JP2008142123A - Fire-extinguishing grenade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire-extinguishing grenade which delivers a fire-extinguishing agent to the vicinity of an origin of the fire regardless of the kind of the fire-extinguishing agent to be used to effectively carry out fire-extinguishing work. <P>SOLUTION: The fire extinguishing grenade is equipped with a casing which is filled with the fire-extinguishing agent and has a discharging opening of the fire-extinguishing agent at one end, an altitude detecting means for detecting an altitude, and a control means for controlling the discharging opening to be in an open state when the altitude reaches a prescribed value. The casing has a fire-extinguishing agent push-out means for pushing the fire-extinguishing agent toward the discharging opening inside, and the control means controls the fire-extinguishing means to push out the fire-extinguishing agent filled in the casing toward the discharging opening when it opens the discharging opening. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

 The present invention relates to a fire extinguisher filled with a fire extinguishing agent, and particularly to a drop-type fire extinguisher dropped from an airplane such as an airplane or a helicopter.

  In the event of a fire such as the Great East Japan Earthquake, it is expected that fire extinguishing activities from the ground with fire engines etc. will be very difficult due to road breakage and congestion, rupture of fire prevention water pipes, etc. In such a case, fire fighting activities from the sky by an airplane such as an airplane or a helicopter are important.

  Conventionally, a method in which a liquid fire extinguisher is sprinkled from above the fire site by an airplane equipped with a fire extinguishing water tank containing a liquid fire extinguisher or a helicopter in which the fire fighting water tank is suspended has been adopted. According to such a sprinkling system, (1) it is very dangerous because the aircraft carrying the fire extinguisher needs to traverse the ascending current in the fire site at low speed and low speed (especially helicopters have their flight speed, altitude, and advance to the fire site) The distance is a big constraint). (2) If the fire extinguisher is sprayed from an altitude that is safe for the aircraft in consideration of (1) above, the fire extinguisher will evaporate by heat before reaching the source of the fire, and the fire extinguishing effect will be scattered by the rising airflow Becomes smaller. (3) There is a problem that it takes time and labor to load and reload the liquid digestive agent.

As a technique for solving such a problem of the watering method, the following Patent Document 1 discloses that it can be transported by an aircraft or the like, dropped over the fire site, reaches a predetermined altitude, or has been dropped for a predetermined time. A dropped fire extinguishing bullet is disclosed that releases a fire extinguishing agent filled therein when it has elapsed. This conventional drop-type fire extinguisher is dropped while maintaining the posture so that the discharge port of the extinguishing agent is in the falling direction, and when it reaches a predetermined altitude or when a predetermined time elapses, the discharge port is opened and spontaneous fall due to gravity A fire extinguisher is released by the phenomenon.
JP-A-8-229153

  According to the conventional drop-type fire extinguishing bullet described above, the safety of the transport aircraft can be ensured, and problems such as the extinguishing agent being evaporated by heat can be solved. However, as the updraft at the fire site gets stronger as it gets closer to the fire source, it is difficult for the extinguisher to reach the vicinity of the fire source due to the updraft if the fire extinguisher is released due to the natural fall phenomenon due to gravity as in the past. There is a problem of being. In addition, in a conventional drop-type fire extinguisher, when a liquid fire extinguisher having fluidity such as water is used, it can be easily released by a natural fall phenomenon. In the case of using a fire extinguisher of the system, there has been a problem that it is difficult to effectively release the fire extinguisher by the natural fall phenomenon due to gravity as described above.

  The present invention has been made in view of such circumstances, and a fire extinguishing bomb that can effectively extinguish a fire extinguisher by reaching the vicinity of the fire source regardless of the type of the extinguishing agent used. The purpose is to provide.

