Experimental device for simulating fire whirlwind of building

Abstract

The utility model relates to the technical field of fire whirlwind experiments, in particular to a building fire whirlwind simulation experiment device which comprises a box body, a combustion cell is placed in the bottom end of the box body, a top cover is hinged to one side of the top end of the box body, an observation window is arranged on one side of the box body, side openings are formed in the periphery of the bottom end of the box body, and a fire whirlwind simulation device is arranged in the box body. The four side openings are arranged in a central symmetry mode, a door plate is hinged to the inner sides of the side openings, a push-pull assembly is fixed to one side of each side opening, and a sliding guide assembly connected with the side wall of the door plate is rotationally installed at the end, close to the door plate, of each push-pull assembly. The four push-and-pull assemblies are sequentially pushed to be matched with the sliding guide assembly, so that the door plate is turned over towards the interior of the box body along the edge of the side opening, heat flow in the box body sucks outside air into the bottom end of the box body from the gap between the side opening and the door plate, and burning flames rapidly form fire whirlwind.

Description

Technical Field

[0001] The utility model relates to the technical field of fire cyclone experiments, in particular to a device for simulating building fire cyclone experiments. Background Art

[0002] Fire whirl is an extreme fire behavior, commonly seen in forest fires and building fires. It is essentially a swirling flow with chemical reactions, belonging to a rotating thermal fluid, and is often the product of forced circulation. For buildings in the external wind flow field, especially high-rise buildings, due to changes in wind speed, wind direction and surrounding airflow, each surface is subject to different pressures. Combined with different ventilation openings, various forms of flow fields are induced inside the building. These flow fields interact with the fire, and fire whirls are easily formed inside the building.

[0003] Unlike fire tornadoes in forest or urban fires, the fire tornado phenomenon inside a building is a fire behavior in a confined space. Due to the restrictions, its scale is relatively small, but it poses a great threat to the building structure and the escape of personnel. Therefore, it is necessary to design an experimental device to simulate the occurrence of fire tornadoes inside buildings. Utility Model Content

[0004] The utility model aims to provide a simulated building fire cyclone experimental device to solve the problems raised in the above background technology.

[0005] The technical solution of the utility model is: a simulated building fire cyclone experimental device, comprising a box body, a combustion pool is placed inside the bottom end of the box body, a top cover is hinged on one side of the top end of the box body, an observation window is arranged on one side of the box body, side openings are opened around the bottom end of the box body, four side openings are arranged symmetrically with respect to the center, door panels are hinged on the inner sides of the side openings, a push-pull assembly is fixed on one side of the side opening, and a sliding guide assembly connected to the side wall of the door panel is rotatably installed on one end of the push-pull assembly close to the door panel.

[0006] The effects achieved by the above components are: combustion work can be carried out through the combustion pool, and then the box is moved and mounted outside the combustion pool, the top cover is opened to simulate the collapse of the building roof, so that the heat flow generated by the flame is released to the top of the box, and then the four push-pull components are pushed in turn and the sliding guide components are cooperated to make the door panel flip toward the inside of the box along the edge of the side opening. Due to the heat flow in the box, the outside air is negatively sucked from the gap between the side opening and the door panel to the inside of the bottom of the box. The airflow in four directions enters the surrounding side of the bottom of the combustion pool under the guidance of the door panel, so that the burning flame quickly forms a fire whirlwind. Then, the number of door panels opened and the gap and angle between the door panel and the side opening can be changed to complete the collection of experimental data. If the height of the fire whirlwind exceeds the top opening of the box during the experiment, the top cover can also be flipped over to seal it to avoid accidents.

[0007] Preferably, the push-pull assembly includes a side block fixed on the inner wall of the side opening, a pull rod is slidably inserted on the side block, a clamping bolt is threadedly inserted on the top of the side block, a damping groove is formed on the top of the pull rod and abuts against the bottom end of the clamping bolt, and one end of the pull rod is rotatably connected to the moving end of the sliding guide assembly.

[0008] The effects achieved by the above components are: by pulling or pushing the pull rod, it can slide along the side block and cooperate with the sliding guide assembly to adjust the opening size of the door panel. In addition, the tightening action of the tightening bolt and the damping groove can position and lock the pull rod and the door panel to prevent the door panel from shaking when outside air enters the box.

[0009] Preferably, the sliding guide assembly comprises a guide groove plate fixed on the door panel, and a sliding block rotatably connected to the end of the pull rod is slidably installed in the guide groove plate.

[0010] The effect achieved by the above components is that the guide groove plate can guide the slider when the pull rod is pulled or pushed, thereby facilitating the opening and closing of the door panel.

[0011] Preferably, a guide rod slidably inserted on the sliding block is fixed to an inner wall of one side of the guide groove plate, and one end of the guide rod is sleeved with a spring that contacts the sliding block.

