KR20150078111A - Cargo for liquefied gas carrier ship - Google Patents

Abstract

Disclosed is a cargo hold inspection apparatus of a liquefied gas carrier ship to form a closed space around a barrier to inspect a leakage of inspection gas. According to the present invention, the cargo hold inspection apparatus of a liquefied gas carrier ship inspects the sealability of an auxiliary barrier of a liquefied gas carrier ship and includes: a lower inspection space inspection device to form a lower inspection space between a lower insulation panel structure and the auxiliary barrier; and an upper inspection space inspection device to form an upper inspection space on the auxiliary barrier. The cargo hold inspection apparatus of a liquefied gas carrier ship inspects the sealability of the auxiliary barrier by inspecting a leakage of inspection gas through a space between the lower inspection space and the upper inspection space.

Description

{CARGO FOR LIQUEFIED GAS CARRIER SHIP}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for inspecting a cargo hold of a liquefied gas carrier, and more particularly, to a cargo hold inspecting apparatus for a liquefied gas carrier that inspects leakage of a gas by forming a closed space around the barriers.

Liquefied gas refers to a colorless transparent cryogenic liquid that reduces the volume of methane-based natural gas to -162 ° C and reduces its volume by one-sixth.

As such liquefied gas is used as an energy source, an efficient transportation method that can transport a large amount from the production base to the place of purchase of the demand site has been examined in order to utilize this gas as energy. As a part of this effort, A liquefied gas transport vessel capable of being transported by sea was developed.

However, the liquefied gas transportation vessel is required to have a cargo that can store and store the liquefied gas liquefied at an extremely low temperature.

That is, since the liquefied gas has a vapor pressure higher than atmospheric pressure and has a boiling temperature of approximately -162 ° C, in order to safely store and store such a liquefied gas, the cargo window storing the liquefied gas is a material which can withstand extremely low temperatures, It should be made of aluminum steel, stainless steel, 35% nickel steel, etc. It should be designed with a unique insulation panel structure which is resistant to thermal stress and heat shrinkage and prevents heat intrusion.

1 is a sectional view showing a cargo hold of a liquefied gas transportation vessel. The cargo hold of the liquefied natural gas transportation vessel includes a main wall 10 surrounding an accommodation space in which liquefied gas is received, an insulation panel assembly 20 surrounding the main wall 10, and an outer wall 30 surrounding it .

Usually, the outer wall 30 is formed of a hull. In order to improve the heat insulation performance and improve the airtightness, the heat insulating panel assembly 20 usually has a structure in which the two-stage heat insulating panels are laminated. An auxiliary barrier 50 is provided between the lower insulating panel 23 and the upper insulating panel 26 in case the main wall 10 is broken. At this time, auxiliary panels 24 and 28 may be installed above and below the auxiliary barrier to facilitate the installation of the auxiliary barrier 50.

The auxiliary barrier 50 should be installed on the lower insulation panel 23 while maintaining airtightness so that the lower insulation panel 23 can be protected from the liquefied gas when the kitchen wall 10 allows the penetration of the liquefied gas. Conventionally, an auxiliary barrier is provided by a method of bonding the lower insulating panel 23 and the auxiliary barrier 50. However, since the lower insulating panel 23 and the auxiliary barrier 50 have different degrees of thermal deformation at a low temperature for accommodating the liquefied gas, a large thermal stress is generated on the bonding surface. It has been reported that the bonding surface of the lower insulating panel 23 is broken by such thermal deformation, and the airtightness stability of the auxiliary barrier 50 is also weakened.

1, the lower auxiliary panel 24 is laminated on the lower insulating panel 23 and the auxiliary barrier 50 and the lower auxiliary panel 24 are joined together by the coupling unit 40 Lt; / RTI > The auxiliary barrier 50 can be firmly fixed without being bonded to the lower sub-panel 24 by being welded to the coupling unit 40 by welding. Therefore, the risk that the lower insulating panel 23 is broken by the thermal stress or the airtightness of the auxiliary barrier 50 is damaged can be prevented in advance.

The thermal stress that may occur when the auxiliary barrier 50 is adhered by welding is combined with the welding of the auxiliary barrier 50 and the auxiliary barrier 50, There is a problem that the airtightness of the auxiliary barrier 50 can not be maintained when quality defects occur. Accordingly, there is a need for an apparatus and a method for checking whether or not the welding portion of the auxiliary barrier 50 and the coupling unit 40 satisfies the reference quality.

