Insulating material transfer system and insulating material transfer method

Abstract

The present invention relates to an insulating material transfer system, and to an insulating material transfer system for transferring an insulating material into an insulating space of a liquefied gas storage tank, the system comprising: a horizontal insulating material transfer device for horizontally transferring the insulating material; a vertical insulating material transfer device for vertically transferring the insulating material according to the height of the liquefied gas storage tank; and a vacuum pump for vacuumizing at least a part of the insulating material transfer system.

Description

Insulation material transfer system and insulation material transfer method

[0001] Cross-citation with related applications

[0002] The present application claims the benefit of priority based on Korean Patent Application No. 10-2024-0175808 dated November 29, 2024, Korean Patent Application No. 10-2025-0054454 dated April 25, 2025, Korean Patent Application No. 10-2025-0054455 dated April 25, 2025, and Korean Patent Application No. 10-2025-0054456 dated April 25, 2025, and all contents disclosed in the documents of said Korean patent applications are incorporated herein as part of the specification.

[0003] Technology field

[0004] The present invention relates to an insulation material transfer system and an insulation material transfer method for transferring an insulation material to an insulation space of a liquefied gas storage tank, and more specifically, to an insulation material transfer system and an insulation material transfer method for transferring an insulation material in a vacuum state to an insulation space of a liquefied gas storage tank that stores, for example, a liquefied gas such as liquid hydrogen.

[0005] Hydrogen is one of the most highly anticipated energy sources in the upcoming era of eco-friendly energy. In addition to its eco-friendly nature, hydrogen offers a wider range of applications than conventional batteries, and the government and companies have long-term plans to increase hydrogen self-sufficiency and production rates.

[0006] Accordingly, the storage and transportation of hydrogen must be smooth, but gaseous hydrogen has the disadvantage of requiring high-pressure facilities and having a small transport capacity.

[0007] To achieve this, liquefying gas reduces its volume, making storage and transportation easier. Gas in this state is called liquefied gas. For example, among liquefied gases, LNG has a liquefaction temperature of -163 degrees Celsius at atmospheric pressure, so the internal temperature of the storage tank must be maintained at an ultra-low temperature to store and transport it. In particular, since hydrogen has an even lower liquefaction temperature of -253 degrees Celsius than LNG, the internal temperature of the storage tank must be maintained at an ultra-low temperature even lower than that of LNG.

[0008] If the insulation of a liquefied gas (LNG) storage tank is insufficient, resulting in high thermal conductivity, the gas may vaporize, generating excessive Boil-off Gas (BOG). The generation of excessive BOG reduces the remaining amount of transported LNG, and high-pressure BOG can affect the safety of the storage tank. Therefore, while excess BOG remaining after fuel use is sometimes re-liquefied or leaked into the air, LNG carriers may require high-performance insulation systems capable of maintaining the internal temperature of the storage tank at cryogenic levels to minimize these risks.

[0009] Currently, various insulation structures are being applied to liquefied hydrogen storage tanks. For example, multi-layer insulation (MLI), spray-on-foam insulation (SOFI), vapor-cooled shield (VCS), and insulation-filling methods are being utilized.

[0010] Among these methods, the insulation filling method enhances insulation performance by filling the insulation space, which surrounds the liquid hydrogen storage area of ​​a liquid hydrogen storage tank, with powdered or bead-shaped insulation material and then creating a vacuum within the space. However, creating a vacuum within an insulation space filled with insulation material is a very difficult and time-consuming task. This is particularly true when using HGMs (hollow glass microspheres) tens of micrometers in size as insulation, and there has been a problem in that this vacuum formation process takes a very long time, ranging from several weeks to several months.

[0011] The present invention aims to provide an insulation material transfer system and an insulation material transfer method for transferring a vacuum insulation material into an insulation space of a liquefied gas storage tank.

[0012] In addition, the present invention aims to provide a horizontal insulation material conveying device capable of horizontally conveying the insulation material while simultaneously removing small particle powder from the insulation material.

[0013] In addition, the present invention aims to provide a vertical insulation material conveying device capable of vertically conveying insulation material.