[0012] The effects achieved by the above components are: the slider can be guided by the guide rod, and the spring can be compressed by the slider when the door panel is opened. When the restricting effect of the tightening bolt on the pull rod is loosened, the spring pushes the slider and the pull rod to reset, thereby achieving the purpose of rapid reset of the door panel.

[0013] Preferably, air guide strips distributed at equal distances are fixed on the outer wall of the door panel.

[0014] The effect achieved by the above components is that the air guide strips can cooperate with the door panels to guide the air from the outside into the box, making the air flow guidance more stable.

[0015] The utility model provides a simulated building fire cyclone experimental device through improvement, which has the following improvements and advantages compared with the prior art:

[0016] The utility model can carry out combustion work through the combustion pool, then carry and sleeve the box body outside the combustion pool, open the top cover to simulate the collapse of the roof of the building, so that the heat flow generated by the flame is released to the top of the box body, and then push the four push-pull components in turn and cooperate with the sliding guide component to make the door panel flip toward the inside of the box body along the edge of the side opening. Due to the heat flow in the box body, the outside air is negatively sucked into the bottom of the box body from the gap between the side opening and the door panel. The airflow in four directions enters the bottom side of the combustion pool under the guidance of the door panel, so that the burning flame quickly forms a fire whirlwind. Then, the opening number of the door panel and the gap and angle between the door panel and the side opening can be changed to complete the collection of experimental data. If the height of the fire whirlwind exceeds the top opening of the box body during the experiment, the top cover can also be flipped over to seal it to avoid accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the experimental state of the utility model;

[0020] Figure 3 It is a schematic diagram of the top view of the structure of the utility model in the test state;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the utility model in an open state of the door body.

[0022] Description of reference numerals:

[0023] 1. Box body; 2. Combustion pool; 3. Side opening; 4. Door panel; 5. Air guide strip; 6. Push-pull assembly; 61. Side block; 62. Pull rod; 63. Damping groove; 64. Tightening bolt; 7. Observation window; 8. Top cover; 9. Sliding guide assembly; 91. Guide groove plate; 92. Sliding block; 93. Guide rod; 94. Spring. DETAILED DESCRIPTION

[0024] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a simulated building fire cyclone experimental device through improvement. The technical solution of the utility model is:

[0026] In the embodiments of the present invention, Figure 1-Figure 4 As shown, a simulated building fire cyclone experimental device comprises a box body 1, a burning pool 2 is placed inside the bottom end of the box body 1, a top cover 8 is hinged on one side of the top end of the box body 1, combustion can be performed through the burning pool 2, and then the box body 1 is carried and sleeved on the outside of the burning pool 2, the top cover 8 is opened to simulate the collapse of the roof of the building, so that the heat flow generated by the flame is released to the top of the box body 1, an observation window 7 is arranged on one side of the box body 1, side openings 3 are opened around the bottom end of the box body 1, the four side openings 3 are arranged symmetrically with the center, and a door panel 4 is hinged on the inner side of the side opening 3, and the door panel The outer wall of the side opening 4 is fixed with air guide strips 5 distributed at equal distances, and the air guide strips 5 can cooperate with the door panel 4 to guide the air entering the box body 1 from the outside, so that the air flow guidance is more stable. A push-pull assembly 6 is fixed on one side of the side opening 3. The end of the push-pull assembly 6 close to the door panel 4 is rotatably installed with a sliding guide assembly 9 connected to the side wall of the door panel 4. The push-pull assembly 6 includes a side block 61 fixed on the inner wall of the side opening 3, a pull rod 62 is slidably inserted on the side block 61, a tightening bolt 64 is threadedly inserted on the top of the side block 61, and a tightening bolt 64 is provided on the top of the pull rod 62. The bottom end of the bolt 64 abuts against the damping groove 63, and one end of the pull rod 62 is rotatably connected to the moving end of the sliding guide assembly 9. By pulling or pushing the pull rod 62, it can slide along the side block 61 and cooperate with the sliding guide assembly 9 to adjust the opening size of the door panel 4. In addition, the tightening action of the tightening bolt 64 and the damping groove 63 can position and lock the pull rod 62 and the door panel 4 to prevent the door panel 4 from shaking when the outside air enters the box body 1. The four push-pull assemblies 6 are pushed in turn and cooperate with the sliding guide assembly 9 to make the door panel 4 move along the side The edge of the opening 3 is flipped toward the inside of the box body 1. Due to the heat flow in the box body 1, the outside air is negatively sucked from the gap between the side opening 3 and the door panel 4 to the inside of the bottom end of the box body 1. The airflows in four directions enter the bottom side of the combustion pool 2 under the guidance of the door panel 4, so that the burning flame quickly forms a fire whirlwind. Then, the number of door panels 4 opened and the gap and angle between the door panels 4 and the side opening 3 can be changed to complete the collection of experimental data. If the height of the fire whirlwind exceeds the top opening of the box body 1 during the experiment, the top cover 8 can also be flipped over to seal it to avoid accidents.

