CN111346321B - Flexible flame-retardant explosion suppression system for tunnel - Google Patents
Flexible flame-retardant explosion suppression system for tunnel Download PDFInfo
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- CN111346321B CN111346321B CN202010275017.3A CN202010275017A CN111346321B CN 111346321 B CN111346321 B CN 111346321B CN 202010275017 A CN202010275017 A CN 202010275017A CN 111346321 B CN111346321 B CN 111346321B
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- air
- suppression system
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- 238000004880 explosion Methods 0.000 title claims abstract description 27
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- 230000001629 suppression Effects 0.000 title claims abstract description 21
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- 238000000429 assembly Methods 0.000 claims abstract description 13
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 44
- 239000001569 carbon dioxide Substances 0.000 claims description 22
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 22
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000000741 silica gel Substances 0.000 description 8
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Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a tunnel flexible flame-retardant explosion suppression system, which relates to the field of tunnel fire-fighting facilities, and comprises the following components: a plurality of fire detectors are arranged along the axial direction of the tunnel; one or more air bag assemblies are arranged on two sides of each fire detector; each fire detector is connected with the air bag assemblies at the two sides through leads or a control device. The airbag module includes: a housing having at least one movable opening; an air bag made of high temperature resistant material and arranged inside the shell; an expansion device for receiving the signal of the fire detector and rapidly expanding the air bag; after the balloon is inflated, part of the tunnel is blocked and the tunnel is divided into two spaces.
Description
Technical Field
The invention relates to the field of tunnel fire-fighting facilities, in particular to a tunnel flexible flame-retardant explosion suppression system.
Background
The building of tunnel structure like traffic tunnel, municipal pipe gallery etc. has the space long and narrow, and is narrow, and the temperature is suddenly high in the tunnel when the conflagration breaks out, and the wind speed is great in the tunnel moreover, and a large amount of smog that the combustible produced carried toxic gas will be diffused all around rapidly from the department of firing, not only seriously endanger the life safety of personnel in the tunnel, make the rescue be difficult to arrive in time, also cause serious damage to tunnel main part and affiliated facilities, cause very big economic loss.
The measures adopted for the tunnel fire prevention at present mainly comprise rigid fireproof doors, flexible fireproof doors and the like. The rigid fireproof door can provide a safe passage for personnel to transfer after a fire disaster occurs, and can prevent open fire and smoke from being rapidly diffused, so that the rigid fireproof door is a main means at present. The rigid fireproof door has an explosion-proof function, but is generally heavy, high in cost and easy to influence the effect due to bad closing timing.
The new flexible tunnel fireproof roller shutter at present, when the condition of a fire happens, the roller shutter piece sags under the action of gravity to form isolation, the cost is low, the installation is convenient, the time for isolating the smoke is easy to master, but the defect is that the sealing effect is poor, and the isolating effect on the smoke and combustion air is not ideal.
Municipal pipe gallery builds a tunnel space in the city underground, collects various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage in an organic whole, also separates pipe gallery internal partition into a plurality of independent fire prevention subregions through the fire prevention door, however current fire prevention door adopts electronic component control door leaf to open generally, because pipe gallery is in the underground, and air humidity is big, causes short circuit or contact failure very easily, leads to electronic component to become invalid, makes prevent fire door unable normal open. If the gas duct fires, there is also the possibility of explosion after the fire door is closed. The prior municipal pipe gallery can not automatically extinguish and isolate the primary fire.
Disclosure of Invention
The invention aims to provide a tunnel flexible flame-retardant explosion suppression system, which solves the problems that flame and smoke are easy to diffuse rapidly in the fireproof of tunnel structure buildings, the fireproof effect of the existing fireproof door is poor, and the primary fire can not be automatically extinguished, the fire source is isolated and the explosion is suppressed.
