CN112903324A - Large-section tunnel fire test platform adopting composite type key smoke discharge - Google Patents
Large-section tunnel fire test platform adopting composite type key smoke discharge Download PDFInfo
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- CN112903324A CN112903324A CN202110024227.XA CN202110024227A CN112903324A CN 112903324 A CN112903324 A CN 112903324A CN 202110024227 A CN202110024227 A CN 202110024227A CN 112903324 A CN112903324 A CN 112903324A
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- 239000000779 smoke Substances 0.000 title claims abstract description 123
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims description 8
- 238000009423 ventilation Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 7
- 238000003491 array Methods 0.000 claims description 6
- 239000002737 fuel gas Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a large-section tunnel fire test platform adopting combined type key smoke discharge, which comprises a tunnel model main body, a longitudinal ventilation smoke discharge system, a combined type key smoke discharge system, a fire source combustion simulation system and a measurement and recording system.
Description
Technical Field
The invention relates to the technical field of fire prevention and smoke exhaust of tunnels, in particular to a large-section tunnel fire test platform adopting composite key smoke exhaust.
Background
After a fire disaster occurs in the tunnel, due to the relatively closed space environment, smoke is difficult to discharge, and the smoke gathered in the tunnel can seriously threaten the life safety of trapped people. Therefore, the reasonable and effective ventilation and smoke exhaust system needs to be designed to timely exhaust smoke in the tunnel, which is of great significance for reducing casualties in the tunnel.
The key smoke exhaust system at the side part of the tunnel is an important form of a centralized smoke exhaust system, and is widely applied to the smoke exhaust system of the highway tunnel at present, particularly the centralized smoke exhaust system of the immersed tube tunnel. In the tunnel lateral centralized smoke exhaust system, the side wall smoke exhaust port and the smoke exhaust channel are usually only arranged on the one-way side wall of the tunnel, and the smoke exhaust effect is worse for the lane with the longer distance from the side wall smoke exhaust port in the large-section tunnel; especially, when a fire disaster happens to the lane at the outermost side, the side wall smoke outlet is directly adopted to directly discharge smoke, and the smoke discharge efficiency is difficult to meet the design requirement. In recent years, some tunnel projects avoid adverse effects of side-part key smoke discharge for improving smoke discharge efficiency, smoke in a tunnel is discharged in a mode of combining side-part key smoke discharge and a top smoke discharge system, namely a top smoke discharge channel is arranged in a surplus space at the top of a slow-speed channel, smoke is discharged from the top, and meanwhile, a side smoke discharge port is arranged on an adjacent lane and is connected with a top smoke discharge channel of the slow-speed channel, and side part smoke discharge is adopted.
Because the field test in the engineering is limited too much and the cost is high, the model test is a common research method, and the test of the fire key smoke exhaust system of the large-section tunnel is a blank in the field. It is urgently needed to provide a major smoke discharge test platform for a large-section tunnel fire disaster to obtain main parameters influencing evacuation rescue environment in fire scenes such as smoke temperature, flow velocity, pressure, visibility and the like in the smoke discharge mode, so that test data serve design and construction of actual engineering.
Disclosure of Invention
In view of the above, the invention provides a large-section tunnel fire experiment platform adopting composite key smoke discharge, fills the blank of the large-section tunnel fire experiment platform at the present stage, and is an experiment system with strong operability, convenience in judging the quality of smoke discharge performance, higher accuracy and higher reliability.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a large-section tunnel fire experiment platform adopting composite type key smoke exhaust comprises a tunnel model main body, a longitudinal ventilation smoke exhaust system, a composite type key smoke exhaust system, a fire source combustion simulation system and a measurement recording system;
the longitudinal ventilation and smoke exhaust system comprises a variable-frequency axial flow fan, and an air outlet of the variable-frequency axial flow fan is communicated with one end of the tunnel model main body;
the combined type key smoke exhaust system comprises a smoke exhaust pipeline, a smoke exhaust air shaft, a smoke exhaust fan and an electric smoke exhaust valve, wherein the smoke exhaust pipeline is arranged at the top of the tunnel model main body and extends along the length direction of the tunnel model main body;
the fire source combustion simulation system comprises an oil pan and a porous burner which are arranged in the tunnel model main body, and the measurement recording system comprises a wind speed detection device, a movable thermocouple tree and a thermocouple linear array which are arranged in the tunnel model main body; the oil pan, the porous burner, the wind speed detection device, the movable thermocouple tree and the thermocouple linear array are all connected with a computer.
