CN105749449B - A kind of tunnel fire system and extinguishing method - Google Patents
A kind of tunnel fire system and extinguishing method Download PDFInfo
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- CN105749449B CN105749449B CN201610202511.0A CN201610202511A CN105749449B CN 105749449 B CN105749449 B CN 105749449B CN 201610202511 A CN201610202511 A CN 201610202511A CN 105749449 B CN105749449 B CN 105749449B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0221—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires for tunnels
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
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Abstract
The present invention relates to a kind of tunnel fire system and extinguishing methods.When fire occurs in tunnel, press start button, or compressed-air foam big gun Automatic-searching starts automatically to fire area, or staff remotely starts compressed-air foam big gun, system controller starting compressed-air foam generation device simultaneously opens partitioning control valve, adjust automatically water flow simultaneously, foam solution and gas flow are also according to water flow adjust automatically, form compressed-air foam, Field Force holds case intracorporal foam gun alignment fire area and carries out fire extinguishing fighting, or compressed-air foam big gun is automatically aligned to fire area and carries out ejecting extinguishing, or staff's remote control compressed-air foam big gun alignment fire area carries out ejecting extinguishing；After fire extinguishing, system restores original state under normal circumstances.It solves the problems, such as that fire-fighting technique modes of fire suppression is single in existing tunnel, fire extinguishing effectiveness is low, is unfavorable for safety evacuation, ensure that system fire extinguishing high efficiency.
Description
Technical field
The invention belongs to the fixed fire-fighting technique fields of fire-fighting, more particularly, to a kind of tunnel fire system and extinguishing method.
Background technique
With the high speed development of the transport developments such as highway, railway, subway, major long tunnel is increasing.These major long tunnels
While offering convenience for communications and transportation, also to tunnel hazard prevention rescue, more stringent requirements are proposed.Especially for long flood
For the tunnel of bottom, once fire incident occurs, it not only will cause mass casualties, and tunnel structure can be destroyed, influence to hand over
Logical transport.For example, for length is more than the extra-long railway tunnel of 20km, once fire incident occurs in tunnel for train,
It only relies on residual power to be difficult to be driven out to tunnel, needs to carry out fire extinguishing fighting in tunnel.Therefore raw from protection path, support personnel
From the point of view of life and property safety, should be arranged in tunnel efficiently, reliable fixed fire-fighting equipment.
Currently, research both at home and abroad and the more tunnel fire technology of application are mainly high-pressure water mist fire-extinguishing technology, this goes out
Ignition technique mainly passes through cooling and starvation double action fire extinguishing, while water mists can also play blocking radiant heat, cooling
The effects of giving a dinner of welcome has the characteristics that water-saving, environmentally friendly.But high-pressure water mist fire-extinguishing technology is used to have the disadvantage that when tunnel
(1) water mists are mainly put out a fire by physical method, and water mists grain diameter is small, vulnerable to ventilation smoke exhaust in tunnel
Influence, be difficult to penetrate the fire plume of train fire, therefore practical fire extinguishing effectiveness when it is used for tunnel is not high；
(2) firing-fighting medium of common water mists is still water, and wetting and penetrating power are general, therefore for solid in tunnel
The extinguishing effect of body deepseated fire calamity is bad, can only play the role of inhibiting fire or control fire, and is difficult to stamp out a fire completely；
(3) water mists are sprayed in tunnel and easily upset the flue gas layer of tunnel top, cause high temperature poison gas full of entire
Tunnel greatly reduces visibility in tunnel, is unfavorable for escape and the safe escape of personnel.
Fixed compressed air foam extinguishing technology is a kind of novel foam extinguishing technology having gradually developed in recent years,
Fine and smooth with foaming structure, uniform, drainage time is long, and stability is high, the surface of protected object can be covered on for a long time, for A
Class fire, B class fire and the fire for mixing fiery feature with A, B class all have higher fire extinguishing effectiveness, and water consumption is small,
It is suitable for being used in the tunnel of water resources shortage, therefore fixed compressed air foam extinguishing technology has solution tunnel fire hazard and flutters
Rescue the advantage of technical problem.Existing compressed air foam extinguishing equipment be divided into mobile (such as fighting fires with compressed-air foam vehicle) and
Fixed two class, wherein structure is complicated for movable air compression foam truck, and fire brigade professional manipulation is needed to go out
Fire；Existing fixed compressed air foam fire-extinguishing apparatus is mainly deluge system, i.e., carries out subregion fire extinguishing by foam nozzle and protect
Shield, compressed air foam fire-extinguishing apparatus starts all spray heads in the latter subregion can all spray together, water flow and foam-like
State cannot change.Further, since the vehicle fires such as train, subway carriage occur mainly in interior, and the metal vehicle of vehicle
Cognition blocks foam, so that foam is difficult to apply to interior, therefore extinguishing effect of this deluge system for tunnel is bad.