 In order to solve the above-mentioned problems, in the present invention, as a first solution means for a fire extinguishing bullet, a casing filled with a fire extinguishing agent and provided with a discharge port for the fire extinguishing agent at one end, and an altitude detecting altitude A fire extinguishing bomb comprising detection means and control means for controlling the discharge port to an open state when the altitude reaches a predetermined value, wherein the fire extinguishing agent is directed toward the discharge port in the casing. A fire extinguishing agent extruding means for extruding, and when the discharge port is opened, the control means controls the fire extinguishing agent push means to direct the fire extinguishing agent filled in the casing toward the discharge port. It is characterized by extruding.

 Further, in the present invention, as a second solving means relating to a fire extinguishing bullet, in the first solving means, the other end of the casing has a function of rotating the casing while maintaining the discharge port in a falling direction. It has the posture control means which has.

 Further, in the present invention, as a third solving means relating to a fire extinguishing bullet, in the above first or second solving means, a fire extinguishing packaged in a region different from the extinguishing agent filling region in the casing. A plurality of agents are stored, and a release door that is opened when the packaged extinguishing agent is released is provided in the casing.

 According to the fire-extinguishing bullet of the present invention, a fire-extinguishing agent push-out means for extruding the fire-extinguishing agent toward the discharge port is provided in the casing filled with the fire extinguishing agent and provided with the discharge port of the fire extinguishing agent. In the open state, the extinguishing agent push-out means is controlled so that the extinguishing agent filled in the casing is pushed out toward the outlet, so that the extinguishing agent can be expelled vigorously and there is a rising airflow. Even fire extinguishing agent can reach fire source. Further, even when a powder-type fire extinguisher such as an oxygen deficient is used, the fire extinguisher can be easily released. That is, regardless of the type of extinguishing agent used, it is possible to provide a fire extinguishing bomb that allows the extinguishing agent to reach the vicinity of the fire source and effectively perform the extinguishing activity.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a side view showing the configuration of the fire extinguishing bullet MS1 according to the first embodiment of the present invention. The fire extinguishing bomb MS1 will be described by exemplifying a dropped fire extinguishing bomb that is connected to an airplane such as an airplane or a helicopter and is transported and dropped from above the fire site.

 As shown in FIG. 1, this fire bomb MS1 includes a casing 1, a fire extinguisher 2, a radio altimeter (altitude detection means) 3, a fire extinguisher push-out section (extinguishing agent push-out means) 4, a gas generator 5, a deployable stable A wing (posture control means) 6, a deployment detection sensor 7, a suspension device 8, a control device (control means) 9, and a safety wire 10 are provided.

  The casing 1 has a substantially cylindrical shape at one end (warhead side) and is gradually reduced in diameter toward the other end, for discharging the extinguishing agent 2 filled inside at one end. A discharge port 1a and a front lid 1b that defines the open / close state of the discharge port 1a are provided. The front lid 1 b is connected to one end of the casing 1 by a hinge mechanism, and is opened and closed under the control of the control device 9. Further, a reinforcing material (keel) 1c for maintaining rigidity of the casing 1 and facilitating transportation and the like is provided on the inner wall side of the upper portion of the casing 1. Such a casing 1 is preferably made of a resin material. By using resin, the weight of the fire extinguishing bullet MS1 can be reduced, and transportation is facilitated.

 The fire extinguisher 2 is a powder fire extinguisher such as an oxygen deficient having an oxygen blocking effect, for example, and is filled in a filling region 1 d provided inside the casing 1. In addition, when filling with the extinguishing agent 2, the front cover 1b is opened, and the extinguishing agent 2 is filled into the filling region 1d from the discharge port 1a.

  The radio altimeter 3 is provided on the inner wall side of the front lid 1b, detects the altitude from the ground, and outputs an altitude detection signal indicating the altitude to the control device 9. By using such a radio wave type altimeter, it is possible to suppress the influence of disturbances such as heat, light, turbulence, and gas generated over the fire site and accurately detect the altitude.

 The extinguishing agent extruding portion 4 is a disk-shaped member provided at the end opposite to the discharge port 1 a in the filling region 1 d in the casing 1, and toward the discharge port 1 a by the compressed gas generated by the gas generator 5. It moves and discharges the fire extinguishing agent 2 from the discharge port 1a. The gas generator 5 generates high-pressure compressed gas toward the extinguishing agent pusher 4 under the control of the controller 9.