Korean Patent Registration No. 10-0748819 discloses a heat insulating plate fixing device for a LNG carrier holding case.

Korean Registered Patent No. 10-0748819 (published on Aug. 13, 2007)

An embodiment of the present invention is to provide an apparatus for inspecting the luggage of a liquefied gas transportation vessel capable of inspecting the airtightness of a coupling portion for coupling the auxiliary barrier and the coupling unit.

According to one aspect of the present invention, there is provided an apparatus for inspecting the luggage of a liquefied gas transportation vessel for inspecting the sealing performance of the auxiliary barrier of a liquefied gas holding window. The apparatus includes a lower inspecting apparatus for forming a lower inspecting space between a lower insulating panel structure and an auxiliary wall And an upper inspection space inspection device for forming an upper inspection space on the auxiliary barrier, wherein the inspection is performed between the lower inspection space and the upper inspection space to check whether leak of the inspection gas occurs, A cargo hold inspection apparatus of a liquefied gas transportation vessel for inspecting the cargo can be provided.

The lower insulation panel structure and the auxiliary barrier may be coupled by a coupling unit and an inspection apparatus for a liquefied gas transportation vessel may be provided for inspecting sealing properties of a coupling portion where the coupling unit and the auxiliary barrier are engaged.

The lower inspection space inspection apparatus may include an insertion member inserted between the lower thermal insulation panel structure and the auxiliary barrier and provided with a flow path through which the inspection gas can flow, the inspection apparatus for a liquefied gas transportation vessel may be provided.

Wherein the inserting member is shaped like a wedge for easy insertion at corners of the lower insulation panel structure and the auxiliary barrier, and the lower inspection space inspection apparatus includes a lower inspection space between the lower insulation panel structure and the auxiliary barrier, It is possible to provide a cargo hold inspection apparatus for a liquefied gas transportation vessel further comprising a communicating inspection pipe.

The lower inspection space inspection apparatus may include a lower sealing member interposed between the insertion member and the auxiliary barrier to prevent leakage of the inspection gas.

The upper inspection space inspection apparatus includes a case installed on the auxiliary wall to form the upper inspection space, and the upper inspection space includes a first upper inspection space including an engaging portion, And a second upper inspection space excluding the first upper inspection space in a space inside the case may be provided.

The upper inspection space inspection apparatus may include a chamber member forming the first upper inspection space and communicating with the outside through a first inspection hole provided in the case.

The upper inspection space inspection apparatus may include an upper sealing member interposed between the case and the auxiliary barrier to prevent leakage of the inspection gas.

The upper inspection space inspection apparatus may include a chamber sealing member interposed between the chamber member and the auxiliary barrier to prevent leakage of the inspection gas.

The case may further include a second inspection hole communicating with the second upper inspection space to the outside.

The lower inspection space inspection apparatus further comprises a fixing unit fixed to the coupling unit protruding through the auxiliary barrier, a rod connected to the fixing unit and protruding to an edge of the auxiliary barrier, And a fixing member including a latching portion capable of fixing the edge of the barrier wall while keeping the edge of the barrier wall away from the lower adiabatic panel structure.

The locking part is guided by a guide rod extending from the rod and is movable in one direction and has a bent part at an end thereof to hang the corner of the auxiliary wall, It is possible to provide an apparatus for inspecting a cargo hold of a liquefied gas transportation vessel which receives an elastic force in a direction in which the liquefied gas is transported.

The apparatus for inspecting the luggage of a liquefied gas transportation vessel according to an embodiment of the present invention is a method for inspecting the airtightness of an auxiliary barrier coupled by welding with a coupling unit mechanically coupled to a lower adiabatic panel structure, It is possible to inspect the gas tightness of the auxiliary barrier by inspecting the gas flow between the two inspection spaces by setting the lower inspection space between the upper and lower inspection spaces and the upper inspection space above the auxiliary barrier.