To solve the above problems, a first aspect of the present invention provides a tunnel flexible flame-retardant explosion suppression system, including: a plurality of fire detectors are arranged along the axial direction of the tunnel; one or more air bag assemblies are arranged on two sides of each fire detector; each fire detector is connected with the air bag assemblies at the two sides through a wire or a control device; the airbag module includes: a housing having at least one movable opening; an air bag made of high temperature resistant material and arranged inside the shell; an expansion device for receiving a signal from the fire detector to rapidly expand the airbag. The balloon can partially block the tunnel and divide the tunnel into two spaces after being inflated. The fire disaster detector detects the fire disaster in the tunnel, the air bag components at two sides of the fire disaster detector can be directly controlled, the fire disaster detector can also send signals to the control device, the signals are processed by the control device and then sent to the air bag components, the air bag components open the shell, the air bag is rapidly expanded through the expansion device, the fire point is rapidly isolated, the effect of the fireproof door is achieved, and the loss caused by the fire disaster can be reduced by densely arranging the fire disaster detector and the air bag components. The air bag can generate external extrusion force through internal air pressure, so that the tightness can be improved. The shape after the gasbag inflation is the cylinder and blocks up the tunnel, can prevent the rapid diffusion of fire point, plays the effect of preventing fire door, and the flexible characteristic of gasbag can reduce the influence of the content in the tunnel to the isolation effect. And the fire door can not occupy space for installation and setting like a fire door, and cannot be closed in time due to the influence of contents. And the air bag can discharge a large amount of air around the ignition point in the process of expanding, so that the ignition point is prevented from spreading rapidly. The petroleum products must have three elements, oxygen, combustibles and temperature, and the explosion does not occur if one element is cut off. The invention can prevent the possibility of explosion by reducing oxygen near the ignition point. Compared with a fireproof door, the flexible fire extinguishing system provided by the embodiment has the advantages of faster response speed, capability of adapting to severe environments, higher reliability, convenience in maintenance and capability of reducing loss in case of fire. Wherein the fire detector may be: a smoke detector, a temperature detector, a flame detector, and a special gas detector; ion type detector, photoelectric detector; linear detectors, spot detectors, cable detectors, infrared beam detectors, including but not limited to the examples described above. The fire detector can be used singly or in combination. The air bag can be made of high-temperature resistant materials, and the high-temperature resistant materials can be coated or coated on the outer surface of the air bag, so that the air bag can meet the safety requirement of being in direct contact with a fire point. Wherein the high temperature resistant material includes, but is not limited to, refractory fibers and refractory silicone tapes. The exterior of the flexible air bag can also be partially coated or coated with a fire-resistant coating to enable the air bag to meet the safety requirements of being in direct contact with a fire point, wherein the fire-resistant coating comprises, but is not limited to, phenolic-based fire-resistant coating, latex fire-resistant coating, polyvinyl acetate emulsion-based fire-resistant coating, room-temperature self-drying water-soluble expansion fire-resistant coating, polyolefin fire-resistant insulating coating, modified high-chlorine polyethylene fire-resistant coating, chlorinated rubber expansion fire-resistant coating, fire-proof coating, foaming fire-resistant coating and wire and cable fire-resistant coating. Wherein the shell can be controlled to open and close by the electromagnetic valve.
The air bag assembly is further technically characterized in that two air bag assemblies are arranged on the same axial surface of the tunnel in a group, when the air bags of the two air bag assemblies are inflated, the two air bags can be mutually extruded to block the axial surface, and personnel can squeeze the two inflated air bags. Personnel can squeeze through from gasbag to gasbag, and the gasbag can keep apart the fire point through continuing after personnel passes by, can not destroy the closure of gasbag to the fire point. The air bag can generate external extrusion force through internal air pressure, so that the tightness can be improved. The two air bags are arranged to seal and isolate the same position, so that the volume of the air bags can be reduced, the air bags can be inflated more quickly, and the reaction speed of the system is improved. The air bags can be printed with the mark sign for people evacuation, thereby facilitating people evacuation.
The further technical characteristics are that the bottom of the air bag is provided with a positioning magnetic block; the magnetic blocks or magnetic materials matched with the positioning magnetic blocks are arranged on the ground of the tunnel. To enable personnel to pass between the balloons, the thickness of the balloons cannot be set too thick, but thinner balloons may deflect in the tunnel axis direction resulting in poor sealing. The positioning magnetic block can solve the problem, and the airbag can not reset after passing the personnel is prevented. Preferably, a magnet block is arranged on the ground of the tunnel, and a nickel-iron block or other materials attracted by the magnet are arranged at the bottom of the air bag to prevent the influence of other metal pipelines in the tunnel. The bottom of the air bag can be provided with a positioning block which can be attracted by magnetic materials, and the ground of the tunnel is provided with magnetic blocks or magnetic materials matched with the positioning block. Therefore, the magnet blocks inside the air bag can be prevented from attracting each other when the air bag is folded, and the air bag is not smooth or can not be fully inflated in the inflation process.
