JP4119087B2 - Dangerous goods tank with detonation structure - Google Patents

Dangerous goods tank with detonation structure Download PDF

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Publication number
JP4119087B2
JP4119087B2 JP2000396621A JP2000396621A JP4119087B2 JP 4119087 B2 JP4119087 B2 JP 4119087B2 JP 2000396621 A JP2000396621 A JP 2000396621A JP 2000396621 A JP2000396621 A JP 2000396621A JP 4119087 B2 JP4119087 B2 JP 4119087B2
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Japan
Prior art keywords
tank
plate
dangerous goods
body portion
straight
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
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JP2000396621A
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Japanese (ja)
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JP2002193388A (en
Inventor
保雄 関川
茂人 庄司
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エア・ウォーター・ケミカル株式会社
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Publication of JP2002193388A publication Critical patent/JP2002193388A/en
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Description

【0001】
【発明の属する技術分野】
この発明は、常圧で危険物を貯蔵する据置式の放爆構造を有する危険物タンクに関する。
【0002】
【従来の技術】
常圧で危険物を貯蔵する屋外貯蔵タンクは、周囲からの加熱、タンク内火災等によるガスの発生によりタンク内の圧力が異常に上昇した場合、放置すればタンクの破壊を招くことになる。このとき、タンク底板または側板が破壊すれば、その被害は甚大なものとなるので、これを防ぐためその圧力を上方に放出できる構造とするか、相応の消火設備を設置しなければならない。
【0003】
危険物の規制に関する政令第11条第1項第6号においては、「屋外貯蔵タンクは、危険物の爆発等によりタンク内の圧力が異常に上昇した場合に内部のガス又は蒸気を上部に放出することができる構造とすること。」と規定されている。
【0004】
一般に、縦置円筒型タンクにあっては、例えば、図に示すように、側板51上部のトップアングル52と屋根板53との接合部(溶接部)のすみ肉54を、タンクの他の接合部(溶接部)よりも弱くする放爆構造をとることが多い。この場合、屋根板53とラフタ55は溶接してはならない。また、その他のタンクの場合は、一定の内圧になると上部へ放出するような破壊板等の方式が考えられる。
【0005】
比重差により二液を分離する分離槽等に多く採用されている既存の据置式横型円筒型タンクは、比較的小容量であり、縦置円筒型タンクに比較してドレンを抜きやすく、底板の腐食も少なく、安価であるという特徴を有している。
【0006】
【発明が解決しようとする課題】
しかしながら、既存の据置式横型円筒型タンクにおいては、胴部が円筒状であるため、放爆構造とすることができず、また、一定の内圧になると上部へ放出するような破壊板等の方式とすることもできない。このため、据置式横型円筒型タンクにおいては、ブリーザー弁付きの不活性ガス封入設備を設置するか、泡消火装置または水噴霧装置等の消火設備を設ける必要があるが、不活性ガス封入設備や消火設備は、設備費が高価であるという欠点を有している。
【0007】
本発明の目的は、円筒型タンクの有利な特徴を残して放爆構造とした据置式横型の危険物タンクを提供することにある。
【0008】
【課題を解決するための手段】
本発明の請求項1の放爆構造を有する据置式横型危険物タンクの特徴は、タンクの胴部が水平配置される円筒型でその上側半分の側壁をストレートに直立させた断面U字型からなり該胴部の対向する前記側壁上端間にフラットの天板を、そして該胴部の両端に直板からなる側板を、それぞれ断面 L 字型のトップアングルを用いて接合配置した構成からなり、フラットの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くして放爆構造としたことである。
このように、水平配置される円筒型を基本とする胴部を円筒の上側半分をストレートにした断面U字型となして、天板をフラットにかつ両端の側板を直板としトップアングルを用いて接合する際に、フラットの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くして放爆構造としたことによって、比較的小容量で、縦置円筒型タンクに比較してドレンを抜きやすく、底板の腐食も少なく、安価であるという特徴を有し、かつ、放爆構造とすることができる。
