Mounting method for insulating layer of top surface floating-stopping support of B-type liquid cargo tank of ship

Abstract

According to the method for installing the insulating layer of the top surface anti-floating support of the B-type liquid cargo tank of the ship, firstly, the top surface anti-floating support is installed on the side, opposite to the outer wall of a first ship body, of a first bulkhead, and a plurality of bolts are arranged on the side, opposite to the outer wall of the first ship body, of the first bulkhead on the top surface of the B-type liquid cargo tank; a liquid cargo tank sole timber is arranged between each bolt and the first bulkhead, and a supporting cushion block is arranged at the end, opposite to the outer wall of the first ship body, of each liquid cargo tank sole timber. An insulation board is arranged on the outer side of the bolt, and a leakage channel is formed between the insulation board and the first bulkhead. And a groove for embedding the rib plate is cut at the contact part of the heat insulation plate and the rib plate of the floating stopping support. A die cavity is formed in the top face floating stopping support, and a pouring opening is formed in the die cavity. A foaming material is poured into the mold cavity through the pouring opening, the mold cavity is removed after the foaming material is cured, and a protective layer is arranged on the outer surface of the foaming material. Therefore, the insulation requirement between the anti-floating support and the B-type liquid cargo tank can be met, and the requirement for a leakage channel can also be met.

Description

Technical Field

[0001] The present invention relates to the technical field of ship design, and in particular, to an installation method for an insulating layer of a top floating support of a B-type liquid cargo tank of a ship. Background Art

[0002] A liquefied gas carrier is a special ship used for transporting cryogenic liquid cargoes such as liquefied petroleum gas and liquefied natural gas. These liquid cargoes are loaded in the liquid cargo tanks of the liquefied gas carrier. Since the temperature of the liquid cargo is low, insulation needs to be installed on the outer surface of the liquid cargo tank. The main purpose of the liquid cargo tank insulation is to prevent external heat from entering the interior of the liquid cargo tank, thereby reducing the evaporation amount of the liquid cargo tank.

[0003] According to the type of liquid cargo loaded, the working place, and other aspects, the liquid cargo tanks on liquefied gas carriers are divided into three types: A-type, B-type, and C-type. Among them, the A-type independent liquid cargo tank is mainly a flat structure with a complete secondary shield; the B-type independent liquid cargo tank is a flat structure or a spherical tank type with a partial secondary shield; the C-type independent liquid cargo tank is a spherical tank type without a secondary shield. According to the different structural characteristics and performance requirements of the above three types of liquid cargo tanks, the installation methods of their insulation are also different. Among them, the A-type independent liquid cargo tank is connected to the hull through a support system. The temperature inside the A-type and C-type liquid cargo tanks is about -50°C. The structure of the B-type liquid cargo tank is partially similar to that of the A-type liquid cargo tank, but the temperature inside the B-type liquid cargo tank is lower, about -100°C. Moreover, the B-type liquid cargo tank has a small amount of liquid leakage requirement and must be provided with a leakage channel. Therefore, an effective insulation system must be used to achieve the purpose of heat preservation while ensuring that a small amount of leaked liquid can reach the corresponding storage area through the leakage channel.

[0004] The B-type liquid cargo tank has a complex structure and is connected to many support structures, such as the top floating support. The top floating supports are uniformly arranged at the position below the inclined surface at the top of the liquid tank in the midship position. To prevent external heat from entering the interior of the liquid cargo tank and thus reduce the evaporation amount of the liquid cargo tank, not only the insulation of the main part of the liquid cargo tank needs to be solved, but also the insulation between components such as the top floating support and the liquid cargo tank and the requirements of the B-type liquid tank for the leakage channel need to be paid attention to. The structures of these components are often of complex types and are intertwined. Not only are they inconvenient to install, but also the technical requirements are high. Therefore, how to better install insulation on the top floating support is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art, the present application provides an installation method for an insulating layer of a top floating support of a B-type liquid cargo tank of a ship, which can enable the top floating support and the liquid cargo tank to meet both the insulation requirements and the requirements of the B-type liquid tank for the leakage channel.

