KR102751641B1 - apparatus of manufacturing liquefied gas storage tank - Google Patents

Abstract

The present invention relates to a manufacturing device for a liquefied gas storage tank, and is a manufacturing device for a liquefied gas storage tank in which an insulating structure is installed on a wall forming an internal space, the manufacturing device including: a plurality of platforms installed in a multi-layered structure in the internal space; a support member supporting the plurality of platforms in a height direction within the internal space; and a lifting member provided on a perimeter adjacent to the wall at least on one of the platforms, wherein the lifting member includes a rail continuously provided along at least a part of the perimeter of the platform; and a hoist provided to be movable along the rail and lifting the insulating structure.

Description

{apparatus of manufacturing liquefied gas storage tank}

The present invention relates to a device for manufacturing a liquefied gas storage tank.

With recent technological developments, liquefied gases such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG) are widely used as replacements for gasoline and diesel.

LNG carriers, LNG RVs (Regasification Vessels), LNG FPSOs (Floating, Production, Storage and Offloading), LNG FSRUs (Floating Storage and Regasification Units), etc., which transport or store liquefied gases such as LNG at sea, are equipped with liquefied gas storage tanks (so-called “cargo holds”) to store LNG in an extremely low-temperature liquid state.

Liquefied gas storage tanks can generate boil-off gas (BOG) due to heat intrusion from the outside, and the core technology of designing liquefied gas storage tanks is to reduce the boil-off rate (BOR), which is the rate of vaporization of the boil-off gas, through insulation design. Therefore, such liquefied gas storage tanks can have at least two layers of insulation structure.

These liquefied gas storage tanks (especially membrane type) are constructed by installing an insulation structure on the wall surface in the internal space, and scaffolding has been used in the internal space to store/transport the insulation structure.

However, when using multi-layer and truss-structured scaffolding as in the past, various inconveniences existed when handling the insulation structure, and as a result, labor reduction and efficiency improvement were not properly achieved. Therefore, improvements in this regard are required.

The present invention has been created to solve the problems of the prior art as described above, and the purpose of the present invention is to provide a device for manufacturing a liquefied gas storage tank that can obtain the effects of increased work efficiency and reduced man-hours by improving the scaffolding shape, etc. so that the insulation structure can be handled more easily.

According to one aspect of the present invention, a manufacturing device for a liquefied gas storage tank is a manufacturing device for a liquefied gas storage tank in which an insulating structure is installed on a wall forming an internal space, the manufacturing device comprising: a plurality of platforms installed in a multi-layered structure in the internal space; a support member supporting the plurality of platforms in a height direction within the internal space; and a lifting member provided on a perimeter adjacent to the wall in at least one of the platforms, wherein the lifting member includes a rail continuously provided along at least a portion of the perimeter of the platform; and a hoist provided to be movable along the rail and lifting the insulating structure.

Specifically, the platform on which the lifting part is provided may be provided with an extension for installing the rail.

Specifically, the extension may have an inner end that is fixed to the periphery of the platform; and an outer end that is connected outwardly to the inner end and has an adjustable position relative to the inner end.

Specifically, the outer end portion may be provided in a detachable or foldable manner relative to the inner end portion.

Specifically, the outer end portion may be provided to be able to slide in an inward and outward direction relative to the inner end portion.

The device for manufacturing a liquefied gas storage tank according to the present invention can obtain the effects of increased work efficiency and reduced man-hours by improving the scaffolding shape, etc. so that the insulation structure can be handled more easily.

Figure 1 is a perspective view of a liquefied gas storage tank according to the present invention.
Figure 2 is a partial cross-sectional view of a liquefied gas storage tank according to the present invention.
Figure 3 is a perspective view of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 4 is a partial plan view of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 5 is a partial side view of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 6 is a partial side view of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
Figure 7 is a partial perspective view of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
Figure 8 is a partial plan view of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 9 is a side view of an extension portion of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 10 is a side view of an extension portion of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
Figure 11 is a conceptual diagram using a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
Figure 12 is a perspective view of a handling section of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 13 is a side view of a handling section of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
FIG. 14 is a side view of a handling section of a device for manufacturing a liquefied gas storage tank according to the first embodiment of the present invention.
Figure 15 is a front view of a device for manufacturing a liquefied gas storage tank according to a second embodiment of the present invention.
Figure 16 is a front view of a lifting part of a device for manufacturing a liquefied gas storage tank according to a second embodiment of the present invention.

