on the adjusting blade 84, so that A plurality of adjusting blades 84 slide on the fixed plate 81 at the same time, changing the size of the rectangular cavity between the adjusting blades 84, and completing the initial setting of the simulated size of the vertical channel 16; then, the fuel placed on the fuel support 14 is ignited to simulate the occurrence of a high-rise building fire. During the combustion process, the ventilation assembly 7 is further adjusted according to the experimental design, and the operation steps of the ventilation assembly 7 can be repeated. In this way, the fire scene of a high-rise building under different ventilation conditions is simulated, and the influence of ventilation on the pyrotechnic characteristics of the fire is studied; as the combustion proceeds, flames and smoke will pass through the cover plate 4, the partition plate 5 and the vertical channel 16 inside the fixed plate 81, as well as The rectangular cavity propagates between different layers. Since the rectangular cavity set by the adjustment component 8 simulates the vertical channel 16 of a high-rise building, researchers can observe the spread path and characteristics of fireworks in the vertical channel 16, such as the rising speed of the flame, the flow of smoke, etc. By adjusting the adjustment component 8 to change the size of the rectangular cavity, the influence of vertical channels 16 of different sizes on the spread of fireworks can also be studied, simulating the chimney effect and the fire plume morphology in high-rise buildings. Through the above working process, the modular combustion chamber structure can effectively simulate various scenarios of high-rise building fires, and provide a reliable experimental platform for studying the characteristics of fireworks in high-rise building fires.

[0050] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires, comprising a simulated combustion chamber body (1), characterized in that: The simulated combustion chamber body (1) comprises a bottom plate (2), a plurality of enclosures (3) are arranged on the top of the bottom plate (2), a cover plate (4) is bolted to the top of the top enclosure (3), a partition plate (5) is bolted between the opposite sides of two adjacent enclosures (3), an inner vertical plate (6) is bolted to the inside of the enclosure (3), ventilation components (7) are bolted to both sides of the enclosure (3), and adjustment components (8) are bolted to the top of the inside of the cover plate (4) and the partition plate (5).

2. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 1, characterized in that: The adjustment assembly (8) comprises a fixed plate (81), wherein the fixed plate (81) is bolted to the top of the cover plate (4) and the inner top of the partition plate (5), respectively; the top of the fixed plate (81) is rotatably connected to a movable ring (82); the four corners of the top of the fixed plate (81) are rotatably connected to gears (83); and the top of the fixed plate (81) is slidably provided with a plurality of adjustment blades (84); a rectangular cavity is formed between the adjustment blades (84); and tooth grooves (85) are provided on one side of the adjustment blades (84) and the movable ring (82) close to the gear (83), and the tooth grooves (85) are meshed with the teeth.

3. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 2, characterized in that: Limiting blocks (9) are arranged at the four corners of the top of the fixing plate (81), and the adjusting blade (84) is slidably sleeved on the surface of the limiting block (9), and a limiting hole for use with the limiting block (9) is opened inside the adjusting blade (84).

4. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 2, characterized in that: The top of the fixed plate (81) is bolted to a limit ring (10), and the movable ring (82) is located inside the limit ring (10); a notch is provided on the right side of the limit ring (10); a movable plate (11) is provided on the right side of the movable ring (82), and the movable plate (11) is located inside the notch; the left side of the movable plate (11) is rotatably connected to an electric cylinder structure (12), and the electric cylinder structure (12) is rotatably connected to the cover plate (4) and the partition plate (5), respectively.

5. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 2, characterized in that: The cover plate (4), the partition plate (5) and the fixing plate (81) are all provided with vertical channels (16) inside, and two adjacent vertical channels (16) are connected to the rectangular cavity.

6. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 1, characterized in that: The ventilation assembly (7) comprises an air duct (71), wherein the side of the air duct (71) close to the enclosure (3) is bolted thereto, the side of the air duct (71) away from the enclosure (3) is bolted with a fixing block (72) inside, and an adjusting plate (73) is slidably arranged inside the fixing block (72), the rear side of the adjusting plate (73) is rotatably connected with an adjusting bolt (74), and the rear side of the adjusting bolt (74) extends to the outside of the air duct (71) and is threadedly sleeved with a screw sleeve (75), both sides of the screw sleeve (75) are bolted with positioning plates (76), and the front side of the positioning plate (76) is bolted to the air duct (71), and the side of the air duct (71) close to the enclosure (3) is provided with an air guide (77), and the air guide (77) is used in conjunction with the adjusting plate (73).

7. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 6, characterized in that: The air guide member (77) comprises a plurality of movable blades (771), the movable blades (771) being movably arranged in a stacked manner inside the wind tube (71) on a side close to the enclosure (3), a support plate (772) penetrating between the inside of the plurality of movable blades (771) on a side away from the enclosure (3), and the top and bottom of the support plate (772) are both connected to the inner wall of the wind tube (71), the front and rear sides of the support plate (772) are both bolted with a plurality of positioning rods (773), and the positioning rods (773) are rotatably connected to the side close to the movable blades (771), the inside of the wind tube (71) is rotatably connected with an adjusting screw (774), and the surface of the adjusting screw (774) is threadedly connected with a plurality of screw blocks (776), the screw sleeve (75) is rotatably connected with a connecting rod (775) on a side close to the movable blades (771), and the other end of the connecting rod (775) is rotatably connected to the movable blades (771).

8. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 7, characterized in that: The positioning rod (773) and the connecting rod (775) both correspond to the positions of the movable blades (771) one by one. Connecting frames are rotatably provided at both ends of the connecting rod (775), and the connecting rod (775) is rotatably connected to the movable blades (771) and the screw block (776) respectively through the connecting frames.

9. A modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 1, characterized in that: A fixing seat (13) is slidably arranged on the top of the bottom plate (2), a fuel support seat (14) is bolted inside the fixing seat (13), and a pull rod (15) is bolted on the front side of the fixing seat (13).

10. The modular combustion chamber structure for studying the pyrotechnic characteristics of high-rise building fires according to claim 6, characterized in that: A window is provided on the front side of the enclosure (3), and air outlets are provided on both sides of the enclosure (3), and the air outlets are connected to the air duct (71).

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