Mounting method for insulating layer of anti-rolling support in middle of top surface of B-type liquid cargo tank

Abstract

According to the mounting method for the insulating layer of the top surface middle anti-rolling support of the B-type liquid cargo tank, firstly, the top surface middle anti-rolling support is mounted on the side, opposite to a ship body, of the middle of the top surface of the B-type liquid cargo tank, a plurality of bolts are arranged on the side, opposite to the ship body, of the B-type liquid cargo tank, and a liquid cargo tank sole timber is arranged between each bolt and the B-type liquid cargo tank; a supporting cushion block is arranged at the end, opposite to the ship body, of the liquid cargo tank sole timber. And then an insulation board is arranged on the outer side of the bolt, and a leakage channel is formed between the insulation board and the B-type liquid cargo tank. Then, a mold cavity is formed in the top surface middle anti-rolling support, and the mold cavity is located on the surface of the heat preservation plate. And then a foaming material is poured into the mold cavity, and then the mold cavity is removed after the foaming material is cured. And finally, arranging a protective layer on the outer surface of the foaming material. The insulation requirement between the rolling prevention support in the middle of the top face of the B-type liquid cargo tank and the B-type liquid cargo tank can be met, and the requirement of the B-type liquid cargo tank 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 a method for installing an insulating layer of an intermediate anti-roll support on the top surface of a B-type liquid cargo tank. Background Art

[0002] Liquefied gas carriers are specialized vessels used to transport cryogenic liquid cargoes such as liquefied petroleum gas (LPG) and liquefied natural gas (LNG). These cargoes are loaded into the carrier's cargo tanks. Due to the low temperature of the liquid cargo, insulation is required on the outer surface of the tanks. The main purpose of tank insulation is to prevent external heat from entering the tanks, thereby reducing evaporation from the tanks.

[0003] Based on the type of liquid cargo, workplace, and other factors, cargo tanks on liquefied gas carriers are classified into three types: Type A, Type B, and Type C. Type A independent tanks are primarily flat-bed structures with complete secondary shielding; Type B independent tanks are flat-bed or spherical with partial secondary shielding; and Type C independent tanks are spherical without secondary shielding. The structural characteristics and performance requirements of these three types of tanks necessitate different insulation methods. Type A independent tanks are connected to the ship's hull via a support system. The internal temperature of Type A and Type C tanks is approximately -50°C. Type B tanks are similar in structure to Type A tanks, but the internal temperature is lower, approximately -100°C. Furthermore, Type B tanks require a leak path in the event of a small leak, necessitating an effective insulation system to achieve both thermal insulation and ensure that any leaked liquid can pass through the leak path to the appropriate storage area.

[0004] Type B cargo tanks are complex structures, with numerous supporting structures connected to them, such as the top middle anti-roll support and the top end anti-roll supports. The top middle anti-roll support is installed in the middle of the top surface of the Type B cargo tank, between the top end anti-roll supports, and serves to supplement the bottom end anti-roll supports. Therefore, the top middle anti-roll support is an indispensable structure for Type B cargo tanks. However, the top middle anti-roll support protrudes from the tank surface and has ribs and skids. Prefabricated insulation panels cannot be completely seamlessly joined, creating a risk of temperature loss. Furthermore, the upper ribs at the top middle anti-roll support are welded to the Type B cargo tank, allowing the low temperature of the Type B cargo tank to be directly transferred to the skids. Therefore, the insulation in the Type B cargo tank must be thickened and completely sealed around the tank. The insulation layer must be applied all the way to the skids to prevent temperature loss. Furthermore, Type B cargo tanks have leakage path requirements. The existing technology cannot simultaneously solve the insulation problem of the main body of a Type B liquid cargo tank and meet the requirements of the Type B liquid tank for leakage channels. Summary of the Invention

[0005] In view of the problems existing in the prior art as described above, the present application provides a method for installing an insulating layer of the middle anti-roll support on the top surface of a type B liquid cargo tank, which can ensure that the insulation requirements between the middle anti-roll support on the top surface of the type B liquid cargo tank and the type B liquid cargo tank are met, and the requirements of the type B liquid tank for leakage channels are met.

