KR20080106794A - Thermo-insulation tank improved fixing structure of thermo-insulation wall, the liquefied gas carrier having cargo tank using thereof, and fixing apparatus for driving the fasteners - Google Patents

Abstract

An insulation tank for the fluid storage is provided to improve the installation quality and intensity by improving the installation structure of the anchorage for fixing the insulation wall. An insulation tank in which the insulation wall fixed structure is improved comprises: a cell(210) making the whole outer body of the structure; an insulation layer(330) which is made of more than one layer and is installed inside the cell; an anchorage(400) fixing the insulation wall on the inner wall surface; and a fastener which is coupled with the anchorage and restricting the insulation wall.

Description

Thermo-insulation tank improved fixing structure of thermo-insulation wall, the liquefied gas carrier having cargo tank using the insulation tank with improved insulation wall fixing structure, liquefied gas carrier with cargo hold using the same , and fixing apparatus for driving the fasteners}

1 is a cross-sectional view of an essential part showing a heat insulating wall fixing structure of a conventional heat insulating tank.

Figure 2 is an enlarged view of the main part of Figure 1 showing a welding state of a conventional anchorage.

Figure 3 is a cross-sectional view of the main part showing an embodiment of the insulating wall fixing structure of the insulating tank according to the present invention.

4 is a view showing a preferred embodiment of the anchorage according to the present invention.

5 is a process chart showing the installation process of the fixing unit according to the present invention.

6A is a view illustrating one of known tableting apparatuses as an example of a tableting apparatus for striking a fixing device according to the present invention.

6B is a perspective view of an essential part showing a tableting device according to the present invention;

6C is a front view of FIG. 6B.

7A is a view showing an example of the arrangement form of the cargo hold of the liquefied gas carrier according to the present invention.

7B is a cross sectional view of the cargo hold of FIG. 7A.

8A is a view showing another example of the arrangement form of the cargo hold of the liquefied gas carrier according to the present invention.

8B is a cross sectional view of the cargo hold of FIG. 8A.

9 is a cross-sectional view of the main part showing a fixed structure of the cargo hold of the liquefied gas carrier according to the present invention.

10 is an enlarged view of a portion of the anchorage of FIG. 9.

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

100: insulated tank 200, 210: shell

200a, 210a: inner wall surface 300: insulation wall

310: inner sealing panel 320: first rigid panel

330: heat insulation layer 330a: hole

331: First insulation layer 332: Intermediate sealing panel

333: second insulating layer 334: plug

340: second rigid panel 350: support pad

360: plug 400: anchorage

410: fastening portion 420: pillar portion

430: peak 440: sheet plate

500: fastener 600: tableting device

610: barrel 620: gunpowder

630: piston 640: trigger

650: tilt detection sensor module 651: wiring

660: tilt control module 661: display unit

670: triggering actuator 671: retraction rod

The present invention relates to a heat insulating tank for storing a fluid such as liquefied gas, and more particularly, to improve the installation structure of the fixing fixture for fixing the heat insulating wall of the heat insulating tank so that the installation work of the fastener is quick and easy. For the storage of liquefied gas to be structurally stable and shorten the manufacturing period by using the insulation tank with improved insulation wall fixing structure and the improved insulation tank to improve the installation quality and strength. The present invention relates to a liquefied gas carrier having a cargo hold and a tableting device for striking the anchorage.

Insulated tanks for storing or transporting fluids such as liquefied natural gas (LNG), liquefied ammonia, liquefied petroleum gas (LPG), ethylene, crude oil, low temperature liquids, cryogenic liquids, etc. Wrapped with thick insulation (barrier) to maintain the fluid contained in the interior phase in the desired phase, it is designed to withstand the load, physical and chemical action of the fluid received.

Such a heat insulating tank is usually composed of a shell (shell) forming the outer periphery of the entire tank structure, and a heat insulating wall provided on the inner wall surface of the shell. The insulating wall serves to insulate the fluid contained therein and to transfer the load of the fluid to the shell and is fixed to the inner wall surface of the shell. A typical method of fixing the thermal insulation wall to the inner wall surface of the shell is to use anchorages. The anchorage is also called 'stud bolt', 'anchor' and 'fastener' and is pre-attached to the inner wall of the shell.

One conventional example of fixing a heat insulation wall using an anchorage is shown in FIG. 1. Figure 1 shows the use of a stud bolt-shaped anchorage among the various anchorages as an example, other anchorages are also different only in shape and shape, pre-welded to the shell 20 and later fasteners ( 30) is the same in technical terms of tightening. In addition, the structure of the shell and the heat insulating wall may be different from the illustrated example depending on the type of the fluid or the use and size of the tank, but the same in terms of the basic structure for accommodating the fluid and performing the heat insulation. Do.

