JP4925837B2 - Fire spread prevention device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a fire spread prevention device used in a fire spread prevention method for preventing the expansion of the outflow of combustion leak oil at an oil leak fire site.

  Oil leakage fires (fires generated by igniting oil leaked from storage facilities, etc.) are extremely fast due to their physical and scientific properties, and it is extremely difficult to extinguish them after the scale has expanded. Therefore, it is important to prevent the spread of fire by preventing the leakage of combustion leakage oil until it is ready to extinguish. Therefore, the present applicant has proposed as a Japanese Patent Application No. 2006-155067 a fire spread prevention method and a fire spread prevention device used in the method that are effective in the early stage of an oil leakage fire.

  According to this fire spread prevention method, a deformable and long cylindrical body is used to divide the disaster prevention target area from the disaster area, and to form a guiding area continuous with the disaster area, thereby generating combustion leakage oil. By guiding from the disaster area to the guidance area, it is possible to prevent the fire from spreading to the disaster prevention target area that may spread. At this time, water is oozed out from the wall surface of the cylinder that forms the guidance area that is separated from the disaster prevention target area and the disaster area, and the wall surface of the cylinder is covered with a film of the oozed water. Thus, it is possible to protect the cylinder from the heat of the flame, prevent its damage, and maintain the state and the guidance area in which the disaster prevention target area and the disaster area are separated. In addition, by storing the water that has oozed out in the disaster area and the induction area, the combustion leakage oil can be burned on the water surface to keep the oil temperature low, and the flame momentum can be suppressed. Furthermore, by keeping the water level of the accumulated water within a range that does not exceed the height of the cylinder, the combustion leakage oil does not flow over the cylinder and flow into the disaster prevention target area.

In this method for preventing the spread of fire, “leaching out” means a state in which water in the cylinder flows out through the wall surface, for example, when the wall surface is formed of cloth, the entire surface of the wall passes through the gap of the cloth fibers. It refers to the state that springs up. When the water flow in the cylinder is caused to flow out through a through hole provided in the wall, if the hole diameter is extremely small, it is not possible to secure an amount of outflow necessary to protect the cylinder from the heat of the flame. Also, if the hole diameter is such that the amount of outflow necessary to protect the cylinder is secured, the water flowing out from it will draw a parabola and accumulate at a position away from the cylinder, so again the cylinder It cannot be protected from the heat of the flame. Furthermore, when it flows out through a through-hole, the water film for protecting a cylinder from the heat of a flame and preventing the damage is not formed in the wall surface of a cylinder. Therefore, in this method for preventing the spread of fire, it is necessary to cause the water flow in the cylindrical body to flow out in a state of springing out from the entire surface of the wall, that is, to ooze out. Hereinafter, also in the present invention, “bleed out” refers to the same state.
Japanese Patent Application No. 2006-155067

  It is assumed that the water supply sources used in the above-mentioned method for preventing the spread of fire are more often used only in an emergency, such as a fire hydrant. However, since the water supplied from such a water supply source contains a lot of rust, dust, etc., the gap for allowing the water to ooze out on the wall surface of the cylinder is narrowed by the dust, and the water oozing out from the wall surface. There was a risk that the amount of the amount would decrease. In addition, the wall surface of the cylindrical body cannot be sufficiently protected by the water film that oozes out the wall surface of the cylindrical body, which may cause damage to the cylindrical body due to the heat of the flame.

  However, the above-mentioned fire spread prevention method is intended to prevent the spread of fire leakage by preventing the leakage of combustion leakage oil until it is ready to extinguish the fire. It is very unlikely to lead to a situation. Therefore, even if the amount of water that oozes out from the wall surface is reduced, it can be said that the cylinder sufficiently fulfills its role if it is not damaged until the fire fighting operation is started. However, in the case where the waterproof lining is removed from a general fire hose, which is considered to be most suitable for the cylinder at present, if the amount of water that oozes from the wall surface decreases due to the low heat resistance of the material, the heat of the flame It was damaged immediately and it was difficult to maintain the shape until the fire fighting operation was started.

  Therefore, an object of the present invention is to provide a fire spread prevention device that can maintain its shape for a certain period of time without being damaged immediately by the heat of the flame even when the amount of water that exudes from the wall surface decreases.