[0006] To achieve the above and other related purposes, the present invention provides a method for installing an insulating layer of an intermediate anti-roll support on the top surface of a type B liquid cargo tank, comprising the following steps:

[0007] The top middle anti-roll bearing is installed on the middle side of the top surface of the type B liquid cargo tank opposite to the hull of the ship. Vertical mounting panels are provided at the left and right ends of the top middle anti-roll bearing. The mounting panels are connected to the type B liquid cargo tank through a plurality of ribs. Skids are provided on the outer sides of the two mounting panels, and skid grooves are provided between the mounting panels and the skids.

[0008] A plurality of bolts are provided on the side of the type B liquid cargo tank opposite to the hull, a liquid cargo tank skid is provided between each bolt and the type B liquid cargo tank, and a supporting pad is provided on the end of the liquid cargo tank skid opposite to the hull;

[0009] An insulation board is provided on the outside of the bolts to form a leakage channel between the insulation board and the type B cargo tank. The width of the leakage channel is equal to the sum of the height of the cargo tank skids and the height of the supporting pads;

[0010] A mold cavity is provided on the anti-roll support in the middle of the top surface. The mold cavity is located on the surface of the insulation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. The baffle side plates are provided with through holes for pads that match the pads, so that the baffle side plates are sleeved on the pads. A pouring port is provided on the mold cavity.

[0011] Pouring the foaming material into the mold cavity through the pouring port so that the foaming material wraps the installation panel, the skid groove and the ribs located in the mold cavity;

[0012] After the foam material is solidified, the baffle top plate and the plurality of baffle side plates are removed;

[0013] A protective layer is provided on the outer surface of the foam material.

[0014] Optionally, before a plurality of bolts are provided on the side of the type B cargo tank opposite to the hull, the method includes:

[0015] Spray anti-corrosion coating on the side of type B cargo tank opposite to the hull.

[0016] Optionally, an insulation board is provided on the outside of the bolt, including:

[0017] A filling through hole is provided on one side of the heat preservation plate adjacent to the outer side of the bolt, and the filling through hole is filled with elastic material.

[0018] Optionally, the width of the leakage channel is between 15 mm and 25 mm.

[0019] Optionally, a mold cavity is provided on the anti-roll support in the middle of the top surface. The mold cavity is located on the surface of the insulation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. The baffle side plates are provided with through holes for pads that match the pads, so that the baffle side plates are sleeved on the pads. The mold cavity is provided with a pouring port, including:

[0020] A release sheet is placed on the inner side of the mold cavity.

[0021] Optionally, a mold cavity is provided on the anti-roll support in the middle of the top surface. The mold cavity is located on the surface of the insulation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. The baffle side plates are provided with through holes for pads that match the pads, so that the baffle side plates are sleeved on the pads. The mold cavity is provided with a pouring port, including:

[0022] A support member is provided between the hull and the baffle top plate.

[0023] Optionally, the minimum spacing distance between each baffle side plate and the adjacent skid groove is greater than 20 mm.

[0024] Optionally, after the foam material is solidified, the baffle top plate and the plurality of baffle side plates are removed, further comprising:

[0025] Fill the gap between the insulation board and the solidified foam material with sealant.

[0026] Optionally, a protective layer is provided on the outer surface of the foam material, comprising:

[0027] 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.

[0028] Optionally, the distance between the outer surface of the foam material and any edge of the rib of the anti-floating support is greater than or equal to 50 mm.

[0029] As described above, the method for installing the insulation layer of the intermediate anti-roll support on the top surface of a type B liquid cargo tank provided by the present invention has at least the following beneficial technical effects:

[0030] The method for installing the insulating layer of the middle anti-roll support on the top surface of a type B liquid cargo tank of the present invention comprises the following steps: first, installing the middle anti-roll support on the top surface of the type B liquid cargo tank on the side opposite to the hull of the ship in the middle of the top surface; vertical installation panels are provided on the left and right ends of the middle anti-roll support on the top surface; the installation panels are connected to the type B liquid cargo tank via a plurality of ribs; wooden blocks are provided on the outer sides of the two installation panels; and wooden block grooves are provided between the installation panels and the wooden blocks. Then, a plurality of bolts are provided on the side of the type B liquid cargo tank opposite to the hull; a liquid cargo tank wooden block is provided between each bolt and the type B liquid cargo tank; and a support block is provided on the end of the liquid cargo tank wooden block opposite to the hull. Then, an insulation board is provided on the outer side of the bolt; a leakage channel is formed between the insulation board and the type B liquid cargo tank; 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 block. Next, a mold cavity is set on the middle anti-roll support of the top surface. The mold cavity is located on the surface of the insulation board. The mold cavity includes a baffle top plate and multiple baffle side plates. The baffle side plates are provided with pad through holes that match the pads, so that the baffle side plates are sleeved on the pads. A pouring port is provided on the mold cavity. Then, the foaming material is poured into the mold cavity through the pouring port so that the foaming material wraps the installation panel, the pad groove and the ribs located in the mold cavity. After the foaming material solidifies, the baffle top plate and the multiple baffle side plates are removed. Finally, a protective layer is set on the outer surface of the foam material. This can ensure that the insulation requirements between the middle anti-roll support on the top surface of the type B liquid cargo tank and the type B liquid cargo tank are met, as well as the requirements of the type B liquid tank for leakage channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic flow chart showing a method for installing an insulating layer of an intermediate anti-roll support on the top surface of a type B liquid cargo tank provided by an embodiment of the present invention.