[0014] The insulation material conveying system of the present invention, for conveying an insulation material into an insulation space of a liquefied gas storage tank, may include: an insulation material horizontal conveying device for conveying the insulation material horizontally; an insulation material vertical conveying device for conveying the insulation material vertically according to the height of the liquefied gas storage tank; and a vacuum pump for vacuuming at least a part of the insulation material conveying system.

[0015] In one example, the insulation material horizontal conveying device or the insulation material vertical conveying device may include a small particle powder removal unit for removing small particle powder from the insulation material.

[0016] In one example, it may further include a small particle powder receiving section provided below the insulation material horizontal conveying device or the insulation material vertical conveying device, for receiving small particle powder removed from the small particle powder removal section.

[0017] In one example, the vertical insulation conveyor can be positioned at the rear end of the horizontal insulation conveyor.

[0018] In one example, the device further includes an intermediate receiving section provided between the insulation material horizontal conveying device and the insulation material vertical conveying device, which receives the insulation material that has passed through the insulation material horizontal conveying device, and the insulation material received in the intermediate receiving section can be supplied to the lower part of the insulation material vertical conveying device.

[0019] In one example, the vertical insulation conveying device may be extended above the liquefied gas storage tank.

[0020] In one example, the system may further include a gravity transfer device that connects the insulation material vertical transfer device and the liquefied gas storage tank, and transfers the insulation material passing through the insulation material vertical transfer device into the insulation space of the liquefied gas storage tank by gravity.

[0021] In one example, the device further includes a container containing a portion of the insulation material horizontal conveying device and a portion of the insulation material vertical conveying device, and another portion of the insulation material vertical conveying device may extend upward from the container.

[0022] The insulation material transfer method of the present invention, in a method for receiving an insulation material and transferring it into an insulation space of a liquefied gas storage tank, comprises: a horizontal transfer step for transferring the insulation material horizontally; and a vertical transfer step for transferring the insulation material vertically, wherein the horizontal transfer step and the vertical transfer step may be maintained in a vacuum state.

[0023] In one example, a small particle powder removal step for removing small particle powder from the insulation material may be further included.

[0024] In one example, the horizontal conveying step and the small particle powder removal step, and / or the vertical conveying step and the small particle powder removal step may proceed simultaneously.

[0025] The insulation material conveying system and insulation material conveying method of the present invention can convey a vacuum-state insulation material to the insulation space of a storage tank through an insulation material horizontal conveying device and an insulation material vertical conveying device operated in a vacuum state.

[0026] In addition, the insulation material horizontal conveying device of the present invention is equipped with a body part, a conveying part, and a small particle powder removal part, so that it can horizontally convey the insulation material and simultaneously remove small particle powder from the insulation material.

[0027] In addition, the vertical insulation material conveying device of the present invention can vertically convey insulation material while minimizing damage to the insulation material by applying a bucket conveyor and a screw together, thereby solving the problem of uneven center of gravity.

[0028] Figure 1 is a drawing showing the insulation material conveying system of the present invention.

[0029] Figure 2 is a diagram showing the insulation material transfer system of the present invention connected to a liquefied gas storage tank.

[0030] Figure 3 is a drawing showing the horizontal transfer device for thermal insulation material of the present invention.

[0031] Figure 4 is a cross-sectional view of the vertical insulation material conveying device of the present invention.

[0032] FIG. 5 is a cross-sectional view of the bucket conveyor of the insulation material vertical conveying device of the present invention.

[0033] Figure 6 is a diagram showing the conveying process of the vertical insulation material conveying device of the present invention.

[0034] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0035] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Where it is stated that a component is "connected," "combined," or "joined" to another component, it should be understood that the component may be directly connected or joined to the other component, but that another component may also be "connected," "combined," or "joined" between each component.

[0036] In this specification, the front-back, left-right, and up-down directions are referred to for convenience of explanation and may be directions orthogonal to one another. However, these directions are determined relatively, and the term "up-down direction" does not necessarily mean a vertical direction.

