JP6752595B2 - Fire spread prevention device - Google Patents

Fire spread prevention device Download PDF

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JP6752595B2
JP6752595B2 JP2016048917A JP2016048917A JP6752595B2 JP 6752595 B2 JP6752595 B2 JP 6752595B2 JP 2016048917 A JP2016048917 A JP 2016048917A JP 2016048917 A JP2016048917 A JP 2016048917A JP 6752595 B2 JP6752595 B2 JP 6752595B2
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fire spread
spread prevention
fire
prevention agent
nozzle
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佑太 小松原
佑太 小松原
将平 石郷岡
将平 石郷岡
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Nohmi Bosai Ltd
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Description

本発明は、火災が発生した際に延焼を防止する薬剤を塗布する、延焼防止装置に関するものである。 The present invention relates to a fire spread prevention device that applies a chemical that prevents the spread of fire when a fire breaks out.

従来は水を用いて火災の延焼防止をすることが一般的であった。しかし、水は流動性が高いことから、延焼防止を行うためには大量の水を放出し続けなればならなかった。そのため、延焼防止設備では大量の水を常時溜めておかなければならず、設備が大型化せざるを得なかった。 In the past, it was common to use water to prevent the spread of fire. However, since water has high fluidity, a large amount of water had to be continuously released in order to prevent the spread of fire. Therefore, the fire spread prevention equipment had to store a large amount of water at all times, and the equipment had to be enlarged.

そこで近年、水の代わりに高粘度の薬剤を用いることが検討されている(特許文献1)。高粘度の薬剤は水と同等程度の消火作用を有する一方、発火前の可燃物表面に付着して熱の伝導や酸素を遮断し、延焼を防止する延焼防止薬剤として機能する。 Therefore, in recent years, it has been studied to use a highly viscous drug instead of water (Patent Document 1). While a high-viscosity chemical has a fire extinguishing effect equivalent to that of water, it adheres to the surface of combustible materials before ignition to block heat conduction and oxygen, and functions as a fire spread prevention chemical to prevent the spread of fire.

特開2011−167357号公報Japanese Unexamined Patent Publication No. 2011-167357

高粘度の延焼防止薬剤を可燃物表面に放出した場合、一般的に消火器やパッケージ型消火装置で用いられている棒状ノズルでは発火前の可燃物表面に勢いよく当たり、はじき飛んでしまい、可燃物表面を隙間無く延焼防止剤で覆うことは難しいことが判明した。これは、高粘度の延焼防止薬剤は流動性が小さいために当たった場所にとどまってしまい、水のように下方や周囲に広がりにくいことが原因と考えられる。加えて、棒状ノズルでは延焼防止薬剤を放出した際に可燃物表面に当たる場所が小さく、広い面積に隙間無く付着させることは難しいことが判明した。一方、高粘度の延焼防止薬剤は文化財の火災の際に使用することが検討されている。しかし、延焼防止薬剤が付着しない箇所が部分的に生じると、延焼防止効果が得られないだけでなく、火災が鎮火した後に延焼防止薬剤を洗い流しても付着の痕跡が残り易いため、文化財には使用しにくい。 When a high-viscosity fire spread prevention agent is released onto the surface of a combustible material, the rod-shaped nozzle generally used in fire extinguishers and package-type fire extinguishing devices vigorously hits the surface of the combustible material before ignition and flicks off, resulting in flammability. It turned out that it was difficult to cover the surface of the object with a fire spread inhibitor without any gaps. It is considered that this is because the high-viscosity fire spread prevention agent stays in the place where it hits due to its low fluidity and does not easily spread downward or to the surroundings like water. In addition, it was found that it is difficult for the rod-shaped nozzle to adhere to a wide area without gaps because the place where it hits the surface of the combustible material when the fire spread prevention agent is released is small. On the other hand, high-viscosity fire spread prevention chemicals are being considered for use in the event of a fire in a cultural property. However, if there are some areas where the fire spread prevention chemicals do not adhere, not only will the fire spread prevention effect not be obtained, but even if the fire spread prevention chemicals are washed away after the fire has been extinguished, traces of adhesion will easily remain, making it a cultural property. Is difficult to use.

