KR101325699B1 - Device and method for bonding of auxiliary secondary barrier for lng storage tank - Google Patents

Abstract

A bonding apparatus and a bonding method of an auxiliary secondary barrier for a liquefied natural gas storage tank are disclosed. The joining device for the secondary secondary barrier includes: i) a frame having a first frame and a second frame whose spacing from the first frame is adjusted by the spacing adjuster; A drive unit for driving the frame corresponding to the exposed portion of the secondary barrier; (iii) an adhesive coating portion mounted on the frame and applying an adhesive over the exposed portion, and iii) a secondary secondary barrier mounted on the frame and supplied with the applied adhesive. An auxiliary secondary barrier supply.

Description

Bonding device and joining method of secondary secondary barrier for liquefied natural gas storage tank {DEVICE AND METHOD FOR BONDING OF AUXILIARY SECONDARY BARRIER FOR LNG STORAGE TANK}

The present invention relates to an apparatus and a joining method for joining auxiliary secondary barriers used in liquefied natural gas storage tanks.

Liquefied natural gas (LNG) is a colorless, transparent liquid whose volume is reduced to 1/600 by cooling natural gas, mainly methane, to -163 ° C. LNG storage tanks that store LNG are made of structures and materials that can withstand the very low temperatures of gas liquefaction.

The LNG storage tank is formed of a double hermetic structure including, for example, a primary barrier, an upper insulation board, a secondary barrier, and a lower insulation board. The primary barrier contacts the LNG to seal the LNG first. The secondary barrier serves to prevent the LNG from contacting the inner hull by sealing the leaked LNG in a secondary manner when the LNG leaks from the primary barrier.

The secondary barrier consists of the main secondary barrier and the secondary secondary barrier. The main secondary barriers are installed side by side with a gap between each other on the lower insulation board. The secondary secondary barrier is attached over the primary secondary barriers covering the gap between the primary secondary barriers between the upper insulation boards. The secondary secondary barrier can ensure the airtightness of the secondary barrier.

LNG storage tanks can be classified into flat standards, sheaths and corners. Among these, the sheath side is an area where the wall and wall of the LNG storage tank face each other, and the width between the lower insulation boards varies depending on the position. Therefore, since it is difficult to travel with the conventional secondary secondary barrier bonding apparatus, there are many difficulties in the secondary secondary barrier bonding to the side.

An object of the present invention is to provide a joining apparatus and a joining method of an auxiliary secondary barrier for a liquefied natural gas storage tank capable of easily joining an auxiliary secondary barrier on a main secondary barrier installed at the side.

Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank according to an embodiment of the present invention, a frame having a first frame and a second frame in which the interval between the first frame is adjusted by the interval adjusting unit. ; In the liquefied natural gas storage tank comprising a lower insulation board, a main secondary barrier, and an upper insulation board, which is partially mounted on the frame and is sequentially stacked between the inner hull and the primary barrier, a flat standard part and a predetermined inclination angle A driving unit for driving the frame in response to the exposed portions of the main secondary barrier spaced apart from each other by being exposed between the upper insulating boards adjacent to the sheath side where the corner portions having a corner portion; An adhesive applicator mounted on the frame and applying an adhesive over the exposed part; And an auxiliary secondary barrier supply unit mounted to the frame and supplying an auxiliary secondary barrier over the applied adhesive.

The gap adjusting unit may include: a third frame having one end fixed to the first frame and the other end penetrating the second frame; And a locking member fixed to an outer side of the second frame and coupled to an end of the third frame.

The locking member may include a support fixed to the second frame; A tightening member connected to the support and forming an opening surrounding the third frame and a separation space connected to the opening; And a fastening bolt fastened to the fastening member to cross the separation space.

The driving unit may include a first guide rail installed on the upper insulation board at the corner portion; And a second guide rail installed on the upper insulation board in the standard part, and the first guide rail and the second guide rail may be disposed at both sides of the exposed part at the sheath side.

In the corner portion, the upper insulation board may include a corner member having a plurality of corner bolts fixed thereto, and the first guide rail may have a plurality of cutouts accommodating the plurality of corner bolts at one end thereof along a width direction. have.

The drive unit may include a rack gear installed at each of the first guide rail and the second guide rail; A pinion gear meshing with the rack gear; And a motor for rotating the pinion gear, wherein the motor and the pinion gear may be installed in the frame.

The first guide rail and the second guide rail include an inclined portion exposed to a space between the upper insulation board of the corner portion and the upper insulation board of the standard portion, and the driving portion is engaged with the inclined portion to frame the frame. It may include a close contact in close contact with the upper insulation board.

The inclined portion includes a first inclined surface facing the exposed portion and a second inclined surface facing away from the exposed portion, and the close contact portion includes a pair of guide wheels rolling in contact with the first inclined surface and the second inclined surface; A support for supporting the pair of guide wheels in a rotatable state; And a first pressurizing part configured to press the support part toward the first guide rail and the second guide rail.

And a heater installed in front of the adhesive applying part in the frame, and the heater maintains a spaced state from the exposed part and heats the exposed part in any one or more forms of conduction, convection, and radiant heat.

The heater may include any one of a hot plate connected to a third pressurizing unit and a hot air nozzle connected to a blower to receive hot air.

The adhesive applicator may include a cartridge including a main cartridge and a curing agent cartridge; A pressing unit for compressing the cartridge to discharge the main body and the hardener embedded in the cartridge out of the cartridge; Mixing unit for receiving the main body and the curing agent from the cartridge and mixing; And a nozzle unit for discharging the main body and the hardener mixed in the mixing unit to the exposed part.