Further technical characteristics are that the air bag is internally provided with a shape memory skeleton made of shape memory steel wires. The shape memory skeleton arranged in the air bag is made of shape memory steel wires, the shape after being unfolded can be memorized, after the air bag is unfolded and released by the shell of the air bag component, the air bag rapidly pops open under the action of the restoring force of the shape memory skeleton, and the air bag is supported primarily, so that the air bag is inflated by the expansion device conveniently. The larger air bag can be rapidly expanded through the shape memory framework, and the response time after a fire is found is reduced. The shape memory skeleton can be including setting up the annular support circle at the gasbag both ends face and connecting the go-between of two annular support circles, and the shape memory skeleton not only can play the supporting role to the gasbag, can also restrict the gasbag and expand at the transition of non-working face, causes the waste of inflation time.
Further technical characteristics is that the expansion device injects carbon dioxide gas into the air bag, and the bottom of the air bag is provided with an overflow hole which can release the carbon dioxide gas therein to the periphery. The carbon dioxide gas can be flame-retardant, has a density heavier than that of air, can be discharged from the air bag to the periphery and then can be discharged from the bottom to the top, and the effect of rapidly controlling the fire condition is achieved. And no other fire extinguishing systems or devices are needed, so that the complexity of the whole system is reduced, and the reliability of the system is improved.
A further technical feature is that the expansion device comprises: one or more of an electric air pump, a compressed air bottle and an air bag detonating device. When the expansion device is an electric air pump, the air bag can be inflated, and the cost is reduced. The expansion rate of the bladder is faster when the expansion device is a compressed gas cylinder, wherein the liquefied gas in the compressed gas cylinder may be air, nitrogen, carbon dioxide, including but not limited to the examples described above. When the inflation device is an airbag squib, the inflation speed of the airbag can be further increased, wherein the airbag squib can use the airbag squib of the airbag. The electric air pump, the compressed air bottle and the air bag detonating device can be used in sequence or simultaneously by setting the use sequence, so that the expansion speed of the air bag is increased, and a fire source is isolated as soon as possible. The expansion device is preferably a compressed gas cylinder, in particular a compressed carbon dioxide gas cylinder. The compressed gas absorbs heat from the surroundings in the gasification expansion process, and can play a role in inhibiting the combustion of the ignition point.
Further technical characteristics are that the surface of the air bag is provided with a fire extinguishing medium release bag; the fire extinguishing medium release bag is sealed by a bolt, the pulling-out end of the bolt is connected with the surface of the air bag, and the bolt can be pulled out after the air bag is inflated. The fire extinguishing medium is directly arranged on the surface of the air bag, and the fire extinguishing medium can be directly released to extinguish the fire after the air bag is fully expanded, so that the fire disaster which occurs initially can be more rapidly extinguished in the reaction process is reduced.
Further technical features are that the air bag comprises a supporting bag body; the support capsule body is ring-shaped with the same section as the tunnel after being inflated. The supporting bag body of the air bag is an annular auxiliary air bag arranged in the middle or on two sides of the air bag, the supporting bag body is inflated by the inflation device, so that the supporting bag body is inflated, the effect of isolating a fire point can be achieved to a certain extent after the supporting bag body is inflated, and the supporting effect of the supporting bag body is more beneficial to the opening and inflation of other parts of the air bag.
Further technical characteristics are that the surface of the air bag is coated with expansion type fireproof paint. The expansion type fireproof paint expands and foams when heated to form a carbonaceous foam heat insulation layer to seal a protected object, delay the transfer of heat and a base material, and prevent the object from igniting and burning or reducing strength caused by temperature rise. The expansion type fireproof coating can further coat and seal the barrier which cannot be coated by the air bag in the expansion process, so that the sealing performance is improved. Wherein, fireproof silica gel and fireproof mud can be coated. The fireproof silica gel is a low-viscosity pouring sealant, low-hardness, self-adhesive and good fireproof material. The fireproof mud can be fireproof silica gel, and the fireproof silica gel is a low-viscosity pouring sealant, low-hardness, self-adhesive and good fireproof material. The high-temperature resistant silica gel coated on the surface of the air bag can prevent the hard objects from being cut during the expansion process of the air bag, and the high-temperature resistant silica gel has certain elasticity and can improve the isolation effect of the air bag on the ignition point. The flame-retardant cable can be melted under the influence of high temperature at the ignition position, and is changed into a semi-liquid state to cover the easily-ignited objects such as cables and the like, so that the flame-retardant cable has a flame-retardant effect.
