JPH0761493A - Panel for heat insulation of extremely low temperature tank - Google Patents

Panel for heat insulation of extremely low temperature tank

Info

Publication number
JPH0761493A
JPH0761493A JP5226674A JP22667493A JPH0761493A JP H0761493 A JPH0761493 A JP H0761493A JP 5226674 A JP5226674 A JP 5226674A JP 22667493 A JP22667493 A JP 22667493A JP H0761493 A JPH0761493 A JP H0761493A
Authority
JP
Japan
Prior art keywords
low temperature
heat insulating
panel
heat insulation
layer
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
JP5226674A
Other languages
Japanese (ja)
Inventor
Hideki Morimatsu
秀樹 森松
Hiroshi Sasahira
比呂志 笹平
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.)
Dow Kakoh KK
Original Assignee
Dow Kakoh KK
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 Dow Kakoh KK filed Critical Dow Kakoh KK
Priority to JP5226674A priority Critical patent/JPH0761493A/en
Publication of JPH0761493A publication Critical patent/JPH0761493A/en
Pending legal-status Critical Current

Links

Landscapes

  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To provide a panel for heat insulation which is superior in various characteristics required for a panel for extremely low temperature heat insulation, and does not crack when it is installed under a restrained condition on a tank, and exposed to a cooling and normal temperature repeatedly by a method wherein a low temperature side heat insulating layer is constituted of a plate shape polystyrene foamed body with a plurality of slits, and the structure of a panel for heat insulation, which is composited, is specified. CONSTITUTION:As a low temperature side heat insulating layer 1 of a composed panel for heat insulation, a plate shape polystyrene foamed body is used. A plurality of slits are provided on one surface of the low temperature layer 12, and it is preferable to carve and arrange the direction of the slits in the same direction as the equator direction of a spheroidal tank. The flexibility is also imparted in the lateral direction. For a normal temperature side heat insulating layer 11, a general heat insulating material with a heat insulating effect can be used, and the normal temperature side heat insulating layer 11 is laminated on the low temperature layer 12 while leaving a joint part for four edges, and a reinforcing mesh 14 is inserted on the lamination interface. Also, a reinforcing mesh 15 is laminated to cover the slits of the low temperature layer 12. Thus, the slits are provided on the low temperature layer 12, and the temperature stress becomes smaller than the resistance force of the material, and the panel does not break even under an extremely low temperature.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、極低温タンクの保冷用
断熱壁に使用する極低温タンク断熱用パネルおよびそれ
を用いた極低温タンクの断熱構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cryogenic tank heat insulating panel used for a heat insulating wall for keeping cold of a cryogenic tank and a heat insulating structure for a cryogenic tank using the same.

【0002】[0002]

【従来の技術】LPG、LNG、液化窒素などの極低温
液貯蔵タンクに使用される極低温タンク断熱用パネルに
ついて、いくつか提案がなされている。2つの断熱層が
複合化された極低温タンク断熱用パネルについては、特
公昭60−26003号および特公昭60−54168
号に記載されている。
2. Description of the Related Art Several proposals have been made for cryogenic tank heat insulation panels used for cryogenic liquid storage tanks such as LPG, LNG, and liquid nitrogen. Regarding a cryogenic tank heat insulation panel in which two heat insulation layers are combined, Japanese Patent Publication No. 60-26003 and Japanese Patent Publication No. 60-54168 are available.
No.

【0003】特公昭60−26003号公報は曲面断熱
パネルの成形方法に関するものであるが、その公報中に
は、低温側(タンク側)が補強繊維を混在した発泡フェ
ノール樹脂であり、常温側(外気側)が発泡ポリウレタ
ンである複合化された曲面断熱用パネルが、極低温タン
ク断熱用パネルとして使えることが記載されている。ま
た、特公昭60−54168号公報は断熱壁構成用の断
熱パネル成形方法に関するものであるが、その公報中に
は、低温側が補強繊維を内蔵する状態でフェノールを発
泡させて成形した発泡フェノール樹脂であり、常温側が
発泡ポリウレタンである複合化された断熱用パネルが、
極低温タンク断熱用パネルとして使えることが記載され
ている。
Japanese Patent Publication No. 60-26003 relates to a method for molding a curved heat insulating panel, in which the low temperature side (tank side) is a foamed phenol resin mixed with reinforcing fibers and the low temperature side (tank side). It is described that a compound curved surface heat insulation panel whose outside air side) is foamed polyurethane can be used as a cryogenic tank heat insulation panel. Further, Japanese Patent Publication No. 60-54168 relates to a method for forming a heat insulating panel for forming a heat insulating wall. In that publication, a foamed phenol resin formed by foaming phenol in a state where a low temperature side contains a reinforcing fiber. And the composite heat insulation panel whose normal temperature side is polyurethane foam,
It is described that it can be used as a panel for insulating a cryogenic tank.