【0009】
本発明の請求項2の放爆構造を有する据置式横型危険物タンクの特徴は、タンクの胴部が水平配置される円筒型でその上側半分の側壁をストレートに直立させた断面U字型からなり該胴部の対向する前記側壁上端間に傾斜付きの天板を、そして該胴部の両端に直板からなる側板を、それぞれ断面 L 字型のトップアングルを用いて接合配置した構成からなり、傾斜付きの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くして放爆構造としたことである。
このように、水平配置される円筒型を基本とする胴部を特定形状の断面U字型となし、天板を傾斜付きにかつ両端の側板を直板としトップアングルを用いて接合する際に、傾斜付きの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くして放爆構造としたことによって、比較的小容量で、縦置円筒型タンクに比較してドレンを抜きやすく、底板の腐食も少なく、安価であるという特徴を有し、かつ、放爆構造とすることができる。
また、本発明の請求項3の放爆構造を有する据置式横型危険物タンクの特徴は、請求項2の記載の放爆構造を有する据置式危険物タンクにおいて、天板に作業員が直接乗って作業できる傾斜付きの屋根型天板である。
【0010】
【発明の実施の形態】
本発明の放爆構造は、据置式横型危険物タンクにおいて水平配置される胴部を円筒型から上半分をストレートにした断面U字型とし、左右の鏡板(側板)を直板とすることによって、胴部の上部に配置接合する天板部分において既存のコーンルーフタンクと同じ放爆構造が取れ、かつ、円筒型の有する従来の利点を損なうことなく、据替えや新規設置が可能となる。なお、天板は、フラットまたは傾斜付きの屋根型とでき、直接天板上に作業員が乗れる構造とする。
【0011】
なお、天板をフラットまたは傾斜付きの屋根型とし、直接天板上に作業員が乗って作業できる構造とすることにより、手すりのみで操作デッキが不要となる。
【0012】
本発明の放爆構造において、据置式横型危険物タンクの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くするには、フラットな天板と胴部上部および側板上部のトップアングルとの溶接部のすみ肉サイズを他の部分より小さくする。
0013
特に、据置式横型危険物タンクの場合は、同一容量ならば既設の約85%の半径とでき、タンクを小型化できるとともに、製作費がその分安価となる。また、胴部が円筒型からU字型となり、直接天板上に作業員が乗れるので、手すりのみで操作デッキが不要となる。さらに、タンク内液面の変動が直線的となるので、液面管理が容易となる
0014
【実施例】
以下にこの発明の据置式危険物タンクの放爆構造の詳細を実施の一例を示す図1〜図に基づいて説明する。図1はこの発明の据置式横型危険物タンクの側面図、図2はこの発明の据置式横型危険物タンクの正面図、図3は放爆構造の一例を示す拡大断面図である。
0015
図1、図2において、1は据置式横型危険物タンク、2は据置式横型危険物タンク1の断面U字型の胴部である。3は断面U字型の胴部2の両端に接合したU字型直板、4は胴部2およびU字型直板3の屋根に設けた天板である。天板4は、図に示すように、胴部2およびU字型直板3の上部のトップアングル5に、他の溶接部分よりすみ肉6のサイズを小さくして溶接固定され、据置式横型危険物タンク1内の圧力が異常に上昇した場合に、内部のガスまたは蒸気がすみ肉6部を破って上部に放出するよう構成している。なお、7は天板4の周囲に設けた手すりである。
0016
上記のように、据置式横型危険物タンク1においては、胴部2を断面U字型とし、胴部2の両端にU字型直板3を接合したことによって、屋根を直板または傾斜付きの天板4として放爆構造を取ることができると共に、比較的小容量で、縦置円筒型タンクに比較してドレンを抜きやすく、底板の腐食も少なく、安価であるという従来の据置式横型円筒状タンクの有する特徴を損なうこともない。しかも、天板4の周囲に手すり7を設けることによって、作業員が直接天板4上に乗って作業でき、従来の作業デッキが必要ない。
0017
【発明の効果】
本発明の放爆構造を有する据置式危険物タンクは、比較的小容量で、縦置円筒型タンクに比較してドレンを抜きやすく、底板の腐食も少なく、安価であるという従来の円筒状タンクの有する特徴を損なうことなく、放爆構造とすることができると共に、作業員が直接天板上に乗って作業できるから、従来の作業デッキを不要とできる。
【図面の簡単な説明】
【図1】 この発明の据置式横型危険物タンクの側面図である。
【図2】 この発明の据置式横型危険物タンクの正面図である。
図3】 この発明の放爆構造の一例を示す拡大断面図である。
図4】 従来の縦置円筒型タンクの放爆構造の一例を示す拡大断面図である。
【符号の説明】
据置式横型危険物タンク
胴部
3 U字型直板
天板4
、52 トップアングル
、54 すみ肉
手すり
51 側板
53 屋根板
55 ラフタ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dangerous goods tank having a stationary release structure for storing dangerous goods at normal pressure.