As shown in FIG. 1, the thermal insulation tank 10 is composed of a shell 20 forming an outer portion of the tank structure and an insulation wall 30 disposed on the inner wall surface 20a of the shell 20. The heat insulating wall 30 may be, for example, an inner sealing panel 31 to which the contained fluid comes into contact, a first rigid panel 32 supporting the inner sealing panel 31, and a heat insulating layer 33 and a first insulating panel 31. Two rigid panels 34 and the like. The heat insulating tank 10 is a fixing unit 40 while the second rigid panel 34 of the heat insulating wall 30 maintains a predetermined distance from the inner wall surface 20a of the shell 20 by the support pad 35. Is fixed as). The fastener 50 is fastened to the fixing unit 40. The plug 36 is inserted into the hole 33a formed in the heat insulation layer 33 for the fastening of the fastener 50 to be sealed.

Here, the fixing unit 40 is installed on the inner wall surface 20a of the shell 20 before assembling the heat insulating wall 30. Specifically, as shown in FIG. 2, the fixing unit 40 is installed on the inner wall surface 20a of the shell 20 by welding, and is typically attached by stud welding, which is an automatic arc welding method. . That is, in the stud welding, when the switch is pulled in the state where the front end of the fixing unit 40 is brought into contact with the inner wall surface 20a of the shell 20 by inserting the fixing unit 40 in front of the welding gun (welding torch), The tip is slightly pulled up from the inner wall surface 20a and an arc is generated therebetween, and the inner wall surface 20a of the shell 20 and the tip of the anchorage 40 are locally melted by the generated arc so that the periphery of the anchorage 40 is around. It welds, forming the welding bead w in the welding.

When the fixing device 40 is attached by stud welding in this way, it is possible to weld the electric field in comparison with other welding methods, the welding deformation is small, the width of the weldable material is wide, and there is no need to make a hole in the base material, so that the welding is quick. There are advantages such as being possible. However, additional equipment such as a welding machine for supplying power to the welding gun is required. Ancillary equipment such as a welding machine is heavy and bulky and not portable, and requires preliminary work such as installation work and wiring work.

Therefore, there is a disadvantage that a lot of manpower and time for welding work. In addition, gases and substances that are harmful to humans are also generated during welding. In addition, the operator's professional certification is required, and the skill level has a great influence on the quality, the welding quality is affected by the weather or the humidity of the work space, there is a lot of fear that welding failure occurs. In particular, since the stud welding is a form in which the shell and the fixing unit are melted together, defects such as under cut or overlap may occur or cracks may occur in the welded portion. Failure to do so may cause deterioration of the reliability of the product.

The present invention was developed in order to solve the above problems, by dramatically improving the installation structure of the anchorage for fixing the heat insulation wall so that the installation work can be made quickly and easily, to improve the installation quality and strength It is an object to provide an insulating tank for storing and transporting a fluid.

On the other hand, by constructing a cargo tank for liquefied gas storage of the liquefied gas carrier using the improved insulated tank as described above, liquefaction such as the field of LNG carrier manufacturing where the challenges of structural stability and short delivery time have a significant impact on competitiveness It is another object of the present invention to continuously secure a technical advantage over other countries in the field of manufacturing gas carriers.

On the other hand, it is still another object of the present invention to provide a tableting device that enables easy and accurate hitting of the above-mentioned anchorage.

In order to achieve the above object, in the present invention, an insulating tank for receiving a fluid in the inner space, the shell forming the entire outline of the structure; An insulation wall made up of at least one insulation layer and installed inside the shell; Fixing fixture for fixing the heat insulation wall to the inner wall surface of the shell at various points; And a fastener coupled with the anchorage to restrain the heat insulating wall to the shell, wherein the anchorage portion is embedded with a tip portion thereof by striking the inner wall of the shell and the circumference thereof is formed by the shell's flesh. The insulation wall is fixed in a tightened state, and the insulation wall is fitted to the anchorage and is constrained to the shell by engaging the fastener at the protruding rear end of the anchorage. Insulation tanks are provided.