The fire spread prevention device according to the present invention separates the disaster area including the facility where the oil leakage fire occurred and the vicinity thereof from the disaster prevention target area around the disaster area, and continuously burns to the disaster area. It is arranged on the ground at a position that forms a guiding area for guiding leaked oil and preventing the flame from spreading to the disaster prevention target area. It oozes from is constituted by cylindrical body elongated freely modified, by passing water exuding from the wall Ru reservoir water to the induction area. In the present invention, the concept of “cloth including an aramid fiber as a raw material” includes a cloth containing 100% aramid fiber in addition to a cloth including a fiber other than an aramid fiber as a raw material.

  The cylindrical body may be straight and closed at one end.

  The cylindrical body may include an openable / closable annular part and a straight part extending from the annular part, and an open end of the straight part may be freely connectable to a high-pressure water supply source.

  According to the fire spread prevention device according to the present invention, the cylindrical body to be formed is formed of a cloth containing aramid fibers, so that the cylindrical body itself has some heat resistance, and the amount of water that oozes from the wall surface is reduced. Even in the case of damage, it is possible to prevent damage from being immediately caused by the heat of the flame and to maintain its shape for a certain period of time. In addition, if the cloth contains aramid fibers, it will be provided with a gap to allow water to pass through, so that the water can be oozed out of the wall surface of the cylinder, and the cylinder can be deformed by forming with a cloth. Therefore, the necessary function as a fire spread prevention device is not impaired.

  In order to prevent the expansion of the leakage of combustion leakage oil, it is necessary to quickly fill the inside of the cylinder with water so that the water flows out from the wall surface. Therefore, it is preferable that the cylindrical body has a shape that is not open at an end portion that is not connected to the water supply source, and a cylinder that is straight and closed at one end is preferable as a condition that satisfies such a condition. Similarly, an openable / closable annular part and a straight part extending from the annular part, the open end of which is connectable to a water supply source are also suitable.

  If the cylinder is straight and one end is closed, the closed end may be freely connected and communicated with the end of another cylinder. The length and shape can be adjusted according to the situation at the disaster site. In addition, the edge part of the other cylinder mentioned here also includes the cylinder which has the wall surface which does not ooze out the water other than the edge part of the cylinder which comprises this fire spread prevention instrument. For example, when the place where this fire spread prevention device is placed is away from the high-pressure water supply source, high-pressure water can be efficiently guided using a cylinder that does not allow water to penetrate to that place. It is.

FIG. 1 is a plan view showing an outline of a disaster site where a fire spread prevention device according to the present invention is used.
This fire spread prevention device is composed of a deformable and long cylindrical body 1 through which water flows out from the wall surface. The cylindrical body 1 is straight, is formed of a cloth containing aramid fibers as a material, and is closed at one end 1a thereof. And in the facility which handles a flammable liquid, it is used in the situation which struck by one of the facilities arranged side by side at a predetermined interval.

  The other end of the cylinder 1 that is not closed is connected to the high-pressure water supply source 2. Moreover, the cylinder 1 is arrange | positioned so that the induction | guidance | derivation area | region 7 which divides the disaster prevention object area | region 4 and the disaster area 5 and continues to the disaster area 5 may be formed. In this specific example, the disaster area 5 refers to the facility where the disaster occurred and its vicinity, and the disaster prevention target area 4 refers to the facility on both sides of the disaster facility and the vicinity of those facilities. In addition, a fire prevention groove 11 is provided in advance at a predetermined distance from the facility where the disaster occurred, and a guidance area 7 is formed between the disaster occurrence area 5 and the fire prevention groove 11.

  Further, the cylindrical body 1 is supplied with high-pressure water from the high-pressure water supply source 2 to maintain the swollen state, and the wall surface is covered with a film of water that has exuded from the wall surface. Further, the exuded water 5 is accumulated in the disaster area 5 and the guidance area 7, and a normal fire hose 12 from the rear of the disaster area 5 with the side in contact with the guidance area 7 in the disaster area 5 as the front. The combustion leakage oil 3 is induced by discharging water using the.

  When a sufficient amount of water is oozing out from the wall surface of the cylindrical body 1 in the induction work of the combustion leakage oil 3, the wall surface of the cylindrical body 1 is protected by the oozed water film. However, if the gap for oozing out the water on the wall surface with rust, dust, etc. contained in the water flow is narrowed, the amount of water oozing out from the wall surface will be reduced and the wall surface will not be protected by the water film. The cylinder 1 may be damaged by the heat of the flame. However, in this fire spread prevention device, the cylindrical body 1 is formed of a cloth made of aramid fiber, so that the cylindrical body itself has some heat resistance and the amount of water that oozes out from the wall surface is reduced. However, it is possible to prevent immediate damage from the heat of the flame and maintain its shape for a certain period of time.