【0004】また、単層については、特公昭63−30
557号公報中に、独立気泡の硬質ウレタンフォーム
が、極低温タンク断熱用パネルとして用いられている。
Regarding the single layer, Japanese Patent Publication No. 63-30
In 557, closed-cell rigid urethane foam is used as a cryogenic tank insulation panel.

【0005】しかし、−42〜−196℃での極低温断
熱用パネルに要求される特性は、低熱伝導率、冷熱サイ
クル経時変化、サーマルシヨック耐久性、熱収縮係数、
施工、加工および柔軟性、耐炎性などの点でいずれも優
れた性能を兼備しなければならず、これまで、極低温タ
ンク断熱用パネルとして充分満足のゆくものがなかっ
た。
However, the characteristics required for a cryogenic heat insulating panel at −42 to −196 ° C. are low thermal conductivity, change over time in cooling and heating cycles, thermal shock durability, thermal shrinkage coefficient,
In terms of construction, processing, flexibility, flame resistance, etc., all of them must have excellent performance, and until now, there has been no sufficiently satisfactory cryogenic tank insulation panel.

【0006】さらに、これらの特性に加えて、複合化さ
れた断熱用パネルの場合、その断熱用パネルを拘束状態
でタンク上に施工し冷却すると、特に低温側の層が割れ
るという問題がある。これは短時間で割れる場合と、冷
却および常温の繰り返しで割れる場合とがあるが、一旦
複合化された断熱用パネルが割れてしまうと、割れた部
位に冷気が対流し、コールドスポットが発生することに
なる。そして、それが拡大すると熱貫流が増大し性能上
の欠陥をまねくことになる。すなわち、拘束を受けた状
態で、常温から極低温にクールダウンすると、サーマル
ストレス(熱応力)が発生し、断熱用パネルの抵抗力が
弱いと、このサーマルストレスを吸収できず、割れるこ
とで応力を吸収してしまうのである。
Further, in addition to these characteristics, in the case of a composite heat insulating panel, when the heat insulating panel is installed on a tank in a restrained state and cooled, there is a problem that a layer on the low temperature side is cracked. This may be broken in a short time, or it may be broken by repeating cooling and normal temperature, but once the composite heat insulation panel breaks, cold air convection to the cracked part and a cold spot occurs. It will be. And, when it expands, heat transmission increases, which leads to a performance defect. In other words, when cooled down from room temperature to extremely low temperature with restraint, thermal stress (thermal stress) occurs, and if the resistance of the heat insulation panel is weak, this thermal stress cannot be absorbed and the stress is broken. Will be absorbed.

【0007】[0007]

【発明が解決しようとする課題】本発明の課題は、この
ような問題点を解決することのできる極低温タンク断熱
用パネルを提供することである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a cryogenic tank heat insulation panel which can solve such problems.

【0008】[0008]

【課題を解決するための手段】本発明者らは、この課題
を達成するため検討を重ねた結果、複合化された断熱用
パネルの低温側の断熱層に特定の材料を採用し、しかも
複合化された断熱用パネルの構造を特定のものとするこ
とで、前記の問題点を解決できることを見出し、本発明
を完成するに至ったものである。
The inventors of the present invention have conducted extensive studies to achieve this object, and as a result, have adopted a specific material for the heat insulation layer on the low temperature side of the composite heat insulation panel, and The present invention has been completed by finding out that the above-mentioned problems can be solved by making a specific structure of the heat insulating panel that has been realized.

