KR20170050596A - Dual Pressure Vessels Having Elastic Tube - Google Patents

Dual Pressure Vessels Having Elastic Tube Download PDF

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Publication number
KR20170050596A
KR20170050596A KR1020150152346A KR20150152346A KR20170050596A KR 20170050596 A KR20170050596 A KR 20170050596A KR 1020150152346 A KR1020150152346 A KR 1020150152346A KR 20150152346 A KR20150152346 A KR 20150152346A KR 20170050596 A KR20170050596 A KR 20170050596A
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KR
South Korea
Prior art keywords
elastic tube
tank
tub
space
inner tank
Prior art date
Application number
KR1020150152346A
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Korean (ko)
Inventor
이도영
Original Assignee
삼성중공업 주식회사
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Priority to KR1020150152346A priority Critical patent/KR20170050596A/en
Publication of KR20170050596A publication Critical patent/KR20170050596A/en

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    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J12/00—Pressure vessels in general
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • 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
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels 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
    • 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

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

Abstract

The inner tub is formed to be relatively larger than the inner tub, and the outer tub is surrounded by the outer tub, and the inner tub is spaced apart from the outer tub. And a plurality of elastic tubes inserted in the spaced apart spaces and selectively expanding and stably supporting the outer tubes and absorbing impact generated between the inner tub and the outer tub.

Description

(Dual Pressure Vessels Having Elastic Tube)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a double-layered container for storing contents, and more particularly, to a dual pressure vessel for inserting and expanding an elastic tube between an inner tank and an outer tank to remove a space between the inner tank and the outer tank.

Generally, the content means that the gas is cooled or compressed to become a liquid.

Here, the content includes not only a gas which becomes a liquid by compressing a gas at room temperature but also a compressed gas which is cooled to below a critical temperature and pressurized and liquefied.

A method for storing such contents is to lower the temperature of the storage gas to below the vaporization temperature and liquefy. At this time, the gasification temperature of the gas is determined by the pressure inside the vessel. It is common for containers to be operated with adequate internal pressure depending on the storage, transportation and use of the contents. Applying the internal pressure of such a vessel can reduce the operation of the cooling device required to lower the internal temperature by raising the vaporization temperature of the contents, resulting in energy savings.

However, in the case of cryogenic materials such as liquefied natural gas, the inner container must be used as a metal that can withstand extremely low temperatures, and the thickness of the inner container must be increased to withstand the internal pressure, .

Therefore, a method for solving such problems is required.

It is an object of the present invention to provide a method of manufacturing a container having a dual structure corresponding to the pressure of liquefied natural gas and to propose and propose a method of manufacturing a container having a double structure.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

The inner tub is formed to be relatively larger than the inner tub, and the outer tub is surrounded by the outer tub, and the inner tub is spaced apart from the outer tub. And at least one elastic tube located in the spacing space.

The plurality of elastic tubes may be spaced along the outer circumference of the inner tub.

Further, the elastic tube may be formed of an elastic material having a storage space therein, and may be inflated by injecting any one of liquid, solid, and gas into the storage space.

Further, the elastic tube can expand in the spaced space.

In addition, when the elastic tube is expanded in the spaced space, one surface of the elastic tube contacts the inner tank, and the other surface of the elastic tube touches the outer tank.

Further, when a plurality of the elastic tubes are positioned in the spacing space, the adjacent elastic tubes are in contact with each other.

And a heat insulating material formed on the spacing space to heat the inner tank and to block heat transmitted from the outside.

The heat insulating material may be coupled to either the outer side of the inner tank or the inner side of the outer tank.

The present invention provides a curvature-adjustable case having the following effects.

First, it is formed as a double structure, and the outer tank supports the pressure of the inner tank, thereby reducing the thickness of the inner tank.

Second, there is an advantage that an elastic tube is inserted between the inner tub and the outer tub to remove a space between the inner tub and the outer tub, thereby preventing an impact on the outer periphery due to plastic deformation of the inner tub.

Third, the elastic tube is inserted between the inner tank and the outer tank in a shrunk form so that it is possible to remove the space between the inner tank and the outer tank by filling liquid, solid, gas or the like easily available in the inner storage space.

Fourth, it is possible to reduce the material cost by reducing the thickness of the inner tank, and there is an advantage that the total weight can be reduced.

