CN113616954A - Water mist fire extinguishing system and method for aircraft cargo compartment - Google Patents
Water mist fire extinguishing system and method for aircraft cargo compartment Download PDFInfo
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- CN113616954A CN113616954A CN202110950535.5A CN202110950535A CN113616954A CN 113616954 A CN113616954 A CN 113616954A CN 202110950535 A CN202110950535 A CN 202110950535A CN 113616954 A CN113616954 A CN 113616954A
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- 239000003595 mist Substances 0.000 title claims abstract description 36
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- 238000009826 distribution Methods 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 230000001276 controlling effect Effects 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000010792 warming Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 23
- 229920004449 Halon® Polymers 0.000 abstract description 16
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000779 smoke Substances 0.000 description 7
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- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
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- 125000001246 bromo group Chemical group Br* 0.000 description 1
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
- A62C3/08—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in aircraft
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
- A62C31/07—Nozzles specially adapted for fire-extinguishing with two or more outlets for different media
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/04—Control of fire-fighting equipment with electrically-controlled release
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model provides an aircraft cargo hold water mist fire extinguishing systems, includes one or more on-board water source, one or more on-board air supply, cargo hold fire extinguishing pipeline, fire extinguishing systems controlling means, cockpit fire extinguishing control unit, still includes: the onboard water source comprises a water source pipeline connected to the cargo compartment fire-extinguishing pipeline, the onboard air source comprises an air source pipeline connected to the cargo compartment fire-extinguishing pipeline, and the cargo compartment fire-extinguishing pipeline extends into the cargo compartment and comprises a plurality of dual-fluid fire-extinguishing nozzles; a first power distribution unit for controlling the on-board water source; a second power distribution unit for controlling the onboard air supply; a third power distribution unit for controlling the cargo compartment fire suppression piping; the first power distribution unit, the second power distribution unit and the third power distribution unit are controlled by the fire extinguishing control unit of the fire extinguishing cockpit. The invention utilizes the existing water resource and pressure gas source on the airplane to replace the traditional HALON fire extinguishing agent to realize the high-efficiency fire extinguishing in the cargo hold controlled by the cockpit. The invention also relates to a fire extinguishing method using the water mist fire extinguishing system for the cargo compartment of the airplane.
Description
Technical Field
The invention relates to the field of aircraft manufacturing, in particular to a water mist fire extinguishing system and method for an aircraft cargo compartment.
Background
According to the CCAR 25.857 cargo bay class, clause C specifies that a class C cargo bay is to be configured with an approved stationary fire suppression or suppression system that is maneuverable from the cockpit for commercial transport-type aircraft. The prior HALON cargo hold fire extinguishing system using HALON1301 fire extinguishing agent is widely applied in the field of civil aircraft.
The HALON1301 fire extinguishing agent is an efficient and stable alkyl halide fire extinguishing agent, but the fire extinguishing agent has extremely strong destructive effect on an ozone layer due to the fact that the fire extinguishing agent contains bromine atoms, and the ozone depletion potential ODP and the greenhouse effect potential GWP of the fire extinguishing agent are respectively 10.0 and 5.1. With the increasing emphasis of the international society on the field of environmental protection, the environmental protection program (UNEP) of united nations started to pay attention to the problem of depletion of the ozone layer in the last 70 th century, and through a series of discussions and programs, the meeting was held through the montreal protocol on depletion of ozone layer substances in 1987 and 1990, which explicitly stipulates the production and use control schedules of 5 kinds of chlorofluorocarbon substances and 3 kinds of HALON substances.
For the aeronautical field, the protocol also considers the current state of the art and the principles of orderly elimination, allowing the temporary use of the HALON extinguishing agent, but the production of the HALON extinguishing agent has been prohibited due to the international societal legislation on the protection of the ozone layer, and therefore the work of replacing the HALON extinguishing system in the aeronautical field is also reluctant. Meanwhile, the European Union also clearly stipulates that a new application of TC for a cargo hold fixed fire extinguishing system of an aircraft is not allowed to use HALON fire extinguishing agents from EASA in 2018, 12 and 31 days later.
Under the environment of protecting the ozone layer, the development of HALON to replace the environmental-friendly fire extinguishing agent is also in progress. The current potential of the catalyst is better, and the catalyst comprises halogenated hydrocarbons, superfine dry powder, inert gases, water mist and the like. The water mist is favored as one of HALON to replace environment-friendly fire extinguishing agents due to the characteristics of high cleaning efficiency, no pollution, small damage and the like.
