KR100457880B1 - Cargo containment system for LNG ship - Google Patents

Cargo containment system for LNG ship Download PDF

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Publication number
KR100457880B1
KR100457880B1 KR10-2001-0070735A KR20010070735A KR100457880B1 KR 100457880 B1 KR100457880 B1 KR 100457880B1 KR 20010070735 A KR20010070735 A KR 20010070735A KR 100457880 B1 KR100457880 B1 KR 100457880B1
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South Korea
Prior art keywords
secondary barrier
barrier
sliding support
attached
insulation
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KR10-2001-0070735A
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Korean (ko)
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KR20030039709A (en
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황인환
오상창
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대우조선해양 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • 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
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • 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
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • 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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam
    • 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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • 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
    • F17C2203/0631—Three or more 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
    • 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
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • F17C2203/0643—Stainless steels
    • 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
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F17C2203/0651—Invar
    • 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
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

본 발명은 액화천연가스운반선의 항온 화물창에 관한 것으로, 내벽(10)은 수직면과 수평면을 가지는 코너부를 형성하고 내벽(10)의 수평면과 수직면에는 슬라이딩 서포트(11)가 설치되고 2차 방벽(14)는 내벽(10)의 수평면과 수직면에 나란하게 형성되며 2차 방벽(14)의 외부면에는 보강재(15)가 다수개 수직하게 부착되고, 2차 방벽(14)의 보강재(15)사이에 형성된 하나의 구획에는 슬라이딩 서포트(11)의 상부 부분(12)이 고정되며 2차 방벽(14)의 보강재(15)사이에 형성된 구획에는 2차 방벽 단열재(16)들이 부착되고 2차 방벽(14)의 내부면위에는 1차 방벽 상자(17)들이 부착되고 1차 방벽 상자(17)위에는 1차 방벽(18)이 부착되게 구성된다.The present invention relates to a constant temperature cargo hold of a liquefied natural gas carrier, the inner wall 10 forms a corner having a vertical plane and a horizontal plane, the sliding support 11 is installed on the horizontal plane and the vertical plane of the inner wall 10 and the secondary barrier 14 ) Is formed parallel to the horizontal plane and the vertical plane of the inner wall 10, a plurality of reinforcement 15 is attached vertically to the outer surface of the secondary barrier 14, between the reinforcement 15 of the secondary barrier 14 In the formed section, the upper part 12 of the sliding support 11 is fixed, and in the section formed between the reinforcement 15 of the secondary barrier 14, the secondary barrier insulation 16 is attached and the secondary barrier 14 The primary barrier box 17 is attached to the inner surface of the) and the primary barrier 18 is attached to the primary barrier box 17.

Description

액화천연가스운반선의 항온 화물창{Cargo containment system for LNG ship}Cargo containment system for LNG ship

본 발명은 액화천연가스운반선의 항온 화물창에 관한 것이다.The present invention relates to a constant temperature cargo hold of a liquefied natural gas carrier.

국내 특허공보 제81-1627호에는 선박의 액화가스용 유체 밀폐 항온 화물창이 소개되고 있는데, 화물창은 2개의 연속되어 있는 밀폐 장벽으로 되어 있으며 이러한 밀폐 장벽들은 1차 단열장벽과 2차 단열장벽사이에 교대로 설치된다.In Korean Patent Publication No. 81-1627, a fluid sealed constant temperature cargo hold for liquefied gas of a ship is introduced. The cargo hold consists of two continuous sealing barriers, which are interposed between the primary insulation barrier and the secondary insulation barrier. Installed alternately.

도1에는 종래의 항온 화물창의 구성이 도시되는데, 선체 바닥을 이루는내벽(1)에는 수직하게 칸막이(2)가 연결된다. 내벽(1)과 칸막이(2)에는 단열제품이 내장된 목재 상자(3)가 나사못에 의해 부착된다.1 shows a configuration of a conventional constant temperature cargo hold, in which a partition 2 is vertically connected to an inner wall 1 forming the bottom of the hull. On the inner wall 1 and the partition 2, a wooden box 3 containing a thermal insulation product is attached by screws.

목재 단열상자(3)위에는 인바(invar)강판(4)이 스라이밍 조인트에 의해 부착된다. 인바강판(4)위에는 단열 상자(6)가 놓여지고 그 위에는 인바아(7)가 위와 같은 방법으로 부착된다.On the wooden insulation box 3 an invar steel plate 4 is attached by means of a slimming joint. An insulated box 6 is placed on the invar steel plate 4, and the inbar 7 is attached on the invar steel plate 4 in the same manner as above.