Further technical characteristics is that the fire detector is also electrically connected with a life detector and an alarm device. In a tunnel with personnel passing, whether life bodies exist in the tunnel or not is required to be detected for protecting personnel from being evacuated, or an airbag is controlled manually, so that casualties are prevented. Under the condition, the fire detector does not directly control the air bag assembly to inflate the air bag after monitoring the fire, but detects the condition of a living body in the tunnel through the life detector, and controls the inflation device to inflate the air bag after no personnel are detained in the tunnel. And when the personnel are found to be detained, an alarm is sent to the personnel detained by the alarm device and the personnel in the monitoring room. When the person is evacuated, the air bag device is started again to isolate the ignition point.
Description of the principles of the invention: according to the invention, the fire point in the tunnel is detected by the fire detector, the air bag assemblies arranged on two sides of the fire detector are controlled, the air bags are inflated by controlling the inflation device, the air bags are rapidly inflated to divide the tunnel, and the two air bags separate the fire point from other spaces of the tunnel. During the expansion process of the air bag, the air around the ignition point can be squeezed away, so that the explosion of the ignition point is prevented. The flexible characteristic of the air bag can adapt to the cross-sectional shapes of various tunnels, reduces the influence of the content in the tunnels, and has a good partition effect. In a further technical scheme, the air bag component releases the fire extinguishing medium to the periphery of the air bag after the air bag is inflated, so that the effect of automatically extinguishing the primary fire can be achieved.
The technical scheme of the invention has the following beneficial technical effects:
(1) The fire-fighting device can isolate fire points, prevent open fire and smoke from being rapidly spread and reduce loss for building fires occurring in tunnel structures.
(2) The fire disaster reaction is rapid, the fire disaster can be quickly isolated at the initial stage of the fire disaster, the air is discharged, the explosion is reduced, and the device is easy to install and low in cost.
(3) The soft characteristic of the air bag can achieve a better blocking effect on the fire point by filling the air bag into the tunnel to isolate the fire point. The pillar which is blocked in the tunnel after the air bag is expanded is in cylindrical contact with the tunnel surface, so that the sealing effect is good, and the blocking effect on the smoke and the combustion air is ideal.
(4) The fire extinguishing device has the advantages of simple structure and high reliability, can stably work in severe environments, and can automatically extinguish and isolate a primary fire.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 according to the present invention;
FIG. 2 is a use state diagram according to embodiment 1 of the present invention;
FIG. 3 is a schematic cross-sectional view of embodiment 2 according to the present invention;
FIG. 4 is an enlarged view according to portion A of FIG. 3;
FIG. 5 is a use state diagram according to embodiment 3 of the present invention;
FIG. 6 is a schematic cross-sectional view of embodiment 4 according to the present invention;
FIG. 7 is a schematic cross-sectional view of an airbag assembly according to embodiment 4 of the invention;
FIG. 8 is a shape memory skeleton shape schematic diagram according to embodiment 4 of the present invention;
FIG. 9 is a diagram of a shape memory skeleton folding process according to embodiment 4 of the present invention;
FIG. 10 is a schematic diagram showing the completion of folding of the shape memory skeleton according to embodiment 4 of the present invention;
FIG. 11 is a schematic view showing an inflation process of an airbag module according to embodiment 5 of the present invention;
FIG. 12 is an enlarged view of portion B according to FIG. 11;
FIG. 13 is a schematic view showing the completion of inflation of the airbag module according to embodiment 5 of the present invention;
fig. 14 is an enlarged view of a portion C of fig. 13.