1 is a sectional view showing a cargo hold of a liquefied gas transportation vessel.
Figure 2 is an enlarged view of the coupling unit of Figure 1;
3 is an exploded perspective view of an insulated panel assembly to be inspected in a testing apparatus according to an embodiment of the present invention.
4 is a partially cutaway perspective view of an insulated panel assembly to be inspected of a testing apparatus according to an embodiment of the present invention.
5 is a perspective view of a testing apparatus according to an embodiment of the present invention.
6 is an exploded perspective view showing the lower inspection space inspection apparatus of FIG.
7 is a perspective view showing an example of using a fixing member.
8 is a side view of the fixing member.
9 is a perspective view illustrating a lower inspection space inspection apparatus of an inspection apparatus according to an embodiment of the present invention coupled to an insulation panel assembly.
10 is an exploded perspective view showing the upper inspection space inspection apparatus of FIG.
11 is a cross-sectional view taken along line AA in Fig.

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

The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 is a sectional view showing a cargo hold of a liquefied gas transportation vessel.

The cargo hold of the liquefied gas receiving vessel is provided with a main wall 10 surrounding the receiving space in which the liquefied gas is received, an insulating panel assembly 20 surrounding the main wall 10, and an outer wall 30).

The outer wall 30 supports the load of the storage fluid, and an inner hull can be used. The heat insulating panel assembly 20 is generally made of a double structure including an upper heat insulating panel structure 22 and a lower heat insulating panel structure 21 for the purpose of improving heat insulation performance and ease of repairing. An auxiliary barrier 50 may be provided between the lower insulation panel structure 21 and the lower insulation panel structure 21. The upper insulating panel structure 22 includes an upper insulating panel 26 and the lower insulating panel structure 21 includes a lower insulating panel 23. [ The heat insulating panels 23 and 26 are generally made of a material having excellent heat insulation performance and light weight such as polyurethane foam (PUF) or reinforced polyurethane foam (RPUF, Reinforced PUF) Can be protected.

The airtightness (or watertightness) is a top priority for the kitchen wall 10 and the auxiliary barrier 50 and metallic materials such as an invar alloy (INVAR), stainless steel (SUS), or aluminum alloy can be used, A rigid triplex and a supple triplex may be used.

The kitchen wall 10 is for sealing the storage space in which the storage fluid is received, and airtightness is required. Since the liquefied gas can be maintained at a cryogenic temperature below the boiling point, it is usually stored in a liquid state. However, depending on the change of temperature or pressure, vaporization of some liquefied gas may occur, and the pressure inside the cargo hold increases greatly. When the kitchen wall 10 penetrates due to such an increase in pressure or the like, the liquid or gaseous liquefied gas can be introduced into the heat insulating panel assembly 20. [ As the temperature of the introduced liquefied gas increases, the volume of the liquefied gas expands and damages the heat insulating panel assembly 20. The damage to the cargo holds a significant amount of time and money in repairs, so the airtightness of the barrier is considered very important.

The auxiliary barrier 50 is provided between the lower and upper insulation panel structures 21 and 22 and seals the lower insulation panel structure 22. The auxiliary barrier 50 prevents the liquefied gas from entering the lower insulating panel 21 when the kitchen wall 10 is infiltrated, thereby protecting the lower insulating panel 21. Therefore, even if the kitchen wall 10 allows the inflow of the liquefied gas, the lower insulation panel structure 22 can be protected from the liquefied gas, and only the upper insulation panel 22 can be repaired, Can be greatly reduced.

The lower heat-insulating panel structural body 21 is adhered to the outer wall by a mastic 31 or the like, so that the impact can be alleviated simultaneously with the bonding. In addition, the method of joining by the mastic 31 may allow the heat insulating panel assembly 20 to be deformed, thereby preventing the stress from concentrating on the heat insulating panel assembly 20. Further, the lower insulating panel structure 21 can be joined by various fixing members including the outer wall 30, the stud bolts 32, and the like.

The auxiliary panels 24, 25, 27 and 28 may be provided on the upper and lower sides of the heat insulating panels 23 and 26, respectively. The auxiliary panel is used to reinforce the heat insulating panel or to secure the bonding of the heat insulating panel assembly 20, and it is possible to use a lightweight material having a higher structural strength than the heat insulating panels 23 and 26. For example, plywood can be used and attached to the heat insulating panels 23 and 26 using an adhesive such as an epoxy glue or the like. The auxiliary panel 25 provided at the lower part of the lower heat insulating panel 23 can secure the connection between the lower heat insulating panel 23 and the outer wall 30. The lower auxiliary panel 24 provided at the upper portion of the lower insulating panel 23 and the upper auxiliary panel 28 provided at the lower portion of the upper insulating panel 26 are connected to the lower insulating panel 23 and the auxiliary barrier 50, And the upper insulating panel 26 are joined to each other by a coupling unit 40.

