CN106228886B - A kind of fire test device based on Urban Underground pipe gallery - Google Patents
A kind of fire test device based on Urban Underground pipe gallery Download PDFInfo
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- CN106228886B CN106228886B CN201610563061.8A CN201610563061A CN106228886B CN 106228886 B CN106228886 B CN 106228886B CN 201610563061 A CN201610563061 A CN 201610563061A CN 106228886 B CN106228886 B CN 106228886B
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Abstract
The invention discloses a kind of fire test device based on Urban Underground pipe gallery, the pipe gallery model of setting is divided into left side piping lane and right side piping lane；Feedwater piping is provided with by support of pipelines on the ground of left side piping lane；Forceful electric power cable and light current cable are respectively arranged with by insulating carriage in left side piping lane two sides；Video camera and headlamp are installed at the top of the piping lane of left side；Gutter is equipped in the bottom of the left side piping lane；Gas pipeline is provided with by support of pipelines on the piping lane ground of right side；Video camera and headlamp are installed at the top of the piping lane of right side；On right side, the bottom of piping lane is equipped with gutter；Fire test device includes: transversal ventilation control system, simulation fire source system, fire detecting system, fine water mist fire-extinguishing system and water spray fire extinguishing system；Energy simcity underground pipe gallery fire test of the present invention, so as to provide scientific reference significance to underground pipe gallery smoke evacuation control and optimization, the fire spread of live wire cable, fire detection, fire extinguishing.
Description
Technical field
The present invention relates to Urban Underground pipe gallery fire safety evaluating fields, and in particular to a kind of Urban Underground pipe gallery fire
Calamity experimental provision.
Background technique
Urban Underground pipe gallery, be Urban Underground build a tunnel space, by electric power, communication, combustion gas, heat supply,
The various utilities pipelines such as plumbing are integrated in one, and are equipped with special access hole, hoisting port and monitor system, implementation unified planning,
Uniting, unified construction and management are the important infrastructure and " lifeline " for ensureing city operations.Urban Underground integrated pipe
Flue gas control, fire detection and the fire extinguishing control research of corridor have been extremely urgent things, study city by simulated experiment
Fire and smoke spread and control law in city's underground pipe gallery under fire conditions, for instructing Urban Underground pipe gallery fire cigarette
Effective selection of gas control, for ensureing that Urban Underground pipe gallery fire safety evaluating has important scientific meaning.
Particularity due to Urban Underground comprehensive pipe gallery structure compared to conventional tunnel, people are to this particular tunnel space
The sprawling of flue gas and control law shortage are understood in depth when fire occurs, and urgent need establishes the expansion research of related experiment platform, existing
Large scale tunnel fire hazard numbered analog simulation there is a certain error, and the Urban Underground for building tunneling boring or big cross section is comprehensive
It closes piping lane fire test platform and compares consuming financial resources and cost, while testing boundary condition and being also difficult to control accurately.Therefore,
The Urban Underground pipe gallery smoke simulation test platform of small size is in the research for being directed to Urban Underground pipe gallery fire
It is particularly important and is widely used in method.
Can be seen that existing conventional tunnel fire test device by the investigation and analysis to prior art cannot be in structure
Urban Underground pipe gallery is functionally represented, the research of Urban Underground pipe gallery fire combustion test is seldom related at present
And also yet there are no related special experiment research platform, scientific personnel also lack relevant understanding to this.If cannot rationally visit
It surveys, control fire, will cause very large resource waste.So needing to establish related fire smoldering test device, carry out Urban Underground
Pipe gallery combustion test, for instructing the prevention and treatment of Urban Underground pipe gallery fire that there is very important scientific meaning.
Summary of the invention
To solve the above-mentioned problems, a kind of fire test device based on Urban Underground pipe gallery is provided, to energy mould
Quasi- Urban Underground pipe gallery fire test, so as to climing to discharge fume control and optimization, live wire cable fire of underground pipe gallery
Prolong, fire detection, the scientific reference significance of fire extinguishing offer.