Reference numerals: 1: a tunnel; 2: a fire detector; 3: an airbag module; 4: high temperature resistant silica gel; 5: a cable; 6: a life detector; 7: an alarm device; 8: an exhaust passage; 31: a housing; 32: an air bag; 33: an expansion device; 34: a fire extinguishing medium releasing bag; 35: a plug pin; 36: positioning a magnetic block; 37: a shape memory skeleton; 371: a support ring; 372: a connecting ring; 320: and supporting the capsule body.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Example 1
A tunnel flexible flame-retardant explosion suppression system is used for isolating a fire point in a tunnel 1 and preventing a fire source from being diffused. As shown in fig. 1, one temperature-sensitive fire detector 2 is provided every 10m in the axial direction of the tunnel 1; an airbag module 3 is arranged between every two fire detectors 2, and the airbag module 3 is arranged at the top end of the tunnel 1. As in the cross-sectional view of the airbag assembly 3 in fig. 1, the airbag assembly 3 includes: a housing 31; an airbag 32 provided inside the housing 31; an air pump for rapidly expanding the air bag 32. The bladder 32 is made of high purity aluminum silicate refractory fiber having a maximum service temperature of 1260 c and a long service temperature of about 1100 c. The temperature-sensitive fire detector 2 controls the air pump through the electromagnetic valve. The shell 31 is arranged in a cavity preset at the top of the tunnel 1, a bottom plate is arranged at the bottom of the shell 31, and the shell is controlled by the temperature-sensitive fire detector 2 through another electromagnetic valve. The balloon 32 is made of refractory fiber. Each fire detector 2 is electrically connected to the air pumps of the two air bag modules 3 on both sides. When the fire detector 2 detects a fire, a signal is sent to the electromagnetic valve controlling the bottom plate of the shell 31 and the air pump, the shell 31 is opened and the air pump is started, so that the air bags 32 on the two sides of the fire detector 2 detecting the fire are inflated.
As shown in fig. 2, a fire occurs on a cable 5 at the lower portion of the tunnel 1, and a fire detector 2 is provided at the upper end of the fire. The fire detector 2 finds out the air bag components 3 at two sides of the controller after fire, the bottom plates of the two air bag component 3 shells 31 are opened through the electromagnetic valves, the electromagnetic valves are controlled to start the air pump, the air bag falls into the tunnel under the self gravity and the inflation force of the air pump, the air pump pumps the air into the air bag 32 to expand the air bag 32, the air bag 32 is in a cylinder shape after expansion, and the tunnel 1 is partially blocked and divided into two spaces. After the two airbags 32 are inflated, the tunnels 1 at the two ends of the fire point are respectively blocked, so that a flexible isolation space is formed, and fire and smoke are prevented from diffusing to the two ends of the tunnels 1. The inflation of the air bag 32 expels a large amount of air around the fire, preventing the fire from detonating and reducing its combustion.
A fire point occurs near the airbag module 3 and is within a coverage area after the airbag 32 is inflated, and the fire point is found by the fire detector 2, and the fire detector 2 controls the left and right airbag modules 3 to operate. The location of the fire is within the range covered by the inflated bladder 32, covered by the bladder 32, and choked in the absence of air.
Example 2
A tunnel flexible flame-retardant explosion suppression system is used for isolating a fire point in a tunnel 1 and preventing a fire source from being diffused. Is a further modification of example 1, except that the air bag 32 is made of a fire-resistant silicone tape, and the surface is coated with a chlorinated rubber intumescent fire retardant coating, unlike example 1. As shown in fig. 3, two air bag assemblies 3 are arranged on the same axial plane of the tunnel 1 in a group, the shells of the air bag assemblies are symmetrically arranged, and the expansion device is a carbon dioxide gas cylinder. The two airbags 32 are respectively provided with positioning magnets 36 at the contact surfaces. When the air bags 32 of the two air bag modules 3 are inflated, the positioning magnetic blocks 36 attract each other, so that the air bags 32 are prevented from swinging along the axial direction of the tunnel 1. Fig. 4 is a schematic installation diagram of the positioning magnet 36 in the portion a in fig. 3, and the positioning magnet 36 on the two air bags 32 are arranged in a staggered magnetic pole manner, so that the positioning between the air bags 32 is accurate. The inflated air bags 32 are mutually extruded to block the axial surface of the tunnel 1, and the two air bags 32 are completely inflated to have a vertical contact line, so that personnel can squeeze through the contact line between the two inflated air bags 32. After passing through, the two air bags 32 can be restored to the original positions under the action of the positioning magnetic blocks 36, and the fire points are continuously isolated. Compared with the emergency exit, the flexible fire-retardant explosion suppression system in tunnel that this embodiment provided can make things convenient for personnel to withdraw, when fire fighter gets into and puts out a fire, can pass between the gasbag 32, also can be to letting out the gas in the gasbag 32, need not to destroy the emergency exit, the lighter entering fire disaster in-range of putting out a fire.
