A highway tunnel fire ventilation and smoke exhaust test system

Abstract

The present invention discloses a highway tunnel fire ventilation and smoke exhaust test system, including a simulated tunnel component, wherein the simulated tunnel component includes a tunnel passage. The present invention adopts a fire and smoke simulation mechanism to simulate the starting point of a fire, the fire and smoke simulation mechanism can be moved and adjusted on a track, and the position of a bearing plate shell equipped with a fire source device, a smoke simulation component, and a heater can be adjusted, so that the starting point of the fire can be easily simulated, the smoke exhaust cone of the smoke simulation component can be adjusted in angle, and the heat-resistant chamber can be rotated, thereby adjusting the direction of the smoke exhaust cone to simulate different smoke outlet positions, and during the test process, the position of the bearing plate can also be adjusted to simulate the situation of fire spreading in a real fire, which is more flexible, and the air intake simulation mechanism simulates the air intake through an air intake jet fan, and the position and direction of the air intake jet fan are adjustable to simulate different wind directions, so that the test simulation is closer to reality and the test result is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel fire simulation testing, in particular to a highway tunnel fire ventilation and smoke exhaust testing system. Background Art

[0002] Due to the almost completely closed structural characteristics of the tunnel, the smoke and heat generated after a fire is difficult to be discharged in time, which can easily cause serious casualties and structural damage. High-temperature smoke is the most important hazard factor causing casualties in a fire. How to timely and efficiently discharge the high-temperature smoke generated by the fire from the tunnel after a fire in the tunnel is the key. Tunnel smoke exhaust modes include natural smoke exhaust and mechanical smoke exhaust. Mechanical smoke exhaust includes longitudinal smoke exhaust mode, transverse smoke exhaust mode and a combined smoke exhaust mode combining longitudinal and transverse. The natural smoke exhaust mode is to set a ventilation shaft at the top of the tunnel and use the chimney effect formed by the smoke in the slope tunnel and the shaft to discharge the smoke out of the tunnel. Due to its economic, practical and simple characteristics, it is widely used in short tunnels and one-way tunnels. However, the internal structure of the tunnel is complex and the types of fire vary. In order to facilitate the selection of a better smoke exhaust method, it is necessary to simulate the tunnel fire, facilitate experimental testing, and determine the best smoke exhaust method. In this regard, the Chinese invention patent application with publication number CN110907210A discloses a double-layer shield highway tunnel fire ventilation system. The wind and smoke exhaust test platform discloses a test tunnel, a data acquisition device, a fan device, a fire source device and a smoke generating device. The overall frame of the test tunnel is an angle steel welded component, and its wall is made of fireproof material. The test tunnel includes an upper arc tunnel and a lower rectangular tunnel, and the bottom is provided with the fire source device and the smoke generating device. The left and right sides of the test tunnel are respectively provided with an evacuation channel and a smoke exhaust structure, and the smoke exhaust structure includes a smoke exhaust port and a smoke exhaust channel, and the smoke exhaust port is an upper and lower layer. The fan device includes an air inlet jet fan and an axial flow fan; however, the current tunnel fire simulation test system has the following defects:

[0003] The current tunnel fire simulation test system uses fire source devices and smoke generators to simulate the ignition of fire. However, the positions of the fire source devices and smoke generators cannot be adjusted, making it difficult to simulate different types of fires. This results in poor experimental diversity and difficulty in simulating multiple types of fires in real fires, which affects the test results.

[0004] To this end, we propose a highway tunnel fire ventilation and smoke exhaust test system to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a highway tunnel fire ventilation and smoke exhaust test system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a highway tunnel fire ventilation and smoke exhaust test system, comprising a simulated tunnel component, the simulated tunnel component comprising a tunnel passage, the top surface of the tunnel passage is fixedly connected to an arc-shaped top, one side of the tunnel passage is fixedly connected to an escape passage, the other side of the tunnel passage is fixedly connected to a transverse smoke exhaust passage, the top surface of the arc-shaped top is fixedly connected to a longitudinal smoke exhaust passage, the side wall of the transverse smoke exhaust passage is fixedly connected and connected to a plurality of smoke exhaust axial flow fans, the top surface of the longitudinal smoke exhaust passage is fixedly connected and connected to a plurality of smoke exhaust axial flow fans, the side wall of the transverse smoke exhaust passage is provided with a plurality of smoke exhaust mechanisms, the bottom surface of the longitudinal smoke exhaust passage is provided with a plurality of smoke exhaust mechanisms, a plurality of fire and smoke simulation mechanisms are provided in the tunnel passage, two tracks are fixedly connected to both sides of the bottom surface of the tunnel passage, an air intake simulation mechanism is provided at the end of the tunnel passage, the fire and smoke simulation mechanism comprises two side strips, four fire source devices, four smoke simulation components and four heaters, and a plurality of escape doors are provided on the side of the tunnel passage close to the escape passage;