【0009】すなわち、本発明は以下の通りである。 1. 複数のスリットを有する板状ポリスチレン発泡体
からなる低温側断熱層、上記低温側断熱層よりも小さ
く、四辺目地部を残して上記低温側断熱層に積層される
常温側断熱層、並びに上記低温側断熱層と上記常温側断
熱層の積層界面に補強メッシュが介在されていることを
特徴とする極低温タンク断熱用パネル。 2. 板状ポリスチレン発泡体からなる低温側断熱層の
複数のスリットを覆って補強用メッシュが積層されてい
ることを特徴とする前項1記載の極低温タンク断熱用パ
ネル。 3. 常温側断熱層の外側に防湿層が設けられているこ
とを特徴とする前項1または前項2記載の極低温タンク
断熱用パネル。 4. 凹曲面の構造を有する前項1〜3記載の極低温タ
ンク断熱用パネル。 5. 前項1記載の極低温タンク断熱用パネルが、球形
タンクの外側表面に複数枚装着され、かつ上記断熱用パ
ネルの隣接部に目地材を設けたことを特徴とする極低温
タンクの断熱構造。
That is, the present invention is as follows. 1. A low temperature side heat insulating layer made of a plate-shaped polystyrene foam having a plurality of slits, a room temperature side heat insulating layer which is smaller than the low temperature side heat insulating layer and is laminated on the low temperature side heat insulating layer leaving four side joints, and the low temperature side A cryogenic tank heat insulation panel, characterized in that a reinforcing mesh is interposed at a laminated interface between the heat insulation layer and the room temperature side heat insulation layer. 2. The cryogenic tank heat insulation panel according to item 1, wherein a reinforcing mesh is laminated so as to cover a plurality of slits of the low temperature side heat insulation layer made of a plate-shaped polystyrene foam. 3. The cryogenic tank heat insulation panel according to the above 1 or 2, wherein a moistureproof layer is provided outside the room temperature side heat insulation layer. 4. The cryogenic tank heat insulation panel according to the above items 1 to 3, which has a concave curved surface structure. 5. A heat insulating structure for a cryogenic tank, characterized in that a plurality of the cryogenic tank heat insulating panels according to the preceding paragraph 1 are mounted on an outer surface of a spherical tank, and a joint material is provided at a portion adjacent to the heat insulating panel.

【0010】本発明の極低温タンク断熱用パネルにおい
ては、その複合化された断熱用パネルの低温側(タンク
側)断熱層(以下低温層という)に板状ポリスチレン発
泡体を用いることが重要である。この板状ポリスチレン
発泡体の発泡倍率、厚みは、貯蔵または輸送される極低
温物質、適用するタンクの種類、すなわちLNG輸送タ
ンカー、地下式貯蔵タンクおよびパイプカバーの種類、
その大きさ、保冷の状態等によって、それぞれ異なるの
で、その都度組合せを決定すればよい。
In the cryogenic tank heat insulating panel of the present invention, it is important to use a plate-like polystyrene foam for the low temperature side (tank side) heat insulating layer (hereinafter referred to as the low temperature layer) of the composite heat insulating panel. is there. The expansion ratio and thickness of this plate-like polystyrene foam are determined by the types of cryogenic substances to be stored or transported, the types of tanks to be applied, that is, LNG transport tankers, underground storage tanks and pipe covers,
Since the size and the cold storage state are different from each other, the combination may be determined each time.

【0011】しかし、その低温層は、基本的には独立気
泡構造のものである。この構造を持つ板状ポリスチレン
発泡体は、ビーズ発泡成形体または押出発泡成形体を断
続的または連続的に(一軸方向に)押圧して得られるも
のである。例えば、特公昭60−56095号公報に記
載された方法によっても得られる。このように押圧して
得られた板状ポリスチレン発泡体は、押圧方向に柔軟性
を有する。これを所定の形状に切断して1枚の低温層に
成形する。
However, the low temperature layer basically has a closed cell structure. The plate-shaped polystyrene foam having this structure is obtained by intermittently or continuously (uniaxially) pressing a bead foam molding or an extrusion foam molding. For example, it can be obtained by the method described in JP-B-60-56095. The plate-like polystyrene foam obtained by pressing in this way has flexibility in the pressing direction. This is cut into a predetermined shape to form one low temperature layer.

【0012】また、この低温層は、その片面に複数のス
リットを有していることが必要である。この複数のスリ
ットの形状は、間隔が低温層の厚み以下で、幅が0.5
〜10mm、深さは低温層の厚みの1/2以上であるの
が好ましい。スリットの方向は、本発明の極低温タンク
断熱用パネルを例えば球型タンクに適用した場合、球型
タンクの赤道方向(横方向)と同一方向にスリットが刻
まれ配置されていることが望ましい。柔軟性もこの横方
向に付与されている。
The low temperature layer is required to have a plurality of slits on one side thereof. The shape of the plurality of slits is such that the interval is less than or equal to the thickness of the low temperature layer and the width is 0.5.
It is preferable that the thickness is 10 mm and the depth is 1/2 or more of the thickness of the low temperature layer. When the cryogenic tank heat insulation panel of the present invention is applied to, for example, a spherical tank, it is desirable that the slits be arranged in the same direction as the equatorial direction (lateral direction) of the spherical tank. Flexibility is also imparted in this lateral direction.