The purpose, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. In this specification, when adding reference numerals to components in each drawing, it should be noted that, as much as possible, the same components are given the same numerals even if they are shown in different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

For reference, the present invention includes a vessel equipped with a liquefied gas storage tank as described below. At this time, the vessel may be at least a vessel that uses liquefied gas as propulsion fuel/power generation fuel, and is a concept that includes gas carriers, merchant ships that transport cargo or people other than gas, FSRUs, FPSOs, bunkering vessels, marine plants, etc.

In addition, it should be noted that the inner and outer directions below are defined as the direction toward the center of the storage space being the inner direction.

Below, before describing a device for manufacturing a liquefied gas storage tank according to the present invention, a liquefied gas storage tank to which the present invention is applied will first be described with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view of a liquefied gas storage tank according to the present invention, and FIG. 2 is a partial cross-sectional view of a liquefied gas storage tank according to the present invention.

Referring to FIGS. 1 and 2, the liquefied gas storage tank (1) according to the present invention is mounted on a hull. At this time, the liquefied gas storage tank (1) may be a membrane type in which the bulkhead structure of the hull forms the outer surface of the tank, or may be an independent type in which the liquefied gas storage tank (1) is introduced and installed in the internal space of the hull.

The type of the liquefied gas storage tank (1) is not particularly limited, and the location where the liquefied gas storage tank (1) is mounted on the ship (inside the ship or outside the ship, such as on the deck) is also not limited. However, the liquefied gas storage tank (1) of the present invention may have a structure in which an insulating layer is arranged in an inward direction.

For reference, in this specification, the liquefied gas storage tank (1) is assumed to be a membrane type in which an insulation layer is directly constructed on the bulkhead of the hull. However, since the liquefied gas storage tank (1) may be provided as an independent type, it should be noted that the expression hull in the following may be interpreted as the outer body of the liquefied gas storage tank (1).

The liquefied gas storage tank (1) has a storage space. The storage space can store liquefied gas, and the liquefied gas can be LNG. In the following description, it will be assumed that the liquefied gas is LNG, but in the present invention, the liquefied gas can include all substances (LPG, ethane, hydrogen, ammonia, etc.) that have a boiling point lower than room temperature, are forcibly liquefied for storage, and have a calorific value in addition to LNG.

The storage space of the liquefied gas storage tank (1) can be surrounded by a wall (10) to form a closed space. However, a dome (20), etc. is installed on the upper surface of the wall (10) to allow the inflow and outflow of the liquefied gas. That is, the liquefied gas storage tank (1) can include a wall (10) and a dome (20).

The wall (10) forms a storage space for receiving liquefied gas and also forms an insulating space. Specifically, the wall (10) has a primary barrier (11), a primary insulating wall (12), a secondary barrier (13), and a secondary insulating wall (14) from the inner side to the outer side. For reference, in this specification, the inner side means a direction toward the inside of the space where the liquefied gas is stored, and the outer side means the opposite direction.

The primary barrier (11) forms a storage space for receiving liquefied gas. The primary barrier (11) may be made of a metal material to prevent brittle fracture due to low-temperature liquefied gas, and is composed of, for example, SUS, INVAR, etc.

In addition, the primary barrier (11) may be formed with a wrinkle or uneven structure to prevent sloshing. These primary barriers (11) are overlapped and sealed by welding, etc., thereby making the entire storage space (excluding the dome (20) portion) a closed space.

The primary barrier (11) functions as a barrier to prevent leakage of liquefied gas. In addition, the secondary barrier (13) described later also functions as a barrier to prevent leakage of liquefied gas, so the liquefied gas storage tank (1) of the present invention has a structure that implements leakage prevention at least twice.