[0037]

[0038] <Insulation material transport system (1) and insulation material transport method>

[0039] Referring to FIGS. 1 and 2, the insulation material transfer system (1) of the present invention, for transferring insulation material into an insulation space of a liquefied gas storage tank (10), may include: an insulation material horizontal transfer device (100) for transferring insulation material horizontally; an insulation material vertical transfer device (200) for transferring insulation material vertically according to the height of the liquefied gas storage tank (10); and a vacuum pump (300) for vacuuming at least a part of the insulation material transfer system (1).

[0040] A liquefied gas storage tank (10) may include an insulating space to minimize heat intrusion from the outside. Insulating material may be filled inside the insulating space, and the inside of the insulating space may be formed into a vacuum to improve insulation performance. At this time, vacuum does not mean only a complete vacuum, but can be understood as a very low pressure close to a vacuum. In the following, vacuum can be understood in the same way.

[0041] As described in the prior art, creating a vacuum in the insulation space of a liquefied gas storage tank (10) while the insulation space is filled with insulation material is a very difficult task and takes a considerable amount of time. To solve this problem, a method may be used in which the insulation space that is not filled with insulation material is created into a vacuum, the insulation material is depressurized in a separate insulation storage chamber (20) outside the liquefied gas storage tank (10), and then the depressurized insulation material is transferred to the insulation space to be filled.

[0042] At this time, the depressurized state of the insulation material may be a state in which the insulation material is depressurized to a vacuum or a very low pressure close to a vacuum within the insulation material storage chamber (20). Additionally, the insulation material storage chamber (20) may be formed in multiple units so that the insulation material can be depressurized gradually, and an agitator or the like may be provided inside to facilitate depressurization.

[0043] The insulation material transfer system (1) of the present invention may be a system for transferring insulation material into the insulation space of a liquefied gas storage tank (10) in a vacuum state. Preferably, the insulation material transfer system (1) may be a system for receiving insulation material in a depressurized state from the aforementioned insulation material storage chamber (20) and physically transferring it into the insulation space of the liquefied gas storage tank (10) while maintaining a vacuum. In the following description, the case in which insulation material in a depressurized state is transferred from the insulation material storage chamber to the insulation material transfer system (1) is described as an example, but is not limited thereto.

[0044] The insulation material horizontal conveying device (100) may be a device for conveying insulation material horizontally. At this time, conveying horizontally may include not only conveying it completely parallel to the ground, but also conveying it at an angle that forms a predetermined angle with the ground. Specific embodiments of the insulation material horizontal conveying device (100) will be described later.

[0045] The insulation material vertical conveying device (200) may be a device for conveying insulation material vertically. At this time, conveying vertically may include not only conveying it completely perpendicular to the ground, but also conveying it at an angle that forms a predetermined angle with the direction perpendicular to the ground. Specific embodiments of the insulation material vertical conveying device (200) will be described later.

[0046] The vacuum pump (300) can transfer the insulation material in a reduced pressure state received from the insulation material storage chamber (20) to the insulation space of the liquefied gas storage tank (10) while maintaining the vacuum level by vacuuming at least a part of the insulation material transfer system (1).

[0047] The insulation material horizontal conveying device (100) or the insulation material vertical conveying device (200) may include a small particle powder removal unit (400) for removing small particle powder from the insulation material.

[0048] Insulating materials can be damaged by various causes, such as depressurization processes, transport processes, or manufacturing defects. When small particle powder, such as that of damaged insulating material, is filled into the insulating space of the liquefied gas storage tank (10), the small particle powder may be positioned between the insulating materials, increasing the contact area and causing a decrease in insulating performance. However, the small particle powder is not limited to damaged insulating material and may be an impurity having a relatively small particle size compared to the insulating material.

[0049] The small particle powder removal unit (400) is provided in the insulation material horizontal conveying device (100) or the insulation material vertical conveying device (200) so that the small particle powder is removed simultaneously with the conveying of the insulation material, thereby preventing the small particle powder from being filled into the insulation space of the liquefied gas storage tank (10). Specific embodiments of the small particle powder removal unit (400) will be described later.

[0050] The insulation material conveying system (1) of the present invention may further include a small particle powder receiving section (500) provided below the insulation material horizontal conveying device (100) or the insulation material vertical conveying device (200) to receive small particle powder removed from the small particle powder removal section (400).