In addition, the present invention is provided with a liquefied gas carrier ship having a heat insulating tank as described above, the liquefied gas carrier ship according to the invention, including the bottom, the side and a plurality of transverse bulkheads forming a circumferential outer periphery of the cargo hold inside the cargo space A shell to form; And a heat insulating tank installed inside the space formed by the shell, wherein the heat insulating tank comprises: a heat insulating wall having one or more layers of heat insulating layers fixed to an inner wall surface of the shell; Fixing fixture for fixing the heat insulation wall to the inner wall surface of the shell at various points; And a fastener coupled with the anchorage to restrain the heat insulating wall to the shell, wherein the anchorage portion is embedded with a tip portion thereof by striking the inner wall of the shell and the circumference thereof is formed by the shell's flesh. It is settled in the tightened state, the heat insulating wall is characterized in that it is constrained to the shell by fastening the fastener at the protruding rear end of the fixing fixture and the fitting.

According to the insulated tank and the liquefied gas carrier of the present invention, unlike the conventional structure in which the anchorage is formed by assembling a hole in the shell in advance or attaching it by welding, the anchorage hits the anchorage and is embedded in the anchorage. Resistant strength is improved and welding deformation or welding defects are improved by having a configuration in which the shell's flesh tightens the circumference of the anchorage firmly by reaction force to dig and open. There's no need to worry and you can improve the quality. In addition, since the fixing device can be installed by a known portable tableting device, preliminary work such as electricity supply or wiring is unnecessary, and the fixing work becomes quick and easy.

In the heat insulation tank or liquefied gas carrier of the present invention, the heat insulation wall includes an inner sealing panel to which the contained fluid comes into contact, a first rigid panel supporting the inner sealing panel, and a first rigid panel. A heat insulation layer disposed on the outside, a second rigid panel disposed on the outside of the heat insulation layer and fixed to the shell by the fixing unit and the fastener while supporting the entire heat insulation wall, and disposed between the second rigid panel and the shell. It may include a support pad for transmitting the load of the insulating tank to the shell.

In the heat insulation wall of the heat insulation tank or the heat insulation wall of the liquefied gas carrier ship, the heat insulation layer includes a first heat insulation layer disposed outside the first rigid panel, an intermediate sealing panel disposed outside the first heat insulation layer, and And a second insulating layer disposed between the intermediate sealing panel and the second rigid panel, wherein the second insulating layer has a hole for fastening the fastener, and the hole has a plug for sealing after fastening the fastener. It may be made of a configuration to be inserted.

In the insulated tank or liquefied gas carrier of the present invention, it is preferable to form an uneven portion on the outer circumferential surface of the column of the anchorage which is embedded in the shell to increase the adhesion to the shell or the partition wall.

In the above-described insulation tank or liquefied gas carrier of the present invention, the fastener may be composed of one or more washers and one or more nuts.

In the liquefied gas carrier of the present invention, the liquefied gas carrier is an LNG carrier, and the inner sealing panel may be formed of a membrane of a corrugation type that can absorb heat deformation by corrugation.

On the other hand, in the present invention, there is provided a tableting device that is loaded with a fixing device for fixing the heat insulating wall of the heat insulating tank containing the fluid in the inner space to the inner wall surface of the shell, and is driven into the shell by a blow. The tableting device is mounted on one side of the body of the tableting device, and forms a series of signal connection relationships with the inclination sensing sensor module for sensing the inclination of the tableting device and the inclination sensing sensor module and is output from the inclination sensing sensor module. It includes a tilt control module for receiving the sensing signal and computerized to display the resulting value through the display.

Here, the tableting device is provided with a trigger for triggering on one side of the body, one side of the trigger, when the inclination value from the inclination detection sensor module is out of a predetermined reference value of the trigger by the tilt control module An anti-trigger actuator may be provided that operates in a direction of preventing the trigger.

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

3 is a cross-sectional view of an essential part showing an example of the insulation wall fixing structure in the insulation tank according to the present invention. As shown in FIG. 3, the insulation tank 100 for accommodating fluid in the inner space includes a shell 200 which forms the entire outline of the insulation tank structure, and one or more insulation layers to form the inside of the shell 200. Insulation wall 300 to be installed, the fixing unit 400 for fixing the insulating wall 300 to the inner wall surface 200a of the shell 200 at various points, and the heat insulating wall 300 by combining with the fixing unit 400 ) Includes a fastener 500 constraining the shell 200. The heat insulation wall 300 may be configured to include a heat insulation layer of at least one layer, or may be configured to include a heat insulation layer of several layers, such as a heat insulation wall in an LNG carrier. In FIG. 3, an example of having a single heat insulating layer 330 is illustrated.