[0032] Figure 2 Shown is a schematic diagram of the installation position of the top middle anti-roll support provided by an embodiment of the present invention.

[0033] Figure 3 Shown is a schematic structural diagram of the top surface middle anti-roll support provided by an embodiment of the present invention when no insulating layer is installed.

[0034] Figure 4 It shows a schematic structural diagram of the top surface middle anti-roll support provided by an embodiment of the present invention when an insulating layer is installed.

[0035] Figure 5 The embodiment of the present invention provides Figure 4 Cross-sectional view from BB's perspective.

[0036] Figure 6 The embodiment of the present invention provides Figure 4 A partial enlarged view of point A in the middle.

[0037] Figure 7It is a schematic diagram showing the structure after the insulation layer is installed on the top middle anti-roll support provided by an embodiment of the present invention.

[0038] Reference numerals

[0039] 1. Type B cargo tank; 111. Cargo tank skids; 112. Support blocks; 113. Bolts; 2. Hull; 211. Support members; 3. Top intermediate anti-roll bearing; 31. Mounting panel; 32. Skid grooves; 33. Skids; 34. Ribs; 4. Insulation panels; 41. Filling holes; 411. Elastic material; 5. Mold cavity; 50. Release sheet; 51. Baffle side panels; 52. Baffle top panel; 521. Skid holes; 53. Filling port; 6. Foaming material; 7. Protective layer; 8. Sealant; 9. Leakage channel; 10. Rubber strips. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0041] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation, the form, quantity, positional relationship and proportion of each component in actual implementation can be changed at will under the premise of realizing the technical solution of this party, and the component layout form may also be more complicated.

[0042] like Figures 1 to 7 As shown, this embodiment provides a method for installing an insulation layer of an intermediate anti-roll support on the top surface of a type B liquid cargo tank, comprising the following steps:

[0043] S100: Installing the top middle anti-roll bearing on the middle side of the top surface of the type B liquid cargo tank opposite to the hull of the ship, with vertical mounting panels provided on the left and right ends of the top middle anti-roll bearing, the mounting panels being connected to the type B liquid cargo tank via a plurality of ribs, with skids provided on the outer sides of the two mounting panels, respectively, and skid grooves provided between the mounting panels and the skids;

[0044] like Figures 2 to 7As shown, a Type B liquid cargo tank 1 is first manufactured. After the Type B liquid cargo tank 1 is manufactured, the top middle anti-roll bearing 3 is installed in the middle of the bottom surface of the Type B liquid cargo tank 1 on the side opposite to the hull 2 ​​of the ship. Vertical mounting panels 31 are provided on the left and right ends of the top middle anti-roll bearing 3. The mounting panels 31 are connected to the Type B liquid cargo tank 1 through ribs 34. Wood blocks 33 are provided on the outside of the two mounting panels 31, and wood block grooves 32 are provided between the mounting panels 31 and the wood blocks 33. The outer surface of the Type B liquid cargo tank 1 and the top middle anti-roll bearing 3 are then polished and derusted to remove surface rust and impurities. Anti-rust primer is sprayed on the polished outer surface of the Type B liquid cargo tank 1. After the anti-rust primer is cured, the outer surface of the Type B liquid cargo tank 1 is cleaned to remove water, oil, dust and other contaminants to further improve the surface quality and prepare for the spraying of the anti-corrosion layer. An anti-corrosion layer is sprayed on the outer surface of the B-type liquid cargo tank 1 , which can effectively prevent the outer surface of the B-type liquid cargo tank 1 from being corroded, thereby extending the service life of the B-type liquid cargo tank 1 .