Summary of the invention
It is an object of the invention to overcome the shortcomings of existing fire-fighting technique, and provide that a kind of fire extinguishing effectiveness is high, does not destroy tunnel
High-temperature flue gas layer, safe and reliable, the tunnel fire system of modes of fire suppression multiplicity and extinguishing method, the system both can be by fire in road
The fire extinguishing of calamity Field Force's manual manipulation can also position fire with automatic acquisition and targetedly be put out a fire, can also be led to
Cross artificial remote control fire extinguishing.
To achieve the above object, used specific technical solution is the present invention: a kind of tunnel fire system, including compression
Air foam generation device, system controller, compressed-air foam big gun, it is characterised in that: it further include compressed-air foam bolt housing,
The compressed-air foam generation device, system controller are arranged in the equipment cavern in tunnel, several compressed airs
Foam bolt housing, several compressed-air foam big guns are separately positioned on the two sidewalls in tunnel, several compressed-air foam bolt housings and
Several compressed-air foam big guns pass through foam line respectively and connect with compressed-air foam generation device, several compressed-air foams
Bolt housing and several compressed-air foam big guns pass through signal control line respectively and connect with system controller, and the compressed-air foam produces
Generating apparatus is connect by signal control line with system controller.
A kind of extinguishing method using tunnel fire system, it is characterised in that: steps are as follows,
A), under normal circumstances, system is in electriferous state, and air compressor is in operating status, to guarantee to buffer gas tank
With the gas for maintaining certain pressure in gas piping, fire pump is in standby with foam pump；
B), when fire occurs in tunnel, there are three types of system start-up mode is selective:
1. Field Force opens one or several compressed-air foam bolt housings nearby, press the starting of alarm control unit by
Button, alarm signal are sent automatically to system controller by signal control line, and system controller opens correspondence after receiving signal
The partitioning control valve of compressed-air foam bolt housing, and start contracting air foam generation device；
2. one or several compressed-air foam big guns using itself infrared flame detector or ultraviolet flame detector or
Digital picture fire detector automatic acquisition positions fire, and fire alarm signal is sent out automatically by signal control line
It is sent to system controller, system controller opens the partitioning control valve of corresponding compressed-air foam big gun after receiving signal, and opens
Dynamic contracting air foam generation device；
3. after tunnel remote monitoring center staff is connected to fire alarm, can remotely start and manipulate one or several
Compressed-air foam big gun, and start contracting air foam generation device；
C), the number of signals that system controller is fed back according to each compressed-air foam bolt housing or each compressed-air foam big gun,
Total water current amount needed for adjust automatically water flow to the compressed-air foam bolt housing and compressed-air foam big gun having been turned on, steeps simultaneously
Foam liquid and gas flow mix it according to preset foam solution mixing ratio and gas liquid ratio also according to water flow adjust automatically
It closes, forms compressed-air foam, and compressed-air foam bolt housing or compressed-air foam big gun are delivered to by foam line；
D), there are three types of modes of fire suppression is selective:
Compressed-air foam is sprayed 1. holding the intracorporal foam gun of case by Field Force and being directed at fire area, has carried out needle
It saves to the fire extinguishing of property；
2. automatically tracking alignment fire area by compressed-air foam big gun sprays compressed-air foam, put out a fire；
3. being directed at fire area by staff's remote control compressed-air foam big gun sprays compressed-air foam, carry out
Fire extinguishing；
E), after fire extinguishing, Field Force presses the stop button of compressed-air foam bolt housing alarm control unit, to
System controller sends stop signal or the detection of compressed-air foam big gun stops less than fire from the transmission of trend system controller
Stop signal or staff remotely stop each compressed-air foam big gun, send stop signal, system control to system controller
The number of signals that device processed is fed back according to each compressed-air foam bolt housing and compressed-air foam big gun, adjusts water flow, foam in time
Solution mixing ratio and gas liquid ratio, when all alarm control units and compressed-air foam big gun all stop, system controller is automatic
Compressed-air foam generation device is closed, the zonal control of compressed-air foam bolt housing and compressed-air foam big gun is simultaneously closed off
Valve, system restore original state under normal circumstances.