[0006] To achieve the above and other related objectives, the present invention provides a method for installing an insulating layer of a top floating support for a B-type liquid cargo tank of a ship. The top surface of the B-type liquid cargo tank includes a first bulkhead, the hull of the ship includes a first outer hull wall parallel to the first bulkhead, and the method for installing the insulating layer of the top floating support for the B-type liquid cargo tank of the ship includes the following steps:

[0007] Install the top floating support on the side of the first bulkhead opposite to the first outer hull wall. The top surface of the top floating support is provided with a mounting panel parallel to the first bulkhead. The mounting panel is connected to the first bulkhead through a plurality of rib plates. A wooden block is provided on the mounting panel, and a wooden block groove is provided between the mounting panel and the wooden block;

[0008] Set a plurality of bolts on the side of the first bulkhead of the B-type liquid cargo tank opposite to the first outer hull wall of the hull. A liquid cargo tank wooden block is provided between each bolt and the first bulkhead. A support pad is provided at one end of the liquid cargo tank wooden block opposite to the first outer hull wall;

[0009] Set a heat preservation board outside the bolts. A leakage channel is formed between the heat preservation board and the first bulkhead. The width of the leakage channel is equal to the sum of the height of the liquid cargo tank wooden block and the height of the support pad;

[0010] Cut a groove corresponding to the shape of the rib plate at the part where the heat preservation board contacts the rib plate of the top floating support, so that the rib plate is embedded in the groove of the heat preservation board;

[0011] Set a mold cavity on the top floating support. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A wooden block through hole matching the wooden block is provided on the baffle top plate, so that the baffle top plate is sleeved on the wooden block and located between the first outer hull wall and the wooden block groove. A pouring port is provided on the mold cavity;

[0012] Pour foaming material into the mold cavity through the pouring port, so that the foaming material wraps the mounting panel, the wooden block groove and the rib plate located in the mold cavity;

[0013] Remove the baffle top plate and the four baffle side plates after the foaming material is cured;

[0014] Set a protective layer on the outer surface of the foaming material.

[0015] Optionally, before setting a plurality of bolts on the side of the first bulkhead of the B-type liquid cargo tank opposite to the first outer hull wall of the hull, it includes:

[0016] Spray an anti-corrosion layer on the surface of the first bulkhead.

[0017] Optionally, setting a heat preservation board outside the bolts includes:

[0018] A filling through-hole is provided on one side adjacent to the outer side of the thermal insulation board and the bolt, and the filling through-hole is filled with an elastic material.

[0019] Optionally, the width of the leakage channel is between 15 mm and 25 mm.

[0020] Optionally, a groove corresponding to the shape of the rib plate is cut at the part where the thermal insulation board contacts the top surface anti-floating support, so that the rib plate is embedded in the groove of the thermal insulation board, including:

[0021] A sealant is filled between the rib plate and the thermal insulation board.

[0022] Optionally, a mold cavity is provided on the top surface anti-floating support. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A pad wood through-hole matching the pad wood is provided on the baffle top plate, so that the baffle top plate is sleeved on the pad wood and is located between the outer wall of the first hull and the pad wood groove. A pouring port is provided on the mold cavity, including:

[0023] A demolding film is laid on the inner sides of the baffle top plate and the four side plates.

[0024] Optionally, a mold cavity is provided on the top surface anti-floating support. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A pad wood through-hole matching the pad wood is provided on the baffle top plate, so that the baffle top plate is sleeved on the pad wood and is located between the outer wall of the first hull and the pad wood groove. A pouring port is provided on the mold cavity, including:

[0025] A support is provided between the outer wall of the first hull and the baffle side plate.

[0026] Optionally, the spacing distance between the baffle top plate and the pad wood groove is greater than or equal to 20 mm.

[0027] Optionally, after the foaming material is cured, the baffle top plate and the four baffle side plates are removed, and further including:

[0028] A sealant is filled between the thermal insulation board and the cured foaming material.

[0029] Optionally, a protective layer is provided on the outer surface of the foaming material, including:

[0030] The protective layer is an aluminum foil protective layer, and the thickness of the aluminum foil protective layer is between 0.2 mm and 0.4 mm.

