This application discloses an invention which is related, generally and in various embodiments, to a fire suppression module, a modular system which includes the fire suppression module, and a method for installing the modular system on a vessel, configured for containing a flammable material.
In a safety conscious society, the desirability of effective fire suppression systems for use with vessels containing flammable materials is understandable. This desirability extends to many military applications, where the vessels/fuel tanks of various military vehicles can contain large quantities of flammable fuel and are subject to hostile attacks.
One approach which has been utilized to try to minimize the damage caused by vehicle fires is the use of a passive fire suppression system. When used in connection with vessels/fuel tanks, the passive fire protection systems typically rely on “blankets” or “hard panels” to contain or slow the spread of a fire. Both the “blanket” passive fire suppression systems and the “hard panel” fire suppression systems are generally manufactured to specific sizes and constructions based on the particular vessel the systems are to be utilized with.
Because such systems are designed for a specific vessel, adapting the systems for use with other vessel tends to be relatively difficult and expensive, even if only minor changes are needed. This is especially true for applications which require installation in the field.
Various embodiments of the invention are described herein in by way of example in conjunction with the following figures, wherein like reference characters designate the same or similar elements.
It is to be understood that at least some of the figures and descriptions of the invention have been simplified to illustrate elements that are relevant for a clear understanding of the invention, while eliminating, for purposes of clarity, other elements that those of ordinary skill in the art will appreciate may also comprise a portion of the invention. However, because such elements are well known in the art, and because they do not facilitate a better understanding of the invention, a description of such elements is not provided herein.
As shown in
The fire suppressant 12 may be any suitable type of fire suppressant. For example, according to various embodiments, the fire suppressant 12 is a dry fire retardant powder which includes, for example, one or more of the following: sodium bicarbonate, potassium bicarbonate, potassium chloride, potassium sulfate, monoammonium phosphate, and the like. As shown in
The base member 14 may be fabricated in any suitable size and shape. For example, according to various embodiments, the base member 14 is a square-shaped base having four sides which are each on the order of approximately four inches in “length”. According to other embodiments, the base member 14 may be rectangular-shaped, triangular-shaped, circular-shaped, etc. The base member 14 may also be fabricated from any suitable material. For example, according to various embodiments, the base member 14 is fabricated from an acrylic, an acrylonitrile butadiene styrene (ABS), a polyvinyl chloride (PVC), a polyurethane, a nylon, a composite material, etc. According to various embodiments, as described in more detail hereinbelow with respect to
The cap member 16 may be fabricated in any suitable size, shape and color. In general, the footprint of the cap member 16 substantially corresponds to the footprint of the base member 14. Therefore, it will be appreciated that according to various embodiments, the cap member 16 has a square-shaped footprint where each of the four sides have a “length” on the order of approximately four inches. According to other embodiments, the footprint of the cap member 16 may be rectangular-shaped, triangular-shaped, circular-shaped, etc.
The “height” of the cap member 16 may be any suitable height. In general, the “height” of the cap member 16 is sized based on the amount of fire suppressant 12 which will be positioned within the enclosure 20 formed by the base member 14 and the cap member 16. For example, for the embodiments where the cap member 16 has a square-shaped footprint where each of the four sides nave a “length” on the order of approximately four inches, the cap member 16 may have a “height” on the order of approximately three inches if the enclosure 20 formed by the base member 14 and the cap member 16 is to hold approximately one pound of sodium bicarbonate. Of course, it is understood that according to other embodiments, the “height” of the cap member 16 can be more or less than approximately three inches based on the amount of fire suppressant 12 which will be positioned within the enclosure 20.
The cap member 16 may be fabricated from any suitable material. For example, according to various embodiments, the cap member 16 is fabricated from an acrylic, an ABS, a PVC, a polyurethane, a nylon, a composite material, etc. In general, higher tensile modulus materials (e.g., greater than 250,000 PSI) will perform better during destructive events. Additionally, materials having a higher impact resistance will provide better longevity when exposed to external elements.
The cap member 16 may also include or incorporate one or more stress risers 23 (not shown in
According to various embodiments, the fire suppression module 10 may be a weather resistant fire suppression module 10. Although not shown, for such embodiments, a sealant, a gasket, a system of gaskets, etc. may be positioned between the cap member 16 and the base member 14, between the cap member 16 and any corresponding straps 18, and between the base member 14 and any corresponding straps 18 in order to provide the weather resistance to the fire suppression module 10 and/or prevent or minimize any undesired water or moisture from accumulating in the enclosure 20 formed by the base member 14 and the cap member 16. According to other embodiments, in order to provide the weather resistance to the fire suppression module 10 and/or prevent or minimize any undesired water or moisture from accumulating in the cap member 16, loose or unpackaged fire suppressant 12 may be sealed within the cap member 16 as described in more detail hereinbelow with respect to
The cap assembly 26 includes the cap member 10, a cap floor member 28, and a plug member 30. The cap floor member 28 defines an opening 32 therethrough, and is connected to the cap member 16 to form a sub-enclosure 34. The cap floor member 28 may be connected to the cap member 16 in any suitable manner. For example, according to various embodiments, the cap floor member 28 may be welded, adhered or mechanically sealed to the cap member 16. The cap floor member 28 may be fabricated from any suitable material. For example, according to various embodiments, the cap floor member 28 is fabricated from an acrylic, an ABS, a PVC, a polyurethane, a nylon, a composite material, etc. According to various embodiments, the cap member 16 and the cap floor member 28 are integral with each other (formed as a single component).
