JPS61127999A - Low-temperature tank and construction method thereof - Google Patents

Low-temperature tank and construction method thereof

Info

Publication number
JPS61127999A
JPS61127999A JP24877284A JP24877284A JPS61127999A JP S61127999 A JPS61127999 A JP S61127999A JP 24877284 A JP24877284 A JP 24877284A JP 24877284 A JP24877284 A JP 24877284A JP S61127999 A JPS61127999 A JP S61127999A
Authority
JP
Japan
Prior art keywords
tank
low
temperature
inlet
water
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.)
Pending
Application number
JP24877284A
Other languages
Japanese (ja)
Inventor
Mitsuo Nomura
野村　光男
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP24877284A priority Critical patent/JPS61127999A/en
Publication of JPS61127999A publication Critical patent/JPS61127999A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/10—Arrangements for preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316—Water heating
    • F17C2227/0318—Water heating using seawater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0142—Applications for fluid transport or storage placed underground

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PURPOSE:To heat a bottom portion of a concrete low-temperature tank by the sea water and thereby prevent freezing of the bottom portion, by immersing at least the bottom portion of the tank into the sea water in a basin where the sea water may be circulated. CONSTITUTION:After a low-temperature tank 11 is transported into a basin 17, the sea water is supplied into a ballast tank 15 to lower the tank 11 and seat the same onto a base 18. A low-temperature liquid is stored in the low- temperature tank 11. Cold heat of the liquid stored is transmitted through the tank to the water in the basin 17 to gradually cool the water at a bottom portion of the basin 17. On the other hand, a hot sea water is introduced through an upper through-hole 21 formed through a breakwater 19, and the cold water is discharged from a lower through-hole 22. Thus, a bottom portion of the low-temperature tank 11 is heated to prevent the bottom portion of the tank 11 from being frozen.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は新規な低温タンク及びその建設方法に係り、特
にＬＮＧ、ＬＰＧ等の低温液を貯蔵するタンクを海水等
の自然熱によりヒーティングを可能にすると共にその低
温タンクの建設方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a new low-temperature tank and a method for constructing the same, and in particular, a method for heating a tank for storing low-temperature liquids such as LNG and LPG using natural heat such as seawater. The present invention relates to a method for constructing a cryogenic tank.

［従来の技術］ 一般に、ＬＮＧ、ＬＰＧ等の低温液を大量に貯蔵するタ
ンクとしては地下式低温タンクが知られている。この地
下式低温タンクは第４図に示すように地中に埋設された
有底筒体状のコンクリート製外槽１と、このコンクリー
ト製外椿１内に保冷材層２を介して張設されたメンブレ
ン３によって区画形成された内槽４とによって主に構成
されている。また外槽１と内槽４との上部間口部にはこ
れを覆うようにドーム状の屋根５が設けられ、この屋根
５には内槽４上を覆う上部保冷材層６を載置形成するた
めの吊天す１７が設けられている。[Prior Art] In general, underground low-temperature tanks are known as tanks for storing large quantities of low-temperature liquids such as LNG and LPG. As shown in Fig. 4, this underground low-temperature tank consists of a bottomed cylindrical concrete outer tank 1 buried underground, and a cold insulation layer 2 installed inside the concrete outer tank 1. It is mainly composed of an inner tank 4 partitioned by a membrane 3. Further, a dome-shaped roof 5 is provided at the upper opening of the outer tank 1 and the inner tank 4 so as to cover this, and an upper cold insulating material layer 6 covering the inner tank 4 is placed and formed on this roof 5. A hanging ceiling 17 is provided for use.

ところで、ＬＮＧ、ＬＰＧ等の低温液を大量に貯蔵する
この種の地下式低温タンクにあってはその底部に保冷材
ＦＩＪ２がｔ設されていても、低温熱が地下に伝達され
凍結を起す問題がある。タンクの底板下が凍結すると地
盤変動を起し、タンクの破損を招（結果となる。そこで
、従来これを解決するために、低温タンクの底板８下に
は凍結を防止するためのヒーティングコイル９が設けら
れている。このようにヒーティングコイル９を設けるこ
とはこれを作動させるための蒸気温水等の特別な熱源を
要すると共にヒーティングコイル９の加熱制御が必要に
なる等の問題があった。By the way, in this kind of underground cryogenic tank that stores large quantities of low-temperature liquids such as LNG and LPG, even if the cold insulation material FIJ2 is installed at the bottom, there is a problem that low-temperature heat is transmitted underground and causes freezing. There is. If the bottom plate of the tank freezes, it causes ground movement and causes damage to the tank. Conventionally, to solve this problem, a heating coil is installed under the bottom plate 8 of the low-temperature tank to prevent freezing. Providing the heating coil 9 in this way requires a special heat source such as steam hot water to operate the heating coil 9, and there are problems such as the need to control the heating of the heating coil 9. Ta.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明は従来の低温タンクの如く凍結を防止するための
加熱源を海水等の自然熱を有効に利用することを可能に
し、ヒーティングコイルを不要にしたものである。また
、ＬＮＧ、ＬＰＧ等の低温液を比較的大量に貯蔵し得る
と共にその建設を容易にすることができるものである。The present invention makes it possible to effectively utilize natural heat such as seawater as a heating source to prevent freezing, as in conventional low temperature tanks, and eliminates the need for heating coils. Furthermore, it is possible to store relatively large quantities of low-temperature liquids such as LNG and LPG, and to facilitate its construction.