[0031] Optionally, the distance between any edge of the outer surface of the foaming material and the rib plate of the top surface anti-floating support is greater than or equal to 50 mm.

[0032] As described above, the installation method of the insulation layer of the B-type liquid cargo tank top surface anti-floating support of the ship provided by the present invention at least has the following beneficial technical effects:

[0033] Installation method of insulating layer of top floating support for B-type liquid cargo tank of ship of the present invention. The top surface of the B-type liquid cargo tank includes a first bulkhead. The hull of the ship includes a first outer hull wall parallel to the first bulkhead. The installation method of the insulating layer of the top floating support for the B-type liquid cargo tank of the ship first installs the top floating support on the side of the first bulkhead opposite to the first outer hull wall. The top surface of the top floating support is provided with an installation panel parallel to the first bulkhead. The installation panel is connected to the first bulkhead through a plurality of rib plates. A wooden block is provided on the installation panel, and a wooden block groove is provided between the installation panel and the wooden block. Then, a plurality of bolts are provided on the side of the first bulkhead of the B-type liquid cargo tank opposite to the first outer hull wall of the hull. A liquid cargo tank wooden block is provided between each bolt and the first bulkhead. A support pad block is provided at one end of the liquid cargo tank wooden block opposite to the first outer hull wall. Then, a heat preservation board is provided outside the bolts. A leakage channel is formed between the heat preservation board and the first bulkhead. The width of the leakage channel is equal to the sum of the height of the liquid cargo tank wooden block and the height of the support pad block. Next, a groove corresponding to the shape of the rib plate is cut at the part where the heat preservation board contacts the rib plate of the top floating support, so that the rib plate is embedded in the groove of the heat preservation board. Subsequently, a mold cavity is provided on the top floating support. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A wooden block through hole matching the wooden block is provided on the baffle top plate, so that the baffle top plate is sleeved on the wooden block and located between the first outer hull wall and the wooden block groove. A pouring port is provided on the mold cavity. Next, foaming material is poured into the mold cavity through the pouring port, so that the foaming material wraps the installation panel, the wooden block groove and the rib plates located in the mold cavity. After the foaming material is cured, the baffle top plate and the four baffle side plates are removed. Finally, a protective layer is provided on the outer surface of the foaming material. It can enable the top floating support and the liquid cargo tank to meet both the insulation requirements and the requirements for the leakage channel of the B-type liquid tank. Description of the Drawings

[0034] Figure 1 It shows a flow chart of the installation method of the insulating layer of the top floating support for the B-type liquid cargo tank of the ship provided by the embodiment of the present invention.

[0035] Figure 2 It shows a schematic diagram of the installation position of the top floating support provided by the embodiment of the present invention.

[0036] Figure 3 It shows a schematic diagram of the structure of the top floating support without installing the insulating layer provided by the embodiment of the present invention.

[0037] Figure 4 It shows a schematic diagram of the structure of the top floating support when installing the insulating layer provided by the embodiment of the present invention.

[0038] Figure 5 It shows what is provided by the embodiment of the present inventionFigure 4 Cross-sectional view from the B-B perspective.

[0039] Figure 6 Shown as provided by an embodiment of the present invention Figure 4 Partial enlarged view of location A in the figure.

[0040] Figure 7 Shown as the structural schematic diagram after the installation of the top surface floating prevention support insulation layer provided by an embodiment of the present invention.

[0041] Reference numerals

[0042] 1. Type B liquid cargo tank; 11. First bulkhead; 111. Liquid cargo tank wooden block; 112. Support pad; 113. Bolt; 2. Hull; 21. First outer hull wall; 211. Support member; 3. Top surface floating prevention support; 31. Installation panel; 32. Wooden block groove; 33. Wooden block; 34. Rib plate; 4. Thermal insulation board; 41. Filling through hole; 411. Elastic material; 42. Groove; 5. Mold cavity; 50. Demolding sheet; 51. Baffle side plate; 52. Baffle top plate; 521. Wooden block through hole; 53. Pouring port; 6. Foaming material; 7. Protective layer; 8. Sealant; 9. Leakage channel; 10. Rubber strip. Detailed implementation manners

[0043] The following uses specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0044] It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. Although only the components related to the present invention are shown in the illustrations and are not drawn according to the number, shape, and size of the components in actual implementation, the form, quantity, positional relationship, and ratio of each component in actual implementation can be arbitrarily changed on the premise of implementing the technical solution of the present invention, and the component layout form may also be more complex.

