JPH078189U - Chemical tanker - Google Patents

Chemical tanker

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Publication number
JPH078189U
JPH078189U JP4268093U JP4268093U JPH078189U JP H078189 U JPH078189 U JP H078189U JP 4268093 U JP4268093 U JP 4268093U JP 4268093 U JP4268093 U JP 4268093U JP H078189 U JPH078189 U JP H078189U
Authority
JP
Japan
Prior art keywords
partition
cargo
bulkhead
chemical tanker
double
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.)
Granted
Application number
JP4268093U
Other languages
Japanese (ja)
Other versions
JP2596861Y2 (en
Inventor
隆明 平田
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1993042680U priority Critical patent/JP2596861Y2/en
Publication of JPH078189U publication Critical patent/JPH078189U/en
Application granted granted Critical
Publication of JP2596861Y2 publication Critical patent/JP2596861Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

(57)【要約】 【目的】 ケミカルタンカーにおいて、カーゴタンク相
互を仕切る隔壁を改善して、コルゲート加工を不要と
し、溶接性を高めるとともに、安全性の向上もはかるも
のである。 【構成】 ケミカルタンカーにおけるカーゴタンク8の
相互間を仕切る中央縦隔壁を2枚の互いに平行な隔壁板
1,1と同隔壁板相互を連結する補強板とからなる2重
隔壁構造とし、横隔壁についても同様に2枚の互いに平
行な隔壁板2,2と同隔壁板相互を連結する補強板とか
らなる2重隔壁構造とする。そして、各隔壁板1,2と
しては、そのカーゴタンク側をステンレス鋼とし2重隔
壁内部側を炭素鋼とするステンレスクラッド鋼板を採用
した。
(57) [Abstract] [Purpose] In a chemical tanker, the partition that separates cargo tanks from each other has been improved to eliminate the need for corrugation, improve weldability, and improve safety. A central vertical partition for partitioning cargo tanks 8 in a chemical tanker has a double partition structure including two parallel partition plates 1 and 1 and a reinforcing plate connecting the partition plates, and a horizontal partition. Similarly, a double partition structure is formed by two partition walls 2 and 2 which are parallel to each other and a reinforcing plate which connects the partition plates to each other. As the partition plates 1 and 2, a stainless clad steel plate having a cargo tank side made of stainless steel and an inner side of the double partition made of carbon steel was adopted.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、化学薬品等の液体貨物を輸送するためのケミカルタンカーに関し、 特にそのカーゴタンクの構造の改善をはかったケミカルタンカーに関する。 The present invention relates to a chemical tanker for transporting liquid cargo such as chemicals, and more particularly to a chemical tanker with an improved cargo tank structure.

【0002】[0002]

【従来の技術】[Prior art]

従来のケミカルタンカーとしては図5(平面図)に示すようなものがあり、そ のカーゴタンク18は腐食防止のためにステンレス鋼で構成されている。そして両 面が液体貨物と接する中央縦隔壁11や横隔壁12には全ステンレス鋼板(以下、ソ リッド鋼板という。)が使用され、片面が貨物と接する船側縦隔壁13,内底板14 および図示しない上甲板は炭素鋼とステンレス鋼との接合鋼板(以下、クラッド 鋼板という。)が使用されている。 そして、ソリッド鋼板の使用部である中央縦隔壁11や横隔壁12は、剛性向上の ために通常は図示のごとくコルゲート加工を施されている。 There is a conventional chemical tanker as shown in FIG. 5 (plan view), and the cargo tank 18 is made of stainless steel to prevent corrosion. All stainless steel plates (hereinafter referred to as solid steel plates) are used for the central vertical bulkheads 11 and horizontal bulkheads 12, both sides of which are in contact with liquid cargo, and the ship-side vertical bulkheads 13, inner bottom plates 14 and not shown of which one side is in contact with cargo. As the upper deck, a joined steel plate of carbon steel and stainless steel (hereinafter referred to as a clad steel plate) is used. Further, the central vertical partition wall 11 and the horizontal partition wall 12, which are used parts of the solid steel plate, are usually corrugated as shown in order to improve rigidity.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

