JPH079279B2 - Insulation structure and a method thereof construction of the tank bottom portions - Google Patents

Insulation structure and a method thereof construction of the tank bottom portions

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Publication number
JPH079279B2
JPH079279B2 JP17677287A JP17677287A JPH079279B2 JP H079279 B2 JPH079279 B2 JP H079279B2 JP 17677287 A JP17677287 A JP 17677287A JP 17677287 A JP17677287 A JP 17677287A JP H079279 B2 JPH079279 B2 JP H079279B2
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Japan
Prior art keywords
support
structure
insulation
tank
tank bottom
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 - Lifetime
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JP17677287A
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Japanese (ja)
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JPS6421300A (en
Inventor
孝悦 浅井
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三菱重工業株式会社
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Priority to JP17677287A priority Critical patent/JPH079279B2/en
Publication of JPS6421300A publication Critical patent/JPS6421300A/en
Publication of JPH079279B2 publication Critical patent/JPH079279B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/001Thermal insulation specially adapted for cryogenic vessels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/03Thermal insulations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はタンク底面部の防熱構造及びその施工方法に関する。 DETAILED DESCRIPTION OF THE INVENTION The present invention [relates] relates insulation structure and method of constructing the tank bottom part.

〔従来の技術〕 [Prior art]

例えば、液化ガス運搬船の船倉内底板上に取付けられる竪円筒型独立タンク式液化ガスタンクのタンク底面部の防熱構造としては、第4図部分横断面図に示すように、 For example, the heat insulating structure of the tank bottom portions of the vertical cylindrical independent tank type liquefied gas tank mounted on hold the bottom plate of the liquefied gas carrier, as shown in Figure 4 partially cross-sectional view,
まず内底板013上に長手方向適宜間隔で並列させた複数の横手方向支持ガーダー014と、それの上に横手方向適宜間隔で並列させた複数の長手方向支持ビーム015と、 A plurality of transverse supporting girders 014 on the inner bottom plate 013 were parallel in the longitudinal direction appropriate intervals First, a plurality of longitudinal support beams 015 which are arranged in parallel in the transverse direction appropriate intervals on it,
それの上端部材に沿つて載置された各断熱性支持材016 Each thermal insulation support are along connexion placed on its top member 016
とにより支持構造017を形成し、次いで、この支持構造0 The support structure 017 is formed by a, then, the support structure 0
17の上にタンク底板018を搭載し、更にこのタンク底板0 Equipped with a tank bottom plate 018 on top of 17, further the tank bottom plate 0
18の下面にポリウレタンフオーム防熱材019を現場発泡により直接固着させるとともに、それと断熱性支持材01 The lower surface 18 together to fix directly by in situ foaming the polyurethane foam insulation material 019, the same heat-insulating support member 01
6との間に適宜厚さのグラスウール防熱材020を挿入したのち、ポリウレタンフオーム防熱材019及びグラスウール防熱材020の下面を保護シート021で覆うものが知られている。 After inserting the glass wool insulation material 020 of appropriate thickness between 6, which covers the lower surface of the polyurethane foam insulation material 019 and glass wool insulation material 020 with a protective sheet 021 is known.

しかしながら、このような構造では、下記のような欠点がある。 However, in this structure, there is a drawback as follows.

(1) タンク底面部の防熱工事はタンク底板018を断熱性支持材016の上に据付けてから行うので、その工事はタンク底板018と内底板013に挾まれた狭い空間で行わなければならず、作業性が極めて悪い。 (1) Since the insulation construction of the tank bottom portion performed after installation of the tank bottom plate 018 on the heat-insulating support member 016, the construction must be performed in a narrow space sandwiched inner bottom 013 and the tank bottom plate 018 , is extremely poor workability.

(2) タンクは建造時及び入渠時の常温から液化ガス運搬時の低温までの温度変化により熱変形があり、タンク底板018に固着したポリウレタンフオーム防熱材019と断熱性支持材016とは相対的に移動し、その移動量をグラスウール防熱材020で吸収させているが、タンクが大型化する場合、タンクの温度変化が大きい場合,タンク材料が熱変形の大きい材料の場合等、その移動量は大きくなり、例えば、小型LPG船の移動量に比べて大型LNG船のそれは10倍を越えるので、この移動量の吸収は困難になる。 (2) the tank has a heat distortion by the temperature change from normal temperature at the time of construction and during docking to a low temperature at the time of liquefied gas transport, relative to the polyurethane foam insulation member 019 and the heat-insulating support member 016 fixed to the tank bottom plate 018 Go to, although the amount of movement is absorbed by the glass wool insulation material 020, if the tank is enlarged, when the temperature change of the tank is large, or when the tank material of the material having a large thermal deformation, the amount of movement is increases, for example, since more than 10 times that of the large LNG vessels as compared to the amount of movement of small LPG carriers, absorption of this amount of movement becomes difficult.

