Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4310519B2 - Protective wall - Google Patents
[go: Go Back, main page]

JP4310519B2 - Protective wall - Google Patents

Protective wall Download PDF

Info

Publication number
JP4310519B2
JP4310519B2 JP2004199721A JP2004199721A JP4310519B2 JP 4310519 B2 JP4310519 B2 JP 4310519B2 JP 2004199721 A JP2004199721 A JP 2004199721A JP 2004199721 A JP2004199721 A JP 2004199721A JP 4310519 B2 JP4310519 B2 JP 4310519B2
Authority
JP
Japan
Prior art keywords
protective wall
shock wave
vertical
wall
vertical portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2004199721A
Other languages
Japanese (ja)
Other versions
JP2006022506A (en
Inventor
剛 野津
一喜 日比
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimizu Corp
Original Assignee
Shimizu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimizu Corp filed Critical Shimizu Corp
Priority to JP2004199721A priority Critical patent/JP4310519B2/en
Publication of JP2006022506A publication Critical patent/JP2006022506A/en
Application granted granted Critical
Publication of JP4310519B2 publication Critical patent/JP4310519B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Description

本発明は、防護壁に関するものであり、特に、高い経済性、換気性および解放性を維持しつつ、外部への衝撃波の伝播を低減することができる防護壁に関するものである。   The present invention relates to a protective wall, and more particularly to a protective wall that can reduce the propagation of shock waves to the outside while maintaining high economic efficiency, ventilation, and releasability.

従来より、水素ガスは、周知のように、水素ガスボンベから漏洩した際に火気が存在すると、状況によって衝撃波を伴うガス爆発を引き起こす。水素ガスステーション内で水素が爆発し、強い衝撃波が水素ガスステーションの周辺の建物に伝播した場合には、窓ガラス等が破壊される可能性があるとともに、人体にも悪影響を及ぼす危険性がある。   Conventionally, as is well known, when hydrogen gas leaks from a hydrogen gas cylinder, there is a fire that causes a shock explosion with a shock wave depending on the situation. If hydrogen explodes in the hydrogen gas station and a strong shock wave propagates to the buildings around the hydrogen gas station, the window glass may be destroyed and there is a risk of adverse effects on the human body. .

そこで、従来では、水素ステーションの周辺に防護壁を設けたり、半地下式の水素ガスボンベ建物(特許文献1参照)を設ける等して、安全性を確保している。   Therefore, conventionally, safety is ensured by providing a protective wall around the hydrogen station, or providing a semi-underground type hydrogen gas cylinder building (see Patent Document 1).

特開2001−227200号公報JP 2001-227200 A

ところで、従来においては、防護壁や水素ガスボンベ建物の壁を高くすると、敷地外へ伝播する衝撃波を低減することができるという利点を有しているが、経済性、換気性、開放性が悪化するという問題があった。すなわち、経済性では、防護壁を高くするとその分だけ設置コストが高くつくという問題が生じる。また、換気性では、水素ガスが漏洩した場合に、防護壁が高い分だけ換気が悪くなり、防護壁内に高濃度の水素ガスが滞留するという問題が生じる。さらに、開放性では、高い防護壁により圧迫感を覚えるという問題が生じる。   By the way, conventionally, when the walls of the protective wall and the hydrogen gas cylinder building are raised, there is an advantage that the shock wave propagating to the outside of the site can be reduced. However, the economical efficiency, the ventilation performance, and the openability are deteriorated. There was a problem. In other words, in terms of economy, there is a problem that the installation cost increases as the protective wall increases. Further, in the case of ventilation, when hydrogen gas leaks, there is a problem that ventilation becomes worse by the height of the protective wall, and high concentration hydrogen gas stays in the protective wall. Furthermore, in the openness, there is a problem that a feeling of pressure is felt by a high protective wall.

本発明は、上記に鑑みてなされたものであって、高い経済性、換気性および解放性を維持しつつ、外部への衝撃波の伝播を低減することができる防護壁を提供することを目的とする。   The present invention has been made in view of the above, and an object of the present invention is to provide a protective wall that can reduce the propagation of shock waves to the outside while maintaining high economic efficiency, ventilation, and releasability. To do.

上述した課題を解決し、目的を達成するために、本発明は、水素ステーションの外周に設けられ、水素ガスの爆発に伴い発生する衝撃波から前記水素ステーション外部の周辺領域を防護するための防護壁であって、地面に対して垂直に設けられた垂直部と、前記垂直部の上部に水平に設けられ、前記衝撃波の進行方向に対して水平面を有する水平部とを備えたことを特徴とする。 In order to solve the above-described problems and achieve the object, the present invention provides a protective wall provided on the outer periphery of the hydrogen station for protecting a peripheral region outside the hydrogen station from a shock wave generated by an explosion of hydrogen gas. A vertical portion provided perpendicular to the ground, and a horizontal portion provided horizontally above the vertical portion and having a horizontal plane with respect to the traveling direction of the shock wave. .

