JPS596497A - Low temperature double-hull tank structure - Google Patents
Low temperature double-hull tank structureInfo
- Publication number
- JPS596497A JPS596497A JP11502382A JP11502382A JPS596497A JP S596497 A JPS596497 A JP S596497A JP 11502382 A JP11502382 A JP 11502382A JP 11502382 A JP11502382 A JP 11502382A JP S596497 A JPS596497 A JP S596497A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- liquid
- insulating material
- gas
- inner tank
- 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
Links
- 239000011810 insulating material Substances 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 42
- 239000012774 insulation material Substances 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
- F17C13/126—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for large storage containers for liquefied gas
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/037—Handling leaked fluid
-
- 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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/03—Treating the boil-off
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【発明の詳細な説明】
開示技術はＬＮＧ等の低温液を貯蔵する内外槽構造のタ
ンク技術の分野に属する。DETAILED DESCRIPTION OF THE INVENTION The disclosed technology belongs to the field of tank technology with an inner and outer tank structure for storing low-temperature liquids such as LNG.
而して、この発明は該ＬＮＧ等の低温液を直接貯蔵する
金属製独立内槽の外側に窒素ガス等の密封気体空間を介
して同じく金属製独立外槽が設けられ、而して該外槽に
は硬質ウレタンフオーム等の断熱材が添設されている低
温二重殻タンク構造に関する発明であり、特（こ、該断
熱材が外槽の外−側面に添設されその外側には保護ライ
ニング材で囲繞され内外槽間が完全密封空間にされてい
る低温二重殻タンク構造に係る発明である。Therefore, in this invention, an independent metal outer tank is provided outside the metal independent inner tank for directly storing the low-temperature liquid such as LNG through a sealed gas space such as nitrogen gas, and This invention relates to a low-temperature double-shell tank structure in which a heat insulating material such as hard urethane foam is attached to the tank. This invention relates to a low-temperature double-shell tank structure that is surrounded by a lining material and has a completely sealed space between the inner and outer tanks.
周知の如（、ＬＮＧ、ＬＰＧ等の低温液（化ガス）貯蔵
タンクは一般の石油貯蔵タンクと異なり、貯液の特殊性
からその構造を特別二重構造（こし、ある程度実効上技
術的には確立されている。As is well known, storage tanks for low-temperature liquids (chemical gases) such as LNG and LPG are different from general petroleum storage tanks, and due to the special nature of the liquid storage, their structure is a special double structure (to some extent, technically speaking, this is not practical). Established.
当該構造に於て、基本的に低温液貯液槽である内槽がそ
れ自体、或は、外的条件で破損し、貯液が流漏失しない
対策の一次安全性と、不測（こして流漏出した貯液の拡
散、火災等に対する二次安全性が講じられる必要がある
。In this structure, the primary safety measure is that the inner tank, which is basically a low-temperature liquid storage tank, is damaged by itself or due to external conditions, and the stored liquid does not leak out. Secondary safety measures must be taken against the spread of leaked liquid, fire, etc.
例えば、第１図に示す様に基礎１の上（こ構築したＬＮ
Ｇ貯蔵用二重殻タンク２は内外独立槽３，４間にパーラ
イト等の保冷材５を介装しており、所定距装置いて防液
堤６を設けてＬＮＧ７を貯蔵運転するようにされている
。For example, as shown in Figure 1, on the foundation 1 (LN
The double shell tank 2 for G storage has a cold insulating material 5 such as perlite interposed between the inner and outer independent tanks 3 and 4, and a liquid barrier 6 is provided with a predetermined distance device to store and operate LNG 7. There is.
