JPH0799239B2 - Low temperature liquefied gas tank - Google Patents
Low temperature liquefied gas tankInfo
- Publication number
- JPH0799239B2 JPH0799239B2 JP1284302A JP28430289A JPH0799239B2 JP H0799239 B2 JPH0799239 B2 JP H0799239B2 JP 1284302 A JP1284302 A JP 1284302A JP 28430289 A JP28430289 A JP 28430289A JP H0799239 B2 JPH0799239 B2 JP H0799239B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- wall
- liquefied gas
- metal
- 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.)
- Expired - Fee Related
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明はLNG等の低温液化ガスを貯蔵するタンクに関
する。TECHNICAL FIELD The present invention relates to a tank for storing a low temperature liquefied gas such as LNG.
〔発明が解決しようとする課題〕 従来の低温液化ガスタンクとしては、例えば第２図のご
とく、金属製の内外槽1,2を有する二重殻タンクが一般
に採用されていた。この従来のタンクは側壁下部に液出
入口の配管３が配設してあり、この配管は金属製内外槽
1,2の側壁を貫通する構造となっていた。このために液
入後の運転中に低温による内槽材の金属の収縮、液位変
動による繰返し応力、地震時の応力等により、配管と内
槽側壁金属との接続部に複雑な応力が生じる等の構造上
の問題があった。[Problems to be Solved by the Invention] As a conventional low temperature liquefied gas tank, for example, as shown in FIG. 2, a double shell tank having metal inner and outer tanks 1 and 2 is generally adopted. In this conventional tank, a pipe 3 for a liquid inlet / outlet is arranged at a lower portion of a side wall, and this pipe is a metal inner / outer tank.
It had a structure that penetrated the side walls of 1 and 2. For this reason, during operation after liquid is filled, complicated stress is generated at the connection between the pipe and the sidewall metal of the inner tank due to contraction of the metal of the inner tank material due to low temperature, repeated stress due to liquid level fluctuation, stress during earthquakes, etc. There was a structural problem such as.
また、従来の金属製内外槽からなるタンクの外槽は内外
槽間に充填した断熱材の吸湿防止と乾燥不活性ガスの封
入を主目的としたもので、タンク内の液化ガスの圧に耐
える強度を備えていなかった。このため、従来はタンク
の周囲に防液堤を設置しなければならなかった。In addition, the outer tank of the conventional metal inner / outer tank has the main purpose of preventing moisture absorption of the heat insulating material filled between the inner and outer tanks and enclosing dry inert gas, and withstands the pressure of liquefied gas in the tank. It did not have strength. For this reason, conventionally, it has been necessary to install a dike around the tank.
最近は外槽側面をプレストレストコンクリート造外壁と
した二重殻構造としたり、あるいは第３図のように既設
の金属製内外槽を有する二重殻タンク４の側面にプレス
トレストコンクリート造の外壁５を形成して外壁に液化
ガスの圧に耐える強度を付与する構造が提案されてい
る。しかし、この様な構造としても、液出入口の配管３
には前記の構造上の問題があり、タンク本体の安全性と
同等の安全性を配管部にも付与する必要があった。Recently, a double-shell structure has been used in which the outer tank side surface is a prestressed concrete outer wall, or as shown in FIG. 3, a prestressed concrete outer wall 5 is formed on the side surface of a double-shell tank 4 having an existing metal inner and outer tank. Then, a structure has been proposed in which the outer wall is provided with strength to withstand the pressure of liquefied gas. However, even with such a structure, the pipe 3 of the liquid inlet / outlet port
However, there is a problem in the structure described above, and it is necessary to provide the pipe section with safety equivalent to that of the tank body.
この発明は上記問題点を着目しなされたものである。The present invention has been made in view of the above problems.
この発明の要旨は、（Ａ）金属製内槽と金属製外槽を有
する二重殻タンクの外槽の周囲にブレストレストコンク
リート造外壁を、その一部が二重殻タンクの屋根より高
くなるよう形成し、（Ｂ）液出入口の配管はタンクの屋
根の貫通させるとともに金属製内槽と金属製外槽の少な
くとも一方に伸縮継手を介して連結し、（Ｃ）ブレスト
レストコンクリート造外壁最高部には内側に向けて配管
支持架台を設けて、この支持架台により配管を支持する
ことを特徴とする低温液化ガスタンクにある。The gist of the present invention is (A) an outer wall of a double-shell tank having a metal inner tank and a metal outer tank, and an outer wall made of a brestless concrete, part of which is higher than the roof of the double-shell tank. (B) The liquid inlet / outlet piping penetrates the roof of the tank and is connected to at least one of the metal inner tank and the metal outer tank via expansion joints, and A low-temperature liquefied gas tank is characterized in that a pipe support stand is provided inwardly, and the pipe is supported by this support stand.