The exposed portions are spaced apart at a first interval, and the main cartridge, the curing agent cartridge, the mixing portion, and the nozzle portion are provided in pairs to simultaneously apply an adhesive onto both exposed portions spaced apart at the first interval. can do.

A part of the mixing part may be made of a flexible material to change the spacing of the nozzle parts provided in a pair.

The adhesive applying unit includes a heating unit for heating a main body and a curing agent, wherein the heating unit includes: a first heating unit mounted on an outer surface of each of the cartridges, a second heating unit mounted on an inner side of a cartridge accommodating unit accommodating the cartridge; It may include at least one of the third heating unit mounted to the mixing unit.

The auxiliary secondary barrier supply unit includes a central shaft member wound around the auxiliary secondary barrier in the form of a roll, and further comprises a protective sheet cartridge wound in the form of a roll of a protective sheet capable of covering the edge of the auxiliary secondary barrier and the outside thereof. It may include.

The frame may further include a tension adjusting unit and a guide roller unit installed between the adhesive applying unit and the auxiliary secondary barrier supply unit.

The tension adjusting unit may further include a pressure roller installed at the lower rear.

The tension adjusting part includes a first tension roller and a second tension roller that can adjust the distance between each other, and the guide roller part is located in front of the tension adjusting part and has a plurality of rollers arranged in an arc shape at a predetermined distance from each other. It includes, the first tension roller and the second tension roller and the plurality of rollers may be of a variable length.

Each of the first tension roller, the second tension roller, and the plurality of rollers may include an inner roller; And a pair of outer rollers that form an inner space for accommodating the inner rollers and are slidingly coupled to the inner rollers along an axial direction.

The pressure roller unit may include a first pressure roller and a second pressure roller disposed at left and right sides of the auxiliary secondary barrier, respectively; A first pressing part coupled to the first pressing roller and fixed to the first frame; And a second pressing unit coupled to the second pressing roller and fixed to the second frame.

According to another embodiment of the present invention, a method of joining an auxiliary secondary barrier using a bonding apparatus of an auxiliary secondary barrier for a liquefied natural gas storage tank may include adjusting a width of a frame corresponding to a width of a side portion on which the bonding apparatus is to travel. Adjusting the first step; A second step of heating the exposed portion of the primary secondary barrier to which the adhesive is to be applied to provide the heat necessary for curing the adhesive; A third step of heating the adhesive by applying an adhesive over the heated exposed portion; Providing a secondary secondary barrier over the adhesive, and pressurizing the secondary secondary barrier to attach the secondary secondary barrier over the exposed portion.

In the second step, a heater may be used to maintain the spaced state with the exposed portion and heat the exposed portion in any one or more forms of conduction, convection, and radiant heat.

In the third step, the adhesive may be applied in a heated state by the adhesive applying unit having a heating unit.

Since the width of the frame can be adjusted to correspond to the width of the sheath, the secondary secondary barrier can be easily bonded at the sheath having various widths. In addition, the adhesive discharged from the adhesive coating unit receives heat from the primary secondary barrier after the discharge, and is heated above the curing temperature. A secondary secondary barrier can be provided over this adhesive and then pressure can be applied to firmly bond the secondary secondary barrier over the primary secondary barrier.

1 is a perspective view showing a bonding apparatus of an auxiliary secondary barrier for an LNG storage tank according to an embodiment of the present invention.
2 is a flow chart showing a bonding method of the secondary secondary barrier for the LNG storage tank according to an embodiment of the present invention.
FIG. 3 is a schematic plan view of a frame of the bonding device for the auxiliary secondary barrier shown in FIG. 1. FIG.
4 is a partially enlarged perspective view of the frame illustrated in FIG. 3A.
FIG. 5 is a partial cross-sectional view showing an LNG storage tank and a driving unit in the bonding apparatus shown in FIG. 1.
FIG. 6 is a partially cutaway perspective view of the first guide rail illustrated in FIG. 5.
FIG. 7 is a partially cutaway perspective view of the second guide rail illustrated in FIG. 5.
FIG. 8 is an enlarged view of the second guide rail and the close contact portion illustrated in FIG. 5.
FIG. 9 is a partial cross-sectional view showing a LNG storage tank and a heater in the bonding apparatus shown in FIG. 1.
10 is a partial cross-sectional view showing an LNG storage tank and a heater for explaining a modification of the heater.
It is a perspective view of the adhesive agent coating part of the bonding apparatus shown in FIG.
12 is a cross-sectional view of the adhesive applying part cut along the line AA of FIG. 11.
It is a schematic top view which shows a part of adhesive agent application part shown in FIG.
FIG. 14 is a partial cross-sectional view showing a part of the adhesive coating portion of the LNG storage tank and the bonding apparatus shown in FIG. 1.
FIG. 15 is a partial side view of the bonding apparatus shown in FIG. 1. FIG.
FIG. 16 is a partial cross-sectional view of an LNG storage tank showing a secondary secondary barrier and a protective sheet provided over an adhesive-coated exposed portion. FIG.
It is a schematic sectional drawing of the 1st tension roller among the bonding apparatus shown in FIG.
FIG. 18 is a front view of the pressure roller part in the bonding apparatus shown in FIG. 1. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

1 is a perspective view showing a bonding device (hereinafter referred to as "bonding device" for convenience) of the secondary secondary barrier for the liquefied natural gas (LNG) storage tank according to an embodiment of the present invention.

Referring to FIG. 1, the bonding apparatus 100 of this embodiment includes a variable frame 10, a driving unit 20, a heater 30, an adhesive applying unit 40, and an auxiliary secondary barrier supply unit 50. do. A part of the driving unit 20, the heater 30, the bonding body applying unit 40, and the auxiliary secondary barrier supply unit 50 are all mounted on the frame 10.

