KR20150035051A - Insulation Box Feed Device and Feed Method of LNG Holds - Google Patents

Abstract

The present invention relates to a method for transporting the insulation box of an LNG cargo hold, comprising: a step (a) of loading a plurality of insulation boxes coated with a resin onto a line tracer and receiving a transport command transmitted from a terminal; a step (b) of determining the moving target position of the insulation boxes in accordance with the transport command; a step (c) of moving the loaded insulation boxes to an elevator to allow the insulation boxes to be transported to a transporting target floor in accordance with the determination in the step (b); a step (d) of loading the insulation boxes loaded onto the line tracer into the elevator; a step (e) of moving the insulation boxes to a transporting target position when the moving target position of the insulation boxes is on the current floor in the step (c); and a step (f) of unloading the insulation boxes from the line tracer which is moved to the transporting target position. Therefore, the insulation boxes coated with a resin can be easily moved to a transporting target position on the current floor as well as on a different floor in a cargo hold; and worker fatigue can be significantly reduced as heavy insulation boxes are transported by the line tracer.

Description

Technical Field [0001] The present invention relates to an insulation box conveying apparatus for an LNG cargo hold,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device and a method for transferring a heat insulating box in an LNG cargo hold, and more particularly, to a device and a method for transferring a heat insulating box in an LNG cargo hold, .

In general, natural gas is transported in the form of liquefied natural gas (LNG), which is transported in the form of gas through land or sea gas pipelines, and is stored in the LNG transport and transported to a remote destination.

Such LNG is obtained by cooling natural gas to a cryogenic temperature, for example, approximately -163 DEG C, and its volume is reduced to approximately 1/600 of that of natural gas in a gaseous state, so that it is suitable for long distance transportation through the sea.

Such LNG can be transported through LNG transporting vessels, transported through the sea, unloaded to land demand sites, or transported through LNG RV (LNG Regasification Vessel), through the sea, LNG carriers and LNG RVs are equipped with LNG storage tanks (also called 'cargo holds') that can withstand the extreme temperatures of LNG.

In addition, demand for floating marine structures such as LNG FPSO (Floating Production Storage and Offloading) and LNG FSRU (Floating Storage and Regasification Unit) is gradually increasing, and LNG carrier or LNG RV Storage tanks are included.

Such LNG storage tanks are classified into independent tank type and membrane type depending on whether the insulation for storing the LNG at a cryogenic temperature directly acts on the load of the cargo. Separate tank type storage tanks in which the insulation does not directly affect the load of the cargo are divided into MOSS type and IHI-SPB type. Membrane type storage tanks which directly affect the load of the cargo are GT NO 96 type and TGZ Mark III It is divided into types.

The cargo hold, that is, the membrane type GT NO 96 type cargo hold according to one embodiment of the prior art is stacked on the inner wall of the hull. A primary insulation box made of a plywood box and a perlite, and a secondary insulation box.

The primary insulation box of the cargo hold is located on the LNG side, and the secondary insulation box is located on the inner wall side of the hull. A primary sealing wall and a secondary sealing wall made of Invar steel (36% Ni) having a thickness of 0.5 to 0.7 mm are respectively installed on the upper side of each of the primary insulation box and the secondary insulation box. The primary sealing wall and the secondary sealing wall are also referred to as a primary membrane and a secondary membrane (secondary membrane).

Therefore, the primary sealing wall and the secondary sealing wall have almost the same liquid tightness and strength, so that the secondary sealing wall can safely support the cargo LNG for a considerable period of time when the primary sealing wall is leaked.

For these LNG carriers, there are usually four cargo tanks, and for the cargo hold excluding the cargo cargo holds about 10,000 standard boxes per cargo (50 to 60 kg per cargo) are installed. At this time, about 5,000 secondary standard boxes are installed, and about 5,000 primary standard boxes are installed.

Especially, most of the standard standard box installation work is done manually by the worker. Usually, one box is composed of three people and two boxes are installed and the other box is fixed.

Such a process involves the risk of safety accidents and the risk of musculoskeletal diseases due to the manual installation of the box, and it is not easy to improve the production capacity in preparation for an increase in LNG ship production in the future due to limitations in productivity improvement.

In other words, in the case of the secondary standard box, unlike the primary standard box, a resin material is coated on one side, so it is not easy to work with the apparatus.

In addition, since a heavy box is installed by about 120 workers per day for two workers, the workers who have worked for a long time frequently develop musculoskeletal diseases and the like and can not work continuously.

