Variable-pressure reduced-size subway tunnel / train compartment double-long-narrow-space fire experiment platform

Abstract

The invention relates to the technical field of subway tunnel fire experiment, and discloses a variable-pressure reduced-size subway tunnel / train compartment double-long-narrow-space fire experiment platform which comprises a tunnel body, a ventilation unit, a monitoring unit, a rail unit and a train unit, and a fire source structure is arranged in the train unit. According to the variable-pressure reduced-size subway tunnel / train compartment double-long-narrow-space fire experiment platform, a fire source structure is arranged, when a fire experiment needs to be carried out, a top fan, two side fans and a main fan are started through a wireless receiver, the wind speed during high-speed running of a train is simulated, and then a remote control igniter is remotely and wirelessly connected; the top fan, the two side fans and the main fan are remotely turned off after a certain time, a real fire disaster is simulated, the fire source structure can simulate the effect that the fire source continuously burns the multiple carriages after a train runs at a high speed, and the authenticity is high.

Description

Technical Field

[0001] The present invention relates to the technical field of subway tunnel fire experiments, in particular to a variable-pressure, reduced-size subway tunnel / train compartment double-narrow space fire experiment platform. Background Art

[0002] A subway fire refers to a fire incident that occurs in a subway train or subway station. A subway fire not only poses a threat to the safety of passengers and staff, but may also affect the normal operation of the subway. When a subway fire occurs and the train loses power, it forms an obstacle with a large blocking ratio in the tunnel space, and together with the tunnel, it forms a special double narrow space. In subway fires, the study of the smoke flow characteristics under different conditions after the fire is of great research value.

[0003] At present, a lot of research has been carried out in China on subway tunnel fires. The existing small-scale multifunctional subway tunnel fire test platform mainly studies the combustion and smoke flow after the fire. However, the existing test platform has low simulation accuracy in the control of the fire source structure and can only ignite in a fixed single carriage. Moreover, there is no fire extinguishing structure after the simulation, which poses a certain risk after the experiment. Therefore, a variable pressure, scaled-down subway tunnel / train carriage dual narrow space fire test platform is proposed, which can simulate the effect of a fire source burning multiple carriages continuously after a train is running at high speed. It has high authenticity and can quickly spray the carriages after the experiment is completed, extinguishing the fire quickly and facilitating reuse. Summary of the Invention

[0004] (1) Technical problems solved In response to the shortcomings of the existing technology, the present invention provides a variable-pressure, scaled-down subway tunnel / train car double-narrow space fire test platform, which can simulate the effect of a fire source continuously burning multiple cars after a train is running at high speed, with high authenticity. It can also quickly spray the cars after the experiment is completed, extinguish the fire quickly, and is easy to reuse. It solves the problem that the existing test platform has low realistic simulation of fire source structure control, can only ignite in a fixed single car, and has no fire extinguishing structure after simulation, which poses certain risks after the experiment.

[0005] (2) Technical solution In order to achieve the above-mentioned purpose of being able to simulate the fire source continuously burning multiple carriages after the train is running at high speed, with high authenticity, and being able to quickly spray the carriages after the experiment is completed, extinguish the fire quickly, and facilitate reuse, the present invention provides the following technical solutions: a variable pressure, reduced-size subway tunnel / train carriage double narrow space fire test platform, including a tunnel body, a ventilation unit, a monitoring unit, a track unit and a train unit, and a fire source structure is arranged inside the train unit.

[0006] The experimental platform is a scaled-down model with a similarity ratio of 1:3 to the actual size.

[0007] The tunnel body is located on the ground and is composed of multiple identical sub-tunnels, including a metal frame, a top plate, fixed plates on both sides, and two sealed doors in the front. By setting up the two sealed doors, you can enter the tunnel body to place items.

[0008] The fire source structure includes a remote control igniter, a fuse, an oil bottle, a liquid level scale and a burning item. The remote control igniter is arranged inside the train unit, the fuse is fixedly connected to the outside of the remote control igniter, the oil bottle is fixedly connected to the outside of the fuse, and a liquid level scale is arranged on the outside of the oil bottle. The burning item is arranged inside the train unit, and the burning items are placed inside several sub-carriages in the train unit.