[0051] The small particle powder receiving section (500) may be combined with the insulation material horizontal conveying device (100) or the insulation material vertical conveying device (200), or may be spaced apart. Additionally, the small particle powder receiving section (500) is provided below the insulation material horizontal conveying device (100) or the insulation material vertical conveying device (200), so that the small particle powder removed from the insulation material horizontal conveying device (100) or the insulation material vertical conveying device (200) can be recovered by gravity without additional equipment.

[0052] The insulation material vertical conveying device (200) may be positioned at the rear end of the insulation material horizontal conveying device (100), and the insulation material conveying system (1) of the present invention further includes an intermediate receiving section (600) that is provided between the insulation material horizontal conveying device (100) and the insulation material vertical conveying device (200) and receives insulation material that has passed through the insulation material horizontal conveying device (100), and the insulation material received in the intermediate receiving section (600) may be supplied to the lower end of the insulation material vertical conveying device (200).

[0053] The intermediate receiving section (600) includes an inclined surface facing the lower part of the insulation material vertical conveying device (200), so that the insulation material passing through the insulation material horizontal conveying device (100) slides along the inclined surface and gathers toward the insulation material vertical conveying device (200), allowing the insulation material conveying of the insulation material vertical conveying device (200) to proceed smoothly without interruption.

[0054] The insulation material vertical transfer device (200) may be extended upward above the liquefied gas storage tank (10), and the insulation material transfer system (1) of the present invention may further include a gravity transfer device (700) that connects the insulation material vertical transfer device (200) and the liquefied gas storage tank (10) and transfers the insulation material passing through the insulation material vertical transfer device (200) into the insulation space of the liquefied gas storage tank (10) by gravity.

[0055] As shown in FIG. 2, the vertical insulation conveying device (200) can be extended to a height higher than the liquefied gas storage tank (10).

[0056] Additionally, the gravity transfer device (700) may be configured in the form of a pipe connecting the upper end of the insulation material vertical transfer device (200) and the opening of the liquefied gas storage tank (10). The insulation material transferred to the upper end of the insulation material vertical transfer device (200) by the insulation material vertical transfer device (200) can be transferred by gravity into the insulation space through the opening of the liquefied gas storage tank (10) located relatively lower via the gravity transfer device (700).

[0057] The insulation material conveying system (1) of the present invention further includes a container (800) containing a portion of an insulation material horizontal conveying device (100) and an insulation material vertical conveying device (200) inside, and another portion of the insulation material vertical conveying device (200) may extend upward from the container.

[0058] As illustrated in FIGS. 1 and 2, the insulation material vertical conveying device (200) may have a portion located within the container (800) and a portion extending upward from the container (800). However, it is not limited thereto, and the container (800) may be configured to contain the entire insulation material vertical conveying device (200) inside.

[0059] The insulation material transfer method of the present invention, in a method for transferring an insulation material by receiving an insulation material and transferring it into an insulation space of a liquefied gas storage tank (10), comprises: a horizontal transfer step for transferring the insulation material horizontally; and a vertical transfer step for transferring the insulation material vertically, wherein the horizontal transfer step and the vertical transfer step may be maintained in a vacuum state.

[0060] In addition, the insulation material conveying method of the present invention may further include a small particle powder removal step for removing small particle powder from the insulation material.

[0061] In addition, the horizontal conveying step and the small particle powder removal step, and / or the vertical conveying step and the small particle powder removal step can be performed simultaneously.

[0062]

[0063] <Horizontal insulation material conveying device (100)>

[0064] Hereinafter, an embodiment of the above-described horizontal insulation material conveying device (100) will be described.

[0065] Referring to FIG. 3, the insulation material horizontal conveying device (100) of the present invention may include: a body part (110) that extends in one direction and accommodates an insulation material inside; a conveying part (120) located inside the body part (110) and capable of conveying the insulation material in one direction; and a small particle powder removal part (400) capable of removing small particle powder from the insulation material as the insulation material is conveyed.

[0066] The body portion (110) extends in one direction, and the insulation material contained within can be transported in one direction along the interior of the body portion (110) by the transport portion (120).