また、本発明は、水素ステーションの外周に設けられ、水素ガスの爆発に伴い発生する衝撃波から前記水素ステーション外部の周辺領域を防護するための防護壁であって、地面に対して垂直に設けられた垂直部と、前記垂直部の上部に設けられ、前記衝撃波を複数回、回折させる回折部とを備えたことを特徴とする。 In addition, the present invention is a protective wall provided on the outer periphery of the hydrogen station for protecting the peripheral area outside the hydrogen station from shock waves generated by the explosion of hydrogen gas, and is provided perpendicular to the ground. And a diffractive part that is provided above the vertical part and diffracts the shock wave a plurality of times.

本発明によれば、地面に対して垂直に設けられた垂直部と、垂直部の上部に水平に設けられ、衝撃波の進行方向に対して水平面を有する水平部とを備えた構成としたので、水平部で衝撃波の伝播が減衰されるため、従来に比して、防護壁を高くすることなく、必要な減衰が得られ、高い経済性、換気性および解放性を維持しつつ、外部への衝撃波の伝播を低減することができるという効果を奏する。   According to the present invention, since the vertical portion provided perpendicular to the ground, and a horizontal portion provided horizontally above the vertical portion and having a horizontal plane with respect to the traveling direction of the shock wave, Since the propagation of shock waves is attenuated at the horizontal part, the necessary attenuation can be obtained without increasing the protective wall as compared to the conventional case, and while maintaining high economic efficiency, ventilation and release, There is an effect that propagation of shock waves can be reduced.

また、本発明によれば、地面に対して垂直に設けられた垂直部と、前記垂直部の上部に設けられ、前記衝撃波を複数回、回折させる回折部とを備えた構成としたので、回折部で複数回、衝撃波が回折されることにより、衝撃波の伝播が減衰されるため、従来に比して、防護壁を高くすることなく、必要な減衰が得られ、高い経済性、換気性および解放性を維持しつつ、外部への衝撃波の伝播を低減することができるという効果を奏する。   In addition, according to the present invention, the configuration includes the vertical part provided perpendicular to the ground and the diffractive part provided on the vertical part and diffracting the shock wave a plurality of times. Since the shock wave is diffracted multiple times at the section, the propagation of the shock wave is attenuated, so that the required attenuation can be obtained without increasing the protective wall as compared with the conventional case, and high economic efficiency, ventilation and There is an effect that the propagation of the shock wave to the outside can be reduced while maintaining the releasability.

以下に、本発明にかかる防護壁の実施例を図面に基づいて詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。   Embodiments of a protective wall according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

図1は、本発明にかかる一実施例による防護壁10および防護壁20、比較用の低防護壁1および高防護壁2の構成を示す側断面図である。同図において、防護壁10は、一実施例に対応しており、垂直部10aと、垂直部10aの上端から分岐された分岐部10bおよび分岐部10cとが一体に構成されたY字型の防護壁である。この防護壁10は、図2に示した水素ステーション30の外周に、地面Gに対して垂直に設けられている。   FIG. 1 is a side sectional view showing a configuration of a protective wall 10 and a protective wall 20, a comparative low protective wall 1 and a high protective wall 2 according to one embodiment of the present invention. In the figure, the protective wall 10 corresponds to one embodiment, and is a Y-shaped configuration in which a vertical portion 10a, a branch portion 10b branched from an upper end of the vertical portion 10a, and a branch portion 10c are integrally formed. It is a protective wall. The protective wall 10 is provided perpendicular to the ground G on the outer periphery of the hydrogen station 30 shown in FIG.

防護壁20は、一実施例に対応しており、垂直部20aと、垂直部20aの上部に水平に設けられた水平部20bとが一体に構成されたT字型の防護壁である。この防護壁20は、図2に示した水素ステーション30の外周に地面Gに対して、垂直に設けられている。   The protective wall 20 corresponds to one embodiment, and is a T-shaped protective wall in which a vertical portion 20a and a horizontal portion 20b provided horizontally on the upper portion of the vertical portion 20a are integrally formed. The protective wall 20 is provided perpendicular to the ground G on the outer periphery of the hydrogen station 30 shown in FIG.

低防護壁1および高防護壁2は、前述した従来の防護壁であり、防護壁10および防護壁20と比較するために図示されている。低防護壁1は、地面Gに対して垂直に設けられたI字型の防護壁である。低防護壁1の高さは、2mである。高防護壁2は、前述したように、従来の低防護壁1を高くしたI字型の防護壁であり、地面Gに対して垂直に設けられている。この高防護壁2の高さは、3mである。   The low protection wall 1 and the high protection wall 2 are the conventional protection walls described above, and are shown for comparison with the protection walls 10 and 20. The low protection wall 1 is an I-shaped protection wall provided perpendicular to the ground G. The height of the low protective wall 1 is 2 m. As described above, the high protective wall 2 is an I-shaped protective wall in which the conventional low protective wall 1 is raised, and is provided perpendicular to the ground G. The height of the high protection wall 2 is 3 m.