当該態様Ｏこ於て、前述の如く設計上の万全は行ってい
るもの＼、不測にして内槽３の不定部分が破損、或は亀
裂が低温で発生し内外槽３，４間に流出すると貯蔵液よ
り温度の高いパーライト等に混入し急激にボイリングを
起こし、内圧を高め、或は、外槽４が同じく不測Ａこし
て破損すると大量に低温液が流出し、防液堤６内番こ貯
まる。In this case, although all precautions have been taken in the design as described above, if an unspecified part of the inner tank 3 is accidentally damaged or a crack occurs at low temperature and leaks between the inner and outer tanks 3 and 4. If it mixes with pearlite, etc., which has a higher temperature than the stored liquid, it will cause sudden boiling and increase the internal pressure, or if the outer tank 4 is also accidentally damaged by A, a large amount of low-temperature liquid will flow out, and the inner tank of the liquid barrier 6 will be damaged. Save.
核防液堤６は構造上タンク２の全貯液量を貯めることは
必らずしも出来ず、近辺（ζオーバーフローしたりする
危険がある欠点があり、大量に蒸発するガスは水幕手段
では抑止し切れず、風下側Ｇこ大量に流下し、火災発生
域を拡大する等の不具合があった。Due to its structure, the nuclear liquid dike 6 cannot necessarily store the entire amount of liquid stored in the tank 2, and there is a drawback that there is a risk of overflow in the vicinity (ζ), and the gas that evaporates in large quantities is This caused problems such as a large amount of fire flowing down the leeward side and expanding the area where the fire occurred.
又、消火が可能であっても防液堤６内の流漏出液の回収
は汚濁化されて実質上不可能である難点があった。Further, even if the fire could be extinguished, there was a problem in that it was virtually impossible to recover the leaked liquid inside the dike 6 because it became polluted.
したがって、核種在来タイツ０の二重殻タンクは流漏出
に対して内部貯液機能を有さない、即ち、二次安全性機
能が低いという間頂があった。Therefore, the double-shell tank with conventional nuclide tights 0 does not have an internal liquid storage function against leakage, that is, it has a low secondary safety function.
この発明の目的は上述従来技術に基つく低温二重殻タン
クの問題点を解決すべき技術的課題とし、内槽破損によ
る流漏出があっても外槽内でボイルオフ量を増大するこ
となしｌこ貯留出来、これｔこより、内槽からの流出液
の回収が容易でガス拡散等が行われないようにして二次
安全性・機能を充分備え得ることが出来るようにしてエ
ネルギー産業ζこ於ける低温液貯蔵利用分野に益し得る
優れた低温二重殻タンク構造を提供ぜんとするものであ
る。The purpose of this invention is to solve the technical problem of the low-temperature double-shell tank based on the above-mentioned conventional technology, and to avoid increasing the amount of boil-off in the outer tank even if there is a leakage due to damage to the inner tank. This makes it possible to easily collect the effluent from the inner tank, prevent gas diffusion, etc., and provide sufficient secondary safety and functionality, making it ideal for the energy industry. The present invention aims to provide an excellent low-temperature double-shell tank structure that can be useful in the field of low-temperature liquid storage applications.