For the embodiments shown in
For the embodiments shown in
According to other embodiments of the fire suppression module 10 of
According to yet other embodiments of the fire suppression module 10 of
As shown in
The straps 18 are flexible straps and may be fabricated from any satiable material. For example, according to various embodiments, the straps 18 are fabricated from a metal, a plastic, a rubber, a composite material, etc. The straps 18 are arranged to form a pattern or matrix over the fuel tank 42. According to various embodiments, the respective straps 18 may be sewn, adhered, bonded, welded, etc. to one another to create a strapping or webbing which is positioned, over the fuel tank 42. For example, any overlap formed by a given strap 18 and any other intersecting strap 18 may be sewn together, adhered together, bonded together, welded together, etc. According to various embodiments, at least some of the straps 18 have two loose ends which are not sewn to, adhered to, bonded to, welded to, etc. another strap 18. According to other embodiments, at least some of the straps 18 have one loose end which is not sewn to, adhered to, bonded to, welded to, etc. another strap 18. In general, the pattern or matrix formed by the straps 18 allows for a desired placement of the fire suppression modules 10 over the fuel tank 42. Although the pattern shown in
According to various embodiments, when a given fire suppression module 10 is installed over the fuel tank 42, portions of a plurality of the individual straps 18 (e.g., portions of four straps 18) are positioned over the base member 14 of the fire suppression module 10, under the associated fire suppressant 12, and within the enclosure 20 formed by the base member 14 and the cap member 16 of the given fire suppression module 10 (See
As shown in
It is anticipated that the system 40 may be utilized for vehicles such as amphibious vehicles. For such applications, it will be appreciated that when the vehicle is in the water, the fire suppression modules 10 can create a buoyant effect, causing an upward force (exerted by the water) that opposes the weight of the vehicle. For instances where a significant number of the fire suppression modules 10 are utilized, the buoyant effect may increase the vehicle's ability to float in the water.
For embodiments where at least some of the straps 18 have loose ends, the system 40 includes a plurality of attachment members 44. The attachment members 44 may be any suitable type of attachment members 44 and are utilized with the loose ends of the straps 18 to “close up” the mesh of straps 18 covering the fuel tank 42. For example, according to various embodiments, where a given strap 18 has two loose ends, a given attachment member 44 includes two double D-rings (or a similar arrangement), where each double D-ring is configured to receive a respective loose end of the given strap 18. For a first loose end of the given strap 18, the first loose end may be passed through a first set of the double D-rings in a first direction (first through a first D-ring then through a second D-ring), then after the D-rings are separated from one another, the loose end of the given strap 18 may be passed over the top of the second D-ring and back through the first D-ring in a direction opposite the first direction, then pulled to a desired tightness. Similarly, for a second loose end of the given strap 18, the second loose end may be passed through a second set of the double D-rings in a first direction (first through a first D-ring then through a second D-ring), then after the D-rings are separated from one another, the loose end of the given strap 18 may be passed over the top of the second D-ring and back through the first D-ring in a direction opposite the first direction, then pulled to a desired tightness.
According to other embodiments, where a given strap 18 has two loose ends, a given attachment member 44 may include a double D-ring (or similar arrangement) connected to one loose end of the given strap 18 as described above and a hook member or similar member connected to the other loose end of the given strap 18. For such embodiments, the hook member may be utilized to “close up” the mesh of straps 18 covering the fuel tank 42 by hooking one or more of the straps 18 of the mesh of straps 18 (e.g., by pulling the hook to place the hook over an intersection of straps 18, into an open area of the mesh, and over an opposite side of the intersection). The hook member may be connected to the other loose end of the given strap 18 in any suitable manner. For example, according to various embodiments, the other loose end of the given strap 18 may be passed through an opening in the hook member in a first direction, be looped around the opening and taken back in a second direction, and then be fastened to, sewn to, bonded to, welded to, etc. a portion of the given strap 18.
According to various embodiments, only one end of a given strap 18 is a loose end. For such embodiments, a hook member or similar member may be connected to the loose end of the given strap 18, and the hook member may be utilized to “close up” the mesh of straps 18 covering the fuel tank 42 as described hereinabove.
According to various embodiments, in addition to being connected to at least one end of a given snag 18, a given attachment member 44 may also be connected to the fuel tank 42. For such embodiments, the given attachment member 44 may be connected to the fuel tank 42 in any suitable manner. For example, the attachment member 44 may be hooked onto the fuel tank 42, fastened to the fuel tank 42, bonded to the fuel tank 42, welded to the fuel tank 42, etc.