Advantages and advantages of the invention are:
1, the extinguishing method that the present invention is combined using compressed-air foam bolt housing with compressed-air foam big gun, being capable of basis
Practical fire condition in tunnel, selects three kinds of modes of fire suppression, the security against fire of comprehensive coverage tunnel, that is, is grasped manually by Field Force
Make the fire extinguishing of compressed-air foam bolt housing, is perhaps remotely grasped by the homing vector fire extinguishing of compressed-air foam big gun or by staff
The fire extinguishing of pressure control contracting air-foam cannon, modes of fire suppression multiplicity, and disturbance tunnel top high-temperature flue gas layer will not be destroyed, it solves existing
Tunnel fire technology modes of fire suppression is single, fire extinguishing effectiveness is low, is unfavorable for the problem of safety evacuation.
2, the foam bolt housing according to used in the practical scene of a fire and the quantity of foam monitor of the invention automatically adjust water flow,
And automatic and accurate control foam solution mixing ratio and gas liquid ratio is protected to make that the compressed-air foam generated is in stable condition, performance is good
System fire extinguishing high efficiency is demonstrate,proved.
3, the present invention both can be used for newly-built tunnel using having many advantages, such as that easy to operate, safe and reliable, fire extinguishing effectiveness is high
Road can also use in built tunnel.
4, the compressed-air foam drainage time that the present invention generates is long, stability is high, and can all keep under different water flows
Stable foam state can effectively put out train A class fire, B class fire and A, B class mixing fire, be particularly suitable in speciality
The rescue station application that length in railway tunnel is 450m~600m.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention；
Fig. 2 is the structural schematic diagram of compressed-air foam generation device of the present invention；
Fig. 3 is the structural schematic diagram of single foam gun compressed-air foam bolt housing of the invention；
Fig. 4 is the structure principle chart of double foam gun compressed-air foam bolt housings of the invention；
Fig. 5 is that there are two the system structure diagrams of compressed-air foam big gun for present invention installation.
Specific embodiment
The present invention is further illustrated below with reference to embodiment and its attached drawing.
As shown in Figure 1, a kind of tunnel fire system, including compressed-air foam generation device 1, system controller 2, compression
Air-foam cannon 6 further includes compressed-air foam bolt housing 5.
Compressed-air foam generation device 1, system controller 2 are arranged in the equipment cavern in tunnel, by several pressures
Contracting air foam bolt housing 5 according to identical spacing alternately is fixedly mounted on the two sidewalls in tunnel, i.e., in the tunnel wall of side according to
Identical spacing lays several compressed-air foam bolt housings 5, between every two compressed-air foam bolt housing 5 corresponding to middle position
The other side tunnel wall on lay a compressed-air foam bolt housing 5, the adjacent compressed-air foam bolt housing 5 of two of the same side
The distance between be 30m~60m, each compressed-air foam bolt housing 5 is away from ground 0.5m~1.5m.
One compressed-air foam big gun 6, compressed-air foam big gun 6 are installed in the top of each compressed-air foam bolt housing 5
Away from ground 3m~6m.
Several compressed-air foam bolt housings 5 and several compressed-air foam big guns 6 pass through foam line 3 and compressed air respectively
Foam-generating device 1 connects, and the compressed-air foam that compressed-air foam generation device 1 generates is delivered to respectively through foam line 3
A compressed-air foam bolt housing 5 and compressed-air foam big gun 6, several compressed-air foam bolt housings 5 and several compressed-air foams
Big gun 6 is connect by signal control line 4 with system controller 2 respectively, and compressed-air foam generation device 1 passes through signal control line 4
It is connect with system controller 2.
System controller 2 is connect by signal control line with tunnel remote monitoring center, and staff is connected to fire alarm
Afterwards, it can remotely start and manipulate each compressed-air foam big gun 6, carry out hand spray fire extinguishing.