Further, in the above technical solution, the tunnel model main body is formed by connecting a plurality of detachable semicircular cross-section chamber units, and the arc-shaped top surface of the chamber is made of a high temperature resistant transparent material; the bottom of the tunnel model main body is fixed on a plurality of test bed supports, and the control of the gradient of the tunnel model main body is realized by changing the height of the test bed supports.
Further, in the above technical solution, the cross-sectional area of the variable frequency axial flow fan is larger than the cross-sectional area of the tunnel model main body, the longitudinal ventilation and smoke evacuation system further includes a reducer and a rectifier pipe section, an air outlet of the variable frequency axial flow fan is communicated with one end of the rectifier pipe section through the reducer, and the other end of the rectifier pipe section is communicated with the tunnel model main body through a detachable interface.
Furthermore, in the above technical scheme, the smoke exhaust air shaft is provided with a plurality of smoke exhaust air shafts which are arranged at two ends of the smoke exhaust pipeline, and the electric smoke exhaust valves are arranged on the pipe wall of the smoke exhaust pipeline at equal intervals.
Further, in above-mentioned technical scheme, fire source burning analog system is still including setting up outside gas flowmeter, manometer, on-off control valve, fuel gas bomb and the gas supply line of tunnel model main part, the gas bomb pass through the gas supply line with the porous burner is connected, on-off control valve, manometer and gas flowmeter set up on the gas supply line.
Further, in the above technical solution, the wind speed detecting device is a mesh structure, and the wind speed detecting device is connected to the input end of the computer through a wind speed collecting instrument.
Further, in the technical scheme, the thermocouple linear arrays are longitudinally distributed along the top of the tunnel model main body and below the flue pipeline, the vertical spacing of the thermocouples in the movable thermocouple tree is not more than 10cm, and the spacing between adjacent thermocouples in the thermocouple linear arrays is not more than 25 cm.
Further, in the above technical solution, the output end of the movable thermocouple tree and the output end of the thermocouple linear array are both connected to the input end of the computer through a temperature acquisition instrument.
Further, in the above technical solution, the measurement recording system further includes a video recorder and a video recorder support for supporting the video recorder, and the video recorder is provided with a laser emitter.
Further, in the above technical scheme, a movable flue gas collection rod is further arranged in the tunnel model main body, and an output end of the movable flue gas collection rod is connected with an input end of the computer through a flue gas analyzer.
The invention has the beneficial effects that: the side key smoke exhaust system and the top smoke exhaust system are integrated and combined in the tunnel model main body and can be used for comparing smoke exhaust effects of various ventilation and smoke exhaust modes; through ventilation system, tunnel model main part and burning analog system of burning of the fire source for test platform is close to actual conditions, and the supporting measurement record system that is provided with, can obtain various parameters in the tunnel under the conflagration situation, and the data accuracy is high, the credibility is high, is favorable to actual engineering design, construction and operation.
Drawings
FIG. 1 is a schematic side view of a tunnel fire experiment platform according to the present invention;
FIG. 2 is a schematic structural diagram of a tunnel fire experiment platform according to the present invention;
FIG. 3 is a schematic view of a liquid fire source combustion simulation system according to the present invention;
FIG. 4 is a schematic view of a gas fire source combustion simulation system according to the present invention;
FIG. 5 is a schematic view of a wind speed measurement recording system according to the present invention;
FIG. 6 is a schematic view of a flue gas temperature measurement recording system according to the present invention;
fig. 7 is a schematic diagram of a video recording system of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, which are included to illustrate and explain the present invention and are not intended to limit the present invention.
As shown in fig. 1 to 7, a large-section tunnel fire experiment platform adopting combined type key smoke discharge comprises a tunnel model main body, a longitudinal ventilation smoke discharge system, a combined type key smoke discharge system, a fire source combustion simulation system and a measurement recording system, wherein the fire source combustion simulation system comprises a liquid fire source combustion simulation system and a gas fire source combustion simulation system, and the measurement recording system comprises a wind speed measurement recording system, a smoke temperature measurement recording system, a video recording system and a smoke component analysis system.
The tunnel model main part is fixed on a plurality of test bench supports 1, and in the concrete embodiment, test bench support 1 can be provided with 4, can be according to actual need, through the height of test bench support 1 adjustment tunnel model main part, and then change its slope.