また、広い面積に延焼防止薬剤が到達するようにノズルから充円錐状に放出すると、延焼防止薬剤が遠くまで飛びにくいことも判明した。これは、充円錐状に放出すると放出量が多いため圧力が低下し、延焼防止薬剤を飛ばす勢いが得られにくいことが原因と考えられる。 It was also found that when the fire spread prevention agent was discharged from the nozzle in a conical shape so that the fire spread prevention agent reached a large area, it was difficult for the fire spread prevention agent to fly far. It is considered that this is because when it is released in a conical shape, the amount of release is large, so that the pressure drops and it is difficult to obtain the momentum to fly the fire spread prevention agent.

本発明は、高粘度状の延焼防止薬剤を効果的に可燃物表面に付着させることを課題とする。 An object of the present invention is to effectively attach a highly viscous fire spread prevention agent to the surface of a combustible material.

本発明は、上述した課題を解決するためのものであり、以下の構成を有する。 The present invention is for solving the above-mentioned problems, and has the following configurations.

( 1 ) 本発明は、チキソトロピー性の延焼防止薬剤を貯蔵する薬剤容器と、前記薬剤容器内の前記延焼防止薬剤を加圧して押し出す加圧装置と、前記薬剤容器に接続されたホースと、前記ホースに接続されたノズルとを有し、前記ノズルは前記延焼防止薬剤を扇状に放出する延焼防止装置である。 (1) In the present invention, a drug container for storing a thixotropic fire spread prevention drug, a pressurizing device for pressurizing and pushing out the fire spread prevention drug in the drug container, a hose connected to the drug container, and the above. It has a nozzle connected to a hose, and the nozzle is a fire spread prevention device that discharges the fire spread prevention agent in a fan shape.

本発明によって、加圧装置による圧力をあまり低下させずに延焼防止薬剤をノズルから放出させるとともに、可燃物表面に均一に付着させることができる。延焼防止薬剤を棒状に放出すると放出時の勢いが得られるが、可燃物表面に強く当たって飛散し、付着しにくい。また、当たる場所が小さいために可燃物表面に付着しない箇所が部分的に生じやすい。一方、充円錐状に放出すると放出量が多いため勢いが得られず、可燃物表面に到達しにくくなる。本発明では扇状に広がって放出されるため、延焼防止装置の使用者がノズルを縦横に振ることにより延焼防止薬剤を可燃物表面に隙間無く付着させることができる。 According to the present invention, the fire spread prevention agent can be discharged from the nozzle without significantly reducing the pressure of the pressurizing device, and can be uniformly adhered to the surface of the combustible material. When the fire spread prevention chemical is released in a rod shape, the momentum at the time of release is obtained, but it strongly hits the surface of the combustible material and scatters, making it difficult for it to adhere. In addition, since the place where it hits is small, there is a tendency for some parts to not adhere to the surface of the combustible material. On the other hand, if it is released in a conical shape, the amount of release is large, so that momentum cannot be obtained and it becomes difficult to reach the surface of the combustible material. In the present invention, since the fire spreads and is discharged in a fan shape, the user of the fire spread prevention device can shake the nozzle vertically and horizontally to adhere the fire spread prevention agent to the surface of the combustible material without any gap.

(2)また、本発明は、前記加圧装置による圧力は0.1MPa乃至1.0MPaである(1)の延焼防止装置である。 (2) Further, the present invention is the fire spread prevention device of (1) in which the pressure by the pressurizing device is 0.1 MPa to 1.0 MPa.

本発明によって、粒子化した延焼防止薬剤が扇状に放出され、これにより可燃物表面に燃焼防止の効果を生じる厚さで延焼防止薬剤を隙間無く付着させることができる。 According to the present invention, the particleized fire spread prevention agent is released in a fan shape, whereby the fire spread prevention agent can be adhered to the surface of the combustible material with a thickness that produces a combustion prevention effect without gaps.

(3)また、本発明は、前記加圧装置による圧力は0.3MPa乃至0.6MPaである(1)の延焼防止装置である。 (3) Further, the present invention is the fire spread prevention device of (1) in which the pressure by the pressurizing device is 0.3 MPa to 0.6 MPa.