As shown in Fig. 2, compressed-air foam generation device 1, including fire pump 1-4, concentrated tank 1-5, foam pump
1-8, air compressor 1-12, buffering gas tank 1-13, foam producer 1-17 further include water pot 1-1, I 1-2 of shut-off valve, filtering
I 1-3 of device, II 1-6 of shut-off valve, II 1-7 of filter, I 1-9 of check valve, Water flow adjusting valve 1-10, water ga(u)ge 1-11, gas
Flowmeter 1-14, gas flow regulating valve 1-15, II 1-16 of check valve, foam main pipe 1-18, the outlet water pot 1-1 successively leads to
Cross I 1-2 of shut-off valve, I 1-3 of filter is connect with the entrance of fire pump 1-4, the outlet the fire pump 1-4 passes through water flow
Regulating valve 1-10, water ga(u)ge 1-11 are connect with the flow inlet of foam producer 1-17, and the outlet concentrated tank 1-5 is successively
Pass through II 1-6 of shut-off valve, II 1-7 of filter, foam pump 1-8, check valve I 1-9 and Water flow adjusting valve 1-10 and water flow
The piping connection between 1-11 is counted, the outlet air compressor 1-12 passes sequentially through buffering gas tank 1-13, gas flowmeter 1-
14, gas flow regulating valve 1-15, II 1-16 of check valve are connect with the gas feed of foam producer 1-17；The system control
Device 2 is inputted with the flow control of the output signal end of gas flowmeter 1-14, foam pump 1-8 respectively by signal control line
End, the control signal of Water flow adjusting valve 1-10, the signal output end of water ga(u)ge 1-11, gas flow regulating valve 1-15
Control signal connection；The foam outlet of foam producer 1-17 is connected by foam main pipe 1-18 with foam line 3.
As shown in Figure 3, Figure 4, compressed-air foam bolt housing 5 includes single foam gun compressed-air foam bolt housing 5-1 and Shuan Pao
Foam rifle compressed-air foam bolt housing 5-2.
Single foam gun compressed-air foam bolt housing 5-1 includes that a set of compressed-air foam bolt is equipped in cabinet 5-11,
A set of compressed-air foam bolt include moveable hinge connector 5-12, foam branch pipe 5-13, alarm control unit 5-14, side arm 5-15,
Partitioning control valve 5-16, fire hose reel 5-17, fire hose 5-18, foam gun 5-19.
Fire hose reel 5-17 is fixed in cabinet 5-11 by side arm 5-15 and moveable hinge connector 5-12, fire hose
Reel 5-17 is equipped with fire hose 5-18, and one end of fire hose 5-18 connects foam gun 5-19, and fire hose 5-18's is another
One end is connected by partitioning control valve 5-16 with the outlet foam branch pipe 5-13 being fixed on cabinet 5-11, and foam branch pipe 5-13 enters
Mouth stretching cabinet 5-11 is outer to be connected to the foam line 3 of system, and alarm control unit 5-14 is fixed in cabinet 5-11, alarm control
The first signal output end of unit 5-14 processed is connect with partitioning control valve 5-16, and second signal output end passes through signal control line 4
It is connect with system controller 2.
As shown in figure 4, the composition of double foam gun compressed-air foam bolt housing 5-2, is to install two in a cabinet 5-11
Cover the identical compressed-air foam bolt of independent structure.It so not only can be to avoid bolt housing entire due to wherein a set of failure
Failure, the security reliability of safeguards system, and the foam flow of single foam gun can be reduced, it is allowed to be easier to manipulate.
Above-mentioned fire pump 1-4 uses fire-fighting centrifugal pump or variable frequency pump, and discharge pressure is 0.4~1.6Mpa.
As shown in figure 5, in the top of each compressed-air foam bolt housing 5, it is symmetrical centered on compressed-air foam bolt housing 5
Two compressed-air foam big guns 6 are installed, the distance between two compressed-air foam big guns 6 are that two adjacent compressions of the same side are empty
The half of distance between gas foam bolt housing 5, compressed-air foam big gun 6 are fixed in tunnel wall, away from ground 3m~6m.For example, working as
When the distance between the adjacent compressed-air foam bolt housing 5 of two of the same side d is 60m, then with some compressed-air foam bolt housing 5
Centered on the distance between two compressed-air foam big guns 6 being symmetrically installed be d/2=30m.