[0045] This embodiment provides an installation method for the insulation layer of the top surface floating prevention support of the Type B liquid cargo tank of a ship. As Figures 1 to 7 shown, the top surface of the Type B liquid cargo tank 1 includes a first bulkhead 11, and the hull 2 of the ship includes a first outer hull wall 21 parallel to the first bulkhead 11. This method includes the following steps:

[0046] S100: Install the top surface anti-floating support on the side of the first bulkhead opposite to the outer wall of the first hull. The top surface of the top surface anti-floating support is provided with a mounting panel parallel to the first bulkhead. The mounting panel is connected to the first bulkhead through a plurality of rib plates. A wooden block is arranged on the mounting panel, and a wooden block groove is arranged between the mounting panel and the wooden block.

[0047] Specifically, referring to Figures 2 to 6 , first, fabricate the B-type liquid cargo tank 1. After the B-type liquid cargo tank 1 is fabricated, install the top surface anti-floating support 3 on the side of the first bulkhead 11 opposite to the outer wall 21 of the first hull. The top surface of the top surface anti-floating support 3 is provided with a mounting panel 31 parallel to the first bulkhead 11. The mounting panel 31 is connected to the first bulkhead 11 through a plurality of rib plates 34. A wooden block 33 is arranged on the mounting panel 31, and a wooden block groove 32 is arranged between the mounting panel 31 and the wooden block 33. Optionally, the wooden block 33 and the wooden block groove 32 are connected by epoxy resin, and the wooden block 33 and the rib plate 34 are also connected by epoxy resin. Then, grind and remove rust from the outer surface of the B-type liquid cargo tank 1 and the top surface anti-floating support 3 to remove surface rust and impurities. Spray an anti-rust primer on the outer surface of the ground B-type liquid cargo tank 1. After the anti-rust primer is cured, clean the outer surface of the B-type liquid cargo tank 1 to remove water, oil, dust and other pollutants to further improve the surface quality and prepare for the spraying of the anti-corrosion layer. Spray an anti-corrosion layer on the outer surface of the B-type liquid cargo tank 1. The B-type liquid cargo tank 1 can effectively prevent the outer surface of the B-type liquid cargo tank 1 from being corroded and extend the service life of the B-type liquid cargo tank 1. The outer surface of the B-type liquid cargo tank 1 includes the side of the first bulkhead 11 of the B-type liquid cargo tank 1 opposite to the outer wall 21 of the first hull of the hull 2.

[0048] S200: Set a plurality of bolts on the side of the first bulkhead of the B-type liquid cargo tank opposite to the outer wall of the first hull of the hull. A liquid cargo tank wooden block is arranged between each bolt and the first bulkhead, and a support pad is arranged at one end of the liquid cargo tank wooden block opposite to the outer wall of the first hull.

[0049] Referring to Figures 2 to 6 , set a plurality of bolts 113 on the surface of the anti-corrosion layer on the side of the first bulkhead 11 of the B-type liquid cargo tank 1 opposite to the outer wall 21 of the first hull of the hull 2. A liquid cargo tank wooden block 111 is arranged between each bolt 113 and the anti-corrosion layer of the first bulkhead 11. The liquid cargo tank wooden block 111 not only plays a supporting role but also can buffer external impact forces to a certain extent. A support pad 112 is arranged at one end of the liquid cargo tank wooden block 111 opposite to the outer wall 21 of the first hull. The height of the support pad 112 can be adjusted to remove local errors caused by the deformation of the surface of the B-type liquid cargo tank 1.