In order to achieve the above objectives, the technical scheme adopted by the invention is as follows:
A kind of the characteristics of fire test device based on Urban Underground pipe gallery model of the invention, is: the synthesis is arranged
Piping lane model is divided into left side piping lane and right side piping lane；Feed pipe is provided with by support of pipelines on the ground of the left side piping lane
Road；Forceful electric power cable and light current cable are respectively arranged with by insulating carriage in the two sides of the left side piping lane；In the left side
Video camera and headlamp are installed at the top of piping lane；Gutter is equipped in the bottom of the left side piping lane；
Gas pipeline is provided with by support of pipelines on the ground of the right side piping lane；At the top of the right side piping lane
Video camera and headlamp are installed；Gutter is equipped in the bottom of the right side piping lane；
The fire test device includes: transversal ventilation control system, simulation fire source system, fire detecting system, thin water
Mist fire extinguishing system and water spray fire extinguishing system；
The transversal ventilation control system includes: axial flow blower and honeycomb duct, and the entrance of the pipe gallery is arranged in
Place or exit；
The simulation fire source system includes: the circuit fire source simulation system of left side piping lane and the combustion gas that right side piping lane is arranged in
Pipeline fire source simulator；
The circuit fire source simulation system is to form bunch of cables simulation fire source, Yi Jili using forceful electric power cable and light current cable
The conducting wire fire spread device of variable-current is formed with electrified wire holder device；
The electrified wire holder device is to change current in wire with power supply, is used for researching DC electricity and alternating current conducting wire
Fire spread feature, comprising: base plate, fixed bakelite plate, mobile bakelite plate, sliding slot, fixing bolt, igniter, connects support frame
Line copper post, jack, the first electrified wire, the second electrified wire, third electrified wire, the 4th electrified wire and radiant heating panel；
Opposition is provided with support frame on the base plate；Opposition is provided with admittedly respectively on the medial surface of frame supported on both sides
Determine bakelite plate；Sliding slot is respectively set on the support frame below the fixed bakelite plate；Mobile electricity is provided on the sliding slot
Plank, and fixed with the fixing bolt；Several jacks are respectively arranged on the fixed bakelite plate and mobile bakelite plate,
The pair of wiring copper post is provided on several jacks；Wiring copper post on the fixed bakelite plate of two sides passes through described respectively
First electrified wire and the second electrified wire are connected；Wiring copper post is logical by the third respectively on the mobile bakelite plate of two sides
Electric lead and the 4th electrified wire are connected；
The top of support frame as described above is arranged in the radiant heating panel；And different external radiations are simulated by radiant heat flux
Under heat effect electrified wire light and Spread Characteristics；
The igniter is made of power supply and the heating wire being wrapped on electrified wire；
The gas pipeline fire source simulator is by the burning steel cylinder of natural gas, pressure gauge, the matter for controlling fuel flow rate
Amount flowmeter and gas pipeline spout are connected in sequence；And for simulating Longitudinal Wind effect pipe gallery ceiling hot-fluid point
Cloth；And the spray combustion characteristic of lower momentum master control jet stream fire is acted on for simulating Longitudinal Wind；
The gas pipeline spout is fixedly mounted on gas pipeline；And the burning steel is controlled by the mass flowmenter
The gas source size of bottle forms simulation fire source；
The fire detecting system includes: the left side temperature-sensing system of piping lane and the gas detection system of right side piping lane；
The temperature-sensing system includes: linear optical fiber heat detector, temperature signal processor and signal receiving device；
The top of the left side piping lane is arranged in the linear optical fiber heat detector, and collected temperature signal is passed
The temperature signal processor is passed, reaches early warning value for judging whether, if reaching early warning value, receives and fills to the signal
Set transmission alarm signal；
The gas detection system includes gas collecting hole, pump-line, pumping blower, gas signal processor and signal
Reception device；
The top of the right side piping lane is arranged in the pump-line, uniformly there is acquisition respectively on the pump-line
Hole；The gas detection system is to utilize the pumping blower from the sky extracted in the right side piping lane in the gas collecting hole
Gas and being transferred in the gas signal processor by the pump-line is analyzed and processed, and sees if fall out safety threshold
Value sends alarm signal to the signal receiving device if exceeding secure threshold；
The fine water mist fire-extinguishing system includes: water mist water supply line and sprinkling nozzle, and is arranged in the left side piping lane
The top of interior forceful electric power cable and light current cable；
The water spray fire extinguishing system includes: spray water supply line and water spray spray head, and is arranged in the right side piping lane
The top of interior gas pipeline.