Above-mentioned foam pump 1-8 using gear pump or diaphragm pump or plunger pump or metering pump, foam hydraulic coupling is 0.4~
2.5Mpa。
Above-mentioned air compressor 1-12 uses screw air compressor or sliding-vane air compressor, supply gas pressure range
For 0.4~1.6Mpa.
Above-mentioned water ga(u)ge 1-11 is using liquid turbine flowmeter or electromagnetic flowmeter or vortex-shedding meter.
Above-mentioned gas flowmeter 1-14 uses vortex-shedding meter or turbine flowmeter.
Above-mentioned Water flow adjusting valve uses electric metering control valve, such as 381LSA type electric metering control valve.
Above-mentioned gas flow control valve uses electric metering control valve, such as 381LSB type electric metering control valve.
Above-mentioned partitioning control valve 5-16 uses electric control valve.
The length for the fire hose 5-18 that above-mentioned fire hose reel 5-17 is equipped with is 10m~40m.
Above-mentioned compressed-air foam big gun 6 uses the prior art, such as the compressed air in Patent No. 201510183844.9
Foam intelligent cannon or the homing vector big gun of compressed-air foam, its working principles are as follows: compressed-air foam big gun 6 is red using itself
Outer flame detector, ultraviolet flame detector and digital image fire detection device etc. incipient fire in tunnel is detected automatically and with
Track positioning, and alarm signal is sent automatically to system controller 2 by signal control line, its point is controlled by system controller 2
The opening and closing of area's control valve and the start and stop of compressed-air foam generation device 1.
In addition, each compressed-air foam big gun 6 and system controller 2 are connected by signal control line and tunnel remote monitoring center
It connects, after staff is connected to fire alarm, can remotely start and manipulate each compressed-air foam big gun 6, carry out hand spray and go out
Fire.
Above system controller 2 is using industrial mature PLC control technology, such as the CP1H type PLC of Omron Corp.
System controller 2 joins alarm signal, partitioning control valve, water flow, the gentle body flow of foam flow quantity etc. substantially
Number is programmed the alarm default, system controller 2 is fed back according to each compressed-air foam bolt housing 5 and compressed-air foam big gun 6
Number of signals automatically opens each compressed-air foam bolt housing 5 and the corresponding partitioning control valve of compressed-air foam big gun 6, starting pressure
Contracting air foam generation device 1, and the revolving speed of fire pump 1-4 or the aperture of Water flow adjusting valve 1-10 are automatically adjusted, it adjusts
Total water current amount needed for whole water flow to the compressed-air foam bolt housing 5 and compressed-air foam big gun 6 having been turned on；Meanwhile system
Controller 2 adjusts foam pump 1-8 revolving speed according to water flow situation of change in real time, adjust automatically foam flow quantity, be allowed to according to
Preset foam solution mixing ratio injects foam solution, and at the same time, system controller 2 is also adjusted according to water flow situation of change in real time
The aperture of throttle body flow control valve 1-15, adjust automatically gas flow are allowed to according to preset gas liquid ratio injecting compressed air,
Gas-liquid generates compressed-air foam after being sufficiently mixed, and is delivered to each compressed-air foam bolt housing 5 by foam line and compression is empty
Gas foam big gun 6 carries out ejecting extinguishing.
A kind of extinguishing method of tunnel fire system, steps are as follows:
A), under normal circumstances, system is in electriferous state, and air compressor 1-12 is in operating status, to guarantee to buffer
The gas of certain pressure is maintained in gas tank 1-13 and gas piping, fire pump 1-4 and foam pump 1-8 are in standby shape
State.
B), when fire occurs in tunnel, there are three types of system start-up mode is selective:
1. Field Force opens one or several compressed-air foam bolt housings 5 nearby, press alarm control unit 5-14's
Start button, alarm signal is sent automatically to system controller 2 by signal control line, after system controller 2 receives signal
The partitioning control valve 5-16 of corresponding compressed-air foam bolt housing 5 is opened, and starts contracting air foam generation device 1.