  As the cylindrical body 1, a commercially available fire hose formed of a cloth containing aramid fibers, for example, a structure obtained by removing a waterproof lining from a super rocket heat block (product name, manufactured by Togo Co., Ltd.) can be adopted. Since the wall surface of the cylindrical body from which the waterproof lining has been removed from the fire hose is formed only from a cloth fabric made of aramid fibers, it is possible to seep out water. Moreover, since it will also become a deformable thing if a wall surface is formed with the cloth, the function required as a fire spread prevention instrument is not impaired. In addition, the cylinder body which removed the waterproof lining from the fire hose has an advantage that it can be stored in a light and compact manner, and can be easily transported and installed.

  Since one end 1a of the cylindrical body 1 is closed, it is possible to quickly fill the interior of the cylindrical body 1 with water so that water flows out from the wall surface. Moreover, since the closed end 1a can be freely connected and communicated with the end of another cylindrical body, the length and shape can be adjusted according to the situation of the disaster site. For example, although illustration is omitted, when the disaster area is wide or when it is necessary to form a wide guidance area, a plurality of cylinders can be connected to obtain a cylinder having a necessary and sufficient length. it can. Moreover, when the place which arrange | positions this fire spread prevention instrument is away from the high pressure water supply source, high pressure water can be efficiently guide | induced using the cylindrical body which water does not ooze to the arrangement place.

  Next, another specific example of the fire spread prevention device according to the present invention will be described with reference to FIG. FIG. 2 is a plan view showing an outline of a disaster site where the fire spread prevention device is used. In FIG. 2, the same reference numerals are given to substantially the same parts as those in the specific example shown in FIG. 1, and the description thereof is omitted or simplified.

  At the disaster site where this fire spread prevention device is used, the area around the disaster facilities is the disaster prevention target area 4. However, since there is a distance to an adjacent facility, the retreat area 7 has a circular shape having the maximum diameter in a range where the disaster prevention target area 4 is not affected by the flame. Thus, when the evacuation area 7 is a closed area, the cylindrical body 1 includes an openable / closable annular part 1d and a straight part 1e extending from the annular part 1d, and an opening of the straight part 1e. A device whose end is freely connectable to the high-pressure water supply source 2 can be employed. In this case, if the annular portion 1d is opened, the placement work can be easily performed. After the placement work is finished, if the annular portion 1d is closed, water can be poured into the cylinder in a short time. It can be filled and oozed from the wall.

  The annular portion 1d can be opened and closed by attaching and detaching a connecting tool 15 provided in the middle. For this connector 15, a known metal fitting for a fire hose may be adopted. However, if the diameter of the connector 15 is larger than the diameter of the cylinder 1, the gap between the connector 15 and the ground surface becomes large, water does not accumulate in the vicinity of the connector 15, and there is a risk of being damaged by the heat of the flame. . Therefore, the diameter of the connector 14 is preferably equal to the diameter of the cylinder 1. Moreover, when the diameter of the site | part concerning connection becomes larger than the diameter of the cylinder 1, it is preferable to protect the site | part with a sandbag.

It is a top view which shows the outline of the disaster spot where the same fire spread prevention instrument was used which shows the specific example of the fire spread prevention instrument concerning this invention. It is a top view which shows the outline of the disaster site where the same fire spread prevention instrument was used which shows the other specific example of the fire spread prevention instrument concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical body 1a One end 1d Annular part 1e Straight part 2 High pressure water supply source 3 Combustion leaking oil 4 Disaster prevention target area 5 Accident area 6 Accumulated water 7 Guidance area 9 Retraction area 11 Fire protection groove 12 Fire hose 15 Connecting tool

Claims (3)

The disaster area including the facility where the oil spill fire occurred and the vicinity of the disaster area is separated from the disaster prevention area around the disaster area, and the leakage area is guided to the disaster area continuously to the disaster prevention area. It is placed on the ground at a position that forms a guiding area to prevent the flame from spreading, and is formed of a cloth that contains aramid fiber as the material, and water is oozing out from the wall surface. of it consists of cylindrical body (1), fire protection device, characterized in Rukoto reservoir water to the induction area by passing water exuding from the wall surface.   The fire spread prevention device according to claim 1, wherein the cylindrical body (1) is straight and has one end (1a) closed.   The cylindrical body (1) includes an openable / closable annular portion (1d) and a straight portion (1e) extending from the annular portion (1d), and the open end of the straight portion (1e) is formed of high-pressure water. The fire spread prevention device according to claim 1, which is connectable to the supply source (2).

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