以下図示する実施例による説明する。 A description will be given below with reference to the illustrated embodiment.
第１図は金属製の内槽１、外槽２を有する二重殻タンク
４の外槽２の周囲にプレストレストコンクリート造の外
壁５を形成した低温液化ガスタンクである。外壁５は少
なくともその一部が二重殻タンクの屋根より高くなるよ
う形成される。全体として高くなるよう形成してもよい
し、大部分は外槽２の側壁と同程度の高さであり、一部
のみが二重殻タンクの屋根より高くなるよう形成しても
よい。このタンクは地中に建込んだ基礎杭６および基礎
版７の上に構築してあり、内外槽間には断熱材が充填し
てある。FIG. 1 shows a low temperature liquefied gas tank in which a prestressed concrete outer wall 5 is formed around an outer tank 2 of a double shell tank 4 having an inner tank 1 and an outer tank 2 made of metal. The outer wall 5 is formed so that at least a part thereof is higher than the roof of the double shell tank. It may be formed to be higher as a whole, or most of it may be formed to have the same height as the side wall of the outer tank 2 and only a part thereof to be higher than the roof of the double shell tank. This tank is built on the foundation pile 6 and foundation plate 7 built in the ground, and the heat insulating material is filled between the inner and outer tanks.
このタンクの液出入口の配管３は、タンク底部から垂直
に立上がり、内槽１、外槽２の屋根を貫通してタンク外
に延びるよう配設してあり、タンク上方においてプレス
トレストコンクリート造の外壁５頂部に設けた支持架台
８で支持されている。この配管３が内槽１、外槽２を貫
通する箇所はベローズによる伸縮継手９により連結（ベ
ローズの一端を内槽１または外槽２に固着し、他端を配
管３の表面に固着する）し、温度変化に起因する配管３
や内槽１、外槽２の伸縮による相対位置の変動に対応し
ながら気密性を保つように連結してある。なお、第１図
では伸縮継手９を内槽１、外槽２ともに伸縮継手９を介
して配管３と連結した例を図示したが伸縮継手９による
連結は内槽１または外槽２の何れか一方のみとし、他方
は気密性を保ちながら摺動し得る構造としてもよい。The piping 3 of the liquid inlet / outlet of the tank is arranged so as to rise vertically from the bottom of the tank and extend through the roof of the inner tank 1 and the outer tank 2 to the outside of the tank. It is supported by a support frame 8 provided at the top. The place where this pipe 3 penetrates the inner tank 1 and the outer tank 2 is connected by an expansion joint 9 by a bellows (one end of the bellows is fixed to the inner tank 1 or the outer tank 2, and the other end is fixed to the surface of the pipe 3). And piping 3 caused by temperature changes
The inner tank 1 and the outer tank 2 are connected so as to maintain airtightness while coping with changes in relative position due to expansion and contraction of the inner tank 1 and the outer tank 2. Although FIG. 1 illustrates an example in which the expansion joint 9 is connected to the pipe 3 through the expansion joint 9 for both the inner tank 1 and the outer tank 2, the expansion joint 9 is connected to either the inner tank 1 or the outer tank 2. Only one may be provided, and the other may have a structure capable of sliding while maintaining airtightness.
この低温液化ガスタンクは以上の構成からなり、金属製
内槽と金属製外槽を有する二重殻タンクの外槽の周囲に
プレストレストコンクリート造の外壁がある二重殻構造
であって、液出入口配管はタンク頂部の屋根を貫通して
配設してあり、しかも、この配管はプレストレストコン
クリート造の外壁頂部に設けた支持架台にて支持する構
造であるため、（１）配管は側壁を貫通して配設する必
要がない。（２）金属槽の屋根部材を何ら補強すること
なく、吊り下げ方式の液出入用配管を配設することが可
能となる。（３）は貫通部の屋根部材にかかる応力歪が
少ない。（４）貫通部の屋根部材に特別の材料を使用す
る必要はない。This low temperature liquefied gas tank has the above-mentioned structure, and has a double-shell structure with a prestressed concrete outer wall around the outer tank of a double-shell tank having a metal inner tank and a metal outer tank. Is installed through the roof at the top of the tank, and because this pipe is supported by a support stand installed at the top of the outer wall of the prestressed concrete structure, (1) the pipe passes through the side wall. No need to arrange. (2) It is possible to dispose a suspension type liquid supply / removal pipe without reinforcing the roof member of the metal tank. In the case of (3), the stress strain applied to the roof member at the through portion is small. (4) It is not necessary to use a special material for the roof member of the penetration part.