上述目的に沿うこの発明の構成は、ＬＮＧ等の低温液は
独立金属製内槽に貯留されガス空間を介して設けられた
独立金属製外槽はその外側面に添設された断熱材により
外気と熱的にａ断され、内外槽は略同−低温に保たれ、
上記断熱材はカラー鉄板等のライニング材でカバーされ
て保護され、才た、特に、内槽をドーム屋根で覆った密
閉内槽タンクの場合ζこは、稼動中上記内外槽間密閉ガ
ス空間でリークガス検知を行い内槽亀裂発生を監視する
ようにし、不測にして内槽が大規模に破損した場合は、
貯液は該内槽から密閉空間に流漏出し、その場合、内外
槽は実質同一低温条件であるため及び、該密閉空間に保
冷材、断熱材が介在していないためボイルオフの増大は
なく、シたがって内圧も上がらず、外槽は破損するこさ
なく、そのため、流漏出液は外槽内に充分な保冷状軸で
貯留され得、他のタンクへの払い出を適宜時機（こ行う
ことが出来、内槽補修もその後充分に行うことが可能で
あり、又、断熱材外域に原則として防液堤は不要でタン
クエリヤも小さくて済み、近隣へのガス拡散、火災のお
それもないようにすることが出来るようにした技術的手
段を講じたことを要旨とするものである。In accordance with the above-mentioned object, the structure of the present invention is such that a low-temperature liquid such as LNG is stored in an independent metal inner tank, and an independent metal outer tank is provided through a gas space. The inner and outer tanks are kept at approximately the same low temperature,
The above heat insulating material is protected by being covered with a lining material such as a colored iron plate.Especially in the case of a sealed inner tank where the inner tank is covered with a dome roof, during operation the sealed gas space between the inner and outer tanks is protected. We will detect leak gas and monitor the occurrence of cracks in the inner tank, and if the inner tank is unexpectedly damaged on a large scale, we will
The stored liquid flows and leaks from the inner tank into the closed space, and in that case, there is no increase in boil-off because the inner and outer tanks are under substantially the same low temperature conditions and there is no cold insulation or heat insulation material in the closed space. Therefore, the internal pressure will not rise and the outer tank will not be damaged. Therefore, the leaked liquid can be stored in the outer tank with a sufficiently cold insulation shaft, and can be discharged to other tanks at the appropriate time. It is possible to repair the inner tank afterwards, and there is no need for a liquid dike in the area outside the insulation material, so the tank area can be small, and there is no risk of gas diffusion to the surrounding area or fire. The gist is that technical measures have been taken to make it possible.
次にこの発明の１実施例を第２図（・こ基づいて説明す
れば以下の通りである。尚、第１図と同一態様部分につ
いては同一符号を用いて説明するものとする。Next, one embodiment of the present invention will be described below with reference to FIG.
基礎１に対して構築されたこの発明の要旨を成すＬＮＧ
貯蔵用低温二重殻タンク２′はその側体が例えは、アル
ミ合金製の独立内外槽３，４から成り、それぞれ平底円
筒ドーム屋根タンクの型式をとっており、該外槽４の底
板６は基礎１に対してパーライトコンクＩＪ −ト等の
耐圧性の断熱材８を介して設置され、該外槽４１こ対し
て大気よりやＮ高い圧力の窒素ガスを封入して座屈防止
をしするようにした密封ガス空間９を介して設けた内槽
３の底板１０は上記外槽４の底板６上・ζこ載置されて
いる。LNG forming the gist of this invention built against the foundation 1
The side body of the low-temperature double-shell tank 2' for storage consists of independent inner and outer tanks 3 and 4 made of aluminum alloy, each of which is in the form of a flat-bottomed cylindrical dome-roofed tank, with the bottom plate 6 of the outer tank 4 is installed with respect to the foundation 1 through a pressure-resistant heat insulating material 8 such as perlite concrete IJ-T, and the outer tank 41 is filled with nitrogen gas at a pressure higher than atmospheric pressure to prevent buckling. A bottom plate 10 of the inner tank 3, which is provided through a sealed gas space 9, is placed on the bottom plate 6 of the outer tank 4.
而して、核外槽４の外側面には硬質ウレタンフオーム等
の断熱材１１が全面添設され、その外側面には保護材と
してのカラー鉄板１２が全面巻装されている。A heat insulating material 11 such as hard urethane foam is attached to the entire outer surface of the outer nuclear tank 4, and a colored iron plate 12 as a protective material is wrapped around the entire outer surface.
したがって、外槽４の内側には断熱材、保冷材は付設さ
れていない。Therefore, no heat insulating material or cold insulating material is provided inside the outer tank 4.
さりながら、内槽３の側壁１３の外面には所定間隔てガ
ス検知器１４．１４・・・が何役され、上記カラー鉄板
１２の外側（こ設けた測定器１５．１５・・・に接続さ
れている。Meanwhile, gas detectors 14, 14... are installed at predetermined intervals on the outer surface of the side wall 13 of the inner tank 3, and are connected to measuring instruments 15, 15... provided on the outside of the collar iron plate 12. ing.