The fixing unit 400 in the present invention is fixed in the form of being embedded in the inner wall surface 200a of the shell 200. That is, the fixing unit 400 is welded to the surface of the inner wall surface 200a of the shell 200 (for example, stud welding) or a hole is formed in the inner wall surface 200a of the shell 200 before insertion into the corresponding hole. Rather, it is applied by applying a strong impact, such as when nailing the fixing unit 400 against the inner wall surface (200a) of the shell 200. In the present specification, such a strong impact (hit or strike) to be beaten is referred to as so-called 'hit thrust'. The anchoring device 400 is driven by the hitting is inserted into the shell 200, the tip portion is to be very firmly fixed. That is, the fixing device 400 embedded in the shell 200 by hitting is fixed in a state where the circumference thereof is tightened by the shell 200. Specifically, when the anchorage 400 is embedded, the shell 200 is opened while digging in the flesh (肉), the skin (셸) of the shell 200 by the reaction force to try to open while digging in this way The peripheral portion of the 400 is tightened strongly (see the arrow in the enlarged portion of FIG. 3), and the fixing member 400 is firmly fixed by the tightening force.

As described above, in the present invention, the fixing unit 400 is configured to be fixed by hitting, so that not only the fixing strength is improved, but also problems such as welding deformation and welding defects that occur in the fixing structure by conventional welding may occur. Thereby, excellent fixing quality can be secured accordingly. In addition, the fixing device 400 can be easily installed by a mechanical blow by a known portable tableting device or a blowout by explosives, which will be described later. There is no need to install and the fixing operation can be made more quickly and easily.

In addition, the above-described heat insulating wall 300 is coupled to the fixing unit 400 fixed as described above. Specifically, the second rigid panel 340, which is one of the components of the thermal insulation wall 300, is combined to fix the entire thermal insulation wall 300. The fastener 500 described above is fastened to the rear end of the fixing member 400 protruding from the heat insulating wall 300 (specifically, the second rigid panel 340 to be described later), whereby the heat insulating wall ( 300 is firmly constrained (fixed) to the shell 200. In this embodiment, the fastener 500 includes a washer 510 and one or more nuts 520. The fastener 500 may use other types of fasteners in addition to the illustrated nut 520. In addition, the washer 510 may be omitted.

In the present exemplary embodiment, the heat insulation wall 300 may include, for example, an inner sealing panel 310 to which the received fluid comes into contact, a first rigid panel 320 supporting the inner sealing panel 310, and By the fixing unit 400 and the fastener 500, the heat insulating layer 330 disposed on the outside of the first rigid panel 320 and the heat insulating layer 330 are disposed on the outside of the first rigid panel 320 to support the entire heat insulating wall 300. A support pad 350 that is disposed between the second rigid panel 340 fixed to the shell 200 and the second rigid panel 340 and the shell 200 to transfer the load of the insulating tank and the fluid to the shell 200. ) May be included.

Herein, the inner sealing panel 310 may be made of stainless steel, an aluminum alloy, or the like, and may have a membrane (eg, a form of a membrane of Technigaz-Membrane, France). It is in the form of a membrane disclosed in 0325441). The first rigid panel 320 and the second rigid panel 340 may be formed of plywood, fiber reinforced plastic, or a laminate of plywood and fiber reinforced plastic. The support pad 350 may be made of cured resin or wood. In particular, as described above, the heat insulation wall 300 includes one or more heat insulation layers, and FIG. 3 shows a form of one heat insulation layer 330. The form including two or more insulating layers will be described later with reference to FIGS. 9 and 10. Naturally, the heat insulating wall 300 according to the present embodiment may also be formed of two or more heat insulating layers as shown in FIGS. 9 and 10. The heat insulation layer 330 may be made of foamed plastic or foamed resin.

Figure 4 shows a preferred embodiment of the fixing unit 400 described above. As shown, the fixing unit 400, from the rear end to the front end, consists of a form including a fastening portion 410, a pillar portion 420 and a peak portion 430. The fastener 410 has a form suitable for coupling the fastener 500. In this embodiment, a screw portion 411 for screwing the fastener 500 is formed. The peak part 430 is a part inserted first into the shell 200 or the partition wall. Tip of the tip 430 is made of a pointed shape is easy to hit. The pillar portion 420 is also inserted into the shell 200 or the partition wall. The seat plate 440 is fitted to the boundary portion between the peak portion 430 and the pillar portion 430. The seat plate 440 is pushed back by the force of the driving force to stay at the boundary between the fastening portion 410 and the pillar portion 420. When sealing between the fixing unit 400 and the shell 200 is required, the outer circumference of the sheet plate 440 and the shell 200 are sealed by soldering or the like, and the inner diameter of the sheet plate 440 and the fixing unit are sealed. Between the outer diameter circumference of 400 can be sealed by soldering or the like.