2. one or several compressed-air foam big guns 6 using itself infrared flame detector or ultraviolet flame detector or
Digital picture fire detector automatic acquisition positions fire, and fire alarm signal is sent out automatically by signal control line
It is sent to system controller 2, system controller 2 opens the partitioning control valve for corresponding to compressed-air foam big gun 6 after receiving signal, and
Start contracting air foam generation device 1.
3. after tunnel remote monitoring center staff is connected to fire alarm, can remotely start and manipulate one or several
Compressed-air foam big gun 6, and start contracting air foam generation device 1.
C), the signal number that system controller 2 is fed back according to each compressed-air foam bolt housing 5 or each compressed-air foam big gun 6
It measures, total water current amount needed for adjust automatically water flow to the compressed-air foam bolt housing 5 and compressed-air foam big gun 6 having been turned on,
Foam solution and gas flow make it according to preset foam solution mixing ratio and gas liquid ratio also according to water flow adjust automatically simultaneously
It is mixed, forms compressed-air foam, and compressed-air foam bolt housing 5 or compressed air bubble are delivered to by foam line 3
Foam big gun 6.
D), there are three types of modes of fire suppression is selective:
Compressed-air foam is sprayed 1. holding the foam gun 5-19 in cabinet 5-11 by Field Force and being directed at fire area,
Targetedly fire extinguishing is carried out to save.
2. automatically tracking alignment fire area by compressed-air foam big gun 6 sprays compressed-air foam, put out a fire.
3. being directed at fire area by staff's remote control compressed-air foam big gun 6 sprays compressed-air foam, into
Row fire extinguishing.
E), after fire extinguishing, Field Force press the stopping of 5 alarm control unit 5-14 of compressed-air foam bolt housing by
Button sends stop signal or the detection of compressed-air foam big gun 6 to system controller 2 and controls less than fire from trend system
Device 2 sends stop signal or staff remotely stops each compressed-air foam big gun 6, sends and stops to system controller 2
Signal, the number of signals that system controller 2 is fed back according to each compressed-air foam bolt housing 5 and compressed-air foam big gun 6, is adjusted in time
Whole water flow, foam solution mixing ratio and gas liquid ratio, when all alarm control unit 5-14 and compressed-air foam big gun 6 stop
When, compressed-air foam generation device 1 is automatically closed in system controller 2, simultaneously closes off compressed-air foam bolt housing 5 and compression is empty
The partitioning control valve of gas foam big gun 6, system restore original state under normal circumstances.
Above-described embodiment, the enabling signal quantity that compressed-air foam generation device 1 is fed back according to system controller 2, is adopted
Water flow is controlled with hierarchical pattern, i.e., system controller 2 is according to the 5 foam gun 5-19 of compressed-air foam bolt housing of starting and compression
The quantity of air-foam cannon 6, every basic parameter of adjust automatically compressed-air foam generation device 1, such as table 1,
Example 1, when starting two compressed-air foam bolt housings 5 in practical fire, system controller 2 is steeped according to compressed air
The number of signals that 5 alarm control unit 5-14 control button of foam bolt housing is fed back be 2 when, automatically by fluid flow adjust to
480L/min, while compressed-air foam is generated for foam solution and air according to 1% mixing ratio and 12:1 gas liquid ratio, and pass through bubble
Foam Pipeline transport is to compressed-air foam bolt housing 5, to meet the use demand of two compressed-air foam bolt housings 5.
Example 2, when starting eight compressed-air foam bolt housings 5 in practical fire, system controller 2 is steeped according to compressed air
The number of signals that 5 alarm control unit 5-4 control button of foam bolt housing is fed back be 8 when, automatically by fluid flow adjust to
1920L/min, while compressed-air foam is generated for foam solution and air according to 1% mixing ratio and 12:1 gas liquid ratio, and pass through
Foam line is delivered to compressed-air foam bolt housing 5, to meet the use demand of eight compressed-air foam bolt housings 5.