[0050] S300: A heat insulation board is arranged outside the bolt, and a leakage channel is formed between the heat insulation board and the first bulkhead. The width of the leakage channel is equal to the sum of the height of the liquid cargo hold wooden block and the height of the support pad;

[0051] Specifically, referring to Figures 2 to 6 , a heat insulation board 4 is arranged outside the bolt 113. The thickness of the heat insulation board 4 ranges from 50 mm to 70 mm. Further, the thickness of the heat insulation board 4 ranges from 55 mm to 65 mm. In an alternative embodiment of this embodiment, the thickness of the heat insulation board 4 is 60 mm. A leakage channel 9 is formed between the heat insulation board 4 and the first bulkhead 11 of the B-type liquid cargo hold 1. Since a liquid cargo hold wooden block 111 and a support pad 112 are arranged between the bolt 113 and the first bulkhead 11, the width of the leakage channel 9 is equal to the sum of the height of the liquid cargo hold wooden block 111 and the height of the support pad 112. In this embodiment, the width of the leakage channel 9 ranges from 15 mm to 25 mm. Further, the width of the leakage channel 9 ranges from 18 mm to 22 mm. In an alternative embodiment of this embodiment, the width of the leakage channel 9 is 20 mm. The existence of the leakage channel 9 can ensure that when there is a small amount of liquid leakage in the B-type liquid cargo hold 1, the leaked liquid can smoothly pass through the leakage channel 9 to reach a specified leakage container (not shown in the figure), avoiding damage to the hull structure. A filling through hole 41 is arranged on one side of the heat insulation board 5 adjacent to the outside of the bolt 113, and an elastic material 411 is filled in the filling through hole 41. When the temperature changes, the elastic material 411 in the filling through hole 41 will undergo a certain deformation, offsetting a part of the internal stress suffered by the heat insulation board 4 due to thermal expansion and contraction. Preferably, the elastic material 411 is glass wool. The part of the first bulkhead 11 of the B-type liquid cargo hold 1 opposite to the heat insulation board 4 where the bolt 113 is not arranged is filled with a rubber strip 10. The use of the rubber strip 10 can ensure the smoothness of the leakage channel 9 and ensure the safety of the structure of the B-type liquid cargo hold 1 during slight leakage. To ensure the smoothness of the leakage channel 9, the height of the rubber strip 10 is consistent with the width of the leakage channel 9, which not only ensures the connection tightness but also does not hinder the normal operation of the leakage channel 9, thereby ensuring the safe operation of the B-type liquid cargo hold 1 while meeting the insulation and anti-corrosion requirements.

[0052] S400: Cut a groove corresponding to the shape of the rib plate at the part where the heat insulation board contacts the rib plate of the anti-floating support, so that the rib plate is embedded in the groove of the heat insulation board;

[0053] Specifically, referring to Figures 2 to 6, to match the rib 34 on the top surface floating bearing 3, a groove 42 corresponding to the shape of the rib 34 is cut at the contact part between the insulation board 4 and the rib 34 of the top surface floating bearing 3, so that the rib 34 is embedded in the groove 42 of the insulation board 4. Specifically, first, according to the specific shape and size of the rib 34 on the top surface floating bearing 3, the insulation board 4 is accurately measured and marked. Then, a professional cutting tool is used to cut a groove 42 corresponding to the shape of the rib 34 at the contact part between the insulation board 4 and the rib 34. During the cutting process, the dimensional accuracy of the groove should be ensured so that the rib 34 can be smoothly embedded in the groove 42 and there is no obvious gap between the two. To further improve the sealing performance, a sealant 8 is filled between the rib 34 and the insulation board 4. When filling the sealant 8, it is necessary to ensure that the sealant is evenly distributed on the contact surface between the rib 34 and the insulation board 4, and the filling amount should be appropriate, which should not only ensure the sealing effect but also not overflow too much. After the rib 34 is embedded in the groove 42 of the insulation board 4, the joint at the intersection of the two is sealed. The joint is completely filled and smoothed with the sealant 8 to ensure that there is no gap at the joint, thus avoiding leakage accidents caused by the gap at the joint. And the joint at the intersection of the rib 34 and the insulation board 4 is also sealed with the sealant 8.