FIG. 1 is a view showing a direction in which a plastic deformation of an inner tank occurs in a double pressure vessel provided with an elastic tube according to an embodiment of the present invention; FIG.
FIG. 2 is a table comparing a conventional storage container and a double pressure container provided with an elastic tube according to an embodiment of the present invention; FIG.
3 is a view showing a state where an elastic tube is inserted in a double pressure vessel having an elastic tube according to an embodiment of the present invention;
FIG. 4 is a view showing a state in which a solid, a liquid, and a gas are injected into an elastic tube in a double pressure vessel having an elastic tube according to an embodiment of the present invention,
FIG. 5 is a view showing a heat insulating material formed in a double pressure vessel having an elastic tube according to an embodiment of the present invention; FIG.
FIG. 6 is a view showing a modified example of the elastic tube in the dual pressure vessel provided with the elastic tube according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the appended drawings illustrate the present invention in order to more easily explain the present invention, and the scope of the present invention is not limited thereto. You will know.

In describing the embodiments of the present invention, it is to be noted that elements having the same function are denoted by the same names and numerals, but are substantially not identical to elements of the prior art.

Also, the terms used in the present application are used only to describe certain embodiments and are not intended to limit the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

FIG. 1 is a view showing a dual pressure vessel having an elastic tube according to an embodiment of the present invention.

Referring to FIGS. 1 and 3, a dual pressure vessel having an elastic tube according to an embodiment of the present invention may include an inner tank 100, an outer tank 200, a heat insulating material 400, and an elastic tube 300 have.

The inner tank 100 is formed with an accommodation space for storing contents therein and can be plastically deformed outwardly.

Here, the inner tank 100 may have a cylindrical shape or a spherical shape. The material of the inner tank 100 may be a metal whose strength or brittleness is not weakened even at a low temperature lower than room temperature so that contents can be stored therein. Stainless steel, aluminum (Al), etc. may be applied because the metal can be determined according to the temperature of the contents of the inside, for example, the natural content (LNG) is stored at -163 ° C . Also, the inner tank 100 is plastically deformed by a critical pressure, which is the pressure of the inner tank 100, and is expanded in the outward direction.

Generally, plastic deformation means that a deformation caused by an external force is permanently deformed without returning to a state before external force even if an external force is removed. However, the external force applied to the present embodiment may include not only a physical force but also a case where a pressure due to heat is generated.

The outer tub 200 is relatively larger than the inner tub 100 and encloses the inner tub 100 from the outside and the inner space is spaced apart from the outer surface of the inner tub 100 to form a spacing space A.

The outer tank 200 serves to support the internal pressure of the inner tank 100, which is transmitted through the heat insulating material 400, which will be described later. The outer tank 200 may correspond to the shape of the inner tank 100 so as to evenly support the inner pressure of the inner tank 100.

Further, the material of the outer tub 200 may be a composite material reinforced with steel or glass fiber or carbon fiber excellent in strength and durability at room temperature in the metal.

Accordingly, it is not limited to the material as long as it can withstand the impact of the plastic deformation of the inner tank 100 and can support the inner tank 100, and thus the scope of the right is not limited.

A plurality of elastic tubes 300 according to an embodiment of the present invention are inserted into a space between the inner tub 100 and the outer tub 200 and a storage space B is formed therein to expand selectively, It is possible to prevent the outer tub 100 from being plastically deformed and impacting the outer tub 200.

Meanwhile, in the present embodiment, a plurality of elastic tubes 300 are inserted into the spacing space A in a cylindrical shape, and are selectively inflated to be stably supported and absorb shocks generated between the inner tub and outer tub. And at least one of liquid, solid and gas is injected into the storage space B inserted between the inner tank 100 and the outer tank 200 to form the inner tank 100 and the outer tank 200, 200 to remove the spacing space (A).

The elastic tube 300 is configured to restrict the movement of the inner tub 100 by adjusting the distance between the inner tub 100 and the outer tub 200 between the inner tub 100 and the outer tub 200, And the space between the inner tank 100 and the outer tank 200 is adjusted by injecting liquid, solid, gas or the like into the inner storage space B. The shape and material of the material are not limited as long as the material is elastic. to be.

Subsequently, the heat insulating material 400 is formed in the space between the inner tank 100 and the outer tank 200, so that the inner tank 100 can be kept warm and the heat transmitted from the outside can be blocked.