[0027] In the embodiment of the utility model, the sliding guide assembly 9 includes a guide groove plate 91 fixed on the door panel 4, a slider 92 rotatably connected to the end of the pull rod 62 is slidably installed in the guide groove plate 91, a guide rod 93 slidably inserted on the slider 92 is fixed to the inner wall of one side of the guide groove plate 91, and a spring 94 that contacts the slider 92 is sleeved on one end of the guide rod 93. The slider 92 can be guided by the guide groove plate 91 when the pull rod 62 is pulled or pushed, which is convenient for opening and closing the door panel 4. The slider 92 can be guided by the guide rod 93, and the spring 94 can be compressed by the slider 92 when the door panel 4 is opened. When the restricting effect of the tightening bolt 64 on the pull rod 62 is loosened, the spring 94 pushes the slider 92 and the pull rod 62 to reset, thereby achieving the purpose of rapid reset of the door panel 4.

[0028] The working principle of a simulated building fire cyclone experimental device provided by the utility model is as follows: combustion work can be carried out through the combustion pool 2, and then the box 1 is moved and sleeved outside the combustion pool 2, and the top cover 8 is opened to simulate the collapse of the building roof, so that the heat flow generated by the flame is released to the top of the box 1, and then the pull rod 62 is pulled or pushed in turn to make it slide along the side block 61 and cooperate with the sliding guide component 9 to adjust the opening size of the door panel 4. In addition, the pull rod 62 and the door panel 4 can be positioned and locked by the tightening effect of the tightening bolt 64 and the damping groove 63 to prevent the door panel 4 from shaking when the outside air enters the box 1. The guide groove plate 91 can guide the slider 92 when the pull rod 62 is pulled or pushed, and the guide rod 93 can adjust the slider 92 It plays a guiding role, and the spring 94 can be compressed by the slider 92 when the door panel 4 is opened. When the restricting effect of the tightening bolt 64 on the pull rod 62 is loosened, the spring 94 pushes the slider 92 and the pull rod 62 to reset, thereby achieving the purpose of quickly resetting the door panel 4. Due to the heat flow in the box body 1, the outside air is negatively sucked from the gap between the side port 3 and the door panel 4 to the inside of the bottom end of the box body 1. The airflow in four directions enters the bottom side of the combustion pool 2 under the guiding action of the door panel 4, so that the burning flame quickly forms a fire whirlwind. Then, the opening number of the door panel 4 and the gap and angle between the door panel 4 and the side port 3 can be changed to complete the collection of experimental data. If the height of the fire whirlwind exceeds the top opening of the box body 1 during the experiment, the top cover 8 can also be flipped over for sealing to avoid accidents.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simulated building fire cyclone experimental device, comprising a box (1), wherein a combustion pool (2) is placed inside the bottom of the box (1), characterized in that: A top cover (8) is hingedly connected to one side of the top end of the box body (1); an observation window (7) is arranged on one side of the box body (1); side openings (3) are opened around the bottom end of the box body (1); the four side openings (3) are arranged symmetrically with respect to the center; a door panel (4) is hingedly connected to the inner side of the side opening (3); a push-pull assembly (6) is fixed to one side of the side opening (3); and a sliding guide assembly (9) connected to the side wall of the door panel (4) is rotatably mounted on one end of the push-pull assembly (6) close to the door panel (4).

2. A simulated building fire cyclone experimental device according to claim 1, characterized in that: The push-pull assembly (6) includes a side block (61) fixed on the inner wall of the side opening (3), a pull rod (62) is slidably inserted on the side block (61), a clamping bolt (64) is threadedly inserted on the top of the side block (61), a damping groove (63) is formed on the top of the pull rod (62) and contacts the bottom end of the clamping bolt (64), and one end of the pull rod (62) is rotatably connected to the moving end of the sliding guide assembly (9).

3. A simulated building fire cyclone experimental device according to claim 2, characterized in that: The sliding guide assembly (9) comprises a guide groove plate (91) fixed on the door plate (4), and a sliding block (92) rotatably connected to the end of the pull rod (62) is slidably installed in the guide groove plate (91).

4. A simulated building fire cyclone experimental device according to claim 3, characterized in that: A guide rod (93) slidably inserted on the slider (92) is fixed to the inner wall of one side of the guide groove plate (91), and one end of the guide rod (93) is sleeved with a spring (94) that contacts the slider (92).

5. The simulated building fire cyclone experimental device according to claim 1, characterized in that: Air guide strips (5) distributed at equal distances are fixed on the outer wall of the door panel (4).

Images