[0045] S200: a plurality of bolts are provided on a side of the type B liquid cargo tank opposite to the hull, a liquid cargo tank skid is provided between each of the bolts and the type B liquid cargo tank, and a support block is provided on an end of the liquid cargo tank skid opposite to the hull;

[0046] Specifically, refer to Figures 2 to 7 Multiple bolts 113 are installed on the surface of the anti-corrosion layer on the side of the Type B cargo tank 1 opposite the hull 2. A cargo tank skid 111 is placed between each bolt 113 and the anti-corrosion layer of the Type B cargo tank 1. The skid 111 not only provides support but also, to a certain extent, cushions external impact forces. A support block 112 is installed on the end of the skid 111 opposite the hull 2. The height of the support block 112 is adjustable, which can eliminate local errors caused by deformation of the surface of the Type B cargo tank 1.

[0047] S300: installing an insulation board on the outer side of the bolt, forming a leakage channel between the insulation board and the type B liquid cargo tank, wherein the width of the leakage channel is equal to the sum of the height of the liquid cargo tank skid and the height of the support block;

[0048] Specifically, refer to Figures 2 to 7An insulation board 4 is installed outside the bolts 113. The thickness of the insulation board 4 ranges from 50 mm to 70 mm. Furthermore, the thickness of the insulation board 4 ranges from 55 mm to 65 mm. In an alternative embodiment of this embodiment, the thickness of the insulation board 4 is 60 mm. A leakage channel 9 is formed between the insulation board 4 and the Type B liquid cargo tank 1. Because the liquid cargo tank skids 111 and the support blocks 112 are installed between the bolts 113 and the Type B liquid cargo tank 1, the width of the leakage channel 9 is equal to the sum of the height of the liquid cargo tank skids 111 and the height of the support blocks 112. In this embodiment, the width of the leakage channel 9 ranges from 15 mm to 25 mm. Furthermore, 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 presence of the leakage channel 9 ensures that if a small amount of liquid leaks from the Type B liquid cargo tank 1, the leaked liquid can smoothly pass through the leakage channel 9 to the designated leakage container (not shown), avoiding damage to the hull structure. A filling through-hole 41 is provided on the side of the insulation board 5 adjacent to the outer side of the bolt 113, and the filling through-hole 41 is filled with an elastic material 411. 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 of the insulation board 4 due to thermal expansion and contraction. Preferably, the elastic material 411 is glass wool. The part of the side of the Type B liquid cargo tank 1 opposite to the insulation board 4 where the bolt 113 is not provided is filled with a rubber strip 10. The use of the rubber strip 10 can ensure the patency of the leakage channel 9 and ensure that the structure of the Type B liquid cargo tank 1 is still safe when a slight leak occurs. In order to ensure the patency of the leakage channel 9, the height of the rubber strip 10 is consistent with the width of the leakage channel 9. This not only ensures the sealing of the connection, but also does not hinder the normal operation of the leakage channel 9, thereby ensuring the safe operation of the Type B liquid cargo tank 1 while meeting the insulation and anti-corrosion requirements.

[0049] To mate with the ribs 34 on the top middle anti-roll support 3, grooves 42 corresponding to the shape of the ribs 34 are cut in the insulation board 4 where they contact the ribs 34, allowing the ribs 34 to fit within the grooves 42. Specifically, first, the insulation board 4 is precisely measured and marked based on the specific shape and dimensions of the ribs 34 on the top middle anti-roll support 3. Then, using specialized cutting tools, grooves 42 corresponding to the shape of the ribs 34 are cut in the insulation board 4 where they contact the ribs 34. During the cutting process, the grooves must be precisely sized to ensure that the ribs 34 fit smoothly into the grooves 42 without any noticeable gaps between them. To further enhance sealing performance, sealant 8 is filled between the ribs 34 and the insulation board 4. When filling the sealant 8, ensure that it is evenly distributed across the contact surface between the ribs 34 and the insulation board 4, and the filler should be moderate, ensuring a good seal without excessive overflow. After the ribs 34 are inserted into the grooves 42 of the insulation board 4, the joints between the two are sealed by completely filling and smoothing the joints with sealant 8 to ensure that there are no gaps at the joints, thereby preventing leakage accidents caused by gaps at the joints. The joints between the ribs 34 and the insulation board 4 are also sealed with sealant 8.