Various systems and methods have been developed in the industry for the various alternative HALON schemes described above, such as:
JP06096124B2 (HYBRID TYPE cart-composite FIRE extinguishing agent distributor DISCHARGE RELEASE SYSTEM) provides a HYBRID CARGO space FIRE extinguishing agent distribution system and method. The mixed cargo fire suppression agent distribution system includes at least a vehicle plumbing installation that can distribute at least one fire suppression agent. Furthermore, the primary fire extinguishing supply source device is integrated with the vehicle piping arrangement and can provide a high volume flow of the primary fire extinguishing agent. The system and apparatus are primarily intended for use in fire suppressant management devices within vehicles and do not address the substitution of HALON fire suppressant.
CN209967489U relates to a two-pass low-pressure fluid atomizer, which provides a two-pass low-pressure fluid atomizer comprising at least: gas passage, liquid passage, gyration cavity and water smoke export belong to the fire control field, relate to a high efficiency, energy-conserving, environmental protection's fire control shower nozzle. The spray head can atomize liquid into fine particles, so that low-energy-consumption and high-efficiency atomization of the liquid is realized. The sprinkler is not directed to a complete cargo hold fire suppression system that replaces the HALON fire suppression agent.
EP1547651B1 "fire suppression system FOR aircraft CARGO HOLD having TWO CONTAINERS FOR discharging FLUID and a filter CONNECTED TO a CONTROL valve TO release FLUID INTO the CARGO HOLD SPACE (FIRE FIGHTING SYSTEM FOR HOLD OF AIRCRAFT HAS TWO continuous FOR extending FLUID flow AND FILTER CONNECTED TO CONTROL VALVES RELEASING FLUID across SPACE contacting tag) proposes an integrated fire suppression system FOR aircraft CARGO HOLD, in particular flooding the CARGO HOLD with liquid or foam. A fire extinguishing system installed on an aircraft is provided with two containers for extinguishing liquid. If a fire is detected, the first container is pressurized, fluid flows until the container is empty, and then a valve opens to allow liquid to flow from the second container into the cargo space. Clearly, this prior art does not relate to a complete cargo hold fire suppression system that replaces the HALON fire suppression agent.
CN112316350A relates to a water base verification system platform that is applied to fire suppression in large-scale civil aircraft cargo hold, and this prior art includes standard experiment cabin, thin water smoke generating device and control module, thin water smoke generating device is located in the standard experiment cabin. The water-based verification system platform is used for simulating the fine water mist suppression of the cargo compartment fire alarm, but is not connected with and configured in the practical application scene of the aircraft cargo compartment, so that the water-based verification system platform cannot be used as an integral cargo compartment fire extinguishing system for replacing the traditional HALON fire extinguishing agent.
CN212187528U relates to a water mist fire fighting device for a helicopter, which utilizes water consumption of water mist and improves fire extinguishing efficiency, reduces the number of times of descending and storing water of the helicopter, but does not relate to a fire extinguishing system in a cargo hold of an airplane.
Disclosure of Invention
In view of the above situation in the prior art, the invention provides a water mist fire extinguishing system and method for an aircraft cargo hold, which utilizes the existing water resource and pressure gas source on the aircraft to replace the traditional HALON fire extinguishing agent to realize efficient fire extinguishing in the cargo hold controlled by a cockpit.
Therefore, the invention provides a water mist fire extinguishing system for an aircraft cargo hold, which comprises an onboard water source, one or more onboard air sources, a cargo hold fire extinguishing pipeline, a fire extinguishing system control device and a cockpit fire extinguishing control unit, and is characterized by further comprising:
the onboard water source is connected to a water source pipeline of the cargo compartment fire extinguishing pipeline, the onboard air source is connected to an air source pipeline of the cargo compartment fire extinguishing pipeline, and the cargo compartment fire extinguishing pipeline extends into the cargo compartment and comprises a plurality of double-fluid fire extinguishing nozzles;
a first power distribution unit for controlling the on-board water source;
a second power distribution unit for controlling the onboard air supply;
a third power distribution unit for controlling the cargo compartment fire suppression piping;
the first power distribution unit, the second power distribution unit and the third power distribution unit are controlled by the cockpit fire extinguishing control unit.