The characteristics of fire test device of the present invention, lies also in:
The frame of the pipe gallery model is made using fireproof transparent material and steel plate, while being laid in ground surface
There is fire-proof plate.
The base plate and support frame of the electrified wire holder device are made using stainless steel material.
Compared with prior art, the beneficial effects of the present invention are embodied in:
1, in terms of experimental model scale, present invention experiment is current first comprehensive for underground according to 1:6 scale Design
The systems such as piping lane smoke evacuation control and optimization, the fire spread of live wire cable, fire detection, fire extinguishing control fire are closed to be studied in all directions
Pilot system.
2, in terms of Fire Ventilation simulated experiment, experimental system of the present invention can be comprehensive in underground with real simulation fire smoke
Sprawling process in piping lane.Simultaneously under such underground pipe gallery purging mode, fire cigarette has been effectively ensured using ventilating system
Gas control system.The present invention effectively serves smoke evacuation control in underground pipe gallery, fire using reasonable smoke evacuation technical measures
Detection is needed with fire extinguishing.
3, in terms of tunnel fire monitoring, the present invention uses line-type heat detector and gas fire detector, and sets
Set pipeline architecture different in piping lane (including feedwater piping, strong and weak cable and natural gas line)；So as to measure in piping lane just
The changing rule of temperature and gas componant etc. when reason condition and fire occur studies different pipelines in piping lane and forms fire to fire
The influence of fire detector is studied, and the changing rule of fire and fire extinguishing control fire behavior condition in different pipelines.
4, in terms of simulation fire source setting, the present invention uses gas fuel, is provided with special mass flow and pressure
Table can continuously adjust gas discharge, increase to the leakage of piping lane gas pipeline gas and the control of fire size, can distinguish
The fuel gas pipeline leakage and fire simulated under different situations occur.In off-test or there is intensity of a fire energy out of control under waiting fortuitous events
It is enough timely to shut down fire source, avoid the generation of accident；
5, in terms of electrified wire fire spread research, the present invention can change electrified wire using electrified wire holder device
Relative space position, for studying different spaces relative position electrified wire fire spread feature, and different spaces can be studied
Influence of the electrified wire fire to adjacent wire cable under position.Electrified wire holder device can be by changing radiant heating panel
Radiant heat flux, for simulate electrified wire under different external radiation heat effects light and Spread Characteristics.
Therefore, this imitative experimental appliance improves underground pipe gallery smoke evacuation control mode to China, and it is comprehensive to improve underground
Piping lane fire detection and fire fighting and rescue ability have great importance.Ventilation Control under underground pipe gallery fire condition, fire
Calamity detects experimental system, fire source simulation system, fire control and fire extinguishing system, suitable for underground pipe gallery fire control and goes out
Fire experiment.This research can provide the various fire conditions of reasonable simulation underground pipe gallery for underground pipe gallery, to comprehensive
It closes piping lane fire detecting system to optimize, proposes more reasonable, accurate fire detecting method；It works for ensureing in piping lane
Various pipelines have reference value in human life's safety and piping lane.