Meanwhile, the movement of the heat insulating box is carried out by a truck, a forklift or the like to a cargo hold of the LNG carrier, and the heat insulating box moved by the cargo hold is coated with resin on one side of the heat insulating box by a resin application device do.

The operator transports the insulation box to each layer where the insulation box is to be installed by using an elevator to transport the insulation box to a manual cart and move to another layer. Since the elevator can not be taken directly by the operator, the passenger cart is moved to the desired floor, and the operator uses the stairs to arrive at the corresponding floor, and then the passenger cart and the insulation box are lowered.

Then, the operator moves to the place where the manual cart is to be moved. Since the movement of the heat insulating box by the operator depends on the force, the number of the heat insulating boxes that can be mounted on the manual cart is determined, which makes it impossible to transfer a large amount of the heat insulating box.

In addition, although the heat insulating box and the manual cart are transported by using the elevator, the operator who takes charge of the transportation of the heat insulating box takes a long time because it uses the stairs.

For this purpose, the present applicant has filed a utility model registration application No. 20-0438079 entitled " a device for installing a heat insulating box ceiling ", and a utility model registration No. 20-0438080 filed for a '

For example, Patent Document 1 below discloses a device for installing a heat insulating box for an LNG ship.

An insulation box installing apparatus for an LNG ship according to the following Patent Document 1 includes an electric pallet truck for transporting an air balance device, a movable pallet truck coupled to the pallet truck, And an air balancing device installed at the center of both ends of the outrigger to reduce the load of the operator during the installation of the heat insulating box.

 An air balance main cylinder installed at a central portion of the air balance device to support a load of a heat insulating box, a two-stage lift arm horizontally attached to one side of the electric pallet truck, A jig frame hinged to the lift arm and supporting the entire jig, and a jig rotation restricting brake provided on one side of the jig frame for restricting rotation of the jig without the heat insulating box.

A vacuum pad frame extending horizontally coupled to the jig frame and fixed to the vacuum pad and connected to the jig frame by a rotary shaft to rotate the heat insulating box, and a plurality of vacuum pad frames attached to the vacuum pad frame to vacuum- And a vacuum adsorption pad.

Korea Utility Model Registration No. 20-0441414 (registered on August 8, 2008) Korea Utility Model Registration No. 20-0438079 (Registered on January 11, 2008) Korea Utility Model Registration No. 20-0438080 (registered on January 11, 2008)

However, in the conventional heat insulation box installation apparatus, the brake using the pneumatic cylinder is installed on the jig rotary shaft to reduce the load of the operator, and the heat insulation box is unclamped and the brake is operated to limit the rapid rotation of the jig , There is a problem that the operator has to operate the brakes, and there is a problem that a worker or the like according to manual operation must be additionally arranged.

It is an object of the present invention to provide a device for transferring a heat insulating box of an LNG cargo hold and a method of transferring the same, which can automatically distribute the heat insulating box to each layer to which the heat insulating box is to be installed.

Another object of the present invention is to provide a device for transferring a heat insulating box of an LNG cargo hold and a method of transferring the same to centrally manage the distribution of the heat insulating box.

It is still another object of the present invention to provide a device for transferring a heat insulating box of an LNG cargo hold and a method of transferring the same, in which a line tracer is suitably disposed in each layer in which a heat insulating box is distributed to efficiently transfer the heat insulating box.

In order to accomplish the above object, the present invention provides a heat insulation box transfer device for a LNG cargo hold, comprising: a terminal for transferring a transfer command of the insulation box remotely; a transfer box for transferring the insulation box according to a transfer command transmitted from the terminal; And an elevator for moving up and down to a layer for moving the heat insulating box loaded on the line tracer.

And the transfer command includes movement position information of the heat insulation box.

Wherein the line tracer comprises a communication unit for receiving the transfer command, a control unit for determining a transfer position of the heat insulating box by analyzing a transfer command received by the communication unit, and controlling the transfer of the heat insulating box to the determined transfer position, And a driving unit for moving the heat insulating box to the feeding position according to a driving command.

According to another aspect of the present invention, there is provided a method of transporting a heat insulation box in an LNG cargo hold, the method comprising: (a) receiving a transport command transmitted from a terminal in a state in which a resin- (b) determining a transfer position of the heat insulating box according to the transfer command; (c) if the transfer position is a different layer, Moving the stacked heat insulating box to a position of an elevator, (d) loading the heat insulating box loaded on the line tracer onto the elevator, (e) (F) the line tracer moved to the transfer position includes a step of lowering the heat insulating box. It shall be.