In particular, in the present invention, the uneven portion 421 may be formed on the whole or part of the pillar portion 420 to increase the fixing force (adhesive force) of the fixing unit 400. The uneven portion 421 may be formed by a known knurling process.

5 is a process diagram showing the installation process of the fixing unit 400 described above. As shown in FIG. 5, and as mentioned above, the anchorage 400 is driven using a known tableting device 600. In FIG. 5, an explosive explosive portable tableting device is shown as an example of the tableting device 600. In addition, a portable tableting device may be used by a mechanical impact force.

As shown in FIG. 5A, first, the fixing unit 400 is mounted on the barrel 610 of the tableting apparatus 600, and is marked in advance so as to display the fixing position (fixing point) of the shell 200. The markings). Subsequently, when the powder 620 is ignited as shown in FIG. 5B, the explosive force strikes the piston 630, and the fixing unit 400 moves forward by the force. As shown in (c) of FIG. 5, the anchorage 400 is hit by the sharp tip 430 of the shell 200 so as to penetrate the pillar 420. When the apex 430 and the pillar 420 of the anchorage 400 are infiltrated, the shell 200 is dug while digging in, and the reaction force generated against the force of the shell 200 is thus anchored. The tip portion of the 400, that is, the outer periphery of the peak portion 430 and the pillar portion 420 is tightened (to be pressed). High heat is generated when driving the anchorage 400, which heat reaches up to 900 ° C locally. As a result, there is a local fusing between the shell 200 and the surface of the anchorage 400, thereby making the adhesion stronger. On the other hand, when the concave-convex portion 421 is formed in the pillar portion 420, a locking action by the concave-convex portion 421 occurs at the interface between the surface of the shell 200 and the pillar portion 420 to maximize the adhesion. Subsequently, the heat insulation wall 300 is coupled to the fixing unit 400. That is, as shown in (d) of FIG. 5, the second rigid panel 340 is inserted into the fixing unit 400, and then the fastener 500, that is, the washer 510 and one or more nuts 520 are fastened. Fix it. The plug 360 is inserted into the hole 330a formed in the heat insulation layer 330 to seal the nut 520.

6A, one of the well-known portable tableting apparatuses for hitting the fixing device 400 is shown. The portable tableting device is disclosed in Republic of Korea Patent Registration No. 10-0642564, Patent Registration No. 10-0404357, Patent Registration No. 10-0403650, Patent Registration No. 10-0393165, Patent Registration No. 10-0367677 And Patent Registration No. 10-0183996. The portable tableting device 600 shown in FIG. 6A shows, as one example, a powder explosive (or powder ignition operated) tableting device provided by Hilti, Hilti, Germany.

As shown in FIG. 6A, in the portable tableting device 600, the fixing unit 400 is mounted at the tip portion of the barrel 610 of the gun Gun. Gunpowder 620 is loaded in the gunpowder loading hole of the rear part of the barrel 610, and a piston 630 is installed in the front portion thereof so as to be able to move forward and backward. When the user pulls the trigger 640, the loaded gunpowder 620 explodes, and the piston 630 advances by the explosive force to hit the fixing unit 400. As described above, since the present invention has a configuration in which the anchoring device 400 is punched in, the well-known portable tableting device 600 can be used as it is. Since the portable tableting device 600 is a powder explosive method, as described above, it is easy to carry and does not require large and inconvenient equipment such as electricity and a welding machine therefor or additional equipment. Therefore, the operation is simple and the manufacturing time can be shortened. In addition, unlike conventional welding, it is hardly affected by environmental effects such as humidity, there is no risk of fire, and no harmful gas is generated. In addition, unlike welding does not require a professional certification, anyone can easily and safely use only a predetermined training. As a result, the present invention also enjoys the advantages of the portable tableting device as described above.

On the other hand, Figure 6b and Figure 6c is a perspective view of the main portion showing a tableting device according to a preferred embodiment of the present invention.

6C illustrates that the tableting apparatus 600 illustrated in FIG. 6B detects how much the tableting apparatus 600 is inclined in which direction, and notifies the operator, while triggering the trigger when the tilt value is out of a predetermined value. Disclosed is a tableting apparatus that can be prevented.