本発明によって、放出後における延焼防止薬剤の粒子が大きくなりすぎず、そのため燃焼防止に十分な効果を生じる厚さで均一に付着させることができるとともに、加圧装置等を高性能にする必要がない。0.3MPa未満の圧力では延焼防止薬剤の粒子が大きくなって可燃物表面に当たった際に飛散してしまい、付着しにくい。また、0.6MPaを超える圧力とすると、遠方距離から放出する場合拡散しやすくなる。 According to the present invention, the particles of the fire spread prevention agent do not become too large after being released, so that the particles can be uniformly adhered to a thickness that is sufficiently effective in preventing combustion, and it is necessary to improve the performance of the pressurizing device or the like. Absent. If the pressure is less than 0.3 MPa, the particles of the fire spread prevention agent become large and scatter when they hit the surface of the combustible material, making it difficult for them to adhere. Further, if the pressure exceeds 0.6 MPa, it becomes easy to diffuse when it is discharged from a long distance.

(4)また、本発明は、前記ノズルにおける前記延焼防止薬剤が扇状に広がる方向は水平方向である(1)乃至(3)の延焼防止装置である。 (4) Further, the present invention is the fire spread prevention device according to (1) to (3), wherein the direction in which the fire spread prevention agent spreads in a fan shape in the nozzle is a horizontal direction.

本発明によって、延焼防止装置の使用者はノズルを上下に振りながら延焼防止薬剤を発火前の可燃物表面に付着させたり、燃焼物に直接当てたりすることができるので、火災に際して使用しやすい。 According to the present invention, the user of the fire spread prevention device can attach the fire spread prevention agent to the surface of the combustible material before ignition or directly hit the combustible material while shaking the nozzle up and down, so that it is easy to use in the event of a fire.

本発明によれば、延焼防止薬剤が付着していない隙間が生じにくい延焼防止装置を提供することができる。 According to the present invention, it is possible to provide a fire spread prevention device in which a gap to which a fire spread prevention agent is not attached is unlikely to occur.

本発明の実施形態であるパッケージ型延焼防止設備を示す全体図。The whole view which shows the package type fire spread prevention equipment which is an embodiment of this invention. 本発明の実施形態におけるノズルの形状を示す図。The figure which shows the shape of the nozzle in embodiment of this invention. 本発明のノズルによる延焼防止薬剤の広がり方を示す図。The figure which shows how the fire spread prevention agent spreads by the nozzle of this invention. 放出圧力による付着率と付着した厚さを示すグラフ。The graph which shows the adhesion rate by the release pressure and the adhesion thickness. 本発明の放出圧力と延焼防止薬剤粒子の大きさとの関係を示すグラフ。The graph which shows the relationship between the release pressure of this invention and the size of a fire spread prevention drug particle.

以下、本発明の実施の形態を、図面に基づいて説明する。ただし、以下で説明する本実施形態は、あらゆる点において本発明の例示に過ぎない。本発明の範囲を逸脱することなく種々の改良や変形が行われてもよい。つまり、本発明の実施にあたって、実施形態に応じた具体的構成が適宜採用されてもよい。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are merely examples of the present invention in all respects. Various improvements and modifications may be made without departing from the scope of the present invention. That is, in carrying out the present invention, a specific configuration according to the embodiment may be appropriately adopted.

本願ではパッケージ型延焼防止設備を延焼防止装置の実施形態として説明する。パッケージ型延焼防止設備は延焼防止薬剤の薬剤容器やホース等をパッケージとして備え、比較的小型であり、文化財の設置場所近辺に容易に設置することができる。 In the present application, the package type fire spread prevention equipment will be described as an embodiment of the fire spread prevention device. The package-type fire spread prevention equipment is equipped with a chemical container for fire spread prevention chemicals, a hose, etc. as a package, is relatively small, and can be easily installed near the place where cultural properties are installed.