即ち、本発明の目的はＬＮＧ、ＬＰＧ等の低温液を貯蔵
する低温タンクの底部加熱を海水等の自然熱によりヒー
ティングを可能にすると共にその建設を容易になし得る
低温タンク及びその建設方法を提供するものである。That is, the object of the present invention is to provide a low-temperature tank that can store low-temperature liquids such as LNG and LPG by heating the bottom of the tank using natural heat such as seawater, and also that can be easily constructed. This is what we provide.

［発明の概要］ 上記目的を達成するために、本発明に係る低温タンクは
海等から海水が循環移動するように形成された入江と、
この入江内に底部が少なくとも入江内水に浸漬されるべ
く設けられたコンクリート類の外層と、この外槽内に形
成され実質的に低温液を収容する内槽とを備えて上記入
江内にコンクリート類の外槽の底部を浸漬させることに
より入江内の海水によって加熱することによりその底部
の凍結を防止し得るように構成したものである。[Summary of the Invention] In order to achieve the above object, a cryogenic tank according to the present invention includes an inlet formed so that seawater circulates from the sea, etc.
An outer layer of concrete, the bottom of which is provided in the cove so as to be immersed in at least the water within the cove, and an inner tank formed within the outer tank and substantially containing the low-temperature liquid are provided in the cove. The bottom of the outer tank is immersed and heated by the seawater in the cove to prevent the bottom from freezing.

また本発明に係る方法はコンクリート製外槽とその外槽
内に設けられ実質的に低温液を収容する内槽とを有する
低温タンクを建造すると共に海岸等に上記タンクを収容
する入江を建設した後、該入江内に上記タンクを移送し
て入江内水にその底部を浸漬するように着座させて据付
け、爾後上記入江の海側入口に防波堤を設けると井に、
防波堤に入江内外水が循環するための循環水路を形成す
るように構成したものである。Further, the method according to the present invention includes constructing a low temperature tank having an outer tank made of concrete and an inner tank provided inside the outer tank and substantially accommodating the low temperature liquid, and constructing an inlet on the coast or the like to accommodate the tank. After that, the tank is transferred to the inlet and installed so that its bottom is immersed in the water within the inlet, and a breakwater is then installed at the sea-side entrance of the inlet.
The breakwater is constructed to form a circulation channel for the circulation of water inside and outside the inlet.

［実施例］ 以下本発明の一実施例を添付図面に従って詳述する。[Example] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

先ず、第２図に示すようにドック１０等内で低温タンク
１１を建造する。この低温タンク１１はコンクリート類
の外槽１２と、その外槽１２内に設けられた実質的に低
温液を収容するための内槽１３とから構成されている。First, as shown in FIG. 2, a low temperature tank 11 is constructed in a dock 10 or the like. This low-temperature tank 11 is composed of an outer tank 12 made of concrete, and an inner tank 13 provided within the outer tank 12 for substantially accommodating a low-temperature liquid.

コンクリート類の外槽１２は最外殻として形成され、こ
の外槽１２の内壁に保冷材１１４を介設しつつメンブレ
ンパネル等により内槽１３を形成する。An outer tank 12 made of concrete is formed as the outermost shell, and a cold insulating material 114 is interposed on the inner wall of the outer tank 12, and an inner tank 13 is formed with a membrane panel or the like.

また低温タンク１１の底部にはバラストタンク室１５が
設けられ、低温タンク１１が海上等を浮上し曳航移送し
得るように構成されている。このバラストタンク室１５
は外層１２の底部を下方に延出させてコンクリートによ
り一体的に形成され、各バラストタンク室１５には海水
等を吸水あるいは排水するための弁１６が設けられてい
る。Further, a ballast tank chamber 15 is provided at the bottom of the low temperature tank 11, and the low temperature tank 11 is configured to float on the sea or the like and be towed and transported. This ballast tank chamber 15
is integrally formed of concrete with the bottom of the outer layer 12 extending downward, and each ballast tank chamber 15 is provided with a valve 16 for absorbing or draining seawater or the like.