In the step (a), (a1) the heat insulating box includes a step of applying resin to one surface of the heat insulating box by a resin applying device.

And (a2) after the step (a1), the heat insulating box is loaded on the conveyor of the line tracer by the conveyor of the resin application device.

In the step (a), the transfer command includes position information on which the line tracer is to be moved.

In the step (c), (c1) the line tracer moves toward the elevator.

(C2), the line tracer includes determining whether the elevator is usable, and when the elevator is not available, the line tracer is configured to wait at the elevator entrance And a control unit.

After the step (c2), (c3) the elevator moves to the corresponding floor according to the inputted schedule in a state where the heat insulating box is loaded.

In the step (d), the step of raising or lowering the layer to move the heat insulating box loaded on the elevator is further characterized by the step of raising and lowering.

As described above, according to the present invention, it is possible to easily transfer the heat-insulating box coated with resin to the transfer position of not only the corresponding layer of the cargo hold but also another layer, It is possible to drastically reduce the fatigue of the operator.

According to the method for transporting the insulation box of the LNG cargo hold according to the present invention, it is possible to quickly transfer the insulation box to the layer to be transported according to the transport command of the terminal and the schedule of the elevator, and completely dispatch the operation of distributing the insulation box And it is possible to arrange a plurality of line tracers on the layer having a large amount of conveyance of the heat insulating box, thereby more effectively managing the distribution of the heat insulating box.

FIG. 1 is a block diagram showing the construction of a heat insulating box transporting apparatus of an LNG cargo hold according to a preferred embodiment of the present invention. FIG.
FIG. 2 is a schematic view illustrating an elevated state of an elevator according to the transfer of a heat insulating box of an LNG cargo hold according to a preferred embodiment of the present invention.
3 is a schematic view illustrating a state in which an elevator is lowered according to the conveyance of a heat insulating box in an LNG cargo hold according to a preferred embodiment of the present invention.
FIG. 4 is a schematic view illustrating the transportation of a heat insulation box of a line tracer and an elevator of an LNG cargo hold according to a preferred embodiment of the present invention.
FIG. 5 is a flowchart illustrating steps of a method for transporting a heat insulating box of an LNG cargo hold according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the construction of a heat insulating box transporting apparatus of an LNG cargo hold according to a preferred embodiment of the present invention.

The insulation box transfer device of the LNG cargo hold according to the preferred embodiment of the present invention includes a terminal 10 for transferring a transfer command of the insulation box remotely, a line 10 for loading and transporting the insulation box in accordance with a transfer command transmitted from the terminal 10, A tracer 20, and an elevator 30 which is lifted and lowered to a layer to which the heat insulating box loaded on the line tracer 20 is to be transferred.

The terminal 10 remotely transmits a transfer command for transferring the insulation box in the cargo hold or the central control room. That is, the terminal 10 sends a transport instruction to the line tracer 20, which carries the insulation box to the line tracer 20 and transports it to each partitioned layer of the cargo hold.

This transfer command includes the position information of the heat insulating box so that the heat insulating box is sequentially distributed. The transfer command has information on the movement position of the heat insulating box so that a required number of the heat insulating boxes are distributed to the divided one of the cargo holds, and then the required number of the heat insulating boxes are distributed to the other floors.

The insulation box may also be distributed sequentially along the perimeter of the cargo hold or distributed according to the entered schedule. In other words, the position information included in the transfer command may include the position (X, Y coordinate value) information at which the insulating box should be moved in one layer, and may also include the height information (Z coordinate value) have.

This location information may be either an absolute coordinate value or a relative coordinate value for the cargo hold.

FIG. 2 is a schematic view illustrating a state in which an elevator according to a preferred embodiment of the present invention is elevated according to the transfer of a heat insulating box of an LNG cargo hold, and FIG. 3 is a cross- FIG. 4 is a schematic view illustrating the transportation of a heat-insulating box of a line tracer and an elevator of an LNG cargo hold according to a preferred embodiment of the present invention. Referring to FIG.

As shown in Figs. 1 to 4, a resin coating apparatus 15 is prepared on one layer of the cargo hold. The resin coating device 15 is provided on one side of the cargo window by applying resin to one surface of the heat insulating box 1. [

On the other hand, the heat insulating box 1 is supplied to the resin coating apparatus 15 of the cargo hold using a truck or a forklift, and the resin coating apparatus 15 is provided with a heat insulating box coated with resin A conveyor (not shown) is provided to be moved to the line tracer 20.

