Fire containment device

Abstract

To make it possible to extinguish a fire at an early stage in a fire convergence apparatus and in a fire convergence unit.SOLUTION: A fire convergence apparatus includes an incombustible sheet 11 capable of covering a fire occurrence site, and a bearing member 12 for supporting the incombustible sheet 11, and maintaining a dropping attitude of the incombustible sheet 11.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a fire extinguishing and converging device and method for extinguishing and converging a fire at the fire occurrence site.

Background Art

[0002] For example, when a fire breaks out at sea, in a forest, etc., a fire extinguishing agent is sprayed onto the sea, forest, etc. to extinguish the fire. When spraying a fire extinguishing agent onto the sea, forest, etc., for example, it is conceivable to spray the fire extinguishing agent from a helicopter or the like. However, with a helicopter, it is impossible to transport and spray a sufficient amount of the fire extinguishing agent, and it is difficult to extinguish the fire at an early stage. Therefore, for example, the fire extinguishing device described in Patent Document is a fire extinguishing agent containing an inorganic foaming agent that expands at a predetermined temperature, which is enclosed in a packaging container that can be ruptured by its expansion pressure, and reacts to the fire to scatter and diffuse the fire extinguishing agent together with the destruction of the packaging container.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The fire extinguishing device of Patent Document throws a packaging container filled with a fire extinguishing agent into a fire occurrence site such as the sea or a forest, and the fire extinguishing agent scatters and diffuses when the packaging container is destroyed. Even with such a configuration, in reality, the fire extinguishing agent is scattered and diffused at the fire occurrence site such as the sea or a forest, and it is impossible to spray a sufficient amount of the fire extinguishing agent, and there is a problem that it is difficult to extinguish the fire at an early stage.

[0005] The present disclosure solves the above-described problems, and an object thereof is to provide a fire extinguishing and converging device and method capable of converging a fire at an early stage.

Means for Solving the Problems

[0006] To achieve the above objective, the fire containment device of this disclosure comprises a non-combustible sheet capable of covering the site of a fire, and a support member that supports the non-combustible sheet and maintains the falling position of the non-combustible sheet.

[0007] Furthermore, the fire containment method of this disclosure includes the steps of: dropping a first non-combustible sheet in the shape of an umbrella in a closed state toward the site of the fire; opening the first non-combustible sheet upon landing to cover the site of the fire; and dropping a second non-combustible sheet, with a support plate fixed to its center, toward the area between at least a plurality of the first non-combustible sheets that have landed. [Effects of the Invention]

[0008] The fire containment device and method of this disclosure enable the early containment of a fire. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a schematic diagram showing a fire containment device according to the first embodiment. [Figure 2] Figure 2 is a schematic diagram showing the operating state of the fire containment device. [Figure 3] Figure 3 is a plan view showing the fire containment state by the fire containment device. [Figure 4] Figure 4 is a front view showing the fire containment state by the fire containment device. [Figure 5] Figure 5 is a schematic diagram showing a fire containment device according to the second embodiment. [Figure 6] Figure 6 is a schematic diagram showing the operating state of the fire containment device. [Figure 7] Figure 7 is a plan view showing the fire containment state by the fire containment device. [Figure 8] Figure 8 is a front view showing the fire containment state by the fire containment device. [Figure 9] Figure 9 is a front view illustrating the fire containment method of the third embodiment. [Figure 10] Figure 10 is a front view illustrating the method for extinguishing a fire. [Modes for carrying out the invention]

[0010] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. However, these embodiments do not limit the present disclosure, and where there are multiple embodiments, they may be combinations of these embodiments. Furthermore, the components in the embodiments include those readily conceivable by those skilled in the art, those that are substantially identical, and those that are equivalent.

[0011] [First Embodiment] <Fire containment device> Figure 1 is a schematic diagram representing the fire containment device of the first embodiment, and Figure 2 is a schematic diagram representing the operating state of the fire containment device.