[0009] Preferably, a fire extinguishing structure is provided inside the tunnel body, and the fire extinguishing structure includes a water tank, a water pump, a diversion pipe, and a nozzle. A water tank is fixedly installed on the top of the tunnel body, a water pump is provided on the outside of the water tank, a diversion pipe is fixedly connected to the outside of the water pump, and a plurality of nozzles are provided on the outside of the diversion pipe. By providing a plurality of nozzles, water mist can be quickly sprayed on the interior of the tunnel body, and a fire can be quickly extinguished.

[0010] Preferably, the ventilation unit includes a variable frequency fan, a rectifier assembly, a side fan, a top fan, a main fan and a wireless receiver. The variable frequency fan is arranged inside the tunnel body, the rectifier assembly is arranged outside the variable frequency fan, the side fans, top fans and main fan are all located inside the train unit, and the wireless receiver is arranged outside the variable frequency fan.

[0011] Preferably, the monitoring unit includes a fire prevention camera, a temperature sensor, and an anemometer. The fire prevention camera, temperature sensor, and an anemometer are fixedly installed inside the tunnel body. There are several fire prevention cameras and temperature sensors. The smoke flow and smoke temperature at different positions can be observed through several fire prevention cameras and temperature sensors.

[0012] Preferably, the track unit includes a track body, an electric traction machine and a lifting ring. The electric traction machine and the track body are located on the ground. A lifting ring is fixedly installed on the outside of the electric traction machine. By setting the lifting ring, the electric traction machine can be connected to the car body.

[0013] Preferably, the train unit includes a carriage body, wheels and doors. The carriage body is arranged inside the tunnel body. The carriage body is connected by multiple sub-carriages, and the multiple sub-carriages are sealed and connected by fireproof glue. Wheels are provided at the bottom of the multiple sub-carriages, and doors are provided on the outside of the multiple sub-carriages. By arranging the wheels, the multiple sub-carriages can slide.

[0014] Preferably, the side fans, top fans and main fans are all high-power variable-frequency fans. By setting the side fans, top fans and main fans, the wind speed of a high-speed train can be simulated, making the fire burning more realistic.

[0015] Preferably, a connecting ring adapted to the lifting ring is provided on the outside of the carriage body, and by providing the connecting ring, the carriage body can be fixedly connected to the lifting ring.

[0016] Preferably, a wireless controller is provided in front of the tunnel body, and the wireless controller is wirelessly connected to the remote control igniter and the wireless receiver via electromagnetic waves.

[0017] (3) Beneficial effects Compared with the existing technology, the present invention provides a variable pressure, scaled-down subway tunnel / train compartment dual narrow space fire test platform, which has the following beneficial effects: 1. This variable-pressure, scaled-down subway tunnel / train car dual-narrow space fire test platform sets up a fire source structure. When a fire test is needed, the top fan, two side fans, and main fan are turned on through a wireless receiver to simulate the wind speed of a high-speed train. Then, a remote wireless connection is made to the remote igniter, causing the fuse and oil bottle to ignite and burn, causing the combustible items in multiple cars to burn. After a certain period of time, the top fan, two side fans, and main fan are remotely turned off to simulate a real fire. This fire source structure can simulate the effect of a fire source continuously burning multiple cars after the train is running at high speed, with a high degree of authenticity.

[0018] 2. This variable-pressure, scaled-down subway tunnel / train car dual-narrow space fire test platform is equipped with a fire extinguishing structure. After multiple cars burn, the electric traction machine slowly pulls the train to a stationary state, and then monitors various fire parameters through fire prevention cameras, temperature sensors and anemometers. After the detection is completed, the water pump is turned on to allow water to flow through the diversion pipe to the inside of the tunnel body, and then spray water mist through the nozzle to quickly extinguish the fire. This fire extinguishing structure can quickly spray the cars after the experiment is completed, extinguishing the fire quickly and facilitating reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the structure of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 Schematic diagram of the track unit of the present invention; Figure 5 This is a schematic diagram of a train unit of the present invention; Figure 6 This is the external structural diagram of the main ventilation fan of the present invention; Figure 7 It is a schematic diagram of the fire source structure of the present invention.