 The deployable stabilizer wing 6 is a wing-like member connected to the casing 1 by a hinge mechanism, and is provided in a plurality at the other end of the casing 1. In a normal state, the deployable stabilizer wing 6 is integrally formed with the outer wall of the casing 1 and dropped from the aircraft. Is automatically developed by the air flow. Further, the deployable stabilizing blade 6 is provided so as to deploy with a predetermined inclination rather than being perpendicular to the long side direction of the casing 1 when deployed. The deployment detection sensor 7 is provided at a connecting portion between the deployment-type stabilizing blade 6 and the casing 1, detects that the deployment-type stabilization blade 6 has deployed, and outputs a deployment detection signal to the control device 9. One deployment detection sensor 7 may be provided corresponding to at least one blade of the deployment-type stabilizing blade 6. However, in consideration of the case where the blade does not expand due to a malfunction or the sensor breaks down. It is preferable to provide a plurality.

 The suspension device 8 is provided on the upper portion of the casing 1 and connects the fire extinguishing bullet MS1 and the aircraft.

 The control device 9 controls the start of operation of the radio altimeter 3 based on the deployment detection signal input from the deployment detection sensor 7, and also controls the front lid 1b based on the altitude detection signal input from the radio altimeter 3. The opening and the start of operation of the gas generator 5 are controlled. Further, a safety wire 10 is connected to the control device 9, and the control device 9 starts operation with the removal of the safety wire 10 as a trigger. That is, the control device 9 does not perform any operation for maintaining safety while the safety wire 10 is connected. One end of the safety wire 10 is connected to the control device 9, and the other end is connected to the aircraft when the fire extinguishing bullet MS <b> 1 is connected to the aircraft via the suspension device 8.

Next, the operation of the fire extinguishing bullet MS1 thus configured will be described.
First, as shown in FIG. 2, the present fire bomb MS1 connected to the transport aircraft AC via the suspension device 8 is over the fire site (for example, assuming that the oil complex is a fire site) by the transport aircraft AC. To be transported. As shown in FIG. 2, when the transport aircraft AC reaches a safe altitude above the fire site, the fire bomb MS1 is dropped toward the fire site. At this time, one end of the safety wire 10, that is, the end connected to the control device 9 is disconnected, and the control device 9 starts to operate.

 And as shown to Fig.3 (a), the expansion | deployment type stabilization blade | wing 6 expand | deploys with the airflow by fall. Here, as described above, since the deployable stabilizing blade 6 deploys with a predetermined inclination, the fire extinguishing bullet MS1 falls while rotating. Thus, by falling while rotating, it is possible to stabilize the trajectory of the fire extinguishing bullet MS1 and to stabilize the warhead pointing direction. That is, the fire extinguishing bullet MS1 falls while keeping the discharge port 1a of the extinguishing agent 2 in the dropping direction.

 At this time, the deployment detection sensor 7 detects that the deployment-type stabilizing blade 6 has been deployed, and outputs a deployment detection signal to the control device 9. When the control device 9 receives the deployment detection signal, the control device 9 instructs the radio altimeter 3 to start the operation. The radio altimeter 3 detects the altitude of the fire extinguishing bullet MS1 and outputs an altitude detection signal indicating the altitude to the control device 9.

 The control device 9 monitors the above-described altitude detection signal, and when the altitude of the fire extinguishing bullet MS1 reaches a predetermined value, that is, when the altitude having the greatest fire extinguishing effect is reached, the front lid 1b is opened, and the gas generator 5 is instructed to generate compressed gas. And with the high-pressure compressed gas which the gas generator 5 generate | occur | produced, the extinguishing agent extrusion part 4 moves so that the extinguishing agent 2 with which the filling area | region 1d was filled may be extruded toward the discharge port 1a. Thereby, as shown in FIG.3 (b), the fire extinguisher 2 is discharged | emitted vigorously with high pressure toward the falling direction from the discharge port 1a. At this time, since the fire extinguishing bullet MS1 is rotating, the extinguishing agent 2 can be sprayed radially by centrifugal force, and as a result, not only the direct extinguishing of the extinguishing bullet MS1 but also the surrounding extinguishing can be performed. . After that, the fire extinguishing bomb MS1 will fall on the building and surface of the fire as it is, but it will fall to the vicinity of the fire, minimizing secondary damage to the surroundings due to the scattering of fragments. it can.