<パッケージ型延焼防止設備の構成>
図1は、本発明の実施形態であるパッケージ型延焼防止設備を示す全体図である。薬剤容器である薬剤タンク1は3つ設けられており、各薬剤タンク1には延焼防止薬剤2が貯蔵されている。延焼防止薬剤2は、水にコロイドケイ酸塩を混入したプレミックス液である。3つの薬剤タンク1の各々にはサイホン管3が挿入され、図1の右側から見て1本目と2本目の薬剤タンク1に挿入されたサイホン管3は、隣接する2本目と3本目の薬剤タンク1にそれぞれ接続されている。そして、加圧用ガス容器である窒素ボンベ4から起動用バルブ5、圧力調整器6、点検用の仕切弁7を介して1本目の薬剤タンク1に圧力が供給される。このように、窒素ボンベ4と圧力調整器6は加圧装置を形成している。延焼防止薬剤2はチキソトロピー性を有した高粘度状の物質であり、薬剤タンク1やサイホン管3等の中で圧力が加わることにより発生する剪断応力により流動性が生じる。
<Structure of package type fire spread prevention equipment>
FIG. 1 is an overall view showing a package-type fire spread prevention facility according to an embodiment of the present invention. Three drug tanks 1 which are drug containers are provided, and each drug tank 1 stores a fire spread prevention drug 2. The fire spread prevention agent 2 is a premixed solution in which colloidal silicate is mixed with water. Siphon tubes 3 are inserted into each of the three drug tanks 1, and the siphon tubes 3 inserted into the first and second drug tanks 1 when viewed from the right side of FIG. 1 are adjacent second and third drugs. Each is connected to the tank 1. Then, pressure is supplied from the nitrogen cylinder 4, which is a gas container for pressurization, to the first chemical tank 1 via the starting valve 5, the pressure regulator 6, and the sluice valve 7 for inspection. In this way, the nitrogen cylinder 4 and the pressure regulator 6 form a pressurizing device. The fire spread prevention agent 2 is a highly viscous substance having thixotropic properties, and fluidity is generated by shear stress generated by applying pressure in the agent tank 1 or the siphon tube 3.

圧力調整器6と仕切弁7の間には点検用のガス抜き弁8が接続されている。3本目の薬剤タンク1に挿入されたサイホン管3には20mのホース9が接続され、その先端に放出弁10が設けられている。放出弁10の先には延焼防止薬剤2が扇状に放出されるノズル11が設けられている。そして、上記の各構成は一つの格納箱12の中に納められたパッケージ型の装置形態となっている。仕切弁7とガス抜き弁8は点検の際に用いられるものであり、点検時以外では、仕切弁7は開いておりガス抜き弁8は閉じている。 An inspection degassing valve 8 is connected between the pressure regulator 6 and the sluice valve 7. A 20 m hose 9 is connected to the siphon tube 3 inserted into the third drug tank 1, and a release valve 10 is provided at the tip thereof. A nozzle 11 is provided at the tip of the discharge valve 10 to discharge the fire spread prevention agent 2 in a fan shape. Each of the above configurations is a package-type device form housed in one storage box 12. The sluice valve 7 and the degassing valve 8 are used at the time of inspection, and the sluice valve 7 is open and the degassing valve 8 is closed except at the time of inspection.

図2は、本発明の実施形態におけるノズル11の形状を示す図である。図2(a)はノズル11を、延焼防止薬剤2が放出される放出口111がある先端側から見た図であり、図2(b)は図2(a)におけるA−A線での断面図である。放出口111はノズル11の中央に設けられ、放出口111を横切るように溝112が形成されている。図2(b)に示すように放出口111の奥には給剤室113が設けられ、延焼防止薬剤2を放出口111へ供給する。ノズル11の周囲には雄ネジ114が切られており、取付用切欠115を挟んでノズル11を回転させることにより放出弁10に取り付けられる。 FIG. 2 is a diagram showing the shape of the nozzle 11 according to the embodiment of the present invention. FIG. 2A is a view of the nozzle 11 viewed from the tip side where the discharge port 111 from which the fire spread prevention agent 2 is discharged is located, and FIG. 2B is a view taken along the line AA in FIG. 2A. It is a sectional view. The discharge port 111 is provided in the center of the nozzle 11, and a groove 112 is formed so as to cross the discharge port 111. As shown in FIG. 2B, a supply chamber 113 is provided behind the discharge port 111 to supply the fire spread prevention agent 2 to the discharge port 111. A male screw 114 is cut around the nozzle 11, and the nozzle 11 is attached to the discharge valve 10 by rotating the nozzle 11 with the attachment notch 115 interposed therebetween.