The primary insulation wall (12) is arranged on the outside of the primary barrier (11) and implements the primary insulation function. The primary insulation wall (12) may have a form in which plywood and insulation blocks are laminated. The plywood is provided on the inside of the primary insulation wall (12), and an anchoring unit (not shown) is fixed to the plywood. The anchoring unit is a configuration provided for overlapping welding of the primary barrier (11) and may be made of a metal material identical/similar to the primary barrier (11).

The insulation block is provided on the outside of the primary insulation wall (12) and has insulation properties. The insulation block may be made of a polyurethane foam block or a box block containing insulation material. Such an insulation block may be bonded and fixed to the secondary barrier wall (13) described later by means of bonding or the like, or may be fixed to the hull by means of bolting or the like.

The primary insulating wall (12) is placed within a closed space between the primary barrier (11) and the secondary barrier (13). The space in which the primary insulating wall (12) is placed can form an insulated space, and the insulated space in which the primary insulating wall (12) is placed can be referred to as a primary insulated space.

A connecting insulation wall (121) is filled between a pair of adjacent primary insulation walls (12) to prevent the insulation structure (IP) from being disconnected. The connecting insulation wall (121) may have a structure including plywood (not shown) and insulation blocks (not shown) identical to/similar to the primary insulation wall (12).

The inner surfaces of the primary insulation wall (12) and the connecting insulation wall (121) can be arranged parallel to each other, and the primary barrier wall (11) can be installed on the inner surface of the primary insulation wall (12) and the inner surface of the connecting insulation wall (121).

The secondary barrier (13) is provided on the outside of the primary insulating wall (12). The secondary barrier (13) has a sealing function that prevents leakage of liquefied gas together with the primary barrier (11), and the secondary barrier (13) prevents leakage of liquefied gas in the event of damage to the primary barrier (11).

The secondary barrier (13) may be, for example, a composite sheet in which a metal sheet and a glass fiber sheet are combined in various ways, or may be made of a metal material such as SUS or INVAR.

The secondary barrier wall (13) may be laminated on the secondary insulating wall (14). A connecting barrier wall (not shown) may be laminated to seal the gap between the secondary insulating walls (14). The secondary barrier wall (13) on the secondary insulating wall (14) may be made of a relatively rigid material, and the connecting barrier wall between the secondary insulating walls (14) may be made of a relatively flexible material to prepare for shrinkage and expansion.

The secondary insulating wall (14) is placed on the outside of the secondary barrier wall (13). The secondary insulating wall (14) has an insulating function similar to the primary insulating wall (12), and is formed of a structure in which plywood and insulating blocks are laminated in the same/similar manner as the primary insulating wall (12).

However, the stacking order of the plywood and insulation blocks of the secondary insulation wall (14) may be opposite to that of the primary insulation wall (12). The primary insulation wall (12) may have plywood provided on the inner surface to provide an anchoring unit for welding fixation of the primary barrier wall (11), while the secondary insulation wall (14) may have plywood provided on the outer surface to fix it to the hull side.

The secondary insulation wall (14) can be fixed to the inside of the hull using bolts, and can also be fixed using mastic (15). The mastic (15) acts as an adhesive to fix the plywood of the secondary insulation wall (14) to the hull.

The secondary insulation wall (14) is placed within a closed space between the secondary barrier (13) and the hull, and the space in which the secondary insulation wall (14) is placed may be referred to as a secondary insulation space.

That is, the wall (10) is arranged to be stacked in the order of the first barrier (11) - first insulation space (first insulation wall (12)) - second barrier (13) - second insulation space (second insulation wall (14)) - hull from the inside to the outside, and the first insulation space and the second insulation space are finished with a dome (20) described later.

In this way, a storage space of a liquefied gas storage tank (1) can be formed by a wall (10) having a double barrier and a double insulating wall (insulating space). The wall (10) is formed by including a flat surface, a curved surface, an inclined surface, etc., thereby forming a storage space of various shapes.

A dome (20) is provided on a wall (10) forming the upper surface of a storage space. The wall (10) forming the storage space has an open shape on the upper surface for the inflow and outflow of liquefied gas or evaporated gas, and a dome (20) is installed and finished in the open portion.

Domes (20) may be provided in multiple numbers to independently handle the inflow and outflow of liquefied gas and vaporized gas. The dome (20) for the inflow and outflow of liquefied gas may be referred to as a tank dome (20a), and the dome (20) for the inflow and outflow of vaporized gas may be referred to as a vapor dome (20b).