ここで、防護壁10および防護壁20のそれぞれの高さは、従来の低防護壁1と同様にして、2mである。一実施例においては、Y字型の防護壁10またはT字型の防護壁20を水素ステーション30に採用することにより、従来の低防護壁1と同じ高さで、ガス爆発による衝撃波Sを低減することができる。   Here, the height of each of the protective wall 10 and the protective wall 20 is 2 m, similar to the conventional low protective wall 1. In one embodiment, the Y-shaped protective wall 10 or the T-shaped protective wall 20 is used in the hydrogen station 30 to reduce the shock wave S caused by the gas explosion at the same height as the conventional low protective wall 1. can do.

以下では、一実施例の効果について詳述する。発明者は、図2に示したモデルに基づいて、数値計算により模擬水素ガス爆発実験を行った。模擬水素ガス爆発実験では、図2に示したように、水素ガスボンベ40が設けられた水素ステーション30の外周に低防護壁1、高防護壁2、防護壁10および防護壁20(以下、総称して単に防護壁という)を順次設けた場合のガス爆発時における衝撃波Sによる爆風圧等をシミュレーションした。爆風圧は、計測点P1および計測点P2の2点で計測される。これらの計測点P1および計測点P2は、防護壁(水素ステーション30)の外部の地点であり、水素ステーション30周辺の民家等に対応している。   Below, the effect of one Example is explained in full detail. The inventor conducted a simulated hydrogen gas explosion experiment by numerical calculation based on the model shown in FIG. In the simulated hydrogen gas explosion experiment, as shown in FIG. 2, a low protection wall 1, a high protection wall 2, a protection wall 10 and a protection wall 20 (hereinafter collectively referred to as the outer periphery of a hydrogen station 30 provided with a hydrogen gas cylinder 40. In this case, the blast pressure caused by the shock wave S during the gas explosion when the protective walls are provided sequentially is simulated. The blast pressure is measured at two points, measurement point P1 and measurement point P2. These measurement points P1 and P2 are points outside the protective wall (hydrogen station 30), and correspond to private houses around the hydrogen station 30 and the like.

水素ガスボンベ40から防護壁までの距離は、5mである。防護壁から計測点P1までの距離は、2mである。防護壁から計測点P2までの距離は、6mである。   The distance from the hydrogen gas cylinder 40 to the protective wall is 5 m. The distance from the protective wall to the measurement point P1 is 2 m. The distance from the protective wall to the measurement point P2 is 6 m.

図3は、模擬水素ガス爆発実験、すなわち、水素ガスボンベ40でガス爆発を発生させて、衝撃波Sが伝播した場合における計測点P1での爆風圧の時間的変化を表すグラフである。図4は、同ガス爆発を発生させて、衝撃波Sが伝播した場合における計測点P2での爆風圧の時間的変化を表すグラフである。図5は、計測点P1および計測点P2における防護壁毎の爆風圧のピーク値と、低防護壁1(I字型)の計測値を基準としたときの性能比較を示す図表である。   FIG. 3 is a graph showing a temporal change in the blast pressure at the measurement point P1 when a shock wave S is propagated by generating a gas explosion in the hydrogen gas cylinder 40, that is, a simulated hydrogen gas explosion experiment. FIG. 4 is a graph showing a temporal change in the blast pressure at the measurement point P2 when the shock wave S is propagated by causing the gas explosion. FIG. 5 is a chart showing a performance comparison when the peak value of the blast pressure for each protection wall at the measurement points P1 and P2 and the measurement value of the low protection wall 1 (I-shaped) are used as a reference.

図3において、特性線A1は、図2に示した水素ステーション30の外周に低防護壁1(図1参照)を設けた場合の爆風圧の時間的変化を表している。特性線A2は、同外周に高防護壁2(図1参照)を設けた場合の爆風圧の時間的変化を表している。特性線A3は、同外周に防護壁10(図1参照)を設けた場合の爆風圧の時間的変化を表している。特性線A4は、同外周に防護壁20(図1参照)を設けた場合の爆風圧の時間的変化を表している。   In FIG. 3, a characteristic line A1 represents a temporal change in blast pressure when the low protection wall 1 (see FIG. 1) is provided on the outer periphery of the hydrogen station 30 shown in FIG. A characteristic line A2 represents a temporal change in the blast pressure when the high protection wall 2 (see FIG. 1) is provided on the outer periphery. A characteristic line A3 represents a temporal change in the blast pressure when the protective wall 10 (see FIG. 1) is provided on the outer periphery. A characteristic line A4 represents a temporal change in the blast pressure when the protective wall 20 (see FIG. 1) is provided on the outer periphery.