ノズル11の先端で放出口111を横切るように溝112が形成されていることにより、放出口111を通過した延焼防止薬剤2が溝112の方向に広がって放出され、扇状に放出される。本実施形態では溝112が水平方向になるようにノズル11が取り付けられる。そのため、横に広がる扇状に延焼防止薬剤2が放出される。 Since the groove 112 is formed at the tip of the nozzle 11 so as to cross the discharge port 111, the fire spread prevention agent 2 that has passed through the discharge port 111 spreads in the direction of the groove 112 and is discharged in a fan shape. In this embodiment, the nozzle 11 is attached so that the groove 112 is in the horizontal direction. Therefore, the fire spread prevention agent 2 is released in a fan shape that spreads laterally.

<パッケージ型延焼防止設備の使用法>
火災が発生した際には、延焼防止装置の使用者は起動用バルブ5を開いて窒素ボンベ4の圧力を薬剤タンク1に供給する。その後にノズル11を格納箱12から取り出して延焼を避けたい文化財等の方向に向けて放出弁10を開ける。窒素ボンベ4と圧力調整器6は加圧装置を形成し、窒素ボンベ4の圧力は圧力調整器6により調整されて薬剤タンク1に伝えられる。さらにサイホン管3を伝わって2本目と3本目の薬剤タンク1に圧力が伝えられる。窒素ボンベ4と圧力調整器6による加圧により薬剤タンク1内の延焼防止薬剤2が押し出され、3本目の薬剤タンク1からサイホン管3を経てホース9に延焼防止薬剤2が流出する。そして、放出弁10を経てノズル11の放出口111から延焼防止薬剤2が放出される。この時、溝112の作用により、放出される延焼防止薬剤2は水平方向に扇状に広がる。
<How to use package type fire spread prevention equipment>
When a fire breaks out, the user of the fire spread prevention device opens the starting valve 5 to supply the pressure of the nitrogen cylinder 4 to the chemical tank 1. After that, the nozzle 11 is taken out from the storage box 12 and the discharge valve 10 is opened in the direction of the cultural property or the like where the fire spread is to be avoided. The nitrogen cylinder 4 and the pressure regulator 6 form a pressurizing device, and the pressure of the nitrogen cylinder 4 is adjusted by the pressure regulator 6 and transmitted to the drug tank 1. Further, the pressure is transmitted to the second and third drug tanks 1 through the siphon tube 3. The fire spread prevention agent 2 in the chemical tank 1 is pushed out by pressurization by the nitrogen cylinder 4 and the pressure regulator 6, and the fire spread prevention agent 2 flows out from the third chemical tank 1 to the hose 9 via the siphon pipe 3. Then, the fire spread prevention agent 2 is discharged from the discharge port 111 of the nozzle 11 via the discharge valve 10. At this time, due to the action of the groove 112, the fire spread prevention agent 2 released spreads in a fan shape in the horizontal direction.

延焼防止薬剤2はチキソトロピー性を有しているため、薬剤タンク1やサイホン管3等の中で圧力が加わることにより発生する剪断応力によって流動性が生じる。そして、放出口111から放出されると粒子状になり、可燃物表面に達すると付着して高粘度化する。 Since the fire spread prevention agent 2 has thixotropy property, fluidity is generated by the shear stress generated by applying pressure in the agent tank 1 or the siphon pipe 3. Then, when it is discharged from the discharge port 111, it becomes particles, and when it reaches the surface of the combustible material, it adheres and becomes highly viscous.

図3は、本発明のノズル11による延焼防止薬剤2の広がり方を示す図であり、可燃物である文化財の壁14の表面に延焼防止薬剤2を付着させる状況を示している。図3(a)は延焼防止薬剤2の放出状況を上方から見た図であり、図3(b)は側方から見た図である。ホース9の先端にはノズル11が設けられ、ノズル11の先端から延焼防止薬剤2が放出されている。なお、図3では放出弁10の記載は省略している。図3(a)に示すように上方から見た場合には、延焼防止薬剤2は放出口111を通過した後に広がりながら無数の粒子となって放出される。しかし、溝112が水平方向に設けられているため、図3(b)に示すように、放出された延焼防止薬剤13は上下方向にはあまり広がらずに放出される。このように、放出された延焼防止薬剤13は水平方向に扇状に広がる。 FIG. 3 is a diagram showing how the fire spread prevention agent 2 is spread by the nozzle 11 of the present invention, and shows a situation in which the fire spread prevention agent 2 is adhered to the surface of the wall 14 of a cultural property which is a combustible material. FIG. 3A is a view of the release state of the fire spread prevention agent 2 from above, and FIG. 3B is a view from the side. A nozzle 11 is provided at the tip of the hose 9, and the fire spread prevention agent 2 is discharged from the tip of the nozzle 11. Note that the release valve 10 is omitted in FIG. When viewed from above as shown in FIG. 3A, the fire spread prevention agent 2 is released as innumerable particles while spreading after passing through the discharge port 111. However, since the groove 112 is provided in the horizontal direction, as shown in FIG. 3B, the released fire spread prevention agent 13 is released without spreading so much in the vertical direction. In this way, the released fire spread prevention agent 13 spreads in a fan shape in the horizontal direction.