ところで、前述のような従来のケミカルタンカーでは、中央縦隔壁11や横隔壁 12が1枚であり、隔壁が損傷した場合貨物が隣接する他のタンクに流入し貨物に よっては爆発の危険性がある。また貨物によっては保温輸送の必要もあるが、隣 接タンクの保温温度が異なる場合は保温効率が悪い。さらに図7に示すように、 応力条件が厳しい中央縦隔壁11や横隔壁12と内底板14との隅肉溶接は、開先加工 を施した多層盛で大脚長とする必要があり、その入熱量が大きいためクラッド鋼 板におけるステンレス鋼と炭素鋼との接合界面に亀裂を生じることがある。 また、中央縦隔壁11や横隔壁12は、剛性向上のためコルゲート加工を施す必要 があり、多額の加工費を要するほか、溶接に際し、コルゲート加工部を多層盛す る必要があり、溶接の自動化が計れない。 By the way, in the conventional chemical tanker as described above, the central vertical bulkhead 11 and the horizontal bulkhead 12 are one piece, and if the bulkhead is damaged, the cargo flows into another adjacent tank, and there is a risk of explosion depending on the cargo. is there. Also, depending on the cargo, it is necessary to carry out heat insulation transportation, but if the heat insulation temperature of the adjacent tank is different, the heat insulation efficiency is poor. Further, as shown in Fig. 7, fillet welding between the central vertical bulkhead 11 and horizontal bulkhead 12 and the inner bottom plate 14 under severe stress conditions requires a grooved multi-layer weld and a large leg length. Since the amount of heat is large, cracks may occur at the joint interface between stainless steel and carbon steel in the clad steel plate. In addition, the central vertical bulkheads 11 and the horizontal bulkheads 12 need to be corrugated in order to improve rigidity, which requires a large amount of machining cost.Moreover, when welding, corrugated parts need to be multi-layered. Cannot be measured.

【0004】 載荷物が異なる場合、カーゴタンク内を洗浄し洗浄液を中和する等の化学処理 を行なう必要があるが、寄港中に洗浄処理作業をするには多くの時間を要する。 そして、どの港にも洗浄液の廃棄設備があるわけでは無く、その場合には洗浄液 を積んだまま航行する必要がある等の問題点がある。 本考案は、上述のような問題点の解消をはかろうとするもので、カーゴタンク 相互を仕切る隔壁を2枚の隔壁板からなる2重隔壁とすることにより、コルゲー ト加工を不要とし、溶接性を高めるとともに安全性の向上もはかれるようにする ほか、2重隔壁内部を多目的に使用できるようしたケミカルタンカーを提供する ことを目的とする。When the load is different, it is necessary to carry out a chemical treatment such as washing the inside of the cargo tank to neutralize the washing liquid, but it takes a lot of time to carry out the washing work while calling. Further, not all ports have a cleaning liquid disposal facility, and in that case, there is a problem in that it is necessary to sail with the cleaning liquid loaded. The present invention is intended to solve the above-mentioned problems, and by forming the partition wall separating the cargo tanks from each other by a double partition wall composed of two partition plates, corrugation processing is unnecessary and welding is performed. The purpose of the chemical tanker is not only to improve the safety but also to improve the safety, but also to provide a chemical tanker that can be used for multiple purposes inside the double partition wall.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