Hereinafter, a method of coupling the auxiliary barrier 50 to the lower thermal insulation panel structure 21 using the coupling unit 40 will be described.

FIG. 2 is an enlarged view showing a coupling unit 40 of FIG. 1 for illustrating a coupling relationship of a lower insulating panel structure to be inspected by the inspection apparatus according to an embodiment of the present invention. Although the lower sub-panel 24 is shown as being laminated on the lower heat-insulating panel 23, the lower sub-panel 24 is omitted and the coupling unit 40 is directly coupled to the lower heat- .

The auxiliary barrier 50 may be coupled to the lower sub-panel 24 laminated on the lower insulating panel 23 via a coupling unit 40. [ Since the auxiliary barrier 50 is not bonded to the lower insulating panel structure 21 by adhesion, thermal stress due to the difference in thermal expansion coefficient does not occur on the contact surface with the lower auxiliary panel 24. However, it is necessary to be restrained by mechanical coupling with the lower sub-panel 24 in order to prevent the auxiliary barrier 50 from being separated.

The coupling unit 40 is slidably coupled with the auxiliary barrier 50 when the auxiliary barrier 50 is thermally expanded while restricting the auxiliary barrier 50 and the lower auxiliary panel 24 in the vertical direction.

The coupling unit 40 includes a fixing piece 42 fixed to the lower sub panel 24 and a moving block 41 restrained in the vertical direction by the fixing piece 42 and welded to the auxiliary barrier 50 . The lower sub-panel 24 is adhered to the lower insulating panel 23 and has a first depression 24a capable of accommodating the moving block 41 and a second depression 24a capable of accommodating the fixing piece 42. [ A depression 24b is provided. The first depressed portion 24a and the second depressed portion 24b are formed on the lower sub-panel 24 in the above case. However, when the lower adiabatic panel structure 21 does not include the lower sub-panel 24 The depression (not shown) may be formed directly on the lower heat insulating panel 23. [

The moving block 41 accommodated in the first depression 24a is slidable in the width direction of the first depression 24a and the fixing piece 42 and the auxiliary barrier 50. The movable block 41 welded to the auxiliary barrier 50 is capable of sliding in the direction of contraction or expansion of the auxiliary barrier 50 when the auxiliary barrier 50 undergoes thermal contraction or thermal expansion. At this time, the contraction range of the auxiliary barrier 50 is calculated to determine the width of the first depression 24a and the size of the space in which the moving block 41 is accommodated in the center of the fixing piece 42. [

The first depressed portion 24a and the moving block 41 may have a circular cross sectional shape in cross section in the width direction of the auxiliary barrier 50. In the case of a circular shape, it is possible to slide evenly along the shrinkage direction and it is easy to manufacture.

The fixing piece 42 is fixedly coupled to the lower sub-panel 24 and is provided to cover a part of the outer circumferential surface of the moving block 41, thereby restricting the vertical movement of the moving block 41. [ At this time, the fixation of the fixing piece 42 can be performed by bolts or rivets or by adhesion.

As described above, the method of binding the lower insulating panel structure 21 and the auxiliary barrier 50 has been described. Next, a description will be given of a method of binding the lower and upper heat-insulating panel structures 21 and 22 to each other.

The moving block 41 may be provided with a stud bolt 43 passing through the auxiliary barrier 50. The stud bolt 43 may be coupled to the coupling groove in which the threaded bar provided in the moving block 41 is formed or may be integrally formed with the moving block 41. [

The upper insulating panel structure 26 may include an upper sub-panel 28 with the auxiliary barrier 50 for engagement with the coupling unit 40. The upper surface of the upper sub-panel 28 may be provided with a groove on which the washer 44 can be seated. The stud bolt 43 protrudes through a groove provided at the center of the washer 44 and the nut 45 is coupled to the stud bolt 43 so that the coupling between the coupling unit 40 and the upper sub- Is completed. Thereafter, the upper insulating panel 26 is adhered and fixed on the upper sub-panel 28.