Claims (4)
1. a kind of tunnel fire system, including compressed-air foam generation device (1), system controller (2), compressed-air foam
Big gun (6), it is characterised in that: it further include compressed-air foam bolt housing (5), the compressed-air foam generation device (1), system control
Device (2) processed is arranged in the equipment cavern in tunnel, several compressed-air foam bolt housings (5), several compressed-air foams
Big gun (6) is separately positioned on the two sidewalls in tunnel, several compressed-air foam bolt housings (5) and several compressed-air foam big guns
(6) connect with compressed-air foam generation device (1) by foam line (3) respectively, several compressed-air foam bolt housings (5) and
Several compressed-air foam big guns (6) are connect by signal control line (4) with system controller (2) respectively, the compressed air bubble
Foam generation device (1) is connect by signal control line (4) with system controller (2)；
The compressed-air foam generation device (1), including fire pump (1-4), concentrated tank (1-5), foam pump (1-
8), air compressor (1-12), buffering gas tank (1-13), foam producer (1-17), it is characterised in that: further include water pot (1-
1), shut-off valve I (1-2), filter I (1-3), shut-off valve II (1-6), filter II (1-7), check valve I (1-9), water flow
Regulating valve (1-10), water ga(u)ge (1-11), gas flowmeter (1-14), gas flow regulating valve (1-15), II (1- of check valve
16), foam main pipe (1-18), water pot (1-1) outlet pass sequentially through shut-off valve I (1-2), filter I (1-3) and fire water
The entrance connection of (1-4) is pumped, fire pump (1-4) outlet passes through Water flow adjusting valve (1-10), water ga(u)ge (1-11)
Connect with the flow inlet of foam producer (1-17), the concentrated tank (1-5) outlet pass sequentially through shut-off valve II (1-6),
Filter II (1-7), foam pump (1-8), check valve I (1-9) and Water flow adjusting valve (1-10) and water ga(u)ge (1-11)
Between piping connection, the air compressor (1-12) outlet passes sequentially through buffering gas tank (1-13), gas flowmeter (1-
14), gas flow regulating valve (1-15), check valve II (1-16) are connect with the gas feed of foam producer (1-17)；It is described
System controller (2) by signal control line respectively with the output signal end of gas flowmeter (1-14), foam pump (1-8)
Flow control input terminal, the control signal of Water flow adjusting valve (1-10), water ga(u)ge (1-11) signal output end, gas
The control signal of flow control valve (1-15) connects；The foam outlet of foam producer (1-17) passes through foam main pipe (1-18)
It is connected with foam line (3)；
The compressed-air foam bolt housing (5) includes that single foam gun compressed-air foam bolt housing (5-1) and double foam gun compressions are empty
Gas foam bolt housing (5-2), the list foam gun compressed-air foam bolt housing (5-1) be included in cabinet (5-11) be equipped with it is a set of
Compressed-air foam bolt, a set of compressed-air foam bolt include moveable hinge connector (5-12), foam branch pipe (5-13), controlling alarm
Unit (5-14), side arm (5-15), partitioning control valve (5-16), fire hose reel (5-17), fire hose (5-18), foam
Rifle (5-19), the fire hose reel (5-17) are fixed on cabinet (5- by side arm (5-15) and moveable hinge connector (5-12)
11) in, fire hose reel (5-17) is equipped with fire hose (5-18), and one end of fire hose (5-18) connects foam gun
The other end of (5-19), fire hose (5-18) pass through partitioning control valve (5-16) and the foam branch being fixed on cabinet (5-11)
The outlet (5-13) connection is managed, foam branch pipe (5-13) entrance stretches out cabinet (5-11) and is connected to outside with the foam line of system (3), institute
It states alarm control unit (5-14) to be fixed in cabinet (5-11), the first signal output end of the alarm control unit (5-14)
It is connect with partitioning control valve (5-16), second signal output end is connect by signal control line (4) with system controller (2)；
Double foam gun compressed-air foam bolt housings (5-2), which are included in cabinet (5-11), is equipped with two sets of compressed-air foams
Bolt.
2. a kind of tunnel fire system according to claim 1, it is characterised in that: several compressed-air foam bolt housings
(5) it is alternately laid on the two sidewalls in tunnel according to identical spacing, i.e., it is several according to the laying of identical spacing in the tunnel wall of side
Compressed-air foam bolt housing (5), the other side corresponding to the middle position between every two compressed-air foam bolt housing (5)
A compressed-air foam bolt housing (5) is laid in tunnel wall, between the adjacent compressed-air foam bolt housing (5) of two of the same side
Distance is 30m~60m, and each compressed-air foam bolt housing (5) is away from ground 0.5m~1.5m；
One compressed-air foam big gun (6) or two compressed air bubbles are installed in the top of each compressed-air foam bolt housing (5)
Foam big gun (6), the distance between two compressed-air foam big guns (6) are two adjacent compressed-air foam bolt housings (5) of the same side
Between distance half, compressed-air foam big gun (6) is fixed in tunnel wall, away from ground 3m~6m.