一方、第３図に示すように海岸等には上記低温タンク１
１を充分収容し得るための入江１７が建造される。この
入江１７の底部には上記低温タンク１１を着座させて据
付けるため基台１８が設けられる。この基台１８は低温
タンク１１の底部を支承して低温タンク１１を入江１７
内水に充分浸漬させると共に水がタンク底部においても
循環し得るように所定の間隙を隔てて設けられている。On the other hand, as shown in Figure 3, the above-mentioned cryogenic tank 1 is
A cove 17 will be constructed to accommodate 1. A base 18 is provided at the bottom of the cove 17 on which the cryogenic tank 11 is seated. This base 18 supports the bottom of the low temperature tank 11 and supports the low temperature tank 11 in the inlet 17.
They are provided at a predetermined gap so that they can be sufficiently immersed in internal water and can also circulate at the bottom of the tank.

このように入江１７が完成した後、入江１７内に海水等
を導入する。上記ドック１０内に建造された低温タンク
１１を海Ｓ上に浮上させて曳航し、第３図に示す如く海
水等が満された入江１７内に移送させる。入江１７内に
低温タンク１１を移送させた後、弁１６を開放してバラ
ストタンク杢１５内に海水を吸水し、基台１８上に降下
させて着座させて据付ける。After the cove 17 is completed in this way, seawater or the like is introduced into the cove 17. The cryogenic tank 11 built in the dock 10 is floated on the sea S and towed, and transferred to an inlet 17 filled with seawater, etc., as shown in FIG. After the low temperature tank 11 is transferred into the inlet 17, the valve 16 is opened to absorb seawater into the ballast tank base 15, and the tank is lowered onto the base 18 and installed.

このように基台１８上に据付けられた低温タング１１は
第１図に示す如く、入江１７内に導入された海水乃至入
江水に側部上方まで浸漬されることになる。入江１７内
に低温タンク１１を裾付けたのち、入江１７の海側入口
に防波堤１９を設ける。この防波堤１９には入江内外水
が循環するだの循環水路２０が形成される。この循環水
路２０は防波堤１９の上部に設けられた貫通孔２１と下
部に設けられた貫通孔２２とが構成され、入江１７の外
側にある海から高温の海水が貫通孔２１から入江１７内
に導き込まれると共に貫通孔２２から入江１７内の低温
水が海側に排水され、入江１７内の水は自然循環される
ことになる。As shown in FIG. 1, the low-temperature tongue 11 installed on the base 18 in this manner is immersed up to the upper side in seawater or cove water introduced into the cove 17. After installing a low-temperature tank 11 in the cove 17, a breakwater 19 is installed at the sea side entrance of the cove 17. A circulation waterway 20 is formed in this breakwater 19, through which water inside and outside the inlet circulates. This circulation waterway 20 is composed of a through hole 21 provided at the upper part of the breakwater 19 and a through hole 22 provided at the lower part, and high temperature seawater from the sea outside the inlet 17 flows into the inlet 17 from the through hole 21. At the same time, the low temperature water in the cove 17 is discharged to the sea side from the through hole 22, and the water in the cove 17 is naturally circulated.

尚、第１図に示すように上記貫通孔２１．２２のいずれ
かに入江１７内の水を給排させるポンプＰを設けて入江
１７内の水を強制的に循環させても良いことは勿論であ
る。Of course, as shown in FIG. 1, a pump P for supplying and discharging water in the inlet 17 may be provided in either of the through holes 21 or 22 to forcibly circulate the water in the inlet 17. It is.

以上の方法により建造された低温タンク１１は第１図に
示す如く入江１７内に常時海水に浸漬されて据付けられ
ることになる。The cryogenic tank 11 constructed by the above method is installed in the cove 17 so as to be constantly immersed in seawater, as shown in FIG.

従って、低温タンク１１内に低温液が貯蔵され、貯蔵液
からタンク外へ逃げる低温熱は入江１７内水に伝えられ
ることになる、入江１７内底部の水が順次冷却されるこ
とになるが防波堤１つに設けられた上部の貫通孔２１か
ら高温の海水が導入され下部の貫通孔２２から低温水が
排出されることより、入江１７内の水は常時循環されて
低温タンク１１の底部を保温し低温タンク１１の底部下
の凍結を防止する。Therefore, low-temperature liquid is stored in the low-temperature tank 11, and the low-temperature heat escaping from the stored liquid to the outside of the tank is transferred to the water inside the cove 17.The water at the bottom of the cove 17 is gradually cooled. High-temperature seawater is introduced through the upper through-hole 21 and low-temperature water is discharged through the lower through-hole 22, so that the water in the cove 17 is constantly circulated to keep the bottom of the low-temperature tank 11 warm. This prevents the bottom of the low temperature tank 11 from freezing.