Example 3
A flexible flame-retardant explosion suppression system for a tunnel is used for isolating a fire point in the tunnel 1, preventing the fire source from being diffused and automatically extinguishing the initially-occurring fire. Is a further modification of example 1, except that the air bag 32 is made of a fire-resistant silicone tape, and the surface is coated with a polyvinyl acetate emulsion-based fire-retardant coating material, unlike example 1. As shown in fig. 5, the expansion device 33 is a compressed air cylinder, and its air outlet is connected to the air bag 32 through a solenoid valve. The fire disaster detector 2, the life detector 6 and the alarm device 7 are respectively connected with the control device through wires, the carbon dioxide fire extinguisher 9 controlled by an electromagnetic valve is further arranged at the top of the tunnel 1, and the electromagnetic valve of the carbon dioxide fire extinguisher 9 is connected with the control device through wires; the bottom of the shell is provided with a bottom plate which is fixed through an electromagnetic valve, the electromagnetic valve is also connected with a control device through a wire, and the top of the tunnel 1 is provided with an exhaust channel 8.
When the fire detector 2 detects that a fire occurs, a signal is sent to the control device, and when the life detector 6 detects that personnel nearby the fire are active and sends the signal to the control device, the control device directly or manually sends an alarm to accessory personnel through the alarm device 7, and people nearby the fire are evacuated. When the life detector 6 cannot detect the movement of the person, which indicates that the person near the fire point is completely evacuated, the control device controls the electromagnetic valve of the shell to open the bottom plate, so that the air bag 32 falls down, and controls the electromagnetic valve of the compressed air cylinder to open so as to inflate the air bag 32, and the inflation process of the air bag 32 is shown in fig. 5, and the arrow indicates the inflation state direction of the air bag 32. When the air bag 32 is inflated and expanded, the control device controls the electromagnetic valve of the carbon dioxide fire extinguisher 9 to be opened, and the fire is initially extinguished.
Example 4
A flexible flame-retardant explosion suppression system for tunnels is used for isolating fire points in municipal pipe galleries, preventing the diffusion of fire sources and automatically extinguishing the primary fire. Is a further modification of example 3, except that the air bag 32 is made of a fire-resistant fiber, and the surface is coated with a fire-resistant paint of a latex. And the bottom of the air bag 32 is provided with a deflation port; the expansion device 33 is a compressed carbon dioxide gas cylinder, the gas outlet of which is connected with the air bag 32 through an electromagnetic valve, the electromagnetic valve is connected with the fire detector 2 through a wire, and the fire detector 2 sends a signal to open the electromagnetic valve of the compressed carbon dioxide gas cylinder after detecting a fire, so as to inflate the air bag 32. As shown in fig. 6, the cable 5 in the tunnel 1 fires, the fire detector 2 controls the casing of the air bag module 3 to open, and controls the electromagnetic valve of the compressed carbon dioxide gas cylinder to open, and the air bag 32 falls into the middle of the tunnel under the self weight of the air bag 32 and the acting force of the compressed carbon dioxide gas cylinder to inflate. The compressed carbon dioxide gas cylinder causes the bladder 32 to expand rapidly to isolate the fire. After the inflation is completed, the deflation port provided at the lower part of the air bag 32 discharges part of carbon dioxide gas, the density of the carbon dioxide gas is higher than that of the air, the carbon dioxide gas can be accumulated from bottom to top, the air is discharged from the exhaust channel 8, and the 1-ignition point is isolated from the air, so that the initial extinguishing of the ignition point is performed.
