KR20220095790A - Metal membrane of cryogenic fluid storage tank - Google Patents

Metal membrane of cryogenic fluid storage tank Download PDF

Info

Publication number
KR20220095790A
KR20220095790A KR1020200187664A KR20200187664A KR20220095790A KR 20220095790 A KR20220095790 A KR 20220095790A KR 1020200187664 A KR1020200187664 A KR 1020200187664A KR 20200187664 A KR20200187664 A KR 20200187664A KR 20220095790 A KR20220095790 A KR 20220095790A
Authority
KR
South Korea
Prior art keywords
wrinkle
fluid storage
cryogenic fluid
notch
wrinkle part
Prior art date
Application number
KR1020200187664A
Other languages
Korean (ko)
Inventor
허행성
황범석
박광준
강중규
Original Assignee
대우조선해양 주식회사
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 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020200187664A priority Critical patent/KR20220095790A/en
Publication of KR20220095790A publication Critical patent/KR20220095790A/en

Links

Images

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
    • F17C13/004—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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • 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
    • F17C2203/06—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
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Abstract

The present invention provides a metal membrane of a cryogenic fluid storage tank, comprising: a first direction wrinkle part that protrudes upward on a metal sheet and extends along any one direction; and a second direction wrinkle part that protrudes upward on the metal sheet and extends in a direction perpendicular to the first direction wrinkle part, wherein the second direction wrinkle part includes: an elevated part having a higher height and a narrower width at a part crossing the first direction wrinkle part; a second notch formed along a line where the width of the second direction wrinkle part narrows on the inclined surface near the elevated part; and a straight groove formed in a direction perpendicular to an extension direction of the second direction wrinkle part. The metal membrane of a cryogenic fluid storage tank according to the present invention has an effect of remarkably improving elasticity and pressure resistance through shape improvement at an intersection part where the first direction wrinkle part and the second direction wrinkle part intersect.

Description

극저온 유체 저장탱크의 금속 멤브레인 {Metal membrane of cryogenic fluid storage tank}Metal membrane of cryogenic fluid storage tank

본 발명은 극저온 유체 저장탱크의 금속 멤브레인에 관한 것으로서, 보다 상세하게는, 극저온 유체 저장탱크의 밀봉벽을 형성하는 금속 멤브레인 상에서 횡방향 및 종방향으로 형성되는 주름부가 서로 교차하는 교차 부위에 피로하중이 집중되는 것을 완화시킬 수 있는 금속 멤브레인의 형상 구조에 관한 것이다.The present invention relates to a metal membrane of a cryogenic fluid storage tank, and more particularly, a fatigue load at an intersection where corrugations formed in the transverse and longitudinal directions intersect each other on the metal membrane forming the sealing wall of the cryogenic fluid storage tank. It relates to a shape structure of a metal membrane that can alleviate this concentration.

일반적으로 액화천연가스 저장탱크는 약 -163℃의 초저온 액화천연가스(LNG: Liquefied Natural Gas)를 저장 또는 운반하기 위한 것으로, 극저온의 액화천연가스를 안전하게 저장하기 위하여 금속 멤브레인으로 이루어진 밀봉벽과 밀봉벽 주위를 둘러싸고 있는 단열층으로 이루어진다.In general, a liquefied natural gas storage tank is for storing or transporting ultra-low temperature liquefied natural gas (LNG) at about -163 ° C. It consists of an insulating layer surrounding the wall.

금속 멤브레인은 극저온 상태의 액화천연가스와 직접적으로 접촉되므로, 응력 변화에 대응할 수 있도록 저온 취성에 강한 금속 재질로 제작되며, 반복적인 온도 변화 및 액화천연가스의 하중 변화에 대한 수축 및 팽창이 가능한 구조로 설계되어야 한다.Since the metal membrane is in direct contact with the liquefied natural gas in the cryogenic state, it is made of a metal material that is strong in low-temperature brittleness to cope with stress changes, and has a structure that can contract and expand in response to repeated temperature changes and changes in the load of liquefied natural gas. should be designed as

금속 멤브레인은 열수축 발생시 용접 부위가 열응력을 받아 파손되는 것을 방지하기 위하여 낮은 면강성(in-plate stiffness)이 요구되며, 이러한 요구를 만족시키기 위하여 통상적으로 금속 멤브레인 시트 상에 횡방향 및 종방향으로 배열되는 복수의 주름부(corrugation)를 형성하고 있다.The metal membrane requires low in-plate stiffness in order to prevent the welding site from being damaged by thermal stress when heat shrinkage occurs. A plurality of corrugations arranged are formed.

주름부는 편평한 멤브레인 시트 상에 가공을 통하여 볼록하게 융기된 형태 또는 오목하게 함몰된 형태의 주름을 형성하는 것으로서, 극저온 조건에서 온도 변화에 따라 일정량 변형되어 금속 멤브레인이 작용하는 열응력을 줄여준다.The wrinkle part is to form a convexly raised or concavely recessed wrinkle through processing on a flat membrane sheet, and is deformed by a certain amount according to a temperature change in a cryogenic condition to reduce the thermal stress acting on the metal membrane.

한편, 횡방향 및 종방향 주름부가 서로 교차하는 지점에는 교차부(knot)가 형성되는데, 이러한 교차부는 특히 응력집중에 취약한 부분으로서 저장탱크 내에서 발생하는 슬로싱 등의 하중에 의하여 붕괴될 위험이 높다.On the other hand, a knot is formed at the point where the transverse and longitudinal corrugations intersect with each other. This intersection is particularly vulnerable to stress concentration, and there is a risk of collapse due to loads such as sloshing occurring in the storage tank. high.

또한, 교차부에 대한 피로시험(fatigue test) 결과에 따라 밀봉벽 주위에 설치되는 단열층 등 단열시스템의 디자인이 결정되기 때문에, 교차부는 극저온 유체 저장탱크에서 매우 중요한 요소로 작용한다.In addition, since the design of the insulation system, such as the insulation layer installed around the sealing wall, is determined according to the fatigue test results on the intersection, the intersection serves as a very important factor in the cryogenic fluid storage tank.

따라서, 극저온 유체 저장탱크의 설계에 있어서 금속 멤브레인의 교차부에서의 신축성 및 내압성능을 높이는 것이 중요한 과제로 대두되고 있으며, 교차부를 특수한 형상으로 설계하여 교차부의 성능을 높이고자 하는 연구가 최근까지도 활발하게 이루어지고 있다.Therefore, in the design of the cryogenic fluid storage tank, increasing the elasticity and pressure resistance at the intersection of the metal membrane is emerging as an important task. is being done

본 발명의 목적은, 극저온 유체 저장탱크의 금속 멤브레인에서 종방향 및 횡방향 주름부가 교차하는 교차부의 형상 개선을 통하여 신축성 및 내압성능을 극대화하고, 극저온에 의한 반복적인 열수축/팽창 및 저장탱크 내에서 발생하는 각종 하중에 의하여 특정 부위에 피로하중이 집중되는 것을 효과적으로 방지할 수 있는 극저온 유체 저장탱크의 금속 멤브레인을 제공함에 있다.An object of the present invention is to maximize elasticity and pressure resistance performance through improvement of the shape of the intersection where longitudinal and transverse corrugations intersect in the metal membrane of a cryogenic fluid storage tank, and repeated thermal contraction/expansion by cryogenic temperature and in the storage tank An object of the present invention is to provide a metal membrane for a cryogenic fluid storage tank that can effectively prevent a fatigue load from being concentrated on a specific area by various loads generated.

상기의 목적을 달성하기 위한 본 발명의 일 측면에 따르면, 금속 시트 상에서 상방으로 융기되며 어느 일 방향을 따라 연장되는 제1방향 주름부; 및 상기 금속 시트 상에서 상방으로 융기되며 상기 제1방향 주름부와 직교하는 방향으로 연장되는 제2방향 주름부를 포함하고, 상기 제2방향 주름부는, 상기 제1방향 주름부와 교차하는 부위에서 높이가 더 높고 폭은 더 좁게 형성되는 융기부; 상기 융기부 부근의 경사면에 상기 제2방향 주름부의 폭이 좁아지는 라인을 따라 형성되는 제2노치; 및 상기 제2방향 주름부의 연장 방향과 수직한 방향으로 형성되는 일자홈을 포함하는, 극저온 유체 저장탱크의 금속 멤브레인이 제공될 수 있다.According to one aspect of the present invention for achieving the above object, the first direction wrinkle portion raised upwardly on the metal sheet and extending along any one direction; and a second-direction wrinkled portion raised upward on the metal sheet and extending in a direction perpendicular to the first-direction wrinkled portion, wherein the second-direction wrinkled portion has a height at a portion crossing the first-direction wrinkled portion ridges formed higher and narrower in width; a second notch formed along a line in which the width of the wrinkle portion in the second direction is narrowed on an inclined surface near the raised portion; and a straight groove formed in a direction perpendicular to the extending direction of the second direction wrinkle part, the metal membrane of the cryogenic fluid storage tank may be provided.

상기 일자홈은 상기 제2방향 주름부의 폭방향 중심에 형성될 수 있다.The straight groove may be formed in the center of the width direction of the wrinkle portion in the second direction.

상기 제2방향 주름부는, 상기 제1방향 주름부와 교차하는 부위에서 하방으로 함몰된 형태로 형성되는 제3노치를 더 포함할 수 있고, 상기 제3노치는 상기 제2노치와 인접하게 형성되되 상기 제2방향 주름부의 길이방향을 따른 중심선을 기준으로 대향되는 위치에 각각 형성될 수 있다.The second direction wrinkle portion may further include a third notch formed in a downwardly depressed form at a portion crossing the first direction wrinkle portion, wherein the third notch is formed adjacent to the second notch The second direction wrinkle portion may be respectively formed at opposing positions with respect to the center line along the longitudinal direction.

상기 일자홈은 상기 융기부를 기준으로 상기 제3노치의 바깥쪽 영역에 바로 인접하게 형성될 수 있다.The straight groove may be formed directly adjacent to an area outside the third notch based on the raised portion.

상기 제1방향 주름부는, 상기 제2방향 주름부와 교차하는 부위에서 하방으로 함몰된 형태로 형성되는 제1노치를 포함할 수 있고, 상기 제1노치는 상기 제1방향 주름부의 길이방향을 따른 중심선을 기준으로 대향되는 위치에 각각 형성될 수 있다.The first direction wrinkle portion may include a first notch formed in a downwardly depressed shape at a portion crossing the second direction wrinkle portion, wherein the first notch is formed along the longitudinal direction of the first direction wrinkle portion They may be respectively formed at positions opposite to each other with respect to the center line.

상기 융기부는 상부면이 일(一)자의 직선 형태로 형성될 수 있다.The upper surface of the raised portion may be formed in a straight line shape.

본 발명에 따른 극저온 유체 저장탱크의 금속 멤브레인은 교차부의 형상 개선을 통하여 신축성 및 내압성능이 현저하게 향상됨으로써, 극저온에 의한 반복적인 열수축/팽창 및 저장탱크 내에서 발생하는 각종 하중에 대하여 강인한 구조를 가질 수 있으며, 궁극적으로 극저온 유체 저장탱크의 내구성을 높이고 구조적 안정성을 향상시키는 효과가 있다.The metal membrane of the cryogenic fluid storage tank according to the present invention has a structure that is remarkably improved in elasticity and pressure resistance through improvement of the shape of the cross section, so that it has a strong structure against repeated thermal contraction/expansion due to cryogenic temperatures and various loads occurring in the storage tank. It can have, and ultimately has the effect of increasing the durability of the cryogenic fluid storage tank and improving the structural stability.

본 발명의 효과들은 상술된 효과로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 아래의 기재로부터 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the above-described effects, and other effects not mentioned will be clearly understood from the following description.

도 1은 본 발명에 따른 금속 멤브레인의 교차부 구조를 나타낸 사시도이다.
도 2는 본 발명에 따른 금속 멤브레인의 교차부 구조를 나타낸 평면도이다.1 is a perspective view showing a structure of a cross section of a metal membrane according to the present invention.
Figure 2 is a plan view showing the structure of the cross section of the metal membrane according to the present invention.

본 발명과 본 발명의 동작상의 이점 및 본 발명의 실시에 의하여 달성되는 목적을 충분히 이해하기 위해서는 본 발명의 바람직한 실시예를 예시하는 첨부 도면 및 첨부 도면에 기재된 내용을 참조하여야만 한다.In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

본 발명에서 관례상 탱크의 요소에 적용된 용어 '상부' 또는 '위'는 중력에 대한 방향과는 관계없이 탱크의 내측을 향하는 방향을 가리키는 것이고, 마찬가지로, 용어 '하부' 또는 '아래'는 중력에 대한 방향과는 관계없이 탱크의 외측을 향하는 방향을 가리키는 것이다.In the present invention, the terms 'upper' or 'above' as customarily applied to elements of a tank refer to the direction towards the inside of the tank, irrespective of the direction to gravity, likewise the terms 'lower' or 'down' Regardless of the direction to the tank, it indicates the direction toward the outside of the tank.

또한, 본 명세서에서 저장탱크에 저장되는 극저온 유체는, 대표적인 액화천연가스 이외에도 LPG(Liquefied Petroleum Gas), LEG(Liquefied Ethane Gas), 액화에틸렌가스(Liquefied Ethylene Gas), 액화프로필렌가스(Liquefied Propylene Gas) 등과 같이 저온으로 액화시켜 저장/수송될 수 있는 모든 종류의 극저온 유체를 포함하는 개념으로 이해될 수 있다.In addition, the cryogenic fluid stored in the storage tank in the present specification is, in addition to the representative liquefied natural gas, LPG (Liquefied Petroleum Gas), LEG (Liquefied Ethane Gas), liquefied ethylene gas (Liquefied Ethylene Gas), liquefied propylene gas (Liquefied Propylene Gas) It can be understood as a concept including all kinds of cryogenic fluids that can be stored/transported by being liquefied at a low temperature, such as.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명함으로써 본 발명을 상세히 설명한다. 각 도면에 제시된 동일한 참조부호는 동일한 부재를 나타낸다.Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

도 1 및 도 2는 각각 본 발명에 따른 금속 멤브레인의 교차부 구조를 나타낸 사시도 및 평면도이다.1 and 2 are perspective and plan views, respectively, showing the structure of the cross section of the metal membrane according to the present invention.

도 1 및 도 2를 참조하면, 본 발명에 따른 금속 멤브레인(100)은 편평한 멤브레인 시트 상에 볼록한 형태로 융기된 제1방향 주름부(110) 및 제2방향 주름부(120)를 포함할 수 있다. 제1방향 주름부(110)의 폭(W1)은 제2방향 주름부(120)의 폭(W2)보다 작게 형성될 수 있으며 높이도 낮게 형성될 수 있다.1 and 2 , the metal membrane 100 according to the present invention may include a first direction wrinkle part 110 and a second direction wrinkle part 120 raised in a convex shape on a flat membrane sheet. have. The width W1 of the wrinkle part 110 in the first direction may be formed to be smaller than the width W2 of the wrinkle part 120 in the second direction, and may be formed to have a lower height.

제1방향 주름부(110)와 제2방향 주름부(120)는 서로 직교하는 방향으로 형성되며, 따라서 제1방향 주름부(110)와 제2방향 주름부(120)가 교차하는 부위에 교차부가 형성된다.The first direction wrinkle part 110 and the second direction wrinkle part 120 are formed in a direction orthogonal to each other, and thus the first direction wrinkle part 110 and the second direction wrinkle part 120 intersect at the intersection. wealth is formed

도면에는 각각 하나의 제1방향 주름부(110)와 제2방향 주름부(120)만 도시되어 있으나, 금속 멤브레인(100) 상에는 서로 나란하게 연장되는 다수의 제1방향 주름부(110)와 서로 나란하게 연장되는 다수의 제2방향 주름부(120)가 서로 직교하도록 형성되어 전체적으로 격자 형태의 주름 구조를 가질 수 있다.Although only one first direction wrinkle part 110 and one second direction wrinkle part 120 are shown in the drawings, respectively, a plurality of first direction wrinkle parts 110 extending in parallel with each other on the metal membrane 100 and each other A plurality of second direction wrinkle portions 120 extending in parallel are formed to be perpendicular to each other, and thus may have a wrinkle structure in the form of a lattice as a whole.

한편, 본 발명은 제1방향 주름부(110)와 제2방향 주름부(120)가 교차하는 부위에 형성되는 교차부의 형상적 구조에 그 특징이 있다. 이하에서는 이러한 교차부의 구조에 대하여 상세하게 살펴본다.On the other hand, the present invention is characterized in the shape of the cross section formed at the intersection of the first direction wrinkled portion 110 and the second direction wrinkled portion 120 intersect. Hereinafter, the structure of such an intersection will be described in detail.

먼저, 제1방향 주름부(110)는 제2방향 주름부(120)와 만나는 지점에서 폭이 다소 줄어들 수 있으며, 이때 폭이 줄어드는 위치에서 제1방향 주름부(110)의 상부에는 제1방향 주름부(110)가 융기된 방향과 반대되는 방향, 즉 하방으로 함몰된 형태의 제1노치(111)가 형성될 수 있다.First, the first direction wrinkle part 110 may have a slightly reduced width at the point where it meets the second direction wrinkle part 120 , and at this time, the width is reduced in the upper part of the first direction wrinkle part 110 in the first direction. A direction opposite to the direction in which the wrinkle part 110 is raised, that is, the first notch 111 in a downwardly depressed form may be formed.

제1노치(111)는 제1방향 주름부(110)가 제2방향 주름부(120)와 만나는 지점에 바로 인접하여 형성될 수 있으며, 제1방향 주름부(110)의 길이방향을 따른 중심선을 기준으로 대향되는 위치에 각각 형성될 수 있다.The first notch 111 may be formed immediately adjacent to a point where the first direction wrinkle part 110 meets the second direction wrinkle part 120 , and is a centerline along the longitudinal direction of the first direction wrinkle part 110 . may be respectively formed at positions opposite to each other.

또한, 도시된 바를 참조하면, 제1방향 주름부(110)는 제2방향 주름부(120)의 길이방향을 따른 양 측면을 파고들도록 형성되고 있는데, 제1노치(111)는 제1방향 주름부(110)가 제2방향 주름부(120)를 파고든 영역에 형성될 수 있다.In addition, referring to the drawings, the first direction wrinkle part 110 is formed so as to dig into both sides along the longitudinal direction of the second direction wrinkle part 120 , the first notch 111 is the first direction wrinkle part 120 . The part 110 may be formed in a region dug into the second direction wrinkle part 120 .

한편, 제2방향 주름부(120)는 주름이 교차하지 않고 직선으로 형성되는 부분과 대비하여 교차부에서 더 높게 융기되는 것을 알 수 있다. 이와 같이 교차 부위에 형성되는 제2방향 주름부(120)의 융기부(121)는 길이방향을 따른 양 측면으로부터 인입되는 제1방향 주름부(110)에 의하여 폭이 확연하게 줄어들게 되며, 상부면이 일(一)자의 직선 형태로 형성될 수 있다.On the other hand, it can be seen that the second direction wrinkle portion 120 rises higher at the intersection than the portion where the wrinkles do not intersect and are formed in a straight line. As described above, the raised portion 121 of the second direction wrinkle portion 120 formed at the intersection is significantly reduced in width by the first direction wrinkled portion 110 drawn in from both sides along the longitudinal direction, and the upper surface It can be formed in the form of a straight line of one (一) character.

제2방향 주름부(120)는 제1방향 주름부(110)와 교차되는 지점에서 단절되는 것은 아니며, 얇은 폭으로 형성되는 일(一)자 형태의 융기부(121)에 의해 그 연속성이 유지될 수 있다.The second direction wrinkle part 120 is not cut off at the point where it intersects the first direction wrinkle part 110, and its continuity is maintained by the one-shaped ridge 121 formed with a thin width. can be

제2방향 주름부(120)에서 융기부(121) 부근의 경사면에는 폭이 좁아지는 라인을 따라 대략 'U'자 형태 또는 '{'자 형태의 제2노치(122)가 형성될 수 있다.In the second direction wrinkle part 120 , a second notch 122 having an approximately 'U' shape or a '{' shape may be formed on the inclined surface near the raised part 121 along the narrowing line.

그리고, 제2방향 주름부(120)의 상부에는 전술한 제1노치(111)와 유사한 형태로서 길이방향을 따른 중심선을 기준으로 대향되는 위치에 각각 함몰된 형태의 제3노치(123)가 형성될 수 있다. 제3노치(123)는 제2노치(122)와 바로 인접하여 형성될 수 있다.In addition, in the upper portion of the second direction wrinkle portion 120, a shape similar to the above-described first notch 111, and a third notch 123 in a recessed form is formed at positions opposite to the center line along the longitudinal direction, respectively. can be The third notch 123 may be formed immediately adjacent to the second notch 122 .

또한, 제1방향 주름부(110)에서와는 달리, 제2방향 주름부(120) 상에는 제2방향 주름부(120)의 연장 방향과 수직한 방향으로 일자홈(124)이 추가 형성될 수 있다. 이는 제2방향 주름부(120)의 폭(W2)이 제1방향 주름부(110)의 폭(W1)보다 넓게 형성되고 제2방향 주름부(120)가 단절되지 않는 구조로 형성되기에, 제2방향 주름부(120)의 길이방향을 따른 열수축을 추가적으로 흡수할 수 있도록 구성한 것이다.Also, unlike in the first direction wrinkle part 110 , a straight groove 124 may be additionally formed on the second direction wrinkle part 120 in a direction perpendicular to the extending direction of the second direction wrinkle part 120 . This is because the width (W2) of the pleats in the second direction (120) is formed to be wider than the width (W1) of the pleats in the first direction (110) and the second direction pleats (120) are formed in a structure that is not cut, It is configured to additionally absorb heat shrinkage along the longitudinal direction of the second direction wrinkle part 120 .

일자홈(124)은 제2방향 주름부(120)의 폭방향 중심에 형성될 수 있으며, 제1방향 주름부(110)와 제2방향 주름부(120)가 교차하는 중심점을 기준으로 제3노치(123)보다 바깥쪽 영역에 바로 인접하게 형성될 수 있다.The straight groove 124 may be formed in the center of the width direction of the second direction pleats 120 , and the third direction based on the center point where the first direction pleats 110 and the second direction pleats 120 intersect. The notch 123 may be formed directly adjacent to an area outside the notch 123 .

상기와 같이 제1 내지 제3노치(111, 122, 123) 및 일자홈(124) 등을 포함하여 교차부의 형상이 개선된 본 발명에 따른 극저온 유체 저장탱크의 금속 멤브레인(100)은, 제1방향 주름부(110)와 제2방향 주름부(120)의 교차 부위에서의 신축성 및 내압성능이 현저하게 향상될 수 있고, 따라서 극저온에 의한 반복적인 열수축/팽창 및 저장탱크 내에서 발생하는 각종 하중에 대하여 강인한 구조를 가질 수 있으며, 궁극적으로 극저온 유체 저장탱크의 내구성을 높이고 구조적 안정성을 향상시키는 효과가 있다.The metal membrane 100 of the cryogenic fluid storage tank according to the present invention in which the shape of the cross section is improved including the first to third notches 111, 122, 123 and the straight groove 124 as described above, the first The elasticity and pressure resistance performance at the intersection of the directional wrinkle part 110 and the second directional wrinkle part 120 can be remarkably improved, and thus repeated thermal contraction/expansion due to cryogenic temperatures and various loads generated in the storage tank. It can have a strong structure with respect to, and ultimately has the effect of increasing the durability of the cryogenic fluid storage tank and improving the structural stability.

이상에서 설명된 본 발명은 기재된 실시예에 한정되는 것이 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 수정예 또는 변형예들은 본 발명의 특허청구범위에 속한다 하여야 할 것이다.The present invention described above is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

100: 금속 멤브레인
110: 제1방향 주름부
111: 제1노치
120: 제2방향 주름부
121: 융기부
122: 제2노치
123: 제3노치
124: 일자홈100: metal membrane
110: first direction wrinkle part
111: first notch
120: second direction wrinkle part
121: ridge
122: second notch
123: third notch
124: date home

Claims (6)

금속 시트 상에서 상방으로 융기되며 어느 일 방향을 따라 연장되는 제1방향 주름부; 및
상기 금속 시트 상에서 상방으로 융기되며 상기 제1방향 주름부와 직교하는 방향으로 연장되는 제2방향 주름부를 포함하고,
상기 제2방향 주름부는,
상기 제1방향 주름부와 교차하는 부위에서 높이가 더 높고 폭은 더 좁게 형성되는 융기부;
상기 융기부 부근의 경사면에 상기 제2방향 주름부의 폭이 좁아지는 라인을 따라 형성되는 제2노치; 및
상기 제2방향 주름부의 연장 방향과 수직한 방향으로 형성되는 일자홈을 포함하는,
극저온 유체 저장탱크의 금속 멤브레인.a first-direction wrinkle portion protruding upward on the metal sheet and extending in one direction; and
It protrudes upward on the metal sheet and includes a second direction wrinkle portion extending in a direction orthogonal to the first direction wrinkle portion,
The second direction wrinkle portion,
a raised portion having a higher height and a narrower width at a portion crossing the first direction wrinkle portion;
a second notch formed along a line in which the width of the wrinkle portion in the second direction is narrowed on an inclined surface near the raised portion; and
Containing a straight groove formed in a direction perpendicular to the extending direction of the second direction wrinkle portion,
Metal membranes in cryogenic fluid storage tanks. 청구항 1에 있어서,
상기 일자홈은 상기 제2방향 주름부의 폭방향 중심에 형성되는 것을 특징으로 하는,
극저온 유체 저장탱크의 금속 멤브레인.The method according to claim 1,
The straight groove is characterized in that it is formed in the center of the width direction of the wrinkle part in the second direction,
Metal membranes in cryogenic fluid storage tanks. 청구항 2에 있어서,
상기 제2방향 주름부는,
상기 제1방향 주름부와 교차하는 부위에서 하방으로 함몰된 형태로 형성되는 제3노치를 더 포함하고,
상기 제3노치는 상기 제2노치와 인접하게 형성되되 상기 제2방향 주름부의 길이방향을 따른 중심선을 기준으로 대향되는 위치에 각각 형성되는 것을 특징으로 하는,
극저온 유체 저장탱크의 금속 멤브레인.3. The method according to claim 2,
The second direction wrinkle portion,
It further comprises a third notch formed in a downwardly recessed form at a site intersecting the first direction wrinkle portion,
The third notch is formed adjacent to the second notch, characterized in that each formed at positions opposite to the center line along the longitudinal direction of the second direction wrinkle portion,
Metal membranes in cryogenic fluid storage tanks. 청구항 3에 있어서,
상기 일자홈은 상기 융기부를 기준으로 상기 제3노치의 바깥쪽 영역에 바로 인접하게 형성되는 것을 특징으로 하는,
극저온 유체 저장탱크의 금속 멤브레인.4. The method according to claim 3,
The straight groove is characterized in that it is formed immediately adjacent to the outer region of the third notch with respect to the raised portion,
Metal membranes in cryogenic fluid storage tanks. 청구항 4에 있어서,
상기 제1방향 주름부는,
상기 제2방향 주름부와 교차하는 부위에서 하방으로 함몰된 형태로 형성되는 제1노치를 포함하고,
상기 제1노치는 상기 제1방향 주름부의 길이방향을 따른 중심선을 기준으로 대향되는 위치에 각각 형성되는 것을 특징으로 하는,
극저온 유체 저장탱크의 금속 멤브레인.5. The method according to claim 4,
The first direction wrinkle portion,
and a first notch formed in a downwardly recessed form at a site intersecting the second direction wrinkle part,
The first notch is characterized in that each formed at positions opposite to the center line along the longitudinal direction of the first direction wrinkle portion,
Metal membranes in cryogenic fluid storage tanks. 청구항 1에 있어서,
상기 융기부는 상부면이 일(一)자의 직선 형태로 형성되는 것을 특징으로 하는,
극저온 유체 저장탱크의 금속 멤브레인.The method according to claim 1,
The raised portion is characterized in that the upper surface is formed in a straight line shape of one (一) character,
Metal membranes in cryogenic fluid storage tanks.
KR1020200187664A 2020-12-30 2020-12-30 Metal membrane of cryogenic fluid storage tank KR20220095790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020200187664A KR20220095790A (en) 2020-12-30 2020-12-30 Metal membrane of cryogenic fluid storage tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200187664A KR20220095790A (en) 2020-12-30 2020-12-30 Metal membrane of cryogenic fluid storage tank