ノズル11から放出され、水平方向に扇状に広がった延焼防止薬剤13は文化財の壁14に付着する。延焼防止装置の使用者はノズル11を上下に振りながら水平方向に移動することによって、延焼防止薬剤2を壁14の面に付着していない場所がないように、隙間無く付着させることができる。 The fire spread prevention agent 13 discharged from the nozzle 11 and spreading in a fan shape in the horizontal direction adheres to the wall 14 of the cultural property. By moving the nozzle 11 in the horizontal direction while swinging the nozzle 11 up and down, the user of the fire spread prevention device can attach the fire spread prevention agent 2 without a gap so that there is no place where the fire spread prevention agent 2 is not attached to the surface of the wall 14.

<加圧圧力について>
発明者は、水90〜98%に対して、高粘度化するための添加剤10〜2%を混合して高粘度の延焼防止薬剤を生成し、付着させた板材を用いた難燃性試験を行った。難燃性試験はJIS規格(JIS A1322 建築用薄物材料の難燃性試験)を参考にして、45度に傾けた厚さ2.5mmのベニヤ板の下面に延焼防止薬剤を塗布し、ベニヤ板の下方からガスバーナーにて180秒間加熱した後、ベニヤ板の炭化部分の長さを測定し延焼防止薬剤塗布時の難燃性を判定した。その結果、延焼防止薬剤の厚さが1mmあれば、ほぼ防炎1級(炭化長さ50mm以下)の難燃性が得られた。さらに、延焼防止薬剤の厚さが3mmでは炭化は生じなかった。
<Pressurized pressure>
The inventor made a flame-retardant test using a plate material in which a high-viscosity fire spread prevention agent was produced by mixing 10 to 2% of an additive for increasing the viscosity with 90 to 98% of water. Was done. For the flame retardancy test, refer to JIS standard (JIS A1322 flame retardancy test for thin materials for construction), apply a fire spread prevention agent to the lower surface of a 2.5 mm thick plywood tilted at 45 degrees, and apply a fire spread prevention agent to the bottom of the plywood. After heating with a gas burner for 180 seconds, the length of the carbonized portion of the plywood was measured to determine the flame retardancy when the fire spread prevention agent was applied. As a result, if the thickness of the fire spread prevention agent was 1 mm, flame retardancy of almost flameproof first grade (carbonization length of 50 mm or less) was obtained. Furthermore, carbonization did not occur when the thickness of the fire spread prevention agent was 3 mm.

また、立設したベニヤ板(厚さ3.5mm)の高さ900mmより上側に高粘度状の延焼防止薬剤を塗り、その近傍(30mm)で200mm×200mmの火皿上での自由燃焼により塗布した延焼防止薬剤の下辺の高さまで900mmの火炎を発生させた。上記の延焼防止薬剤の平均塗り厚さを約3mmとした実験では、延焼防止薬剤を塗布した部分の燃え抜け面積は0.02mとなって燃え抜け面積はほぼ無くなり、燃焼防止にきわめて優れることが判明した。 In addition, a highly viscous fire spread prevention agent was applied above the height of 900 mm of the standing veneer plate (thickness 3.5 mm), and the fire spread was applied by free combustion on a 200 mm x 200 mm pan in the vicinity (30 mm). A flame of 900 mm was generated up to the height of the lower side of the preventive agent. In the experiment in which the average coating thickness of the fire spread prevention agent was about 3 mm, the burnout area of the portion coated with the fire spread prevention agent was 0.02 m 2, and the burnout area was almost eliminated, which was extremely excellent in combustion prevention. There was found.