Detailed description of the invention
Fig. 1 is cross-sectional view of the invention；
Fig. 2 a is left vertical section top view of the invention；
Fig. 2 b is right vertical section top view of the invention；
Fig. 3 is detection device top view of the invention；
Fig. 4 is gas pipeline fire source simulator schematic diagram of the invention；
Fig. 5 is fire extinguishing of the invention and controls fiery simulator schematic diagram；
Fig. 6 a is water mists simulator schematic diagram of the invention；
Fig. 6 b is water spray simulator schematic diagram of the invention；
Fig. 7 is electrified wire holder device schematic diagram of the invention；
Fig. 8 is the partial enlarged view on the left of Fig. 7；
Fig. 9 is the partial enlarged view on the right side of Fig. 7.
Figure label: 1 left side piping lane；2 right side piping lanes；3 feedwater pipings；4 light current cables；5 forceful electric power cables；6 gas pipelines；
7 video cameras；8 headlamps；9 water spray water supply lines；10 water mist water supply lines；11 water mist spraying heads；12 water spray spray heads；13 drainings
Ditch；14 insulating carriages；15 supports of pipelines；16 axial flow blowers；17 honeycomb ducts；18 gas collecting holes；19 linear optical fiber temperature-sensitives are visited
Survey device；20 pump-lines；21 pumping blowers；22 gas signal processors；23 temperature signal processors；24 signal receiving devices；
25 acquisition computers；26 burning steel cylinders；27 pressure gauges；28 mass flowmenters；29 gas pipeline spouts；30 electrified wires branch is rack-mounted
It sets；31 base plates；32 support frames；32a fixed bakelite plate；32b moves bakelite plate；33 sliding slots；34 fixing bolts；35 igniting dresses
It sets；35a heating wire；36 wiring copper posts；37 jacks；38 radiant heating panels.
Specific embodiment
In the present embodiment, pipe gallery used by a kind of fire test device based on Urban Underground pipe gallery model
Model is model structure, and experimental model is manufactured according to the ratio of 1:6, is highly 0.5m, and the area of piping lane section is
0.52m2, simulate the long 10m of piping lane length: and being made using fireproof transparent material and steel plate, frame with a thickness of 0.05m,
The fire condition and fire control situation inside piping lane can be clearly observed in this way；Fire prevention is equipped in ground surface simultaneously
Plate, fire-proof plate is with a thickness of 0.04m, and fire-proof plate is for preventing damage of the experimental provision to experimental site；Specifically,
As shown in Figure 1, setting pipe gallery model is divided into left side piping lane 1 and right side piping lane 2,1 structure width of left side piping lane
0.4m, 2 structure width 0.6m of right side piping lane.Left and right sides Pipe rack is separated by by the fireproof transparent plate of material that width is 0.04m；
Feedwater piping 3 is provided with by support of pipelines 15 on the ground of left side piping lane 1；In left side, the two sides of piping lane 1 pass through insulation branch
Support 14 is respectively arranged with forceful electric power cable 5 and light current cable 4；In left side, the top of piping lane 1 is equipped with video camera 7 and headlamp 8；
In left side, the bottom of piping lane 1 is equipped with gutter 13；Wherein feedwater piping quantity is 1, pipe diameter 0.06m, and forceful electric power cable is exhausted
3, edge bracket, light current cable insulating support 5, number of cables is several on bracket, and video camera, headlamp and gutter are respectively arranged 1
It is a.
Gas pipeline 6 is provided with by support of pipelines 15 on the ground of right side piping lane 2；The top peace of piping lane 2 on right side
Equipped with video camera 7 and headlamp 8；On right side, the bottom of piping lane 2 is equipped with gutter 13；Wherein gas pipeline quantity is 2, pipeline
Diameter is 0.1m, and video camera, headlamp and gutter are respectively arranged 1.