As shown in fig. 7, which is a sectional view of the airbag 32 after being fully inflated, a support airbag body 320 is provided in the middle of the airbag 32; the support capsule 320 has the same annular shape as the cross section of the tunnel 1 after being inflated. The upper portion of the support bag 320 is provided with a one-way inflation port, which can keep an inflated state until the fire is extinguished, and isolate the fire. The shape memory skeleton 37 made of shape memory steel wires is installed inside the airbag, and as shown in fig. 8, the shape memory skeleton 37 includes annular support rings 371 provided at both end surfaces of the airbag 32 and connection rings 372 connecting the two annular support rings 371, and the shape memory skeleton 37 can be folded and accommodated in the housing 31 along with the airbag 32. When the shape memory skeleton 37 is compressed and reduced and is taken in the casing, the connecting ring 372 is first rotated in the direction of the arrow in fig. 8 to obtain the shape memory skeleton as shown in fig. 9, and the two annular support rings 371 are rotated to the same side of the connecting ring 372, so that the shape memory skeleton 37 can be folded into the shape as shown in fig. 10 by folding in the direction of the arrow in fig. 9, and the shape memory skeleton can be easily prevented from being taken in the casing. The shape of the annular supporting ring 371 needs to be set according to the situation in the tunnel 5 to avoid the pipeline such as the cable 5, the annular supporting ring 371 is in multipoint connection with the inner surface of the air bag 32, and the expansion of the air bag 32 is not affected when the annular supporting ring 371 cannot be fully unfolded due to the environmental limitation. After the fire detector 2 detects a fire, the electromagnetic valve for controlling the carbon dioxide gas cylinder is opened to inflate the air bag 32, the supporting bag body 320 is small in size, the inflation is completed at first, the municipal pipe gallery is divided, the supporting effect is achieved on other parts of the air bag 32, and the air bag 32 is easier to inflate and expand.
Example 5
A flexible flame-retardant explosion suppression system for tunnels is used for isolating fire points in municipal pipe galleries, preventing the diffusion of fire sources and automatically extinguishing the primary fire. A further modification of embodiment 3 is that, unlike embodiment 2, the bottom of the housing 31 is provided with a one-piece bottom plate, which is connected to the housing by a solenoid valve. And as shown in fig. 11, the surface of the air bag 32 is provided with a plurality of small steel bottles filled with liquefied carbon dioxide as fire extinguishing medium releasing bags 34; the small steel bottle is sealed by a bolt 35, and the pulling-out ends of the small steel bottle and the bolt 35 are connected with the surface of the air bag 32. As shown in fig. 12, which is an enlarged view of the portion a in fig. 6, when the airbag 32 is folded and placed in the housing 31, the distance between the latch 35 and the vial is small, and the posture of the latch 35 inserted in the air outlet of the vial can be maintained. As shown by the broken line in fig. 11, when the solenoid valve of the floor panel is released, the floor panel falls down to the ground by its own weight, and the air bag 32 placed in the housing falls down by the weight and the inflation means and is inflated at the same time. The plug 35 is pulled out by the energy of the expansion of the air bag 32 when the air bag 32 is expanded, and the carbon dioxide gas is discharged as shown in fig. 13, and when the air bag 32 is expanded, the distance between the plug 35 and the small-sized steel bottle increases, and as shown in fig. 14, the plug 35 is pulled out from the small-sized steel bottle as shown in an enlarged view of the portion B in fig. 8.
Example 6
A tunnel flexible flame-retardant explosion suppression system is a further improvement of the embodiment 1, and is different from the embodiment 1 in that an expansion device 33 is an electric air pump and a compressed air cylinder, and the electric air pump and the compressed air cylinder are simultaneously used when the air bag 32 is inflated, so that the air bag 32 can be inflated more quickly; and the surface of the airbag 32 is coated with the high temperature resistant silica gel 4. After the inflation of the airbag 32, the gap of the tunnel 1 can be filled, and the sealing performance can be improved. Prevent smog diffusion and prevent ventilation to support combustion for the ignition point.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.