FIG. 3 is an exploded perspective view of an insulating panel assembly to be inspected by a testing apparatus according to an embodiment of the present invention, and FIG. 4 is a partially cutaway perspective view.

The inspection apparatus 100 according to the embodiment of the present invention inspects the insulation panel assembly in a state before the upper insulation panel structure 22 is coupled with the lower insulation panel structure 21 and the auxiliary barrier 50. The inspection apparatus 100 checks the quality of the welded portion W of the auxiliary barrier 50 and the coupling unit 40 to check whether the auxiliary barrier 50 is tightly coupled. At this time, the combination of the auxiliary barrier 50 and the coupling unit 40 should satisfy the sealing performance. Usually, welding may be used, but includes the case of bonding using an adhesive or bonding using a separate joining member.

5 is a perspective view of a testing apparatus according to an embodiment of the present invention. The inspection apparatus 100 includes a lower inspection space inspection apparatus 101 forming a lower inspection space L provided between the auxiliary barrier 50 and the lower auxiliary panel 24 and a lower inspection space inspection apparatus 101 provided on the auxiliary barrier 50 And an upper inspection space inspection apparatus 102 for forming upper inspection spaces T1 and T2. The lower inspection space L and the upper inspection spaces T 1 and T 2 are sealed to each other with the welding portion W of the auxiliary barrier 50 interposed therebetween. Therefore, when the test gas injected into the lower inspection space L is detected in the upper inspection spaces T1 and T2, or when different pressures are applied to the lower inspection space L and the upper inspection spaces T1 and T2, It is possible to judge that a leak of the test gas is occurring in the welded portion W, for example. When leakage occurs in the welded portion W, there is a defect in the sealing performance of the auxiliary barrier 50, which requires repairing.

Hereinafter, the structure of the lower inspection space inspection apparatus 101 for forming the lower inspection space L provided below the auxiliary barrier 50 in the inspection apparatus 100 will be described. 6 is an exploded perspective view showing the lower inspection space inspection apparatus 101 of FIG.

The lower inspection space inspection apparatus 101 includes an insertion member 110 inserted between the auxiliary barrier 50 and the lower auxiliary panel 24 to form a lower inspection space L, 110 for sealing the lower sealing member 120.

6 has one coupling unit 40 at the center for coupling the lower insulating panel 23 and the auxiliary barrier 50, and has six rectangular coupling units 40 surrounding the coupling unit 40, (40). Since the coupling unit 40 restrains the auxiliary barrier 50 and the lower sub-panel 24 from each other, the insertion member 110 (not shown) is inserted into the rectangular region R set by the six coupling units 40 surrounding the coupling unit 40 ) Is difficult to be inserted. Therefore, the insertion member 110 is easily inserted into the corner C, which is outside the rectangular region R. [

The insertion member 110 may be provided in a wedge shape to facilitate insertion. The auxiliary barrier 50 is formed in a sheet type and is generally made of a metallic material such as stainless steel (SUS), so that it is brought into close contact with the lower sub-panel 24. Therefore, in order to prevent the secondary barrier 50 from being deformed while separating the auxiliary barrier 50 from the lower auxiliary panel 24, a wedge-shaped insertion member 110 having a triangular cross section may be used.

The insertion member 110 may be provided in four pieces so as to be respectively inserted into the four corners C of the auxiliary barrier 50. Four pieces of the insertion member 110 are provided in the auxiliary barrier 50, The insertion members 110 are engaged with each other such that a space is not formed between the adjacent insertion members 110 after being inserted between the insertion members. For example, the insertion member 110 may be trapezoidal in the planar direction. Although the outer end of the insertion member 110 and the edge of the auxiliary barrier 50 are shown to be aligned with each other in the figure, the insertion member 110 may protrude out of the auxiliary barrier 50, It is also acceptable to have a shape.

The lower inspection space inspection apparatus 101 may be provided with a flow path through which the inspection gas flows in and out from the lower inspection space L. For example, the inspection pipe 111 passing through the insertion member 110, May be provided. One end of the inspection pipe 111 reaches the lower inspection space L and the other end can protrude to the outside of the insertion member 110 to facilitate injection of the inspection gas.