At this time, a pump tower (30) can be extended downward from the vapor dome (20b) to allow the inflow and outflow of liquefied gas, and the tank dome (20a) can be positioned at a location spaced from the vapor dome (20b) and can receive evaporated gas without the pump tower (30) and discharge it to the outside.

Hereinafter, a liquefied gas storage tank (1) according to the present invention will be described with reference to FIG. 3, etc.

FIG. 3 is a perspective view of a device for manufacturing a liquefied gas storage tank according to a first embodiment of the present invention, FIG. 4 is a partial plan view of a device for manufacturing a liquefied gas storage tank according to a first embodiment of the present invention, and FIGS. 5 and 6 are partial side views of a device for manufacturing a liquefied gas storage tank according to a first embodiment of the present invention.

In addition, FIG. 7 is a partial perspective view of a liquefied gas storage tank manufacturing device according to the first embodiment of the present invention, FIG. 8 is a partial plan view of a liquefied gas storage tank manufacturing device according to the first embodiment of the present invention, and FIGS. 9 and 10 are side views of an extension portion of a liquefied gas storage tank manufacturing device according to the first embodiment of the present invention. In addition, FIG. 11 is a conceptual diagram using a liquefied gas storage tank manufacturing device according to the first embodiment of the present invention.

Referring to FIGS. 3 to 11, a liquefied gas storage tank manufacturing device (100) according to the first embodiment of the present invention is installed and used in the internal space of a liquefied gas storage tank (1), and includes a platform (110), a support member (120), and a lifting member (130).

The platform (110) is installed in the interior space and can form a horizontal deck. The platform (110) is provided in multiple pieces so that it can be installed in a multi-layer structure in the interior space. In particular, the platform (110) is for installing an insulation structure (IP) on the wall (10) and has at least a portion adjacent to the wall (10).

For example, the platform (110) may have a size corresponding to the cross-section of the internal space of the liquefied gas storage tank (1) so that it can be placed adjacent to the wall (10). Accordingly, a worker can perform work while positioned around the perimeter of the platform (110) and approaching the wall (10).

At least some of the platforms (110) may have a form in which the central portion is perforated. This is to secure a work space for placing and using equipment such as a mastic dispenser (200) described later, a work tool, a forklift, etc. That is, at least two or more platforms (110) adjacent to each other vertically may be provided in a ring form in which the central portion is perforated to form an open work space in the center.

The platform (110) may include a work platform (111) for installing a mastic dispenser (200), etc. The work platform (111) is provided adjacent to the lower portion of the wall (10), and the central portion is supported by a girder (not shown). The work platform (111) may have a relatively closed plane, and has a shape that prevents a worker from falling.

The work platform (111) can be provided at a height corresponding to an opening (not shown, side opening) provided in the wall (10), and a worker can enter the work platform (111) through the opening to prepare or perform work.

The platform (110) may include an upper platform (112) adjacent to the upper surface of the wall (10). The upper platform (112) is provided adjacent to the upper surface of the wall (10) and its central portion is supported by a girder. The upper platform (112) is used to construct an insulation structure (IP) on the upper surface of the wall (10), and, like the work platform (111), may be formed in a form having a closed plane that prevents a worker from falling.

However, since the internal space at the height where the upper platform (112) is placed may have a smaller cross-section than the internal space at the height where the work platform (111) is placed, the upper platform (112) may have a smaller cross-section than the work platform (111).

The working platform (111) and the upper platform (112) are mostly closed in plan, and the parts where stairs or elevators are placed can of course be formed in a vertically penetrating form.

A rail (131) of a lifting part (130) can be installed on a platform (110) including a working platform (111) and an upper platform (112), which will be described in detail below.

The support member (120) supports the platform (110) vertically. The support member (120) may have legs (not shown) for supporting the platform (110) to the bottom of the wall (10). In addition, the support member (120) may include support columns (not shown) for supporting a plurality of platforms (110) in the height direction within the internal space.

The support member (120) can support the platform (110) at a certain height by penetrating the platform (110) upward and downward, and the support member (120) can be formed as a truss structure for structural stability, etc.