〔発明が解決しようとする問題点〕 [Problems to be Solved by the Invention]

本発明は、このような事情に鑑みて提案されたもので、 The present invention has been proposed in view of these circumstances,
防熱施工時に上方クリヤランスの制約がなく、液体貯蔵時に防熱材がタンクの熱変形の影響を受けず、施工能率及び安全性の高いタンク底面部の防熱構造及びその施工方法を提供することを目的とする。 Insulation no restriction of upper Clearance during construction, and intended to heat shield during liquid storage is not affected by the thermal deformation of the tank, to provide insulation structure and construction method of high tank bottom portion of installation efficiency and safety to.

〔問題点を解決するための手段〕 [Means for Solving the Problems]

そのために本発明構造は、基礎上に長手方向適宜間隔で並列された複数の支持ガーダーと、上記支持ガーダーの上に横手方向適宜間隔で並列された複数の支持ビームと、上記各支持ビームの上端に沿つてそれぞれ載置された断熱性支持材とより形成される支持構造上に搭載されるタンク底面部の防熱構造において、上記各断熱性支持材間に底面が上記支持構造に支持され両側面及び頂面が比較的薄い弾性を有する防熱材で覆われた防熱材ブロツクを密充填したことを特徴とする。 The present invention structure To this end, a plurality of support girders in parallel in the longitudinal direction appropriate intervals on a foundation, a plurality of supporting beams in parallel in transverse direction appropriate intervals on said support girder, the upper end of each support beam along connexion in insulation structure for the tank bottom portion to be mounted on each placed on thermal insulation support more formed support structure, both sides are supported bottom to the support structure between the respective heat-insulating support material and wherein the top surface is densely packed with heat shield block covered with insulation material having a relatively thin resilient.

また本発明方法は、基礎上に長手方向適宜間隔で並列された複数の支持ガーダーと、上記支持ガーダーの上に横手方向適宜間隔で並列された複数の支持ビームと、上記各支持ビームの上端に沿つてそれぞれ載置された断熱性支持材とより形成される支持構造上にタンクを支持する防熱構造を施工するに際し、上記各断熱性支持材間に防熱材ブロツクを密充填する第1工程と、上記支持構造上に上記タンクの底面部を載置する第2工程とよりなることを特徴とする。 The method of the present invention, a plurality of support girders in parallel in the longitudinal direction appropriate intervals on a foundation, a plurality of supporting beams in parallel in transverse direction appropriate intervals on said support girder, the upper end of each support beam upon for applying a heat insulating structure for supporting the tank along connexion respectively placed on thermal insulation support more formed support structure, a first step of packing the heat shield block between the respective heat-insulating support member characterized by comprising further a second step of placing the bottom of the tank on the support structure.

〔作用〕 [Action]

上述の構成により、上方に制約のない広いスペースで支持構造に防熱構造を装着することができるとともに、タンク底板は防熱構造が装着された支持構造上に載置されているだけなので、その熱変形の影響を防熱構造に与えることがない。 The construction described above, it is possible to mount the insulation structure to the support structure in a wide space unconstrained upward, since only the tank bottom plate is placed on the support structure insulation structure is mounted, the thermal deformation there is no or give effect to the insulation structure.

〔実施例〕 〔Example〕

本発明を液化ガス運搬船に適用した一実施例を図面について説明すると、第1図はその横断面図、第2図は第1 When explaining an example of applying the present invention to a liquefied gas carrier drawings, Figure 1 is the transverse cross-sectional view, FIG. 2 first
図II部の部分拡大図、第3図は第1図のタンク底部の防熱構造への下部タンクブロツクの取付け要領を示す同じく横断面図である。 Figure II section partially enlarged view of FIG. 3 is a likewise cross-sectional view showing the mounting manner of the lower Tankuburotsuku to insulation structure of the tank bottom of Figure 1.

上図において、第4図と同一の記号はそれぞれ同図と同一の部材を示し、まず、第1〜2図において、1は支持構造017上に載置され、アンカーリング2により内底板0 In the figure, FIG. 4 of the same symbols respectively denote the same members as figure, first, in the 1-2 figure, 1 is placed on the support structure 017, the inner bottom plate 0 by anchoring 2
13に支持された竪円筒型独立タンク式液化ガスタンクで、その頂面及び周面は防熱材3により被覆されている。 In vertical cylindrical independent tank type liquefied gas tank which is supported by 13, the top surface and the circumferential surface is covered with a heat shield 3.

4は並列された各支持ビーム015の間にそれぞれ長手方向適宜間隔で並列的に架設された横木5の上に横手方向適宜間隔で並列された2本の支え木、6は支え木4により支持され隣り合う断熱性支持材016,016の側面間に配置された比較的巾広で深さが断熱性支持材016の深さ相当の防熱材ブロツク、7は断熱性支持材016の左右側面と防熱材ブロツク6との間にそれぞれ圧装された比較的巾狭の弾性のあるグラスウール防熱材、8は防熱材ブロツク6の上面とタンク底板018下面との間に圧装されるとともに、防熱材ブロツク6に接着止めされた比較的深さの浅い弾性のあるグラスウール防熱材である。 4 two support trees are parallel transversely appropriate intervals on the crossbar 5 in parallel to erection in the longitudinal direction appropriate intervals respectively between each support beam 015 which is parallel, 6 supported by trees 4 supported are adjacent heat-insulating support material relatively deep in wide width of which is disposed between the side surface of 016,016 is equivalent depth of thermal insulation support member 016 heat shield block, 7 the left and right sides and heat shield of heat-insulating support member 016 relatively width of narrow elastic glass wool insulation material is 圧装 respectively between the block 6, with 8 is 圧装 between the upper surface and the tank bottom plate 018 lower surface of the heat shield block 6, heat shield block 6 glass wool insulation material with a relatively deep shallow elastic bonded stopped.

次に、第3図において、9はタンク底板018を含むタンク下部ブロツク、10は図示せざるクレーンより吊り枠11 Next, in FIG. 3, 9 tank bottom block including a tank bottom plate 018, 10 hanging from the crane unshown frame 11
等を介して下部ブロツク9を吊るワイヤである。 A wire hanging the lower block 9 via the like.

このような構造において、グラスウール防熱材8はタンク底板018に固着されておらず、それ等は互いに相対移動することが可能なので、タンクに液体貯蔵時等に防熱材ブロツク6,グラスウール防熱材7及び8はタンク底板 In this structure, glass wool insulation material 8 is not fixed to the tank bottom plate 018, so that can it such that relative movement to each other, heat shield block 6 during liquid storage like a tank, glass wool insulation material 7 and 8 tank bottom plate
018の熱変形の影響を受けることがない。 It is not affected by the thermal deformation of 018.

次に、本発明による上述したタンク底面部の防熱構造の施工方法を示す。 Next, a method of constructing insulation structure of the tank bottom portion as described above according to the present invention.

まず、第1工程として第2図に示すように、内底板013 First, as shown in FIG. 2 as a first step, the inner bottom plate 013
上に形成された支持構造017について、対向する支持ビーム015の下端部材の間に横木5を架け、その上に支え木4を渡し、更にその上に断熱性支持材016と同一程度の深さの防熱材ブロツク6を載置するとともに、それと断熱性支持材016との間にそれぞれグラスウール防熱材1 The support structure 017 formed in the upper, applying crosspiece 5 between the lower end member of a support beam 015 which faces, passing trees 4 supported thereon, further heat-insulating support member 016 the same degree of depth and thereon as well as placing the heat shield block 6, the same respective glass wool insulation material between the heat-insulating support member 016 1
7,17を圧装し、続いてグラスウール防熱材8を防熱材ブロツク6の上面に貼付け、断熱性支持材016の上面より若干突出した状態として支持構造017側に防熱構造を造り付けておく。 The 7 and 17 were 圧装, followed Paste glass wool insulation material 8 on the upper surface of the heat shield block 6, kept with build insulation structure to the support structure 017 side in a state projecting slightly from the upper surface of the heat-insulating support member 016.