又、フロート１６、受は払い管１７．１８等のノズル、
マンホール等は内外槽３，４を貫通して所定に装備され
ている。In addition, the float 16, the nozzle such as the receiving pipe 17 and 18,
Manholes and the like are installed at predetermined positions passing through the inner and outer tanks 3 and 4.
尚、１９は緊急排液施設でその配管の基端は上記空間９
の下部に臨ませである二
上述構成ｐこ於て、タンク２′の建造後ＬＮＧ７は内槽
３内にて受は払いされて運転され、外気の己度差は断熱
材１１により遮断され、実質的（こ内槽３内の温度と不
活性ガス空間９との温度とは等しく保され、該空間９に
は空気に代えて窒素ガスが大気よりや−高く封入されて
いる。In addition, 19 is an emergency drainage facility, and the base end of the pipe is connected to the space 9 above.
In the above-mentioned configuration P, which faces the lower part of the tank 2', after the construction of the tank 2', the LNG 7 is operated in the inner tank 3, and the temperature difference of the outside air is blocked by the heat insulating material 11. The temperature in the inner tank 3 and the temperature in the inert gas space 9 are kept substantially equal, and the space 9 is filled with nitrogen gas at a temperature slightly higher than the atmosphere instead of air.
そして、稼動中内槽３かもの液漏れはガス検知器１４．
１４・・・測定器１５．１５・・・により常時監視され
、万一リークか発見されたら貯液を他タンクに払い出し
て補修する。If the liquid leaks from the inner tank 3 during operation, the gas detector 14.
14... Measuring device 15.15... will constantly monitor the tank, and if a leak is discovered, the stored liquid will be drained to another tank and repaired.
而して、予想外の大地震等により不測にして内槽３Ｑこ
亀裂や破損が生じた場合、上記ガス検知器１４．１４・
・・、測定器１５．１５・・・は作動するが、応急処置
をする間もなく密閉不活性ガス空間９に流漏出し、内槽
３内き同レベルまで一種の貯液状態になる。Therefore, if the inner tank 3Q unexpectedly cracks or breaks due to an unexpected large earthquake, etc., the above gas detectors 14, 14,
..., the measuring instruments 15, 15, ... are activated, but before any emergency measures can be taken, the liquid leaks into the sealed inert gas space 9, and the liquid reaches the same level in the inner tank 3, forming a kind of liquid storage state.
さりながら、この場合、前述の如く外槽４内ζこ断熱材
１１により断熱保冷状態（こされ、ガス空間９は内槽３
内と同一温度条件にされているために、又、該ガス空間
９に断熱材、保冷材等は介設されていないために、該空
間９内（こ流漏出する貯ｉ７のボイルオフが増大するこ
とはほとんどない。However, in this case, as described above, the gas space 9 is kept in an insulated and cooled state by the heat insulating material 11 inside the outer tank 4, and the gas space 9 is kept inside the inner tank 3.
Because the temperature conditions are the same as those inside the gas space 9, and because there is no heat insulating material, cold insulation material, etc. Very rarely.
又、流漏出によりガス空間９の圧力は上昇するが、均圧
装置により設定圧は維持される。Furthermore, although the pressure in the gas space 9 increases due to flow leakage, the set pressure is maintained by the pressure equalization device.
このようにして内槽３がらガス空間９ｉこ低温液７が流
漏出しても、タンク内のボイルオフガスの総量は常時に
比べて格別増大することはなく、低温液７はそのまト貯
留され、直ちに、或は、所定時間後ｔこ他タンクｌこ払
い出され、或は、緊急排液施設置９により排液しても良
い。In this way, even if the low-temperature liquid 7 leaks from the inner tank 3 into the gas space 9i, the total amount of boil-off gas in the tank will not increase significantly compared to normal times, and the low-temperature liquid 7 will be stored as is. The liquid may be drained from the tank immediately or after a predetermined period of time, or the liquid may be drained by the emergency drainage facility 9.