However, the support member (120) may not be provided in the central portion penetrating the platform (110) so as not to interfere with the work space described above. That is, the support member (120) is provided around the platform (110) to stably support the platform (110) adjacent to the wall (10), thereby ensuring safety when installing an insulation structure (IP) on the wall (10).

The lifting member (130) is installed on the platform (110) and lifts the insulation structure (IP). The insulation structure (IP) must be installed on the upper surface, side surface, corner surface, lower surface, front surface, and back surface of the wall (10) forming the liquefied gas storage tank (1), and the insulation structure (IP) must be lifted to a certain height or higher, except for the lower surface.

Therefore, the lifting member (130) has the function of lifting the insulation structure (IP) to the installation position. At this time, the lifting member (130) can utilize the platform (110) having a multi-layer structure as a support structure. For example, the lifting member (130) is provided on the perimeter adjacent to the wall (10) on at least one platform (110). Since the insulation structure (IP) must be installed on the wall (10), it is preferable that the lifting member (130) be installed on the perimeter of the platform (110) so that the insulation structure (IP) can be lifted through the space between the wall (10) and the platform (110).

Specifically, the lifting member (130) may include a rail (131) provided on the platform (110) and a hoist (132) installed on the rail (131). The rail (131) is provided continuously along at least a portion of the perimeter of the platform (110). The rail (131) may have a straight line, a curve, a combination of a straight line and a curve, etc., and may be provided on the entire perimeter of the platform (110) to form a closed curve, or may be provided on a portion of the perimeter of the platform (110) to form a straight line or a curve.

The rail (131) has a continuous shape, so that it can form a movement path of the hoist (132) to be described later. In addition, the rail (131) is provided so that it can support the load of the insulation structure (IP), and for this purpose, an extension (113) may be provided on the platform (110). Hereinafter, before explaining other configurations of the lifting unit (130), the extension (113) provided on the platform (110) will be described first.

The extension (113) is provided around the platform (110) for the installation of the rail (131) as shown in FIG. 7 and below. At this time, the extension (113) can be fixed by the platform (110) and the support (120). In addition, the extension (113) includes an inner end (113a) and an outer end (113b), and the inner end (113a) is fixedly installed around the platform (110).

On the other hand, the outer end (113b) is connected to the inner end (113a) outwardly and may be provided with a rail (131). The outer end (113b) has a form in which the position relative to the inner end (113a) can be adjusted. For example, the outer end (113b) may be provided in a detachable or foldable manner relative to the inner end (113a) as shown in Fig. 9. Through this, the outer end (113b) may be provided between the platform (110) and the wall (10) without interfering with the work.

Alternatively, the outer end (113b) may be provided to be able to slide in an inward and outward direction relative to the inner end (113a). That is, the inner end (113a) and the outer end (113b) may form a telescopic structure, and the outer end (113b) may be provided with a structure capable of fixing the degree of sliding.

The outer end (113b) is provided to be detachable, rotatable, and slidable relative to the inner end (113a), thereby preventing interference between the wall (10) and the platform (110) due to the outer end (113b). In addition, at the same time, a rail (131) is installed on the outer end (113b) to perform a lifting function of the insulation structure (IP).

Below, the detailed configuration of the lifting unit (130) is described. The lifting unit (130) includes the rail (131) mentioned above and a hoist (132) provided on the rail (131). The hoist (132) is provided so as to be able to move along the rail (131), and for this purpose, wheels, etc. may be provided on the hoist (132).

The hoist (132) lifts the insulation structure (IP). The hoist (132) may have a structure such as a pulley equipped with wire or chain, and may lift the insulation structure (IP) by hanging it on a lug (142) provided on the insulation structure (IP).

More than one hoist (132) can be used for one insulation structure (IP), which can vary depending on the number of lugs (142) of the insulation structure (IP). For this purpose, more than one hoist (132) can be assigned to one rail (131). Of course, even if one hoist (132) is used for one insulation structure (IP), multiple hoists (132) can be provided for each rail (131) for backup.

Below, a working method using a lifting part (130) is described with reference to Fig. 11.