The lower sealing member 120 is a member for sealing the inspection gas to the outside of the inspection pipe 111 so as to prevent leakage of the inspection gas. The lower sealing member 120 may be provided between the auxiliary barrier 50 and the insertion member 110, between the insertion member 110 and the lower sub-panel 24, and / or between the adjacent insertion members 110 . The lower sealing member 120 may be made of a rubber material capable of being elastically deformed, so that the lower sealing member 120 need not be provided as a piece like the insertion member 110.

The lower inspection space inspection apparatus 101 can use the fixing member 130 to facilitate insertion of the insertion member 110 and the lower sealing member 120 between the auxiliary barrier 50 and the lower auxiliary panel 24. [ Fig. 7 is a perspective view showing an example of using the fixing member 130, and Fig. 8 is a side view of the fixing member 130. Fig. 9 is a perspective view showing a state where a lower inspection space inspection apparatus 101 of an inspection apparatus 100 according to an embodiment of the present invention is coupled to an insulation panel assembly.

In order to insert the insertion member 110 and the lower sealing member 120, it is necessary to fix the corner portion C of the auxiliary barrier 50 away from the lower sub-panel 24. At this time, by using the fixing member 130, the work process can be simplified. The fixing member 130 may be fixedly coupled to the stud bolt 43 of the coupling unit 40 and may be fixed to the lower auxiliary panel 24 while the corner C of the auxiliary barrier 50 is separated from the lower auxiliary panel 24. [ can do.

The fixing member 130 includes a fixing portion 132 fixed on the insulating panel assembly to be inspected, a rod 131 connected to the fixing portion 132 and extending to the edge of the auxiliary barrier 50, 131 for fixing the auxiliary barrier 50 to the lower sub-panel 24 in a spaced apart relationship.

The fixing part 132 may be coupled with the stud bolt 43 protruding upward through the auxiliary barrier 50 and may include a coupling hole 132a in which a thread is formed on the inner peripheral surface, Lt; / RTI > Or simply that the threaded bolt 43 is fitted without being threaded. That is, the fixing portion 132 need not be constrained to the stud bolt 43 in the vertical direction, and it is sufficient that the movement in the plane direction of the auxiliary barrier 50 is restricted by the stud bolt 43. [

The rod 131 may extend from the fixing portion 132 to a position where the corner of the auxiliary barrier 50 is located and the end portion is located a predetermined distance away from the auxiliary barrier 50 in the height direction. The lower surface of the rod 131 may be inclined so as to accommodate a state in which the corner C of the auxiliary barrier 50 is received. A guide rod 134 is extended at the end of the rod 131 and the engagement portion 133 is coupled to the guide rod 134 so as to be movable in one direction along the guide rod 134. A bent portion 133a bent inward (in the direction of the fixing portion 132) is provided at the end of the locking portion 133. The edge portion C of the auxiliary barrier 50 is bent in the bent portion 133a, As shown in Fig.

An elastic member supporting portion 135 is provided at an end of the guide rod 134 and an elastic member 136 is interposed between the engaging portion 133 and the elastic member 136. The elastic member 136 provides an elastic force to the engaging part 133 in the inward direction (direction of the fixing part 132) to prevent the auxiliary barrier 50 from being detached from the bending part 133a. The elastic member supporter 135 may be provided in a flange shape.

Next, a method of installing the lower inspection space inspection apparatus 101 using the fixing member 130 will be described.

A lower inspection space L should be formed between the lower sub-panel 24 and the auxiliary barrier 50 in order to insert the insertion member 110 and the lower sealing member 120. The fixing member 130 is for fixing the corner portion C of the auxiliary barrier 50 away from the lower auxiliary panel 24 and is connected to the stud bolt 43 of the coupling unit 40, 131 are oriented toward the corners of the auxiliary barrier 50. The operator lifts the auxiliary wall 50 in a state where the locking part 133 is pulled in the direction of the elastic member supporting part 135 so that the corner of the auxiliary wall 50 can be hooked on the bent part 133a, (133) is released to fix the auxiliary barrier (50) to the locking part (133).

The insertion member 110 is inserted into the space L formed between the auxiliary barrier 50 and the lower sub- The above method is repeated to insert the insertion member 110 into the four corners of the insulated panel assembly to be inspected. After inserting the insertion member 110, the lower sealing member 120 may be inserted between the insertion member 110 and the auxiliary barrier 50. The lower sealing member 120 seals the lower inspection space L and the outside so that the inspection gas can flow only through the inspection pipe 111. The lower sealing member 120 may be made of an elastic rubber material and may be provided on the coupling surface of the insertion member 110 between the insertion member 110 and the lower sub panel 24 and / Member 120 may be provided.