Since the present invention relates to a transfer device and a transfer method of a heat insulating box, a detailed description of the resin applicator 15 will be omitted.

The line tracer 20 analyzes (detects) the transfer command received by the communication unit 21, the communication unit 21 that receives the transfer command transmitted from the terminal 10, determines the transfer position of the heat insulating box, And a drive unit 23 for moving the heat insulating box 1 to a transfer position in accordance with a drive command of the control unit 22. The control unit 22 controls the transfer of the heat insulating box 1 to the transfer position.

Further, a tracking line 24 is formed on each layer of the cargo hold so that the line tracers 20 are moved along a constant path. The trace line 24 allows the line tracer 20 to travel along a given path, and can be a color tape or a magnetic tape having a specific color.

The line tracer 20 is equipped with a conveyor 25 for conveying the insulation box 1 to the resin application device 15 or the elevator 30. [ 4, the conveyor 25 of the line tracer 20 is not only loaded with the heat insulating box 1 conveyed from the conveyor of the resin application device 15 but also the heat insulating box 1 ) To the conveyor (31) of the elevator (30).

That is, the conveyor 25 of the line tracer 20 and the conveyor 31 of the elevator 30 are driven to convey the heat insulating box by driving the conveyors 25 and 31 adjacent to each other, and the heat insulating box 1 Is conveyed from the conveyor (25) of the line tracer (20) to the conveyor (31) of the elevator (30).

The heat insulating box 1 is moved from the conveyor of the resin application device 15 to the conveyor 25 of the line tracer 20 and loaded on the conveyor 25 of the line tracer 20.

The elevator 30 lifts and lowers each layer of the cargo hold, and the elevator 30 is equipped with a conveyor 31 for conveying and loading the heat insulating box 1. The communication unit 21 of the line tracer 20 can wirelessly communicate with the elevator 30 as well as wirelessly communicate with the terminal 10. [ Accordingly, the elevator 30 also has a communication unit (not shown).

The schedule for distributing the heat insulating box 1 to each floor can be input to the elevator 30 in advance or in real time. The storage box 1 is distributed according to the inputted schedule of the elevator 30 when the number of the floors and the number of conveying times desired to distribute the insulation box are inputted.

Fig. 2 shows a state in which the elevator 30 is moved to the corresponding layer in which the resin application device 15 is installed. Fig. 3 shows a state in which the elevator 30 is installed in a layer not provided with the resin application device 15, And is lowered to another layer to be moved.

These schedules can be input to the elevator 30 in order of 6th, 7th, 4th, 5th and 9th floors, and at least one line tracer 20 is distributed to each floor of the cargo hold.

Referring to FIG. 5, a method of conveying a heat insulating box of an LNG cargo hold according to a preferred embodiment of the present invention will be described in detail.

FIG. 5 is a flowchart illustrating steps of a method for transferring a heat insulating box of an LNG cargo hold according to a preferred embodiment of the present invention.

As shown in Figs. 1 to 5, a resin coating device 15 for applying resin to one side of a heat insulating box 1 transferred from a truck or a forklift is installed on the sixth floor of the cargo hold. It is needless to say that the resin coating apparatus 15 may be installed in another layer such as a 7th layer, a 4th layer and the like.

The resin coating device 15 applies resin to one surface of the heat insulating box 1 (S10).

This resin application work is continuously carried out. Three to six heat-insulating boxes coated with resin are stacked on the conveyor of the resin coating device 15 (S20).

It is preferable that four insulating boxes are stacked on this conveyor.

On the other hand, the terminal 10 sends a transfer command for transferring the insulation box to the line tracer 20, and the line tracer 20 receives the transfer command of the terminal 10 through the communication unit 21 (S30 ).

The line tracer 20 moves along the trace line 24 to the resin application device 15 to transfer the heat insulating box. The heat insulating box 1 is driven so that the conveyor of the resin application device 15 and the conveyor 25 of the line tracer 20 are adjacent to each other and the heat insulating box 1 is loaded on the line tracer 20 .

The line tracer 20 on which the heat insulating box 1 is loaded analyzes the transfer command to check the transfer position of the heat insulating box 1 (S40).

If the conveying position of the heat insulating box 1 is not six layers provided with the resin application device 15, the heat transfer box 1 is moved toward the elevator 30 (S50).

