KR20110065145A - Transporting device for insulating panel - Google Patents

Abstract

PURPOSE: A transporting device for insulating panels is provided to reduce time to construct a liquefied natural gas carrier by minimizing a transporting time of a heat insulating panel. CONSTITUTION: A transporting device for insulating panels comprises a carrier body(130), a plurality of ropes(140), and a plurality of winches. The heat-insulating panel is loaded on the carrier body. A plurality of ropes is connected detachably to the edge part of the carrier body in radial shape. A plurality of winches is installed at the exterior of a hull(110) or storage tank of the liquefied natural gas carrier. A plurality of winches varies the location of the carrier body by adjusting the length of each rope.

Description

Insulation Panel Feeder {TRANSPORTING DEVICE FOR INSULATING PANEL}

The present invention relates to a heat insulation panel transfer apparatus, and more particularly, to a heat insulation panel transfer apparatus attached to the outer surface of the storage tank mounted on the liquefied natural gas carrier of the independent tank method.

Natural gas refers to a flammable gas containing hydrocarbons as a main component in gas produced naturally. Until the development of long-distance transport of natural gas, natural gas was used as fuel only near the field. However, with the development of the technology of transporting natural gas using pipelines and the drying technology of liquefied natural gas (LNG) carriers that liquefy and transport natural gas, countries using natural gas have increased.

Currently, natural gas is widely used in various fields around the world, such as used as fuel for domestic fuel, public transportation fuel, power generation or industrial gas boiler. Therefore, as the use of natural gas increases, energy resources in accessible regions are being depleted faster.

However, with the reduction of glaciers due to global warming, access to the Arctic seabed has been enabled, and the movement of countries to develop resources such as a large amount of crude oil and natural gas buried in the Arctic has been active. In addition, the demand for liquefied natural gas carriers for the smooth transportation of liquefied natural gas is increasing all over the world, and in particular, the necessity of high-performance liquefied natural gas carriers capable of navigating the polar regions is increasing. .

Here, liquefied natural gas carriers are roughly divided into independent tank type and membrane type according to the type of storage tank for storing liquefied natural gas. Among these, the independent tank method has a disadvantage in that the drying cost of the liquefied natural gas carrier is higher than that of the membrane type, but the sloshing effect of the liquefied natural gas loaded in the storage tank can be reduced, and the safety and reliability are excellent. You can get a star.

Therefore, it is advantageous to apply the independent tank method to the storage tank of the liquefied natural gas carrier that operates the polar.

1 is a partial cross-sectional view of a liquefied natural gas carrier of the independent tank type.

Referring to FIG. 1, a storage tank 120 is mounted in a storage tank installation space 112 formed in the hull 110 in an independent tank type liquefied natural gas carrier 100. The storage tank 120 is usually provided in plurality, a bulkhead 111 is installed between each storage tank 120.

A tank dome 129 may be installed at an upper portion of each storage tank 120 to install a pump device (not shown) for discharging liquefied natural gas into the storage tank 120.

On the other hand, the independent tank storage tank 120 is manufactured separately from the outside of the liquefied natural gas carrier 100, and is loaded in the storage tank installation space 112. Thereafter, an insulating panel (not illustrated) is attached to a space between the hull 110 and the partition wall 111 and the storage tank 120, that is, the outer surface of the storage tank 120. The shape of the heat insulation panel will be described with reference to FIGS. 2 to 4.

2 to 4 illustrate insulating panels having various shapes attached to the outer surface of the independent tank storage tank 120.

2 illustrates an example of the planar heat insulation panel 10.

The planar heat insulation panel 10 is attached to the flat portion of the outer surface of the storage tank (see 120 of FIG. 1). Here, the length, width and thickness of the planar insulation panel 10 may be changed according to the shape of the storage tank (see 120 of FIG. 1).

3 illustrates an example of the two-way insulation panel 20.

The two-way insulation panel 20 is attached to the corner portion of the outer surface of the storage tank (see 120 of FIG. 1). Here, the thickness of the two-way insulation panel 20, the angle between the surfaces forming each corner, the shape of the contact surface with the storage tank (see 120 of FIG. 1), etc., depending on the shape of the storage tank (see 120 of FIG. 1) can be changed.

4 illustrates an example of the three-way insulation panel 30.