그러나 이러한 항온 화물창을 제작하는데는 단열 상자와 인바강판의 설치 및 용접시 과도한 공수가 필요하며 박판의 인바 제작시 취급 주의가 요구된다.However, the manufacture of such constant temperature cargo hold requires excessive air handling during installation and welding of the insulation box and the Invar steel plate, and handling care is required when manufacturing the Invar of the thin plate.

본 발명의 목적은 상기와 같은 단점을 해결하기 위하여 2차 방벽의 보강재사이에 2차 방벽 단열재를 수용하고 2차 방벽을 슬라이딩 서포트에 의해서 내벽위에 지지하며 2차 방벽위에는 단열 상자와 인바강판을 부착시켜 구성된 액화천연가스운반선의 항온 화물창을 제공하고자 하는 것이다.An object of the present invention is to accommodate the secondary barrier insulation between the reinforcement of the secondary barrier in order to solve the above disadvantages, and to support the secondary barrier on the inner wall by the sliding support and to attach the insulation box and the Invar steel plate on the secondary barrier It is to provide a constant temperature cargo hold of liquefied natural gas carriers.

본 발명의 액화천연가스운반선의 항온 화물창은 내벽이 수직면과 수평면을 가지는 코너부를 형성하고 내벽의 수평면과 수직면에는 슬라이딩 서포트가 설치되고 2차 방벽는 내벽의 수평면과 수직면에 나란하게 형성되며 2차 방벽의 외부면에는 보강재가 다수개 수직하게 부착되고, 2차 방벽의 보강재사이에 형성된 하나의 구획에는 슬라이딩 서포트의 상부 부분이 고정되며 2차 방벽의 보강재사이에 형성된 구획에는 2차 방벽 단열재들이 부착되고 2차 방벽의 내부면위에는 1차 방벽 상자들이 부착되고 1차 방벽 상자위에는 1차 방벽이 부착되게 구성된다.In the constant temperature cargo hold of the LNG carrier of the present invention, the inner wall forms a corner portion having a vertical plane and a horizontal plane, and sliding supports are installed on the horizontal plane and the vertical plane of the inner wall, and the secondary barrier is formed parallel to the horizontal plane and the vertical plane of the inner wall of the secondary barrier. A plurality of stiffeners are vertically attached to the outer surface, and the upper part of the sliding support is fixed to one compartment formed between the stiffeners of the secondary barrier, and the secondary barrier insulation is attached to the compartment formed between the stiffeners of the secondary barrier. Primary barrier boxes are attached on the inner surface of the primary barrier and primary barriers are attached on the primary barrier box.

도 1은 종래의 액화천연가스운반선 항온 화물창의 구성을 도시하는 도면.1 is a view showing the configuration of a conventional LNG carrier constant temperature cargo hold.

도 2는 본 발명의 액화천연가스운반선의 항온 화물창의 구성을 도시하는 도면.Figure 2 is a view showing the configuration of the constant temperature cargo hold of the liquefied natural gas carrier of the present invention.

< 도면의 주요부분에 대한 부호의 간단한 설명 ><Brief description of symbols for the main parts of the drawings>

10 : 내벽 11 : 슬라이딩 서포트10: inner wall 11: sliding support

14 : 2차 방벽 15 : 보강재14: secondary barrier 15: reinforcement

16 : 2차 방벽 단열재 17 : 1차 방벽 상자16: secondary barrier insulation 17: primary barrier box

18 : 1차 방벽18: primary barrier

본 발명을 첨부된 도면에 도시된 실시예를 참조하여 상세히 설명한다.The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

도2에는 본 발명의 항온 화물창의 구성이 도시되는데, 내벽(Inner Hull)(10)은 수직면과 수평면을 가지는 코너부를 형성한다.Figure 2 shows the configuration of the constant temperature cargo hold of the present invention, the inner wall (Inner Hull) 10 forms a corner having a vertical plane and a horizontal plane.

내벽(10)의 수평면과 수직면에는 슬라이딩 서포트(Sliding Support)(11)가 설치된다.A sliding support 11 is installed on the horizontal and vertical surfaces of the inner wall 10.

슬라이딩 서포트(11)는 상부 부분(12)과 하부 부분(13)으로 구성되고 상부 부분(12)과 하부 부분(13)은 서로에 대하여 미끄럼 이동이 가능하다.The sliding support 11 consists of an upper part 12 and a lower part 13 and the upper part 12 and the lower part 13 are slidable with respect to each other.