According to various embodiments, the system 40 may include connectors (not shown for purposes of simplicity) in lieu of at least some of, if not all of, the straps 18 and attachment members 44. For such embodiments, the connectors may be utilized to connect adjacent fire suppression modules 10 to one another to create a pattern or matrix of fire suppression modules 10 over the feel tank 42. Such connectors may be embodied as any suitable type of connector. For example, according to various embodiments, the connectors may be pre-molded or fabricated connectors, tensioner, buckle, connector module-to-module connectors, D-loops attached to each fire suppression module 10, etc. Such connectors may be connected to the respective fire suppression modules 10 in any suitable manner. For example, such connectors may be fastened, adhered, bonded, welded, etc. to the respective fire suppression modules 10.
According to various embodiments, the system 40 may also include one or more strap tensioner compensators 46. Various embodiments of the strap tensioner compensators 46 are shown in
In view of the above, it will be appreciated that the system 40 is essentially a modular system, utilizing one or more embodiments of individual fire suppression modules 10 to easily construct a customized fire suppression system for any size and shape of fuel tank 42. The flexibility afforded by the modularity of the system 40 makes the system 40 especially suitable for field applications where the fuel tank 42 is already installed on a vehicle.
The process starts at block 52, where the straps 18 are positioned over the fuel tank 42. According to various embodiments, the strapping or webbing may be pulled over the fuel tank 42 much like in the manner a sock is pulled over a foot.
From block 52, the process advances to block 54, where a base member 14 (or at least a portion of a fire suppression module 10) is positioned under the strapping or webbing at a location over the fuel tank 42. According to various embodiments, the strapping or webbing is flexible enough to allow the strapping or webbing to be pulled away from the fuel tank 42 (or adjacent straps apart from one another) a sufficient distance to allow the base member 14 to be positioned under the strapping or webbing and over the fuel tank 42. The base member 14 may correspond to an individual cap member 16, or may be a common base member 14 which corresponds to a plurality of cap members 16 or to a common cap member 16. For embodiments where the method 50 is utilized for installing the fire suppression system 40 which includes the fire suppression modules 10 of
From block 54, the process advances to block 56, where an individual package of fire suppressant 12 is positioned over the portions of the strapping or webbing which is positioned over the base member 14. For embodiments where the base member 14 is a common base 14 configured to be connected to a plurality of cap members 16, a plurality of individual packages of fire suppressant 12 are positioned over the base member 14. For embodiments where the method 50 is utilized for installing the fire suppression system 40 which includes the fire suppression modules 10 of
From block 56, the process advances to block 58, where a cap member 16 is positioned over an individual package of fire suppressant 12 and is connected at a corresponding base member 14. For embodiments where the base member 14 is a common base member 14 configured to be connected to a plurality of cap members 16, the respective cap members 16 are positioned over the corresponding individual packages of fire suppressant 12 and are connected to the common base member 14. For embodiments where the base member 14 is a common base member 14 configured to be connected to a common cap member 16, the common cap member 16 is positioned over the corresponding individual packages of fire suppressant 12 and is connected to the common base member 14. Each cap member 16 may be connected to the base member 14 by fasteners 20, by snap-fit, by an adhesive, etc. For embodiments where the method 50 is utilized for installing the fire suppression system 40 which includes the fire suppression modules 10 of
Once all of the fire suppression modules 10 have been installed, the process advances from block 58 to block 60, where the respective attachment members 44 are connected to one or more of the following to “close up” the mesh of straps 18 covering the fuel tank 42 and complete the installation of the system 40: (1) any remaining loose ends of the straps 18; (2) one or more of the straps 18 is of the mesh of straps 18, and/or (3) the fuel tank 42. According to various embodiments, the attachment members 44 may be connected as set forth above prior to the installation of all of the fire suppression modules 10. For example, the attachment members 44 may be connected as set forth above alter a sufficient number of the fire suppression modules 10 have been installed.
Nothing in the above description is meant to limit the invention to any specific materials, geometry, or orientation of elements. Many part/orientation substitutions are contemplated within the scope of the invention and will be apparent to those skilled in the art. The embodiments described herein were presented by way of example only and should not be used to limit the scope of the invention.
Although the invention has been described in terms of particular embodiments in this application, one of ordinary skill in the art, in light of the teachings herein, can generate additional embodiments and modifications without departing from the spirit of, or exceeding the scope of, the described invention. For example, instead positioning one base member 14 then assembling the fire suppression module 10 associated with that base member 14 before positioning another base member 14, a plurality of base members 14 may be positioned before assembling the respective fire suppression modules 10 associated with the plurality of base members 14. Another example would be moving the “positioning of the straps 18” step described at block 42 to occur after the “positioning the cap member 16” step described at block 48. Yet another example would be fabricating the cap member 16 (or the can assembly 26) and the base member 14 as a single component. Accordingly, it is understood that the drawings and the descriptions herein are proffered only to facilitate comprehension of the invention and should not be construed to limit the scope thereof.
This application claims the benefit under 35 U.S.C. §119(e) of the earlier filing date of U.S. Provisional Patent Application No. 61/714,976 filed on Oct. 17, 2012.
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