[0012] A fire suppression device is used, for example, to quickly extinguish a fire at sea when a fire breaks out on an offshore oil field platform. In this case, the fire site is at sea where the fire has occurred, and crude oil, the source of the fire, is leaking into the sea. The fire suppression device extinguishes the fire by dropping it towards the sea where the fire is occurring and towards the offshore oil field platform. Note that the fire site is not limited to offshore oil field platforms, but can also be on land-based oil and natural gas drilling and refining facilities, or in forests or buildings.

[0013] As shown in Figures 1 and 2, the fire containment device 10 has an umbrella shape. The fire containment device 10 comprises a non-combustible sheet 11 and a support member 12.

[0014] The non-combustible sheet 11 is a sheet formed of a non-combustible film material (e.g., glass fiber, etc.) as a non-combustible material, and maintains airtightness without burning out for a certain period of time or more. The non-combustible sheet 11 has a circular shape. The non-combustible sheet 11 can be changed between a closed state (Fig. 1) folded so that air resistance is reduced during falling and an open state (Fig. 2) that spreads after falling. The non-combustible sheet 11 can cover the fire occurrence site when in the open state.

[0015] In addition, the non-combustible sheet 11 is preferably formed of a non-combustible film material and also formed of a thermoplastic member. When the non-combustible sheet 11 changes to the open state (Fig. 2) after falling, it is deformed by the heat generated at the fire occurrence site, and thus has a shape corresponding to the shape of the fire occurrence site, and covers so as to block the inflow of air from the outside to the fire occurrence site.

[0016] The support member 12 supports the non-combustible sheet 11. That is, the support member 12 supports the non-combustible sheet 11 in the closed state and the open state, and enables it to change between the closed state and the open state. That is, when the non-combustible sheet 11 falls, the support member 12 maintains the closed state which is the falling posture. Further, after the non-combustible sheet 11 has fallen, the support member 12 maintains the open state that covers the fire occurrence site.

[0017] Specifically, the support member 12 has a shaft portion 21, a plurality of bone portions 22, a fire extinguishing agent container 23, a fastener (restraint member) 24, and fins (vertical stabilizer plates) 25.

[0018] The shaft portion 21 has a cylindrical shape with a predetermined length. One end of the shaft portion 21 in the longitudinal direction is connected to the center of the non-combustible sheet 11. The multiple frame portions 22 have a predetermined length, and one end in the longitudinal direction is pivotably connected to one end of the shaft portion 21. The multiple frame portions 22 are arranged radially outward from the center of the non-combustible sheet 11, which is one end of the shaft portion 21. The multiple frame portions 22 are of the same length and are arranged at intervals (preferably equal intervals) in the circumferential direction of the non-combustible sheet 11. The other ends of the multiple frame portions 22 in the longitudinal direction protrude outward from the outer edge of the non-combustible sheet 11 and are connected to the non-combustible sheet 11. The non-combustible sheet 11 can change between a closed state and an open state by the pivoting of one end of the multiple frame portions 22 relative to one end of the shaft portion 21.

[0019] The fire extinguishing agent container 23 is provided at one end of the shaft portion 21. The fire extinguishing agent container 23 is mounted below the direction of fall of the non-combustible sheet 11. The fire extinguishing agent container 23 is constructed by filling the inside of the container body with fire extinguishing agent. When the fire containment device 10 falls onto the fire site, the fire extinguishing agent container 23 is shattered by the impact force, and the fire extinguishing agent inside is scattered. However, the fire extinguishing agent container 23 may be omitted depending on the fire situation at the fire site.