[0002]
[Prior art]
Outdoor storage tanks that store dangerous goods at normal pressure will cause destruction of the tank if the pressure in the tank rises abnormally due to gas generation due to heating from the surroundings, fire in the tank, or the like. At this time, if the tank bottom plate or the side plate is destroyed, the damage will be enormous. To prevent this, the structure must be able to release the pressure upward, or a corresponding fire extinguishing equipment must be installed.
[0003]
In Article 11, Paragraph 1, Item 6 of the Decree on the Regulation of Dangerous Goods, “Outdoor storage tanks release internal gas or vapor to the top when the pressure in the tank rises abnormally due to explosion of dangerous goods, etc. It shall be a structure that can be done. "
[0004]
In general, in a vertical cylindrical tank, for example, as shown in FIG. 4 , a fillet 54 at a joint portion (welded portion) between a top angle 52 on an upper side plate 51 and a roof plate 53 is connected to another tank. In many cases, it has an explosion structure that makes it weaker than the joint (welded part). In this case, the roof plate 53 and the raft 55 should not be welded. In the case of other tanks, a method such as a breaking plate that discharges to the upper part when a constant internal pressure is reached can be considered.
[0005]
The existing stationary horizontal cylindrical tank, which is widely used in separation tanks that separate two liquids due to the difference in specific gravity, has a relatively small capacity and is easier to drain than the vertical cylindrical tank. It is characterized by low corrosion and low cost.
[0006]
[Problems to be solved by the invention]
However, in the existing stationary horizontal cylindrical tank, the barrel is cylindrical , so it cannot be an explosion structure, and a method such as a destruction plate that discharges to the top when a constant internal pressure is reached. It can not be. For this reason, it is necessary to install an inert gas sealing facility with a breather valve or a fire extinguishing facility such as a foam fire extinguishing device or a water spraying device in a stationary horizontal cylindrical tank. Fire extinguishing equipment has the disadvantage of high equipment costs.
[0007]
It is an object of the present invention to provide a stationary horizontal dangerous goods tank having a detonation structure while leaving the advantageous characteristics of a cylindrical tank.
[0008]
[Means for Solving the Problems]
Features of stationary type horizontal hazardous materials tank having a Ho爆structure according to claim 1 of the present invention, the U-shaped cross section body portion of the tank is upright side walls of the upper half and straight cylindrical disposed horizontally will become the top panel of the flat between said side wall top end opposite the body portion, and a side plate made of both ends straight plate of the barrel portion, a configuration in which joining arranged with each L-shaped cross section top angle of, That is, the joint portion between the flat top plate and the top angle of the upper portion of the trunk and the upper portion of the side plate is made weaker than the other joint portions of the tank to form an explosion structure.
In this way, the cylindrical body that is horizontally arranged is a U-shaped section with the upper half of the cylinder straight, and the top plate is flat and the side plates at both ends are straight plates , using the top angle When joining, the joint between the flat top plate and the top angle of the upper part of the trunk and the side plate is made weaker than the other joints of the tank and has an explosion structure. Compared to a vertical cylindrical tank, drainage is easy to drain, the bottom plate is less corroded, and it is inexpensive and can be an explosion structure.