次に、第2工程として、第3図に示すように、地上ブロツクとして構成されたタンク下部ブロツク9をクレーンで吊り、断熱性支持材016の上に載置するとともに、その重量でグラスウール防熱材8を下方に圧縮し、これと密接させる。 Next, as a second step, as shown in FIG. 3, hanging tank bottom block 9 configured as ground block by a crane, as well as placed on the heat-insulating support member 016, glass wool insulation material with its weight 8 is compressed downwardly so closely thereto.

このような方法において、支持構造017上にタンク底板0 In this way, the tank bottom plate 0 on the support structure 017
18が搭載される前に各断熱性支持材016の間に防熱ブロツク6,グラスウール防熱材7及び8を密充填するので、 18 insulation block 6 during each thermal insulation support 016 before is mounted, so densely packed glass wool insulation material 7 and 8,
その際の作業スペースが制約されない。 Work space at that time is not limited.

このような構造及び方法によれば、下記効果が奏せられる。 According to such a structure and method, the following effects are obtained if.

(1) 上方に制約のない広いスペースで支持構造に防熱構造を装着できるので、その作業性が良く、製造コストが低減する。 (1) it is possible to attach the insulation structure to the support structure in a wide space unconstrained upwards, its workability is good, the production cost is reduced.

(2) タンク底板は防熱構造が一体化された支持構造上に載置されるだけなので、その熱変形の影響を防熱構造に与えず、それの安全性が増す。 (2) Since the tank bottom plate is only placed on a support structure insulation structure is integrated, without affecting the thermal deformation insulation structure, its safety is increased.

〔発明の効果〕 〔Effect of the invention〕

要するに本発明構造によれば、基礎上に長手方向適宜間隔で並列された複数の支持ガーダーと、上記支持ガーダーの上に横手方向適宜間隔で並列された複数の支持ビームと、上記各支持ビームの上端に沿つてそれぞれ載置された断熱性支持材とより形成される支持構造上に搭載されるタンク底面部の防熱構造において、上記各断熱性支持材間に底面が上記支持構造に支持され両側面及び頂面が比較的薄い弾性を有する防熱材で覆われた防熱材ブロツクを密充填したことにより、液体貯蔵時に防熱材がタンクの熱変形の影響を受けず、安全性の高いタンク底面部の防熱構造を得るから、本発明は産業上極めて有益なものである。 According summary the present invention structure, a plurality of support girders in parallel in the longitudinal direction appropriate intervals on a foundation, a plurality of supporting beams in parallel in transverse direction appropriate intervals on said support girder, of each support beam in insulation structure of the tank bottom portion to be mounted on along connexion respectively placed on thermal insulation support more formed support structure on the upper end, both sides bottom between the respective heat-insulating support member is supported by said support structure by the heat shield block covered with insulation material surface and the top surface has a relatively thin elastic densely packed, heat shield is not affected by the thermal deformation of the tank when the liquid storage, high safety tank bottom portion since obtaining a heat insulating structure, the present invention is extremely useful industrially.