[0020] The fastener 24 functions as a restraining member for maintaining the non-combustible sheet 11 in a closed state. The fastener 24 has a rotating body 24a and a plurality of wings 24b. The rotating body 24a is rotatably supported on a threaded portion 21a formed at the other end of the shaft portion 21. The plurality of wings 24b are fixed around the rotating body 24a at circumferential intervals (preferably equal intervals). The non-combustible sheet 11 is biased and supported in an open state by the biasing force of a biasing member (not shown) provided on the shaft portion 21. The fastener 24 maintains the non-combustible sheet 11 in a closed state by restraining the other ends of the plurality of bone portions 22. The fins 25 function as vertical stabilizers for maintaining the fire containment device 10 in a vertical falling posture when it falls. The fins 25 are fixed on the other end side of the shaft portion 21, below the fastener 24. The fins 25 are fixed to the shaft portion 21 at intervals (preferably equal intervals) in the circumferential direction.

[0021] The fire containment device 10 maintains the non-combustible sheet 11 in a closed state by fasteners 24 that restrain the other ends of multiple frame parts 22. When the fire containment device 10 falls, the fasteners 24 rotate together with the rotating body 24a as multiple wings 24b receive wind, and move towards the other end of the shaft part 21. As a result, the restraint of the multiple frame parts 22 by the fasteners 24 is released, and the non-combustible sheet 11 changes from a closed state to an open state. The timing of the fasteners 24 releasing the restraint of the non-combustible sheet 11 and changing it to an open state may be during or after the fall of the fire containment device 10. In addition, during the fall, the fire containment device 10 maintains a falling posture along the vertical direction by multiple fins 25, allowing it to fall vertically to the target position.

[0022] However, the fastener 24 is not limited to this configuration. For example, it may be configured so that the restraint by the restraining member is released by the impact of falling into the fire scene, or by the heat of the fire scene acting on it during or after the fall to release the restraint by the restraining member.

[0023] <Methods for extinguishing a fire> Figure 3 is a plan view showing the fire containment state by the fire containment device, and Figure 4 is a front view showing the fire containment state by the fire containment device.

[0024] As shown in Figure 1, the fire containment device 10 is held in a closed state with the non-combustible sheet 11 closed by the support member 12. The fire containment device 10 is transported to the fire site 100 (see Figure 4) by being mounted on a drone or helicopter in the closed state. The fire containment device 10 is dropped towards the fire site 100 from the drone or helicopter in the closed state. The fire containment device 10 then descends towards the fire site 100 while remaining in the closed state, and when it lands at the fire site 100, the non-combustible sheet 11 is spread open by the support member 12 and held in an open state, as shown in Figure 2.

[0025] In other words, as shown in Figures 3 and 4, the fire site 100 is at sea 111, with oil 112 that has leaked onto the surface floating, and a fire 101 has occurred. The fire containment device 10, which falls in a closed state with the non-combustible sheet 11 closed, expands the non-combustible sheet 11 when it lands on the sea 111, or during its descent, and opens up, covering the fire 101 occurring at sea 111 from above. As a result, the fire containment device 10's non-combustible sheet 11, which has expanded in a circular shape, covers the fire 101, and the supply of air to the space covered by the non-combustible sheet 11 is cut off. Consequently, the fire 101 at sea 111 (oil 112) is extinguished due to oxygen deprivation, and the fire 101 is brought under control.

[0026] [Second Embodiment] <Fire containment device> Figure 5 is a schematic diagram representing the fire containment device of the second embodiment, and Figure 6 is a schematic diagram representing the operating state of the fire containment device. Components having the same functions as those in the first embodiment described above are denoted by the same reference numerals, and detailed explanations are omitted.

[0027] As shown in Figures 5 and 6, the fire containment device 30 comprises a non-combustible sheet 31 and a support member 32.

[0028] The non-combustible sheet 31 is a sheet formed from a non-combustible film material (for example, glass fiber) as a material that does not burn, and maintains airtightness without burning through for a certain period of time. The non-combustible sheet 31 is square in shape. However, the non-combustible sheet 31 is not limited to a square shape, but may be rectangular, polygonal, circular, elliptical, etc. The non-combustible sheet 31 can spread out after falling. When the non-combustible sheet 31 has spread out, it can cover the site of a fire.