The line tracer 20 wirelessly checks whether or not the elevator 30 can be used and waits until the elevator 30 can be used at the entrance of the elevator 30 when the elevator 30 can not be used (S60).

The elevator 30 ascends and descends to the floor on which the heat insulating box is to be moved in a state where the heat insulating box 1 is loaded according to the inputted schedule. That is, the elevator 30 first distributes the insulation box 1 to the six-story building where the resin application device 15 is installed, and then distributes the insulation box to the seventh floor according to the schedule. Then, the heat insulating box 1 is distributed to the fourth floor, and then the heat insulating box 1 is distributed to the fifth floor.

On the other hand, the line tracer 20 reaches the sixth floor of the elevator 30 to check whether the elevator 30 can be used (S70). The availability of the elevator 30 is verified by wireless communication between the line tracer 20 and the elevator 30. [

The control unit 22 of the line tracer 20 drives the conveyor 25 to convey the heat insulating box 1. At this time, the conveyor 31 of the elevator 30 And the heat insulating box 1 is loaded on the conveyor 31 of the elevator 30 (S80).

When the heat insulating box is loaded on the elevator 30, the elevator 30 is elevated to the corresponding floor according to the inputted schedule (S90).

The elevator 30 is elevated to the corresponding floor and then the insulation tray is transferred to the conveyor 25 of the line tracer 20 in the corresponding layer, And moves to the transfer position according to the position information.

If the conveying position of the heat insulating box is six in step S40, the line tracer 20 drives the driving unit 23 in the control unit 22 to move to the conveying position (S100).

The line tracer 20 thus moved moves the heat insulating box 1 to a conveyor (not shown) at a transfer position (S110).

As described above, the heat insulating box 1 is moved to the conveying position of the layer by the line tracer 20, and when the conveying position of the heat insulating box 1 is another layer, the elevator box 30 is moved up and down by the elevator 30 And then transferred to the conveying position of the next heat insulating box (1).

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

10: Terminal 15: Resin application device
20: line tracer 21:
22: control unit 23:
24: Tracking line 25: Conveyor
30: Elevator 31: Conveyor

Claims (11)

A terminal for transferring a transfer command of the insulation box remotely,
A line tracer for loading and transporting the heat insulating box according to a transfer command transmitted from the terminal,
And an elevator for moving up and down to a layer for moving the heat insulating box loaded on the line tracer. The method according to claim 1,
Wherein the transfer command includes information on the movement position of the heat insulating box. The method according to claim 1,
Wherein the line tracer comprises: a communication unit for receiving the transfer command;
A control unit for analyzing a transfer command received by the communication unit to determine a transfer position of the heat insulating box and controlling the transfer of the heat insulating box to the determined transfer position,
And a drive unit that moves the heat insulating box to the transporting position in accordance with a drive command set by the control unit. (a) receiving a transfer command transmitted from a terminal in a state in which an insulating box coated with a resin is loaded in a line tracer,
(b) determining a transfer position of the heat insulating box according to the transfer command,
(c) moving the stacked heat insulating box to a position of an elevator so that the heat insulating box is transported to a layer to be transported when the transporting position is other layer,
(d) loading the heat-insulating box loaded in the line tracer into the elevator,
(e) moving to the transfer position when the transfer position is the current layer as a result of the determination in step (b)
(f) the line tracer moved to the transfer position includes lowering the heat insulating box. 5. The method of claim 4,
In the step (a), (a1) the heat insulating box includes a step of applying resin to one side of the heat insulating box by a resin application device. 6. The method of claim 5,
(A2) after the step (a1), the heat insulating box is loaded on the conveyor of the line tracer by the conveyor of the resin application device. 5. The method of claim 4,
Wherein, in the step (a), the transfer command includes position information on which the line tracer is to be moved. 5. The method of claim 4,
And (c) in the step (c), moving the line tracer toward the elevator. 9. The method of claim 8,
After step (c1), (c2) the line tracer includes determining whether the elevator is usable,
And if the elevator is not available, the line tracer is waiting at the elevator entrance. ≪ RTI ID = 0.0 > 8. < / RTI > 10. The method of claim 9,
The method of claim 1, wherein the step (c2) further comprises: (c3) moving the elevator to the corresponding bed in accordance with an inputted schedule in a state in which the elevator box is loaded. 5. The method of claim 4,
The method of claim 1, further comprising raising and lowering the layer to move the heat insulating box loaded in the elevator in the step (d).

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