The three-way insulation panel 30 is attached to the vertex portion of the outer surface of the storage tank (see 120 of FIG. 1). Here, the thickness of the three-way insulation panel 30, the angle between the surfaces forming each vertex and the shape of the contact surface with the storage tank (see 120 of FIG. 1), etc., depending on the shape of the storage tank (see 120 of FIG. 1) can be changed.

The insulation panels described with reference to FIGS. 2 to 4 (10 of FIG. 2, 20 of FIG. 3, and 30 of FIG. 4) may have various shapes depending on the position where they are attached to the storage tank (see 120 of FIG. 1). As an example for explaining that the present invention is not intended to limit the shape of the heat insulation panel mentioned herein.

For the convenience of description, except for special cases, a planar insulation panel (see 10 of FIG. 2), a two-way insulation panel (see 20 of FIG. 3), and a three-way insulation panel (see 30 of FIG. 4) may be used. It will be referred to collectively as 'insulation panel'.

FIG. 5 is an enlarged view of a portion indicated by A in FIG. 1.

Referring to FIG. 5, a plurality of stud bolts 127 for attaching an insulation panel (see 10 of FIG. 2) are installed on an outer surface of the storage tank 120. The partition 111 is provided with a chief plate 113 for moving the worker. And, although not shown, the chief plate is also installed between the storage tank 120 and the side of the hull (see 110 of FIG. 1).

Here, the space W between the storage tank 120 and the partition wall 111 is usually about 1 m, and the width Ws of the patriarchal plate 113 is usually less than 60 cm. Therefore, since the space between the storage tank 120 and the partition wall 111 is narrow, the worker carries or attaches to the storage tank 120 (see FIG. 2, FIG. 10, FIG. 20, and FIG. 4, 30). There are many difficulties in doing the work.

In particular, the insulation panel (see 20 of FIG. 3 and 30 of FIG. 4) attached to the corner or vertex portion of the storage tank 120 should be carried to the edge of the storage tank 120. Accordingly, an accident such as musculoskeletal disease is caused in the process of transporting the insulation panel (see 20 of FIG. 3 and 30 of FIG. 4) or falls into the space between the chief plate 113 and the storage tank 120. There is a disadvantage that it is more likely to occur.

The present invention has been made to solve the above disadvantages, an object of the present invention is to be able to transfer the insulation panel to the required position safely and quickly.

In order to achieve the above object, according to an aspect of the present invention, as a heat insulation panel transport apparatus attached to the outer surface of the storage tank mounted on the liquefied natural gas carrier, a carrier on which the heat insulation panel is loaded, and the edge of the carrier A plurality of ropes detachably connected radially and a plurality of winches installed on the outer surface of the hull or storage tank of the liquefied natural gas carrier to change the position of the carrier by adjusting the length of each of the plurality of ropes. An insulation panel feeder is provided.

The plurality of winches may be distributedly installed on the inner top and bottom of the hull.

The carrier may further include a plurality of brackets for fixing the insulation panel.

The heat insulation panel conveying apparatus may further include a plurality of pulleys that are detachably installed on an outer surface of the hull or the storage tank and guide each of the plurality of ropes.

According to the present invention, by quickly transferring the insulation panel to a required position using a carrier whose position is controlled by a rope, it is possible to reduce an injury and an accident of an operator and to shorten the time required for drying a LNG carrier.

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

FIG. 6 is a cross-sectional view taken along the line X-X 'shown in FIG.

Referring to FIG. 6, the carrier 130 whose position is controlled by the plurality of ropes 140 is installed to be moved along one side 121 of the storage tank 120.

For reference, the hull 110 of the liquefied natural gas carrier (see 100 of FIG. 1) is manufactured in duplicate. Therefore, looking at the cross section perpendicular to the longitudinal direction of the LNG carrier (see 100 in FIG. 1), the hull 110 has an outer hull 113 forming an outer surface and an inner surface forming an inner surface of the hull 110. It consists of the hull 115. Between the outer hull 113 and the inner hull 115, a variety of reinforcing material is installed and a space used as a ballast tank (ballast tank) is formed, which is well known matters and will not be described.