勿論、この間、他タンクへの払い出し回収が遅れても特
に支障はなく、系外へのガス拡散もなく、その限り、火
災発生、近隣への類焼等も避けられる。Of course, during this period, there is no particular problem even if there is a delay in discharging and collecting the gas to other tanks, and there is no gas diffusion outside the system, and as long as this is the case, fire outbreaks and spreading fires to nearby areas can be avoided.
そして、流漏出貯液の回収が終了し、内槽３の流漏出部
位の補修を行えは、再ひ二重殻タンク２として使用可能
である。After the leakage storage liquid has been collected and the leakage site of the inner tank 3 is repaired, it can be used again as the double shell tank 2.
尚、この発明の実施態様は上述実施例に限るものでない
ことは勿論であり、例えは、常時のガス漏れ検知を行な
えないという不利を伴うが、内槽をオープントップタイ
ゾ（こしたりする等種々の態様が採用可能であり、対象
もＬＮＧタンクに限らず、ＬＰＧタンクも適用可能であ
る。It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments. This aspect can be adopted, and the target is not limited to LNG tanks but also LPG tanks.
前述の如く、この発明ｔこよれば、内外独立槽を有する
ＬＮＧ等の貯液の低温二重殻タンク構造に於て、基本的
に内外槽間を保冷材、断熱材等を介設させない不活性ガ
ス密封空間とし、外槽外側面に断熱材を添設するように
したことｔこより、内槽内に低温液を貯液運転した場合
、既在の確立されたタンク構造技術により内槽の一次安
全性は高いレベルで保たれる。As mentioned above, according to the present invention, in a low-temperature double-shell tank structure for storing liquid such as LNG, which has independent inner and outer tanks, it is basically possible to eliminate the need for intervening cold insulating material, heat insulating material, etc. between the inner and outer tanks. The space is sealed with active gas, and a heat insulating material is attached to the outer surface of the outer tank.Thus, when storing low-temperature liquid in the inner tank, the inner tank can be sealed using existing tank structure technology. Primary safety is maintained at a high level.
又、不活性ガス空間が介設されていることＯこより該空
間を利用して常時ガス漏れ検知をすることが出来、それ
により早期の流漏出を検出し、応急対策をとることが出
来、大事に至らないようにすることが可能である優れた
効果が奏される。Additionally, since an inert gas space is provided, this space can be used to constantly detect gas leaks, which makes it possible to detect early leaks and take emergency measures, which is very important. An excellent effect can be achieved in that it is possible to prevent this from occurring.
更に、不測にして内槽から貯液が空間内に流漏出しても
、外槽より内側が、即ち、ガス空間が、内槽と実質同温
に低温維持されているため、また、保冷材、断熱材が介
設されていないためにボイルオフの増大が起こらず、タ
ンク全体としては圧力上昇が生ぜず、内槽座屈が生ぜず
、外槽破壊が生じない慶れた効果がある。Furthermore, even if the stored liquid leaks from the inner tank into the space, the inside of the outer tank, that is, the gas space, is maintained at a low temperature that is substantially the same as the inner tank. Since no heat insulating material is provided, there is no increase in boil-off, no pressure rise in the tank as a whole, no buckling of the inner tank, and no destruction of the outer tank.
したがって、流漏出液のガス化が起らず、ガス拡散も生
ぜず、近隣に対する災害も発生しない効果がある。Therefore, there is no gasification of the leaked liquid, no gas diffusion, and no disaster to the neighborhood.
そ・のため、近隣に降下するガスに着火してタンクが爆
発して発火するおそれもない二次安全上の浸れた効果が
ある。Therefore, there is a secondary safety effect, as there is no risk of gas falling nearby igniting, causing the tank to explode and catch fire.