前述の目的を達成するため、本考案のケミカルタンカーは、化学薬品等の液体 貨物を収容するカーゴタンクをそなえたケミカルタンカーにおいて、互いに隣接 するカーゴタンクの相互間がそれぞれ2枚の互いに平行な隔壁板と同隔壁板相互 を連結する補強板とからなる2重隔壁としての中央縦隔壁および多数の横隔壁で 仕切られて、上記隔壁板が上記液体貨物と接するカーゴタンク側をステンレス鋼 とし上記2重隔壁内部側を炭素鋼とするステンレスクラッド鋼で形成されたこと を特徴としている。 In order to achieve the above-mentioned object, the chemical tanker of the present invention is a chemical tanker equipped with a cargo tank for storing liquid cargo such as chemicals, and two mutually parallel partition walls between adjacent cargo tanks. Partitioned by a central vertical bulkhead and a large number of horizontal bulkheads as double bulkheads consisting of a plate and a reinforcing plate that connects the bulkhead plates to each other, the cargo tank side where the bulkhead plate comes into contact with the liquid cargo is made of stainless steel. It is characterized in that it is made of stainless clad steel with the inside of the heavy partition being carbon steel.

【0006】[0006]

【作用】[Action]

上述の本考案のケミカルタンカーでは、カーゴタンク相互を仕切る隔壁が、液 体貨物と接するカーゴタンク側をステンレス面とされ、多目的に使用される2重 隔壁内部側を炭素鋼面とされるように、クラッド鋼の平板を2重にして使用され るので、液体貨物に対する耐腐食性は損なわれず、また従来のコルゲート式隔壁 板の場合と比べて内底板との溶接が容易に行なわれるようになる。 さらに、タンク強度上最も重要となる隔壁の曲げ剛性を従来のコルゲート式隔 壁と同等にした場合、材料費の目安となる断面積が著しく減少し、大幅なコスト の低下が期待される。 In the above-described chemical tanker of the present invention, the partition wall separating the cargo tanks has a stainless steel surface on the side of the cargo tank in contact with the liquid cargo, and a carbon steel surface on the inside of the double partition, which is used for multiple purposes. Since the clad steel flat plate is used as a double layer, the corrosion resistance against liquid cargo is not impaired, and welding with the inner bottom plate is easier than in the case of the conventional corrugated bulkhead plate. . Furthermore, if the bending rigidity of the bulkhead, which is the most important factor in tank strength, is made equal to that of a conventional corrugated partition, the cross-sectional area, which is a measure of material cost, will be significantly reduced, and a significant cost reduction is expected.

【0007】[0007]

【実施例】 以下、図面により本考案の一実施例としてのケミカルタンカーについて説明す ると、図1はその水平断面図、図2は図1のA−A矢視断面図、図3はその中央 縦隔壁の一部を拡大して示す断面図、図4はその中央縦隔壁における隔壁板の船 体内底板との溶接部を拡大して示す断面図である。EXAMPLE A chemical tanker as an example of the present invention will be described below with reference to the drawings. FIG. 1 is a horizontal sectional view thereof, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. FIG. 4 is an enlarged cross-sectional view showing a part of the central longitudinal bulkhead, and FIG. 4 is an enlarged sectional view showing a welded portion of the central longitudinal bulkhead with the bulkhead plate with the bottom plate of the ship.

【0008】 図1,2に示すように、化学薬品等の液体貨物を輸送するためのケミカルタン カーにおいて、2枚の互いに平行な隔壁板1,1を有する2重隔壁としての中央 縦隔壁と、2枚の互いに平行な隔壁板2,2を有する2重隔壁としての多数の横 隔壁とで仕切られたカーゴタンク8が、船内に多数形成されており、各カーゴタ ンク8と船側部との間は船側縦隔壁3で仕切られている。また各カーゴタンク8 の頂部は上甲板5で形成されている。As shown in FIGS. 1 and 2, in a chemical tanker for transporting liquid cargo such as chemicals, a central vertical partition as a double partition having two partition plates 1 and 1 which are parallel to each other. A large number of cargo tanks 8 that are partitioned by a large number of horizontal bulkheads as double bulkheads having two parallel bulkhead plates 2 and 2 are formed in the ship, and the cargo tanks 8 and the side parts of the ship are separated from each other. The space is divided by a vertical partition 3 on the ship side. The top of each cargo tank 8 is formed by the upper deck 5.