As shown in FIG. 6B, the tableting device 600 of the present invention includes a tilt detection sensor module 650 and a tilt control module 660. The tilt sensor module 650 is a known sensor module called 'tilt sensor', 'tilt detector', 'inclinometer', 'inclination sensor', 'tilt sensor' and the like. The tilt sensor module 650 is mounted on one side of the body of the tableting device 600 (upper end in the drawing), and detects how much the tableting device 600 is inclined in which direction. The tilt control module 660 includes a display 661, forms a series of electrical and signal connection relationships with the tilt detection sensor module 650 and the wiring 651, and the tilt detection sensor module ( The sensing signal output from 650 is received and computed, and the resultant value is displayed on the display 661. The operator can check the inclination value displayed on the display portion 661 before tableting, and first determine whether the value is within the working standard, so that the fixing device 400 can be driven more accurately. .

Next, as shown in FIG. 6C, the tableting apparatus 600 may further include a trigger prevention actuator 670 for limiting the operation of the trigger 640. The trigger prevention actuator 670 may be a solenoid actuator having a retraction rod 671. The trigger prevention actuator 670 forms a series of electrical and signal connection relationships with the tilt control module 660 and is controlled by the tilt control module 660. That is, when the inclination value detected from the inclination detection sensor module 650 is out of a preset reference value, the retraction rod 671 moves forward by the control of the inclination control module 660 to pull the trigger 640. It is prevented to prevent the triggering of the fixing unit 400.

As described above, when the tableting device 600 further includes an anti-trigger actuator 670 controlled by the tilt control module 660, the fixing device 400 detects a horizontal or vertical situation formed by the contact surface of the shell 200. In addition, when the detected value is out of a preset reference value, the trigger may be limited, thereby preventing the fixing unit 400 from being crooked. In addition, it is possible to implement a higher quality insulating tank by fixing the insulating wall to the fixing unit 400 fixed by the tableting device 600 as described above.

7A and 7B, 8A and 8B show examples of arrangement of cargo holds of liquefied gas carriers according to the second embodiment of the present invention, respectively. 7A and 8A show a layout example of a cargo hold of a liquefied natural gas (LNG) carrier among liquefied gas carriers. Typically, liquefied natural gas carriers are largely divided into a moss type (see FIG. 7A) and a membrane type (see FIG. 8A) according to the tank type. As shown in Figs. 7b and 8b, the cargo hold of the liquefied gas carrier is an outer shell (also referred to as 'outer shell') and an inner shell (also referred to as 'inner shell'). In the double-shell structure formed, the inner shell has a heat insulating tank having a double barrier (double heat insulating wall) structure having a first heat insulating wall and a second heat insulating wall. Here, the inner shell is composed of a bottom, a side and a plurality of transverse bulkheads, and the thermal insulation tank is installed in the inner space of such an inner shell. This inner shell serves as a structure in which the insulation tank is installed (contacted) in the same manner as the shell of the above-described embodiment. Therefore, in the present specification, both the above-mentioned 'shell' and the current 'inner shell' are collectively referred to as 'shell'.

9 is a cross-sectional view of the main part showing a fixed structure of the cargo hold of the liquefied gas carrier according to the present invention, and FIG. 10 is an enlarged view of the anchorage portion of FIG. Insulation tanks in the embodiment shown in Figures 9 and 10 are compatible with each other as a thermal insulation tank of substantially the same or equivalent configuration as the thermal insulation tank shown in FIG. That is, the heat insulation tank structure shown in FIG. 3 may be applied as the heat insulation tank structure of the liquefied gas carrier, and the heat insulation tank structure shown in FIGS. 9 and 10 may be applied as the heat insulation tank structure of FIG. The same components as in Fig. 3 will be described with the same reference numerals.

9 and 10, the liquefied gas carrier according to the present invention, including a bottom, a side and a plurality of transverse bulkheads forming a circumferential outer periphery of the hull cargo hold to form a cargo space therein (inner 210, inner) Shell). Inside the shell 210 is installed an insulating tank 100 for storing and transporting liquefied gas. The heat insulation tank 100 has a structure in which the heat insulation wall 300 thereof is fixed to the shell 210 by the fixing unit 400 and the fastener 500 as described above in the previous embodiment. In addition, the fixing unit 400 is also fixed to the front end portion of the shell 210 by hitting the inner wall surface (210a) of the shell is inserted into its periphery tightened by the flesh of the shell (210). . In addition, the heat insulation wall 300 is fitted to the fixing unit 400 and is constrained to the shell 210 by the fastener 500. As described above, according to the liquefied gas carrier of the present invention, the fixing unit 400 is not assembled or attached by welding in a state where holes are formed in the shell 210 in advance, but are embedded in the shell 210 by hitting. By entering and fixing, the fixing strength is improved, and there is no need to worry about welding deformation or welding defect, etc., and the fixing quality can be improved. In addition, since the fixing apparatus can be installed by a known portable tableting device, electricity supply is unnecessary, and the work is quick and easy. Therefore, by providing a cargo hold according to such a structure, it is possible to provide a liquefied gas carrier that is structurally stable and can shorten the manufacturing period. Such an advantage of the present invention is very innovative and competitive liquefied gas considering the situation of the shipbuilding industry in which the slight difference in quality (structural stability) and production time shortening has a significant impact on product competitiveness (quality, price competitiveness, etc.) It can be the basis for providing a carrier.