First, an insulation structure (IP) is manufactured in which a secondary insulation wall (14), a secondary barrier (13), and a primary insulation wall (12) are assembled as one body, and mastic (15) is applied to this insulation structure (IP) from a mastic dispenser (200). Since the mastic dispenser (200) is provided on a work platform (111), the insulation structure (IP) passes through the work platform (111) regardless of the position of the wall (10) to be installed.

A handling member (140) can be attached to an insulating structure (IP) to which mastic (15) is applied. The handling member (140) has a function of preventing contamination or damage to the insulating structure (IP) while enabling handling/lifting of the insulating structure (IP).

The handling part (140) may have a body (141) that is fastened to the insulation structure (IP) using a fastener (122) provided in the insulation structure (IP). The fastener (122) may be a nut home provided in the plywood, which is the upper plate of the primary insulation wall (12), and various other fastening structures or fastening methods may be used. However, the body (141) has a form that can be easily attached to and detached from the insulation structure (IP).

The insulating structure (IP) to which the handling unit (140) is attached is moved to the wall (10) through various unrestricted methods. For example, the insulating structure (IP) can be moved from a work platform (111) to another platform (110), and can also be changed in direction by the handling unit (140) to become ready for installation on the wall (10).

A lug (142) is provided in the handling unit (140). The lug (142) may be provided on one side of the body (141) and is hung by the hoist (132) described above to enable lifting of the insulating structure (IP). The worker may rotate the insulating structure (IP) 90 degrees so that the lug (142) of the handling unit (140) is placed upward, and may hang the handling unit (140) on the hoist (132) of the lifting unit (130) to enable the insulating structure (IP) to be lifted to an appropriate position on the wall (10).

Thereafter, the worker presses the insulation structure (IP) and the handling part (140) so that the mastic (15) applied to the insulation structure (IP) comes into contact with the wall (10). At this time, the mastic (15) is pressed and spread, and the insulation structure (IP) is fixedly installed on the wall (10) by the hardening of the mastic (15).

However, since the insulation structure (IP) is not fixed with only mastic (15) and can be used together with the bolts mentioned above, the worker can fix the insulation structure (IP) pressed against the wall (10) with bolts, separate the handling part (140) from the insulation structure (IP), and then allow the mastic (15) to harden naturally.

Below, another form of the handling unit (140) used in this embodiment is described. The following handling unit (140) may have a different form from the handling unit (140) in FIG. 11, but this embodiment may use two types of handling units (140) in combination.

FIG. 12 is a perspective view of a handling portion of a liquefied gas storage tank manufacturing device according to the first embodiment of the present invention, and FIGS. 13 and 14 are side views of a handling portion of a liquefied gas storage tank manufacturing device according to the first embodiment of the present invention.

Referring to FIGS. 12 to 14, the handling portion (140) includes a body (141), an extension portion (144), and a mastic protection portion (145). As described above, the body (141) can be fastened to the insulation structure (IP) through a fastener (122) provided on the inner surface of the primary insulation wall (12).

The body (141) may have a size similar to that of the primary insulation wall (12) in order to stably support the insulation structure (IP), but may have a skeletal shape to minimize the load so as not to cause inconvenience in handling. In addition, the body (141) may have a size smaller than that of the primary insulation wall (12).

The extension (144) is connected to the body (141) and has a size such that the end is misaligned in the inner and outer directions with the insulation structure (IP). As described above, the body (141) has a size that does not deviate in the inner and outer directions with the insulation structure (IP), but the extension (144) may have a size that is extended to the extent that at least a portion thereof deviates in the inner and outer directions with the secondary insulation wall (14) for the installation of the mastic protection member (145) described below.

The extension (144) may be provided on both sides of the body (141) so that one or more pairs of mastic protection members (145) may be provided for the insulation structure (IP). In addition, the extension (144) may be provided on the left and right sides of the body (141) as shown in the drawing, and/or may be provided above and below the body (141) unlike the drawing.

The mastic protection member (145) extends outward from the extension member (144) to prevent the mastic (15) from coming into contact with the wall (10) at an inappropriate location when installing the insulation structure (IP) on the wall (10). The mastic protection member (145) may have a form in which it extends in the inner and outer directions and the outer end is positioned further outward than the mastic (15).