Here, the heat insulating material 400 is selectively bonded to one of the outer side of the inner tank 100 and the inner side of the outer tank 200, and may be formed of a polyurethane foam. The polyurethane foam can be foamed by mixing with a volatile solvent in the interior of the heat insulating material (400). In addition, the polyurethane foam can be manufactured in advance in a shape corresponding to the space between the inner tank 100 and the outer tank 200 and inserted into the space.

The method of joining the heat insulating material 400 to the inner tank 100 and the outer tank 200 will be described later in more detail with reference to FIG.

FIG. 2 is a table comparing a conventional storage container with a storage container according to an embodiment of the present invention at a temperature of -163 ° C. FIG. The thickness of the heat insulating material 400 of the conventional storage container is 180 mm and the thickness of the heat insulating material 400 of the storage container according to the present embodiment is 200 mm.

In the double pressure vessel provided with the elastic tube 300 according to the present embodiment, the thickness of the heat insulating material 400 is increased to deform the heat insulating material 400 in the outward direction of the inner tank 100 due to plastic deformation The thickness of the heat insulating material 400 can be substantially prevented from being reduced.

SUS304L, which is the material of the inner tank 100 shown in Fig. 2, is one of the above stainless steels, and SS400 and X80, which are materials of the outer tank 200, are one of common steels.

The inner tank (100) in which the material is determined according to the storage temperature of the contents has a limited room for material selection at the time of designing, but the outer tank (200) which is not affected by the temperature can be selected variously according to the design conditions.

When the design pressure of the storage container is 8 bar and the container diameter is 3 m, the conventional storage container as shown in FIG. 2 should have a thickness of the inner tank 100 of 9 mm or more. However, the thickness of the inner tank 100 applied to the storage container according to the present embodiment is 1.0 to 1.2 mm, which is significantly thinner than the thickness of the inner tank 100 of the conventional storage container.

Also, the thickness of the inner tank 100 of the conventional container was 9.04 mm and the thickness of the outer tank 200 was 4 mm, which was thicker than the thickness of the outer tank 200. However, the thickness of the inner tank 100 applied to the storage container according to the present embodiment is 1.2 mm, the thickness of the outer tank 200 is 5.44 mm, and the thickness of the inner tank 100 is significantly smaller than the thickness of the outer tank 200 . On the other hand, the storage container according to the embodiment of the present invention is advantageous in that the overall weight is light and the material cost is less than that of the conventional container.

Further, the storage vessel according to one embodiment of the present invention is characterized in that when the pressure is increased from 8 bar to 12 bar or the vessel diameter is increased from 3 m to 10 m, the thickness of the inner vessel 100 of the conventional vessel is increased Otherwise, the thickness of the inner tank 100 does not change. Accordingly, as the storage container according to an embodiment of the present invention is enlarged or the internal pressure is increased, the material cost is reduced.

2, the thickness according to the pressure between the conventional storage container and the present invention has been described. Subsequently, the elastic tube 300 inserted between the inner tub 100 and the outer tub 200 through FIGS. 3 and 4 ) Will be described in more detail.

3 and 4 are perspective views showing an elastic tube 300 (see FIG. 3) which is inserted and expanded between the inner tub 100 and the outer tub 200 in a double pressure container provided with the elastic tube 300 according to an embodiment of the present invention, Fig.

A plurality of elastic tubes 300 are inserted in a space between the inner tank 100 and the outer tank 200 and a storage space B is formed therein to expand selectively to limit the movement of the inner tank 100, Restraint to prevent deformation.

The double pressure vessel having the elastic tube 300 according to the present invention is coupled with the outer tank 200 in such a manner that the outer tank 200 is formed and the inner tank 100 is inserted. The spacing A is reduced between the inner tub 100 and the outer tub 200 so that the plastic tubing is restrained to prevent the inner tub 100 from being damaged.

However, since it is impossible to connect the inner tub 100 and the outer tub 200 without the space A, the inner tub 100 is inserted safely and the elastic tube 300 is inserted into the space A generated at this time .

The elastic tube 300 is configured to minimize the distance between the inner tub 100 and the outer tub 200. After the inner tub 100 is inserted into the outer tub 200, So that any one of solid and gas such as liquid and powder such as water or oil is injected into the storage space B to expand it.