[0029] Furthermore, it is desirable that the non-combustible sheet 31 be formed from a non-combustible film material and also from a thermoplastic material. When the non-combustible sheet 31 spreads out after falling, it deforms due to the heat generated at the fire site, taking on a shape that conforms to the shape of the fire site and covering the fire site in a way that isolates it from the outside.

[0030] Furthermore, the non-combustible sheet 31 may be configured to maintain a square shape at all times by fixing a rigid edge member 31b to its outer edge 31a.

[0031] The support member 32 supports the non-combustible sheet 31. Specifically, the support member 32 has a first support plate 41, a pair of second support plates 42 and 43, and a balloon (buoyancy-providing member, resistance member) 44. However, the balloon 44 may be omitted depending on the fire situation at the fire site.

[0032] The first support plate 41 is made of a steel member, a resin member, or the like. The first support plate 41 has a rectangular plate shape. The first support plate 41 is fixed to the upper central part of the non-combustible sheet 31 in the direction of fall. That is, the first support plate 41 is fixed to the central part of the upper surface of the non-combustible sheet 31.

[0033] The second support plates 42 and 43 are made of steel or resin. The second support plates 42 and 43 have a rectangular plate shape. The second support plates 42 and 43 are connected along a direction perpendicular to the first support plate 41. One of the second support plates 42 is rotatably connected to one end of the first support plate 41 in the longitudinal direction. The other second support plate 43 is rotatably connected to the other end of the first support plate 41 in the longitudinal direction.

[0034] The balloons 44 function as buoyancy-providing members that have a buoyancy-providing function to facilitate the transport of the non-combustible sheet 31 and support members 32, and as resistance members to reduce the rate of fall. The balloons 44 are connected to the second support plates 42 and 43 via cables 44a. When the fire containment device 30 falls, the balloons 44 adjust the rate of fall to the fire site by reducing the rate of fall. When transporting the fire containment device 30 to the fire site 100, the size and number of balloons 44 are adjusted according to the speed of the upward flow.

[0035] The fire containment device 30 may also have a fire extinguishing agent container, similar to the first embodiment. The fire extinguishing agent container is mounted below the non-combustible sheet 31 in the direction of fall.

[0036] The fire containment device 30 is transportable by being suspended by multiple drones 45. The multiple drones 45 are connected to the second support plates 42 and 43 by cables 45a. When the fire containment device 30 is suspended by the multiple drones 45, the pair of second support plates 42 and 43 are positioned vertically. The fire containment device 30 then falls by the multiple drones 45, causing the non-combustible sheet 31 to land on the sea surface 111. When the multiple drones 45 are detached from the support member 32, the pair of second support plates 42 and 43 rotate outward due to their own weight and come into close contact with the non-combustible sheet 31.

[0037] <Methods for extinguishing a fire> Figure 7 is a plan view showing the fire containment state by the fire containment device, and Figure 8 is a front view showing the fire containment state by the fire containment device.

[0038] As shown in Figure 5, the fire containment device 30 is held with a support member 32 attached to the center of the non-combustible sheet 31. In this state, the fire containment device 30 is loaded onto a drone or helicopter and transported to the fire site 100 (see Figure 8). The fire containment device 30 is equipped with multiple balloons 44 and connected to multiple drones 45. The fire containment device 30 is dropped towards the fire site 100 while being suspended by multiple drones 45, with its descent speed reduced by the multiple balloons 44. As the fire containment device 30 descends towards the fire site 100 by the descent of multiple drones 45, when it lands at the fire site 100, as shown in Figure 6, the non-combustible sheet 11 is spread out, the multiple drones 45 are detached, and the second support plates 42 and 43 rotate outward and adhere tightly to the non-combustible sheet 31.