Meanwhile, as shown in FIGS. 9 and 10, the heat insulation wall 300 includes an inner sealing panel 310 to which the received fluid contacts and a first rigid panel supporting the inner sealing panel 310. 320, the heat insulation layer 330 disposed outside the first rigid panel 320, and the heat insulation layer 330 disposed outside the heat insulation layer 330 while supporting the entire heat insulation wall 300. The second rigid panel 340 is fixed to the shell 210 by a sphere 500, and disposed between the second rigid panel 340 and the shell 210 of the insulating tank 100 and the liquefied gas. It may include a support pad 350 for transmitting a load to the shell (210).

In particular, in the present embodiment, the heat insulating layer 330 has a double barrier structure, and is disposed outside the first rigid panel 320 and the first heat insulating layer 331. The intermediate sealing panel 332 and a second insulating layer 333 disposed between the intermediate sealing panel 332 and the second rigid panel 340 may be formed. In addition, a hole 330a for fastening the fastener 400 is formed in the second insulation layer 333, and a plug 334 is sealed in the hole 330a after fastening the fastener 400. It may be made of a configuration that is inserted.

The first rigid panel 320 is a portion in which the stored liquefied gas is in direct contact. Therefore, the first rigid panel 320 is made of a material such as aluminum alloy, 9% nickel steel, stainless steel, Invar, etc., which withstands the temperature (ultra low or low temperature) of the liquefied gas and the resulting thermal expansion. The intermediate sealing panel 332 prepares for leakage of the first sealing panel 310, which may be caused by sealing between the first insulating layer 331 and the second insulating layer 333. The intermediate sealing panel 332 is made of a metal panel such as aluminum alloy, or a glass fiber attached to the front and rear surfaces of the metal panel such as aluminum alloy, or laminated an aluminum alloy panel or a plurality of metal panels. It may be made in the form.

In addition, the inner sealing panel 310 is preferably made of a known membrane that can absorb heat deformation by corrugation (Corrugation). As the membrane of the corrugation type, the membrane of Technigaz-Membrane, as described above, is preferable.

The structures of the heat insulation wall 300 and the heat insulation layer 330 described with reference to FIGS. 9 and 10 can also be applied to the heat insulation layer of the embodiment described above with reference to FIG. You can change it. Such a structure of the heat insulation wall 300 and the heat insulation layer 330 of the present invention can be usefully applied to the cargo hold for liquefied gas carriers, especially LNG carriers.

As described above, according to the present invention, the anchorage is formed by striking the inner wall of the shell, not only improves the fixing strength, but also welds the anchorage to the inner wall surface of the shell, or Welding deformation, welding failure, etc. which occurred in the conventional fixing structure in which a hole is formed in advance on the inner wall surface and inserted into the hole do not occur. Therefore, the fixing quality can be improved and the reliability of the product can be increased.

In addition, since the fixing device can be easily installed by the portable tableting device, there is no need to provide the wiring for supplying electricity, the generator, or the like as in the conventional welding fixing, and the fixing operation can be performed more quickly and easily.

In particular, by configuring the improved insulation tank as a cargo hold of a liquefied gas carrier such as LNG carriers, it is possible to provide a liquefied gas carrier that is structurally stable, high quality, and can shorten the manufacturing period.

On the other hand, when the tableting apparatus is provided with the tilt winding sensor module and the tilt control module as in the present invention, the inclination state of the fixing unit can be known in advance, so that the fixing unit can be more precisely fixed. In addition, by linking the trigger prevention actuator to the tilt detection device, it is possible to prevent an error that triggers when the anchorage is not set to the correct position.

In the above, the specific preferred embodiment of this invention was shown and demonstrated. However, the present invention is not limited to the above-described embodiment, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention as claimed in the claims, Such modifications are within the scope of the claims of the present invention.