Claims (8)
1. A tunnel flexible flame retardant explosion suppression system, comprising: a plurality of fire detectors (2) are arranged along the axial direction of the tunnel (1); one or more air bag assemblies (3) are arranged on two sides of each fire detector (2); each fire detector (2) is connected with the air bag assemblies (3) at two sides through a wire or a control device;
the airbag module (3) comprises: -a housing (31), said housing (31) having at least one movable opening; an airbag (32) made of a high-temperature resistant material and provided inside the housing (31); an expansion device (33) for receiving a signal from the fire detector (2) to rapidly expand the airbag (32);
after the air bag (32) is inflated, the part of the tunnel (1) is blocked, and the tunnel (1) is divided into two spaces;
the two air bag assemblies (3) are arranged on the same axial surface of the tunnel (1) in a group, when the air bags (32) of the two air bag assemblies (3) are inflated, the air bags can be mutually extruded to block the tunnel (1) from the axial surface, and personnel can squeeze between the two inflated air bags (32);
a shape memory skeleton (37) made of shape memory steel wires is arranged in the air bag (32);
shape memory skeleton (37) are including setting up annular support circle (371) at gasbag (32) both ends face and connecting ring (372) of connecting two annular support circles (371), and shape memory skeleton (37) can fold along with gasbag (32) and accomodate in casing (31), and wherein the shape of annular support circle (371) need be set up according to the condition in tunnel (5) in, avoid cable (5) pipeline, and annular support circle (371) are multi-point connection with gasbag (32) internal surface, can not influence the inflation of gasbag (32) when annular support circle (371) receive the environmental constraint unable complete expansion.
2. The tunnel flexible flame-retardant explosion suppression system according to claim 1, wherein the tunnel (1) is ground mounted with positioning magnetic blocks (36); and a magnetic block or a magnetic material matched with the positioning magnetic block (36) is arranged at the bottom of the air bag (32).
3. The tunnel flexible flame-retardant explosion suppression system according to claim 1, wherein the expansion device (33) injects carbon dioxide gas into the air bag (32), and an overflow hole is arranged at the bottom of the air bag (32) and can release the carbon dioxide gas therein to the periphery.
4. The tunnel flexible flame-retardant explosion suppression system according to claim 1, wherein the surface of the air bag (32) is provided with a fire extinguishing medium release bag (34), and after the air bag (32) is inflated, the fire extinguishing medium is released to the periphery of the air bag (32); the fire extinguishing medium releasing bag (34) is sealed through a plug pin (35), the pulling-out end of the plug pin (35) is connected with the surface of the air bag (32), and the plug pin (35) can be pulled out after the air bag (32) is expanded.
5. The tunnel flexible flame retardant explosion suppression system of claim 1, wherein the air bag (32) comprises a support bladder (320); the support capsule body (320) is annular with the same section as the tunnel (1) after being expanded.
6. The tunnel flexible flame-retardant explosion suppression system according to claim 1, wherein the expansion device (33) comprises: one or more of an electric air pump, a compressed air bottle and an air bag detonating device.
7. The tunnel flexible flame-retardant explosion suppression system according to claim 1, wherein the surface of the airbag (32) is coated with fire-retardant mud.
8. The tunnel flexible flame-retardant explosion suppression system according to claim 1, wherein the fire detector (2) is further connected with a life detector (6) and an alarm device (7) through wires.
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| CN112326308B (en) * | 2020-09-16 | 2024-03-26 | 北京卫星制造厂有限公司 | Chemical actuation device for breaking and stripping substances on surface of weak-attraction celestial body and stripping method |
| CN112957634B (en) * | 2021-02-06 | 2022-02-22 | 威特龙消防安全集团股份公司 | Totally enclosed gas fire extinguishing isolation device |
| US11711903B1 (en) * | 2021-02-18 | 2023-07-25 | Amazon Technologies, Inc. | Server rack flood shroud |
| CN114590406B (en) * | 2022-05-10 | 2022-11-08 | 西安深瞳智控技术有限公司 | Unmanned aerial vehicle guidance bomb device |
| CN115492634B (en) * | 2022-09-30 | 2025-07-04 | 应急管理部四川消防研究所 | An inflatable plugging structure for the entire section of a tunnel under extreme fire conditions |
| CN115989928B (en) * | 2023-02-14 | 2024-09-27 | 江西远大保险设备实业集团有限公司 | File cabinet with flame retardant function and use method |
| CN116105566B (en) * | 2023-04-07 | 2023-06-16 | 中国矿业大学(北京) | A method and device for explosion suppression of gas tanks in integrated pipe corridors based on energy-absorbing materials |
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