The frame 10 includes a first frame 11 and a second frame 12 whose spacing from the first frame 10 is adjusted by a gap adjuster (not shown). The heater 30 heats the exposed portion of the main secondary barrier to which the adhesive is to be applied, and the adhesive applying portion 40 applies the adhesive to the exposed portion of the heated primary secondary barrier. The secondary secondary barrier supply unit 50 supplies the secondary secondary barrier over the adhesive so that the secondary secondary barrier is bonded onto the primary secondary barrier. In this case, the adhesive applying unit 40 may include a heating unit 47 for heating the embedded adhesive.

FIG. 2 is a process flowchart illustrating a bonding method (hereinafter, referred to as a “bonding method” for convenience) of an auxiliary secondary barrier for an LNG storage tank according to an exemplary embodiment of the present invention. The bonding method of this embodiment includes the following steps so that the secondary secondary barrier can be bonded onto the primary secondary barrier located at the side using the bonding apparatus 100 shown in FIG.

Referring to FIG. 2, in the bonding method of the present embodiment, the first step S10 of adjusting the width of the frame 10 corresponding to the width of the sheath side on which the bonding device 100 is to travel, and the exposure of the primary secondary barrier A second step (S20) of heating the part to provide the heat necessary for curing the adhesive, a third step (S30) of applying the adhesive over the heated exposed part, and providing a secondary secondary barrier over the adhesive and then a secondary secondary barrier And pressing a fourth step (S40) to attach the secondary secondary barrier on the exposed portion.

In the third step S30, the adhesive may be applied in a heated state by the heating unit 47 mounted on the adhesive applying unit 40.

3 is a schematic plan view of the frame 10 in the bonding apparatus 100 shown in FIG. 1, and FIG. 4 is a partially enlarged perspective view of the frame 10 shown in FIG. 3.

3 and 4, the variable width frame 10 includes a first frame 11, a second frame 12 parallel to the first frame 11, a first frame 11, and a second frame. It is provided between the (12) includes a gap adjusting unit 13 for adjusting the interval of the second frame 12 with respect to the first frame (11).

The interval adjusting part 13 includes a plurality of third frames 14 having one end fixed to the first frame 11 and the other end penetrating the second frame 12, and fixed to the outside of the second frame 12. And a locking member 15 engaged with the end of the third frame 14. The second frame 12 forms a plurality of holes for penetrating the third frame 14.

The locking member 15 includes a support 16 fixed to the second frame 12, an opening 171 connected to the support 16 and surrounding the third frame 14, and a separation space connected to the opening 171. The fastening member 17 forming the 172 and a fastening bolt 18 fastened to the fastening member 17 to cross the separation space 172 may be included.

When the fastening bolt 18 is fastened to the fastening member 17 after setting the position of the second frame 12 with respect to the first frame 11 in a state where the fastening bolt 18 is removed, the space 172 is separated. The tightening member tightly tightens the third frame 14 as the width of the cross section decreases. As a result, the position of the second frame 12 can be fixed.

5 is a partial cross-sectional view showing the LNG storage tank and the drive unit 20 of the bonding apparatus 100 shown in FIG. 1. Referring to FIG. 5, the LNG storage tank includes a lower insulation board 81, a main secondary barrier 82, an upper insulation board 83, and a primary barrier 84 sequentially stacked on the inner hull. .

The lower insulation board 81 is composed of a lower insulation member protection plate 811 fixed to an inner hull (not shown), and a lower insulation member 812 attached to the lower insulation member protection plate 811. The upper insulation board 83 is composed of an upper insulation member 831 attached to the main secondary barrier 82, and an upper insulation member protection plate 832 attached to the upper insulation member 831.

The upper insulation member 831 and the lower insulation member 812 are formed of a material having excellent insulation, for example, polyurethane foam, to provide insulation between the inner hull and LNG. The upper insulation member protection plate 832 and the lower insulation member protection plate 811 may be formed of plywood, and provide mechanical rigidity to the upper and lower insulation boards 83 and 81.

The primary secondary barrier 82 and the secondary secondary barrier (not shown) may be formed of a metal composite laminate with metal foil attached to both sides of a glass-fiber composite. The primary barrier 84 may be formed of a metal material of low temperature brittleness such as aluminum alloy, Invar, 9% nickel steel, stainless steel sheet. The primary barrier 84 is not provided at the joining stage of the secondary secondary barrier, but is shown in dashed lines to explain the structure of the LNG storage tank.

The lower insulation board 81 is made of a set area and is disposed at a distance G1 from each other in the inner hull. The primary secondary barrier 82 is attached to the upper surface of the lower insulation board 81 and constitutes a secondary barrier together with an auxiliary secondary barrier (not shown). The primary secondary barriers 82 are also arranged side by side with the same distance as the separation distance (G1) of the lower insulating board (81).

The LNG storage tank includes a flat standard portion 110, a corner portion 130 having a predetermined inclination angle, and a sheath portion 120 positioned between the standard portion 110 and the corner portion 130. A corner member 834 made of steel having a corner bolt 833 is attached to the upper insulation member 831 positioned at the corner portion 130 instead of the upper insulation member protection plate.

The filling member 85 may be positioned between the lower insulation boards 81 corresponding to the sheath side 120. The filling member 85 may have a variable width according to the separation distance G1. The sheath side 120 is a portion in which the distance G1 of the lower insulation board 81 varies according to the position, and the interval of the main secondary barriers 82 also varies.

The primary secondary barrier 82 is a surface exposed outward along the edges of the upper insulating member protection plate 832 of the standard portion 110 and the corner member 834 of the corner portion 130 (hereinafter referred to as “exposed portion 821). Form ”. 3 and 4, the interval between the first frame 11 and the second frame 12 is adjusted to correspond to the width of the sheath side portion 120, so that the bonding apparatus 100 of the present embodiment has various widths. It can easily travel on the side surface 120 of the.