[0054] S500: A mold cavity is provided on the top surface floating bearing. The mold cavity is located on the surface of the insulation board. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A pad wood through hole matching the pad wood is provided on the baffle top plate, so that the baffle top plate is sleeved on the pad wood and is located between the outer wall of the first hull and the pad wood groove. A pouring port is provided on the mold cavity;

[0055] Refer to Figures 2 to 6, a mold cavity 5 is arranged on the top surface floating bearing 3. The mold cavity 5 is located on the surface of the insulation board 4. The mold cavity 5 includes four baffle side plates 51 and a baffle top plate 52 connecting the four baffle side plates 51. A support member 211 is arranged between the baffle side plate 51 and the outer wall 21 of the first hull. The support member 211 can be an oil cylinder or a jack, etc. The baffle top plate 52 is parallel to the first bulkhead 11. A pad wood through hole 521 matching the packing block 33 is arranged on the baffle top plate 52, so that the baffle top plate 52 is sleeved on the packing block 33 and is located between the outer wall 21 of the first hull and the packing block groove 32. The spacing distance between the baffle top plate 52 and the packing block groove 32 is greater than or equal to 20 mm. In an alternative embodiment of this embodiment, the spacing distance between the baffle top plate 52 and the packing block groove 32 is 20 mm. And a sealant 8 is filled between the pad wood through hole 521 of the baffle top plate 52 and the packing block 33. A pouring port 53 is arranged on the mold cavity 5. When installing the four baffle side plates 51 and the baffle top plate 52, the baffle top plate 52 does not contact the packing block groove 32. A foaming material 6 is filled between the packing block 33 and the packing block groove 32 to prevent the packing block groove 32 from being exposed outside and causing heat conduction phenomenon.

[0056] S600: Pour the foaming material into the mold cavity through the pouring port, and the foaming material wraps the installation panel, so that the packing block groove and the rib plate located in the mold cavity;

[0057] Refer to Figures 2 to 6 , for the convenience of subsequent demolding, before pouring the foaming material 6 into the mold cavity 5 through the pouring port 53, a demolding film 50 is laid on the inner surfaces of the baffle top plate 52 and the four baffle side plates 51. Then, the foaming material 6 is poured into the mold cavity 5 through the pouring port 53, so that the foaming material 6 wraps the installation panel 31, the packing block groove 32 and the rib plate 34 located in the mold cavity 5. The distance between the outer surface of the foaming material 6 and any edge of the rib plate 34 of the top surface floating bearing 3 is greater than or equal to 50 mm.

[0058] S700: Remove the baffle top plate and the four side plates after the foaming material is cured;

[0059] Refer to Figures 2 to 6 , in order to further ensure the insulation effect, a sealant 8 is filled between the insulation board 4 and the cured foaming material 6, and at the same time, a sealant 8 is filled at the corner joint of the foaming material 6 and the packing block 33. Preferably, the support member 211 is removed while removing the baffle top plate 52 and the baffle side plate 51.

[0060] S800: Set a protective layer on the outer surface of the foaming material.

[0061] Refer to Figure 7, after removing the baffle top plate 52 and the four baffle side plates 51, a protective layer 7 is provided on the surface of the foaming material 6. Preferably, the protective layer 7 is an aluminum foil protective layer, and the thickness of the aluminum foil protective layer is between 0.2 mm and 0.4 mm. The aluminum foil protective layer has good airtight and watertight functions and can play a good protective role for the insulating layer.