The technical problems to be solved by the application of the water mist fire extinguishing system in the cargo hold of the civil aircraft are mainly solved by the scheme of the invention: in order to solve the technical problem, the water source can be taken from an existing water source (such as a water tank of a water wastewater system) on the airplane, and the air source can be taken from an existing air source (such as engine bleed air or APU bleed air) on the airplane.
Meanwhile, the invention also provides a water mist fire extinguishing method for the cargo hold of the airplane, which comprises an onboard water source, one or more onboard air sources, a cargo hold fire extinguishing pipeline, a fire extinguishing system control device and a cockpit fire extinguishing control unit, and is characterized by further comprising the following steps:
connecting the onboard water tank to a water source pipeline of the cargo compartment fire suppression pipeline, connecting the onboard air source to an air source pipeline of the cargo compartment fire suppression pipeline, extending the cargo compartment fire suppression pipeline into the cargo compartment and providing a plurality of dual-fluid fire suppression nozzles;
providing a first power distribution unit for controlling the on-board water source;
providing a second power distribution unit for controlling the onboard air supply;
providing a third power distribution unit for controlling the cargo compartment fire suppression piping;
and the first power distribution unit, the second power distribution unit and the third power distribution unit are controlled by the cockpit fire extinguishing control unit.
By means of the system and method of the present invention, the present invention provides an integrated cargo compartment fire suppression system that can replace HALON fire suppression agents, meeting the latest environmental requirements of ICAO and EASA; and the two fluids required by the fine atomized water can be taken from the civil aircraft airborne system (water wastewater system and air source system), so that the fire extinguishing cost can be effectively reduced, and the influence of the onboard replacement of the fine atomized fire extinguishing system on the aircraft configuration can be reduced to the greatest extent.
Brief Description of Drawings
FIG. 1 is a schematic structural diagram of a water mist fire suppression system of an aircraft cargo hold of the present invention;
FIG. 2 is a schematic flow diagram of the operation of the fire suppression system of FIG. 1 utilizing the present invention.
Detailed Description
As shown in fig. 1, the present invention provides a water mist fire suppression system for an aircraft cargo hold, comprising an onboard water source having a tank 1, the tank 1 comprising an outlet flap 101. The water source on the aircraft can come from a special fire-extinguishing water tank on the aircraft, and can also be other water tanks existing on the aircraft, such as a water tank of an onboard wastewater system, so that the requirement of the civil aircraft on strict weight control can be met without additionally increasing the water source. Meanwhile, because the cargo hold often has certain distance or difference in height from the onboard water tank, in order to realize timely release of the fire extinguishing water source, the onboard water source also comprises a supercharging device, so that sufficient pressure in the water tank can be timely discharged under the condition of the fire of the cargo hold, and finally, the water mist is quickly released into the cargo hold. A pressure sensor (not shown) is installed in the water tank 1 to monitor the internal pressure of the water tank in real time.
In one embodiment, the aforementioned pressurization device can be implemented by an onboard air source 2, which is an onboard air source, for example, including engine bleed air and APU bleed air, and is led out to the water tank 1 through an air source pipeline 201 to pressurize the water tank 1. However, it is understood that the pressurizing device may be a mechanical pressurizing pump (not shown) to pressurize the water in the water tank 1.
The water tank 1 is pressurized to normal working pressure P by continuously introducing air1This pressure ensures that the water flow required for normal operation of the fire suppression system is provided after the tank outlet valve 101 is opened. The water tank can be further provided with a pressure relief device (not shown in the figure), when the internal pressure of the water tank 1 is greater than a set threshold value P2When the pressure relief device is used, the pressure relief device is automatically opened to release pressure, so that the water tank is prevented from being damaged due to overhigh internal pressure. Meanwhile, the water tank 1 is also provided with a heating device 104 for controlling the internal temperature of the water tank to be normalOperating temperature T1Therefore, water in the aircraft operation environment is prevented from being frozen to prevent the fire extinguishing system from working normally.
The present invention further includes a first power distribution unit 102 for controlling a water source supply fire suppression system on a machine, the first power distribution unit 102 upon receiving a command may supply power to an outlet valve 101 on the tank 1 to open the outlet valve so that water in the tank 1 may flow out through a water source line 103, the water source line 103 being in communication with a cargo compartment fire suppression line 3 leading to a cargo compartment.