Referring to FIG. 5 again, the driving unit 20 of the bonding apparatus 100 runs on the frame 10 in correspondence with the exposed portion 821 on the upper insulation board 83 of the standard portion 110 and the corner portion 130. Let's do it. In order to drive the frame 10, the driving unit 20 may include a first guide rail 21 installed at an edge of the corner member 834 and an edge of an upper insulating member protection plate 832 of the standard unit 110. 2 includes a guide rail (22).

FIG. 6 is a partially cutaway perspective view of the first guide rail 21 shown in FIG. 5.

5 and 6, a corner bolt 833 is fixed to the corner member 834. The first guide rail 21 forms a plurality of cutouts 211 that accommodate the corner bolts 833 at one end thereof. The cutouts 211 are arranged side by side with a distance from each other, and are formed long along the width direction of the first guide rail 21.

The first guide rail 21 is firmly mounted on the corner member 834 with the nut 212 tightened to the corner bolt 833 after the corner bolt 833 is fitted over the corner member 834 so as to penetrate the cutout 211. Is fixed. Since the position of the corner bolt 833 and the nut 212 can be adjusted along the longitudinal direction of the cutout 211, the first guide rail 21 on the corner member 834 regardless of the position of the corner bolt 833. Can be easily installed.

FIG. 7 is a partially cutaway perspective view of the second guide rail 22 shown in FIG. 5. 5 to 7, the first and second guide rails 21 and 22 are provided in pairs on the left and right sides of the exposed part 821 and have a cross-sectional shape of an arrow shape.

For example, the first and second guide rails 21 and 22 are connected to the flat portions 213 and 223 disposed on the upper insulation board 83 and the edges of the flat portions 213 and 223, respectively. And the inclined portions 214 and 224 exposed to the space between the 83 and the rack gears 215 and 225 fixed on the flat portions 213 and 223.

The flat part 223 of the second guide rail 22 is fixed to the upper surface of the upper insulating member protection plate 832 by fixing means such as a bolt. The rack gears 215 and 225 form a gear surface on one surface facing the inclined portions 214 and 224, and engage with the pinion gear 23 included in the driving unit 20 to guide the driving path of the frame 10. Do it.

The inclined portions 214 and 224 include first inclined surfaces 214a and 224a positioned toward the exposed portion 821, and second inclined surfaces 214b and 224b positioned in a direction away from the exposed portion 821. . The first inclined surfaces 214a and 224a and the second inclined surfaces 214b and 224b may have an inclination angle of about 45 degrees with respect to the direction parallel to the exposed portion 821. The inclined parts 214 and 224 are engaged with the close contact part 25 included in the driving part 20 so that the bonding device 100 is firmly in close contact with the upper insulation board 83.

The drive unit 20 of the bonding apparatus 100 includes a motor 24, a pinion gear 23, and a close contact portion 25. The motor 24 and the pinion gear 23 are provided in pairs and installed in the first frame 11 and the second frame 12, respectively. The pinion gear 23 meshes with the rack gears 215 and 225, and rotates with the power of the motor 24 to extend the longitudinal direction of the rack gears 215 and 225, that is, the first and second guide rails 21 and 22. The frame 10 is driven along the longitudinal direction.

FIG. 8 is an enlarged view of the second guide rail 22 and the close contact portion 25 shown in FIG. 5.

5 and 8, the close contact portion 25 may rotate the pair of guide wheels 251 and the guide wheels 251 that roll in contact with the first inclined surface 224a and the second inclined surface 224b. And a first pressing part 253 connected to the supporting part 252 to press the supporting part 252 toward the second guide rail 22.

The first pressing unit 253 may be a hydraulic cylinder and may be fixed to any one third frame 14. Although not shown, the first pressing part 253 may be movably fixed to the third frame 14 according to the distance between the adjacent upper insulating boards 83. In addition, the first pressing unit 253 may be configured to move in the width direction of the secondary secondary barrier 87 in accordance with the interval between the adjacent upper insulating board (83). The close contact portion 25 coupled to the first guide rail 21 in FIG. 5 also has the same structure as the close contact portion 25 shown in FIG. 8.

In the bonding apparatus 100 of the present embodiment, the driving unit 20 operates by a simple structure of the motor 24 and the pinion gear 23, thereby facilitating the fabrication of the device. In addition, as the driving unit 20 includes the close contact portion 25, the bonding apparatus 100 moves firmly in close contact with the upper insulation board 83. Therefore, the bonding apparatus 100 is firmly adhered to the upper insulation board 83 without being separated from the upper insulation board 83 even at a portion corresponding to the inner wall or the ceiling of the LNG storage tank.

That is, the bonding apparatus 100 runs in an inclined state by approximately 90 degrees in the upper insulation board 83 corresponding to the inner wall of the LNG storage tank, and the bonding apparatus 100 in the upper insulation board 83 corresponding to the ceiling is You will run 180 degrees upside down. Even in such a state, the bonding apparatus 100 is firmly adhered to the upper insulation board 83 by the inclination parts 214 and 224 and the close contact part 25 of the first and second guide rails 21 and 22. It can be easily driven.

Next, the heater 30 of the bonding apparatus 100 is demonstrated. FIG. 9 is a partial cross-sectional view showing the LNG storage tank and the heater 30 in the bonding apparatus 100 shown in FIG. 1.

1 and 9, the heater 30 is located at the foremost of the frame 10 along the driving direction of the bonding apparatus 100. Next, an adhesive applying unit 40 for applying an adhesive to the exposed portion 821 is positioned next to the heater 30.

The heater 30 heats the exposed portion 821 to which the adhesive is to be applied, and the adhesive applying portion 40 applies the adhesive over the heated primary secondary barrier 82. The heater 30 thus provides sufficient heat to cure the adhesive before the secondary secondary barrier is provided over the adhesive, thereby improving the bonding quality of the secondary secondary barrier.

The heater 30 does not contact the exposed portion 821 so as not to damage the main secondary barrier 82, and heats the exposed portion 821 in any one or more forms of conduction, convection, and radiant heat.

The heater 30 may include, for example, a heating plate 31 and a third pressing unit 32 for adjusting the height of the heating plate 31. The heating plate 31 and the third pressing part 32 are fixed to any one third frame 14. The heating plate 31 is positioned above the exposed portion 821 at a predetermined distance to provide heat to the exposed portion 821.

Although one heating plate 31 is illustrated in FIG. 9, the number of heating plates 31 is not limited to the illustrated example. For example, two heating plates may be separately disposed at a predetermined distance corresponding to the separation distance G1 of the primary secondary barrier 82, and a plurality of heating plates may be disposed along the traveling direction of the bonding apparatus 100. It may be.

FIG. 10 is a partial cross-sectional view showing an LNG storage tank and a heater 301 for explaining a modification of the heater 30 shown in FIG. 9.

Referring to FIG. 10, the heater 301 may include a hot air nozzle 33 for discharging hot air, and a blower 34 having a heating unit therein. The hot air nozzle 33 may be provided in plurality, and receives the hot air from the blower 34 and discharges it to the exposed part 821. The hot air nozzle 33 is also positioned above the exposure portion 821 at a predetermined distance.

8 and 9, the heaters 30 and 301 including the heating plate 31 and the hot air nozzle 33 have been described, but the heaters 30 and 301 are not limited to the above-described example. That is, the heaters 30 and 301 may be applied to any structure that can heat the exposed portion 821 in any one or more of conductive, convective and radiant heat.

Next, the adhesive agent application part 40 of the bonding apparatus 100 is demonstrated.

FIG. 11: is a perspective view of the adhesive agent application part 40 of the bonding apparatus 100 shown in FIG. 1, and FIG. 12 is sectional drawing of the adhesive agent application part 40 cut along the line A-A of FIG. FIG. 13 is a schematic plan view showing a part of the adhesive applying unit 40 shown in FIG. 1, and FIG. 14 shows a portion of the adhesive applying unit 40 of the LNG storage tank and the bonding apparatus 100 shown in FIG. 1. It is a partial cross section.

1 and 11 to 14, the adhesive applying part 40 includes a cartridge 41, a pressing part 42, a mixing part 43, a nozzle part 44, and a heating part 47. do.

The cartridge 41 includes main cartridges 411a and 411b incorporating a main body, and hardener cartridges 412a and 412b incorporating a curing agent. The pressing unit 42 compresses the cartridge 41 to discharge the main body and the hardener contained in the cartridge 41 out of the cartridge 41. The mixing part 43 receives the main body and the curing agent and mixes the mixed part, and the nozzle part 44 discharges the mixed two-component adhesive L to the exposed part 821.

The main cartridges 411a and 411b, the hardener cartridges 412a and 412b, the mixing part 43, and the nozzle part 44 may be provided in pairs. Therefore, the adhesive applying unit 40 may apply the adhesive (L) in one application step on the exposed portion 821 on both sides facing the separation distance (G1).

For example, the main cartridges 411a and 411b include a first main cartridge 411a and a second main cartridge 411b, and the hardener cartridges 412a and 412b include the first hardener cartridge 412a and the second hardener. Cartridge 412b.

The first main cartridge 411a and the first hardener cartridge 412a each contain a main and a hardener to be applied to the exposed portion 821 of the one main secondary barrier 82. The second main cartridge 411b and the second hardener cartridge 412b each contain a main and a hardener to be applied to the exposed portion 821 of the other main secondary barrier 82.

On the other hand, the main cartridges 411a and 411b and the hardener cartridges 412a and 412b may be integrally provided to simultaneously supply the main and hardeners to the primary secondary barrier exposed portions 821 on both sides (not shown). In both cases, the cartridge 41 is fixedly mounted inside the cartridge receiving portion 45.

The pressurizing portion 42 includes a piston 421, a rod 422, a moving member 423, a lead screw 424, and a drive motor 425. The piston 421 and the rod 422 are inserted into the cartridge 41 on one side of the cartridge 41 and are arranged to press the cartridge 41 inside. The piston 421 and the rod 422 are provided in plural and are installed in the first and second main cartridges 411a and 411b and the first and second hardener cartridges 412a and 412b, respectively.

The moving member 423 is integrally connected with the plurality of rods 422 to operate the plurality of pistons 421 in the same manner. The lead screw 424 is screwed to the moving member 423 and rotatably mounted to the cartridge receiving portion 45 at one end. When the lead screw 424 rotates at one position of the cartridge receiving portion 45, the moving member 423 presses the plurality of pistons 421 simultaneously while linearly moving on the lead screw 424.

The drive motor 425 is connected with the lead screw 424 to provide rotational force to the lead screw 424. The drive motor 425 may be fixed to the cartridge receiving portion 45 by the bracket 46. The drive motor 425 and the lead screw 424 can be replaced with a hydraulic cylinder (not shown) connected to the moving member 423.

The mixing part 43 is configured to mix the main material and the hardener supplied from the main cartridges 411a and 411b and the hardener cartridges 412a and 412b to the nozzle part 44. The mixing part 43 may be composed of a static mixer which connects the discharge cartridges of the main cartridges 411a and 411b and the hardener cartridges 412a and 412b to the nozzle part 44.

For example, the mixing part 43 includes a first static mixer 431 and a second static mixer 432, and the nozzle part 44 is connected to the first and second static mixers 431 and 432, respectively. And a first nozzle 441 and a second nozzle 442.

The first static mixer 431 is connected to the first main cartridge 411a and the first hardener cartridge 412a, and mixes the main and hardeners supplied therefrom to the first nozzle 441. The second static mixer 432 is connected to the second main cartridge 411b and the second hardener cartridge 412b, and mixes the main and hardeners supplied therefrom to the second nozzle 442.

The first and second static mixers 431 and 432 have a screw 434 inside the pipe 433 to mix the main material and the hardener while forcing the main material and the hardener between the pipe 433 and the screw 434.

The first nozzle 441 and the second nozzle 442 are installed in an inclined state with respect to the exposed part 821, and have a structure in which discharge holes are gradually expanded from the first and second static mixers 431 and 432. Can be. In this case, the adhesive (L) can be widely applied, and the thickness of the adhesive (L) can be easily adjusted.

In this case, end portions of the first and second static mixers 431 and 432 may be made of a flexible material to vary the distance between the first nozzle 441 and the second nozzle 442. Accordingly, the positions of the first and second nozzles 441 and 442 may be adjusted in response to the change of the separation distance G1 of the primary secondary barrier 82. The cartridge 41 and the pressurizing portion 42 and the mixing portion 43 described above may replace the heavy weight dispenser used in the prior art.

The heating part 47 is installed to at least one of the cartridge 41 and the mixing part 43 so as to heat the adhesive L. In other words, the heating unit 47 is configured to heat the main body and the curing agent, or to heat the mixed main body and the curing agent.

For example, the heating unit 47 may include at least one of the first heating unit 471, the second heating unit 472, and the third heating unit 473. For convenience, in the present embodiment, the heating part 47 includes all of the first to third heating parts 471, 472, and 473.

The first heating unit 471 is mounted on the outer surface of each cartridge 41 to heat the main body and the curing agent for each cartridge 41. The second heating part 472 is mounted inside the cartridge accommodating part 45 for accommodating the cartridge 41 to collectively heat the main body and the curing agent in the cartridge 41. The third heating unit 473 is mounted to the outside of the first and second static mixers 431 and 432 constituting the mixing unit 43 to heat the mixing base and the curing agent or the mixing base and the curing agent.

Since the first to third heating units 471, 472, and 473 may be independently controlled, one or two of the three may be selectively driven or all three may be driven. These driving conditions can be set in various ways depending on the degree of heating required for the subject and the curing agent.

When the first heating unit 471 and the second heating unit 472 operate to heat the main body and the curing agent, the heating is performed below the phase separation temperature of the main body and the curing agent. On the other hand, when the third heating unit 473 operates to mix and heat the main body and the curing agent, the third heating unit 473 is heated above the curing temperature of the adhesive.

Therefore, due to the heating of the main secondary barrier 82 by the heater 30 and the heating of the adhesive L itself using the heating part 47, the adhesive L may have a sufficient amount of heat before contacting the secondary secondary barrier. It can be secured.

FIG. 15 is a partial side view of the bonding apparatus 100 shown in FIG. 1, and FIG. 16 shows the secondary secondary barrier 87 and the secondary secondary barrier 87 over the exposed portion 821 of the primary secondary barrier 82 to which the adhesive L is applied. A partial sectional view of the LNG storage tank showing a state where the protective sheet 88 is provided.

1, 15, and 16, the bonding apparatus 100 includes an auxiliary secondary barrier supply unit 50, a tension adjusting unit 55, a protective sheet cartridge 60, and a guide roller installed in the frame 10. The part 65 and the pressure roller part 70 are included.

The secondary secondary barrier supply unit 50 includes a central shaft member 51 wound around the secondary secondary barrier 87 in a roll form. The central shaft member 51 is attached to the first and second frames 11 and 12 by a bearing to sequentially release the auxiliary secondary barrier 87 in accordance with rotation.

The auxiliary secondary barrier supply unit 50 is prepared in various specifications with different lengths of the central shaft member 51, and the auxiliary 2 suitable for the corresponding interval according to the change in the interval between the first frame 11 and the second frame 12. The vehicle barrier supply unit 50 is optionally mounted to the frame 10. As the length of the central shaft member 51 changes, the secondary secondary barrier 87 wound around the central shaft member 51 is also formed in another width.

The tension adjusting unit 55 includes a first tension roller 56 and a second tension roller 57 that can adjust the distance between each other. A secondary secondary barrier 87, released from the central axis member 51, is provided between the first and second tension rollers 56, 57. The tension adjusting unit 55 functions to apply tension to the secondary secondary barrier 87 so that the secondary secondary barrier 87 is temporarily restrained and guided while being tensioned and supplied.

The protective sheet cartridge 60 includes a roll holder 61 wound around the protective sheet 88 in a roll form. As the roll holder 61 rotates, the protective sheet 88 is sequentially released. The protective sheet 88 covers the edge of the auxiliary secondary barrier 87 and the outside thereof to serve to trap the adhesive L when the adhesive L pressed by the pressure spreads sideways. One protective sheet cartridge 60 is provided in each of the first frame 11 and the second frame 12.

The guide roller portion 65 is located in front of the protective sheet cartridge 60. The guide roller portion 65 is composed of a plurality of rollers 651 arranged in an arc shape at a distance from each other. The fourth frame 19 fixed to the first and second frames 11 and 12 may support both ends of the guide roller part 65. The secondary secondary barrier 87 passed between the first and second tension rollers 56 and 57 is wound around the guide roller portion 65 and provided to the pressure roller portion 70.

The 1st and 2nd tension rollers 56 and 57 which comprise the tension control part 55, and the some roller 651 which comprises the guide roller part 65 are comprised in variable length. 17 is a schematic cross-sectional view of the first tension roller 56 of the bonding apparatus 100 shown in FIG. 1. The second tension roller 57 and the plurality of rollers 561 also have the same structure as the first tension roller 56 shown in FIG.

Referring to FIG. 17, the first tension roller 56 forms an inner roller 561 and an inner space s for accommodating the inner roller 561, respectively, on the first and second frames 11 and 12. It includes a pair of outer rollers 562 that are coupled. The pair of outer rollers 562 are slidably coupled along the axial direction outside the inner roller 561. Therefore, as the distance between the pair of outer rollers 562 is changed according to the change in the gap between the first and second frames 11 and 12, the length of the first tension roller 56 is changed.

FIG. 18 is a front view of the pressure roller part 70 in the bonding apparatus 100 shown in FIG. 1.

Referring to FIGS. 1 and 18, the pressure roller part 70 includes a first pressure roller 71 and a second pressure roller 72 disposed at left and right sides of the auxiliary secondary barrier 87, respectively. The auxiliary secondary barrier 87 wound around the guide roller portion 65 is pressed by the first pressure roller 71 and the second pressure roller 72. One or more first and second pressure rollers 71 and 72 may be provided along the longitudinal direction of the secondary secondary barrier 87.

The first and second pressure rollers 71 and 72 are coupled to the second pressure parts 73 and 74, respectively, and the second pressure parts 73 and 74 are connected to the first frame 11 and the second frame 12. Are fixed to each. Since the distance between the second pressing parts 73 and 74 changes according to the adjustment of the distance between the first frame 11 and the second frame 12, the distance between the first and second pressing rollers 71 and 72 also varies.

The pressure roller part 70 applies a pressure to the secondary secondary barrier 87 and the adhesive L to firmly bond the secondary secondary barrier 87 onto the exposed portion 821 to which the adhesive L is applied. do. The second pressing portion 73 may be, for example, a hydraulic cylinder.

According to the bonding apparatus 100 and the bonding method of the present embodiment, since the distance between the first frame 11 and the second frame 12 may be adjusted in correspondence to the width of the sheath portion 120, the sheath portion having various widths ( The secondary secondary barrier 87 can be easily joined at 120.

Then, the heater 30 is preheated to the exposed portion 821 to which the adhesive is to be applied to provide sufficient heat for curing the adhesive. Therefore, the adhesive discharged from the adhesive applying unit 40 receives heat from the exposed portion 821 after the discharge and is heated above the curing temperature. Moreover, the adhesive L can be apply | coated in the heated state using the heating part 47 attached to the adhesive application part 40. FIG.

The provision of the secondary secondary barrier 87 over this adhesive L allows the secondary secondary barrier 87 to be firmly adhered onto the primary secondary barrier 82 only by applying pressure to the secondary secondary barrier 87. have. Thus, the bonding apparatus 100 need not be provided with a heated skateboard or hot pad that heats the secondary secondary barrier 87.

The joining device of the auxiliary secondary barrier for the liquefied natural gas storage tank according to the embodiment of the present invention, LNG as well as liquefied natural gas storage tank installed in a self-propelled LNG carrier or LNG Regasification Vessel (RV) vessel, LNG It can be applied to liquefied natural gas storage tanks installed in floating offshore structures such as Floating, Production, Storage and Offloading (FPSO) or LNG Floating Storage Regasification Unit (FSRU).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

100: secondary secondary barrier bonding device 10: frame
11: first frame 12: second frame
13: spacing adjuster 15: locking member
20: drive unit 21: first guide rail
22: 2nd guide rail 25: adhesion part
30, 301: heater 40: adhesive coating part
50: secondary secondary barrier supply unit 55: tension control unit
60: protective sheet cartridge 65: guide roller portion
70: pressure roller portion

Claims (23)

A frame having a first frame and a second frame in which an interval between the first frame is adjusted by a gap adjusting unit;
In the liquefied natural gas storage tank comprising a lower insulation board, a main secondary barrier, and an upper insulation board, which is partially mounted on the frame and is sequentially stacked between the inner hull and the primary barrier, a flat standard portion and a predetermined inclination angle A driving unit for driving the frame in response to the exposed portions of the main secondary barrier spaced apart from each other by being exposed between the upper insulating boards adjacent to the sheath side where the corner portions having a corner portion;
A heater installed at the frame to heat the exposed part;
An adhesive applicator mounted on the rear of the heater in the frame and applying an adhesive over the imaginary exposed part heated by the heater; And
A secondary secondary barrier supply unit mounted to the frame and supplying a secondary secondary barrier over the applied adhesive.
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
The method of claim 1,
Wherein the interval adjusting unit comprises:
A third frame having one end fixed to the first frame and the other end passing through the second frame; And
A locking member fixed to an outer side of the second frame and engaged with an end of the third frame
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
3. The method of claim 2,
Wherein,
A support fixed to the second frame;
A tightening member connected to the support and forming an opening surrounding the third frame and a separation space connected to the opening; And
Fastening bolt fastened to the fastening member to cross the separation space
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
The method of claim 1,
The driving unit includes:
A first guide rail installed on the upper insulation board at the corner portion; And
A second guide rail installed on the upper insulation board in the standard part,
And the first guide rail and the second guide rail are disposed at both sides of the exposed portion at the sheath side and are bonded to the auxiliary secondary barrier for the liquefied natural gas storage tank.
5. The method of claim 4,
The upper insulation board in the corner portion includes a corner member is fixed a plurality of corner bolts,
The first guide rail is a joining device of a secondary secondary barrier for a liquefied natural gas storage tank, characterized in that a plurality of cutouts for accommodating the plurality of corner bolts at one end thereof are formed along the width direction.
5. The method of claim 4,
The driving unit includes:
Rack gears respectively installed on the first guide rail and the second guide rail;
A pinion gear meshing with the rack gear; And
A motor for rotating the pinion gear,
The motor and the pinion gear is bonded to the secondary secondary barrier for liquefied natural gas storage tank, characterized in that installed in the frame.
The method according to claim 6,
The first guide rail and the second guide rail includes an inclined portion exposed to a space between the upper insulation board of the corner portion and the upper insulation board of the standard portion,
And the driving part is in contact with the inclined part to contact the frame with the upper insulating board.
The method of claim 7, wherein
The inclined portion includes a first inclined surface facing the exposed portion and a second inclined surface facing away from the exposed portion,
The tight-
A pair of guide wheels rolling in contact with the first inclined surface and the second inclined surface;
A support for supporting the pair of guide wheels in a rotatable state; And
A first pressurizing part which presses the support part toward the first guide rail and the second guide rail;
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
The method of claim 1,
The heater maintains a spaced state from the exposed portion, the secondary device of the secondary barrier wall bonding apparatus for liquefied natural gas storage tank, characterized in that for heating the exposed portion in any one or more forms of conduction, convection and radiant heat.
10. The method of claim 9,
The heater is a bonding apparatus of the secondary secondary barrier for the liquefied natural gas storage tank comprising a heating plate connected to the third pressure unit, and any one of the hot air nozzle connected to the blower to receive the hot air.
The method of claim 1,
The adhesive-
A cartridge comprising a main cartridge and a curing agent cartridge;
A pressing unit for compressing the cartridge to discharge the main body and the hardener embedded in the cartridge out of the cartridge;
Mixing unit for receiving the main body and the curing agent from the cartridge and mixing; And
A nozzle unit for discharging the main body and the hardener mixed in the mixing unit to the exposed portion
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
12. The method of claim 11,
The exposed portions are spaced apart from each other at a first interval,
The main cartridge, the hardener cartridge, the mixing portion, and the nozzle portion are provided in pairs to simultaneously apply an adhesive over the exposed portions on both sides spaced apart from the first interval. Bonding device of the secondary barrier.
The method of claim 12,
Part of the mixing portion is made of a flexible material bonding apparatus of the secondary secondary barrier for the liquefied natural gas storage tank, characterized in that for changing the interval of the nozzle portion provided in a pair.
12. The method of claim 11,
The adhesive applying portion includes a heating portion for heating the main material and the curing agent,
The heating unit includes:
Liquefied natural material comprising at least one of a first heating unit mounted on an outer surface of each of the cartridges, a second heating unit mounted on an inner side of the cartridge receiving unit accommodating the cartridge, and a third heating unit mounted on the mixing unit Bonding device of auxiliary secondary barrier for gas storage tank.
The method of claim 1,
The auxiliary secondary barrier supply unit includes a central axis member wound around the auxiliary secondary barrier in the form of a roll,
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank, characterized in that it further comprises a protective sheet cartridge wound in the form of a roll of the protective sheet that can cover the edge and the outside of the secondary secondary barrier.
16. The method according to any one of claims 1 to 15,
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank further comprises a tension adjusting unit and a guide roller portion provided between the adhesive coating portion and the secondary secondary barrier supply of the frame.
17. The method of claim 16,
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank further comprises a pressure roller unit installed in the lower rear of the tension control unit.
17. The method of claim 16,
The tension adjusting unit includes a first tension roller and a second tension roller capable of adjusting the distance from each other,
The guide roller portion includes a plurality of rollers disposed in the shape of an arc at a predetermined distance from each other while being located in front of the tension adjusting portion,
And the first tension roller, the second tension roller, and the plurality of rollers are configured to be variable in length.
19. The method of claim 18,
Each of the first tension roller, the second tension roller, and the plurality of rollers,
Inner roller; And
A pair of outer rollers which form an inner space for accommodating the inner roller and which are slidingly coupled to the inner roller along an axial direction
Bonding device of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
18. The method of claim 17,
The pressure roller unit
First and second pressure rollers disposed on the left and right sides of the auxiliary secondary barrier, respectively; And
A pair of second pressing portions respectively coupled to the first pressing roller and the second pressing roller;
Including;
Any one of the pair of second pressurization portion is fixed to the first frame, the other is bonded to the secondary secondary barrier for liquefied natural gas storage tank fixed to the second frame.
A method of joining an auxiliary secondary barrier using the joining device of an auxiliary secondary barrier for a liquefied natural gas storage tank according to claim 1,
A first step of adjusting the width of the frame in response to the width of the sheath side on which the bonding apparatus is to travel;
A second step of heating the exposed portion of the primary secondary barrier to which the adhesive is to be applied to provide the heat necessary for curing the adhesive;
A third step of heating the adhesive by applying an adhesive over the heated exposed portion;
Providing a secondary secondary barrier over the adhesive and pressurizing the secondary secondary barrier to attach the secondary secondary barrier over the exposed portion;
Bonding method of the secondary secondary barrier for the liquefied natural gas storage tank comprising a.
The method of claim 21,
In the second step, the secondary secondary barrier for the liquefied natural gas storage tank, characterized in that using a heater to maintain the spaced apart from the exposed portion and to heat the exposed portion in any one or more forms of conduction, convection and radiant heat. Bonding method.
The method of claim 21,
In the third step, the adhesive is applied in a heated state by an adhesive applying unit having a heating unit, the method of joining the secondary secondary barrier for the liquefied natural gas storage tank.

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