The storage tank 120 is mounted in the inner hull 115, as mentioned in the description with reference to FIG. 5, between the inner hull 115 and the storage tank 120 (10, 3 of FIG. 2). 20, see FIG. 4, 30) is formed.

On the other hand, one end of each of the plurality of ropes 140 is connected to the edge portion of the carrier (130). By adjusting the length of each of the plurality of ropes 140 may change the carrier 130 to a desired position. Accordingly, the other end of each of the plurality of ropes 140 is connected to a winch (not shown) for winding or unwinding the rope 140 to adjust its length. That is, since one winch (not shown) is installed at the other end of each rope 140, the number of winches (not shown) is equal to the number of ropes 140.

In this case, a plurality of winches (not shown) are installed in the hull 110. However, the plurality of winches (not shown) may be installed on the outer surface of the storage tank 120, but this will be described later.

On the other hand, the range in which the carrier 130 can be moved is changed according to the position where a plurality of winches (not shown) are installed. Therefore, a plurality of winches (not shown) should be installed in consideration of the range in which the carrier 130 will be moved.

That is, as in the present embodiment, when the plurality of winches (not shown) are evenly distributed and installed on the inner upper and lower portions of the hull 110, the carrier 130 may have all of the one side 121 of the storage tank 120. The position can be moved. Therefore, a plurality of winches (not shown) are installed in consideration of the area to which the insulation panel (10 in FIG. 2, 20 in FIG. 3, 30 in FIG. 4) should be transported, wherein each of the plurality of winches (not shown) The length of the plurality of ropes 140 that can be unwound at maximum should also be considered.

In addition, in order to prevent the carrier 130 from shaking in a direction perpendicular to one side 121 of the storage tank 120, that is, in the longitudinal direction of the hull 110, a plurality of winches (not shown) may be mounted on the hull ( It may also be installed slightly shifted in the longitudinal direction of 110).

For example, in more detail, assuming that the number of winches (not shown) is eight, four winches (not shown) are located on both sides of the upper portion of the hull 110 and the remaining four winches (not shown). Distribute one pair each of the lower both sides of the hull 110 is installed. That is, a pair is installed on the upper one side, the upper other side, the lower one side and the lower other side of the hull 110, respectively.

And, one of the pair of winches (not shown) is installed close to one side 121 of the storage tank 120, the other one is installed close to the partition (refer to 111 of Figure 5). That is, a pair of winches (not shown) distributed in the same direction are also installed in different positions when the longitudinal direction of the hull is referred to.

In this way, a plurality of winches (not shown) are distributed in the longitudinal direction of the hull 110 as well as in a direction parallel to one side 121 of the storage tank 120, the direction in which the carrier body 130 will be moved Shaking in the outward direction can be prevented.

On the other hand, when the heat insulating panel (see 10 of FIG. 2, 20 of FIG. 3, 30 of FIG. 4) using the carrier 130, the carrier 130 should be able to be moved to the correct position. As such a method, there is a method of moving the carrier 130 by operating a plurality of origins (not shown) while the operator directly visually confirms the position of the carrier 130.

However, as described with reference to FIG. 5, since the space in which the carrier 130 is moved is narrow, it may not be easy for an operator to visually check the position of the carrier 130.

Therefore, each of the plurality of winches (not shown) may be provided with a tension measuring sensor (not shown) for measuring the tension applied to each of the plurality of ropes (140). A plurality of ropes may be loaded by a load of a heat insulating panel (see 10 of FIG. 2, 20 of FIG. 3, and 30 of FIG. 4) loaded on the carrier 130 and the carrier 130 using a tension sensor (not shown). 140) by measuring the tension applied to each of the, and by varying the database of the load applied to each of the plurality of ropes 140 according to the position of the carrier 130, it is possible to determine the exact position of the carrier 130. .

Alternatively, a method of determining a spatial position of the carrier body 130 may be used by installing a device (not shown) for measuring the length of each of the plurality of ropes 140 unwinded on each of the plurality of winches (not shown). .

However, since the rope 140 may change in length depending on the temperature and the tension applied to the rope 140, grasp the properties such as the elongation of the rope 140 due to climatic conditions and tension, such as seasonal differences. Should be able to correct the error.

In addition, when an excessive tension is applied to the rope 140, a warning signal may be issued by the operator so that the worker can grasp this, and an accident due to the breakage of the rope 140 may be prevented.