The onboard air supply 2 of the present invention has one or more for directly supplying air to the cargo hold fire suppression piping 3 in addition to pressurizing the water tank 1. In one embodiment, the air supply line 201 is connected to the fire-extinguishing line 3 of the cargo compartment in addition to pressurizing the water tank 1, and a bleed pressure regulating valve 202 is provided on the line 201, and a second power distribution unit 203 for controlling the supply of an air supply from the machine supplies power to the bleed pressure regulating valve 202 on the air supply line 201 to open the bleed pressure regulating valve. The bleed air pressure regulating valve 202 can automatically regulate bleed air pressure when the pressure of the air source pipeline 201 changes, so that the bleed air pressure is not lower than P3This pressure provides the gas phase pressure required for proper operation of the fire suppression system.
Because the temperature of the bleed air of the on-board engine or the APU is often higher, in order to solve the problem of the temperature applicability of the 'air source', for example, the bleed air can not be directly used after the temperature of the boiling point of water is exceeded, a heat exchanger 204 can be further arranged on the downstream pipeline of the 'on-board air source', namely the air source pipeline 201, and the temperature of the high-temperature air source can be reduced to the proper temperature.
The fire extinguishing piping 3 extends into the cargo compartment 4 and a plurality of two-fluid fire extinguishing nozzles 301, which may preferably be two-fluid supersonic fire extinguishing nozzles for better water atomization, are provided on the piping 3 in the cargo compartment 4. When there are a plurality of cargo tanks, such as the embodiment shown in fig. 1 comprising two cargo tanks 4, the fire-extinguishing line 3 can branch into these two cargo tanks. It will also be appreciated by those skilled in the art that the cargo compartment fire suppression lines 3 may be configured according to the actual number of cargo compartments on board the aircraft to ensure that each cargo compartment has a water mist fire suppression system according to the present invention disposed therein.
A control valve 302 is also provided in the cargo hold fire suppression pipeline 3 and is powered by a third power distribution unit 303, and the valve is opened to form a fire suppression path.
The fire extinguishing system for the aircraft cargo hold according to the invention further comprises a fire extinguishing system control device 5, which device 5 is connected to an onboard avionics network 6 and can give an alarm indication to a cockpit fire extinguishing control unit 7 in the cockpit, which is operated by the pilot.
The operation of the cargo compartment fire suppression system of the present invention will be illustrated with reference to fig. 2 below:
when the cargo hold 4 generates fire smoke, a smoke detector in the cargo hold sends a smoke alarm signal after detecting the smoke, the fire extinguishing system control device 5 receives the alarm signal and transmits the alarm signal to the fire extinguishing control unit 7 in the cockpit through the avionic network 6, and a pilot operates a fire extinguishing switch of the designated cargo hold to execute a cargo hold fire extinguishing program after receiving an alarm instruction.
The fire suppression system performs a cargo compartment fire suppression procedure (e.g., via the cockpit fire suppression control unit 7 or via the fire suppression system control 5) to send a fire suppression signal Si to the first power distribution unit 102, the second power distribution unit 203, and the third power distribution unit 303. The outlet shutter 101 of the onboard water tank 1 is supplied with power from the first power distribution unit 102, and the outlet shutter 101 is opened to discharge the water flow.
In order to ensure that the discharged water flow can meet the state required by the normal work of the fire extinguishing system, a pressure sensor is arranged in the water tank 1 and used for monitoring the internal pressure of the water tank 1 in real time. The water tank 1 can be continuously pressurized to P by air-entraining from a pressurizing device, such as an onboard air source 21This pressure ensures that the tank outlet valve 101 provides the water flow required for normal operation of the fire suppression system after opening. The water tank 1 can also be provided with a pressure relief device, when the internal pressure of the water tank 1 is greater than a set threshold value P2When the pressure relief device is used, the pressure relief device is automatically opened to release pressure, so that the water tank is prevented from being damaged due to overhigh internal pressure. Meanwhile, a heating device 104 is arranged on the water tank 1 to control the internal temperature of the water tank to be T1Therefore, water in the tank can not be frozen in the normal operation environment of the airplane, and the normal work of the fire extinguishing system is prevented. When the internal pressure of the water tank is reduced to be less than P1The fire extinguishing system control device 5 will be in the cockpitAnd (4) giving an alarm indication of low pressure of the water outlet tank to prompt a pilot of system faults. For example, the pilot may perform a pressurization operation, and the bleed air pressure regulating flap 202 on the air supply line 201 may be supplied with power from the second power distribution unit 203, the flap being opened, and the high-pressure bleed air is first cooled by the heat exchanger 204 and then led to the tank to pressurize the water in the tank 1. The bleed pressure regulating valve 202 can automatically regulate bleed pressure when the pressure of the air source pipeline changes, so that the bleed pressure is not lower than P3This pressure provides the gas phase pressure required for proper operation of the fire suppression system.