[0039] In other words, as shown in Figures 7 and 8, the fire site 100 is at sea 111, with oil 112 that has leaked onto the surface floating, and a fire 101 has occurred. When the fire containment device 30 lands at sea 111, the non-combustible sheet 31 is spread out and opens up, covering the fire 101 occurring at sea 111 from above. As a result, the non-combustible sheet 31, which has spread out in a rectangular shape, covers the fire 101, and the supply of air to the space covered by the non-combustible sheet 31 is cut off. Consequently, the fire 101 at sea 111 (oil 112) is extinguished due to oxygen deprivation, and the fire 101 is brought under control.

[0040] In the above description, when the fire containment device 30 is dropped toward the fire site 100 while suspended by multiple drones 45, the multiple drones 45 are detached. However, the method is not limited to this. For example, the drones 45 may be retained without being detached from the fire containment device 30, and after the fire 101 beneath the non-combustible sheet 31 is extinguished, the non-combustible sheet 31 may be moved to another location where a fire has broken out to repeat the firefighting process. This reduces the number of fire containment devices 30 required and thus reduces costs.

[0041] [Third Embodiment] <Methods for extinguishing a fire> Figure 9 is a front view showing the fire containment method of the third embodiment, and Figure 10 is a front view showing the fire containment method. The basic configuration of the third embodiment is the same as that of the first and second embodiments described above, and will be explained using Figures 1 to 5. Components having the same function are denoted by the same reference numerals, and detailed explanations will be omitted.

[0042] The third embodiment of the fire containment method uses the fire containment device 10 of the first embodiment and the fire containment device 30 of the second embodiment. As shown in Figures 9 and 10, the fire containment method includes the steps of: dropping an umbrella-shaped non-combustible sheet (first non-combustible sheet) 11 in a closed state toward the fire site 100; opening the non-combustible sheet 11 upon landing to cover the fire site 100; and landing a non-combustible sheet (second non-combustible sheet) 31 with a first support plate (support plate) 41 fixed to its center toward the area between the multiple non-combustible sheets 11 that have landed.

[0043] First, as shown in Figure 1, multiple fire containment devices 10, which are in a closed state, are dropped toward the fire site 100. Then, as shown in Figure 2, when the fire containment devices 10 land at the fire site 100, the non-combustible sheets 11 are spread out by the support members 12 and become open. At this time, as shown in Figures 3 and 4, the multiple open non-combustible sheets 11 cover the fire 101 occurring on the sea 111 from above. Then, the fire 101 on the sea 111 (oil 112), covered by the multiple non-combustible sheets 11 that have spread out in a circular shape, becomes oxygen-deprived and is extinguished.

[0044] Next, as shown in Figure 5, multiple fire containment devices 30, supported by multiple balloons 44 and suspended from multiple drones 45, are dropped toward the fire site 100. At this time, by adjusting the flight positions of the multiple drones 45, the multiple fire containment devices 30 are dropped toward the area between the multiple fire containment devices 30 (multiple non-combustible sheets 31) that have landed. Also, since the fire 101 occurring at sea 111 has been partially extinguished by the fire containment devices 10 (multiple non-combustible sheets 11), the multiple drones 45 are adjusted to a low altitude, and the multiple fire containment devices 30 are dropped from a low altitude.

[0045] As shown in Figures 9 and 10, the multiple fire containment devices 30 land in the area between the multiple non-combustible sheets 11, and the multiple non-combustible sheets 31 cover the remaining fire 101 occurring on the sea surface 111 from above. As a result, the fire 101 on the sea surface 111 (oil 112) covered by the multiple non-combustible sheets 31 becomes oxygen-deprived and is extinguished. Consequently, by covering almost the entire area of ​​the fire 101 occurring on the sea surface 111 from above with the two types of non-combustible sheets 11 and 31, the fire 101 is extinguished and brought under control.