The tunnel model main body is formed by connecting a plurality of detachable semicircular section cavity units, and the arc top surface of each cavity is made of high-temperature-resistant transparent toughened glass, so that the flow field characteristics of smoke movement can be conveniently observed in the test process, and the ventilation and smoke exhaust effects can be easily recorded; and the curved toughened glass window can be opened so as to facilitate the arrangement or replacement of some detecting instruments and equipment in the tunnel model main body. In a specific embodiment, the length of the tunnel model body is 40 m.
The longitudinal ventilation and smoke exhaust system is arranged outside the tunnel model main body and specifically comprises a variable-frequency axial flow fan 2, a reducing pipe 3 and a rectification pipe section 4, the cross-sectional area of the variable-frequency axial flow fan 2 is larger than that of the tunnel model main body, an air outlet of the variable-frequency axial flow fan 2 is connected with one end of the rectification pipe section 4 through the reducing pipe 3, and the other end of the rectification pipe section 4 is communicated with the tunnel model main body through a detachable interface. The variable-frequency axial flow fan 2 changes the air speed of an air outlet by changing the rotating speed of an impeller, and provides uniform and stable longitudinal ventilation for the tunnel model main body after rectification treatment of the reducing pipe 3 and the rectifying pipe section 4.
The combined type key smoke exhaust system comprises a smoke exhaust pipeline 5, a smoke exhaust air shaft 6, a smoke exhaust fan 7 and an electric smoke exhaust valve 8, wherein the smoke exhaust pipeline 5 is arranged at the top of the tunnel model main body and extends along the length direction of the tunnel model main body, one end of the smoke exhaust air shaft 6 is communicated with the smoke exhaust pipeline 5, and the other end of the smoke exhaust air shaft 6 extends out of the tunnel model main body, so that the smoke exhaust pipeline 5 is communicated with the outside of the tunnel model through the smoke exhaust air shaft 6; the smoke exhaust fan 7 is arranged in the smoke exhaust air shaft 6, and the electric smoke exhaust valves 8 are arranged on the pipe wall of the smoke exhaust pipeline 5, which is contacted with the inside of the tunnel model main body at equal intervals. In the embodiment, a slow-moving way area and a moving way area are arranged in a tunnel, the volume of the slow-moving way area and the moving way area is divided according to the tunnel ratio in the actual engineering, a smoke exhaust pipeline 5 is specifically formed by a gap between a ceiling arranged at the upper part of the slow-moving way in a tunnel model main body and the top of the tunnel model main body, 4 smoke exhaust air shafts 6 are arranged and are respectively arranged at two ends of the smoke exhaust pipeline 5, and 4 smoke exhaust fans 4 are arranged; the electric smoke exhaust valves are respectively arranged at the smoke exhaust ports which are arranged on the left side and the bottom of the smoke exhaust pipeline 5 at equal intervals, and the electric control valves 8 can realize the automatic opening or closing of the electric control.
Liquid burning of fire source analog system is including setting up at the inside food tray 9 of tunnel model main part, and the information output end of this food tray 9 is connected with computer 10's input, and food tray 9 can its inslot of real-time measurement record liquid fuel quality and feed back it to computer 10, and then utilize computer 10 real-time observation record liquid burning of each item parameter's of fire source data change condition, through changing not unidimensional food tray and liquid fuel, realize the simulation burning under the different fire source power condition.
The gas fire source combustion simulation system comprises a porous burner 11 arranged in the tunnel model main body and a fuel gas storage cylinder 15 arranged outside the tunnel, wherein a gas outlet of the fuel gas storage cylinder 15 is connected with the porous burner 11 through a gas supply pipeline 16 and used for providing gas, so that the porous burner 11 can continuously burn, and a fire scene is better simulated; the gas supply pipeline 16 is provided with a gas flow valve 12, a pressure gauge 13 and a switch control valve 14, the switch control valve 14 is connected to the gas outlet of the fuel gas storage bottle 15, and the gas flow valve 12 and the pressure gauge 13 are connected to the gas supply pipeline 16 and used for detecting the gas flow; the signal output end of the porous burner 11 is connected with the input end of the computer 10, and the data change condition of various parameters of the gas fire source can be recorded by the computer 10.
The wind speed measuring and recording system is composed of a movable wind speed detecting device 17 arranged inside the tunnel model main body and a wind speed collecting instrument 18 arranged outside the tunnel model main body, the wind speed detecting device is connected with the wind speed collecting instrument 18 through guiding, and the wind speed collecting instrument 18 is connected with the input end of the computer 10 and used for transmitting collected signals to the computer 10; the movable wind speed detection device 17 is of a net-shaped structure, and can accurately measure the real-time change condition of the flue gas flow speed in the tunnel model main body.
