Extinguishing a fire by pressurizing a tank containing an extinguishing liquid. According to the invention, the tank containing the liquid is provided with an expulsion outlet at a front end, a gas generator (17) is installed at a rear end, and a diaphragm forming an inflatable bag (19) is installed
Extinguishing a fire by pressurizing a tank containing an extinguishing liquid. According to the invention, the tank containing the liquid is provided with an expulsion outlet at a front end, a gas generator (17) is installed at a rear end, and a diaphragm forming an inflatable bag (19) is installed inside the tank, being folded prior to triggering in a confinement space at the front of the gas generator, the outlet from the generator being associated with a deflector (47) including a rearwardly-directed ejection passage (49).
대표청구항▼
1. A device for feeding a fire extinguishing liquid to an expulsion circuit for the fire extinguishing liquid, the device comprising: a tank containing the fire extinguishing liquid and provided with an expulsion outlet at a front end thereof;a gas generator installed inside the tank at a rear end t
1. A device for feeding a fire extinguishing liquid to an expulsion circuit for the fire extinguishing liquid, the device comprising: a tank containing the fire extinguishing liquid and provided with an expulsion outlet at a front end thereof;a gas generator installed inside the tank at a rear end thereof, the gas generator enclosed in a rigid confinement enclosure fastened to the tank, the gas generator includes a gas outlet;a diaphragm installed inside the tank to push back the fire extinguishing liquid towards the expulsion outlet under drive from a gas given off by the gas generator; anda deflector connected to the rigid confinement enclosure, and arranged between the rigid confinement enclosure and the diaphragm,wherein the diaphragm forms an inflatable bag connected in gastight manner to the gas outlet of the gas generator, the opening of the inflatable bag being directly fastened to the outside surface of the rigid confinement enclosure, the deflector being contained in the inflatable bag, the deflector includes an ejection passage for directing the gas given off by the gas generator rearwards of the tank and then to fill the inflatable bag, and the inflatable bag being folded prior to triggering of the gas generator in a confinement space defined by a cover and located inside the tank at a front of the gas generator. 2. The device according to claim 1, wherein the gas generator is a pyrotechnic gas generator emitting combustion gas. 3. The device according to claim 1, wherein the rigid confinement enclosure comprises a base fastened to the tank and a lid provided with a ring of exhaust holes, the deflector comprising an annular part fastened to the lid and provided with a rear skirt surrounding the ring of holes to define the rearwardly-pointing ejection passage. 4. The device according to claim 3, wherein the opening of the bag is fastened to the outside surface of the lid along a junction line situated between the base and the ejection passage. 5. The device according to claim 3, wherein the gas generator and the bag are enclosed, prior to triggering, in the above-mentioned cover, and wherein the cover has a breakable wall and is connected to the base in order to define the confinement space. 6. The device according to claim 5, wherein the cover is a thin casing having incisions encouraging it to splay open rearwards. 7. The device according to claim 5, wherein said cover is a thin metal casing. 8. The device according to claim 5, wherein the cover is made of flexible material. 9. The device according to claim 8, wherein flexible material is an elastomer. 10. The device according to claim 8, wherein the flexible material of the cover includes an outer protective metallic film coating. 11. The device according to claim 1, wherein the tank comprises a generally cylindrical body and fastener means suitable for positioning the body approximately horizontally, wherein the gas generator is fastened to a first end wall of the tank in an axial direction relative to the cylindrical body, and wherein the expulsion outlet is defined in the bottom portion of the body, in the vicinity of an opposite second end wall of the tank. 12. The device according to claim 1, wherein the inflatable bag has at least two compartments separated by a flow constriction system enabling the compartment closest to the ejection passage to be inflated on a priority basis. 13. An extinguisher comprising the device according to claim 1. 14. A variable-trim moving body comprising at least one extinguisher which includes at least one device according to claim 1. 15. An aircraft provided with at least one extinguisher comprising at least one device according to claim 1. 16. A device for feeding a fire extinguishing liquid to an expulsion circuit for the fire extinguishing liquid, the device comprising: a tank containing the fire extinguishing liquid and provided with an expulsion outlet at a front end thereof;a gas generator installed inside the tank at a rear end thereof; anda diaphragm installed inside the tank to push back the fire extinguishing liquid towards the expulsion outlet under drive from the gas given off by the gas generator;wherein the diaphragm forms an inflatable bag connected in gastight manner to a gas outlet of the gas generator, the bag being folded prior to triggering of the gas generator in a confinement space defined by a cover and located inside the tank at a front of the gas generator, and wherein the gas outlet is associated with a deflector comprising a generally annular ejection passage that is directed rearwards,the tank comprises a generally cylindrical body and fastener means suitable for positioning the body approximately horizontally,the gas generator is fastened to a first end wall of the tank in an axial direction relative to the cylindrical body,the expulsion outlet is defined in the bottom portion of the body, in the vicinity of an opposite second end wall of the tank, andthe two compartments in the folded state are held one against the other by a breakable connection extending along a non-closed line and situated essentially in the bottom portion of the tank. 17. The device according to claim 16, wherein the breakable connection is stitching. 18. The device according to claim 16, wherein the non-closed line is a circular arc substantially parallel with an edge of the bag in the folded state.
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이 특허에 인용된 특허 (5)
Monte Anthony J. (Utica MI), Fire suppression bladder system for fuel tanks.
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