[0067] For example, the body portion (110) may have a cylindrical shape with both ends open. Insulating material is introduced into one end of the body portion (110), and the insulating material transported along the interior of the body portion (110) can be discharged through the other end of the body portion (110).

[0068] The conveying unit (120) is located inside the body unit (110) and can convey the insulation material in one direction.

[0069] For example, the conveying unit (120) includes a rotating shaft (121) extending in one direction within the body unit (110); and a conveying blade (122) connected to the rotating shaft (121), and as the conveying blade (122) rotates, the insulating material contained within the body unit (110) can be pushed out and conveyed.

[0070] The transfer wing (122) may be spaced apart from the body part (110), or one end may be connected to the rotation axis (121) and the other end may be connected to the inner surface of the body part (110).

[0071] Although not shown in the drawing, when the conveying blade (122) is spaced apart from the body part (110), the body part (110) is fixed and does not move when the conveying blade (122) rotates. Therefore, as the conveying blade (122) rotates, the insulation material contained in the lower part of the body part (110) can be pushed out by the conveying blade (122) and transported in one direction.

[0072] As illustrated in FIG. 3, when one end of the conveying wing (122) is connected to the rotation axis (121) and the other end is connected to the inner surface of the body part (110), the body part (110) also rotates as the conveying wing (122) rotates. Accordingly, as the conveying wing (122) and the body part (110) rotate, the insulating material inside the body part (110) also rotates together and can be pushed out by the conveying wing (122) and conveyed in one direction.

[0073] The conveying wing (122) may have a tilt or twist in one direction, and accordingly, the insulating material may be conveyed in one direction.

[0074] The small particle powder removal section (400) is formed on at least a portion of the perimeter surface of the body section (110) and may have a plurality of openings smaller than the size of the insulating material.

[0075] The small particle powder removal section (400) may be formed in the form of a sieve having a plurality of openings of a size through which small particle powder can pass, on a part of the circumferential surface of the body section (110).

[0076] Additionally, the small particle powder removal section (400) may be formed in an area other than the area (111) where the body section (110) and the conveying wing (122) are joined, among the periphery surfaces of the body section (110).

[0077] Among the insulating material being transported in one direction through the body part (110), if there is a small particle powder smaller in size than the opening of the small particle powder removal part (400), the small particle powder can pass through the opening of the small particle powder removal part (400) and be removed out of the body part (110).

[0078] The horizontal insulation material conveying device (100) of the present invention may further include a driving unit (130) capable of rotating a rotating shaft (121); and a vibration generating unit (140) capable of generating vibration and transmitting it to the rotating shaft (121).

[0079] The driving unit (130) can drive the rotation shaft (121) to rotate and can control the rotation speed, direction, etc. of the rotation shaft (121). For example, if the insulation material is not transported properly or if the small particle powder is not removed, the rotation speed of the rotation shaft (121) can be increased or decreased.

[0080] The vibration generating unit (140) can generate vibrations and transmit vibrations to the rotating shaft (121), the conveying blade (122), and the body (110), thereby facilitating the removal of small particle powder through the small particle powder removal unit (400).

[0081] Since small particle powder not only blocks the filter and hinders vacuuming, but also fails to provide normal thermal insulation performance, the thermal insulation performance of the insulation material can be improved through the small particle powder removal unit (400).

[0082] In addition, the horizontal insulation material conveying device (100) of the present invention may further include a vibration reduction unit (150) capable of reducing vibration of the vibration generating unit (140).

[0083] The vibration reduction unit (150) can prevent device failure and maintain a vacuum state smoothly by reducing the vibration of the device itself, which is equipped with the vibration generation unit (140) and the driving unit (130), separately from the vibration generated by the vibration generation unit (140) being transmitted to the rotating shaft (121).

[0084] The driving unit (130), the vibration generating unit (140), and the vibration reducing unit (150) can be connected to both ends of the rotating shaft (121).

[0085]

[0086] <Insulation material vertical conveying device (200)>

[0087] Hereinafter, an embodiment of the above-described vertical insulation material conveying device (200) will be described.