また、海から高波等が押し寄せた場合には防波堤１９に
より低温タンク１１は防護されて破壊される−ことがな
い。Further, when high waves or the like come from the sea, the cryogenic tank 11 is protected by the breakwater 19 and will not be destroyed.

［発明の効果］ 以上本発明によれば次のごとき優れた効果を発揮する。[Effect of the invention] As described above, according to the present invention, the following excellent effects are exhibited.

（１１ＬＮＧ、ＬＰＧ等の低温液を貯蔵する低温タンク
の底部加熱を海水等の自然熱により達成することができ
る。(11 Heating the bottom of a low-temperature tank that stores low-temperature liquids such as LNG and LPG can be achieved using natural heat such as seawater.

（Ｖ　特に低温タンクの底部にバラストタンタ空を形成
して海上曳航を可能とし、その移送と据付作業を容易に
し、タンクのｌ！股を簡単になし得る。(V) In particular, a ballast tank can be formed at the bottom of a cryogenic tank to enable sea towing, facilitate its transportation and installation work, and simplify the construction of the tank.

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

第１図は本発明の一実施例を示す低温タンクの概略側断
面図、第２図及び第３図は本発明の詳細な説明するため
の概略工程図、第４図は従来の低温タンクの例を示す側
断面図である。 図中、１１は低温タンク、１２はコンクリート製外槽、
１３は内槽、１７は入江、１９は防波堤、２０は循環水
路である。 特許出願人　　石川島播磨重工業株式会社代理人弁理士
　　絹　　谷　　信　　雄１７・・・イ氏１りｚ７ ７２−°°　　コン７リート粱外字轡 １３・・　１８　享曹 １７・・°入５ｘ− １９・・防液アＬFig. 1 is a schematic side sectional view of a low temperature tank showing an embodiment of the present invention, Figs. 2 and 3 are schematic process diagrams for explaining the present invention in detail, and Fig. 4 is a diagram of a conventional low temperature tank. It is a side sectional view showing an example. In the figure, 11 is a low temperature tank, 12 is a concrete outer tank,
13 is an inner tank, 17 is an inlet, 19 is a breakwater, and 20 is a circulation waterway. Patent Applicant Ishikawajima Harima Heavy Industries Co., Ltd. Agent Patent Attorney Nobuo Kinutani 17... Mr. Lee 1riz7 72-°° Con7 Reet 粱 Gaiji 轡 13... 18 Kyoso 17...° enter 5x- 19.・Liquidproof A L

Claims (2)

【特許請求の範囲】[Claims] （１）海等から海水が循環移動するように形成された入
江と、該入江内に底部が少なくとも入江内水に浸漬され
るべく設けられたコンクリート製の外槽と、該外槽内に
形成され実質的に低温液を収容する内槽とを備えたこと
を特徴とする低温タンク。(1) An inlet formed so that seawater circulates from the sea, etc., a concrete outer tank provided within the inlet so that the bottom is at least immersed in the water within the inlet, and an outer tank formed within the outer tank. 1. A low-temperature tank comprising: an inner tank substantially containing a low-temperature liquid; （２）コンクリート製外槽と該外槽内に設けられ実質的
に低温液を収容する内槽とを有する低温タンクを建造す
ると共に海岸等に上記タクンを収容する入江を建設した
後、該入江内に上記タンクを移送して入江内水に浸漬す
るように着座させて据付け、爾後上記入江の海側入口に
防波堤を設けると共に該防波堤に入江内外水が循環する
ための循環水路を形成するようにしたことを特徴とする
低温タンクの建設方法。(2) After constructing a cryogenic tank having a concrete outer tank and an inner tank provided inside the outer tank and substantially accommodating the cryogenic liquid, and constructing an inlet on the coast etc. to accommodate the above-mentioned takun, the inlet The above-mentioned tank was transferred to the inlet and installed so as to be immersed in the water inside the inlet, and then a breakwater was installed at the sea-side entrance of the above-mentioned inlet, and a circulation channel was formed for the circulation of water inside and outside the inlet. A method of constructing a low temperature tank characterized by:
JP24877284A 1984-11-27 1984-11-27 Low-temperature tank and construction method thereof Pending JPS61127999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24877284A JPS61127999A (en) 1984-11-27 1984-11-27 Low-temperature tank and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24877284A JPS61127999A (en) 1984-11-27 1984-11-27 Low-temperature tank and construction method thereof

Publications (1)

Publication Number Publication Date
JPS61127999A true JPS61127999A (en) 1986-06-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP24877284A Pending JPS61127999A (en) 1984-11-27 1984-11-27 Low-temperature tank and construction method thereof

Country Status (1)

Country Link
JP (1) JPS61127999A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0882113A (en) * 1994-09-06 1996-03-26 Kajima Corp Low temperature liquefied gas tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0882113A (en) * 1994-09-06 1996-03-26 Kajima Corp Low temperature liquefied gas tank

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