また、本発明方法によれば、基礎上に長手方向適宜間隔で並列された複数の支持ガーダーと、上記支持ガーダーの上に横手方向適宜間隔で並列された複数の支持ビームと、上記各支持ビームの上端に沿つてそれぞれ載置された断熱性支持材とより形成される支持構造上にタンクを支持する防熱構造を施工するに際し、上記各断熱性支持材間に防熱材ブロツクを密充填する第1工程と、上記支持構造上に上記タンクの底面部を載置する第2工程とよりなることにより、防熱施工時に上方クリヤランスの制約がなく、施工能率の高いタンク底面部の防熱構造の施工方法を得るから本発明は産業上極めて有益なものである。 Further, according to the present invention, a plurality of support girders in parallel in the longitudinal direction appropriate intervals on a foundation, a plurality of supporting beams in parallel in transverse direction appropriate intervals on said support girder, each of the support beams upon the insulation structure supporting the tank along connexion respectively placed on thermal insulation support more formed support structure at the upper end of the construction, the densely filled with heat shield block between the respective heat-insulating support member a first step, by becoming more second step of placing the bottom of the tank on the support structure, no restriction of the upper Clearance during insulation construction, the construction method of the insulation structure of the high construction efficiency tank bottom portion since obtaining the present invention is the extremely valuable industrial.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図は本発明を液化ガス運搬船に適用した一実施例を示す横断面図、第2図は第1図II部の部分拡大図、第3 Figure 1 is a cross-sectional view showing an embodiment of applying the present invention to a liquefied gas carrier, Figure 2 is a partially enlarged view of FIG. 1 Part II, Chapter 3
図は第1図のタンク底部の防熱構造への下部タンクブロツクの取付け要領を示す同じく横断面図である。 Figure is likewise cross-sectional view showing the mounting manner of the lower Tankuburotsuku to insulation structure of the tank bottom of Figure 1. 第4図は公知の液化ガス運搬船のタンク底面部防熱構造を示す部分横断面図である。 FIG. 4 is a partial cross sectional view of a tank bottom portion insulation structure known liquefied gas carrier. 1……液化ガスタンク、2……アンカーリング、3…… 1 ...... liquefied gas tank, 2 ...... anchor ring, 3 ......
防熱材、4……支え木、5……横木、6……防熱材ブロツク、7,8……グラスウール防熱材、9……タンク下部ブロツク、10……ワイヤ、11……吊り枠、 013……内底板、014……支持ガーダー、015……支持ビーム、016……断熱性支持材、017……支持構造、018… Heat shield, 4 ...... support trees, 5 ...... rungs, 6 ...... heat shield block, 7,8 ...... glass wool insulation material, 9 ...... tank bottom block, 10 ...... wire, 11 ...... hanging frame, 013 ... ... inner bottom plate, 014 ...... support girder, 015 ...... support beam, 016 ...... thermal insulation support, 017 ...... support structure 018 ...
…タンク底板、021……保護シート。 ... tank bottom plate, 021 ...... protective sheet.

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】基礎上に長手方向適宜間隔で並列された複数の支持ガーダーと、上記支持ガーダーの上に横手方向適宜間隔で並列された複数の支持ビームと、上記各支持ビームの上端に沿つてそれぞれ載置された断熱性支持材とより形成される支持構造上に搭載されるタンク底面部の防熱構造において、上記各断熱性支持材間に底面が上記支持構造に支持され両側面及び頂面が比較的薄い弾性を有する防熱材で覆われた防熱材ブロツクを密充填したことを特徴とするタンク底面部の防熱構造。 A plurality of support girders that to 1. A on basis in parallel with the longitudinal direction appropriate intervals, and a plurality of supporting beams in parallel in transverse direction appropriate intervals on said support girder, along the upper end of each support beam in insulation structure of the tank bottom portion mounted connexion respectively placed on thermal insulation support more formed support structure, both sides and the top bottom between the respective heat-insulating support member is supported by said support structure insulation structure of the tank bottom portion, characterized in that the surface is densely packed with heat shield block covered with insulation material having a relatively thin resilient.
  2. 【請求項2】基礎上に長手方向適宜間隔で並列された複数の支持ガーダーと、上記支持ガーダーの上に横手方向適宜間隔で並列された複数の支持ビームと、上記各支持ビームの上端に沿つてそれぞれ載置された断熱性支持材とより形成される支持構造上にタンクを支持する防熱構造を施工するに際し、上記各断熱性支持材間に防熱材ブロツクを密充填する第1工程と、上記支持構造上に上記タンクの底面部を載置する第2工程とよりなることを特徴とするタンク底面部の防熱構造の施工方法。 A plurality of support girders that the wherein on a foundation in parallel in the longitudinal direction appropriate intervals, and a plurality of supporting beams in parallel in transverse direction appropriate intervals on said support girder, along the upper end of each support beam upon for applying a heat insulating structure for supporting the tank on a supporting structure connexion respectively placed on thermal insulation support are more formed, a first step of packing the heat shield block between the respective heat-insulating support member, construction method of insulation structure of the tank bottom portion, wherein more becomes possible a second step of placing the bottom of the tank on the support structure.
JP17677287A 1987-07-15 1987-07-15 Insulation structure and a method thereof construction of the tank bottom portions Expired - Lifetime JPH079279B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17677287A JPH079279B2 (en) 1987-07-15 1987-07-15 Insulation structure and a method thereof construction of the tank bottom portions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17677287A JPH079279B2 (en) 1987-07-15 1987-07-15 Insulation structure and a method thereof construction of the tank bottom portions

Publications (2)

Publication Number Publication Date
JPS6421300A JPS6421300A (en) 1989-01-24
JPH079279B2 true JPH079279B2 (en) 1995-02-01

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