【0013】このようなスリットを設けるのは、前記材
質に特有の点であって、2方向とも極低温下で割れる
(サーマルクラック)のを防止するためである。すなわ
ち、前記材質の低温層自体は、その方向(柔軟方向)に
ついては、素材の抵抗力が熱応力(δ=E・dΔT)よ
りも大きく、また、素材の伸度(%)も熱歪量(ε=d
ΔT)よりも大きいので、極低温下拘束形態で使用して
も、熱応力に耐える抵抗力を有しているが、他の方向
(剛方向)は、上記の条件を満たすことができないの
で、この方向に割れる確率が高い。したがって、この点
を改善するため、その手段としてその方向にスリットを
入れることで、拘束形態から準拘束形態をつくりだし、
熱応力を緩和させ素材の抵抗力よりも小さくすることで
2方向とも極低温下で割れるのを防止することができ
る。
The provision of such slits is peculiar to the above-mentioned material, and is for preventing cracks (thermal cracks) at extremely low temperatures in both directions. That is, in the low temperature layer itself of the material, the resistance of the material is greater than the thermal stress (δ = E · dΔT) in its direction (flexible direction), and the elongation (%) of the material is also the amount of thermal strain. (Ε = d
Since it is larger than ΔT), it has resistance to withstand thermal stress even when used in a restrained form at cryogenic temperature, but since the other direction (rigid direction) cannot satisfy the above condition, The probability of breaking in this direction is high. Therefore, in order to improve this point, a quasi-constraint form is created from the restraint form by inserting a slit in that direction as the means,
By relaxing the thermal stress and making it smaller than the resistance of the material, it is possible to prevent cracking in both directions at extremely low temperatures.

【0014】常温側(外気側)断熱層(以下常温層とい
う)は、低温層のようなシビアな条件にさらされること
がないので、断熱効果のある断熱材が一般に使用でき
る。断熱材としては、ポリウレタン、ポリスチレン、ポ
リエチレン発泡体などが使用できる。ポリウレタン発泡
体は、低温層表面に型枠を形成して、そこにポリウレタ
ンを注入し、発泡して常温層を成型することもできる。
また、ポリスチレン発泡体は、硬質の押出発泡ポリスチ
レン、例えば「スタイロフォーム」(商品名、ダウ化工
(株))あるいは低温層と同一材質のもの、例えば「ス
タイロフレックス」(商品名、ダウ化工(株))を使用
することができる。また、この常温層は2層以上の多層
とすることもできるし、また補強の目的で、常温層をガ
ラス繊維メッシュ、金属板、プラスチック板などで補強
することもできる。
Since the room temperature side (outside air side) heat insulating layer (hereinafter referred to as the room temperature layer) is not exposed to severe conditions unlike the low temperature layer, a heat insulating material having a heat insulating effect can be generally used. As the heat insulating material, polyurethane, polystyrene, polyethylene foam or the like can be used. The polyurethane foam may be formed by forming a mold on the surface of the low temperature layer, injecting polyurethane into the mold, and foaming to mold the room temperature layer.
The polystyrene foam is a rigid extruded polystyrene foam such as "Styrofoam" (trade name, Dow Chemical Co., Ltd.) or the same material as the low temperature layer, for example "Styroflex" (trade name, Dow Chemical Co., Ltd.). ) Can be used. Further, the room temperature layer may be a multilayer of two or more layers, and the room temperature layer may be reinforced with a glass fiber mesh, a metal plate, a plastic plate or the like for the purpose of reinforcement.

【0015】常温層の形状としては、図1、図2に示す
ように、その大きさは低温層よりも小さくなければなら
ない。これは、低温層を常温層に積層した際、低温層の
四辺に目地部を残した状態とするためである。この目地
部の形状の一例を図2、図4に示しているが、これによ
ると目地部の幅(A)は20〜100mmであるのが好
ましい。したがって、常温層の大きさは、低温層よりも
小さく、低温層の四辺よりそれぞれ40〜200mm程
度小さなものであるのが好ましい。
The shape of the room temperature layer must be smaller than that of the low temperature layer, as shown in FIGS. This is because when the low temperature layer is laminated on the normal temperature layer, the joints are left on the four sides of the low temperature layer. An example of the shape of the joint is shown in FIGS. 2 and 4, and according to this, the width (A) of the joint is preferably 20 to 100 mm. Therefore, the size of the room temperature layer is preferably smaller than that of the low temperature layer and about 40 to 200 mm smaller than each of the four sides of the low temperature layer.