In this way, the heat insulating panel (20 of FIG. 1, 30 of FIG. 2, and 40 of FIG. 3) may be transferred to a desired position by using the carrier 130 that can move to a desired position. The structure of the carrier 130 on which the insulation panel (see 20 of FIG. 1, 30 of FIG. 2, and 40 of FIG. 3) is loaded will be described in more detail with reference to FIG. 7.

FIG. 7 is an enlarged view of a portion denoted by B in FIG. 6.

Referring to FIG. 7, a plurality of heat insulation panels 10 are mounted on the carrier body 130. On one side or both sides of the carrier 130, an opening 135 for loading and unloading the heat insulation panel 10 to the carrier 130 is formed.

The carrier 130 is provided with a plurality of rope connecting portions 131 to which the plurality of ropes 140 are connected. The rope connection part 131 is installed at an edge portion of the carrier body 130. This is because the rope connection portion 131 is located at the edge of the carrier 130, it is easy to maintain the balance of the carrier 130 by using a force applied to the carrier 130 by the tension of the plurality of ropes 140 Because.

The rope connecting portion 131 detachably connects the rope 140 from the carrier 130. Although not shown, the detachable coupling of the rope 140 and the rope connecting portion 131 may be implemented by various methods such as a method using an eyebolt and a shackle.

And, since the rope connection portion 131 should be able to smoothly change the direction of the connected rope 140, it is possible to use a method such as rotatably install the eye bolt (not shown) or the like in the horizontal direction.

Meanwhile, as illustrated, a plurality of brackets 134 may be installed at both inner sides of the carrier 130 to support the stacked insulation panel 10. This is to ensure that when the specifications of the insulation panel 10 are different from each other, it is possible to take out what is loaded below. In addition, when the carrier 130 is slightly inclined due to the balance between the shaking and the carrier 130 generated while moving, the insulation panel 10 may be prevented from being separated out of the carrier 130.

However, in addition to the planar heat insulation panel 10, the carrier body 130 may also have heat insulation panels (see 20 of FIG. 3 and 30 of FIG. 4) having other shapes. This will be described with reference to FIG. 8.

8 shows a variant of the carrier.

Referring to FIG. 8, the three-way insulation panel 30 is mounted on the carrier body 130a. The three-way insulation panel 30 is not used much in comparison with the planar insulation panel (see 10 of FIG. 2). However, since the three-way insulation panel 30 is attached to the outer surface of the vertex portion of the storage tank (see 120 of FIG. 1), the distance to be transported is relatively far.

In addition, the two-way insulation panel 20 is also not used in a large amount compared to the planar insulation panel (see 10 in FIG. 2), but should be transported to the edge of the storage tank (see 120 in FIG. 1). Distance is relatively far.

Accordingly, the carrier 130a is for transporting the two-way insulation panel (see 20 of FIG. 3) and the three-way insulation panel 30. The carrier described with reference to FIG. 7 (see 130 of FIG. 7) and a method of use are as follows. same. However, in the case of a two-way insulation panel (see 20 in FIG. 3), in order to be able to load a large number, a partition or shelf bracket not shown may be additionally installed.

As described above, since the rope 140 is detachably connected to the rope connecting portion 131, the carrier 130a and the carrier described with reference to FIG. 7 (see 130 of FIG. 7) may be used interchangeably.

For reference, as the rope 140, both a wire rope made by twisting steel wires with fiber ropes and fibers such as cotton, hemp, and synthetic fibers can be used. However, in consideration of the load of the carrier body 130a, the longest length of the rope 140, the elongation rate of the rope due to tension, the working environment, and the like, a suitable one is selected and used.

On the other hand, the heat insulation panel transfer apparatus according to the first embodiment of the present invention transfers the heat insulation panel attached to the upper surface of the storage tank (see 120 of FIG. 1) as well as the side of the outer surface of the storage tank (see 120 of FIG. 1). Applicable to This will be described with reference to FIG. 9.

9 shows a state of transferring the heat insulation panel to be attached to the upper surface of the storage tank by using the heat insulation panel transport apparatus according to the first embodiment of the present invention. However, the cross-section of the hull 110 is shown simply for convenience.