【0009】 そして、船側縦隔壁3や船体内底板4としては、従来と同様に、液体貨物と接 する面にはステンレス鋼をそなえ他の片面には炭素鋼をそなえたステンレスクラ ッド鋼板が用いられている。 また、2重隔壁としての中央縦隔壁および横隔壁の内部には、各隔壁板1,1 および2,2の相互間を連結する補強板6が設けられている。(図3参照) 図3に示すように、中央縦隔壁においては平板状の各隔壁板1,1が、液体貨 物と接するカーゴタンク側をステンレス鋼1aとし2重隔壁内部7側を炭素鋼1 bとするステンレスクラッド鋼板で形成されており、2重隔壁としての横隔壁の 各隔壁板2,2についても、同様にしてステンレスクラッド鋼板が採用されてい る。As in the conventional case, the ship side vertical bulkheads 3 and the bottom plate 4 of the ship are made of stainless steel plates having stainless steel on the surface in contact with the liquid cargo and carbon steel on the other surface. It is used. Further, inside the central vertical partition and the horizontal partition as the double partition, a reinforcing plate 6 for connecting the respective partition plates 1, 1 and 2, 2 is provided. (See FIG. 3) As shown in FIG. 3, in the central vertical partition, each flat partition wall plate 1, 1 is made of stainless steel 1a on the side of the cargo tank in contact with the liquid cargo and carbon steel on the side of the double partition 7 It is formed of a stainless clad steel plate 1b, and a stainless clad steel plate is similarly used for each of the partition plates 2 and 2 of the horizontal partition as the double partition.

【0010】 図4は中央縦通隔壁における隔壁板1と内底板4との隅肉溶接部を示しており 、同隔壁板1に使用されるステンレスクラッド鋼板の板厚は従来のソリッド鋼と 比べて約1/2とされ、小脚長で高能率の溶接が可能になっている。 横隔壁の隔壁板2や船側縦隔壁3についても、内底板4との隅肉溶接部は上述 の中央縦通隔壁の隔壁板1の場合と同様であり、同様の作用効果が得られるよう になっている。 なお、2重隔壁の内部7は、廃液貯蔵タンクやバラストタンク等、多目的に使 用することができる。FIG. 4 shows a fillet welded portion between the partition plate 1 and the inner bottom plate 4 in the central longitudinal partition wall. The plate thickness of the stainless clad steel plate used for the partition plate 1 is larger than that of the conventional solid steel. The length is about 1/2, which enables high efficiency welding with a small leg length. The fillet welds with the inner bottom plate 4 are similar to those of the bulkhead plate 2 of the horizontal bulkhead and the ship-side vertical bulkhead 3 as in the case of the bulkhead plate 1 of the above-mentioned central vertical bulkhead, so that the same action and effect can be obtained. Has become. The inside 7 of the double partition can be used for various purposes such as a waste liquid storage tank and a ballast tank.

【0011】 図6は過去に建造されたケミカルタンカーにおける隔壁11のコルゲートの1ピ ッチの寸法をミリ単位で示している。この場合、曲げ剛性Is=9.97×109mm4, 断面積As=8.66×104mm2となる。 図3は上述のケミカルタンカーと同等の曲げ剛性を持つための本考案によるケ ミカルタンカーについての寸法をミリ単位で示しており、Ic=9.84×109mm4, Ac=7.7×104mm2となって、鋼材断面積は約12%少なくて済むようになる。FIG. 6 shows the size of one pitch of the corrugated wall of the partition wall 11 in a chemical tanker constructed in the past in millimeter units. In this case, the bending rigidity Is = 9.97 × 10 9 mm 4 and the cross-sectional area As = 8.66 × 10 4 mm 2 . Fig. 3 shows the dimensions of a chemical tanker according to the present invention in millimeters, which has the same bending rigidity as the above-mentioned chemical tanker. Ic = 9.84 × 10 9 mm 4 , Ac = 7.7 × 10 4 mm 2 Therefore, the cross-sectional area of steel material can be reduced by about 12%.