A plurality of the elastic tubes 300 may be spaced apart from each other in the space between the inner tank 100 and the outer tank 200 to fill the space A between the inner tank 100 and the outer tank 200.

One side of the elastic tube 300 contacts the inner tub 100 when the elastic tube 300 is expanded in the spacing space A and the other side of the elastic tube 300 is connected to the outer tub 200 .

In addition, although not shown in the drawings, when a plurality of the elastic tubes 300 are located in the spacing space A, the elastic tubes 300 may abut against each other.

The elastic tube 300 may be inserted between the inner tank 100 and the heat insulating material 400 or between the outer tank 200 and the heat insulating material 400 to remove the spacing space A. [

The present invention relates to a method of manufacturing a double pressure vessel provided with an elastic tube 300 according to an embodiment of the present invention. More specifically, the present invention relates to a method of manufacturing a double pressure vessel including an elastic tube 300 for supporting the pressure of contents contained in the inner vessel 100 The elastic tube 300 is attached to the inner tub 100 in order to reduce the tolerance generated when the inner tub 100 is inserted into the inner tub 200. In this case, And the outer tub 200, as shown in Fig. At this time, a plurality of elastic tubes 300 are spaced apart from each other by a predetermined distance and are inserted in a contraction shape along the periphery of the inner tub 100. After the elastic tubes 300 are inserted into the elastic tube 300, And the solid is injected and inflated to remove the spacing space A between the inner bath 100 and the outer bath 200. In the space A, the elastic tube 300 is filled and the remaining space is filled with a powdery heat insulating material 400 such as perlite or left as an empty space, and the end plate portion of the outer tub 200 is welded and finished .

The elastic tube 300 has a structure in which a plurality of elastic tubes 300 are inserted between the inner tub 100 and the outer tub 200 to remove the spacing A between the inner tub 100 and the outer tub 200, Is not limited and may be formed between the inner tank 100 and the outer tank 200 with additional structure between the inner tank 100 and the outer tank 200 and thus the scope of the right is not limited Of course.

In the present embodiment, a heat insulating material 400 is additionally formed in the coupling between the inner tank 100 and the outer tank 200. The thermal insulating material 400 will be described with reference to FIG.

FIG. 5 is a view of a heat insulating material 400 in a double pressure vessel provided with an elastic tube 300 according to an embodiment of the present invention.

A plurality of elastic tubes 300 are inserted between the outer circumference of the heat insulating material 400 and the inner side of the outer tub 200. As shown in FIG.

According to an embodiment of the present invention, the heat insulating material 400 is coupled to the inner side of the outer tank 200 to keep the inner tank 100 containing the contents warm and prevent heat from being transmitted from the outside. However, the heat insulating material 400 may be formed along the outer periphery of the inner tank 100 as well as the outer tank 200.

The heat insulating material 400 is installed in a space between the inner tank 100 and the outer tank 200 and transfers the inner pressure of the inner tank 100 to the outer tank 200. And may be manufactured in advance in a shape corresponding to the space between the inner tank 100 and the outer tank 200 and inserted into the space.

Accordingly, the heat insulating material 400 may be provided by combining two or more polyurethane foams so as not to be damaged by deformation due to internal pressure.

The elastic tube 300 is inserted between the heat insulating material 400 formed on the outer periphery of the inner tank 100 and the outer tank 200 to specifically separate the thermal insulating material 400 from the inner tank 100 and the outer tank 200 And the elastic tube 300 is inserted into the outer periphery of the heat insulating material 400 so that the heat insulating material 400 can be inserted into the inner tube 100. Accordingly, And the outer tub 200, as shown in FIG.

Specifically, the inner tank 100 containing the contents has a cryogenic temperature, and the inner tank 100 is plastically deformed by the pressure depending on the temperature. Therefore, when the heat insulating material 400 for keeping the inner tank 100 is formed along the outer circumference of the inner tank 100, the temperature difference of the contents can be reduced and consequently the inner pressure can be supported.

Therefore, the thickness of the inner tank 100 is also reduced as compared with the prior art, so that plastic deformation can be prevented in the outward direction when the container according to the present embodiment is manufactured, and brittle fracture can be prevented.

6 illustrates a modified example of the elastic tube 300 formed between the inner tub 100 and the outer tub 200 in the double pressure container provided with the elastic tube 300 of the present invention.