[0007] The two side plates are parallel to each other, a bottom plate is fixedly connected between the bottom ends of the two side plates, an arc plate is fixedly connected between the top ends of the two side plates, the bottom ends of the bottom plates are rotatably connected to multiple guide wheels, the guide wheels roll and contact with the track, the side plates slide and contact with the side wall of the tunnel passage, and a first T-shaped slide groove is provided on the side of the side plate away from the side wall of the tunnel passage, and the first T-shaped slide groove is vertically slidably connected to the first T-shaped slider, the side wall of the first T-shaped slider is fixedly connected to the bearing plate on the top surface of the bottom plate, and the second T-shaped slide groove is horizontally slidably connected to the second T-shaped slider in the second T-shaped slide groove, the top surface of the second T-shaped slider is fixedly connected to the support plate, the top end of the support plate is fixedly connected to the bearing plate, the bottom surface of the arc plate is provided with an arc slide groove, and the arc slide groove is slidably connected to the arc slide, two vertical rods are fixedly connected to the bottom ends of the two vertical rods, a bearing plate is fixedly connected between the bottom ends of the two vertical rods, the top surface of each bearing plate is fixedly connected to a fire source device and a heater, and a smoke simulation component is provided at the end of each bearing plate.

[0008] Preferably, the smoke simulation component includes a heat-resistant chamber and a side frame, the top surface of the heat-resistant chamber is evenly rotated to connect a plurality of high-speed joints, the top of the high-speed joints is located outside the heat-resistant chamber and fixedly sleeved on the bottom surface of a hinge seat, the top surface of the hinge seat is rotatably connected to a rotating frame, and the top of the rotating frame is fixedly sleeved on the bottom end of a cone-shaped smoke exhaust port.

[0009] Preferably, a metal corrugated hose is fixedly connected and communicated between the bottom end of the smoke exhaust cone port and the top end of the high-speed joint, a smoke applicator is fixedly connected inside the heat-resistant bin, a circular plate is fixedly sleeved in the middle of the heat-resistant bin, the circular plate is rotatably sleeved on the inner side of the side frame, and the side frame is fixedly connected to the end of the load-bearing plate.

[0010] Preferably, the air intake simulation mechanism includes a base frame and two air intake jet fans, the top surface of the base frame is fixedly connected to two U-shaped frames, two third T-shaped slide grooves are opened on both sides of the U-shaped frame, each of the third T-shaped slide grooves is vertically slidably connected to two third T-shaped sliders, the two third T-shaped sliders in the two third T-shaped slide grooves are fixedly connected to the bottom plate, the center of the top surface of the bottom plate is rotatably connected to the turntable, and the air intake jet fan is fixedly connected to the top surface of the turntable.

[0011] Preferably, the smoke exhaust mechanism includes a smoke exhaust port, which is fixed on the side wall of the transverse smoke exhaust channel or the bottom surface of the longitudinal smoke exhaust channel, and the smoke exhaust port is connected to the tunnel channel. The smoke exhaust port is fixed with four end side plates on the side surrounding one end away from the tunnel channel, and a guide groove is provided on the surface of the end side plate, and a guide block is slidably connected in the guide groove, and a push plate is fixed to the surface of the guide block, and a triangular wind shield is fixed to the side of the push plate close to the smoke exhaust port, and the surface of the end side plate away from the smoke exhaust port is fixed to the cylinder, and the output end of the cylinder is fixed to the center of the push plate side wall.

[0012] Preferably, the side strip is rotatably connected to two first synchronous pulleys located above and below the first T-shaped slide groove, the first synchronous belt is sleeved on the two first synchronous pulleys, the first synchronous belt is fixedly connected to the first T-shaped slider, the side wall at the bottom end of the side strip is fixedly connected to the first servo reduction motor, the shaft end of the first servo reduction motor is fixedly connected to the shaft of the first synchronous pulley located below, the second T-shaped slide groove is horizontally rotatably connected to the first screw rod, the second T-shaped slider is fixedly connected to the first threaded sleeve, the first screw rod is threadedly connected to the first threaded sleeve, the second servo reduction motor is fixedly connected to the inside of the end of the bottom strip, and the shaft end of the second servo reduction motor is fixedly connected to the first screw rod.

[0013] Preferably, the arc strip plate is located above the arc slide groove and is evenly rotated to connect multiple second gears, the top surface of the arc slide block is fixedly connected to an arc rack, the arc rack is meshed and connected to multiple second gears at any position, each second gear shaft end is fixedly sleeved with two second synchronous pulleys, the second synchronous belts are sleeved on the second synchronous pulleys on two adjacent second gears, the center of the side wall of the arc strip plate is fixedly connected to the third servo reduction motor, the shaft end of the third servo reduction motor is fixedly connected to the shaft of one of the second gears, an arc guide rod is fixed in the arc slide groove, an arc guide hole is opened on the arc slide block, and the arc guide hole is slidably sleeved with the arc guide rod.

[0014] Preferably, the bottom surface of the bottom strip is fixedly connected to the bottom bin, the bottom surface of the bottom bin end is rotatably connected to the first gear, the side wall of the track is fixedly connected to the long rack, the first gear is meshedly connected to the long rack, the bottom surface of the bottom bin is fixedly connected to the fourth servo reduction motor, the shaft end of the fourth servo reduction motor is fixedly connected to the driving pulley, the inside of the bottom bin end is vertically rotatably connected to the rotating column, the bottom end of the rotating column is fixedly connected to the rotating shaft of the first gear, the driven pulley is fixedly connected to the rotating column, and the driving pulley and the driven pulley are connected to the fifth synchronous belt.