【0016】また、低温層と高温層との界面に、補強メ
ッシュを積層する。この界面に積層された補強メッシュ
は、低温層に設けたスリット部から割れが発生した場
合、割れが低温層から常温層へと伝播することを防止す
るためである。この場合補強メッシュとして、ガラスな
どの無機繊維、金属繊維、アラミドなどの有機繊維を原
料とする不織布、織物、編物その他のシート状物を用い
ることができる。この補強メッシュは、接着剤で接合さ
れるかまたは熱融着により接合される。この補強メッシ
ュは、隣接するパネルとの接合状態において互いに重な
りあって補強しあうため、低温層の端面より20〜10
0mm突出して設けることが望ましい。
A reinforcing mesh is laminated at the interface between the low temperature layer and the high temperature layer. This is because the reinforcing mesh laminated on the interface prevents the cracks from propagating from the low temperature layer to the room temperature layer when the cracks are generated from the slit portion provided in the low temperature layer. In this case, as the reinforcing mesh, a non-woven fabric, a woven fabric, a knitted fabric or other sheet-like material made of inorganic fibers such as glass, metal fibers, organic fibers such as aramid can be used. The reinforcing mesh is bonded with an adhesive or by heat fusion. Since the reinforcing meshes overlap each other in the joined state with the adjacent panels to reinforce each other, the reinforcing mesh is 20 to 10 from the end surface of the low temperature layer.
It is desirable to provide it so as to project by 0 mm.

【0017】本発明の極低温タンク断熱用パネルは、そ
の一部を構成する低温層のスリット側表面にスリットを
覆うような形で補強用メッシュを積層することができ
る。この補強用メッシュは、低温層の割れを防止するた
めに用いられる。この補強用メッシュは、低温状態にお
いても収縮量がきわめて小さく、低温層の収縮を抑制
し、かつ局部的なクラック発生の増長を防止する効果を
持つ。この目的のために、補強用メッシュとして前述の
補強メッシュと同様の材料を使用することができ、また
同様に、接着剤で接合されるかまたは熱融着により接合
される。
In the cryogenic tank heat insulation panel of the present invention, a reinforcing mesh can be laminated on the slit side surface of the low temperature layer forming a part thereof so as to cover the slit. This reinforcing mesh is used to prevent cracking of the low temperature layer. This reinforcing mesh has an extremely small amount of shrinkage even in a low temperature state, has the effect of suppressing the shrinkage of the low temperature layer and preventing the local occurrence of cracks from increasing. For this purpose, reinforcing meshes can be made of the same materials as the reinforcing meshes mentioned above, and are likewise glued or heat-sealed.

【0018】本発明の極低温タンク断熱用パネルの外気
側に、防湿層を設けることができる。この防湿層は、外
側からの水蒸気が該パネル内に侵入し、露結による水分
から本発明のパネルを防護するためである。防湿層とし
て、厚さ50〜1200μの鉄薄板、アルミ板、ステン
レス板などの金属板、FRPなどの繊維強化プラスチッ
ク、などが用いられる。
A moisture-proof layer can be provided on the outside air side of the cryogenic tank heat insulation panel of the present invention. This moisture-proof layer is for protecting the panel of the present invention from moisture due to the invasion of water vapor from the outside into the panel. As the moisture-proof layer, an iron thin plate having a thickness of 50 to 1200 μm, a metal plate such as an aluminum plate or a stainless plate, or a fiber reinforced plastic such as FRP is used.

【0019】本発明の極低温タンク断熱用パネルの一実
施例を、その製法に基づいて、図1および図2を参照し
て説明する。工程順に示すと、以下のとりである。
An embodiment of a cryogenic tank heat insulating panel of the present invention will be described based on its manufacturing method with reference to FIGS. 1 and 2. The order of the steps is as follows.

【0020】(1)厚さ100mmの板状ポリスチレン
発泡体、「スタイロフレックス」(商品名、ダウ化工
(株))および厚さ100mmのポリウレタン発泡体を
用意した。 (2)板状ポリスチレン発泡体の一面をスリット加工し
た。スリットの間隔は80mm、幅5mm、深さは70
mmであった。 (3)板状ポリスチレン発泡体およびポリウレタン発泡
体を所定の寸法にカットし、低温層(12)および常温
層(11)とした。 (4)低温層(12)および常温層(11)にウレタン
系の接着剤を塗布した。この際、ガラスクロス(1
4)、(15)を入れた。 (5)前記接着剤の硬化前に防湿層(13)および常温
層(11)に接着剤を塗布した。 (6)前記によって得た複合体をタンバックルに入れ、
接着剤を硬化させつつ、曲面を有する治具で圧締しなが
ら曲面成形し、接着剤で複合化し、凹曲面の構造を有す
る本発明の極低温タンク断熱用パネルを得た。
(1) A plate-shaped polystyrene foam having a thickness of 100 mm, "Styroflex" (trade name, Dow Kako Co., Ltd.) and a polyurethane foam having a thickness of 100 mm were prepared. (2) One side of the plate-shaped polystyrene foam was slit. The slit spacing is 80 mm, the width is 5 mm, and the depth is 70.
It was mm. (3) The plate-shaped polystyrene foam and the polyurethane foam were cut into predetermined dimensions to obtain a low temperature layer (12) and a room temperature layer (11). (4) A urethane adhesive was applied to the low temperature layer (12) and the room temperature layer (11). At this time, glass cloth (1
4) and (15) were added. (5) The adhesive was applied to the moisture-proof layer (13) and the room temperature layer (11) before the adhesive was cured. (6) Put the composite obtained above in a tan buckle,
While curing the adhesive, the curved surface was formed by pressing with a jig having a curved surface, and compounded with the adhesive to obtain a cryogenic tank heat insulation panel of the present invention having a concave curved surface structure.