而して、上述の如く、内槽から流漏出した貯液は外槽内
に確実に貯液されるため、拡散しないはかりでなく、防
液堤も設ける心安がなく、したがって、タンクエリヤも
広くすることなく、散水設備等も要らず、設備費節減に
役立つ擾れた効果がある。As mentioned above, the liquid leaking from the inner tank is definitely stored in the outer tank, so there is no need to use a scale that will prevent it from spreading, and there is no need to worry about installing a liquid barrier, so the tank area is also large. There is no need for water spraying equipment, etc., which has the effect of helping to reduce equipment costs.
その上、流漏出液は外槽内に貯液されるので回収もし易
く、それも汚濁されなυ）状態で回収出来、内槽補修も
速やかに行え、再使用が早く出来る優れた効果がある。In addition, since the leaked liquid is stored in the outer tank, it is easy to collect, and it can be collected in an uncontaminated state, and the inner tank can be quickly repaired, which has the excellent effect of allowing quick reuse. .
第１図は従来技術に基つく二重殻タンク構造の断面説明
図、第２図はこの発明の１実施例の構造断面説明図であ
る。
４・・・外槽、 １１・・・断熱材、３・・・
内槽、 ９・・・空間、２′・・・二重殻タ
ンク、 １２・・保護ライニング手続補正書（自発）
昭和５７年７月２９日
特許庁長官若杉和夫 殿
１、事件の表示
昭和５７年特 許 願第１１５０２３ 号２、発明
の名称 低温二重殻タンク構造３、 補正をする者
事件との関係 特許出願人
工 ア（４称）（０９７）川崎重工業株式会社代表者
長谷用謙浩
４、代理人〒１０５
８ 補正の内容
別紙の通りFIG. 1 is an explanatory sectional view of a double shell tank structure based on the prior art, and FIG. 2 is an explanatory sectional view of the structure of one embodiment of the present invention. 4...Outer tank, 11...Insulating material, 3...
Inner tank, 9...Space, 2'...Double shell tank, 12...Protection lining procedure amendment (voluntary) July 29, 1980 Director-General of the Japan Patent Office Kazuo Wakasugi 1, Display of the case 1982 Patent Application No. 115023 (2) Title of the invention Low-temperature double-shell tank structure 3 Relationship to the case of the person making the amendment Patent applicant A (4th name) (097) Representative of Kawasaki Heavy Industries, Ltd.
Kenhiro Haseyo 4, agent 〒105 8 Contents of amendment as attached.
Claims (1)
設けられている低温二重殻タンク構造において、該内外
槽間に気体空間を設け、外槽外側に断熱材が添設されそ
の外側面Ｏこ保護ライニングが付設されていることを特
徴とする低温二重殻タンク構造。In a low-temperature double-shell tank structure in which a heat insulating material is attached to the outer tank and an inner tank is provided within the outer tank through a space, a gas space is provided between the inner and outer tanks, and a heat insulating material is added to the outside of the outer tank. A low-temperature double-shell tank structure characterized in that a protective lining is attached to the outer surface of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11502382A JPS596497A (en) | 1982-07-02 | 1982-07-02 | Low temperature double-hull tank structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11502382A JPS596497A (en) | 1982-07-02 | 1982-07-02 | Low temperature double-hull tank structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596497A true JPS596497A (en) | 1984-01-13 |
Family
ID=14652315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11502382A Pending JPS596497A (en) | 1982-07-02 | 1982-07-02 | Low temperature double-hull tank structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596497A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6197700U (en) * | 1984-12-03 | 1986-06-23 | ||
| US5992420A (en) * | 1998-06-25 | 1999-11-30 | Moriyama; Yasunobu | Cigarette-attached extinguishing device |
-
1982
- 1982-07-02 JP JP11502382A patent/JPS596497A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6197700U (en) * | 1984-12-03 | 1986-06-23 | ||
| JPH0447519Y2 (en) * | 1984-12-03 | 1992-11-10 | ||
| US5992420A (en) * | 1998-06-25 | 1999-11-30 | Moriyama; Yasunobu | Cigarette-attached extinguishing device |
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