[0020] In the figure: 1. Tunnel body; 2. Ventilation unit; 201. Variable frequency fan; 202. Rectifier assembly; 203. Side fan; 204. Top fan; 205. Main fan; 206. Wireless receiver; 3. Monitoring unit; 301. Fire camera; 302. Temperature sensor; 303. Anemometer; 4. Track unit; 401. Track body; 402. Electric traction machine; 403. Lifting ring; 5. Train unit; 501. Carriage body; 502. Wheel; 503. Door; 6. Fire source structure; 601. Remote control igniter; 602. Fuse; 603. Oil bottle; 604. Liquid level scale; 605. Burning items; 7. Fire extinguishing structure; 701. Water tank; 702. Water pump; 703. Diverter pipe; 704. Nozzle; 8. Wireless controller. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-7 A variable pressure, reduced-size subway tunnel / train compartment double narrow space fire test platform includes a tunnel body 1, a ventilation unit 2, a monitoring unit 3, a track unit 4 and a train unit 5, and a fire source structure 6 is arranged inside the train unit 5.

[0023] The experimental platform is a scaled-down model with a similarity ratio of 1:3 to the actual size.

[0024] The tunnel body 1 is located on the ground and is composed of multiple identical sub-tunnels. It includes a metal frame, a top plate, fixed plates on both sides, and two sealed doors in the front. By setting up two sealed doors, people can enter the tunnel body 1 to place items. The dimensions of the tunnel unit 1 are 30m (length) 1.6m (width) × 1.6m (height). The width and height are both the maximum values of the cross-section, which is similar to the actual subway tunnel size at a ratio of 1:3, which can facilitate personnel to enter the tunnel layout, and the bottom is fixed to the ground with concrete.

[0025] The fire source structure 6 includes a remote control igniter 601, a fuse 602, an oil bottle 603, a liquid level scale 604 and a burning item 605. The remote control igniter 601 is arranged inside the train unit 5, the fuse 602 is fixedly connected to the outside of the remote control igniter 601, the oil bottle 603 is fixedly connected to the outside of the fuse 602, the liquid level scale 604 is arranged on the outside of the oil bottle 603, and the burning item 605 is arranged inside the train unit 5. The burning items 605 are placed inside several sub-carriages in the train unit 5. The burning items 605 can be placed according to the number required for the experiment. Gasoline is placed inside the oil bottle 603, and when the gasoline is ignited, it can ignite the burning item 605, thereby simulating fire.

[0026] In the case implementation, a fire extinguishing structure 7 is provided inside the tunnel body 1. The fire extinguishing structure 7 includes a water tank 701, a water pump 702, a diversion pipe 703, and a nozzle 704. The water tank 701 is fixedly installed on the top of the tunnel body 1. A water pump 702 is provided on the outside of the water tank 701. The outside of the water pump 702 is fixedly connected to the diversion pipe 703. Several nozzles 704 are provided on the outside of the diversion pipe 703. By providing several nozzles 704, water mist can be quickly sprayed on the interior of the tunnel body 1, and the fire can be quickly extinguished.

[0027] In the case implementation, the ventilation unit 2 includes a variable frequency fan 201, a rectifier assembly 202, a side fan 203, a top fan 204, a main fan 205 and a wireless receiver 206. The variable frequency fan 201 is arranged inside the tunnel body 1, and the rectifier assembly 202 is arranged outside the variable frequency fan 201. The side fans 203, the top fan 204 and the main fan 205 are all located inside the train unit 5. The wireless receiver 206 is arranged outside the variable frequency fan 201. By setting the variable frequency fan 201 and the rectifier assembly 202, the normal and tangential velocities of the airflow can be adjusted. The rectifier assembly 202 includes a rectifier tube, a damping net and a nested rectifier.