9, the carrier 130 is positioned on the upper surface 123 of the storage tank 120 by a plurality of ropes 140. One end of each of the plurality of ropes 140 is radially connected to the edge portion of the carrier 130. And, the other end of each of the plurality of rope 140 is provided with a plurality of winch 160 for adjusting the length of the rope 140, respectively.

At this time, as shown, the plurality of winch 160 may be installed on the upper surface 123 of the storage tank 120. The winch 160 may be installed at various positions as necessary, such as the inner hull 115 and the side of the storage tank 120, but as shown in the upper surface 123 of the storage tank 120, the winch 160 Since it is easy for an operator to access, installation and dismantling of the winch 160 becomes convenient.

However, when the position of the winch 160 is lower than the carrier 130, the carrier 130 may not be moved in a state slightly spaced apart from the upper surface 123 of the storage tank 120. Therefore, by installing a plurality of pulleys 150 for guiding the plurality of ropes 140, the plurality of ropes 140 to the carrier 130 in a direction that is easy to maintain the movement and balance of the carrier 130 Can be connected.

For reference, as described with reference to FIG. 6, the plurality of winches 160 and the plurality of pulleys 150 may be formed on the outer surface of the hull 110 or the storage tank 120 in consideration of the moving range of the carrier 130. It can be installed at any location. To this end, the plurality of winches 160 and the pulley 150 should be detachably installed on the outer surface of the hull 110 or the storage tank 120.

In such a removable coupling, a stud bolt (not shown) is installed on the outer surface of the hull 110 or the storage tank 120, and the plurality of winches 160 and the plurality of pulleys 150 are nuts (not shown). Can be used to connect.

Then, the outer surface of the hull 110 or the storage tank 120 is damaged by interposing a rubber plate in a portion where the plurality of winches 160 and the plurality of pulleys 150 and the hull 110 or the storage tank 120 are coupled to each other. It can be prevented, and the noise generated in the work site by the vibration generated by the plurality of winch 160 can be prevented.

As described above, the insulation panel (see 10 of FIG. 2) to be attached to the upper surface of the storage tank 120 is transferred by using the carrier 130, so that the worker directly carries the insulation panel (see 10 of FIG. 2) and transports it. It can save the time required, and can prevent workers from causing musculoskeletal diseases.

Although the heat insulation panel transfer apparatus according to an embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention are within the scope of the same idea. In the above, other embodiments may be easily proposed by adding, changing, deleting, or adding a component, but this is also within the scope of the present invention.

1 is a cross-sectional view of an independent tank type LNG carrier.

2-4 are perspective views of examples of various insulation panels.

5 is a perspective view of a portion indicated by A in FIG. 1.

6 is a front view of one use example of the first embodiment of the present invention;

FIG. 7 is an enlarged perspective view of a portion indicated by B of FIG. 6; FIG.

FIG. 8 is a perspective view of a modification of the carrier shown in FIG. 7. FIG.

9 is a perspective view of another use example of the first embodiment of the present invention;

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

10, 20, 30: insulation panel 110: hull

120: storage tank 130: carrier

140: Rope 150: Pulley

160: winch

Claims (6)

A device for transferring an insulation panel attached to an outer surface of a storage tank mounted on a LNG carrier, A carrier on which the insulation panel is loaded; A plurality of ropes detachably connected radially to an edge portion of the carrier; And Insulating panel transport apparatus is installed detachably to the hull of the liquefied natural gas carriers or the outer surface of the storage tank, a plurality of winches for changing the position of the carrier by adjusting the length of each of the plurality of ropes. The method of claim 1, The plurality of winches are insulated panel dispersing device is installed on the inner upper and lower portion of the hull. The method of claim 2, The number of the plurality of ropes and the plurality of winches are each eight, the eight winch is a pair of heat insulation panel characterized in that the pair is installed on each of the inner upper both sides and the inner lower both sides of the hull. The method of claim 3, wherein The pair of winches are characterized in that the insulation panel transport apparatus, characterized in that installed in different positions based on the longitudinal direction of the hull. The method of claim 1, The carrier, And a plurality of brackets installed in the carrier to fix the insulating panel. The method of claim 2, Insulated panel is detachably installed on the outer surface of the hull or the storage tank, further comprising a plurality of pulleys for guiding each of the plurality of ropes.

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