As described above, according to the fire bomb MS1 of the first embodiment,
(1) Even if there is an upward airflow over the fire site, the fire extinguisher 2 can be made to reach the vicinity of the fire source effectively.
(2) Since it is an air bomb type, the fire extinguishing bomb MS1 can be dropped from a safe altitude that is not affected by the rising air current over the fire site, and the safety of the transport aircraft AC is ensured.
(3) Due to the method of filling the casing 1 with the extinguishing agent 2, stock storage and mounting, re-loading, transportation and the like are facilitated.
(4) There is no restriction on the flight performance of the transport aircraft AC, and in addition, conventional equipment such as a drop sight can be used.
(5) By using the fire extinguishing bullet MS1, it is possible to use defense aircraft such as fighters, anti-submarine patrol aircraft, and anti-tank helicopters that were conventionally considered unsuitable for fire fighting activities.

 In the above embodiment, the powder-based fire extinguisher 2 is used, but the same effect can be obtained even when a liquid fire-extinguishing agent is filled. Moreover, in the said embodiment, although the drop-type fire extinguishing bomb MS1 conveyed and dropped by the carrying aircraft AC was illustrated and demonstrated, it is not restricted to such a drop-type, but can be directed from the ground to the fire site by a cannon or the like. It may be a fire-extinguishing type of fire. Further, the attitude control means provided at the other end of the casing 1 may be a parachute or the like. If the parachute is used, the effect of rotating the fire extinguishing bullet MS1 is lost, but the discharge port 1a can be maintained in the falling direction, and the trajectory can be stabilized and the warhead pointing direction can be stabilized.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 4 is a side view showing the configuration of the fire extinguishing bullet MS2 in the second embodiment. In FIG. 4, the same components as those in FIG.

  As shown in FIG. 4, the configuration of the fire extinguishing bomb MS2 of the second embodiment is different from the fire extinguishing bomb MS1 of the first embodiment in that the casing 1 is filled with a powdered extinguishing agent 2. Apart from the area 1d, there is provided a secondary bullet storage area 1e for storing a plurality of packaged extinguishing agents (hereinafter referred to as fire extinguishing bullets 20), and on the wall surface of the casing 1 in the secondary bullet storage area 1e. In this case, a bullet-spreading door (release door) 1f for spraying the fire extinguishing bullets 20 is provided. Further, since the casing 1 is enlarged due to the provision of the bullet housing area 1e, the keel 1g is disposed between the gas generator 5 and the controller 9 in order to ensure rigidity.

  The fire extinguisher bullet 20 is a liquid fire extinguisher packaged in, for example, a resin case, and is stored in the bullet storage area 1e with high density. The bullet discharge door 1f is connected to the casing 1 in the bullet storage area 1e by a hinge mechanism, and is normally integrated with the outer wall of the casing 1 in a normal state, and automatically linked to the movement of the extinguishing agent push-out portion 4. It has a configuration that opens up.

  Subsequently, the operation of the fire extinguishing bullet MS2 having such a configuration will be described. The operation until the front lid 1b is opened when the aircraft is transported to the sky of the fire site and dropped by the transport aircraft AC and reaches a predetermined altitude is the same as that in the first embodiment, and a description thereof will be omitted.