[0062] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for installing an insulating layer of a top floating support for a B-type liquid cargo tank of a ship, characterized in that, The top surface of the Type B liquid cargo tank includes a first bulkhead, and the hull of the ship includes a first outer hull wall parallel to the first bulkhead. The installation method of the floating support insulation layer on the top surface of the Type B liquid cargo tank of the ship comprises the following steps: Install the top floating support on the side of the first bulkhead opposite to the first outer hull wall. The top surface of the top floating support is provided with a mounting panel parallel to the first bulkhead. The mounting panel is connected to the first bulkhead through a plurality of rib plates. A wooden block is arranged on the mounting panel, and a wooden block groove is arranged between the mounting panel and the wooden block; A plurality of bolts are arranged on the side of the first bulkhead of the Type B liquid cargo tank opposite to the first outer hull wall of the hull. A liquid cargo tank wooden block is arranged between each bolt and the first bulkhead. A support cushion block is arranged at one end of the liquid cargo tank wooden block opposite to the first outer hull wall; A heat preservation board is arranged outside the bolt. A leakage channel is formed between the heat preservation board and the first bulkhead. The width of the leakage channel is equal to the sum of the height of the liquid cargo tank wooden block and the height of the support cushion block; Cut a groove corresponding to the shape of the rib plate at the part where the heat preservation board contacts the rib plate of the top floating support, so that the rib plate is embedded in the groove of the heat preservation board; A mold cavity is arranged on the top floating support. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A wooden block through hole matching the wooden block is arranged on the baffle top plate, so that the baffle top plate is sleeved on the wooden block and located between the first outer hull wall and the wooden block groove. A pouring port is arranged on the mold cavity; Pour foaming material into the mold cavity through the pouring port, so that the foaming material wraps the mounting panel, the wooden block groove and the rib plate located in the mold cavity; Remove the baffle top plate and the four baffle side plates after the foaming material is cured; A protective layer is arranged on the outer surface of the foaming material.

2. The installation method of the insulating layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that Before arranging a plurality of bolts on the side of the first bulkhead of the Type B liquid cargo tank opposite to the first outer hull wall of the hull, it includes: Spray an anti-corrosion layer on the surface of the first bulkhead.

3. The installation method of the insulating layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that Arranging a heat preservation board outside the bolt includes: A filling through hole is arranged on the side of the heat preservation board adjacent to the outside of the bolt, and an elastic material is filled in the filling through hole.

4. The installation method of the insulating layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that, The width of the leakage channel is between 15 mm and 25 mm.

5. The installation method of the insulating layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that Cut a groove corresponding to the shape of the rib plate at the part where the heat preservation board contacts the floating support, so that the rib plate is embedded in the groove of the heat preservation board, including: Fill a sealant between the rib plate and the heat preservation board.

6. The installation method of the insulation layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that A mold cavity is arranged on the top surface floating support, and the mold cavity is located on the surface of the insulation board. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A pad wood through hole matching the pad wood is arranged on the baffle top plate, so that the baffle top plate is sleeved on the pad wood and is located between the outer wall of the first hull and the pad wood groove. A pouring port is arranged on the mold cavity, including: Release films are laid on the inner sides of the baffle top plate and the four side plates.

7. The installation method of the insulation layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that A mold cavity is arranged on the top surface floating support, and the mold cavity is located on the surface of the insulation board. The mold cavity includes four baffle side plates and a baffle top plate connecting the four baffle side plates. The baffle top plate is parallel to the first bulkhead. A pad wood through hole matching the pad wood is arranged on the baffle top plate, so that the baffle top plate is sleeved on the pad wood and is located between the outer wall of the first hull and the pad wood groove. A pouring port is arranged on the mold cavity, including: Supports are arranged between the outer wall of the first hull and the baffle side plates.

8. The installation method of the insulating layer of the top floating support of the Type B liquid cargo tank of a ship according to claim 1, characterized in that, The spacing distance between the baffle top plate and the pad wood groove is greater than or equal to 20 mm.

9. The installation method of the insulation layer of the top floating support of the B-type liquid cargo tank of a ship according to claim 1, characterized in that, After the foaming material is cured, the baffle top plate and the four baffle side plates are removed, and further including: A sealant is filled between the insulation board and the cured foaming material.

10. The installation method of the insulation layer of the B-type liquid cargo tank top surface floating support of the ship according to claim 1, characterized in that A protective layer is arranged on the outer surface of the foaming material, including: The protective layer is an aluminum foil protective layer, and the thickness of the aluminum foil protective layer is between 0.2 mm and 0.4 mm.

11. The installation method of the insulation layer of the top floating support of the B-type liquid cargo tank of a ship according to claim 1, characterized in that, The distance between the outer surface of the foaming material and any edge of the rib plate of the top surface floating support is greater than or equal to 50 mm.

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