However, the mastic protection member (145) has a shape in which the degree of protrusion in the inner and outer directions is adjusted, so that the mastic (15) can come into contact with the wall (10) when the position of the insulation structure (IP) is appropriate. To this end, the mastic protection member (145) may have a shape that penetrates the expansion member (144) and in which the degree of penetration of the expansion member (144) is adjusted. Alternatively, the mastic protection member (145) may have a telescopic shape so that the length in the inner and outer directions can be changed on its own.

The mastic protection member (145) is deformed to be relatively closer to the wall (10) than the mastic (15), thereby protecting the mastic (15) by separating it from the wall (10). That is, the mastic protection member (145) can prevent the mastic (15) from touching the wall (10) when the insulation structure (IP) is not placed at the installation location. On the other hand, when the insulation structure (IP) is properly placed at the installation location, the mastic protection member (145) is deformed to be relatively farther from the wall (10) than the mastic (15), thereby allowing the mastic (15) to touch the wall (10), thereby enabling the installation of the insulation structure (IP).

The deformation of the mastic protection part (145) can be manually performed by a worker, and the deformation state of the mastic protection part (145) can be provided so that it can be temporarily fixed. Of course, the deformation of the mastic protection part (145) can also be automatically implemented.

The body (141) may be provided with the aforementioned lug (142), and the lifting member (130) may lift the insulating structure (IP) through the lug (142), and the insulating structure (IP) suspended from the hoist (132) may also swing in the inward and outward directions. In this case, in order to prevent the insulating structure (IP) or the body (141) from colliding with the perimeter of the platform (110), a driving member (143) is provided on the inside of the body (141).

The driving part (143) protrudes inwardly from the inside of the body (141) and can prevent damage due to collision with the platform (110). For example, the driving part (143) may include a buffer member. And/or, the driving part (143) may be provided in the form of a caster to guide the movement of the body (141) when in contact with the platform (110). Therefore, the worker can intentionally adjust the lifting part (130) while the driving part (143) is in contact with the platform (110) to appropriately set the position of the insulation structure (IP).

In addition, the mastic protection part (145) may be provided with a guide wheel (146) on the outer end. The guide wheel (146) guides the movement of the insulation structure (IP) when it comes into contact with the wall (10). Therefore, the handling part (140) has a driving part (143) on the inner side and a guide wheel (146) on the outer side to facilitate the positional movement of the insulation structure (IP).

Through this, the worker can conveniently correct the position of the insulation structure (IP) that is restrained to the handling unit (140) even if it incorrectly comes into contact with the platform (110) or the wall (10). In addition, in this embodiment, the mastic (15) is not applied to the wall (10) in the incorrect position by the mastic protection unit (145) of the handling unit (140), thereby ensuring work convenience.

Furthermore, the present embodiment can apply a magnet (not shown) to a portion of the guide wheel (146) or the mastic protection member (145) that is adjacent to or in contact with the wall (10). Through this, the present embodiment can prevent the insulation structure (IP) from tilting due to the center of gravity of the insulation structure (IP) having various sizes/weights, and can also prevent the handling member (140) from falling off the wall (10), thereby increasing the convenience of lifting.

FIG. 15 is a front view of a device for manufacturing a liquefied gas storage tank according to a second embodiment of the present invention, and FIG. 16 is a front view of a lifting part of a device for manufacturing a liquefied gas storage tank according to a second embodiment of the present invention.

Below, the differences between this embodiment and the previous embodiment will be mainly explained, and any omitted parts will be replaced with the previous content.

The liquefied gas storage tank manufacturing device (100) according to the present embodiment can use a cradle (133) instead of or together with a hoist (132) for the lifting part (130). The cradle (133) is provided in a form that not only supports the insulation structure (IP), but also allows a worker to board it.

The cradle (133) may have a form supported by a rail (131) similar to the hoist (132), and may be provided so as to be able to move along the rail (131). For example, the cradle (133) may include a wheel (not shown) that moves along the rail (131), as shown in FIG. 16, and a support (not shown) that is provided so as to be able to adjust the height of the wheel.

At this time, the support may be made of a bar that can be stretched or expanded by hydraulics, or may be made of wire that can be easily adjusted in height. Accordingly, the cradle (133) can be adjusted in height up and down with respect to the rail (131).

The cradle (133) can have a support surface of a certain size to include both the worker's boarding space and the support space of the insulation structure (IP), and with the insulation structure (IP) and the worker placed on the support surface, the cradle (133) can move in directions such as up, down, left, and right to move the insulation structure (IP) to the installation position.

Once the insulation structure (IP) is placed in an appropriate position, a worker riding on the cradle (133) pushes the insulation structure (IP) into the wall (10) to install the insulation structure (IP). At this time, the outer portion of the cradle (133) may have an opening/closing form so that the insulation structure (IP) can move in and outward, and a belt (not shown) may be partially provided for stable transport of the insulation structure (IP).

For example, the cradle (133) may be closed at the outer part, and when the insulation structure (IP) is placed at the installation location, the outer part may be opened by rotation, sliding, or removal. Thereafter, the worker may push the insulation structure (IP) in the inner and outer directions so that the mastic (15) of the insulation structure (IP) comes into contact with the wall (10), and then fix the insulation structure (IP) to the wall (10) using bolts, and then move the cradle (133) to a different working location.

Thereafter, the cradle (133) is moved to a position adjacent to the mastic dispenser (200), and the insulating structure (IP) to which the mastic (15) is applied from the mastic dispenser (200) is mounted on the cradle (133), and after a worker boards the cradle (133), the insulating structure (IP) can be transported to the installation location. Through this, the present invention can significantly reduce the work time and also improve the work difficulty.

The present invention is not limited to the embodiments described above, and may include a combination of the above embodiments or a combination of at least one of the above embodiments and a known technology as another embodiment.

Although the present invention has been described in detail through specific examples, this is intended to specifically explain the present invention, and the present invention is not limited thereto, and it will be apparent that modifications or improvements can be made by those skilled in the art within the technical spirit of the present invention.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be made clear by the appended claims.

1: Liquefied gas storage tank 10: Wall
IP: Insulation Structure 11: Primary Barrier
12: Primary insulation wall 121: Connecting insulation wall
122: Fixed 13: Secondary barrier
14: Secondary insulation wall 15: Mastic
20: Dome 20a: Tank Dome
20b: Vapor Dome 30: Pump Tower
100: Liquefied gas storage tank manufacturing device
110: Platform 111: Work Platform
112: Upper platform 113: Extension
113a: inner end 113b: outer end
120: Support part 130: Lifting part
131: Rail 132: Hoist
133: Cradle 140: Handling section
141: Body 142: Lug
143: Driving section 144: Extension section
145: Mastic protection 146: Guide wheel
200: Mastic Dispenser

Claims (5)

A manufacturing device for a liquefied gas storage tank in which an insulation structure is installed on the wall forming the internal space.
A plurality of platforms installed in a multi-layer structure in the above internal space;
A support member supporting a plurality of said platforms in the height direction within said internal space; and
At least one of the above platforms comprises a lifting member provided around the perimeter adjacent to the wall,
The above lifting part,
A rail provided continuously along at least a portion of the perimeter of the platform, provided along the upper and lower portions of the platform; and
A hoist is provided that is movable along the rail and lifts the insulating structure,
A device for manufacturing a liquefied gas storage tank, wherein a plurality of hoists are provided on the rail and a plurality of hoists are connected to the insulating structure to lift the insulating structure. In paragraph 1,
The platform on which the above lifting part is provided is,
A device for manufacturing a liquefied gas storage tank, wherein an extension is provided for installation of the above rail. In the second paragraph, the extension part,
an inner end fixed to the periphery of the above platform; and
A device for manufacturing a liquefied gas storage tank, having an outer end that is connected externally to the inner end and has an adjustable position relative to the inner end. In the third paragraph, the outer end portion,
A device for manufacturing a liquefied gas storage tank, wherein the inner end portion is provided in a detachable or foldable manner. In the third paragraph, the outer end portion,
A device for manufacturing a liquefied gas storage tank, wherein the inner end portion is provided to be able to slide in an inward and outward direction.

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