[0088] Referring to FIGS. 4 to 6, the insulation material vertical conveying device (200) of the present invention, for conveying an insulation material, comprises: a fixed body part (210) extending in a vertical direction and having a screw formed on its outer surface; and a rotating body part (220) surrounding the outer surface of the fixed body part (210). The rotating body part (220) includes a bucket conveyor (230) installed vertically along the outer and inner surfaces of the rotating body part (220), and as the rotating body part (220) rotates, the bucket conveyor (230) can move by friction between the bucket (231) of the bucket conveyor (230) and the screw (211), and when the bucket (231) moves from the outer surface to the inner surface of the rotating body part (220), the insulating material is received in the bucket (231), and when the bucket (231) moves from the inner surface to the outer surface of the rotating body part (220), the insulating material can be discharged from the bucket (231).

[0089] The insulation material vertical conveying device (200) can vertically convey insulation material to fill the insulation material into the insulation space of a liquefied gas storage tank (10) having a large volume and height.

[0090] The vertical insulation material conveying device (200) of the present invention includes an inner fixed body part (210) and a rotating body part (220) surrounding the outer surface of the fixed body part (210).

[0091] The fixed body portion (210) is extended in a vertical direction and has a screw (211) formed on its outer surface, and can be fixed. For example, the fixed body portion (210) may have a cylindrical shape extended in a vertical direction.

[0092] The rotating body part (220) is formed in a shape that surrounds the outer surface of the fixed body part (210) and can rotate. For example, the rotating body part (220) may have a cylindrical shape with both ends open. That is, a screw (211) may be located between the outer surface of the fixed body part (210) and the inner surface of the rotating body part (220).

[0093] A bucket conveyor (230) can be installed vertically on the outer and inner surfaces of a rotating body part (220), as shown in FIGS. 4 and 5. Specifically, a conveyor (232) is installed to surround the outer and inner surfaces along the height direction of the rotating body part (220), and a plurality of buckets (231) can be installed at predetermined intervals on the conveyor (232). That is, as the conveyor (232) moves, the buckets (231) can move from the outer surface of the rotating body part (220) to between the outer surface of the fixed body part (210) and the inner surface of the rotating body part (220), or in the opposite direction.

[0094] Additionally, when the bucket (231) is positioned between the outer surface of the fixed body part (210) and the inner surface of the rotating body part (220), the bucket (231) may be configured to be positioned on the screw (211) of the fixed body part (210).

[0095] For example, the point where the bucket (231) moves along the conveyor (232) from the outer surface to the inner surface of the rotating body part (220) may coincide with one end of the screw (211) of the fixed body part (210). That is, the bucket (231) that has moved from the outer surface to the inner surface of the rotating body part (220) may be placed on one end of the screw (211).

[0096] A bucket (231) placed at one end of the lower portion of the screw (211) can be transported vertically along the screw (211). Specifically, referring to (a), (b), and (c) of FIG. 6 in order, when the rotating body portion (220) rotates counterclockwise, the bucket conveyor (230) is transported vertically upward along the screw (211) by friction between the bucket (231) of the bucket conveyor (230) and the screw (211), so that the bucket (231) can be placed at the other end of the upper portion of the screw (211).

[0097] The point where the bucket (231) moves along the conveyor (232) from the inner surface to the outer surface of the rotating body part (220) may coincide with the other end of the screw (211) of the fixed body part (210). That is, the bucket (231) that is transported along the screw (211) to the other end of the screw (211) may move from the inner surface to the outer surface of the rotating body part (220).

[0098] At this time, when the bucket (231) moves from the outer surface to the inner surface of the rotating body part (220), the insulating material is received in the bucket (231), and while moving along the screw (211) with the insulating material received, the insulating material can be discharged from the bucket (231) when the bucket (231) moves from the inner surface to the outer surface of the rotating body part (220). At this time, the position where the bucket (231) receives and discharges the insulating material can always be fixed.

[0099] A relatively heavy bucket (231) containing insulation material can be supported by the weight of a screw (211), and a relatively light bucket (231) discharging insulation material can move along the outer surface of a rotating body (220).