Fire test device includes: that transversal ventilation control system, simulation fire source system, fire detecting system, water mists go out
Fiery system and water spray fire extinguishing system；
Fig. 2 a, 2b are the transversal ventilation control systems of fire test device comprising: axial flow blower 16 and honeycomb duct 17,
And the inlet or exit of pipe gallery are set；Axial flow blower 16 and honeycomb duct 17 form easy wind tunnel system, it is produced
Raw wind circulation is crossed one section close to blower and is reached inside piping lane by keriotheca structure composition honeycomb rectification section, and constant wind is formed
Speed.Wherein axial fan impeller diameter 500mm, revolving speed can reach 1450r/min, and maximum quantity of wind reaches 26000m3/h.
The axial flow blower time opening of transversal ventilation control system, can be used for ventilation under normal circumstances.Work as piping lane
When interior generation fire, temporary close ventilating system is needed, blocks the oxygen supply in piping lane, help controls fire condition, keeps away simultaneously
Exempt from fire spread.When the fire in piping lane is controlled and extinguished by fire extinguishing system, ventilating system can then operate again, quickly exclude
Toxic gas etc. in piping lane, and change to fresh air reaches safety standard to air quality, staff can safely into
Enter maintenance.
Simulation fire source system includes: the circuit fire source simulation system of left side piping lane 1 and the fuel gas conduit that right side piping lane 2 is arranged in
Road fire source simulator；
Circuit fire source simulation system is to form bunch of cables simulation fire source, simulated fire using forceful electric power cable 5 and light current cable 4
When generation, power of directly burning cable, the most really generation of reduction power cable fire most accurately test number to obtain
According to.And wire support device 30 is used the power on, the conducting wire fire spread device of variable-current is formed, for researching DC electricity and is handed over
Galvanic electricity conducting wire fire spread feature.
Fig. 4 is the gas pipeline fire source simulator of simulation fire source system, is by the burning steel cylinder 26 of natural gas, pressure
Table 27, the mass flowmenter 28 for controlling fuel flow rate and gas pipeline spout 29 are connected in sequence；
Gas pipeline spout 29 is fixedly mounted on gas pipeline 6；And burning steel cylinder 26 is controlled by mass flowmenter 28
Gas source size forms simulation fire source；Natural gas is flowed out by burning steel cylinder 26, by the combustion gas quality flowmeter demarcated in advance
28, into gas pipeline spout 29.Instant gas discharge can be checked by pressure gauge 27.It is sprayed when gas pipeline spout
Natural gas is not ignited, i.e. the leakage of analog gas pipeline.When ejection gas is ignited, i.e. analog gas leakage draws
The fire of hair.Gas pipeline fire source simulator can be used for simulating Longitudinal Wind effect pipe gallery ceiling heat flux distribution, and can be used
The spray combustion characteristic of lower momentum master control jet stream fire is acted in simulation Longitudinal Wind.
Fig. 3 is the fire detecting system in experimental provision comprising: the temperature-sensing system of left side piping lane 1 and right side pipe
The gas detection system of corridor 2；
Temperature-sensing system includes: linear optical fiber heat detector 19, temperature signal processor 23 and signal receiving device
24；
Linear optical fiber heat detector 19 is equipped with two, is arranged in above the strong and weak cable of piping lane two sides, distance
0.05m at the top of piping lane, apart from piping lane side wall 0.1m, fiber lengths are consistent with piping lane length；19 meeting of linear optical fiber heat detector
Temperature in piping lane is monitored at any time, and collected temperature signal is passed into temperature signal processor 23, is reached for judging whether
To early warning value, if reaching early warning value, alarm signal is sent to signal receiving device 24；Heat detector can also be real-time simultaneously
The temperature change in piping lane model is monitored, and data are recorded by signal receiving device.