 The control device 9 monitors the altitude detection signal input from the radio altimeter 3, and when the altitude of the fire extinguisher MS2 reaches a predetermined value, the front cover 1b is opened and compressed gas is supplied to the gas generator 5. Instruct to occur. The extinguishing agent extruding part 4 moves so as to push out the extinguishing agent 2 filled in the filling region 1d toward the discharge port 1a by the high-pressure compressed gas generated by the gas generating device 5, thereby extinguishing the extinguishing agent 2 Is discharged at high pressure from the discharge port 1a in the falling direction. Here, as shown in FIG. 5, the bullet discharge door 1 f is opened in conjunction with the movement of the extinguishing agent pusher 4, and the extinguisher bullet 20 stored in the bullet storage area 1 e is extinguished by centrifugal force due to rotation. It is scattered (released) around the bullet MS2.

 At this time, since the fire extinguishing bullet MS2 is rotating, the extinguishing agent 2 and the extinguishing bullet 20 can be radially spread over a wide range by centrifugal force. When the fire extinguisher bullet 20 falls to the building or the ground and the resin case is cracked, the contents (that is, the liquid fire extinguisher) flow out, and the liquid fire extinguisher extinguishes the temperature and the combustible material separation effect. In addition, the spread of fire can be prevented by the coating effect. Therefore, according to the present fire extinguishing bullet MS2, it is possible to more effectively extinguish the fire by the synergistic effect of the oxygen blocking effect by the fire extinguishing agent 2 which is an oxygen deficient agent and the extinguishing effect of the fire extinguishing bullet 20 including the liquid fire extinguishing agent. It can be performed.

 The member for packaging the fire extinguishing bullet 20 is not limited to a resin case, and for example, a film that is easily melted by heat may be used. By wrapping with such a film, the film melts while the fire extinguishing bullet 20 is dropped, and the contents (liquid fire extinguishing agent) can be sprayed from above. Moreover, as a fire extinguisher of the fire extinguisher bullet 20, not only a liquid fire extinguisher but a powder fire extinguisher may be used.

It is a side view showing composition of fire extinguisher bullet MS1 concerning a 1st embodiment of the present invention. It is the 1st explanatory view showing fire extinguishing activity using fire extinguishing bullet MS1 concerning a 1st embodiment of the present invention. It is the 2nd explanatory view showing fire extinguishing activity using fire extinguishing bullet MS1 concerning a 1st embodiment of the present invention. It is a side view which shows the structure of the fire-extinguishing bullet MS2 which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the fire fighting activity using the fire extinguisher bullet MS2 which concerns on 2nd Embodiment of this invention.

Explanation of symbols

  MS1, MS2 ... fire extinguisher, 1 ... casing, 2 ... extinguishing agent, 3 ... radiometer (altitude detecting means), 4 ... extinguishing agent pushing part (extinguishing agent pushing means), 5 ... gas generator, 6 ... expandable stability Wings (posture maintaining means), 7 ... deployment detection sensor, 8 ... suspension device, 9 ... control device (control means), 10 ... safety wire, 1a ... discharge port, 1b ... front cover, 1c ... keel, 1d ... filling Area, 1e ... Bullet storage area, 1f ... Bullet spray door, 1g ... Keel, 20 ... Fire extinguisher, AC ... Transport aircraft

Claims (3)

A casing which is filled with a fire extinguisher and has a discharge port for the fire extinguisher at one end, altitude detection means for detecting altitude, and the discharge port is controlled to be open when the altitude reaches a predetermined value. A fire extinguisher with control means,
In the casing, provided with a fire extinguisher pushing means for pushing the fire extinguisher toward the discharge port,
The control means, when the discharge port is in an open state, controls the fire extinguishing agent pushing means to push out the fire extinguisher filled in the casing toward the discharge port.
A fire bomb characterized by that.   The fire extinguishing bullet according to claim 1, further comprising: attitude control means having a function of rotating the casing while maintaining the discharge port in a dropping direction at the other end of the casing. In the casing, a plurality of packaged extinguishing agents are stored in a region different from the region where the extinguishing agent is filled,
The fire extinguishing bullet according to claim 1, wherein the casing is provided with a discharge door that is opened when the packaged fire extinguisher is discharged.

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