Meanwhile, when the second power distribution unit 203 receives the fire extinguishing signal Si, the second power distribution unit 203 supplies power to the bleed air pressure regulating valve 202 on the air source pipeline 201, the valve 202 is opened, the high-pressure bleed air is firstly cooled through the heat exchanger 204, and the air is supplied to the cargo compartment fire extinguishing pipeline 3 through the air source pipeline 201.
When receiving the fire extinguishing signal Si, the third power distribution unit 303 controls the valve 302 to supply power, and opens the valve to form a fire extinguishing path. After the outlet valve 101 of the water tank 1 is opened, water is driven by the water supply pressure to enter the fire extinguishing piping 3 through the water supply piping 103 to reach the plurality of fire extinguishing nozzles 301 located in the cargo hold 4. After the air-bleed pressure-regulating valve 202 on the air source pipeline 201 is opened, the air source enters the fire-extinguishing pipeline 3 through the air source pipeline and reaches the fire-extinguishing nozzle 301 of the cargo compartment. At this time, water is atomized by the two-fluid supersonic nozzle 301 under the action of high-pressure bleed air to form fine water mist droplets (generally less than 200 μm) with small particle size meeting the requirements. By releasing the water mist in the cargo compartment 4, extinguishing and suppression of a fire in the cargo compartment is achieved.
In addition, because the use scenes of an onboard 'air source' and a onboard 'water source' are various, the use conditions of the 'air source' and the 'water source' cannot be reflected through source parameter change, and the water flow sensor 106 and the pressure sensor 105 as well as the air flow sensor 206 and the pressure sensor 205 are respectively arranged on the water source pipeline 103 between the water tank 1 and the cargo hold fire-extinguishing pipeline 3 and the air source pipeline 201 between the onboard air source 2 and the cargo hold fire-extinguishing pipeline 3 to respectively feed back the release conditions of the 'water source' and the 'air source', so that a pilot can be helped to better know the actual fire-extinguishing implementation condition. For example, a fire suppression system will indicate a fault when the flow or pressure of water is below a threshold, or when the gas pressure is below a threshold.
With the fire suppression system of the present invention described above in connection with the specific embodiments, it will be appreciated by those skilled in the art that the present invention has the following advantages over the prior art:
1) the water mist fire extinguishing system belongs to a cargo compartment environment-friendly fire extinguishing system, and meets the latest environment-friendly requirements of ICAO and EASA;
2) the two fluids required by the finely atomized water in the fire extinguishing system can be obtained from a civil aircraft airborne system (a wastewater system and an air source system) without adopting an additional fire extinguishing agent, so that the fire extinguishing cost can be effectively reduced;
3) the two fluids required by the water mist in the fire extinguishing system can be taken from the airborne system (a wastewater system and an air source system) of the civil aircraft, so that the influence of the onboard replacement of the water mist fire extinguishing system on the configuration of the aircraft can be reduced to the greatest extent.
Correspondingly, the invention also provides a water mist fire extinguishing method for the cargo hold of the airplane, which comprises one or more onboard water sources 1, one or more onboard air sources 2, a cargo hold fire extinguishing pipeline 3, a fire extinguishing system control device 5 and a cockpit fire extinguishing control unit 7, wherein the method further comprises the following steps: connecting the onboard water tank 1 to a water source pipeline 103 of the cargo compartment extinguishing pipeline 3, connecting the onboard air source 2 to an air source pipeline 201 of the cargo compartment extinguishing pipeline 3, extending the cargo compartment extinguishing pipeline 3 into the cargo compartment 4 and providing a plurality of two-fluid water mist nozzles 301; providing a first power distribution unit 102 for controlling the onboard water tank 1; providing a second power distribution unit 203 for controlling the onboard air supply 2; providing a third power distribution unit 303 for controlling the cargo compartment fire suppression pipeline 1; the first power distribution unit 102, the second power distribution unit 203, and the third power distribution unit 303 are controlled by the cockpit fire extinguishing control unit 7.