[0028] In the case implementation, the monitoring unit 3 includes a fire prevention camera 301, a temperature sensor 302, and an anemometer 303. The fire prevention camera 301, the temperature sensor 302, and the anemometer 303 are fixedly installed inside the tunnel body 1. There are several fire prevention cameras 301 and temperature sensors 302. Through several fire prevention cameras 301 and temperature sensors 302, the smoke flow and smoke temperature at different positions can be observed. By setting the anemometer 303, the wind speed can be monitored at all times and the generated parameters can be transmitted to the wireless controller 8.

[0029] In the case implementation, the track unit 4 includes a track body 401, an electric traction machine 402 and a lifting ring 403. The electric traction machine 402 and the track body 401 are located on the ground. The lifting ring 403 is fixedly installed on the outside of the electric traction machine 402. By setting the lifting ring 403, the electric traction machine 402 can be connected to the car body 501, so that the electric traction machine 402 pulls the car body 501 to move horizontally, and the track body 401 is adapted to the wheel 502.

[0030] In the case implementation, the train unit 5 includes a carriage body 501, wheels 502 and doors 503. The carriage body 501 is arranged inside the tunnel body 1. The carriage body 501 is connected by multiple sub-carriages, and the multiple sub-carriages are sealed and connected by fireproof glue. Wheels 502 are arranged on the bottom of the multiple sub-carriages, and doors 503 are opened on the outside of the multiple sub-carriages. By arranging the wheels 502, the multiple sub-carriages can slide.

[0031] In the case implementation, the side fans 203, top fans 204 and main fans 205 are all high-power variable-frequency fans. By setting the side fans 203, top fans 204 and main fans 205, the wind speed of the high-speed train can be simulated, making the fire burning more realistic. It is not a single carriage ignited, and the smoke effect produced is not very effective for reference.

[0032] In the case implementation, a connecting ring that is compatible with the lifting ring 403 is provided on the outside of the carriage body 501. By providing the connecting ring, the carriage body 501 can be fixedly connected to the lifting ring 403.

[0033] In the case implementation, a wireless controller 8 is provided in front of the tunnel body 1. The wireless controller 8 is wirelessly connected to the remote control igniter 601 and the wireless receiver 206 via electromagnetic waves. The other components in this patent are electrically connected to the wireless controller 8 via wires, so that all electronic components in this patent can be controlled by operating the wireless controller 8.

[0034] During implementation, follow these steps: 1) When a fire experiment is required, the top fan 204, two side fans 203, and the main fan 205 are turned on through the wireless receiver 206 to simulate the wind speed of a high-speed train. Then, a remote wireless connection is made to the remote igniter 601 to ignite the fuse 602 and the oil bottle 603, causing the combustible items 605 in multiple carriages to burn. 2) After a certain period of time, the top fan 204, the two side fans 203 and the main fan 205 are remotely shut down to simulate a real fire; 3) After multiple carriages have burned, the electric traction machine 402 slowly pulls the train to a standstill, and then monitors various fire parameters through the fire prevention camera 301, temperature sensor 302, and anemometer 303; 4) After the final inspection is completed, the water pump 702 is turned on again to allow water to flow through the diversion pipe 703 to the interior of the tunnel body 1, and then spray water mist through the nozzle 704 to quickly extinguish the fire.

[0035] To sum up, the variable pressure reduced-size subway tunnel / train car double narrow space fire test platform, by setting up a fire source structure 6, when a fire experiment is needed, turns on the top fan 204, two side fans 203 and the main fan 205 through the wireless receiver 206 to simulate the wind speed when the train is running at high speed, and then remotely connects to the remote control igniter 601 wirelessly to make the fuse 602 and the oil bottle 603 ignite and burn, so that the combustible items 605 in multiple cars burn. After a certain period of time, the top fan 204, two side fans 203 and the main fan 205 are remotely turned off to simulate a real fire. The fire source structure 6 can simulate the effect of the fire source burning multiple cars continuously after the train is running at high speed, and is highly realistic.