図4において、特性線B1は、図2に示した水素ステーション30の外周に低防護壁1(図1参照)を設けた場合の爆風圧の時間的変化を表している。特性線B2は、同外周に高防護壁2(図1参照)を設けた場合の爆風圧の時間的変化を表している。特性線B3は、同外周に防護壁10(図1参照)を設けた場合の爆風圧の時間的変化を表している。特性線B4は、同外周に防護壁20(図1参照)を設けた場合の爆風圧の時間的変化を表している。   In FIG. 4, a characteristic line B1 represents a temporal change in the blast pressure when the low protection wall 1 (see FIG. 1) is provided on the outer periphery of the hydrogen station 30 shown in FIG. A characteristic line B2 represents a temporal change in the blast pressure when the high protection wall 2 (see FIG. 1) is provided on the outer periphery. A characteristic line B3 represents a temporal change in the blast pressure when the protective wall 10 (see FIG. 1) is provided on the outer periphery. A characteristic line B4 represents a temporal change in the blast pressure when the protective wall 20 (see FIG. 1) is provided on the outer periphery.

図3および図5より、特性線A3(防護壁10に対応)のピーク値(爆風圧のピーク値)は、特性線A1(低防護壁1に対応)のピーク値を26%下回っている。また、特性線A4(防護壁20に対応)のピーク値(爆風圧のピーク値)は、特性線A1(低防護壁1に対応)のピーク値を42%下回っている。   3 and 5, the peak value of the characteristic line A3 (corresponding to the protective wall 10) (the peak value of the blast pressure) is 26% lower than the peak value of the characteristic line A1 (corresponding to the low protective wall 1). Further, the peak value of the characteristic line A4 (corresponding to the protective wall 20) (the peak value of the blast pressure) is 42% lower than the peak value of the characteristic line A1 (corresponding to the low protective wall 1).

また、図3および図5からは、特性線A3および特性線A4(防護壁10および防護壁20に対応)のピーク値(爆風圧のピーク値)が、特性線A2(高防護壁2に対応)のピーク値に近似またはピーク値を下回っていることがわかる。特に、特性線A4(2mの防護壁20に対応)のピーク値は、特性線A2(3mの高防護壁2に対応)のピーク値を下回っている。すなわち、防護壁20は、高防護壁2よりも低いにもかかわらず、衝撃波Sを低減させる効果が高いということができる。   3 and FIG. 5, the peak values (peak values of blast pressure) of the characteristic lines A3 and A4 (corresponding to the protective walls 10 and 20) correspond to the characteristic line A2 (high protective wall 2). ) Is close to or below the peak value. In particular, the peak value of the characteristic line A4 (corresponding to the 2 m protective wall 20) is lower than the peak value of the characteristic line A2 (corresponding to the 3 m high protective wall 2). That is, although the protective wall 20 is lower than the high protective wall 2, it can be said that the effect of reducing the shock wave S is high.

図4および図5より、特性線B3(防護壁10に対応)のピーク値(爆風圧のピーク値)は、特性線B1(低防護壁1に対応)のピーク値を14%下回っている。また、特性線B4(防護壁20に対応)のピーク値(爆風圧のピーク値)は、特性線B1(低防護壁1に対応)のピーク値を20%下回っている。   4 and 5, the peak value of the characteristic line B3 (corresponding to the protective wall 10) (the peak value of the blast pressure) is 14% lower than the peak value of the characteristic line B1 (corresponding to the low protective wall 1). Moreover, the peak value (peak value of the blast pressure) of the characteristic line B4 (corresponding to the protective wall 20) is 20% lower than the peak value of the characteristic line B1 (corresponding to the low protective wall 1).

また、図4および図5からは、特性線B3および特性線B4(防護壁10および防護壁20に対応)のピーク値(爆風圧のピーク値)が、特性線B2(高防護壁2に対応)のピーク値に近似していることがわかる。   4 and 5, the peak value (the peak value of the blast pressure) of the characteristic line B3 and the characteristic line B4 (corresponding to the protective wall 10 and the protective wall 20) corresponds to the characteristic line B2 (high protective wall 2). It can be seen that it approximates the peak value of

図6は、模擬水素ガス爆発実験におけるガス爆発から0.0117秒後、0.0176秒後、0.023秒後における各防護壁の周辺の圧力の等圧線を表すコンター図である。同図には、(1)低防護壁1、(2)防護壁10および(3)防護壁20についての圧力の時間的変化が図示されている。   FIG. 6 is a contour diagram showing isobaric lines of pressure around each protective wall at 0.0117 seconds, 0.0176 seconds, and 0.023 seconds after the gas explosion in the simulated hydrogen gas explosion experiment. The figure shows the temporal change in pressure for (1) the low protection wall 1, (2) the protection wall 10, and (3) the protection wall 20.