슬라이딩 서포트(11)는 9% Ni 강 또는 오오스테나이트계 스테인레스강으로 제조된다.The sliding support 11 is made of 9% Ni steel or austenitic stainless steel.

2차 방벽(Secondary Barrier)(14)는 내벽(10)의 수평면과 수직면에 나란하게 형성되며 2차 방벽(14)의 외부면에는 종 부재(Longitudinal member)인 보강재(15)가 다수개 수직하게 부착된다.Secondary barrier (Secondary Barrier) 14 is formed in parallel to the horizontal plane and the vertical plane of the inner wall 10, the outer surface of the secondary barrier 14 is a longitudinal member (Longitudinal member) a plurality of reinforcement (15) vertically Attached.

2차 방벽(14)과 보강재(15)는 9% Ni강 또는 오오스테나이트계 스테인레스강으로 제조된다.The secondary barrier 14 and the reinforcement 15 are made of 9% Ni steel or austenitic stainless steel.

2차 방벽(14)의 보강재(15)사이에 형성된 하나의 구획에는 슬라이딩 서포트(11)의 상부 부분(12)이 고정된다.The upper part 12 of the sliding support 11 is fixed to one compartment formed between the reinforcement 15 of the secondary barrier 14.

또한 2차 방벽(14)의 보강재(15)사이에 형성된 구획에는 2차 방벽 단열재(Secondary Rigid Insulation)(16)들이 부착된다.Secondary barrier insulation (Secondary Rigid Insulation) (16) is attached to the partition formed between the reinforcement (15) of the secondary barrier (14).

2차 방벽 단열재(16)는 기존의 단열 상자와는 달리 다공성 단열재 폼(form)으로 제작된다.The secondary barrier insulation 16 is made of a porous insulation foam (form) unlike the conventional insulation box.

2차 방벽(14)의 내부면위에는 1차 방벽 상자(Primary insulation Box)(17)들이 부착되고 1차 방벽 상자(17)위에는 1차 방벽(Primary Barrier)(18)이 부착된다.Primary insulation boxes 17 are attached to the inner surface of the secondary barrier 14, and primary barriers 18 are attached to the primary barrier box 17.

1차 방벽(18)은 인바아 0.7 mm 두께 또는 주름진 스테인레스 강(Corrugated Stainless Steel) 1.2 mm 두께가 사용된다.The primary barrier 18 is 0.7 mm thick invar or 1.2 mm thick corrugated stainless steel.

상기와 같은 본 발명의 액화천연가스운반선의 항온 화물창은 2차 방벽이 슬라이딩 서포트에 의해 지지되어 2차 방벽의 자유로운 수축 팽창을 수용한다.즉, 본 발명은 슬라이딩 서포트(11)의 상부 부분(12)과 하부 부분(13)의 판재를 서로 겹치게 하여 슬라이딩 서포트(11)의 상부 부분(12)은 2차 방벽(14)에 그리고 슬라이딩 서포트(11)의 하부 부분(13)은 내벽과 용접으로 접합하여 상기 슬라이딩 서포트(11)의 하부 부분(13)이 상부 부분(12)에 상호 고정되지 않고 단순히 올려진 상태이므로 미끄럼이동이 가능하며 열수축 팽창에 있어서도, 슬라이딩 서포트(11)가 9% Ni 강 또는 오오스테나이트계 스테인레스강과 단열재의 복합구조로 제조되고 또한 2차 방벽(14)과 보강재(15)를 인바 강이 아닌 열팽창률이 좋은 9% Ni 강 또는 오오스테나이트계 스테인레스강을 적용함으로써 자유로운 수축과 팽창을 상기 2차 방벽(14)이 수용하게 되는 것이다.The constant temperature cargo hold of the liquefied natural gas carrier of the present invention as described above has a secondary barrier supported by a sliding support to accommodate free shrinkage expansion of the secondary barrier. That is, the present invention provides an upper portion 12 of the sliding support 11. ) And the plates of the lower part 13 overlap each other so that the upper part 12 of the sliding support 11 is joined to the secondary barrier 14 and the lower part 13 of the sliding support 11 is welded to the inner wall. Since the lower portion 13 of the sliding support 11 is not fixed to the upper portion 12 but is simply raised, the sliding portion is capable of sliding, and even in thermal contraction expansion, the sliding support 11 is made of 9% Ni steel or Manufactured from a composite structure of austenitic stainless steel and heat insulator, and the secondary barrier 14 and reinforcement 15 are made of 9% Ni steel or austenitic stainless steel with good thermal expansion rate instead of Invar steel. As a result, the secondary barrier 14 receives free contraction and expansion.

