KR20210120540A - An apparatus for welding automation of lng tank sealing wall - Google Patents

Abstract

The present invention provides an apparatus for automatically welding a sealing wall for an LNG cargo hold, comprising: a welding frame in which a plurality of sealing members for mutual welding are seated in a predetermined arrangement; a first transfer part for transferring the welding frame in one direction; a second transfer part provided opposite to a lower part of the first transfer part and transferring the welding frame in the other direction; lifting parts provided so as to be liftable on one side and the other side of the second transfer part, respectively, lowering the welding frame transferred in one direction along the first transfer part to the second transfer part, and rising the welding frame transferred in the other direction along the second transfer part to the first transfer part so as to return to an initial position; and a welding part provided on an upper part of the first transfer part, and welding a connection part between the plurality of sealing members seated on the welding frame. An object of the present invention is to provide the apparatus for automatically welding a sealing wall for an LNG cargo hold that can improve work convenience in a field.

Description

Sealed wall welding automation device for LNG cargo hold {AN APPARATUS FOR WELDING AUTOMATION OF LNG TANK SEALING WALL}

The present invention relates to an automatic sealing wall welding apparatus for an LNG cargo hold, and more particularly, by welding a plurality of sealing members constituting a sealing wall in an LNG cargo hold in advance to form a modular assembly of a predetermined size, which can be provided It relates to a sealing wall welding automation device for an LNG cargo hold.

In general, liquefied natural gas (LNG) is liquefied natural gas, which is one of fossil fuels, and such liquefied natural gas may be stored in an LNG cargo hold at a cryogenic temperature of -162°C.

Here, the LNG cargo hold may be formed of a land storage tank installed on the ground or buried underground, or a mobile storage tank installed in a transportation means such as a vehicle or a ship, depending on the installation location.

At this time, the liquefied natural gas has a risk of explosion when exposed to impact, and since it is stored in a cryogenic state, the cargo hold for storing the liquefied natural gas may have a structure in which impact resistance and liquid tightness are firmly maintained.

1 illustrates an example of a barrier structure of an LNG cargo hold.

Referring to Figure 1, the inner peripheral wall surface of the LNG cargo hold is sealed in a liquid-tight state by the sealing wall. That is, the sealing wall forms a single storage space by integrally connecting a plurality of sealing members 1 formed of a metal plate to each other by welding, thereby enabling storage and transportation of liquefied natural gas without leakage.

In this case, the sealing member 1 may include a first sealing member 1a in the form of a square plate, and a second sealing member 1b in the shape of a rectangular plate and having wrinkle portions formed on the upper surface at predetermined intervals, the second The wrinkle portion formed in the sealing member 1b may be expanded or contracted by a temperature change according to the loading of the liquefied natural gas to prevent damage due to thermal deformation applied to the sealing wall.

In addition, since the sealing wall is installed in a double structure, it is possible to completely seal the liquefied natural gas from leaking out.

Meanwhile, in the related art, in the process of installing the sealing wall in the LNG cargo hold, a worker enters the cargo hold and welds a plurality of sealing members 1 that become the material of the sealing wall using a welding machine, thereby installing the sealing wall on the inner wall of the cargo hold. .

However, in the welding operation of the sealing wall, the operator has to connect each sealing member 1 one by one through welding, so that the operation time is greatly increased due to the large amount of operation, thereby reducing the efficiency of the operation.

Registered Patent No. 10-0644217 (Registration date: Nov. 2, 2006) "Liquefied natural gas storage tank with improved insulation structure and manufacturing method therefor"

In the present invention, the sealing wall welding automation device for LNG cargo hold, specifically, by welding a plurality of sealing members in advance through an automated process, can be manufactured and supplied as a modular assembly of a predetermined size, thereby improving the convenience of work in the field. We would like to provide an automated sealing wall welding device for LNG cargo holds.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

In order to solve the above problems, the present invention provides a welding frame in which a plurality of sealing members to be welded to each other are seated in a predetermined arrangement, a first transfer unit for transferring the welding frame in one direction, and a lower portion of the first transfer unit opposite to each other The second transfer unit for transferring the welding frame in the other direction, the second transfer unit and one side and the other side, respectively, are provided so as to be able to elevate and lower the welding frame transferred in one direction along the first transfer unit to the second transfer unit. A connection between a plurality of sealing members provided on the upper part of the first transfer unit and an elevating unit for lowering the welding frame transferred in the other direction along the second conveying unit to the first conveying unit and returning to the initial position by lifting the welding frame in the other direction. It provides an automatic sealing wall welding apparatus for an LNG cargo hold including a welding part for welding the area.

In addition, it detects the welding frame transferred to the lower position of the welding part along the first transport part, and interlocks with the first transport part to stop the driving of the first transport part while welding of the sealing member seated on the welding frame by the welding part is in progress. It provides an automatic sealing wall welding device for LNG cargo hold further comprising a sensor member.

In addition, the welding frame provides an automatic sealing wall welding apparatus for an LNG cargo hold including an alignment roller driving to align the seated plurality of sealing members.

In addition, the welding frame provides an automatic sealing wall welding device for an LNG cargo hold in which a wrinkle insertion groove is formed in the upper surface of the welding frame, the corrugation formed in the sealing member is inserted correspondingly.

In addition, the welding frame provides an automatic sealing wall welding apparatus for an LNG cargo hold in which a gas flow groove is formed in which an inert gas is injected and flows in a portion where a connection portion between a plurality of sealing members welded by a welding unit is disposed.

In addition, the first transfer unit is formed in one direction, the first transfer frame for guiding the transfer of the welding frame, is provided at predetermined intervals along the longitudinal direction of the first transfer frame, the welding frame from the front end of the first transfer frame after It provides an automatic sealing wall welding apparatus for an LNG cargo hold comprising a first transfer driving unit for transferring toward the end and a first cylinder member for pushing the welding frame disposed on the front end of the first transfer frame to be coupled to the first transfer driver.

In addition, the second transfer unit is disposed under the first transfer unit, a second transfer frame for guiding the transfer of the welding frame, is provided at predetermined intervals along the longitudinal direction of the second transfer frame, and the welding frame is transferred to the second transfer frame. A sealing wall welding automation for an LNG cargo hold comprising a second transfer driving unit transferred from the rear end to the front end of provide the device.

In addition, the welding part is provided with a torch part having a welding torch, a transport crane that supports the torch part on the upper part of the first transport part, and a transport crane that transports the torch part in the XYZ axis direction, and presses the connection part between the sealing members to be welded. It is provided between the welding jig and the transfer crane and the torch part for fixing and guiding the welding direction of the welding torch, and provides a sealing wall welding automation device for an LNG cargo hold including a rotating part for rotating the torch part and the welding jig.

In addition, the welding jig is provided at the lower part of the jig frame and the jig frame that are movably guide-coupled to the torch part to press and fix the connection part between the sealing member to be welded, and the end of the welding torch is inserted along the longitudinal direction. It provides an automatic sealing wall welding apparatus for an LNG cargo hold including a jig member in which a slit is formed.

In addition, the torch unit provides an automatic sealing wall welding device for an LNG cargo hold including a tip guide member for movably fixing the end of the welding torch inserted into the guide slit to the jig member.

The sealing wall welding automation device for an LNG cargo hold according to an embodiment of the present invention can be manufactured into a modular assembly of a preset size by welding a plurality of sealing members constituting the sealing wall in the LNG cargo hold through an automated process, so that the sealing wall Product quality and productivity can be increased, and when a sealing wall is installed in an LNG cargo hold, it can be constructed using a modular assembly, which can contribute to increasing work convenience.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

1 illustrates an example of a barrier structure of an LNG cargo hold.
2 is a plan view showing an automatic sealing wall welding apparatus for an LNG cargo hold according to an embodiment of the present invention.
3 is a side view showing an automatic sealing wall welding apparatus for an LNG cargo hold according to an embodiment of the present invention.
4 is a diagram illustrating an operation of a lifting unit according to an embodiment of the present invention.
5 is a front view showing the overall configuration of a welding part according to an embodiment of the present invention.
6 is a perspective view illustrating a detailed configuration of a welding part according to an embodiment of the present invention.
7 is a cross-sectional view illustrating a state in which a connection portion between sealing members is welded using a welding part according to an embodiment of the present invention.
8 and 9 are diagrams illustrating a process of manufacturing a modular assembly using an automated sealing wall welding apparatus for an LNG cargo hold according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION The detailed description set forth below in conjunction with the appended drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly explain the present invention in the drawings, parts irrelevant to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In an embodiment of the present invention, expressions such as “or” and “at least one” may indicate one of the words listed together, or a combination of two or more.

2 is a plan view of a sealing wall welding automation device 10 for an LNG cargo hold according to an embodiment of the present invention, and FIG. 3 is a sealing wall welding automation device 10 for an LNG cargo hold according to an embodiment of the present invention. ) is shown in a side view.

Prior to the description, in this embodiment, based on FIGS. 2 and 3 , in the first transfer unit 200 , the left portion on which the first lifting member 410 is disposed is the front end, and the right portion on which the second lifting member 420 is disposed. It will be described with reference to the rear end.

The automatic sealing wall welding apparatus 10 for an LNG cargo hold according to an embodiment of the present invention is manufactured by welding a plurality of sealing members 1 constituting the sealing wall in the LNG cargo hold in advance to form a modular assembly of a predetermined size. can be supplied, so it is possible to increase the productivity of the sealing wall, and it can contribute to the increase of work convenience when installing the sealing wall in the LNG cargo hold.

2 and 3 , the automatic sealing wall welding apparatus 10 for an LNG cargo hold according to an embodiment of the present invention includes a welding frame 100 , a first transfer unit 200 , a second transfer unit 300 , It may include a lifting unit 400 and a welding unit 500 .

The welding frame 100 may be seated in a predetermined arrangement on the upper surface of the plurality of sealing members 1 to be welded.

Here, the sealing member 1 is a unit configuration of a sealing wall installed in the LNG cargo hold, and includes a first sealing member 1a in the form of a rectangular plate, and a second sealing member 1a in the shape of a rectangular plate and having corrugations formed at predetermined intervals on the upper surface. It may be made of a sealing member (1b).

These first and second sealing members (1a, 1b) may be formed of a steel material such as stainless steel or Invar steel, are welded to each other in a predetermined pattern, are installed inside the LNG cargo hold, and form a sealing wall in the form of a storage space. can be formed.

At this time, in this embodiment, a plurality of first and second sealing members (1a, 1b) are welded into a modular assembly of a preset size and manufactured, so that when constructing a sealing wall in an LNG cargo hold, a module manufactured on site The sealing wall can be easily constructed using the mold assembly.

Specifically, the welding frame 100 is formed as a rectangular plate body, and a plurality of first and second sealing members 1a and 1b may be seated in a predetermined arrangement thereon. On the upper surface of the welding frame 100 , the first A first seating part 110 on which the sealing member 1a is mounted and a second seating part 120 on which the second sealing member 1b is mounted may be formed.

As an example, referring to FIG. 2 , in this embodiment, the second seating part 120 is formed in a longitudinal direction at one end of the upper surface of the welding frame 100 , and the second seating part 120 is horizontally formed in the center of the upper surface. ) may be formed, and the second seating portion 120 may be formed in an area corresponding to the second sealing member 1b.

In addition, two first seating parts 110 may be formed on both sides of the second seating part 120 formed in the horizontal direction in the center of the upper surface of the welding frame 100, and each of the first seating parts ( 110 may be formed in an area corresponding to the first sealing member 1a.

Here, when the second sealing member 1b is seated on the upper surface of the second seating part 120, a pleat insertion groove 121 into which the wrinkle part of the second sealing member 1b is inserted correspondingly may be formed, Through this, the second sealing member 1b seated on the second seating part 120 may be fixed in a fixed position.

In addition, an alignment roller 111 capable of aligning the first sealing member 1a to be seated on the upper surface of the first seating part 110 may be provided, and the alignment roller 111 is the first sealing member When (1a) is displaced on the first seating part 110, it can be rotated by driving a motor to move the first sealing member 1a to the original position.

That is, the alignment roller 111 provided in the first seating part 110 is such that the end of the first sealing member 1a is in close contact with the end of the second sealing member 1b seated in the second seating part 120 . The first sealing member 1a may be aligned.

Accordingly, in the present embodiment, the four first sealing members 1a and the two second sealing members 1b may be seated in a predetermined arrangement on the upper surface of the welding frame 100 .

The first transfer unit 200 may transfer the welding frame 100 on which the plurality of sealing members 1 are seated in one direction.

Specifically, the first transfer unit 200 includes a first transfer frame 210 formed in one direction and provided with a guide rail 211 for guiding the transfer of the welding frame 100 , and the length of the first transfer frame 210 . A first transfer driver 220 provided at predetermined intervals along the direction to transfer the welding frame 100 in one direction along the guide rail 211 , and a welding frame disposed at the front end of the first transfer frame 210 . (100) may include a first cylinder member 230 for pushing rearward so as to be coupled to the first transfer driving unit (220).

Here, the welding frame 100 may be transferred along the guide rail 211 from the front end to the rear end on the first transfer frame 210, and the front end and the rear end of the first transfer frame 210 will be described later, respectively. A first elevating member 410 and a second elevating member 420 may be disposed.

That is, the welding frame 100 on which the plurality of sealing members 1 for welding are seated may be disposed on the first lifting member 410 of the front end of the first transport frame 210, and the welding frame 100 is The first cylinder member 230 and the first transfer driving unit 220 may be transferred toward the welding unit 500 , and the welding frame 100 passing through the welding unit 500 is produced by the first transfer driving unit 220 . 1 may be transferred to the second lifting member 420 at the rear end of the transfer frame 210 .

In addition, the first transfer driving unit 220 may be provided at predetermined intervals on both sides of the transfer path through which the welding frame 100 is transferred on the first transfer frame 210 .

As an example, in this embodiment, the first transfer driving unit 220 may be formed of a pinion gear (not shown) rotated by a motor, and both sides of the welding frame 100 are engaged with a pinion gear (not shown). A rack gear (not shown) may be formed.

At this time, in this embodiment, the first transfer driving unit 220 is meshed with a rack gear (not shown) of the welding frame 100 and formed as a pinion gear (not shown) capable of transporting the welding frame 100 has been described. , the present invention is not necessarily limited thereto, and may be formed of a roller (not shown) capable of transporting the welding frame 100 in close contact with the welding frame 100 .

In addition, the first cylinder member 230 may be made of a hydraulic cylinder or the like, and may push the welding frame 100 disposed on the first lifting member 410 of the front end of the first transfer frame 210 toward the transfer path.

Accordingly, when the first cylinder member 230 pushes the welding frame 100 disposed on the front end of the first transport frame 210 , the welding frame 100 is transported toward the transport path and the welding frame 100 . The rack gear (not shown) may be combined with the pinion gears (not shown) provided on both sides of the transport path, and the welding frame 100 is formed by rotation of the pinion gears (not shown) provided at predetermined intervals along the transport path. It may be transferred toward the rear end of the first transfer frame 210 .

In addition, the welding part 500 is disposed above the transport path of the first transport frame 210, so that the welding frame 100 transported along the transport path can be stopped at the lower position of the welding part 500, the welding part 500 ) A sensor member 240 interlocking with the first transfer driving unit 220 may be provided on the lower first transfer frame 210 .

That is, when the welding frame 100 reaches the lower position of the welding part 500 while the welding frame 100 is transported along the transport path by the first transport driver 220 , the sensor member 240 is It is possible to stop the operation of the first transfer driving unit 220 by sensing the welding frame 100 , whereby the welding unit 500 can weld the plurality of sealing members 1 seated on the welding frame 100 . .

Then, when the welding of the sealing member 1 is completed, the sensor member 240 is turned off and the first transfer driving unit 220 is operated, and the welding frame 100 on which the welded sealing member 1 is seated. may be transferred toward the rear end of the first transfer frame 210 .

The second transfer unit 300 is provided opposite to the lower portion of the first transfer unit 200 , and may transfer the welding frame 100 in a direction opposite to the transfer direction of the first transfer unit 200 .

At this time, the second transfer unit 300 disposed under the first transfer unit 200 may be configured in the same manner as the first transfer unit 200 described above, and only the direction in which the welding frame 100 is transferred is the first It may be set opposite to that of the transfer unit 200 .

Specifically, the second transfer unit 300 is disposed under the first transfer frame 210 and includes a second transfer frame 310 provided with a guide rail 311 for guiding the transfer of the welding frame 100 , and the second transfer frame 310 . 2 The second transfer driver 320 is provided at predetermined intervals along the longitudinal direction of the transfer frame 310 to transfer the welding frame 100 along the guide rail 311 in the opposite direction to the transfer direction of the first transfer unit 200 . ) and a second cylinder member 330 for pushing the welding frame 100 disposed at the rear end of the second transfer frame 310 forward to be coupled to the second transfer driving unit 320 .

The elevating unit 400 may be provided at the front end and the rear end of the second transfer unit 300 to be elevating, respectively.

4 is a view showing the operation of the lifting unit 400 according to an embodiment of the present invention. Referring to FIG. 4 , the lifting unit 400 is a first provided at the front end of the second transfer frame 310 . It may include a lifting member 410 and a second lifting member 420 provided at the rear end of the second transfer frame 310 .

Here, the first and second lifting members 410 and 420 are, respectively, the lifting plates 411 and 421 for supporting the welding frame 100 and the lifting plates 411 and 421 from the bottom surface of the second transfer frame 310. It may include a lifting cylinder (413,423).

In this case, auxiliary guide rails 412 and 422 that can be connected to the guide rails 211 and 311 respectively provided in the first and second transfer frames 210 and 310 may be provided on the lifting plates 411 and 421 .

With this configuration, the first elevating member 410 is provided at the front end of the second transfer frame 310, and the elevating plate 411 is located on the upper portion of the first transfer frame 210 by the elevating cylinder 413. When rising toward the front end, the auxiliary guide rail 412 of the lifting plate 411 may be connected to the guide rail 211 of the first transport frame 210, and when the lifting plate 411 descends, the auxiliary guide rail 412 may be connected to the guide rail 311 of the second transfer frame 310 .

In addition, the second elevating member 420 is provided at the rear end of the second transfer frame 310 , which also causes the auxiliary guide rail 422 of the elevating plate 421 according to the elevating and lowering of the first transfer frame 210 . It may be connected to the guide rail 211 of the first transfer frame 210 at the rear end of the , or may be connected to the guide rail 311 of the second transfer frame 310 at the rear end of the second transfer frame 310 .

Accordingly, as shown in (a) of FIG. 4, the welding frame 100 transferred along the guide rail 211 from the front end of the first transfer frame 210 to the rear end is the first transfer frame 210. It may be supported by the lifting plate 421 of the second lifting member 420 along the auxiliary guide rail 422 at the rear end of the.

In addition, as shown in (b) of FIG. 4, when the corresponding lifting plate 421 descends and the auxiliary guide rail 422 is connected to the guide rail 311 of the second transfer frame 310, the lifting plate ( The welding frame 100 supported by the 421 may be transferred along the guide rail 311 from the rear end to the front end of the second transfer frame 310 .

In addition, as shown in (c) of FIG. 4, the welding frame 100 transferred along the guide rail 311 from the rear end of the second transfer frame 310 to the front end is a first elevating member disposed correspondingly. It can be supported on the lifting plate 411 along the auxiliary guide rail 412 of 410, and when the lifting plate 411 is raised, the welding frame 100 supported on the corresponding lifting plate 411 is the first transfer frame. By being disposed at the front end of the 210, the welding frame 100 can be returned to the initial position.

On the other hand, the welding part 500 is provided at the upper part in the center of the longitudinal direction of the first transfer part 200 (see FIG. 2), and a connection portion (2, FIG. 7) between the plurality of sealing members seated on the welding frame 100 (see FIG. 7). 7) can be welded.

5 is a front view showing the overall configuration of the welding part 500 according to an embodiment of the present invention, and FIG. 6 is a perspective view showing the detailed configuration of the welding part 500 according to an embodiment of the present invention, 7 is a cross-sectional view showing a state of welding the connection portion 2 between the sealing members using the welding portion 500 according to an embodiment of the present invention.

5 to 7 , the welding part 500 includes a torch part 510 having a welding torch 511 for welding the connection part 2 between the plurality of sealing members seated on the welding frame 100 and , a transfer crane 520 that supports the torch unit 510 on the upper portion of the first transfer unit 200 and transports the torch unit 510 in the XYZ axis direction, and a sealing member provided in the torch unit 510 to be welded It is provided between a welding jig 530 that presses and fixes the connecting part 2 between the welding torch 511 and guides the welding direction of the welding torch 511, and the transfer crane 520 and the torch part 510, and the torch part 510 and the It may include a rotating part 540 for rotating the welding jig (530).

Here, the transfer crane 520 supports the torch unit 510 on the upper portion of the first transfer unit 200 , and may transfer the torch unit 510 in front, back, left and right, and up and down directions through a plurality of transfer means.

In addition, the torch unit 510 may be provided with a welding torch 511 for welding at a lower portion.

In addition, the welding jig 530 is formed in the shape of a square frame, the upper part is guide-coupled to the torch part 510, and the lower part can be fixed by pressing the connection part 2 between the sealing members to be welded.

Specifically, the welding jig 530 is provided at the bottom of the jig frame 531 guide coupled to the torch unit 510 through the rail formed in the longitudinal direction, and the sealing member to be welded is provided at the bottom of the jig frame 531. It may include a jig member 532 in which a guide slit 533 is formed in which the end of the welding torch 511 is inserted in the central portion along the longitudinal direction by pressing and fixing the connecting portion 2 .

Here, the jig member 532 may be formed of a metal material, and preferably may be formed of a copper material to cool the welding heat.

In addition, a tip guide member 512 for movably fixing the end of the welding torch 511 to the jig member 532 may be provided at a lower portion of the torch unit 510 .

That is, the tip guide member 512 is connected to the lower portion of the torch unit 510 and is provided to be movable along the longitudinal direction on the upper surface of the jig member 532 through a wheel provided on the bottom surface, and the jig member ( The end of the welding torch 511 inserted into the guide slit 533 of 532 can be fixed.

Accordingly, when the torch unit 510 moves along the jig frame 531 , the welding torch 511 and the tip guide member 512 provided under the torch unit 510 follow the jig member 532 . can move

In addition, the rotating unit 540 may be provided in a connection portion between the transfer crane 520 and the torch unit 510, and may rotate the torch unit 510 and the welding jig 530 at a preset angle, In the present embodiment, the torch unit 510 and the welding jig 530 may be rotated at an angle of 90° through the rotation unit 540 .

With this configuration, in the process of welding the plurality of sealing members 1 seated on the welding frame 100 through the welding unit 500 according to the present embodiment, the torch unit 510 is welded through the transfer crane 520 . After moving to the upper part of the frame 100, the torch part 510 and the welding jig 530 are lowered, and the connection part between the sealing member seated on the welding frame 100 with the jig member 532 at the bottom of the welding jig 530. It can be fixed by pressing (2).

At this time, before the torch unit 510 and the welding jig 530 are lowered, the jig member 532 may be disposed in a direction corresponding to the connecting portion 2 between the sealing member to be welded, the rotating unit 540 . The torch unit 510 and the welding jig 530 can be rotated through the .

As an example, in the case of welding the connecting portion 2 between the sealing members disposed in the horizontal direction, the torch unit 510 and the welding jig 530 are rotated through the rotating part 540 to rotate the welding jig 530 . It can be placed horizontally.

In addition, in a state in which the connection portion 2 between the sealing members seated on the welding frame 100 is pressed and fixed with the jig member 532 , the guide slit 533 formed in the jig member 532 is formed between the sealing member to be welded. It may coincide with the connection part (2).

At this time, by driving the transfer crane 520, the welding torch 511 of the torch unit 510 can be moved along the guide slit 533 of the jig member 532, and the welding torch 511 is tip guide. While moving along the guide slit 533 in a fixed state by the member 512, the flame is sprayed, and the connection portion 2 between the sealing members can be precisely welded.

In addition, referring to FIG. 7 , a gas flow groove 130 through which an inert gas flows may be formed in a portion of the welding frame 100 where the connection portion 2 between the sealing members is disposed.

That is, while the welding torch 511 welds the connecting portion 2 between the sealing members, an inert gas such as argon gas is supplied to the gas flow groove 130 of the welding frame 100 and flows, and the sealing is welded through this. It is possible to stabilize the connection portion 2 between the members.

As described above, in this embodiment, a plurality of sealing members 1 seated on the welding frame 100 through the welding part 500 can be mutually welded to form a modular assembly, and the welding frame on which the welded modular assembly is seated. (100) is a modular assembly is collected in the process of being sequentially transferred by the first transfer unit 200, the second lifting member 420, the second transfer unit 300 and the first lifting member 410, the welding frame Only (100) can be returned to the initial position.

In addition, the automatic sealing wall welding apparatus 10 for an LNG cargo hold according to this embodiment is a material supply unit (not shown) for supplying the sealing member 1 to the welding frame 100 disposed at the initial position of the first transfer unit 200 . city) may be additionally provided.

As an example, the material supply unit (not shown) is configured in the form of a robot arm having a plurality of vacuum adsorption members (not shown), and the loaded sealing member 1 is adsorbed through a plurality of vacuum adsorption members (not shown). Thus, it can be transferred to the seating portions 120 and 130 of the welding frame 100 and seated in a preset arrangement at the same time.

Meanwhile, in the following, a process of manufacturing and supplying a modular assembly in which a plurality of sealing members 1 are welded by using the automatic sealing wall welding apparatus 10 for an LNG cargo hold according to an embodiment of the present invention will be described in detail. do.

8 and 9 are diagrams illustrating a process of manufacturing a modular assembly using the automatic sealing wall welding apparatus 10 for an LNG cargo hold according to an embodiment of the present invention.

Referring to FIG. 8, in the process of manufacturing a modular assembly using the sealing wall welding automation device 10 for an LNG cargo hold according to the present embodiment, the first transport frame 210 through the material supply unit (not shown). A plurality of sealing members 1 may be seated in a predetermined arrangement on the welding frame 100 disposed at the front end of the .

In this case, the first lifting member 410 may be disposed on the front end of the first transport frame 210 , and the welding frame 100 may be disposed on the first lifting member 410 .

In addition, when the plurality of sealing members 1 are seated on the welding frame 100 , the first cylinder member 230 provided in the first conveying frame 210 may push the welding frame 100 toward the conveying path. , the welding frame 100 entering the transport path may be transported toward the rear end of the first transport frame 210 along the transport path by the first transport driver 220 provided at a predetermined interval in the transport path.

In addition, in the process in which the welding frame 100 is transported along the transport path, the sensor member 240 provided on the transport path detects the welding frame 100 transported to the lower position of the welding part 500 and first transports it. The operation of the driving unit 220 may be stopped, whereby the welding frame 100 may be disposed in a stopped state at the lower position of the welding unit 500 .

Subsequently, as shown in FIGS. 5 to 7 , the welding unit 500 transfers the torch unit 510 toward the welding frame 100 through the transfer crane 520 , and a welding jig provided in the torch unit 510 . The connection portion 2 between the plurality of sealing members seated on the welding frame 100 can be pressed and fixed through the 530 , and the welding torch 511 is moved along the welding jig 530 and between the sealing members. The connection part (2) can be welded.

In addition, when the welding of the sealing member 1 is completed, the torch unit 510 is evacuated by the transfer crane 520, and the sensor member 240 is turned off to operate the first transfer driving unit 220, The modular assembly 3 manufactured by welding between the sealing members 1 may be transported toward the rear end of the first transport frame 210 by the welding frame 100 .

In this case, the second lifting member 420 is disposed at the rear end of the first transfer frame 210 , and the welding frame 100 may be transferred to the second lifting member 420 .

In addition, the first elevating member 410 disposed at the front end of the first transfer frame 210 may be lowered and disposed on the second transfer frame 310 .

In addition, when the welding frame 100 is transferred to the rear end of the first transfer frame 210, the modular assembly 3 seated on the welding frame 100 is collected by an operator or a separate collection device (not shown). can

Meanwhile, referring to FIG. 9 , the welding frame 100 transferred to the rear end of the first transfer frame 210 is lowered by the second lifting member 420 to be disposed at the rear end of the second transfer frame 310 . can

Subsequently, the second cylinder member 330 provided in the second transfer frame 310 may push the welding frame 100 toward the transfer path to be coupled to the second transfer driving unit 320 , and welding is entered into the transfer path. The frame 100 may be transferred toward the front end of the second transfer frame 310 along the transfer path by the second transfer driver 320 provided at a predetermined interval in the transfer path.

Then, the welding frame 100 may be transferred to the front end of the first transfer frame 210 by the first elevating member 410 to return to the initial position.

As described above, in the automatic sealing wall welding apparatus 10 for an LNG cargo hold according to an embodiment of the present invention, a plurality of sealing members 1 constituting the sealing wall in the LNG cargo hold are welded through an automated process to obtain a preset It can be manufactured with a modular assembly (3) of the size, so it is possible to increase the quality and productivity of the sealing wall product, and it can be constructed using the modular assembly when installing the sealing wall in the LNG cargo hold, contributing to the increase of work convenience. have.

Embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples in order to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical spirit of the present invention in addition to the embodiments disclosed herein are included in the scope of the present invention.

10: sealing wall welding automation device for LNG cargo hold
100: welding frame 200: first transfer part
210: first transfer frame 220: first transfer driving unit
230: first cylinder member 240: sensor member
300: second transfer unit 310: second transfer frame
320: second transfer driving unit 330: second cylinder member
400: lifting unit 410: first lifting member
420: second lifting member 500: welding part
510: torch part 520: transfer crane
530: welding jig 540: rotating part

Claims (10)

a welding frame on which a plurality of sealing members to be welded to each other are seated in a predetermined arrangement;
a first transfer unit for transferring the welding frame in one direction;
a second transfer unit provided opposite to a lower portion of the first transfer unit and configured to transfer the welding frame in the other direction;
The second transfer unit is provided so as to be lifted on one side and the other side, respectively, the welding frame transferred in one direction along the first transfer unit is lowered to the second transfer unit, and transported in the other direction along the second transfer unit. a lifting unit for raising the welded frame to the first transfer unit and returning it to an initial position; and
An automatic sealing wall welding apparatus for an LNG cargo hold provided on the first transfer part and including a welding part for welding a connection portion between a plurality of sealing members seated on the welding frame.
The method of claim 1,
Sensing the welding frame transferred to the lower position of the welding unit along the first conveying unit, and stopping the driving of the first conveying unit while welding of the sealing member seated on the welding frame by the welding unit is in progress A sealing wall welding automation device for an LNG cargo hold further comprising a sensor member interlocking with the first transfer unit.
The method of claim 1,
The welding frame is
An automatic sealing wall welding device for an LNG cargo hold including an alignment roller driving to align the seated plurality of sealing members.
The method of claim 1,
The welding frame is
An automatic sealing wall welding device for an LNG cargo hold in which a wrinkle insertion groove into which the wrinkle portion formed in the sealing member is inserted correspondingly is formed on the upper surface.
The method of claim 1,
The welding frame is
A sealing wall welding automation device for an LNG cargo hold in which a gas flow groove through which an inert gas is injected and flows is formed in a portion where a connection portion between the plurality of sealing members welded by the welding portion is disposed.
The method of claim 1,
The first transfer unit,
a first transport frame formed in one direction and guiding the transport of the welding frame;
a first transfer driving unit provided at predetermined intervals along the longitudinal direction of the first transfer frame to transfer the welding frame from the front end to the rear end of the first transfer frame; and
A sealing wall welding automation device for an LNG cargo hold comprising a first cylinder member for pushing the welding frame disposed on the front end of the first transfer frame to be coupled to the first transfer driving unit.
The method of claim 1,
The second transfer unit,
a second transfer frame disposed under the first transfer unit and guiding the transfer of the welding frame;
a second transfer driver provided at predetermined intervals along the longitudinal direction of the second transfer frame to transfer the welding frame from the rear end to the front end of the second transfer frame; and
and a second cylinder member for pushing the welding frame disposed at the rear end of the second transfer frame to be coupled to the second transfer driving unit.
The method of claim 1,
The welding part,
Torch unit having a welding torch;
a transport crane supporting the torch part on an upper portion of the first transport part and transporting the torch part in the XYZ axis direction;
a welding jig provided in the torch unit to press and fix a connection portion between sealing members to be welded and guide a welding direction of the welding torch; and
A sealing wall welding automation device for an LNG cargo hold provided between the transfer crane and the torch unit, and including a rotating unit for rotating the torch unit and the welding jig.
9. The method of claim 8,
The welding jig,
a jig frame movably coupled to the torch unit; and
A sealing wall for an LNG cargo hold comprising a jig member provided at a lower portion of the jig frame to press and fix a connection portion between the sealing members to be welded, and a guide slit into which the end of the welding torch is inserted along the longitudinal direction Welding automation device.
10. The method of claim 9,
The torch unit,
A sealing wall welding automation device for an LNG cargo hold including a tip guide member for movably fixing the end of the welding torch inserted into the guide slit to the jig member.

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