[0100] As described above, the vertical insulation material conveying device (200) of the present invention is configured by combining a screw (211) and a bucket conveyor (230), so that the insulation material is conveyed along the screw (211) while contained in the bucket (231), thereby reducing the risk of damage to the insulation material due to friction with the screw (211). In addition, since the heavy bucket (231) containing the insulation material is conveyed while its weight is supported by the screw (211), the problem of uneven weight distribution can be resolved and the conveying efficiency can be improved.

[0101] The vertical insulation material conveying device (200) of the present invention may further include a driving unit (240) capable of rotating the rotating body part (220).

[0102] The driving unit (240) can adjust the rotational speed or direction of the rotating body unit (220). Specifically, the vertical transport speed of the insulation material can be adjusted by adjusting the rotational speed of the rotating body unit (220) according to the amount of insulation material supplied to the insulation material vertical transport device (200) or the amount of insulation material to be filled into the insulation space of the liquefied gas storage tank (10).

[0103] Additionally, the drive unit (240) can rotate the rotating body unit (220) in a direction in which the bucket (231) rises along the screw (211). That is, insulation material can be received from the lower side of the insulation material vertical conveying device (200) and discharged from the upper side of the insulation material vertical conveying device (200).

[0104] The vertical insulation material conveying device (200) of the present invention may further include an insulation material receiving portion (250) capable of receiving insulation material discharged from a bucket (231).

[0105] The insulation receiving portion (250) receives insulation discharged from the bucket (231), and the received insulation can be filled into the insulation space of the liquefied gas storage tank (10).

[0106]

[0107] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by these embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. In an insulation material transfer system for transferring insulation material into an insulation space of a liquefied gas storage tank, A horizontal insulation material conveying device for conveying the above insulation material horizontally; A vertical insulation material conveying device for conveying the insulation material vertically according to the height of the above-mentioned liquefied gas storage tank; and An insulation material transfer system comprising a vacuum pump that vacuums at least a portion of the insulation material transfer system.

2. In Claim 1, The above-mentioned horizontal insulation conveying device or the above-mentioned vertical insulation conveying device includes, An insulation material conveying system provided with a small particle powder removal unit for removing small particle powder from the insulation material.

3. In Claim 2, The above-mentioned horizontal insulation conveying device or the above-mentioned vertical insulation conveying device is, An insulation material conveying system including a small particle powder removal unit for removing small particle powder from the insulation material.

4. In Claim 1, The above-described vertical insulation conveying device is an insulation conveying system positioned at the rear end of the above-described horizontal insulation conveying device.

5. In Claim 4, It further includes an intermediate receiving section provided between the above-mentioned insulation material horizontal conveying device and the above-mentioned insulation material vertical conveying device, and receiving the insulation material that has passed through the above-mentioned insulation material horizontal conveying device. An insulation material conveying system in which the insulation material contained in the above intermediate receiving section is supplied to the lower part of the above insulation material vertical conveying device.

6. In Claim 1, The above-mentioned vertical insulation conveying device is, An insulation material transfer system extending upward above the above-mentioned liquefied gas storage tank.

7. In Claim 6, An insulation material transfer system further comprising a gravity transfer device that connects the above-mentioned insulation material vertical transfer device and the above-mentioned liquefied gas storage tank, wherein the insulation material passing through the above-mentioned insulation material vertical transfer device is transferred into the insulation space of the above-mentioned liquefied gas storage tank by gravity.

8. In Claim 1, The above-mentioned horizontal insulation material conveying device and a container containing a part of the above-mentioned vertical insulation material conveying device inside further include Another part of the above-mentioned vertical insulation conveying device is an insulation conveying system extending upwards toward the container.

9. A method for transferring insulation material by receiving the insulation material and transferring it into the insulation space of a liquefied gas storage tank, A horizontal transfer step for horizontally transferring the above insulation material; and It includes a vertical transport step for vertically transporting the above insulation material, and The above horizontal transfer step and the above vertical transfer step are a method for transferring insulation material in which a vacuum state is maintained.

10. In Claim 9, A method for transporting insulation material, further comprising a small particle powder removal step for removing small particle powder from the insulation material.

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