After the insertion to the lower sealing member 120 is completed, the fixing member 130 is removed. The method of removing the fixing member 130 is the reverse of the method of installation. That is, after the engaging portion 133 is removed from the auxiliary barrier 50, the fixing portion 132 is disengaged from the stud bolt 43.

FIG. 9 shows a state where the lower inspection space inspection apparatus 101 is coupled to the insulation panel assembly to be inspected through the above process.

Fig. 10 is an exploded perspective view showing the upper cargo hold inspection apparatus 102 of Fig. 5, and Fig. 11 is a sectional view taken along the line A-A of Fig.

The upper holding space inspection apparatus 102 includes a case 150 for partitioning the upper inspection spaces T1 and T2 and an upper inspection space T1 and T2 interposed between the case 150 and the auxiliary barrier 50, And may include an upper sealing member 140 that seals. The upper inspection spaces T1 and T2 isolated by the case 150 are virtual spaces that are sealed by the kitchen wall 10 and the auxiliary barrier 50 shown in FIG.

The case 150 defines a hexagonal upper inspection space T1 and T2 by a side wall 152 and an upper wall 153. A flange portion 151 bent outward is provided at a lower end of the side wall 152, Thereby increasing the contact area with the barrier 50 or the upper sealing member 140. Therefore, the sealing property can be improved so that the test gas in the upper inspection space is not leaked to the outside. The case 150 may be made of a transparent material. Therefore, it is possible to visually confirm the presence or absence of abnormality in the upper cargo hold inspection apparatus 102. The upper sealing member 140 may be made of a rubber material capable of elastic deformation.

The upper inspection space includes a first upper inspection space T1 including a coupling portion W to which the coupling unit 40 and the auxiliary barrier 50 are coupled and a second upper inspection space T1 T1), which is a region excluding the second upper inspection space T2. The upper cargo hold inspection apparatus 102 may further include a chamber member 160 for partitioning the first upper inspection space T1.

The chamber member 160 includes a chamber wall 161 that compartmentalizes the second upper inspection space T2 and the lower portion of the chamber wall 161 engages the auxiliary barrier 50 to receive the weld W, The upper portion is connected to the outside through the first inspection hole 154 of the upper wall 153 of the case 150. The chamber member 160 includes a first inspection pipe 163 protruding outwardly through the first inspection hole 154. The first inspection pipe 163 protrudes out of the case 150 to facilitate the inflow and / or detection of the inspection gas. Further, a chamber sealing member 162 is interposed between the chamber member 160 and the auxiliary barrier 50 to prevent leakage of the inspected gas.

The case 150 may include a second inspection hole 155 for communicating the second upper inspection space T2 with the outside and a second inspection pipe 164 protruding to the outside in the second inspection hole 155. [ Can be connected to facilitate the inflow and / or detection of the inspected gas.

Next, a method of inspecting the airtightness of the auxiliary barrier 50 using the cargo hold inspection apparatus 100 will be described. The inspection space serving as the inspection area of the cargo hold inspection apparatus 100 is divided into a first upper inspection space T1, a second upper inspection space T2 and a lower inspection space L, . The first upper inspection space T1 is partitioned by the chamber member 160 and connected to the outside through the first inspection hole 154 and the first inspection pipe 163 to allow the inspected gas to flow in and out. The second upper inspection space T2 is divided by the case 150 and the chamber member 160 and is connected to the outside through the second inspection hole 155 and the second inspection pipe 164, This can happen. Further, the lower inspection space L is divided by the insertion member 110, and is connected to the outside by the inspection pipe 111, so that the inspected gas can flow in and out.

The lower inspection space L and the first upper inspection space T1 can be seen as a steady state in which they are airtightly separated from each other by the auxiliary barrier 50 and the coupling unit 40. However, when there is a defect in the welded portion W, which is the coupling portion of the auxiliary barrier 50 and the coupling unit 40, the inspected gas may flow in and out through the welded portion W. [ It is necessary to check whether leakage of the test gas occurs between the lower inspection space L and the first upper inspection space T1 or if pressure equilibrium occurs between the lower inspection space L and the first upper inspection space T1 It is possible to check whether or not the welded portion W is hermetically sealed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, You will understand. Accordingly, the true scope of the invention should be determined only by the appended claims.