Claims (11)

Insulating tank for receiving fluid in the inner space, An entire shell of the structure; An insulation wall made up of at least one insulation layer and installed inside the shell; A fixing unit fixing the heat insulation wall to an inner wall surface of the shell; And And a fastener coupled to the anchorage to constrain the heat insulation wall to the shell. The anchorage is fixed in such a state that the tip portion thereof is embedded by hitting the inner wall surface of the shell and its circumference is tightened by the shell flesh, The insulating wall is insulated into the shell by being fastened to the fixing unit and fastened to the shell at the protruding rear end of the fixing unit. The method of claim 1, The heat insulation wall, An internal sealing panel into which the contained fluid comes into contact; A first rigid panel supporting the inner sealing panel; A heat insulation layer disposed outside the first rigid panel; A second rigid panel disposed outside the heat insulation layer and fixed to the shell by the anchorage and the fastener while supporting the entire heat insulation wall; And a support pad disposed between the second rigid panel and the shell to transfer the load of the thermal insulation tank to the shell. The method of claim 2, The heat insulation layer, A first insulating layer disposed outside the first rigid panel; An intermediate sealing panel disposed outside the first insulation layer; A second insulating layer disposed between the intermediate sealing panel and the second rigid panel, The second insulating layer is formed with a hole for fastening the fasteners, Insulation tank, characterized in that the hole is made of a configuration in which the plug is sealed after the fastener is fastened. The method of claim 1, Thermal insulation tank, characterized in that the concave-convex portion is formed on the outer peripheral surface of the column portion of the anchorage which is embedded in the shell to increase the adhesion to the shell or partition. As a liquefied gas carrier for receiving and transporting liquefied gas in the cargo hold, A shell including a ship bottom, a ship side, and a plurality of transverse bulkheads forming a periphery of the cargo hold and forming a cargo space therein; And Insulating tank is installed inside the space formed by the shell, The insulation tank, A heat insulation wall having at least one heat insulation layer and fixed to an inner wall surface of the shell; Fixing fixture for fixing the heat insulation wall to the inner wall surface of the shell at various points; And And a fastener coupled to the anchorage to constrain the heat insulation wall to the shell. The anchorage is fixed in such a state that the tip portion thereof is embedded by hitting the inner wall surface of the shell and its circumference is tightened by the shell flesh, The heat insulating wall is liquefied gas carrier ship, which is fitted to the anchorage and is constrained to the shell by engaging the fastener at the protruding rear end of the anchorage. The method of claim 5, The heat insulation wall, An internal sealing panel into which the received liquefied gas comes into contact; A first rigid panel supporting the inner sealing panel; A heat insulation layer disposed outside the first rigid panel; A second rigid panel disposed outside the heat insulation layer and fixed to the shell by the anchorage and the fastener while supporting the entire heat insulation wall; Liquefied gas carrier ship disposed between the second rigid panel and the shell comprising a support pad for transferring the load of the insulating tank to the shell. The method of claim 6, The heat insulation layer, A first insulating layer disposed outside the first rigid panel; An intermediate sealing panel disposed outside the first insulation layer; A second insulating layer disposed between the intermediate sealing panel and the second rigid panel, The second insulating layer is formed with a hole for fastening the fasteners, Liquefied gas carrier ship, characterized in that the hole is formed in the hole is inserted into the plug is sealed after the fastening. The method of claim 5, Liquefied gas carrier ship, characterized in that the concave-convex portion is formed on the outer peripheral surface of the column portion of the anchorage to be embedded in the shell to increase the adhesion to the shell or partition. The method of claim 5, The liquefied gas carrier ship is an LNG carrier ship, and the inner sealing panel is a liquefied gas carrier ship, characterized in that made of a corrugated membrane. A tableting device which loads a fixing device for fixing a heat insulating wall of a heat insulating tank containing fluid in an inner space to an inner wall surface of a shell and drives the shell into the shell by a blow. A tilt detection sensor module mounted on one side of the body of the tableting device and detecting a tilt of the tableting device; And a tilt control module for forming a series of electrical and signal connection relationships with the tilt detection sensor module and receiving and computing a sensing signal output from the tilt detection sensor module to display a result value through a display. A fixing device tableting device for fixing a thermal insulation wall. The method of claim 10, The tableting device is provided with a trigger for triggering on one side of the body, One side of the trigger is provided with a trigger for preventing the actuator to operate in the direction of preventing the trigger of the trigger by the tilt control module when the tilt value from the tilt detection sensor module is out of a predetermined reference value Fixture tableting device for fixing insulation walls.

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