3. a kind of tunnel fire system according to claim 1, it is characterised in that: on the fire hose reel (5-17)
The length for the fire hose (5-18) being equipped with is 10m~40m.
4. a kind of extinguishing method using tunnel fire system described in claim 1, it is characterised in that: steps are as follows,
A), under normal circumstances, system is in electriferous state, and air compressor (1-12) is in operating status, to guarantee to buffer gas
The gas of certain pressure is maintained in tank (1-13) and gas piping, fire pump (1-4) is in standby with foam pump (1-8)
State；
B), when fire occurs in tunnel, there are three types of system start-up mode is selective:
1. Field Force opens one or several compressed-air foam bolt housings (5) nearby, alarm control unit (5-14) is pressed
Start button, alarm signal are sent automatically to system controller (2) by signal control line, and system controller (2) receives letter
The partitioning control valve (5-16) of corresponding compressed-air foam bolt housing (5) is opened after number, and starts contracting air foam generation device
(1)；
2. one or several compressed-air foam big guns (6) utilize itself infrared flame detector or ultraviolet flame detector or number
Word image fire detection device automatic acquisition positions fire, and fire alarm signal is sent automatically by signal control line
To system controller (2), system controller (2) opens the zonal control for corresponding to compressed-air foam big gun (6) after receiving signal
Valve, and start contracting air foam generation device (1)；
3. after tunnel remote monitoring center staff is connected to fire alarm, can remotely start and manipulate one or several compressions
Air-foam cannon (6), and start contracting air foam generation device (1)；
C), the signal that system controller (2) is fed back according to each compressed-air foam bolt housing (5) or each compressed-air foam big gun (6)
Quantity, total water needed for adjust automatically water flow to the compressed-air foam bolt housing (5) and compressed-air foam big gun (6) having been turned on
Flow, while foam solution and gas flow be also according to water flow adjust automatically, make it according to preset foam solution mixing ratio and
Gas liquid ratio is mixed, formed compressed-air foam, and by foam line (3) be delivered to compressed-air foam bolt housing (5) or
Compressed-air foam big gun (6)；
D), there are three types of modes of fire suppression is selective:
Compressed-air foam is sprayed 1. holding the foam gun (5-19) in cabinet (5-11) by Field Force and being directed at fire area,
Targetedly fire extinguishing is carried out to save；
2. automatically tracking alignment fire area by compressed-air foam big gun (6) sprays compressed-air foam, put out a fire；
3. being directed at fire area by staff's remote control compressed-air foam big gun (6) sprays compressed-air foam, carry out
Fire extinguishing；
E), after fire extinguishing, the stopping that Field Force presses compressed-air foam bolt housing (5) alarm control unit (5-14) is pressed
Button sends stop signal or compressed-air foam big gun (6) detection less than fire and from trend system to system controller (2)
Controller (2) sends stop signal or staff remotely stops each compressed-air foam big gun (6), to system controller
(2) stop signal is sent, system controller (2) is fed back according to each compressed-air foam bolt housing (5) and compressed-air foam big gun (6)
Number of signals, water flow, foam solution mixing ratio and gas liquid ratio are adjusted in time, when all alarm control units (5-14) and pressure
When contracting air-foam cannon (6) all stops, compressed-air foam generation device (1) is automatically closed in system controller (2), is simultaneously closed off
The partitioning control valve of compressed-air foam bolt housing (5) and compressed-air foam big gun (6), system restore initial shape under normal circumstances
State.
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| CN201610202511.0A CN105749449B (en) | 2016-04-05 | 2016-04-05 | A kind of tunnel fire system and extinguishing method |
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| CN201610202511.0A CN105749449B (en) | 2016-04-05 | 2016-04-05 | A kind of tunnel fire system and extinguishing method |
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| CN105749449B true CN105749449B (en) | 2019-01-25 |
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Address after: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Patentee after: Tianjin Institute of Fire Protection, Ministry of Emergency Management Address before: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Patentee before: Tianjin Fire Fighting Inst., Ministry of Public Security |