図4は、放出圧力による延焼防止薬剤の付着率と付着した厚さを示すグラフである。付着率と厚さは圧力が高いほど大きくなっており、0.1MPaでは1mm以上の厚さが得られ、0.3MPaでは約3mmの厚さが得られ、0.5MPaでは4mm以上の厚さが得られる。図4のグラフには示していないが、1.0MPaでも3mm以上の厚さが得られる。したがって、加圧装置による圧力は0.1MPa乃至1.0MPaであれば、燃焼防止の効果を奏することになる。ここで、低い圧力で付着した厚さと付着率が低下する理由は、放出後に空中を飛ぶ延焼防止薬剤の粒子が大きくなるためと考えられる。 FIG. 4 is a graph showing the adhesion rate and the thickness of the fire spread prevention agent due to the release pressure. The adhesion rate and thickness increase as the pressure increases. At 0.1 MPa, a thickness of 1 mm or more is obtained, at 0.3 MPa, a thickness of about 3 mm is obtained, and at 0.5 MPa, a thickness of 4 mm or more is obtained. Is obtained. Although not shown in the graph of FIG. 4, a thickness of 3 mm or more can be obtained even at 1.0 MPa. Therefore, if the pressure by the pressurizing device is 0.1 MPa to 1.0 MPa, the effect of preventing combustion can be obtained. Here, it is considered that the reason why the thickness and the adhesion rate attached at a low pressure decrease is that the particles of the fire spread prevention agent flying in the air after the release become large.

図5は、本発明の放出圧力と空中での延焼防止薬剤粒子の大きさとの関係を示すグラフである。図5(a)は、放出圧力0.5MPaにおける延焼防止薬剤粒子の大きさの割合を示し、図5(b)は、放出圧力0.2MPaにおける延焼防止薬剤粒子の大きさの割合を示す。ノズルから10m離れた場所でガラスの表面に付着させ、付着した延焼防止薬剤の粒子を目視して、粒子の面積と数を集計したものである。図5の粒子の大きさは、付着した粒子の面積で表す。図5では0.05mm以下、0.05mm〜0.2mm、0.2mm〜0.3mm、0.3mm〜0.5mm、0.5mm以上の粒子に分けて、その割合を示している。粒子の割合は対象の粒子径数÷全体の粒子径数の%で示す。 FIG. 5 is a graph showing the relationship between the release pressure of the present invention and the size of the fire spread prevention drug particles in the air. FIG. 5 (a) shows the ratio of the size of the fire spread prevention chemical particles at a release pressure of 0.5 MPa, and FIG. 5 (b) shows the ratio of the size of the fire spread prevention chemical particles at a release pressure of 0.2 MPa. The particles of the fire spread prevention agent adhered to the surface of the glass at a distance of 10 m from the nozzle were visually observed, and the area and number of the particles were totaled. The size of the particles in FIG. 5 is represented by the area of the adhered particles. 5 In 0.05 mm 2 or less, 0.05mm 2 ~0.2mm 2, 0.2mm 2 ~0.3mm 2, 0.3mm 2 ~0.5mm 2, divided into 0.5 mm 2 or more particles, The ratio is shown. The ratio of particles is indicated by the number of target particles divided by the percentage of the total number of particles.

放出圧力0.5MPaでは延焼防止薬剤粒子は小さいが、0.2MPaでは0.5mm以上の大きな延焼防止薬剤粒子が多く含まれる。低い圧力では、大きな延焼防止薬剤粒子が可燃物表面に付着している高粘度状の延焼防止薬剤に強く衝突することにより流動化させ飛散させて、付着率を低下させるとともに付着する厚さが小さくなると考えられる。したがって、加圧装置による圧力は0.3MPa以上であることが望ましい。また、0.6MPaを超える圧力とすると、遠方距離から放出する場合拡散しやすくなるため、0.6MPa以下であることが望ましい。 At a release pressure of 0.5 MPa, the fire spread prevention chemical particles are small, but at 0.2 MPa, a large number of large fire spread prevention chemical particles of 0.5 mm 2 or more are contained. At low pressure, large fire spread prevention chemical particles strongly collide with the highly viscous fire spread prevention chemicals adhering to the surface of the combustible material, causing them to fluidize and scatter, reducing the adhesion rate and reducing the thickness of adhesion. It is considered to be. Therefore, it is desirable that the pressure by the pressurizing device is 0.3 MPa or more. Further, if the pressure exceeds 0.6 MPa, it tends to diffuse when discharged from a long distance, so it is desirable that the pressure is 0.6 MPa or less.