The flue gas temperature measuring and recording system is composed of a movable thermocouple tree 19 and a thermocouple linear array 20 which are arranged inside a tunnel model main body, and a temperature acquisition instrument 21 which is arranged outside the tunnel model main body, wherein the thermocouple linear arrays 20 are longitudinally distributed along the top plate inside the tunnel model main body and the lower side of a smoke exhaust pipeline, the movable thermocouple tree 19 and the thermocouple linear arrays 20 are both connected with the input end of the temperature acquisition instrument 21, and the output end of the temperature acquisition instrument 21 is connected with the input end of the computer 10; the real-time measurement and recording of the vertical smoke temperature of the inner space of the tunnel model main body and the smoke temperature of the lower side of the smoke exhaust pipeline along the tunnel model top plate can be realized. In the embodiment, the temperature acquisition instrument 21 adopts a 7018 temperature acquisition module, the vertical spacing between thermocouples in the movable thermocouple trees 19 is generally not more than 10cm, and a plurality of movable thermocouple trees 19 can be arranged in the tunnel model main body; the distance between a thermocouple linear array 20 longitudinally distributed on the top plate in the tunnel model main body and the lower side of the smoke exhaust pipeline and the ceiling is 5cm, and the distance between two adjacent thermocouples in the thermocouple linear array 20 is not more than 25 cm.
The video recording system is arranged outside the tunnel model main body and positioned at a port, and comprises a video recorder 22, a video recorder support 23 and a laser emitter 24, wherein the video recorder 22 is placed on the video recorder support 23, and the laser emitter 24 is arranged below a lens of the video recorder 22; when the device is used, the laser emitter 24 emits sheet laser to the inside of the tunnel model main body so as to clearly display the flow field characteristics of smoke movement in the ventilation and smoke exhaust process, and the flow field characteristics are recorded in real time by the video recorder 22.
The flue gas composition analysis system comprises a movable flue gas collection rod arranged inside the tunnel model main body and a flue gas analyzer arranged outside the tunnel model main body, wherein the output end of the movable flue gas collection rod is connected with the input end of the flue gas analyzer, the output end of the flue gas analyzer is connected with the input end of the computer 10, and the computer 10 can be used for analyzing and recording flue gas composition data.
It can be understood that the smoke exhaust duct 5 and the bottom plate of the chamber unit are both made of fireproof plates, and corresponding sealing treatment should be performed at all gaps to prevent the tunnel model main body from leaking air and smoke.
It will be understood that no limitation of the present invention is intended thereby, and that all changes, equivalents and modifications in the above-described embodiments are intended to be embraced by the present invention.
Claims (10)
1. A large-section tunnel fire test platform adopting composite key smoke exhaust is characterized by comprising a tunnel model main body, a longitudinal ventilation smoke exhaust system, a composite key smoke exhaust system, a fire source combustion simulation system and a measurement recording system;
the longitudinal ventilation and smoke exhaust system comprises a variable-frequency axial flow fan (2), and an air outlet of the variable-frequency axial flow fan (2) is communicated with one end of the tunnel model main body;
the combined type key smoke exhaust system comprises a smoke exhaust pipeline (5), a smoke exhaust air shaft (6), a smoke exhaust fan (7) and an electric smoke exhaust valve (8), wherein the smoke exhaust pipeline (5) is arranged at the top of the tunnel model main body and extends along the length direction of the tunnel model main body, one end of the smoke exhaust air shaft (6) is communicated with the smoke exhaust pipeline (5), the other end of the smoke exhaust air shaft extends out of the tunnel model main body, the smoke exhaust fan (7) is arranged in the smoke exhaust air shaft (6), and the electric smoke exhaust valve (8) is arranged on the pipe wall of the smoke exhaust pipeline (5);
the fire source combustion simulation system comprises an oil pan (9) and/or a porous burner (11) arranged in the tunnel model main body, and the measurement recording system comprises a wind speed detection device (17), a movable thermocouple tree (19) and a thermocouple linear array (20) arranged in the tunnel model main body;
the oil pan (9), the porous burner (11), the wind speed detection device (17), the movable thermocouple tree (19) and the thermocouple linear array (20) are all connected with the computer (10).
2. The fire testing platform for the large-section tunnel according to claim 1, wherein the tunnel model body is formed by connecting a plurality of detachable semi-circular cross-section chamber units, and the arc-shaped top surface of each chamber is made of a high-temperature-resistant transparent material; the bottom of the tunnel model main body is fixed on a plurality of test bed supports (1).