【0012】[0012]

【考案の効果】[Effect of device]

以上詳述したように、本考案のケミカルタンカーによれば、次のような効果が 得られる。 (1) 中央縦隔壁および横隔壁を2重隔壁の構造としたので、これらの隔壁が損傷 した場合に、隣接するカーゴタンクの相互間で液体貨物の流出を生じることがな く、安全性を確保できるようになる。 (2) 隣接するカーゴタンクの相互間が2重隔壁で仕切られるため保温効率が損な われない。 (3) 2重隔壁の内部は、タンク洗浄液貯蔵タンクや消化液,不活性ガスタンク, バラストタンク等に多目的に使用できる。また、航行中に空タンクを洗浄し、洗 浄液を2重隔壁内部に貯蔵して中和処理を行ない、運航効率を上げることができ る。さらに消化液や不活性ガスを2重隔壁内部に常備して、安全性を確保できる 利点もある。 (4) ソリッド鋼に対し安価なクラッド鋼が全て採用可能で、鋼材費用が約63%に 軽減できる(鋼材価格比1.43:1,重量比1.12:1)うえ、コルゲート加工が不 要になる利点もある。 (5) 使用鋼板の板厚が従来の場合に比べて約1/2となり、しかも直線構造になる ため隅肉溶接が1層で小脚長で良く、入熱量が少なく炭素鋼とステンレス鋼との 界面に亀裂を生じることもない。したがって、溶接作業も容易となり、自動溶接 化がはかれる。また、ブロック建造化も容易になる。 As described in detail above, according to the chemical tanker of the present invention, the following effects can be obtained. (1) Since the central vertical bulkhead and horizontal bulkhead have a double bulkhead structure, if these bulkheads are damaged, liquid cargo will not flow out between adjacent cargo tanks, and safety will be improved. You will be able to secure. (2) Since the adjacent cargo tanks are separated from each other by a double partition, the heat insulation efficiency is not impaired. (3) The inside of the double partition can be used for multiple purposes such as tank cleaning liquid storage tank, digestive liquid, inert gas tank, ballast tank, etc. In addition, the empty tanks can be washed during navigation and the washing liquid can be stored inside the double bulkheads for neutralization to improve the operating efficiency. Furthermore, there is an advantage that the digestive juice and the inert gas are always kept inside the double partition to ensure safety. (4) It is possible to use all of the cheap clad steels against solid steels, reducing the steel material cost to about 63% (steel material price ratio 1.43: 1, weight ratio 1.12: 1) and the advantage that corrugating is unnecessary. There is also. (5) Compared to the conventional case, the thickness of the steel plate used is about 1/2, and since it has a linear structure, fillet welding is a single layer with a small leg length, heat input is small and carbon steel and stainless steel No cracks occur at the interface. Therefore, welding work becomes easy and automatic welding can be achieved. In addition, building blocks becomes easy.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の一実施例としてのケミカルタンカーを
示す水平断面図である。
FIG. 1 is a horizontal sectional view showing a chemical tanker as an embodiment of the present invention.

【図2】図1のA−A矢視断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.

【図3】図1,2のケミカルタンカーにおける中央縦隔
壁の一部を拡大して示す断面図である。
FIG. 3 is an enlarged cross-sectional view showing a part of a central vertical partition in the chemical tanker of FIGS.

【図4】図1,2のケミカルタンカーにおける中央縦隔
壁の隔壁板と船体内底板との溶接部を示す断面図であ
る。
FIG. 4 is a cross-sectional view showing a welded portion between the partition plate of the central vertical partition wall and the bottom plate of the ship in the chemical tanker of FIGS.

【図5】従来のケミカルタンカーの水平断面図である。FIG. 5 is a horizontal sectional view of a conventional chemical tanker.

【図6】図5のケミカルタンカーにおける中央縦隔壁の
コルゲートの1ピッチを示す説明図である。
FIG. 6 is an explanatory diagram showing one pitch of corrugations of a central vertical partition in the chemical tanker of FIG.