Although the invention has been described with reference to the accompanying drawings and examples, it will be understood by those skilled in the art that any variations or modifications which fall within the spirit of the invention and equivalents of the specific features described herein may be made without departing from the scope of the invention as defined in the appended claims.
Claims (11)
1. The utility model provides an aircraft cargo hold water mist fire extinguishing system, includes one or more on-board water source, one or more on-board air supply, cargo hold fire extinguishing pipeline, fire extinguishing systems controlling means, cockpit fire extinguishing control unit, its characterized in that still includes:
the onboard water source comprises a water source pipeline connected to the cargo compartment fire-extinguishing pipeline, the onboard air source comprises an air source pipeline connected to the cargo compartment fire-extinguishing pipeline, and the cargo compartment fire-extinguishing pipeline extends into the cargo compartment and comprises a plurality of dual-fluid fire-extinguishing nozzles;
a first power distribution unit for controlling the on-board water source;
a second power distribution unit for controlling the onboard air supply;
a third power distribution unit for controlling the cargo compartment fire suppression piping;
the first power distribution unit, the second power distribution unit and the third power distribution unit are controlled by the fire extinguishing control unit of the fire extinguishing cockpit.
2. An aircraft cargo bay water mist fire suppression system as defined in claim 1, wherein the one or more onboard water sources comprise a tank, the tank including an outlet flap, the first power distribution unit controlling the outlet flap.
3. An aircraft cargo hold water mist fire suppression system as defined in claim 2 wherein said tank further comprises a pressure boosting device and a pressure relief device, said pressure boosting device being comprised of one of said one or more on-board air sources and said air source line being connected to said tank, or said pressure boosting device being comprised of a mechanical booster pump.
4. An aircraft cargo hold water mist fire suppression system as defined in claim 2 wherein said tank includes a warming means therein.
5. An aircraft cargo hold water mist fire suppression system as defined in claim 2 wherein a water flow sensor and a pressure sensor are provided on said water source line between said tank and said cargo hold fire suppression line.
6. An aircraft cargo bay water mist fire suppression system as defined in claim 1, wherein a bleed air pressure regulating flap is provided on the air supply line, the second power distribution unit controlling the bleed air pressure regulating flap.
7. An aircraft cargo hold water mist fire suppression system as defined in claim 6 wherein a heat exchanger is mounted on the air supply line.
8. An aircraft cargo hold water mist fire suppression system as defined in claim 7 wherein a gas flow sensor and a pressure sensor are provided on said gas source line between said on-board gas source and said cargo hold fire suppression line.
9. The water mist fire suppression system for an aircraft cargo bay of claim 1, wherein a control valve is further provided on the fire suppression circuit for the cargo bay, and the third power distribution unit controls the control valve.
10. An aircraft cargo hold water mist fire suppression system as defined in claim 1 wherein said fire suppression system control means transmits a warning signal via an aircraft avionics network and provides a warning indication to said cockpit fire suppression control unit.
11. The fine water mist fire extinguishing method for the cargo hold of the airplane comprises an onboard water source, one or more onboard air sources, a cargo hold fire extinguishing pipeline, a fire extinguishing system control device and a cockpit fire extinguishing control unit, and is characterized by further comprising the following steps of:
connecting the onboard water tank to a water source pipeline of the cargo compartment fire suppression pipeline, connecting the onboard air source to an air source pipeline of the cargo compartment fire suppression pipeline, extending the cargo compartment fire suppression pipeline into the cargo compartment and providing a plurality of dual-fluid fire suppression nozzles;
providing a first power distribution unit for controlling the on-board water source;
providing a second power distribution unit for controlling the onboard air supply;
providing a third power distribution unit for controlling the cargo compartment fire suppression piping;
and the first power distribution unit, the second power distribution unit and the third power distribution unit are controlled by the cockpit fire extinguishing control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950535.5A CN113616954A (en) | 2021-08-18 | 2021-08-18 | Water mist fire extinguishing system and method for aircraft cargo compartment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950535.5A CN113616954A (en) | 2021-08-18 | 2021-08-18 | Water mist fire extinguishing system and method for aircraft cargo compartment |
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| Publication Number | Publication Date |
|---|---|
| CN113616954A true CN113616954A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110950535.5A Pending CN113616954A (en) | 2021-08-18 | 2021-08-18 | Water mist fire extinguishing system and method for aircraft cargo compartment |
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| CN (1) | CN113616954A (en) |
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Application publication date: 20211109 |