[0015] Preferably, the bottom end of each of the high-speed joints is located inside the heat-resistant warehouse and fixedly connected to two third synchronous pulleys, the third synchronous pulleys on the two adjacent high-speed joints are sleeved with a third synchronous belt, the sixth servo reduction motor is fixedly connected to one end of the heat-resistant warehouse, the shaft end of the sixth servo reduction motor is fixedly connected to a fourth synchronous pulley, the fourth synchronous pulley and the third synchronous pulley on the high-speed joint located at the end are sleeved with a fourth synchronous belt, the side wall of the hinge seat is fixedly connected to the fifth servo reduction motor, the shaft end of the fifth servo reduction motor is fixedly connected to the rotating shaft of the rotating frame, the side wall of the side frame is fixedly connected to the seventh servo reduction motor, the shaft end of the seventh servo reduction motor is located inside the side frame and fixedly connected to the third gear, the circumferential side of the circular plate is fixedly sleeved with the first gear ring, and the third gear is meshed and connected to the first gear ring.

[0016] Preferably, two second screw rods are vertically rotatably connected in the two third T-shaped slide grooves, the second threaded sleeve is fixedly connected to the third T-shaped sliding block, the second screw rod is threadedly connected to the second threaded sleeve, the bottom end of the U-shaped frame is horizontally rotatably connected to a rotating rod, two active bevel gears are fixedly sleeved at both ends of the rotating rod, the bottom ends of the two second screw rods are fixedly connected to two short shafts, the bottom ends of the short shafts are fixedly connected to the driven bevel gears, the active bevel gears are meshedly connected to the driven bevel gears, the side wall of the bottom end of the U-shaped frame is fixedly connected to the eighth servo reduction motor, the rotating shaft end of the eighth servo reduction motor is fixedly connected to the end of the rotating rod, the bottom surface of the end of the base plate is fixedly connected to the ninth servo reduction motor, the rotating shaft end of the ninth servo reduction motor is located inside the base plate and fixedly connected to the fourth gear, the peripheral side of the turntable is fixedly connected to the second gear ring, and the fourth gear is meshedly connected to the second gear ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention adopts a fire and smoke simulation mechanism to simulate the ignition point of a fire. The fire and smoke simulation mechanism can be moved and adjusted on a track, and the position of a bearing plate shell equipped with a fire source device, a smoke simulation component, and a heater can be adjusted, so that the fire position can be conveniently simulated. The smoke exhaust cone of the smoke simulation component can adjust the angle, and the heat-resistant bin can be rotated to adjust the direction of the smoke exhaust cone to simulate different smoke outlet positions. During the test, the position of the bearing plate can also be adjusted to simulate the situation of fire spread in a real fire, which is more flexible. The air intake simulation mechanism simulates the air intake through an air intake jet fan. The position and direction of the air intake jet fan are adjustable to simulate different wind directions, so that the test simulation is closer to reality and the test results are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure in the first and second embodiments of the present invention;

[0020] Figure 2 It is a schematic diagram of the main body cutaway structure in the first and second embodiments of the present invention;

[0021] Figure 3 It is a schematic cross-sectional structure diagram of the fire and smoke simulation mechanism in the first and second embodiments of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the structure at center A;

[0023] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 6 It is a schematic diagram of the structure of the bearing plate in the first and second embodiments of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-section structure of the smoke simulation component in the second embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the cross-section structure of the U-shaped frame in the second embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the cross-section structure of the bottom plate in the second embodiment of the present invention;

[0028] Fig.10 It is a structural schematic diagram of the smoke exhaust mechanism in the second embodiment of the present invention.