【図7】図6の中央縦隔壁と船体内底板との溶接部を示
す断面図である。
7 is a cross-sectional view showing a welded portion between the central vertical bulkhead and the bottom plate of the ship in FIG.

【符号の説明】[Explanation of symbols]

1 中央縦隔壁の隔壁板 1a ステンレス鋼 1b 炭素鋼 2 横隔壁の隔壁板 3 船側縦隔壁 4 船体内底板 5 上甲板 6 補強板 7 2重隔壁内部 8 カーゴタンク 1 Central vertical bulkhead bulkhead plate 1a Stainless steel 1b Carbon steel 2 Horizontal bulkhead bulkhead plate 3 Ship side vertical bulkhead 4 Inboard bottom plate 5 Upper deck 6 Reinforcement plate 7 Double bulkhead inside 8 Cargo tank

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 化学薬品等の液体貨物を収容するカーゴ
タンクをそなえたケミカルタンカーにおいて、互いに隣
接するカーゴタンクの相互間がそれぞれ2枚の互いに平
行な隔壁板と同隔壁板相互を連結する補強板とからなる
2重隔壁としての中央縦隔壁および多数の横隔壁で仕切
られて、上記隔壁板が上記液体貨物と接するカーゴタン
ク側をステンレス鋼とし上記2重隔壁内部側を炭素鋼と
するステンレスクラッド鋼で形成されたことを特徴とす
る、ケミカルタンカー。
1. A chemical tanker having a cargo tank for containing a liquid cargo such as chemicals, wherein two cargo tanks adjacent to each other are reinforced such that two mutually parallel partition plates are connected to each other. A stainless steel which is partitioned by a central vertical bulkhead as a double bulkhead and a large number of horizontal bulkheads, and the cargo tank side in contact with the liquid cargo is stainless steel and the inside of the double bulkhead is carbon steel. A chemical tanker characterized by being formed of clad steel.
JP1993042680U 1993-07-07 1993-07-07 Chemical tanker Expired - Lifetime JP2596861Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1993042680U JP2596861Y2 (en) 1993-07-07 1993-07-07 Chemical tanker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1993042680U JP2596861Y2 (en) 1993-07-07 1993-07-07 Chemical tanker

Publications (2)

Publication Number Publication Date
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006507984A (en) * 2002-11-30 2006-03-09 デ ノルスケ ヴェリタス アクティーゼルスカブ Ship structure and ship structure
JP2006123814A (en) * 2004-10-29 2006-05-18 Ihi Marine United Inc Vessel
JP2008279968A (en) * 2007-05-14 2008-11-20 Shin Kurushima Dockyard Co Ltd Structure of freight tank of liquid chemical transport ship
JP2015514044A (en) * 2012-04-11 2015-05-18 ホカン・ロセン Ship hull and ship
JP2016150695A (en) * 2015-02-18 2016-08-22 三菱重工業株式会社 Ship
EP3168133A4 (en) * 2014-07-10 2018-04-25 Liping Jiang Elastic structure anti-impact frame body

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006507984A (en) * 2002-11-30 2006-03-09 デ ノルスケ ヴェリタス アクティーゼルスカブ Ship structure and ship structure
JP2006123814A (en) * 2004-10-29 2006-05-18 Ihi Marine United Inc Vessel
JP2008279968A (en) * 2007-05-14 2008-11-20 Shin Kurushima Dockyard Co Ltd Structure of freight tank of liquid chemical transport ship
JP4558759B2 (en) * 2007-05-14 2010-10-06 株式会社新来島どっく Cargo tank structure of liquid chemical transport ship
JP2015514044A (en) * 2012-04-11 2015-05-18 ホカン・ロセン Ship hull and ship
EP3168133A4 (en) * 2014-07-10 2018-04-25 Liping Jiang Elastic structure anti-impact frame body
JP2016150695A (en) * 2015-02-18 2016-08-22 三菱重工業株式会社 Ship

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