[0046] In other words, since the fire 101 is occurring over a wide area at sea 111 at the fire site 100, an upward current of high-temperature air is being generated from sea 111. The fire containment device 10 falls in a closed state with the non-combustible sheet 11 folded on the support member 12, so it can fall from a high altitude relative to the fire site 100 to the target position with little resistance to the rising high-temperature air. When a portion of the fire 101 at the fire site 100 is covered by multiple non-combustible sheets 11 and extinguished, the rising high-temperature air decreases. Therefore, the fire containment device 30 can be dropped from a low altitude relative to the fire site 100 to precisely cover the area of ​​fire 101 between the multiple non-combustible sheets 11 with multiple non-combustible sheets 31. As a result, the fire 101 occurring at sea 111 can be extinguished early by the two types of non-combustible sheets 11 and 31.

[0047] [Effects of this embodiment] The fire containment device according to the first embodiment comprises non-combustible sheets 11, 31 capable of covering the fire site 100, and support members 12, 32 that support the non-combustible sheets 11, 31 and maintain the falling position of the non-combustible sheets 11, 31.

[0048] According to the first embodiment of the fire containment device, the support members 12 and 32 maintain the falling posture of the non-combustible sheets 11 and 31, covering the fire site 100 as the non-combustible sheets 11 and 31 fall. As a result, the oxygen concentration in the space of the fire site 100 covered by the non-combustible sheets 11 and 31 decreases, causing the fire 101 to be extinguished early. Consequently, the fire 101 at the fire site 100 can be contained quickly.

[0049] The fire containment device according to the second embodiment is a fire containment device according to the first embodiment, further comprising a non-combustible sheet 11 that can change between a closed state in which it is folded to reduce air resistance when it falls, and an open state in which it unfolds at least after it falls. As a result, the non-combustible sheet 11 in the closed state has reduced resistance to the high-temperature air rising from the fire site 100, and the fire containment device 10 can be dropped with high precision to the target position.

[0050] The third embodiment of the fire containment device is the same as the second embodiment, and further, the support member 12 is capable of holding the non-combustible sheet 11 in a closed state and an open state. As a result, the support member 12 can reduce the air resistance of the non-combustible sheet 11 by closing the non-combustible sheet 11 when it falls, and after it falls, it can properly cover the fire 101 with the non-combustible sheet 11 by opening the non-combustible sheet 11.

[0051] The fire containment device according to the fourth embodiment is a fire containment device according to the second or third embodiment, further comprising a support member 12 having a shaft portion 21 connected to the center of the non-combustible sheet 11 and a plurality of frame portions 22 arranged radially from the shaft portion 21 and connected to the non-combustible sheet 11, wherein the ends of the plurality of frame portions 22 are pivotably supported on the shaft portion 21, so that the non-combustible sheet 11 can change between a closed state and an open state. This makes it possible to simplify the structure.

[0052] The fire containment device according to the fifth embodiment is a fire containment device according to any one of the second to fourth embodiments, further comprising a fire extinguishing agent container 23 filled with fire extinguishing agent located below the direction in which the non-combustible sheet 11 falls. As a result, when the non-combustible sheet 11 covers the fire 101, the fire extinguishing agent is sprayed from the fire extinguishing agent container 23, thereby enabling the fire 101 to be contained quickly.

[0053] The sixth aspect of the fire containment device is the same as the first aspect of the fire containment device, wherein the support member 32 has a first support plate 41 fixed to the upper central part in the direction of fall of the non-combustible sheet 31, and second support plates 42 and 43 connected along a direction perpendicular to the first support plate 41. As a result, the first support plate 41 maintains the shape of the non-combustible sheet 31, and the drone 45 can suspend the non-combustible sheet 31 using the second support plates 42 and 43.

[0054] The seventh embodiment of the fire containment device is a fire containment device according to the sixth embodiment, further comprising second support plates 42 and 43 rotatably supported at both longitudinal ends of the first support plate 41. This allows the second support plates 42 and 43 to spread outward and contact the non-combustible sheet 31 upon landing, thereby appropriately maintaining the state in which the non-combustible sheet 31 covers the fire 101.