Gas detection system include gas collecting hole 18, pump-line 20, pumping blower 21, gas signal processor 22 and
Signal receiving device 24；
The top of right side piping lane 2 is arranged in pump-line 20, and 20 length of pump-line is consistent with piping lane length, in exhaust tube
Uniformly there is acquisition hole 18 on road 20 respectively；Gas detection system is that right side is extracted from gas collecting hole 18 using pumping blower 21
Air in piping lane 2 and being transferred in gas signal processor 22 by pump-line 20 is analyzed and processed, and judges whether to surpass
Secure threshold out sends alarm signal to signal receiving device 24 if exceeding secure threshold；Signal processor passes through analysis gas
Methane and carbon dioxide content judge whether that gas leakage or fire occurs in body, when methane in gas or carbon dioxide content are super
Secure threshold out, feedback signal while opening the operating of ventilating system and fire extinguishing system to reception device to signal processor immediately.
Fig. 5 is the fine water mist fire-extinguishing system of experimental provision comprising: water mist water supply line 10 and sprinkling nozzle 11, and
The top of forceful electric power cable 5 and light current cable 4 in left side piping lane 1 is set；Water mist water supply line diameter is 0.03m；Water mists go out
Fiery system is supplied water by external water source is unified, is equipped with total valve, and when fire occurs, total valve is opened, and to system water supply, is gone out
Fire.
Fig. 6 is the water spray fire extinguishing system of experimental provision comprising: spray water supply line 9 and water spray spray head 12, and set
Set the top of the gas pipeline 6 in right side piping lane 2；Water spray water supply line diameter is 0.04m；Water spray fire extinguishing system is by external
Water source is unified to supply water, and is equipped with total valve, and when fire occurs, total valve is opened, and to system water supply, puts out a fire.
Fig. 5 is the fine water mist fire-extinguishing system and water spray fire extinguishing system floor plan of experimental provision.It include left side in figure
The water spray extinguishing spray head 11 of piping lane, and the water spray fire extinguishing sprayer 12 of right side piping lane.It is arranged in the left and right sides of piping lane
Piping lane for the fire extinguishing in piping lane and controls fire.The sprinkling nozzle of left side piping lane arranges 4 groups altogether, every group of 4 sprinkling nozzles,
Totally 16.4 groups of spray head spacing are 2.5m.Every two is a small group in every group of spray head, is separately mounted to above cable, is sprayed in group
Head spacing 0.05m, most two sides spray head is away from piping lane side wall 0.05m.The water spray spray head of right side piping lane arranges 5 groups altogether, every group of 4 water
Spray nozzle.Totally 20.5 groups of spray head spacing 2m, every 2 are a small group in every group of spray head, spray head spacing 0.1m in group, most two
Side spray head spacing piping lane side wall 0.1m.
As shown in Figure 7.Electrified wire holder device 30 is by base plate 31, support frame 32, fixed bakelite plate 32a, movement
Bakelite plate 32b, sliding slot 33, fixing bolt 34, igniter 35, wiring copper post 36, jack 37, electrified wire a, electrified wire b,
Electrified wire c, electrified wire d and radiant heating panel composition.
Opposition is provided with support frame 32 on base plate 31；Opposition is provided with respectively on the medial surface of frame 32 supported on both sides
Fixed bakelite plate 32a；Sliding slot 33 is respectively set on the support frame 32 below fixed bakelite plate 32a；It is provided on sliding slot 33
Mobile bakelite plate 32b；Several jacks 37 are respectively arranged on fixed bakelite plate 32a and mobile bakelite plate 32b, in several jacks
A butted line copper post 36 is provided on 37；Wiring copper post 36 on the fixed bakelite plate 32a of two sides is powered by first respectively to be led
Line a and the second electrified wire b are connected；Wiring copper post 36 passes through third electrified wire c respectively on the mobile bakelite plate 32b of two sides
It is connected with the 4th electrified wire d；The top of support frame 32 is arranged in radiant heating panel 38；
The base plate 31 and support frame 32 of electrified wire holder device are made using stainless steel material, and bakelite plate is exhausted
Edge material.Electrified wire holder device can be by the radiant heat flux of change radiant heating panel, for simulating different external radiations
Intensity act on lower electrified wire light and Spread Characteristics.