[0009]
Features of stationary type horizontal hazardous materials tank having a Ho爆structure according to claim 2 of the present invention, the U-shaped cross section body portion of the tank is upright side walls of the upper half and straight cylindrical disposed horizontally will become the top plate with tilt between the side wall upper end opposite the body portion, and a side plate made of both ends straight plate of the barrel portion, a configuration in which joining arranged with each L-shaped cross section top angle of In addition, the joint portion between the top plate with the inclination and the top angle of the upper portion of the trunk portion and the upper portion of the side plate is made weaker than the other joint portions of the tank to form an explosion structure.
In this way, the body portion based on the cylindrical shape that is horizontally arranged is made into a U- shaped section with a specific shape, and when the top plate is inclined and the side plates at both ends are straight plates and joined using the top angle , By adopting a detonation structure by making the joint between the top plate with an inclination and the top angle of the upper part of the trunk and the upper part of the side plate weaker than the other joints of the tank, it is a relatively small capacity, vertical cylinder type Compared to a tank, drainage is easier to drain, the bottom plate is less corroded, and it is cheaper, and an explosion structure can be achieved.
The feature of the stationary horizontal dangerous goods tank having the detonation structure according to claim 3 of the present invention is that, in the stationary dangerous goods tank having the detonation structure according to claim 2, an operator directly rides on the top plate. It is a roof-type roof with a slope that can be worked.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Ho爆structure of the present invention, the stationary-type lateral hazardous materials tank, by a U-shaped cross section in which the top half straight torso which is horizontally disposed from cylindrical, to the left and right end plate (the plate) and straight plate In the top plate portion arranged and joined to the upper portion of the trunk portion, the same explosion structure as that of the existing cone roof tank can be obtained, and replacement or new installation can be performed without impairing the conventional advantages of the cylindrical type. In addition, the top plate can be a flat or inclined roof type, and has a structure in which an operator can directly ride on the top plate.
[0011]
In addition, if the top plate is a flat or inclined roof type and has a structure in which an operator can work directly on the top plate, an operation deck is not required only by handrails.
[0012]
In the detonation structure of the present invention, a flat top plate is used to weaken the joint between the top plate of the stationary horizontal dangerous goods tank and the top angle of the upper part of the trunk and the upper side plate than the other joints of the tank. And the fillet size of the welded portion between the upper portion of the body and the top angle of the upper portion of the side plate is made smaller than the other portions.
[ 0013 ]
In particular, in the case of a stationary horizontal dangerous goods tank, if the capacity is the same, the existing radius can be about 85%, the tank can be reduced in size, and the manufacturing cost can be reduced accordingly. Further, since the trunk portion changes from a cylindrical shape to a U-shape, and an operator can ride directly on the top plate, an operation deck is not required only by handrails. Furthermore, since the fluctuation of the liquid level in the tank becomes linear, the liquid level can be easily managed .
[ 0014 ]
【Example】
Will be described with reference to the FIGS. 1-3 showing an example of implementation details of Ho爆structural stationary formula hazardous materials tank of the present invention follows. FIG. 1 is a side view of a stationary horizontal dangerous goods tank of the present invention, FIG. 2 is a front view of the stationary horizontal dangerous goods tank of the present invention , and FIG. 3 is an enlarged sectional view showing an example of an explosion structure.
[ 0015 ]
1 and 2, reference numeral 1 denotes a stationary horizontal dangerous goods tank, and 2 denotes a U-shaped body section of the stationary horizontal dangerous goods tank 1. Reference numeral 3 denotes a U-shaped straight plate joined to both ends of the body portion 2 having a U-shaped cross section, and 4 denotes a top plate provided on the roof of the body portion 2 and the U-shaped direct plate 3. The top plate 4, as shown in FIG. 3, the top angle 5 of the upper part of the body portion 2 and the U-shaped straight plate 3 is welded and fixed to reduce the size of the meat 6 corner than the other welds, stationary type horizontal When the pressure in the dangerous substance tank 1 rises abnormally, the internal gas or steam breaks the fillet 6 parts and releases it to the upper part. Reference numeral 7 denotes a handrail provided around the top plate 4.