10: Kitchen wall, 20: Insulation panel assembly,
21: lower insulation panel structure, 22: upper insulation panel structure,
23: lower insulation panel, 24: lower sub-panel,
26: Upper insulation panel, 28: Upper auxiliary panel,
30: outer wall, 31: mastic,
32: stud bolt, 40: coupling unit,
41: moving block, 42: fixed piece,
43: stud bolt, 44: washer,
45: nut, 50: auxiliary barrier,
100: cargo hold inspection device, 101: lower inspection space inspection device,
102: upper inspection space inspection device, 110: insertion member,
111: Inspection pipe, 120: Lower sealing member,
130: fixing member, 131: rod,
132: fixing portion, 133: latch portion,
133a: bending portion, 134: guide rod,
135: elastic member supporting portion, 136: elastic member,
140: upper sealing member, 150: case,
151: flange portion, 152: side wall,
153: upper wall, 154: first inspection hole,
155: second inspection hole, 160: chamber member,
161: chamber wall, 162: chamber sealing member,
163: First inspector, 164: Second inspector

Claims (12)

The present invention relates to a luggage inspection apparatus for a liquefied gas transportation vessel for inspecting the sealing performance of an auxiliary barrier of a liquefied gas holding window,
A lower inspection space inspection device for forming a lower inspection space between the lower thermal insulation panel structure and the auxiliary barrier,
And an upper inspection space inspection device for forming an upper inspection space on the auxiliary barrier,
And inspecting leakage of the test gas between the lower inspection space and the upper inspection space to inspect the sealing performance of the auxiliary barrier. The method according to claim 1,
Wherein the lower insulating panel structure and the auxiliary barrier are coupled by a coupling unit,
And a sealing property of a coupling portion where the coupling unit and the auxiliary barrier are engaged with each other. 3. The method according to claim 1 or 2,
Wherein the lower inspection space inspection device comprises an insertion member inserted between the lower thermal insulation panel structure and the auxiliary barrier and provided with a flow path through which the inspection gas can flow. The method of claim 3,
Wherein the insertion member is wedge-shaped for easy insertion at corners of the lower heat-insulating panel structure and the auxiliary barrier,
Wherein the lower inspection space inspection apparatus further comprises a inspection pipe communicating with the lower inspection space between the lower insulation panel structure and the auxiliary barrier. The method of claim 3,
Wherein the lower inspection space inspection device includes a lower sealing member interposed between the insertion member and the auxiliary barrier to prevent leakage of the inspection gas. 3. The method of claim 2,
Wherein the upper inspection space inspection apparatus includes a case installed on the auxiliary wall to form the upper inspection space,
Wherein the upper inspection space includes a first upper inspection space including a coupling portion in which the coupling unit and the auxiliary barrier are engaged and a second upper inspection space excluding the first upper inspection space in a space inside the case, Cargo hold inspection equipment for transport vessels. The method according to claim 6,
Wherein the upper inspection space inspection apparatus comprises a chamber member forming the first upper inspection space and communicating with the outside through a first inspection hole provided in the case. The method according to claim 6,
Wherein the upper inspection space inspection device includes an upper sealing member interposed between the case and the auxiliary barrier to prevent leakage of the inspection gas. 9. The method of claim 8,
Wherein the upper inspection space inspection apparatus includes a chamber sealing member interposed between the chamber member and the auxiliary barrier to prevent leakage of the inspection gas. 8. The method of claim 7,
And the case includes a second inspection hole communicating with the second upper inspection space to the outside. The method of claim 3,
The lower inspection space inspection apparatus includes:
A fixing part fixed to the coupling unit protruding through the auxiliary barrier, a rod connected to the fixing part and projecting to an edge of the auxiliary barrier, and a rod connected to the rod, Further comprising a fixing member including an engaging portion that can be fixed while being spaced apart from the structure. 12. The method of claim 11,
The locking part is guided by a guide rod extending from the rod and is movable in one direction and has a bent part at an end thereof to hang the corner of the auxiliary wall, An apparatus for inspecting a cargo hold of a liquefied gas transportation vessel which receives an elastic force in a certain direction.

Images