As shown in figure 8, electrified wire holder device can change the spatial position of electrified wire, changed by jack 37 logical
First electric lead a and the second electrified wire b horizontal space and third electrified wire c and the 4th electrified wire d horizontal space,
Change the vertical position of the electrified wire c and electrified wire d on mobile bakelite plate by sliding slot 33, and below mobile bakelite plate
It is fixed with 2 fixing bolts 34, for studying different spatial electrified wire fire spread feature.
As shown in figure 9, igniter 35 is made of power supply and the heating wire 35a being wrapped on electrified wire；It can lead to
The opening and closing that wireless switching remotely controls DC igniter is crossed, by heating heating wire come the electric wire cable that ignites.
More than, only a specific embodiment of the invention, but the scope of the present invention is not limited thereto, and can be readily occurred in
Minor change and change within that scope of the present invention.
Claims (1)
1. a kind of fire test device based on Urban Underground pipe gallery model, it is characterized in that: the pipe gallery mould is arranged
Type is divided into left side piping lane (1) and right side piping lane (2)；It is arranged on the ground of the left side piping lane (1) by support of pipelines (15)
There are feedwater piping (3)；Forceful electric power cable (5) are respectively arranged with by insulating carriage (14) in the two sides of the left side piping lane (1)
And light current cable (4)；Video camera (7) and headlamp (8) are installed at the top of the left side piping lane (1)；It is managed in the left side
The bottom of corridor (1) is equipped with gutter (13)；
Support of pipelines (15) are provided with gas pipeline (6) on the ground of the right side piping lane (2)；In the right side piping lane
(2) video camera (7) and headlamp (8) are installed at the top of；Gutter (13) are equipped in the bottom of the right side piping lane (2)；
The fire test device includes: that transversal ventilation control system, simulation fire source system, fire detecting system, water mists go out
Fiery system and water spray fire extinguishing system；
The transversal ventilation control system includes: axial flow blower (16) and honeycomb duct (17), and the pipe gallery is arranged in
Inlet or exit；The axial flow blower time opening of the transversal ventilation control system, is changed for ventilation under normal circumstances
Gas；When fire occurs in piping lane, temporary close transversal ventilation control system blocks the oxygen supply in piping lane；When in piping lane
Fire controlled and extinguished by fire extinguishing system, transversal ventilation control system can then operate again, exclude piping lane in toxic gas,
And change to fresh air；
The simulation fire source system include: left side piping lane (1) circuit fire source simulation system and setting right side piping lane (2) combustion
Feed channel fire source simulator；
The circuit fire source simulation system be using forceful electric power cable (5) and light current cable (4) formation bunch of cables simulation fire source, and
Use the power on the conducting wire fire spread device that wire support device (30) form variable-current；
The electrified wire holder device (30) is to change current in wire with power supply, is used for researching DC electricity and alternating current conducting wire
Fire spread feature, comprising: base plate (31), support frame (32), fixed bakelite plate (32a), mobile bakelite plate (32b), sliding slot
(33), fixing bolt (34), igniter (35), wiring copper post (36), jack (37), the first electrified wire (a), second are powered
Conducting wire (b), third electrified wire (c), the 4th electrified wire (d) and radiant heating panel (38)；
Opposition is provided with support frame (32) on the base plate (31)；It opposes respectively on the medial surface of frame supported on both sides (32)
It is provided with fixed bakelite plate (32a)；Sliding slot is respectively set on the support frame (32) below the fixed bakelite plate (32a)
(33)；It is provided on the sliding slot (33) mobile bakelite plate (32b), and fixed with the fixing bolt (34)；Described solid
Determine to be respectively arranged with several jacks (37) on bakelite plate (32a) and mobile bakelite plate (32b), be set on several jacks (37)
It is equipped with the pair of wiring copper post (36)；Wiring copper post (36) on the fixed bakelite plate (32a) of two sides passes through described the respectively