【0021】このようにして得た複合化された本発明の
極低温タンク断熱用パネルを、タンク全面に装着した状
態を図3に示す。図3は、極低温タンクの外装の一部を
切欠いて、極低温タンクの断熱構造をわかりやすく示し
たものである。極低温タンク断熱用パネルをタンクの外
側表面に装着するには、例えば、スタッドボルトの先端
部分をタンク表面に溶接し、そのスタッドボルトを用い
て上記パネルをタンク表面に圧締する(図示せず)こと
により実施する、などの手段が採用できる。
FIG. 3 shows a state in which the composite cryogenic tank heat insulation panel of the present invention thus obtained is mounted on the entire surface of the tank. FIG. 3 shows the heat insulating structure of the cryogenic tank in an easy-to-understand manner by cutting out a part of the exterior of the cryogenic tank. To attach the cryogenic tank insulation panel to the outer surface of the tank, for example, the tip portion of the stud bolt is welded to the tank surface and the stud bolt is used to press the panel to the tank surface (not shown). It is possible to adopt the means such as

【0022】図4は、複合化された極低温タンク断熱用
パネルが、隣り合った他の断熱用パネルと目地材(1
8)、(19)を介して結合される直前の状態を示して
いる。図4において、目地材(18)および(19)
は、それぞれ硬質ウレタンフォームおよびガラス繊維状
断熱材である。目地材(18)は、防湿層がその耳を出
して貼り合わされており、これを接着剤を用いて目地部
に挿入し、固定する。また、図4において、Aの長さは
20〜100mmであり、Bの長さは0〜20mmであ
る。
FIG. 4 shows that the combined cryogenic tank heat insulation panel and another adjacent heat insulation panel and joint material (1
8) shows the state immediately before being coupled via (19). In FIG. 4, joint materials (18) and (19)
Are rigid urethane foam and glass fiber insulation, respectively. The joint material (18) has a moisture-proof layer attached so that its ears are exposed, and this is inserted into the joint portion with an adhesive and fixed. Further, in FIG. 4, the length of A is 20 to 100 mm, and the length of B is 0 to 20 mm.

【0023】目地材は、常温層と同様の材料、またはガ
ラス繊維状断熱材、軟質ウレタンフオーム、シリコンゴ
ムシーラントなど、適度の断熱性と柔軟性を具備した材
料を用いる。
As the joint material, a material similar to that of the room temperature layer or a material having appropriate heat insulation and flexibility such as a glass fiber heat insulating material, a soft urethane foam, and a silicone rubber sealant is used.

【0024】[0024]

【発明の効果】極低温断熱用パネルに要求される、低熱
伝導率、冷熱サイクル経時変化、サーマルシヨック耐久
性、熱収縮係数、施工、加工および柔軟性などの諸特性
の点でいずれも優れた性能を兼備し、さらに、その断熱
用パネルを拘束状態でタンク上に施工し、冷却および常
温を繰り返しても割れることがない。また、低温側断熱
層にスリットを入れることで、拘束形態から準拘束形態
をつくりだし、熱応力を素材の抵抗力以下に軽減してや
ることで2方向とも極低温下で割れるのを防止すること
ができる。
[Effects of the Invention] All of them are excellent in various properties such as low thermal conductivity, aging characteristics of thermal cycle, thermal shock durability, heat shrinkage coefficient, construction, processing and flexibility required for a cryogenic heat insulating panel. It has high performance, and its insulation panel is installed on the tank in a restrained state, and it does not crack even if it is cooled and kept at normal temperature. In addition, by forming a slit in the low temperature side heat insulating layer, a semi-constraint form is created from the restraint form, and by reducing the thermal stress to less than the resistance of the material, it is possible to prevent cracking in both directions at extremely low temperatures. .

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

【図1】本発明の極低温タンク断熱用パネルの見取図で
ある。
FIG. 1 is a sketch of a cryogenic tank insulation panel of the present invention.

【図2】本発明の極低温タンク断熱用パネルの側面図で
ある。
FIG. 2 is a side view of a cryogenic tank insulation panel of the present invention.