[0029] In the figure: 1. simulated tunnel component; 2. fire and smoke simulation mechanism; 3. air intake simulation mechanism; 11. tunnel passage; 12. arc-shaped top; 13. escape passage; 14. horizontal smoke exhaust passage; 15. longitudinal smoke exhaust passage; 16. smoke exhaust mechanism; 17. escape door; 18. track; 19. long rack; 110. smoke exhaust axial flow fan; 161. smoke exhaust port; 162. end side plate; 163. guide groove; 164. guide block; 165. push plate; 166. triangular windshield; 167. cylinder; 21. side strip plate; 22. bottom strip plate; 23. arc strip plate; 24. first T-shaped slide groove; 25. first T-shaped slide block; 2 6. Carrying plate; 27. Fire source device; 28. Smoke simulation component; 29. ​​Heater; 210. Second T-shaped slide; 211. Second T-shaped slider; 212. Support plate; 213. Arc slide; 214. Arc slider; 215. Vertical pole; 216. Bottom bin; 217. First gear; 218. First synchronous pulley; 219. First synchronous belt; 220. First servo reduction motor; 221. First screw rod; 222. First threaded sleeve; 223. Second servo reduction motor; 224. Second gear; 225. Second synchronous pulley; 226. Second synchronous belt; 227. Third servo reduction motor machine; 228, arc rack; 229, arc guide hole; 230, arc guide rod; 231, fourth servo reduction motor; 232, driving pulley; 233, rotating column; 234, driven pulley; 235, fifth synchronous belt; 236, guide wheel; 281, heat-resistant warehouse; 282, side frame; 283, high-speed joint; 284, hinge seat; 285, rotating frame; 286, smoke exhaust cone; 287, fifth servo reduction motor; 288, metal corrugated hose; 289, sixth servo reduction motor; 2810, third synchronous pulley; 2811, third synchronous belt; 2812, fourth synchronous pulley; 2813, The fourth synchronous belt; 2814, smoke applicator; 2815, circular plate; 2816, first gear ring; 2817, seventh servo reduction motor; 2818, third gear; 31, base frame; 32, U-shaped frame; 33, third T-shaped slide groove; 34, third T-shaped slide block; 35, base plate; 36, turntable; 37, air inlet jet fan; 38, second screw rod; 39, second threaded sleeve; 310, rotating rod; 311, active bevel gear; 312, short shaft; 313, driven bevel gear; 314, eighth servo reduction motor; 315, ninth servo reduction motor; 316, fourth gear; 317, second gear ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0031] See also Figure 1-6 The present invention provides a technical solution: a highway tunnel fire ventilation and smoke exhaust test system, comprising a simulated tunnel component 1, the simulated tunnel component 1 comprises a tunnel passage 11, the top surface of the tunnel passage 11 is fixedly connected to an arc-shaped top 12, one side of the tunnel passage 11 is fixedly connected to an escape passage 13, the other side of the tunnel passage 11 is fixedly connected to a transverse smoke exhaust passage 14, the top surface of the arc-shaped top 12 is fixedly connected to a longitudinal smoke exhaust passage 15, the side wall of the transverse smoke exhaust passage 14 is fixedly connected to and connected to a plurality of smoke exhaust axial flow fans 110, the top surface of the longitudinal smoke exhaust passage 15 is fixedly connected to and connected to a plurality of smoke exhaust axial flow fans Machine 110, a plurality of smoke exhaust mechanisms 16 are arranged on the side wall of the transverse smoke exhaust channel 14, a plurality of smoke exhaust mechanisms 16 are arranged on the bottom surface of the longitudinal smoke exhaust channel 15, a plurality of fire and smoke simulation mechanisms 2 are arranged in the tunnel channel 11, two tracks 18 are fixedly connected to the bottom surface of the tunnel channel 11 on both sides, an air intake simulation mechanism 3 is arranged at the end of the tunnel channel 11, the fire and smoke simulation mechanism 2 includes two side strips 21, four fire source devices 27, four smoke simulation components 28 and four heaters 29, and a plurality of escape doors 17 are arranged on the side of the tunnel channel 11 close to the escape channel 13;

[0032] The two side strips 21 are parallel to each other, the bottom ends of the two side strips 21 are fixedly connected to the bottom strip 22, the top ends of the two side strips 21 are fixedly connected to the arc strip 23, the bottom end of the bottom strip 22 is rotatably connected to a plurality of guide wheels 236, the guide wheels 236 roll and contact the track 18, the side strips 21 slide and contact the side wall of the tunnel passage 11, the side strips 21 away from the side wall of the tunnel passage 11 are provided with a first T-shaped groove 24, the first T-shaped slide 24 is vertically slidably connected to the first T-shaped slider 25, the side wall of the first T-shaped slider 25 is fixedly connected to the bearing plate 26, the top surface of the bottom strip 22 is provided with a second T-shaped groove 210, the second T-shaped slide 210 is horizontally slidably connected to the second T-shaped slider 211, the top surface of the second T-shaped slider 211 is fixedly connected to the support plate 212, the top of the support plate 212 is fixedly connected to the bearing plate 26, the bottom surface of the arc strip 23 is provided with An arc-shaped slide groove 213 is slidably connected to an arc-shaped slider 214, two vertical rods 215 are fixedly connected to the bottom sides of the arc-shaped slider 214, a supporting plate 26 is fixedly connected between the bottom ends of the two vertical rods 215, a fire source device 27 and a heater 29 are fixedly connected to the top surface of each supporting plate 26, a smoke simulation component 28 is arranged at the end of each supporting plate 26, a fire and smoke simulation mechanism 2 is adopted to simulate the ignition point of the fire, the fire and smoke simulation mechanism 2 can be moved and adjusted on the track 18, and the shell of the supporting plate 26 equipped with the fire source device 27, the smoke simulation component 28 and the heater 29 can be adjusted, so that the fire position can be conveniently simulated, and during the test process, the position of the supporting plate 26 can also be adjusted to simulate the situation of fire spreading in a real fire, which is more flexible and makes the test data closer to reality. Example 2

[0033] See also Figure 1-10 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The smoke simulation component 28 includes a heat-resistant chamber 281 and a side frame 282. The top surface of the heat-resistant chamber 281 is evenly rotated to connect multiple high-speed joints 283. The top of the high-speed joint 283 is located outside the heat-resistant chamber 281 and is fixedly sleeved on the bottom surface of the hinge seat 284. The top surface of the hinge seat 284 is rotatably connected to the rotating frame 285. The top of the rotating frame 285 is fixedly sleeved on the bottom end of the smoke exhaust cone port 286.