One electrified wire (a) is connected with the second electrified wire (b)；Wiring copper post (36) difference on the mobile bakelite plate (32b) of two sides
It is connected by the third electrified wire (c) with the 4th electrified wire (d)；Changed using electrified wire holder device (30) logical
The relative space position of electric lead for studying different spaces relative position electrified wire fire spread feature, and studies different skies
Between influence of the electrified wire fire to adjacent wire cable under position；
Top of radiant heating panel (38) setting in support frame as described above (32)；Electrified wire holder device (30) passes through change
The radiant heat flux of radiant heating panel (38), and simulate by radiant heat flux the point of electrified wire under different external radiation heat effects
Combustion and Spread Characteristics；
The igniter (35) is made of power supply and the heating wire (35a) being wrapped on electrified wire；
The base plate (31) and support frame (32) of the electrified wire holder device are made using stainless steel material；
The gas pipeline fire source simulator is by the burning steel cylinder (26) of natural gas, pressure gauge (27), control fuel flow rate
Mass flowmenter (28) and gas pipeline spout (29) be connected in sequence；And for simulating Longitudinal Wind effect pipe gallery
Ceiling heat flux distribution；And the spray combustion characteristic of lower momentum master control jet stream fire is acted on for simulating Longitudinal Wind；
The gas pipeline spout (29) is fixedly mounted on gas pipeline (6)；And institute is controlled by the mass flowmenter (28)
The gas source size of burning steel cylinder (26) is stated, simulation fire source is formed；When the natural gas that gas pipeline spout (29) spray is not ignited
When, i.e. the leakage of analog gas pipeline；When the natural gas of ejection is ignited, i.e., analog gas leakage cause fire；
The fire detecting system includes: the temperature-sensing system of left side piping lane (1) and the detection of gas system of right side piping lane (2)
System；
The temperature-sensing system includes: that linear optical fiber heat detector (19), temperature signal processor (23) and signal receive
Device (24)；
The linear optical fiber heat detector (19) is arranged at the top of the left side piping lane (1), and collected temperature is believed
Number the temperature signal processor (23) are passed to, reaches early warning value for judging whether, if reaching early warning value, to the letter
Number reception device (24) sends alarm signal；
The gas detection system includes gas collecting hole (18), pump-line (20), pumping blower (21), gas signal processing
Device (22) and signal receiving device (24)；
The pump-line (20) is arranged at the top of the right side piping lane (2), uniformly distinguishes on the pump-line (20)
There are acquisition hole (18)；The gas detection system is extracted from the gas collecting hole (18) using the pumping blower (21)
Air in the right side piping lane (2) and by the pump-line (20) be transferred in the gas signal processor (22) into
Row analysis processing, sees if fall out secure threshold, if exceeding secure threshold, sends and reports to the signal receiving device (24)
Alert signal；
The fine water mist fire-extinguishing system includes: water mist water supply line (10) and sprinkling nozzle (11), and is arranged in the left side
The top of the interior forceful electric power cable (5) of piping lane (1) and light current cable (4)；
The water spray fire extinguishing system includes: spray water supply line (9) and water spray spray head (12), and is arranged and manages on the right side
The top of corridor (2) interior gas pipeline (6)；
The frame of the pipe gallery model is made using fireproof transparent material and steel plate, while being equipped in ground surface anti-
Fiery plate.
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| CN201610563061.8A CN106228886B (en) | 2016-07-15 | 2016-07-15 | A kind of fire test device based on Urban Underground pipe gallery |
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| CN201610563061.8A CN106228886B (en) | 2016-07-15 | 2016-07-15 | A kind of fire test device based on Urban Underground pipe gallery |
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| CN106228886B true CN106228886B (en) | 2019-01-11 |
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