[ 0016 ]
As described above, in the stationary-type horizontal hazardous material tank 1, a barrel 2 and U-shaped cross section, by both ends of the body portion 2 by joining U-shaped straight plate 3, the top of the straight plate or with inclined roof The conventional stationary horizontal cylindrical shape that can take an explosion structure as the plate 4, has a relatively small capacity, is easier to drain than the vertical cylindrical tank, has little corrosion on the bottom plate, and is inexpensive. The characteristics of the tank are not impaired. In addition, by providing the handrail 7 around the top plate 4, an operator can directly ride on the top plate 4 and work is not required.
[ 0017 ]
【The invention's effect】
The stationary dangerous goods tank having the detonation structure of the present invention is a conventional cylindrical tank that has a relatively small capacity, is easier to drain drain than a vertical cylindrical tank, has little corrosion on the bottom plate, and is inexpensive. Without detracting from the characteristics of the structure, it is possible to provide a detonation structure, and because the worker can work directly on the top board, the conventional work deck can be dispensed with.
[Brief description of the drawings]
FIG. 1 is a side view of a stationary horizontal dangerous goods tank according to the present invention.
FIG. 2 is a front view of a stationary horizontal dangerous goods tank according to the present invention.
FIG. 3 is an enlarged sectional view showing an example of an explosion structure according to the present invention.
FIG. 4 is an enlarged cross-sectional view showing an example of a conventional cylindrical tank detonation structure.
[Explanation of symbols]
1 Stationary horizontal dangerous goods tank
2 trunk 3 U-shaped straight plate
4 Top 4
5, 5 2 top angle 6, 5 4 fillet
7 handrails 51 Side plate 53 Roof plate 55 Rafta

Claims (3)

置式横型危険物タンクであって、タンクの胴部が水平配置される円筒型でその上側半分の側壁をストレートに直立させた断面U字型からなり該胴部の対向する前記側壁上端間にフラットの天板を、そして該胴部の両端に直板からなる側板を、それぞれ断面 L 字型のトップアングルを用いて接合配置した構成からなり、フラットの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くして放爆構造としたことを特徴とする放爆構造を有する危険物タンク。A postfix expression horizontal hazardous material tank made U-shaped cross section body portion of the tank is upright side walls of the upper half and straight cylindrical disposed horizontally, between the side wall upper end opposite the body portion A flat top plate, and side plates made of straight plates at both ends of the body part are joined and arranged using L -shaped top angles , respectively . Dangerous goods tank having a detonation structure, characterized in that the joint portion with the top angle is made weaker than the other joint portions of the tank to form a detonation structure. 置式横型危険物タンクであって、タンクの胴部が水平配置される円筒型でその上側半分の側壁をストレートに直立させた断面U字型からなり該胴部の対向する前記側壁上端間に傾斜付きの天板を、そして該胴部の両端に直板からなる側板を、それぞれ断面 L 字型のトップアングルを用いて接合配置した構成からなり、傾斜付きの天板と胴部上部および側板上部のトップアングルとの接合部を、タンクの他の接合部よりも弱くして放爆構造としたことを特徴とする放爆構造を有する危険物タンク。A postfix expression horizontal hazardous material tank made U-shaped cross section body portion of the tank is upright side walls of the upper half and straight cylindrical disposed horizontally, between the side wall upper end opposite the body portion The top plate with a slope, and the side plate made of a straight plate at both ends of the body portion are joined and arranged using a top angle with an L -shaped cross section. Dangerous goods tank having a detonation structure, characterized in that a joint portion with an upper top angle is made weaker than other joint portions of the tank to form a detonation structure. 作業員が直接乗って作業できる傾斜付きの屋根型天板であることを特徴とする請求項2記載の放爆構造を有する危険物タンク。  3. The hazardous material tank having an explosion structure according to claim 2, wherein the roof-type top plate has an inclined surface on which an operator can directly ride and work.
JP2000396621A 2000-12-27 2000-12-27 Dangerous goods tank with detonation structure Expired - Fee Related JP4119087B2 (en)

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JP4119087B2 true JP4119087B2 (en) 2008-07-16

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