[0055] The eighth embodiment of the fire containment device is a fire containment device according to any one of the first to seventh embodiments, and further includes a balloon 34 as a buoyancy-providing member or resistance member to reduce the falling speed of the non-combustible sheets 11, 31 and support members 12, 32. This makes it possible to appropriately adjust the speed at which the fire containment devices 10, 30 fall to the fire site 100.

[0056] The fire containment device according to the ninth embodiment is a fire containment device according to any one of the first to eighth embodiments, and furthermore, the non-combustible sheets 11, 31 are formed of a thermoplastic material. As a result, when the non-combustible sheets 11, 31 land on the fire site 100, they deform according to the shape of the fire site 100, thereby appropriately covering the fire site 100.

[0057] The fire containment method according to the tenth embodiment includes the steps of dropping an umbrella-shaped non-combustible sheet (first non-combustible sheet) 11 in a closed state toward the fire site 100, opening the non-combustible sheet 11 at least upon landing to cover the fire site 100, and dropping a non-combustible sheet (second non-combustible sheet) 31 fixed to a first support plate (support plate) 41 in the center toward the area between the multiple non-combustible sheets 11 that have landed.

[0058] According to the fire containment method of the tenth embodiment, first, when multiple non-combustible sheets 11 are dropped toward the fire site 100, the multiple non-combustible sheets 11 open up upon landing and cover the fire 101. Next, when multiple non-combustible sheets 31 are dropped toward the area between the multiple non-combustible sheets 11, the multiple non-combustible sheets 31 cover the remaining fire 101 in the area between the multiple non-combustible sheets 11 from above upon landing. As a result, the oxygen concentration in the space of the fire site 100 covered by the non-combustible sheets 11 and 31 decreases, causing the fire 101 to be extinguished early. Consequently, the fire 101 at the fire site 100 can be contained early. [Explanation of Symbols]

[0059] 10. Fire containment device 11. Non-combustible sheet (First non-combustible sheet) 12 Support members 21 Shaft 22 Bones 23 Fire extinguishing agent container 24 Fasteners (restraining members) 25 fins (vertical stabilizers) 30 Fire containment device 31. Non-combustible sheet (Second non-combustible sheet) 32 Support member 41 1st support plate (support plate) 42,43 2nd support plate 44. Balloons (buoyancy-providing members, resistance members) 100 Fire scene 101 Fire 111 Maritime 112 oil

Claims

1. A circular, non-combustible sheet capable of covering the site of a fire, A support member having a shaft portion and a plurality of bone portions, wherein one end of the shaft portion and one end of the plurality of bone portions are pivotably connected, one end of the shaft portion is connected to the center of the non-combustible sheet, the plurality of bone portions are arranged radially from the center, and the other ends are connected to the outer edge of the non-combustible sheet, Equipped with, When the shaft portion is lowered with one end facing downwards towards the fire site, the non-combustible sheet is folded in such a way that air resistance is reduced during the fall. When the sheet lands on the fire site, or while falling, the multiple frame parts swing outward, causing the non-combustible sheet to spread out and cover the fire site. It changes to Fire containment device.

2. The non-combustible sheet further comprises a restraining member for maintaining the non-combustible sheet in a folded, closed state. The fire containment device according to claim 1.

3. The fastener, which serves as the restraining member, comprises a rotating body and a plurality of wings fixed around the rotating body, the rotating body being rotatably supported at the other end of the shaft portion, and the fastener maintains the non-combustible sheet in the closed state by restraining the other ends of the plurality of bone portions. The fire containment device according to claim 2.

4. A fire extinguishing agent container filled with fire extinguishing agent is provided at one end of the shaft portion, on the side below the direction in which the non-combustible sheet falls. The fire containment device according to claim 1.

5. The non-combustible sheet is formed from a thermoplastic material. The fire containment device according to claim 1.

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