従って液出入口配管の安全性が高く、プレストレストコ
ンクリート造の外壁と組合せたタンク全体としての安全
性を高めることができる。Therefore, the safety of the liquid inlet / outlet piping is high, and the safety of the entire tank combined with the outer wall made of prestressed concrete can be increased.
この発明は以上の通りであり、この低温液化ガスタンク
は液出入口の配管部分の安全性が高く、外側面のプレス
トレストコンクリート造外壁と組合せ、高い安全性を発
揮する。同時に防液堤が不要となり、用地の効率活用が
可能となる。The present invention is as described above, and this low temperature liquefied gas tank has high safety in the piping portion of the liquid inlet / outlet, and exhibits high safety in combination with the outer wall of the prestressed concrete outer wall. At the same time, a breakwater is not required and the site can be used efficiently.
第１図は実施例の低温液化ガスタンクの縦断面図、第2,
3図は従来の金属製内外槽を有する二重殻タンク、およ
びその外周にプレストレストコンクリート造外壁を形成
した二重殻タンクである。 １……内槽、２……外槽、３……液出入口配管、４……
二重殻タンク、５……プレストレストコンクリート造外
壁、６……基礎杭、７……基礎版、８……支持架台、９
……伸縮継手。FIG. 1 is a longitudinal sectional view of a low temperature liquefied gas tank of the embodiment,
Figure 3 shows a conventional double-shell tank with a metal inner and outer tank, and a double-shell tank with a prestressed concrete outer wall formed on the outer circumference. 1 ... Inner tank, 2 ... Outer tank, 3 ... Liquid inlet / outlet piping, 4 ...
Double-shell tank, 5 ... Prestressed concrete outer wall, 6 ... Foundation pile, 7 ... Foundation plate, 8 ... Support platform, 9
……Expansion joints.
Claims (1)
重殻タンクの外槽の周囲にブレストレストコンクリート
造外壁を、その一部が二重殻タンクの屋根より高くなる
よう形成し、（Ｂ）液出入口の配管はタンクの屋根の貫
通させるとともに金属製内槽と金属製外槽の少なくとも
一方に伸縮継手を介して連結し、（Ｃ）ブレストレスト
コンクリート造外壁最高部には内側に向けて配管支持架
台を設けて、この支持架台により配管を支持することを
特徴とする低温液化ガスタンク。(A) An outer wall of a double-shell tank having a metal inner tank and a metal outer tank is provided with a breathable concrete outer wall, a part of which is higher than the roof of the double-shell tank. (B) The liquid inlet / outlet piping penetrates the roof of the tank and is connected to at least one of the metal inner tank and the metal outer tank via expansion joints, and (C) is the highest part of the braceless concrete outer wall. Is a low-temperature liquefied gas tank characterized in that a pipe support stand is provided inward, and the pipe is supported by this support stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1284302A JPH0799239B2 (en) | 1989-10-31 | 1989-10-31 | Low temperature liquefied gas tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1284302A JPH0799239B2 (en) | 1989-10-31 | 1989-10-31 | Low temperature liquefied gas tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03144198A JPH03144198A (en) | 1991-06-19 |
| JPH0799239B2 true JPH0799239B2 (en) | 1995-10-25 |
Family
ID=17676771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1284302A Expired - Fee Related JPH0799239B2 (en) | 1989-10-31 | 1989-10-31 | Low temperature liquefied gas tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0799239B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336280A (en) * | 2005-06-01 | 2006-12-14 | Ishikawajima Harima Heavy Ind Co Ltd | Maintenance management method for concrete structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814594U (en) * | 1981-07-23 | 1983-01-29 | 石川島播磨重工業株式会社 | Liquid dispensing nozzle for low temperature tank |
-
1989
- 1989-10-31 JP JP1284302A patent/JPH0799239B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03144198A (en) | 1991-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |