KR20130000985A - Spacer in the interval of storage tank has a vacuum insulation - Google Patents

Spacer in the interval of storage tank has a vacuum insulation Download PDF

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Publication number
KR20130000985A
KR20130000985A KR1020110061820A KR20110061820A KR20130000985A KR 20130000985 A KR20130000985 A KR 20130000985A KR 1020110061820 A KR1020110061820 A KR 1020110061820A KR 20110061820 A KR20110061820 A KR 20110061820A KR 20130000985 A KR20130000985 A KR 20130000985A
Authority
KR
South Korea
Prior art keywords
tank
spacer
storage tank
holder
support parts
Prior art date
Application number
KR1020110061820A
Other languages
Korean (ko)
Inventor
김도현
이명섭
권오석
Original Assignee
현대중공업 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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020110061820A priority Critical patent/KR20130000985A/en
Publication of KR20130000985A publication Critical patent/KR20130000985A/en

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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
    • F17C13/08—Mounting arrangements for 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0149—Vessel mounted inside another one
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PURPOSE: A spacer for a vacuum adiabatic storage tank is provided to minimize the amount of loss and to improve the storage efficiency of LNG by minimizing external heat transfer due to the material characteristics. CONSTITUTION: A spacer for a vacuum adiabatic storage tank(18a,18b,18c) comprises first and second horizontal support parts(20a,22a,20b,22b), vertical support parts(24,26), and first to third spacer members(28,30,32). The first and second horizontal support parts and the vertical support parts are protruded from the exterior of an inner tank part(12) and the interior of an outer tank part and are adjacently arranged to be overlapped to each other. The first to third spacer members are supported and fixed between the first and second horizontal support parts and the vertical support parts. In order to make a side bent portion of the first spacer member support on the interior of the outer tank part, a support part(34) is protruded from the interior of the outer tank part.

Description

Spacer in the Interval of Storage Tank Has a Vacuum Insulation

The present invention relates to a spacer of a vacuum insulated storage tank, and more particularly, to a new type of spacer disposed in a vacuum insulated layer, whereby the spacer is formed due to the rotation and flow of the tank part due to shrinkage expansion. It is to prevent the breakage, and to facilitate the installation work with the minimized heat transfer.

Generally, liquefied gas is transported in gaseous state through onshore or offshore gas piping, or stored and transported in liquefied gas (hereinafter referred to as "LNG") using a storage tank. When such LNG is cooled to cryogenic temperatures (approximately -163 degrees Celsius), its volume is reduced to about 1/600 as compared to when it is in a gaseous state, thereby increasing efficiency for long-distance transport or storage by sea.

Therefore, in order to safely and efficiently store LNG, a storage tank having a high thermal insulation property with sufficient rigidity against cryogenic temperatures should be selected. Generally, a vacuum insulation storage tank mainly composed of a structure in which a vacuum insulation layer is formed between an inner tank and an outer tank tank is mainly used. It is selected.

Looking at the configuration of the vacuum insulated storage tank, first, the inner tank tank for directly holding LNG, the outer tank tank for vacuum insulation in a structure that surrounds all the inner tank tank, and the vacuum formed between the inner tank and outer tank tank It is configured to include a heat insulating layer and a spacer to be disposed in the vacuum heat insulating layer in a state located on both sides and the upper surface of the inner tank tank, respectively, and fixedly connected between the inner tank and the outer tank tank.

Introducing the function of the spacer, the spacer maintains a vacuum insulation layer, and a rigid fixed connection between the inner tank and the outer tank tank is made to suppress the rotation and flow of the inner tank tank due to shrinkage expansion. Exert.

By the way, the spacer is generally made of a bolt, and when the spacer is connected between the inner tank and the outer tank tank portion by taking a fastening structure it is possible to secure a secure fixing force. However, if, for example, excessively contracting and expanding the inner tank tank according to the temperature change and the stress formed thereby is concentrated on the gap holder, as described above, the spacer is fastened to the tank and the outer tank tank. Because of this, there is a structural disadvantage that can not cope with fluidity for excessive stress concentration.

That is, when excessive stress is concentrated in the spacer, breakage or cracking of the spacer occurs and the function of the spacer is lost. As a result, the vacuum insulation layer is lost, as well as the connection between the inner tank and the outer tank. It also loses the ability to store LNG safely and reliably.

In addition, in order to fasten the spacer of the vacuum insulated storage tank as described above, accurate and precise workability is required, and also hassle that has to be tightened one by one, causing work efficiency and productivity to decrease.

In addition, the conventional spacer is usually made of a metal material to ensure a strong holding force and fixing force, the external heat is transferred to the LNG in the liquefied state through the spacer. Accordingly, when the LNG is seriously evaporated, there is a problem that a large amount of loss is generated by inevitably discharging the vaporized gas to prevent the explosion of the storage tank.

Accordingly, the present invention is to solve the conventional problems as described above, an object of the present invention is to prevent the gap retainer from being damaged due to the concentrated stress during the rotation and flow of the tank portion caused by the expansion and contraction, and In addition, the object of the present invention is to provide a space holder of the vacuum insulated storage tank, which minimizes heat transfer and facilitates installation work.

The solution means of the present invention for achieving the above object is a gap holder disposed in the vacuum insulating layer between the inner tank tank portion of the storage tank for storing the fluid and the outer tank tank surrounding the inner tank tank, the gap holder Are outer and upper surfaces on both sides of a plurality of inner tank parts, first and second horizontal supports, vertical support parts disposed adjacent to each other and protruding from the inner surface of the outer tank part, respectively, the first and second horizontal support parts, It is a gap holder of the vacuum insulated storage tank comprising a; first to third gap holders are respectively supported fixed between the vertical support.

Further, it is preferable that the first gap holder is arranged in a "" "shape, the second gap holder is arranged in a"-"shape, and the third gap holder is arranged in a" | "shape.

In addition, it is preferable that the supporting portion protrudes from the inner surface of the outer tank portion facing the outer side so that the side curved portion of the first spacer can be supported on the inner surface of the outer tank portion.

In addition, the first to third interval holder is preferably made of any one of glass fiber reinforced plastics (FRP) or wood (wood).

As described above, the present invention has the effect of reducing the stress concentrated on the spacer by sliding and expansion of the inner tank tank, thereby minimizing the stress concentrated on the spacer and of minimizing external heat transfer due to material properties. This effect can be expected to improve the efficiency and minimize the loss of LNG storage.

In addition, when the space holder of the vacuum insulated storage tank is used, the installation may be performed only by the structure that is simply held in close contact with the inner tank tank or the outer tank tank, thereby eliminating the inconvenience of the installation.

1 is a cross-sectional view of an essential part schematically showing a spacer of a vacuum insulated storage tank according to the present invention.
FIG. 2 is a left side view schematically showing FIG. 1. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of an essential part schematically showing a spacer of a vacuum insulated storage tank according to the present invention.

According to one embodiment of the invention, the vacuum insulated storage tank 10, as described in the background art, the inner tank tank portion 12 that directly holds the LNG (G), and the inner tank tank portion 12 to surround all Spacer tank portion 14 for taking vacuum insulation into the structure, and the space holder 18a, 18b, 18c disposed between the inner tank and the outer tank portion 12, 14 so that the vacuum insulation layer 16 can be maintained. It is configured to include).

The spacers 18a, 18b, and 18c according to the present invention are each provided with protrusions on both outer surfaces and upper outer surfaces of both sides of the inner tank tank 12, and on the inner surface of the corresponding outer tank tank 14, respectively. First and second horizontal supports 20a and 22a, 20b and 22b, vertical supports 24 and 26, and the first and second horizontal supports 20a and 22a, 20b and 22b and vertical supports It comprises a first to third interval holder 28, 30, 32 is fixed in a state disposed between the 24, 26.

Specifically, the first and second horizontal support portions 20a and 22a and 20b and 22b are disposed adjacent to each other so that one side horizontal surface may face each other, and the first and second horizontal support portions 20a and 22a may face each other. First and second spacing holders 28 and 30 are disposed between the horizontal surfaces of the 20b and 22b, respectively. At this time, the first and second spacing holders 28 and 30 are fixed by surface contact by the pressing force of the first and second horizontal support portions 20a and 22a and 20b and 22b.

As shown in the figure, the first gap holder 28 is arranged in a "" shape, and the second gap holder 30 is arranged in a "-" shape. In particular, the side curved portion of the first spacing holder 28 is projected on the surface corresponding to it so that it can be supported on the inner surface of the outer tank tank 14, the first spacing through the support 34 Since one side of the holder 28 is supported, severe flow of the inner tank tank 12 in the left and right directions can be suppressed.

Meanwhile, the vertical supports 24 and 26 are disposed adjacent to each other so that one vertical surface may face each other, and the third spacer 32 is disposed between the vertical surfaces of the vertical supports 24 and 26.

At this time, the third spacing holder 32 is fixed by the adhesion by the pressing of the vertical support portion 24, 26, the third spacing holder 32 is arranged a straight structure of the "" | "type.

The first to third spacing holders 28, 30, and 32 are made of any one of glass fiber reinforced plastics (FRP) or wood, which are hard to transmit heat and have good slipping. Is done. However, the material of the first to third spacing holders 28, 30, 32 need not be limited to or limited to the aforementioned materials. Any material can be used as long as there is little heat transfer, low coefficient of friction and strong support for the load.

Therefore, when using the spacer 18a, 18b, 18c of the vacuum insulated storage tank according to the present invention as described above, in the present invention, unlike the spacer holding the fastening structure as in the prior art, the spacer 18a , 18b, 18c) has a surface close support structure, there is no hassle according to the fastening operation as in the prior art. As a result, the work efficiency is improved, and the convenience of the work can be provided.

In addition, when rotation or left and right flow occurs with respect to the center (0) due to the contraction and expansion of the inner tank tank 12 in response to the temperature change, the stress formed by the first to third interval holder ( 28, 30, 32, wherein the first to the third interval holder 28, 30, 32 and the inner tank tank portion 12 is made to slip, thereby the first to third intervals By eliminating the stress concentrated in the holders 28, 30 and 32, the occurrence of breakage or cracking which occurred in the conventional spacer holder taking the fastening structure is prevented. As a result, the LNG (G) can be stably and safely stored.

In particular, as shown through the left side view shown in FIG. 2, the first and second spacing holders 28 and 30 are installed on both sides of the inner tank tank part 12 horizontally spaced apart from each other. By taking the plural structures in which the first and second horizontal support portions 20a, 22a, 20b, 22b are arranged, the inner tank part for the direction in which a cylinder such as an arrow rolls with respect to the center (0) ( The rotational support of O) can be performed more stably.

In addition, the first to third spacing holder (28, 30, 32) according to the present invention has a very low heat transfer rate due to the material properties to minimize the phenomenon that the LNG (G) in the liquefied state can be minimized, LNG In addition to improving the efficiency of the storage of (G), it is possible to minimize the loss.

While the present invention has been described for the embodiments of the present invention based on the accompanying drawings for convenience, various modifications and variations are possible without departing from the scope of the technical idea of the present invention, and such variations and modifications are claimed in the present invention. Inclusion in the scope is obvious.

10: storage tank LNG: G
12: inner tank part 14: outer tank part
16: vacuum insulation layer 18a, 18b, 18c: spacer
20a, 22a: first horizontal support 20b, 22b: second horizontal support
24, 26: vertical support portion 28: the first interval holder
30: second gap holder 32: third gap holder
34: support

Claims (4)

The spacers 18a, 18b disposed in the vacuum heat insulating layer 16 between the inner tank 12 of the storage tank 10 for storing the fluid and the outer tank 14 covering the inner tank 12; 18c),
The space holders 18a, 18b, and 18c are adjacent to each other on both outer and upper surfaces of the plurality of inner tank tanks 12 and on the inner surface of the outer tank tank 14, and are arranged next to each other in a structure overlapping each other. Second horizontal supports 20a, 22b, 20b, 22b, vertical supports 24, 26, and first and second horizontal supports 20a, 22b, 20b, 22b, vertical supports 24, 26) the first to the third interval holders (28, 30, 32) which are respectively supported and fixed between the gap holder of the vacuum insulated storage tank, characterized in that it comprises a.
The method according to claim 1,
The first spacing holder 28 is arranged in the form of "", the second spacing tool 30 is arranged in the form of "-", and the third spacing tool 32 is in the form of "|". Spacer holder of the vacuum insulated storage tank, characterized in that disposed.
The method of claim 2,
The support 34 is protruded on the inner surface of the outer tank portion 14 to face the side curved portion of the first spacing holder 28 so as to be supported on the inner surface of the outer tank portion 14. Spacer of vacuum insulated storage tank.
4. The method according to any one of claims 1 to 3,
The first to third gap holders 28, 30, 32 are vacuum insulated storage tanks, characterized in that made of any one of glass fiber reinforced plastics (FRP) or wood (wood). Gap maintainer.
KR1020110061820A 2011-06-24 2011-06-24 Spacer in the interval of storage tank has a vacuum insulation KR20130000985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110061820A KR20130000985A (en) 2011-06-24 2011-06-24 Spacer in the interval of storage tank has a vacuum insulation

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Application Number Priority Date Filing Date Title
KR1020110061820A KR20130000985A (en) 2011-06-24 2011-06-24 Spacer in the interval of storage tank has a vacuum insulation

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105314294A (en) * 2014-06-13 2016-02-10 南通中集罐式储运设备制造有限公司 Low-temperature container, low-temperature tank box and low-temperature tank car
JPWO2017138044A1 (en) * 2016-02-12 2018-11-01 川崎重工業株式会社 Marine double shell tank
JP2019038601A (en) * 2017-08-28 2019-03-14 トヨタ自動車株式会社 Vacuum insulating container
CN112066250A (en) * 2020-08-07 2020-12-11 北京航天试验技术研究所 Fixed inner support based on concentric sleeve cone and low-temperature container with same
CN114909601A (en) * 2022-05-30 2022-08-16 江南造船(集团)有限责任公司 Liquid storage tank and ship

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105314294A (en) * 2014-06-13 2016-02-10 南通中集罐式储运设备制造有限公司 Low-temperature container, low-temperature tank box and low-temperature tank car
JPWO2017138044A1 (en) * 2016-02-12 2018-11-01 川崎重工業株式会社 Marine double shell tank
JP2019038601A (en) * 2017-08-28 2019-03-14 トヨタ自動車株式会社 Vacuum insulating container
CN112066250A (en) * 2020-08-07 2020-12-11 北京航天试验技术研究所 Fixed inner support based on concentric sleeve cone and low-temperature container with same
CN114909601A (en) * 2022-05-30 2022-08-16 江南造船(集团)有限责任公司 Liquid storage tank and ship

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