Y字型の防護壁10においては、図7に示したように、回折点Pk1(分岐部10bの端部)と回折点Pk2(分岐部10cの端部)という2カ所で衝撃波Sの回折が発生することにより、地面Gの近傍での爆風圧が低くなることにより、上述した効果を奏する。 In the Y-shaped protective wall 10, as shown in FIG. 7, the shock wave S is generated at two points, a diffraction point P k1 (end part of the branch part 10 b) and a diffraction point P k2 (end part of the branch part 10 c). Due to the occurrence of diffraction, the blast pressure in the vicinity of the ground G is lowered, and the above-described effects are exhibited.

一方、T字型の防護壁20においては、衝撃波Sの進行方向に対して水平面として機能する水平部20bにより、下方へ伝播する衝撃波Sを低減させることにより、上述した効果を奏する。   On the other hand, the T-shaped protective wall 20 has the above-described effects by reducing the shock wave S propagating downward by the horizontal portion 20b functioning as a horizontal plane with respect to the traveling direction of the shock wave S.

ここで、Y字型の防護壁10においては、V字部(分岐部10bおよび分岐部10c)が長いほど衝撃波Sの低減に効果が高い。また、T字型の防護壁20においては、水平部20bの水平面の長さが長いほど衝撃波Sの低減に効果が高い。   Here, in the Y-shaped protective wall 10, the longer the V-shaped part (the branch part 10 b and the branch part 10 c), the higher the effect of reducing the shock wave S. Further, in the T-shaped protective wall 20, the longer the horizontal plane of the horizontal portion 20b is, the higher the effect of reducing the shock wave S is.

以上説明したように、一実施例によれば、地面Gに対して垂直に設けられた防護壁20と、防護壁20の上部に水平に設けられ、衝撃波Sの進行方向に対して水平面を有する水平部20bとを備えた構成としたので、水平部20bで衝撃波Sの伝播が減衰されるため、従来に比して、防護壁を高くすることなく、必要な減衰が得られ、高い経済性、換気性および解放性を維持しつつ、外部への衝撃波Sの伝播を低減することができる。   As described above, according to one embodiment, the protective wall 20 provided perpendicular to the ground G, and provided horizontally above the protective wall 20, has a horizontal plane with respect to the traveling direction of the shock wave S. Since the propagation of the shock wave S is attenuated by the horizontal portion 20b because the configuration includes the horizontal portion 20b, the necessary attenuation can be obtained without increasing the protective wall as compared with the conventional case, and high economic efficiency. Further, the propagation of the shock wave S to the outside can be reduced while maintaining the ventilation and release characteristics.

また、一実施例によれば、地面Gに対して垂直に設けられた垂直部10aと、垂直部10aの上部に設けられ、衝撃波Sを複数回、回折させる分岐部10bおよび分岐部10c(回折部)とを備えた構成としたので、分岐部10bおよび分岐部10cで複数回、衝撃波Sが回折されることにより、衝撃波Sの伝播が減衰されるため、従来に比して、防護壁を高くすることなく、必要な減衰が得られ、高い経済性、換気性および解放性を維持しつつ、外部への衝撃波Sの伝播を低減することができる。   Further, according to one embodiment, the vertical portion 10a provided perpendicular to the ground G, and the branch portion 10b and the branch portion 10c (diffraction) provided on the upper portion of the vertical portion 10a and diffracting the shock wave S a plurality of times. Part), the propagation of the shock wave S is attenuated by the shock wave S being diffracted a plurality of times by the branch part 10b and the branch part 10c. Without increasing the required attenuation, the necessary attenuation can be obtained, and the propagation of the shock wave S to the outside can be reduced while maintaining high economy, ventilation and release.

以上本発明にかかる一実施例について図面を参照して詳述してきたが、具体的な構成例はこの一実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等があっても本発明に含まれる。   Although one embodiment according to the present invention has been described in detail with reference to the drawings, a specific configuration example is not limited to this one embodiment, and design changes and the like within a scope not departing from the gist of the present invention are possible. Even if it exists, it is included in this invention.