上記の実施形態ではパッケージ型延焼防止設備を文化財の火災の際に用いるとして説明したが、たとえば茅葺き屋根の延焼防止設備として用いても良い。また、パッケージ型延焼防止設備を住宅密集地に備えることもできる。近年の住宅は外壁材の防火性が高いため、外壁から延焼しにくくなっている。そのため、窓から炎が屋内に入って延焼する場合が多い。そこで、火災の際には窓に延焼防止薬剤を付着させることによって、窓からの延焼を抑制することができる。延焼防止薬剤を棒状に放出し窓に当てると、勢いが強すぎて窓が壊れる可能性があり、窓が壊れると火災の炎が屋内に入りやすくなる。しかし、本発明では扇状に放出された延焼防止薬剤が窓に当たるため、窓は壊れにくい。
なお、本発明はパッケージ型の設備形態だけでなく、他の設備形態にも適用することができる。
In the above embodiment, the package type fire spread prevention equipment has been described as being used in the event of a fire of a cultural property, but for example, it may be used as a fire spread prevention equipment for a thatched roof. In addition, package-type fire spread prevention equipment can be provided in densely populated residential areas. Since the outer wall material of recent houses has high fire resistance, it is difficult for fire to spread from the outer wall. Therefore, flames often enter indoors through windows and spread. Therefore, in the event of a fire, it is possible to suppress the spread of fire from the window by adhering a fire spread prevention agent to the window. If the fire spread prevention agent is released in a rod shape and hits the window, the momentum may be too strong and the window may break, and if the window breaks, the flame of the fire can easily enter the room. However, in the present invention, since the fire spread prevention agent released in a fan shape hits the window, the window is not easily broken.
The present invention can be applied not only to the package type equipment form but also to other equipment forms.

1 薬剤タンク、2 延焼防止薬剤、3 サイホン管、4 窒素ボンベ、5 起動用バルブ、6 圧力調整器、7 仕切弁、8 ガス抜き弁、9 ホース、10 放出弁、11 ノズル、111 放出口、112 溝、113 給剤室、114 雄ネジ、115 取付用切欠、12 格納箱、13 放出された延焼防止薬剤、14 壁 1 Chemical tank, 2 Fire spread prevention chemical, 3 Siphon pipe, 4 Nitrogen cylinder, 5 Start valve, 6 Pressure regulator, 7 sluice valve, 8 Gas vent valve, 9 hose, 10 discharge valve, 11 nozzle, 111 discharge port, 112 Grooves, 113 Feeding Room, 114 Male Screws, 115 Mounting Notches, 12 Storage Boxes, 13 Released Fire Spread Prevention Agents, 14 Walls

Claims (2)

チキソトロピー性の延焼防止薬剤を貯蔵する薬剤容器と、
前記薬剤容器内の前記延焼防止薬剤を加圧して押し出す加圧装置と、
前記薬剤容器に接続されたホースと、
前記ホースに接続されたノズルとを有し、
前記ノズルは前記延焼防止薬剤を扇状に前記加圧装置による圧力は0 . 1 M P a 乃至1 . 0 M P aで放出し、前記延焼防止薬剤の厚さを1mm以上塗布することができる延焼防止装置。
A drug container for storing thixotropic fire spread prevention agents,
A pressurizing device that pressurizes and pushes out the fire spread prevention drug in the drug container,
With the hose connected to the drug container,
Has a nozzle connected to the hose
The nozzle fan-shaped the fire spread prevention agent, and the pressure from the pressurizing device was 0. 1 MP a to 1. A fire spread prevention device capable of discharging at 0 MPa and applying a thickness of the fire spread prevention agent of 1 mm or more .
前記ノズルにおける前記延焼防止薬剤が扇状に広がる方向は水平方向である請求項1に記載の延焼防止装置。
The fire spread prevention device according to claim 1, wherein the direction in which the fire spread prevention agent spreads in a fan shape in the nozzle is a horizontal direction.
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