The elastic tube 300 may be inserted between the inner tub 100 and the outer tub 200 to expand the space between the inner tub 100 and the outer tub 200. [

In one embodiment of the present invention, a plurality of elastic tubes 300 are inserted into the space between the inner tub 100 and the outer tub 200, and the space between the elastic tubes 300 is set as a void space or a heat insulating material 400 such as pearlite ).

However, in the modification, the elastic tube 300 may be integrally inserted so as to eliminate the void space between the inner tub 100 and the outer tub 200. [

Specifically, the elastic tube 300 is inserted between the inner tank 100 and the outer tank 200 to insert the inner tank 100 into the storage space B of the elastic tube 300 by inserting gas, liquid, And the outer tub 200, as shown in FIG.

The detailed description will be made with reference to the drawings.

The elastic tube 300 is inserted along the outer periphery of the inner tub 100 and the heat insulator 400 is formed around the inner periphery of the outer tub 200. [ Here, the elastic tube 300 is formed in a cylindrical shape having a space therein and having an inner tub 100 in the space and surrounding the inner tub 100.

The manufacturing process of the double pressure vessel provided with the elastic tube 300 according to the present invention includes the steps of inserting the inner tank 100 into the outer tank 200 in which the thermal insulating material 400 is formed and moving the inner tank 100 between the inner tank 100 and the outer tank 200 The space A between the inner tank 100 and the outer tank 200 can be removed by inserting the elastic tube 300 in a contracted shape in the space of the inner tank 100 and filling the space with the gas, liquid, solid or the like.

As a result, in order to prevent plastic deformation due to the contents contained in the inner tub 100, the inner tub 100 having the elastic tube 300 according to the present invention is provided. This is an invention for preventing plastic deformation.

The inner tank 100 is made of a dual structure of the inner tank 100 and the outer tank 200. The inner tank 100 is made thin and the outer tank 200 is made of a strong material and the thermal insulating material 400 is inserted, Liquid, solid or the like is injected into the inner storage space B by inserting the elastic tube 300 into the inner storage space B so that the space between the inner tank 100 and the outer tank 200 can be maintained This eliminates the impact on the outer tank due to the plastic deformation, and can be effective in reducing the material cost and reducing the overall weight.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: inner tub 200: outer tub
300: elastic tube 400: insulation

Claims (8)

An inner tub which is formed with a receiving space for storing contents therein and is plastic-deformed in an outward direction;
An outer tub formed to be relatively larger than the inner tub to enclose the inner tub from the outside and the inner side to be spaced from the outer side of the inner tub to form a spacing space; And
At least one elastic tube located in the spacing space; Lt; / RTI >
The method according to claim 1,
The elastic tube may include:
A plurality of pressure vessels spaced along the outer circumference of the inner tank, The method according to claim 1,
The elastic tube may include:
Having a storage space therein,
Wherein one of liquid, solid, and gas is injected into the storage space and expanded. The method according to claim 1,
Wherein the elastic tube is expanded in the spaced space. 5. The method of claim 4,
When the elastic tube is expanded in the spacing space,
One surface of the elastic tube contacts the inner tub,
And the other surface of the elastic tube touches the outer tank. 5. The method of claim 4,
When a plurality of the elastic tubes are located in the spacing space,
A double pressure vessel in contact with adjacent elastic tubes. The method according to claim 1,
And a heat insulating material located in the spacing space to heat the inner tank and to block heat transmitted from the outside. 8. The method of claim 7,
The heat insulating material,
Wherein the pressure vessel is coupled to either the outside of the inner tank or the inside of the outer tank.
KR1020150152346A 2015-10-30 2015-10-30 Dual Pressure Vessels Having Elastic Tube KR20170050596A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101895756B1 (en) * 2018-05-16 2018-09-05 국방과학연구소 Apparatus for prevention of water penetration into insulation rubber of pressure vessel
KR102245348B1 (en) * 2019-11-29 2021-04-28 한국과학기술원 Vacuum Insulation Apparatus For Fluid Tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101895756B1 (en) * 2018-05-16 2018-09-05 국방과학연구소 Apparatus for prevention of water penetration into insulation rubber of pressure vessel
KR102245348B1 (en) * 2019-11-29 2021-04-28 한국과학기술원 Vacuum Insulation Apparatus For Fluid Tank

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