例えば、前述した一実施例においては、図7に示したように、Y字型の防護壁10と、T字型の防護壁20とを例にとって説明したが、水平面を持たせて下方への衝撃波Sの伝播を低減する方法や、衝撃波Sを複数回、回折させて下方向への伝播を低減させる方法、これらの方法の組み合わせを実現するための形状であれば、防護壁10や防護壁20の形状に限定されない。例えば、一実施例においては、図8に示した防護壁50および防護壁60や、図9に示した防護壁70および防護壁80を用いてもよい。   For example, in the above-described embodiment, the Y-shaped protective wall 10 and the T-shaped protective wall 20 are described as an example as shown in FIG. A method for reducing the propagation of the shock wave S, a method for diffracting the shock wave S a plurality of times to reduce the downward propagation, and a shape for realizing a combination of these methods, the protective wall 10 and the protective wall It is not limited to 20 shapes. For example, in one embodiment, the protective wall 50 and the protective wall 60 shown in FIG. 8 and the protective wall 70 and the protective wall 80 shown in FIG. 9 may be used.

図8に示した防護壁50は、垂直部50aと、垂直部50aの上部に同図左方に突出するように水平に設けられた水平部50bとが一体に構成された逆L字型の防護壁である。一方、防護壁60は、垂直部60aと、垂直部60aの上部途中から同図左上斜めに分岐するように設けられた分岐部60bとが一体に構成された変形Y字型の防護壁である。   The protective wall 50 shown in FIG. 8 has an inverted L-shaped configuration in which a vertical portion 50a and a horizontal portion 50b horizontally provided so as to protrude to the left of the vertical portion 50a are integrally formed. It is a protective wall. On the other hand, the protective wall 60 is a deformed Y-shaped protective wall in which a vertical portion 60a and a branch portion 60b provided so as to branch obliquely from the middle of the upper portion of the vertical portion 60a are formed integrally. .

図9に示した防護壁70および防護壁80は、図8に示した防護壁50と防護壁60とを複合させた防護壁である。すなわち、防護壁70は、垂直部70aと、垂直部70aの上部に水平に同図左方に突出するように設けられた水平部70bと、垂直部70aの上部途中から同図右斜め上に分岐するように設けられた分岐部70cとが一体に構成された第1複合型の防護壁である。分岐部70cでは、衝撃波Sが回折される。   The protective wall 70 and the protective wall 80 shown in FIG. 9 are protective walls in which the protective wall 50 and the protective wall 60 shown in FIG. 8 are combined. That is, the protective wall 70 includes a vertical portion 70a, a horizontal portion 70b provided so as to protrude horizontally on the upper portion of the vertical portion 70a, and an upper right portion of the vertical portion 70a. This is a first composite type protective wall integrally formed with a branching portion 70c provided to branch off. The shock wave S is diffracted at the branch portion 70c.

一方、防護壁80は、垂直部80aと、垂直部80aの上部に水平に同図右方に突出するように設けられた水平部80bと、垂直部80aの上部途中から同図左斜め上に分岐するように設けられた分岐部80cとが一体に構成された第2複合型の防護壁である。分岐部80cの先端および水平部80bの後方端では、衝撃波Sが回折される。   On the other hand, the protective wall 80 includes a vertical portion 80a, a horizontal portion 80b provided so as to protrude to the right of the vertical portion 80a, and an upper left portion of the vertical portion 80a. This is a second composite type protective wall integrally formed with a branch portion 80c provided to branch. The shock wave S is diffracted at the front end of the branch portion 80c and the rear end of the horizontal portion 80b.

また、一実施例においては、水素ガスのガス爆発への適用例について説明したが、衝撃波の低減を目的とするものであればいかなる用途にも適用可能である。   Further, in one embodiment, the application example of hydrogen gas to a gas explosion has been described. However, any application can be applied as long as it aims to reduce shock waves.

以上のように、本発明にかかる防護壁は、水素ガスステーション等における爆発に対して、有用である。   As described above, the protective wall according to the present invention is useful against an explosion at a hydrogen gas station or the like.