3. The fire test platform for the large-section tunnel according to claim 1, wherein the cross-sectional area of the variable-frequency axial flow fan (2) is larger than that of the tunnel model body, the longitudinal ventilation and smoke exhaust system further comprises a reducer (3) and a rectifier pipe section (4), an air outlet of the variable-frequency axial flow fan (2) is communicated with one end of the rectifier pipe section (4) through the reducer (3), and the other end of the rectifier pipe section (4) is communicated with the tunnel model body through a detachable interface.
4. The fire test platform for the large-section tunnel according to claim 1, wherein a plurality of smoke exhaust air shafts (6) are arranged at two ends of the smoke exhaust pipeline (5), and the electric smoke exhaust valves (8) are arranged on the pipe wall of the smoke exhaust pipeline (5) at equal intervals.
5. The fire test platform for the large-section tunnel according to claim 1, wherein the fire source combustion simulation system further comprises a gas flow meter (12), a pressure gauge (13), an on-off control valve (14), a fuel gas cylinder (15) and a gas supply pipeline (16) which are arranged outside the tunnel model main body, the gas cylinder (15) is connected with the porous burner (11) through the gas supply pipeline (16), and the on-off control valve (14), the pressure gauge (13) and the gas flow meter (12) are arranged on the gas supply pipeline (16).
6. The fire testing platform for the large-section tunnel according to claim 1, wherein the wind speed detection device (17) is of a net structure, and an output end of the wind speed detection device (17) is connected with an input end of the computer (10) through a wind speed acquisition instrument (18).
7. The fire testing platform for the large-section tunnel according to claim 1, wherein the thermocouple linear arrays (20) are longitudinally distributed along the top of the tunnel model body and below the flue pipeline (5), the vertical spacing of the thermocouples in the movable thermocouple tree (19) is not more than 10cm, and the spacing between adjacent thermocouples in the thermocouple linear arrays (20) is not more than 25 cm.
8. The fire testing platform for the large-section tunnel according to claim 1, wherein the output end of the movable thermocouple tree (19) and the output end of the thermocouple linear array (20) are connected with the input end of the computer (10) through a temperature acquisition instrument (21).
9. The fire testing platform for the large-section tunnel according to claim 1, wherein the measurement recording system further comprises a video recorder (22) and a video recorder support (23) for supporting the video recorder (22), and the video recorder (22) is provided with a laser emitter (24).
10. The fire testing platform for the large-section tunnel according to claim 1, wherein a movable smoke collection rod is further arranged in the tunnel model main body, and an output end of the movable smoke collection rod is connected with an input end of the computer (10) through a smoke analyzer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446134A (en) * | 2022-01-26 | 2022-05-06 | 中铁第四勘察设计院集团有限公司 | Fire experiment platform for underwater V-shaped slope tunnel |
| AU2022211847B1 (en) * | 2021-12-30 | 2023-01-05 | Ccteg Shenyang Research Institute | Multifunctional roadway fire experiment platform, and method |
| CN117589498A (en) * | 2024-01-18 | 2024-02-23 | 应急管理部四川消防研究所 | Fireproof test device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106971666A (en) * | 2017-05-13 | 2017-07-21 | 中国科学技术大学 | A kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform |
| CN108956182A (en) * | 2018-08-01 | 2018-12-07 | 武汉科技大学 | Using the tunnel fire hazard experimental simulation device of the gradient adjustable of different fume exhausting types |
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2021
- 2021-01-08 CN CN202110024227.XA patent/CN112903324A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971666A (en) * | 2017-05-13 | 2017-07-21 | 中国科学技术大学 | A kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform |
| CN108956182A (en) * | 2018-08-01 | 2018-12-07 | 武汉科技大学 | Using the tunnel fire hazard experimental simulation device of the gradient adjustable of different fume exhausting types |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2022211847B1 (en) * | 2021-12-30 | 2023-01-05 | Ccteg Shenyang Research Institute | Multifunctional roadway fire experiment platform, and method |
| CN114446134A (en) * | 2022-01-26 | 2022-05-06 | 中铁第四勘察设计院集团有限公司 | Fire experiment platform for underwater V-shaped slope tunnel |
| CN117589498A (en) * | 2024-01-18 | 2024-02-23 | 应急管理部四川消防研究所 | Fireproof test device and method |
| CN117589498B (en) * | 2024-01-18 | 2024-04-19 | 应急管理部四川消防研究所 | Fireproof test device and method |
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Application publication date: 20210604 |