[0036] In addition, the variable-pressure, reduced-size subway tunnel / train car dual-narrow space fire test platform is equipped with a fire extinguishing structure 7. After multiple cars burn, the electric traction machine 402 slowly pulls the train to a stationary state, and then monitors various fire parameters through the fire prevention camera 301, temperature sensor 302 and anemometer 303. After the detection is completed, the water pump 702 is turned on to allow water to flow through the diversion pipe 703 to reach the inside of the tunnel body 1, and then water mist is sprayed through the nozzle 704 to quickly extinguish the fire. The fire extinguishing structure 7 can quickly spray the car after the experiment is completed, extinguishing the fire quickly and facilitating reuse.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0038] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A variable pressure, reduced-size subway tunnel / train compartment double narrow space fire test platform, comprising a tunnel body (1), a ventilation unit (2), a monitoring unit (3), a track unit (4) and a train unit (5), wherein a fire source structure (6) is provided inside the train unit (5): The experimental platform is a scaled-down model with a similarity ratio of 1:3 to the actual size; The fire source structure (6) comprises a remote-controlled igniter (601), a fuse (602), an oil bottle (603), a liquid level scale (604), and a burning article (605); the remote-controlled igniter (601) is arranged inside the train unit (5); the fuse (602) is fixedly connected to the outside of the remote-controlled igniter (601); the oil bottle (603) is fixedly connected to the outside of the fuse (602); the liquid level scale (604) is arranged on the outside of the oil bottle (603); and the burning article (605) is arranged inside the train unit (5).

2. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: A fire extinguishing structure (7) is provided inside the tunnel body (1), and the fire extinguishing structure (7) comprises a water tank (701), a water pump (702), a diversion pipe (703), and a nozzle (704). The water tank (701) is fixedly installed on the top of the tunnel body (1), a water pump (702) is provided outside the water tank (701), a diversion pipe (703) is fixedly connected to the outside of the water pump (702), and a plurality of nozzles (704) are provided outside the diversion pipe (703).

3. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: The ventilation unit (2) comprises a variable frequency fan (201), a rectifier assembly (202), a side fan (203), a top fan (204), a main fan (205) and a wireless receiver (206); the variable frequency fan (201) is arranged inside the tunnel body (1); the rectifier assembly (202) is arranged outside the variable frequency fan (201); the side fans (203), the top fan (204) and the main fan (205) are all located inside the train unit (5); and the wireless receiver (206) is arranged outside the variable frequency fan (201).

4. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: The monitoring unit (3) comprises a fire prevention camera (301), a temperature sensor (302), and an anemometer (303); the fire prevention camera (301), the temperature sensor (302), and the anemometer (303) are fixedly installed inside the tunnel body (1).

5. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: The track unit (4) comprises a track body (401), an electric traction machine (402) and a lifting ring (403); the electric traction machine (402) and the track body (401) are located on the ground; and the lifting ring (403) is fixedly installed on the outside of the electric traction machine (402).

6. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: The train unit (5) comprises a carriage body (501), wheels (502) and doors (503); the carriage body (501) is arranged inside the tunnel body (1); the carriage body (501) is connected by a plurality of sub-carriages, and the plurality of sub-carriages are sealed and connected by fireproof glue; wheels (502) are arranged on the bottoms of the plurality of sub-carriages, and doors (503) are opened on the outsides of the plurality of sub-carriages.

7. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: The side fans (203), top fans (204) and main fans (205) are all high-power variable-frequency fans.

8. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 1, characterized in that: A connecting ring adapted to the lifting ring (403) is provided on the outside of the carriage body (501).

9. The variable pressure, reduced-size subway tunnel / train compartment dual narrow space fire test platform according to claim 3, characterized in that: A wireless controller (8) is provided in front of the tunnel body (1), and the wireless controller (8) is wirelessly connected to the remote control igniter (601) and the wireless receiver (206) via electromagnetic waves.

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