Publications (1)

Publication Number Publication Date
KR20220095790A true KR20220095790A (en) 2022-07-07

Family

ID=82397956

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020200187664A KR20220095790A (en) 2020-12-30 2020-12-30 Metal membrane of cryogenic fluid storage tank

Country Status (1)

Country Link
KR (1) KR20220095790A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117803849A (en) * 2024-03-01 2024-04-02 中太(苏州)氢能源科技有限公司 Corrugated plate for corner regions with bulges and storage container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117803849A (en) * 2024-03-01 2024-04-02 中太(苏州)氢能源科技有限公司 Corrugated plate for corner regions with bulges and storage container

Similar Documents

Publication Publication Date Title
KR100964571B1 (en) Expandable metal membrane with orthogonally isotropic behavior
KR20220095790A (en) Metal membrane of cryogenic fluid storage tank
KR20120013229A (en) Device for fixing the primary barrier reinforcement member of lng storage tank
KR20100090416A (en) Corrugation membrane reinforcement structure of lng cargo
KR102233191B1 (en) Metal Membrane of Cryogenic Fluid Storage Tank
US3595430A (en) Containers for liquefied gases having corrigated wall structure
KR101225168B1 (en) Insulation structure of lng cargo tank and ship having the same
KR20150058645A (en) Cargo containment
KR102044272B1 (en) Metal membrane of low temperature fluid storage tank
KR102063710B1 (en) Membrane having corrugated portion for stress reduction and liquefied gas storage tank including the membrane
KR20150045189A (en) Membrane of cargo for liquefied gas
KR101988534B1 (en) Barrier structure of liquefied gas cargo tank and installation method thereof
KR20130119399A (en) Combination structure of reinforcing member for primary barrier of lng storage tank
KR20120084972A (en) Membrane panel for a liquid storage tank
KR102019272B1 (en) Membrane having corrugated portion for reinforcing strength and liquefied gas storage tank including the membrane
KR102020965B1 (en) Membrane connecting structure and liquefied gas storage tank including the structure
KR102490347B1 (en) Reinforcing member for corrugated membrane and lng storage tank having the reinforcing member
KR20160008907A (en) Lng storage tank and insulation pannel thereof
KR20180124481A (en) Cargo of liguefied natural gas and method for manufacturing thereof
KR20180107363A (en) Insulation wall for lng tank
KR102075975B1 (en) Insulation system of liquefied gas storage tank
KR102020969B1 (en) Insulation System For Liquefied Natural Gas Storage Tank
KR20120126601A (en) Insulation structure for a lng storage tank
KR101337633B1 (en) Fixing structure of reinforcing member for primary barrier of lng storage tank
KR20210152835A (en) Insulating system for liquefied gas storage tank including metal membrane with hemisphere-shaped corrugations

Legal Events

Date Code Title Description
A201 Request for examination