상기와 같이 구성된 본 발명의 액화천연가스운반선의 항온 화물창은 2차 방벽을 슬라이딩 서포트로 지지하고 2차 방벽 단열재를 목재 상자가 아닌 다공성 단열 폼을 적용하며 2차 방벽을 인바 강이 아닌 9% Ni 강 또는 오오스테나이트계 스테인레스강을 적용하므로써 2차방벽을 일반구조물과 같은 용접방법과 제작공법을 적용하여 제작의 간편함과 제작공수의 절감을 제공한다.The constant temperature cargo hold of the liquefied natural gas carrier of the present invention configured as described above supports the secondary barrier with the sliding support, applies the secondary barrier insulation to the porous insulation foam instead of the wooden box, and the secondary barrier to the 9% Ni not the Invar steel. By applying steel or austenitic stainless steel, the secondary barrier is applied the same welding method and fabrication method as general structures to provide simplicity of production and reduction of manufacturing man-hours.

Claims (5)

내벽(10)은 수직면과 수평면을 가지는 코너부를 형성하는 액화천연가스운반선에 있어서, 내벽(10)의 수평면과 수직면에는 슬라이딩 서포트(11)가 설치되고 2차 방벽(14)는 내벽(10)의 수평면과 수직면에 나란하게 형성되며 2차 방벽(14)의 외부면에는 보강재(15)가 다수개 수직하게 부착되고, 2차 방벽(14)의 보강재(15) 사이에 형성된 하나의 구획에는 슬라이딩 서포트(11)의 상부 부분(12)이 고정되며 2차 방벽(14)의 보강재(15) 사이에 형성된 구획에는 2차 방벽 단열재(16)들이 부착되고 2차 방벽(14)의 내부면위에는 1차 방벽 상자(17)들이 부착되고 1차 방벽 상자(17)위에는 1차 방벽(18)이 부착되게 구성된 항온 화물창.The inner wall 10 is a liquefied natural gas carrier that forms a corner portion having a vertical plane and a horizontal plane. A sliding support 11 is installed on the horizontal plane and the vertical plane of the inner wall 10, and the secondary barrier 14 is formed on the inner wall 10. It is formed side by side in the horizontal and vertical plane, a plurality of reinforcement 15 is attached vertically to the outer surface of the secondary barrier 14, the sliding support in one compartment formed between the reinforcement 15 of the secondary barrier 14 Secondary barrier insulation 16 is attached to the compartment formed between the reinforcement 15 of the secondary barrier 14 and the upper portion 12 of 11 is fixed and on the inner surface of the secondary barrier 14. Barrier box (17) is attached to the constant temperature cargo hold configured to be attached to the primary barrier box (17) on the primary barrier box (17). 제1항에 있어서, 상기 슬라이딩 서포트(11)는 상부 부분(12)과 하부 부분(13)으로 구성되고 상부 부분(12)과 하부 부분(13)은 서로에 대하여 슬라이딩 이동 가능하며 슬라이딩 서포트(11)는 9% Ni 강 또는 오오스테나이트계 스테인레스강과 단열재의 복합구조로 제조되는 항온 화물창.2. The sliding support (11) according to claim 1, wherein the sliding support (11) consists of an upper portion (12) and a lower portion (13) and the upper portion (12) and the lower portion (13) are slidable relative to each other and the sliding support (11). ) Is a constant temperature cargo hold made of a composite structure of 9% Ni steel or austenitic stainless steel and insulation. 제1항에 있어서, 상기 2차 방벽(14)과 보강재(15)는 9% Ni 강 또는 오오스테나이트계 스테인레스강으로 제조되는 항온 화물창.2. The constant temperature cargo hold of claim 1 wherein the secondary barrier and the reinforcement are made of 9% Ni steel or austenitic stainless steel. 제1항에 있어서, 상기 2차 방벽 단열재(16)는 다공성 단열재 폼(form) 또는 단열상자로 제조되는 항온 화물창.The constant temperature cargo hold according to claim 1, wherein the secondary barrier insulation (16) is made of a porous insulation foam or insulation box. 제1항에 있어서, 상기 1차 방벽(18)은 인바강 또는 주름진 스테인레스강이 사용되는 항온 화물창.The constant temperature cargo hold according to claim 1, wherein the primary barrier (18) is made of Invar steel or corrugated stainless steel.
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