本発明にかかる一実施例による防護壁10および防護壁20、比較用の低防護壁1および高防護壁2の構成を示す側断面図である。It is a sectional side view which shows the structure of the protective wall 10 and the protective wall 20 by one Example concerning this invention, and the low protective wall 1 and the high protective wall 2 for a comparison. 同一実施例における模擬水素ガス爆発実験の環境を示す図である。It is a figure which shows the environment of the simulation hydrogen gas explosion experiment in the same Example. 図2に示した水素ガスボンベ40でガス爆発を発生させて、衝撃波Sが伝播した場合における計測点P1での爆風圧の時間的変化を表すグラフである。It is a graph showing the time change of the blast pressure in the measurement point P1 when a gas explosion is generated in the hydrogen gas cylinder 40 shown in FIG. 2 and the shock wave S propagates. 図2に示した水素ガスボンベ40でガス爆発を発生させて、衝撃波Sが伝播した場合における計測点P2での爆風圧の時間的変化を表すグラフである。It is a graph showing the time change of the blast pressure in the measurement point P2 when a gas explosion is generated in the hydrogen gas cylinder 40 shown in FIG. 図2に示した計測点P1および計測点P2における防護壁毎の爆風圧のピーク値と、低防護壁1(I字型)の計測値を基準としたときの性能比較を示す図表である。It is a chart which shows the performance comparison when the peak value of the blast pressure for every protection wall in the measurement point P1 and the measurement point P2 shown in FIG. 2 and the measurement value of the low protection wall 1 (I-shaped) are used as a reference. 模擬水素ガス爆発実験におけるガス爆発から0.0117秒後、0.0176秒後、0.023秒後における各防護壁の周辺の圧力の等圧線を表すコンター図である。It is a contour figure showing the isobars of the pressure around each protection wall after 0.0117 seconds, 0.0176 seconds, and 0.023 seconds after the gas explosion in the simulated hydrogen gas explosion experiment. 同一実施例による防護壁10および防護壁20における衝撃波Sの伝搬を低減する原理を説明する側断面図である。It is a sectional side view explaining the principle which reduces propagation of the shock wave S in the protective wall 10 and the protective wall 20 by the same Example. 一実施例の変形例による防護壁50および防護壁60の構成を示す側断面図である。It is a sectional side view which shows the structure of the protective wall 50 and the protective wall 60 by the modification of one Example. 一実施例の変形例による防護壁70および防護壁80の構成を示す側断面図である。It is a sectional side view which shows the structure of the protective wall 70 and the protective wall 80 by the modification of one Example.

符号の説明Explanation of symbols

10 防護壁
10a 垂直部
10b 分岐部
10c 分岐部
20 防護壁
20a 垂直部
20b 水平部
30 水素ステーション
40 水素ガスボンベ
50 防護壁
50a 垂直部
50b 水平部
60 防護壁
60a 垂直部
60b 分岐部
70 防護壁
70a 垂直部
70b 水平部
70c 分岐部
80 防護壁
80a 垂直部
80b 水平部
80c 分岐部
DESCRIPTION OF SYMBOLS 10 Protective wall 10a Vertical part 10b Branch part 10c Branch part 20 Protective wall 20a Vertical part 20b Horizontal part 30 Hydrogen station 40 Hydrogen gas cylinder 50 Protective wall 50a Vertical part 50b Horizontal part 60 Protective wall 60a Vertical part 60b Branch part 70 Protective wall 70a Vertical Part 70b Horizontal part 70c Branch part 80 Protective wall 80a Vertical part 80b Horizontal part 80c Branch part

Claims (7)

水素ステーションの外周に設けられ、水素ガスの爆発に伴い発生する衝撃波から前記水素ステーション外部の周辺領域を防護するための防護壁であって、
地面に対して垂直に設けられた垂直部と、
前記垂直部の上部に水平に設けられ、前記衝撃波の進行方向に対して水平面を有する水平部と、
を備えたことを特徴とする防護壁。
A protective wall provided on the outer periphery of the hydrogen station for protecting a peripheral region outside the hydrogen station from a shock wave generated by an explosion of hydrogen gas ;
A vertical portion provided perpendicular to the ground;
A horizontal portion provided horizontally above the vertical portion and having a horizontal plane with respect to the traveling direction of the shock wave;
A protective wall characterized by comprising.
前記垂直部および前記水平部は、断面略T字形状であることを特徴とする請求項1に記載の防護壁。   The protective wall according to claim 1, wherein the vertical portion and the horizontal portion have a substantially T-shaped cross section. 前記垂直部および前記水平部は、断面略逆L字形状であることを特徴とする請求項1に記載の防護壁。   The protective wall according to claim 1, wherein the vertical part and the horizontal part have a substantially inverted L-shaped cross section. 前記垂直部の途中から分岐し、前記衝撃波を回折させる回折部を備えたことを特徴とする請求項3に記載の防護壁。   The protective wall according to claim 3, further comprising a diffractive portion that branches off from the middle of the vertical portion and diffracts the shock wave. 水素ステーションの外周に設けられ、水素ガスの爆発に伴い発生する衝撃波から前記水素ステーション外部の周辺領域を防護するための防護壁であって、
地面に対して垂直に設けられた垂直部と、
前記垂直部の上部に設けられ、前記衝撃波を複数回、回折させる回折部と、
を備えたことを特徴とする防護壁。
A protective wall provided on the outer periphery of the hydrogen station for protecting a peripheral region outside the hydrogen station from a shock wave generated by an explosion of hydrogen gas ;
A vertical portion provided perpendicular to the ground;
A diffractive part provided on the vertical part and diffracting the shock wave a plurality of times;
A protective wall characterized by comprising.
前記回折部は、前記垂直部の上部から2方向に分岐しており、前記垂直部および前記回折部は、断面略Y字形状であることを特徴とする請求項5に記載の防護壁。   6. The protective wall according to claim 5, wherein the diffractive part is branched in two directions from an upper part of the vertical part, and the vertical part and the diffractive part have a substantially Y-shaped cross section. 前記回折部は、前記垂直部の途中から分岐しており、前記衝撃波を1回回折させ、前記垂直部および前記回折部は、断面略変形Y字形状であることを特徴とする請求項5に記載の防護壁。   The said diffraction part is branched from the middle of the said perpendicular | vertical part, diffracts the said shock wave once, and the said perpendicular | vertical part and the said diffraction part are cross-sectional substantially deformed Y-shapes, The protective wall as described.
JP2004199721A 2004-07-06 2004-07-06 Protective wall Expired - Fee Related JP4310519B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004199721A JP4310519B2 (en) 2004-07-06 2004-07-06 Protective wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004199721A JP4310519B2 (en) 2004-07-06 2004-07-06 Protective wall