【図3】極低温タンクの外側表面に装着された本発明の
極低温タンク断熱用パネル群による断熱構造を示す、極
低温タンクの見取図である。
FIG. 3 is a schematic view of a cryogenic tank showing a heat insulating structure by a panel group for cryogenic tank insulating of the present invention mounted on the outer surface of the cryogenic tank.

【図4】本発明の極低温タンク断熱用パネルがタンクの
表面に装着され、パネル同志が目地材を介して結合され
る直前の状態を示す断面図である。
FIG. 4 is a cross-sectional view showing a state in which the cryogenic tank heat insulation panel of the present invention is mounted on the surface of the tank, and the panels are immediately connected to each other through the joint material.

【符号の説明】[Explanation of symbols]

11 常温側断熱層 12 低温側断熱層 13 防湿層 14 補強メッシュ 15 補強用メッシュ 16 スリット 17 極低温タンク 18 目地材 19 目地材 11 Room Temperature Side Insulation Layer 12 Low Temperature Side Insulation Layer 13 Moisture Proof Layer 14 Reinforcing Mesh 15 Reinforcing Mesh 16 Slit 17 Cryogenic Tank 18 Joint Material 19 Joint Material

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 複数のスリットを有する板状ポリスチレ
ン発泡体からなる低温側断熱層、上記低温側断熱層より
も小さく、四辺目地部を残して上記低温側断熱層に積層
される常温側断熱層、並びに上記低温側断熱層と上記常
温側断熱層との積層界面に補強メッシュが介在されてい
ることを特徴とする極低温タンク断熱用パネル。
1. A low temperature side heat insulating layer made of a plate-shaped polystyrene foam having a plurality of slits, a room temperature side heat insulating layer smaller than the low temperature side heat insulating layer and laminated on the low temperature side heat insulating layer leaving four-sided joints. And a reinforcing mesh interposed at a laminated interface between the low temperature side heat insulating layer and the room temperature side heat insulating layer.
【請求項2】 板状ポリスチレン発泡体からなる低温側
断熱層の複数のスリットを覆って補強用メッシュが積層
されていることを特徴とする請求項1記載の極低温タン
ク断熱用パネル。
2. The cryogenic tank heat insulation panel according to claim 1, wherein a reinforcing mesh is laminated so as to cover a plurality of slits of the low temperature side heat insulation layer made of a plate-shaped polystyrene foam.
【請求項3】 常温側断熱層の外側に防湿層が設けられ
ていることを特徴とする請求項1または請求項2記載の
極低温タンク断熱用パネル。
3. The cryogenic tank heat insulation panel according to claim 1, wherein a moisture-proof layer is provided outside the room temperature side heat insulation layer.
【請求項4】 低温側に凹曲面の構造を有する請求項1
〜3記載の極低温タンク断熱用パネル。
4. A structure having a concave curved surface on the low temperature side.
The panel for heat insulation of a cryogenic tank according to 3 above.
【請求項5】 請求項1記載の極低温タンク断熱用パネ
ルが、球形タンクの外側表面に複数枚装着され、かつ上
記断熱用パネルの隣接部に目地材を設けたことを特徴と
する極低温タンクの断熱構造。
5. A cryogenic tank according to claim 1, wherein a plurality of the cryogenic tank heat insulating panels are mounted on an outer surface of a spherical tank, and a joint material is provided in a portion adjacent to the heat insulating panel. Heat insulation structure of the tank.
JP5226674A 1993-08-20 1993-08-20 Panel for heat insulation of extremely low temperature tank Pending JPH0761493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5226674A JPH0761493A (en) 1993-08-20 1993-08-20 Panel for heat insulation of extremely low temperature tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5226674A JPH0761493A (en) 1993-08-20 1993-08-20 Panel for heat insulation of extremely low temperature tank

Publications (1)

Publication Number Publication Date
JPH0761493A true JPH0761493A (en) 1995-03-07

Family

ID=16848883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5226674A Pending JPH0761493A (en) 1993-08-20 1993-08-20 Panel for heat insulation of extremely low temperature tank

Country Status (1)