[0034] The bottom end of the smoke exhaust cone port 286 is fixedly connected to and communicated with the top end of the high-speed connector 283, a smoke screen applicator 2814 is fixedly connected inside the heat-resistant chamber 281, a circular plate 2815 is fixedly sleeved in the middle of the heat-resistant chamber 281, the circular plate 2815 is rotatably sleeved on the inner side of the side frame 282, and the side frame 282 is fixedly connected to the end of the supporting plate 26. The smoke exhaust cone port 286 of the smoke simulation component 28 can adjust the angle, and the heat-resistant chamber 281 can rotate, thereby adjusting the direction of the smoke exhaust cone port 286 to simulate different smoke outlet positions.

[0035] The air intake simulation mechanism 3 includes a base frame 31 and two air intake jet fans 37. The top surface of the base frame 31 is fixedly connected to two U-shaped frames 32. Two third T-shaped slide grooves 33 are provided on both sides of the U-shaped frames 32. Two third T-shaped sliders 34 are vertically slidably connected in each third T-shaped slide groove 33. The two third T-shaped sliders 34 in the two third T-shaped slide grooves 33 are fixedly connected to the bottom plate 35. The center of the top surface of the bottom plate 35 is rotatably connected to the turntable 36. The air intake jet fan 37 is fixedly connected to the top surface of the turntable 36. The air intake jet fan 37 is used to simulate the air intake. The position and orientation of the air intake jet fan 37 are adjustable to simulate different wind directions.

[0036] The smoke exhaust mechanism 16 includes a smoke exhaust port 161, which is fixedly connected to the side wall of the horizontal smoke exhaust channel 14 or the bottom surface of the longitudinal smoke exhaust channel 15. The smoke exhaust port 161 is connected to the tunnel channel 11. Four end side plates 162 are fixedly connected to the side of the end of the smoke exhaust port 161 away from the tunnel channel 11. A guide groove 163 is provided on the surface of the end side plate 162. A guide block 164 is slidably connected in the guide groove 163. A push plate 165 is fixedly connected to the surface of the guide block 164. A triangular windshield plate 166 is fixedly connected to the side of the push plate 165 close to the smoke exhaust port 161. The end surface of the end side plate 162 away from the smoke exhaust port 161 is fixedly connected to a cylinder 167. The output end of the cylinder 167 is fixedly connected to the center of the side wall of the push plate 165. The use of the triangular windshield plate 166 in the smoke exhaust mechanism 16 can change the smoke outlet diameter, and can also close the smoke exhaust port 161 of a certain smoke exhaust mechanism 16 to simulate different smoke exhaust conditions.

[0037] Two first synchronous pulleys 218 are rotatably connected at the positions above and below the first T-shaped slide groove 24 in the side strip 21, and the first synchronous belt 219 is sleeved on the two first synchronous pulleys 218. The first synchronous belt 219 is fixedly connected to the first T-shaped slider 25. The side wall at the bottom end of the side strip 21 is fixedly connected to the first servo reduction motor 220, and the rotating shaft end of the first servo reduction motor 220 is fixedly connected to the rotating shaft of the first synchronous pulley 218 located below, so as to realize the movement of the first T-shaped slider 25. The first screw rod 221 is horizontally rotatably connected in the second T-shaped slide groove 210, and the first threaded sleeve 222 is fixedly connected in the second T-shaped slider 211. The first screw rod 221 is threadedly connected to the first threaded sleeve 222, and the second servo reduction motor 223 is fixedly connected inside the end of the bottom strip 22, and the rotating shaft end of the second servo reduction motor 223 is fixedly connected to the first screw rod 221, so as to realize the movement of the second T-shaped slider 211.

[0038] The interior of the arc strip 23 is located above the arc slot 213 and is evenly rotated to connect multiple second gears 224. The top surface of the arc slider 214 is fixedly connected to an arc rack 228. The arc rack 228 is meshed and connected to multiple second gears 224 at any position. The shaft end of each second gear 224 is fixedly sleeved with two second synchronous pulleys 225. The second synchronous belt 226 is sleeved on the second synchronous pulleys 225 on two adjacent second gears 224. The center of the side wall of the arc strip 23 is fixedly connected to the third servo reduction motor 227. The shaft end of the third servo reduction motor 227 is fixedly connected to the shaft of one of the second gears 224. An arc guide rod 230 is fixedly connected in the arc slot 213. An arc guide hole 229 is provided on the arc slider 214. The arc guide hole 229 is slidably sleeved on the arc guide rod 230 to realize the movement of the arc slider 214.

[0039] The bottom surface of the bottom strip 22 is fixedly connected to the bottom bin 216, and the bottom surface of the end of the bottom bin 216 is rotatably connected to the first gear 217. The side wall of the track 18 is fixedly connected to the long rack 19, and the first gear 217 is meshedly connected to the long rack 19. The bottom surface of the bottom bin 216 is fixedly sleeved with the fourth servo reduction motor 231, and the shaft end of the fourth servo reduction motor 231 is fixedly connected to the driving pulley 232. The end of the bottom bin 216 is vertically rotatably connected to the rotating column 233, and the bottom end of the rotating column 233 is fixedly connected to the rotating shaft of the first gear 217. The driven pulley 234 is fixedly sleeved on the rotating column 233, and the fifth synchronous belt 235 is sleeved on the driving pulley 232 and the driven pulley 234, so as to realize the movement of the fire and smoke simulation mechanism 2 as a whole on the track 18.

[0040] The bottom end of each high-speed joint 283 is located inside the heat-resistant chamber 281 and fixedly connected to two third synchronous pulleys 2810. The third synchronous belts 2811 are sleeved on the third synchronous pulleys 2810 on the two adjacent high-speed joints 283. The sixth servo reduction motor 289 is fixedly connected inside one end of the heat-resistant chamber 281. The shaft end of the sixth servo reduction motor 289 is fixedly connected to the fourth synchronous pulley 2812. The fourth synchronous pulley 2812 is connected to the third synchronous pulley 281 on the high-speed joint 283 at the end. 0, the fourth synchronous belt 2813 is sleeved on the side frame 282, the fifth servo reduction motor 287 is fixedly connected to the side wall of the hinge seat 284, the shaft end of the fifth servo reduction motor 287 is fixedly connected to the shaft of the rotating frame 285, the side wall of the side frame 282 is fixedly connected to the seventh servo reduction motor 2817, the shaft end of the seventh servo reduction motor 2817 is located inside the side frame 282 and is fixedly connected to the third gear 2818, the circumferential side of the circular plate 2815 is fixedly sleeved with the first gear ring 2816, and the third gear 2818 is meshed and connected to the first gear ring 2816.

[0041] The two third T-shaped slide grooves 33 are vertically connected to the two second screw rods 38, the third T-shaped slider 34 is fixedly connected to the second threaded sleeve 39, the second screw rod 38 is threadedly connected to the second threaded sleeve 39, the bottom end of the U-shaped frame 32 is horizontally connected to the rotating rod 310, the two ends of the rotating rod 310 are fixedly sleeved with two active bevel gears 311, the bottom ends of the two second screw rods 38 are fixedly connected to two short shafts 312, the bottom ends of the short shafts 312 are fixedly connected to the driven bevel gear 313, and the active bevel gear 311 is meshed and connected to the driven bevel gear Bevel gear 313, the side wall of the bottom end of the U-shaped frame 32 is fixedly connected to the eighth servo reduction motor 314, the shaft end of the eighth servo reduction motor 314 is fixedly connected to the end of the rotating rod 310, the bottom surface of the end of the bottom plate 35 is fixedly connected to the ninth servo reduction motor 315, the shaft end of the ninth servo reduction motor 315 is located inside the bottom plate 35 and is fixedly connected to the fourth gear 316, the peripheral side of the turntable 36 is fixedly connected to the second gear ring 317, the fourth gear 316 is meshedly connected to the second gear ring 317, so as to realize the wind direction adjustment of the air inlet jet fan 37. Example 3

[0042] See also Figure 1-10 , which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When simulating, the present invention closes the smoke exhaust ports 161 of the smoke exhaust mechanism 16 at some positions according to the required smoke exhaust structure, and adjusts the smoke outlet diameters of the smoke exhaust ports 161 of the smoke exhaust mechanism 16 at other positions through the triangular wind shield 166. According to the air intake conditions of the fire to be simulated, the position and orientation of the air intake jet fan 37 in the air intake simulation mechanism 3 are adjusted. According to the position and number of the ignition points of the fire to be simulated, the position of the fire and smoke simulation mechanism 2 is adjusted, and the positions of the four bearing plates 26 in the fire and smoke simulation mechanism 2 are adjusted. The required fire source device 27, smoke simulation component 28 and heater 29 are started. The heater 29 is used to supplement heat so that the ignition point temperature curve is closer to the actual fire, and the smoke exhaust effect can be tested. The present invention A fire and smoke simulation mechanism 2 is used to simulate the ignition point of a fire. The fire and smoke simulation mechanism 2 can be moved and adjusted on the track 18, and the shell of the carrier plate 26 equipped with a fire source device 27, a smoke simulation component 28, and a heater 29 can be adjusted. This can conveniently simulate the fire position. The smoke exhaust cone 286 of the smoke simulation component 28 can adjust the angle, and the heat-resistant bin 281 can be rotated to adjust the direction of the smoke exhaust cone 286 to simulate different smoke outlet positions. During the test, the position of the carrier plate 26 can also be adjusted to simulate the spread of fire in a real fire, which is more flexible. The air intake simulation mechanism 3 simulates the air intake through the air intake jet fan 37. The position and direction of the air intake jet fan 37 are adjustable to simulate different wind directions, making the test simulation closer to reality and the test results more accurate.

[0043] 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 highway tunnel fire ventilation and smoke exhaust test system, comprising a simulated tunnel component (1), the simulated tunnel component (1) comprising a tunnel passage (11), the top surface of the tunnel passage (11) being fixedly connected to an arc-shaped top (12), one side of the tunnel passage (11) being fixedly connected to an escape passage (13), the other side of the tunnel passage (11) being fixedly connected to a transverse smoke exhaust passage (14), the top surface of the arc-shaped top (12) being fixedly connected to a longitudinal smoke exhaust passage (15), characterized in that: The side wall of the transverse smoke exhaust channel (14) is fixedly connected to and communicates with a plurality of smoke exhaust axial flow fans (110); the top surface of the longitudinal smoke exhaust channel (15) is fixedly connected to and communicates with a plurality of smoke exhaust axial flow fans (110); the side wall of the transverse smoke exhaust channel (14) is provided with a plurality of smoke exhaust mechanisms (16); the bottom surface of the longitudinal smoke exhaust channel (15) is provided with a plurality of smoke exhaust mechanisms (16); a plurality of fire and smoke simulation mechanisms (2) are provided in the tunnel channel (11); two tracks (18) are fixedly connected to two sides of the bottom surface of the tunnel channel (11); an air intake simulation mechanism (3) is provided at the end of the tunnel channel (11); the fire and smoke simulation mechanism (2) comprises two side strips (21), four fire source devices (27), four smoke simulation components (28) and four heaters (29); a plurality of escape doors (17) are provided on the side of the tunnel channel (11) close to the escape channel (13); The two side strips (21) are parallel to each other, the bottom ends of the two side strips (21) are fixedly connected to the bottom strip (22), the top ends of the two side strips (21) are fixedly connected to the arc strip (23), the bottom ends of the bottom strips (22) are rotatably connected to a plurality of guide wheels (236), the guide wheels (236) roll in contact with the track (18), the side strips (21) slide in contact with the side wall of the tunnel passage (11), a first T-shaped slide groove (24) is provided on the side of the side strips (21) away from the side wall of the tunnel passage (11), a first T-shaped slider (25) is vertically slidably connected in the first T-shaped slide groove (24), the side wall of the first T-shaped slider (25) is fixedly connected to the bearing plate (26), and a second T-shaped slide groove (23) is provided on the top surface of the bottom strip (22). 210), the second T-shaped slide groove (210) is horizontally slidably connected to the second T-shaped slider (211), the top surface of the second T-shaped slider (211) is fixedly connected to the support plate (212), the top of the support plate (212) is fixedly connected to the bearing plate (26), the bottom surface of the arc strip (23) is provided with an arc-shaped slide groove (213), the arc-shaped slide groove (213) is slidably connected to the arc-shaped slider (214), two vertical poles (215) are fixedly connected to the two sides of the bottom surface of the arc-shaped slider (214), the bearing plate (26) is fixedly connected between the bottom ends of the two vertical poles (215), the top surface of each bearing plate (26) is fixedly connected to the fire source device (27) and the heater (29), and the end of each bearing plate (26) is provided with a smoke simulation component (28); The smoke simulation component (28) comprises a heat-resistant chamber (281) and a side frame (282); the top surface of the heat-resistant chamber (281) is evenly rotatably connected to a plurality of high-speed joints (283); the top ends of the high-speed joints (283) are located outside the heat-resistant chamber (281) and are fixedly sleeved on the bottom surface of a hinge seat (284); the top surface of the hinge seat (284) is rotatably connected to a rotating frame (285); the top end of the rotating frame (285) is fixedly sleeved on the bottom end of a smoke exhaust cone (286); A metal corrugated hose (288) is fixedly connected and communicated between the bottom end of the smoke exhaust cone port (286) and the top end of the high-speed connector (283); a smoke screen applicator (2814) is fixedly connected inside the heat-resistant chamber (281); a circular plate (2815) is fixedly sleeved in the middle of the heat-resistant chamber (281); the circular plate (2815) is rotatably sleeved on the inner side of a side frame (282); and the side frame (282) is fixedly connected to the end of a bearing plate (26).

2. A highway tunnel fire ventilation and smoke exhaust test system according to claim 1, characterized in that: The air intake simulation mechanism (3) comprises a base frame (31) and two air intake jet fans (37); the top surface of the base frame (31) is fixedly connected to two U-shaped frames (32); two third T-shaped slide grooves (33) are provided on both sides of the U-shaped frames (32); two third T-shaped sliders (34) are vertically slidably connected in each of the third T-shaped slide grooves (33); the two third T-shaped sliders (34) in the two third T-shaped slide grooves (33) are fixedly connected to a bottom plate (35); the top center of the bottom plate (35) is rotatably connected to a turntable (36); and the air intake jet fans (37) are fixedly connected to the top surface of the turntable (36).

3. A highway tunnel fire ventilation and smoke exhaust test system according to claim 1, characterized in that: The smoke exhaust mechanism (16) comprises a smoke exhaust port (161), the smoke exhaust port (161) being fixedly connected to the side wall of the transverse smoke exhaust channel (14) or the bottom surface of the longitudinal smoke exhaust channel (15), the smoke exhaust port (161) being connected to the tunnel channel (11), four end side plates (162) being fixedly connected to the peripheral side of one end of the smoke exhaust port (161) away from the tunnel channel (11), a guide groove (163) being provided on the surface of the end side plate (162), a guide block (164) being slidably connected in the guide groove (163), a push plate (165) being fixedly connected to the surface of the guide block (164), a triangular wind shield plate (166) being fixedly connected to the side of the push plate (165) close to the smoke exhaust port (161), a cylinder (167) being fixedly connected to the surface of the end side plate (162) away from the smoke exhaust port (161), and an output end of the cylinder (167) being fixedly connected to the center of the side wall of the push plate (165).

4. A highway tunnel fire ventilation and smoke exhaust test system according to claim 1, characterized in that: The side strip (21) is rotatably connected to two first synchronous pulleys (218) located above and below the first T-shaped slide groove (24), the two first synchronous pulleys (218) are sleeved with a first synchronous belt (219), and the first synchronous belt (219) is fixedly connected to the first T-shaped slider (25); the side wall at the bottom end of the side strip (21) is fixedly connected to the first servo reduction motor (220), and the rotating shaft end of the first servo reduction motor (220) is fixedly connected to the rotating shaft of the first synchronous pulley (218) located below; the second T-shaped slide groove (210) is horizontally rotatably connected to the first screw rod (221), the second T-shaped slider (211) is fixedly connected to the first threaded sleeve (222), and the first screw rod (221) is threadedly connected to the first threaded sleeve (222); the end of the bottom strip (22) is fixedly connected to the second servo reduction motor (223), and the rotating shaft end of the second servo reduction motor (223) is fixedly connected to the first screw rod (221).

5. A highway tunnel fire ventilation and smoke exhaust test system according to claim 1, characterized in that: The arc strip plate (23) is located above the arc slide groove (213) and is evenly rotatably connected to a plurality of second gears (224). The top surface of the arc slide block (214) is fixedly connected to an arc rack (228). The arc rack (228) is meshedly connected to a plurality of second gears (224) at any position. The rotating shaft end of each second gear (224) is fixedly sleeved with two second synchronous pulleys (225). The second synchronous pulleys on two adjacent second gears (224) are The arc-shaped strip (23) is sleeved on the second synchronous belt (226), the side wall center of the arc-shaped strip (23) is fixedly connected to the third servo reduction motor (227), the shaft end of the third servo reduction motor (227) is fixedly connected to the shaft of one of the second gears (224), the arc-shaped guide rod (230) is fixedly connected in the arc-shaped slide groove (213), the arc-shaped slide block (214) is provided with an arc-shaped guide hole (229), and the arc-shaped guide hole (229) is slidably sleeved on the arc-shaped guide rod (230).

6. A highway tunnel fire ventilation and smoke exhaust test system according to claim 1, characterized in that: The bottom surface of the bottom strip plate (22) is fixedly connected to the bottom bin (216); the bottom surface of the end of the bottom bin (216) is rotatably connected to the first gear (217); the side wall of the track (18) is fixedly connected to the long rack (19); the first gear (217) is meshingly connected to the long rack (19); the bottom surface of the bottom bin (216) is fixedly sleeved to the fourth servo reduction motor (231); the shaft end of the fourth servo reduction motor (231) is fixedly connected to the driving pulley (232); the end of the bottom bin (216) is vertically rotatably connected to the rotating column (233); the bottom end of the rotating column (233) is fixedly connected to the rotating shaft of the first gear (217); the driven pulley (234) is fixedly sleeved on the rotating column (233); and the fifth synchronous belt (235) is sleeved on the driving pulley (232) and the driven pulley (234).

7. A highway tunnel fire ventilation and smoke exhaust test system according to claim 1, characterized in that: The bottom end of each high-speed joint (283) is located inside the heat-resistant chamber (281) and is fixedly connected to two third synchronous pulleys (2810); the third synchronous belts (2811) are sleeved on the third synchronous pulleys (2810) on two adjacent high-speed joints (283); a sixth servo reduction motor (289) is fixedly connected inside one end of the heat-resistant chamber (281); a fourth synchronous pulley (2812) is fixedly connected to the rotating shaft end of the sixth servo reduction motor (289); and the fourth synchronous pulley (2812) and the third synchronous pulley (2810) on the high-speed joint (283) located at the end are connected to each other. The fourth synchronous belt (2813) is sleeved, the side wall of the hinge seat (284) is fixedly connected to the fifth servo reduction motor (287), the shaft end of the fifth servo reduction motor (287) is fixedly connected to the shaft of the rotating frame (285), the side wall of the side frame (282) is fixedly connected to the seventh servo reduction motor (2817), the shaft end of the seventh servo reduction motor (2817) is located inside the side frame (282) and is fixedly connected to the third gear (2818), the circumferential side of the circular plate (2815) is fixedly sleeved to the first gear ring (2816), and the third gear (2818) is meshedly connected to the first gear ring (2816).

8. A highway tunnel fire ventilation and smoke exhaust test system according to claim 2, characterized in that: The two third T-shaped slide grooves (33) are vertically rotatably connected to a total of two second screw rods (38); the third T-shaped slide block (34) is fixedly connected to a second threaded sleeve (39); the second screw rod (38) is threadedly connected to the second threaded sleeve (39); the bottom end of the U-shaped frame (32) is internally horizontally rotatably connected to a rotating rod (310); two ends of the rotating rod (310) are fixedly sleeved with two active bevel gears (311); the bottom ends of the two second screw rods (38) are fixedly connected to two short shafts (312); the bottom ends of the short shafts (312) are fixedly connected to a driven bevel gear (313); the active bevel gear (311) is meshingly connected to a driven bevel gear (313); the side wall of the bottom end of the U-shaped frame (32) is fixedly connected to an eighth servo reduction motor (314); the rotating shaft end of the eighth servo reduction motor (314) is fixedly connected to the end of the rotating rod (310); the bottom surface of the end of the bottom plate (35) is fixedly connected to a ninth servo reduction motor (315); the rotating shaft end of the ninth servo reduction motor (315) is located inside the bottom plate (35) and is fixedly connected to a fourth gear (316); the circumferential side of the turntable (36) is fixedly connected to a second gear ring (317); and the fourth gear (316) is meshingly connected to the second gear ring (317).

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