Publications (2)

Publication Number Publication Date
JP2006022506A JP2006022506A (en) 2006-01-26
JP4310519B2 true JP4310519B2 (en) 2009-08-12

Family

ID=35795976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004199721A Expired - Fee Related JP4310519B2 (en) 2004-07-06 2004-07-06 Protective wall

Country Status (1)

Country Link
JP (1) JP4310519B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017150272A1 (en) 2016-02-29 2017-09-08 株式会社神戸製鋼所 Combustible gas supply unit and barrier

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101000610B1 (en) 2010-08-23 2010-12-10 정수진 EPM protection facility of existing underground bunker and its construction method
JP6779754B2 (en) * 2016-11-14 2020-11-04 ホーチキ株式会社 Protective wall device
JP6834504B2 (en) * 2017-01-13 2021-02-24 株式会社大林組 Hydrogen station
KR102122874B1 (en) 2017-07-28 2020-06-15 가부시키가이샤 고베 세이코쇼 Combustible gas supply unit and hydrogen station
JP7212740B2 (en) * 2020-10-14 2023-01-25 ホーチキ株式会社 Protective wall device and hydrogen station
FR3121608B1 (en) * 2021-04-07 2023-04-14 Air Liquide Protective barrier for industrial equipment
KR102420507B1 (en) * 2022-03-18 2022-07-15 주식회사 에이베스트 Hydrogen station of tunnel structure, and charging method for the same
WO2025046928A1 (en) * 2023-08-31 2025-03-06 パナソニックIpマネジメント株式会社 Power supply system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017150272A1 (en) 2016-02-29 2017-09-08 株式会社神戸製鋼所 Combustible gas supply unit and barrier
KR20180114922A (en) 2016-02-29 2018-10-19 가부시키가이샤 고베 세이코쇼 Flammable gas supply unit and barrier
EP3396229A4 (en) * 2016-02-29 2019-08-14 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Combustible gas supply unit and barrier
US10704284B2 (en) 2016-02-29 2020-07-07 Kobe Steel, Ltd. Combustible gas supply unit and barrier

Also Published As

Publication number Publication date
JP2006022506A (en) 2006-01-26

Similar Documents

Publication Publication Date Title
JP4310519B2 (en) Protective wall
US9555837B2 (en) Vehicle hood structure
CA2845825A1 (en) Method for determining fracture spacing and well fracturing using the method
JPH0885921A (en) Soundproof wall
Malhotra et al. Blast pressure leakage into buildings and effects on humans
Moslehi Tabar et al. Seismic rehabilitation of steel arch bridges using nonlinear viscous dampers: Application to a case study
Fan et al. Blast mitigation of a novel curtain-type blast wall
KR20140124132A (en) Hood structure
CN201770950U (en) Sound barrier for high speed railway
CN102706525B (en) Method for determining shock-isolation effects of LNG (liquefied natural gas) storage tank
Magdalena et al. Optimal design and placement of a combined trench and submerged breakwater system on the coastal area of Aceh
CN105869619B (en) Fish scale noise reducer
KR102013547B1 (en) Seismic connector device for coupling cable tray
KR200493321Y1 (en) Panel for building interior and exterior materials
JP5334518B2 (en) Automotive door guard bar
Lin et al. NPP planning based on analysis of ground vibration caused by collapse of large-scale cooling towers
Borgers et al. Blast walls reviewed
CN209586149U (en) A kind of sound insulated fire door
CN206319272U (en) The damping system of damp type railway metal sound barrier
KR200236327Y1 (en) Front reinforced gabion
KR20170123783A (en) Jet fire firewall
JP6364273B2 (en) Impact force suppression structure
Yu et al. Steel framed structures subjected to the combined effects of blast and fire-Part 2: case study
Yang et al. Simulation study on the noise reduction performance of enclosed noise barriers with different opening layouts
KR101001929B1 (en) Transparent soundproof board with means to prevent fixing and detachment of patterns

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070118

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20081120

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081209

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090205

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090414

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090423

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120522

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4310519

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120522

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130522

Year of fee payment: 4

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140522

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees