KR101030611B1 - Automatic egw method, construction method of tank vessel having the egw method and tank vessel using the construction method - Google Patents

Abstract

Disclosed are an automatic welding method, a tank vessel building method including the same, and a tank vessel constructed by the method. A plurality of bottom bottom bottom 107, including a hopper 109 formed on one side of the bottom bottom bottom, a center bulkhead 108, an outer side wall and an upper deck 105 A tank ship building method for drying a tank vessel by combining two ring type Grand Pre-Erection (GPE) blocks, wherein the tank ship building method comprises a region adjacent to the outer sidewall of the upper deck. Forming a first temporary access for a gondola access to a second temporary through hole through an area adjacent to the central partition of the upper deck, at least one of the bottom double bottom or the hopper; Forming a third temporary through-hole for ventilation in one portion, welding the different blocks by entering and leaving a gondola and an automatic welding device through the first and second temporary through holes; The method comprising combining W and a step of closing said first, second and third temporary feed-through. Therefore, by forming an optimal temporary through-hole to facilitate the operation in the cargo formed by connecting the ring-type blocks to each other, there is an advantage that can improve the workability.

 Shipbuilding, EGW, Automatic Welding, Skidding System

Description

Automatic welding method and tank ship construction method including the same and tank ship constructed by the same method AUTOMATIC EGW METHOD

The present invention relates to an automatic welding method, a tank ship drying method including the same, and a tank ship dried by the method, and more particularly, after mounting of blocks mounted in a ring type through pre-Erection. The present invention relates to an automatic welding method for improving the workability by optimizing a welding process, a tank ship drying method including the same, and a tank ship dried by the method.

In general, a single ship is completed by assembling each block constituting the ship from the bow to the stern, and each of the ships through cutting, processing, and design work according to the type and size of the ship entered in the design. After the block is manufactured, the blocks are moved to the dock and assembled.

However, due to the boom in shipbuilding, block production surged as orders increased, and blocks waiting to be assembled around the dock also increased, which disrupted the entire process. It was possible to increase the amount of drying by significantly shortening the air in the dock, which is the core of the ship building process, by making a large block of weight and transferring it to the dock by sea crane.

These blocks are indispensable for vertical butt welding to each other after they have been transferred to the dock. Such welding, for large vessels such as container ships, for example, in the case of 8,100 TEU container ships, has an outer shell thickness of 75 mmt and several decades of conventional CO2 welding. To this end, automatic welding (EGW; Electro gas Welding) that can reduce the working time is preferred.

However, when the upper deck of the conventional ship is opened, the above-described EGW equipment was able to enter and work inside the block through the design of various work processes, but recently, crude oil and refined oil (oil) The upper deck, which transports liquid cargo such as products, chemicals, and liquefied gases, is transported within the dock, when the tanker is closed or when a ring type block is connected. The work for connecting to each other is performed manually, the installation and dismantling of the workbench for the work is repeated, it takes a long time, or it is difficult to create a working environment for the entry and exit of the equipment for automatic welding.

One object of the present invention for solving the above problems is to improve the workability by optimizing the temporary through-hole for connecting the ring-type blocks to each other in the drying method of the tank vessel is dried in the ring-type block The present invention provides an automatic welding method and a tank ship construction method and a tank ship constructed by this method.

Another object of the present invention, the automatic welding method and tank vessel drying method and tank vessels dried by this method can be automatically welded to reduce the number of working hours, and also omit the installation and removal work of the workbench In providing.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, a bottom double botton, a hopper formed on one side of the bottom double bottom, a center bulkhead, an outer side wall and In the tank vessel drying method of drying a tank vessel by combining a plurality of ring type Grand Pre-Erection (GPE) block including an upper deck, the tank vessel drying method Forming a first temporary access for a gondola in a region adjacent the outer sidewall of the upper deck, and forming a second temporary through hole penetrating the region adjacent the central partition of the upper deck. And forming a third temporary through hole for ventilation in at least one of the floor double bottom or the hopper, and the gondola and ruler through the first and second temporary through holes. Access to the welding device includes the step and the step of closing said first, second and third temporary-through that bond to each other by welding each other said block.

In addition, the automatic welding device used in the welding and joining step uses EGW (embedded wire) in which flux is continuously supplied and protects the CO 2 gas and the weld metal in which the narrow wire is embedded (EGW). -gas welding) It is preferable that the welding is performed by using the welding method.

In addition, the tank ship building method includes the steps of manufacturing a plurality of ring-type blocks constituting the vessel, transporting the blocks to the dock and unloading, install a skidding system (skidding system) for moving the block, Moving the different blocks adjacent to each other through a skidding system to position them at a designated position and setting the joints to be joined to each other, and after the setting, forming the first temporary through hole. More preferably.

Further, according to another preferred embodiment of the present invention for achieving the above object of the present invention, the tank vessel is dried by the tank vessel drying method according to the above-mentioned preferred embodiment.

In addition, according to another preferred embodiment of the present invention for achieving the above object of the present invention, in the automatic welding method for welding the cargo (cargo) formed of a ring-type block constituting the vessel, the automatic The welding method includes opening one or a plurality of work passages in a shape in which one or more of automatic welding equipment, a cable, or a gondola is accessible to the upper decks of blocks adjacent to each other to form the cargo, and the automatic welding through the work passages. Entering any one of the equipment, cables or gondola to proceed with the work and closing the work passage when the work progressing step is completed.

According to the present invention, by forming an optimal temporary through-hole to facilitate the operation in the cargo formed by connecting the ring-type blocks to each other, there is an effect that can improve the workability.

In addition, since the welding process does not need to be performed manually, the installation and removal work of the workbench for manual work can be omitted, thereby reducing the number of working hours, and the advantages of easily welding the blocks through the EGW welding method are provided. have.

Hereinafter, a first embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. Note that, in the following description, components that are substantially the same in structure and function and can be handled identically can be identified by the same reference numerals.

First embodiment

A tank ship drying method according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4 as follows. 1 is a flowchart illustrating a tank ship construction method according to a first embodiment of the present invention in order, Figure 2 is a perspective view for explaining the blocks constituting the tank vessel, Figure 3 is formed in an adjacent block 4 is a perspective view showing the first temporary through hole viewed from the inside of the cargo, and FIG. 4 is a partial perspective view showing the first and second temporary through holes of the present invention viewed from above.

As shown in the drawing, the tank vessel construction method relates to a method of drying a tank vessel by combining a plurality of ring type Grand Pre-Erection (GPE) blocks 100, To explain in more detail with reference to FIG. 2, the block 100 includes a bottom double bottom 107, a hopper 109 formed on one side of the bottom bottom bottom, and a center bulkhead 108. a cargo, comprising a bulkhead, an outer sidewall 106 and an upper deck 105, wherein the cargo is hollow inside.

Here, the tank ship building method, first, go through the step (S10) of forming a first temporary through-hole (governmental access) for gondola access in the area adjacent to the outer sidewall 106 of the upper deck (105).

In this case, referring to the drawing shown in FIG. 4, the first temporary through hole 110 has a substantially rectangular shape having a length W1 of 2000 to 4000 mm on one side and a length H1 of 1000 to 1500 mm on the other side. It is preferable to be formed in a shape, more preferably it is preferably formed in a shape and size corresponding to the gondola, for example, the length (W1) of the one side is 3000mm, the length (H1) of the other side is More preferably, it is formed to 1200mm, but is not limited thereto.

Next, a step S20 is performed to form a second temporary through hole 120 penetrating an area adjacent to the central partition 108 of the upper deck 105.

In this case, referring to the drawing shown in FIG. 4, the second temporary through hole 120 is formed similarly to the first temporary through hole 110, and the length W2 of one side is 2000 to 4000 mm. The other side length (H2) is preferably formed in a substantially rectangular shape of 1000 to 1500 mm, the second temporary through hole 120 is formed in a shape and size corresponding to the above-described EGW equipment, more preferably The length (W2) of the one side is 800mm, the length (H2) of the other side is possible to be formed to 600mm, but is not limited to or limited to, the upper deck 105 in the central partition 108 Since it is formed adjacent to, if the shape of the entrance and exit of the equipment for welding the adjacent block 100 to each other through the second temporary through-hole 120 can be freely changed.

Next, the step of forming a third temporary through-hole 130 for ventilation in at least one portion of the bottom bottom bottom 107 or the hopper 109 (S30).

In this embodiment, the first temporary through hole 110 forming step (S10), the second temporary through hole 120 forming step (S20) and the third temporary through hole 130 forming step (S30) Although presented as proceeding in turn, it is not limited or limited thereto, and the order may be changed or progressed at the same time depending on the needs of the work.

In this case, referring to FIGS. 3 and 4, the different blocks 101 and 102 are disposed adjacent to each other, and the first, second and second blocks are joined at the junctions of the adjacent blocks 101 and 102. It is preferable that the third temporary through holes 110, 120, and 130 are formed, and FIGS. 5 to 6 will be described to explain in more detail the process in which the blocks 100 are adjacent to each other. FIG. 5 is a flowchart showing a tank ship building method before the step of forming the first temporary through hole in sequence, and FIG. 6 is a stepped perspective view schematically showing the tank ship building method of FIG. 5.

As shown in the drawing, the tank ship building method goes through the following preceding steps until the step S10 of forming the first temporary through hole 110.

First, a step (S01) of manufacturing a plurality of ring type block 101 constituting the vessel is performed. At this time, the blocks 101 and 102 are all formed integrally to the upper deck 105 as described above, and are formed in a ring type in which only one side is opened and the top is closed.

As shown in FIG. 6A, as described above, the bottom double bottom 107, the hopper 109 formed on one side of the bottom double bottom, the central partition 108, the outer side wall 106 and the upper deck, respectively. All of the 105 is provided in a mounted state and is formed in a ring type as a whole. As a result, the blocks 101 and 102 are not easily accessible from other directions except for the open side described above, for example, from the top. It is generally provided in a state that is not.

Next, the blocks 101 and 102 are transported to the dock and unloaded (S02). In this case, the blocks 101 and 102 are transported through a general crane and unloaded, but are not limited or limited thereto, and the blocks 101 and 102 may be arranged to undergo a general contrasting process at a predetermined position. The process can be used.

Next, a skidding system 201 is installed for moving the different blocks 101 and 102 to be adjacent to each other and positioned at a designated position, and as shown in FIG. After the step S03, the step S10 of forming the first temporary through-hole is performed.

Here, in order to move the blocks 101 and 102, a skidding system 201 is used to move the mounting blocks of a commercial ship, as shown in FIGS. Preferably, in the present embodiment, the steps S01 to S03 have been performed, and after that, the step S10 of forming the first temporary through hole is performed, but the present invention is not limited thereto or limited thereto. Of course, it can also be performed in parallel with step S03.

Next, the gondola and the automatic welding device enter and exit through the first and second temporary through holes to weld and combine the different blocks with each other (S40).

At this time, the automatic welding device uses a thin wire with a flux supplied continuously and an EGW (Electro-gas welding) welding method for protecting CO2 gas and the weld metal containing the thin wire. As a device to which welding is performed, the welding is used in the step S40.

Thereafter, the tank ship building method is completed by completing the step S50 of closing the first, second and third temporary through holes.

However, after the closing step (S50), the tank ship building method presented in this embodiment is generally repeated, and when the welding coupling between the blocks is completed, the loading of the hull block is completed, and the hull thereafter. Attaching various machinery and electric devices including the main engine necessary for the operation of the ship, and connecting the devices into one system, such as plumbing work and wiring work, seaman's residence facility work, on the surface and inside of the hull When the overall design work including painting work to prevent rust is completed, the tank ship is completed.

Therefore, by forming the optimal temporary through-hole to facilitate the operation in the cargo formed by connecting the ring-type blocks to each other, there is an effect that can improve the workability.

In addition, since the welding process does not need to be performed manually, the installation and removal work of the workbench for manual work can be omitted, thereby reducing the number of working hours, and the advantages of easily welding the blocks through the EGW welding method are provided. have.

Second embodiment

The automatic welding method according to the second embodiment of the present invention will be described with reference to FIG. 7. 7 is a flowchart showing an automatic welding method according to a second embodiment of the present invention in order.

As shown in the drawing, the automatic welding method relates to an automatic welding method for welding an interior of a cargo formed of a ring-type block constituting the vessel described above in the first embodiment, wherein the cargo is first formed. One or more of the automatic welding equipment, the cable and the gondola in the upper deck of the adjacent blocks to each other through the step of opening one or a plurality of work passages in an accessible shape (S110).

At this time, the working passage is formed similar to the first and second temporary through holes 110 and 120 of the above-described first embodiment, but is not limited thereto, and the automatic welding device for automatic welding of the wall constituting the cargo , Any one of the cable and the gondola is freely changeable as long as the structure can be moved in and out, and the general automatic welding device is used to weld the vertical wall, it is preferably formed to correspond.

Next, the step of entering the automatic welding device, any one of the cable or gondola through the working passage to go through the operation (S120).

In this case, as described above, as described above, the automatic welding device, the cable connected thereto or the above-described automatic welding device can be loaded or taken out by a worker or a gondola for the operator to board for work. It is preferable to form.

Next, the automatic welding method is completed by going through the step S130 of closing the work passage when the work progress step is completed.

At this time, the closing of the working passage is preferably welded by the submerged arc welding (SAW) method, but is not limited thereto.

Therefore, welding can be performed by the automatic welding method on the vertical wall forming the cargo inside the block, thereby improving workability and reducing work time.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a flowchart showing a tank ship drying method according to a first embodiment of the present invention in order.

2 is a perspective view illustrating the block constituting the tank vessel.

3 is a perspective view showing the first temporary through hole formed in the adjacent block viewed from the inside of the cargo.

4 is a partial perspective view showing the first and second temporary through holes of the present invention seen from above.

Figure 5 is a flow chart showing in sequence the tank ship building method before the step of forming the first temporary through-hole.

FIG. 6 is a stepped perspective view schematically illustrating a tank ship building method of FIG. 5.

7 is a flowchart showing an automatic welding method according to a second embodiment of the present invention in order.

<Explanation of symbols for the main parts of the drawings>

100, 101, 102: block 105: upper deck

106: outer sidewall 107: floor double bottom

108: central bulkhead 109: hopper

110: first temporary through hole 120: second temporary through hole

130: third temporary through hole

Claims (5)

A plurality of ring type GPEs including a bottom double botton, a hopper formed on one side of the bottom double bottom, a center bulkhead, an outer sidewall and an upper deck; In the tank ship building method of combining a tank (Grand Pre-Erection) block to dry the tank vessel (tank vessel), Forming a first temporary access for a gondola in a region adjacent said outer sidewall of said upper deck; Forming a second temporary through hole penetrating a region adjacent the central partition of the upper deck; Forming a third temporary through hole for ventilation in at least one of the bottom floor bottom or the hopper; Welding the different blocks into and out of each other by accessing the gondola and the automatic welding device through the first and second temporary through holes; And Closing the first, second and third temporary through holes; Tank ship drying method comprising a. The method of claim 1, The automatic welding device used in the welding and joining step uses EGW (Electro-gas) that uses a flux-embedded thin wire that is continuously supplied and protects the CO2 gas and the weld metal in which the narrow-wire wire is embedded. welding) A method of building a tank ship, a device on which welding is carried out using the welding method. The method of claim 1, Manufacturing a plurality of ring-type blocks constituting the vessel; Transporting the blocks to the dock for unloading; Installing a skidding system for moving the block, moving the different blocks adjacent to each other through the skidding system to position them at a designated position, and setting joints joined to each other; The method of claim 1, further comprising the step of forming the first temporary through hole after the setting step. A tank vessel which is dried by the tank vessel drying method according to any one of claims 1 to 3. In the automatic welding method for welding the inside of the cargo (cargo) formed of a ring-type block constituting the vessel, Opening one or a plurality of work passages in a shape in which at least one of automatic welding equipment, a cable, and a gondola is accessible on the upper decks of blocks adjacent to each other forming the cargo; Entering at least one of the automatic welding equipment, a cable, and a gondola through the working passage to perform a work; And Closing the work passage when the work progress step is completed; Automatic welding method comprising a.

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