Country Link
JP (1) JPH0761493A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH082589A (en) * 1994-06-20 1996-01-09 Mitsubishi Heavy Ind Ltd Heat insulation and shield structure for low temperature cargo tank
JP2006300320A (en) * 2005-04-15 2006-11-02 Korea Gas Corp Module for manufacturing storage tank for liquefied natural gas and tank utilizing the same
JP2008542651A (en) * 2005-05-30 2008-11-27 ティーアイ マリン コントラクティング エイエス Method and system for thermal insulation of cryogenic containers and tanks
KR101034472B1 (en) * 2010-08-19 2011-05-17 주식회사 화인텍 Insulation structure for independence type liquified gas tank and method for forming the insulation structure
JP2011196412A (en) * 2010-03-17 2011-10-06 Kawasaki Heavy Ind Ltd Heat shielding structure of low temperature tank and heat shielding construction method
JP2013011326A (en) * 2011-06-30 2013-01-17 Dow Kakoh Kk Heat insulation structure of liquefied gas tank
KR101337645B1 (en) * 2011-12-09 2013-12-05 삼성중공업 주식회사 Liquefied natural gas storage tank
CN103542232A (en) * 2013-10-24 2014-01-29 镇江中化聚氨酯工业设备有限公司 Lateral insulation structure of laminating conveyor
JP2015190484A (en) * 2014-03-27 2015-11-02 株式会社フォームテック Heat insulation panel for covering spherical curved surface of liquefied gas tank
US9364879B2 (en) 2007-07-19 2016-06-14 Nippon Steel & Sumitomo Metal Corporation Cooling control method, cooling control apparatus, and cooling water amount calculation apparatus
JP2017160951A (en) * 2016-03-08 2017-09-14 川崎重工業株式会社 Thermal insulation structure of liquefied gas tank and liquefied gas tank using the same
JP2018059574A (en) * 2016-10-05 2018-04-12 旭化成建材株式会社 Composite heat insulation material
CN108980601A (en) * 2018-08-21 2018-12-11 悌埃保温制品(上海)有限公司 A kind of cold insulation insulation board and heat-insulation system for low-temperature storage tank
CN110043792A (en) * 2019-05-21 2019-07-23 悌埃保温制品(上海)有限公司 A kind of cold insulation insulation board and its installation method for low-temperature storage tank
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH082589A (en) * 1994-06-20 1996-01-09 Mitsubishi Heavy Ind Ltd Heat insulation and shield structure for low temperature cargo tank
JP2006300320A (en) * 2005-04-15 2006-11-02 Korea Gas Corp Module for manufacturing storage tank for liquefied natural gas and tank utilizing the same
JP2008542651A (en) * 2005-05-30 2008-11-27 ティーアイ マリン コントラクティング エイエス Method and system for thermal insulation of cryogenic containers and tanks
US9364879B2 (en) 2007-07-19 2016-06-14 Nippon Steel & Sumitomo Metal Corporation Cooling control method, cooling control apparatus, and cooling water amount calculation apparatus
JP2011196412A (en) * 2010-03-17 2011-10-06 Kawasaki Heavy Ind Ltd Heat shielding structure of low temperature tank and heat shielding construction method
KR101034472B1 (en) * 2010-08-19 2011-05-17 주식회사 화인텍 Insulation structure for independence type liquified gas tank and method for forming the insulation structure
JP2013011326A (en) * 2011-06-30 2013-01-17 Dow Kakoh Kk Heat insulation structure of liquefied gas tank
KR101337645B1 (en) * 2011-12-09 2013-12-05 삼성중공업 주식회사 Liquefied natural gas storage tank
CN103542232A (en) * 2013-10-24 2014-01-29 镇江中化聚氨酯工业设备有限公司 Lateral insulation structure of laminating conveyor
JP2015190484A (en) * 2014-03-27 2015-11-02 株式会社フォームテック Heat insulation panel for covering spherical curved surface of liquefied gas tank
JP2017160951A (en) * 2016-03-08 2017-09-14 川崎重工業株式会社 Thermal insulation structure of liquefied gas tank and liquefied gas tank using the same
WO2017154698A1 (en) * 2016-03-08 2017-09-14 川崎重工業株式会社 Heat-resistant structure for liquefied gas tank, and liquefied gas tank using same
JP2018059574A (en) * 2016-10-05 2018-04-12 旭化成建材株式会社 Composite heat insulation material
CN108980601A (en) * 2018-08-21 2018-12-11 悌埃保温制品(上海)有限公司 A kind of cold insulation insulation board and heat-insulation system for low-temperature storage tank
CN113302429A (en) * 2019-01-18 2021-08-24 日清纺化学株式会社 Heat insulation structure of tank for low-temperature fluid and construction method thereof
CN110043792A (en) * 2019-05-21 2019-07-23 悌埃保温制品(上海)有限公司 A kind of cold insulation insulation board and its installation method for low-temperature storage tank
CN112178447A (en) * 2019-07-03 2021-01-05 东成泛泰克株式会社 Heat insulation structure of ultra-low temperature storage tank
JP2021011950A (en) * 2019-07-03 2021-02-04 ドンスン ファインテック カンパニー リミテッドDongsung Finetec Co.,Ltd Heat-insulating structure of cryogenic storage tank
KR102255784B1 (en) * 2020-12-14 2021-05-24 전재환 LNG fuel tank with improved cooling function

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