[0050] S400: a mold cavity is provided on the middle anti-roll support of the top surface, the mold cavity is located on the surface of the insulation board, the mold cavity includes a baffle top plate and a plurality of baffle side plates, the baffle side plates are provided with through holes for pads matching the pads, so that the baffle side plates are sleeved on the pads, and a pouring port is provided on the mold cavity;

[0051] Reference Figures 2 to 7 A mold cavity 5 is provided on the anti-roll support 3 in the middle of the top surface. The mold cavity 5 is located on the surface of the insulation board 4 and is provided with a pouring port 53. The mold cavity 5 includes a plurality of baffle side panels 51 and a baffle top panel 52 connecting the four baffle side panels 51. A support member 211 is provided between the baffle top panel 52 and the hull 2. The support member 211 can be a cylinder or a jack. The baffle side panels 51 are provided with a pad through hole 521 that matches the pad 33, so that the baffle side panels 51 can be mounted on the pad 33. The spacing between the baffle side panels 51 and the pad groove 32 is between 15 mm and 25 mm. Furthermore, the spacing between the baffle side panels 51 and the pad groove 32 is between 18 mm and 22 mm. In an optional embodiment of this embodiment, the spacing between the baffle side panels 51 and the pad groove 32 is 20 mm. And the sealant 8 is filled between the skid through-hole 521 of the baffle side plate 51 and the skid 33. When multiple baffle side plates 51 and the baffle top plate 52 are installed, the baffle side plates 51 do not contact the skid groove 32, and the foam material 6 is filled between the skid 33 and the skid groove 32 to prevent the skid groove 32 from being exposed to the outside and causing heat conduction.

[0052] S500: pouring a foaming material into the mold cavity through the pouring port, so that the foaming material wraps the installation panel, the skid groove, and the rib plate located in the mold cavity;

[0053] Reference Figure 4 To facilitate subsequent demolding, a release sheet 50 is applied to the inner surfaces of the baffle top plate 52 and the four baffle side plates 51 before pouring the foam material 6 into the mold cavity 5 through the pouring port 53. The foam material 6 is then poured into the mold cavity 5 through the pouring port 53, wrapping around the mounting panel 31, the skid groove 32, and the ribs 34 within the mold cavity 5. The distance between the outer surface of the foam material 6 and any edge of the ribs 34 of the anti-floating support 3 is greater than or equal to 50 mm.

[0054] S600: after the foam material is solidified, removing the baffle top plate and the plurality of side plates;

[0055] Reference Figure 7 To further ensure the insulation effect, a sealant 8 is filled between the insulation board 4 and the cured foam material 6, and at the same time, a sealant 8 is filled in the corners between the foam material 6 and the skid 33. Preferably, the support member 211 is removed while the baffle top plate 52 and the baffle side plates 51 are removed.

[0056] S700: providing a protective layer on the outer surface of the foaming material.

[0057] Reference Figure 7 After removing the baffle top plate 52 and the four baffle side plates 51, a protective layer 7 is placed on the surface of the foam material 6. Preferably, the protective layer 7 is an aluminum foil protective layer with a thickness of 0.2 mm to 0.4 mm. The aluminum foil protective layer has excellent airtightness and watertightness, and can provide good protection for the insulation layer.

[0058] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A method for installing the insulation layer of the middle anti-roll support on the top surface of a type B liquid cargo tank, characterized in that: The following steps are involved: The top middle anti-roll support is installed on the middle side of the top surface of the Type B liquid cargo tank opposite to the hull of the ship, with vertical mounting panels provided on the left and right ends of the top middle anti-roll support. The mounting panels are connected to the Type B liquid cargo tank via a plurality of ribs. A skid is provided on the outer side of each of the two mounting panels, and a skid groove is provided between the mounting panels and the skids. A plurality of bolts are provided on a side of the type B liquid cargo tank opposite to the hull, a liquid cargo tank skid is provided between each of the bolts and the type B liquid cargo tank, and a support block is provided on an end of the liquid cargo tank skid opposite to the hull; An insulation board is provided on the outer side of the bolt, and a leakage channel is formed between the insulation board and the type B liquid cargo tank, wherein the width of the leakage channel is equal to the sum of the height of the liquid cargo tank skid and the height of the supporting block; A mold cavity is provided on the middle anti-roll support of the top surface, the mold cavity is located on the surface of the insulation board, the mold cavity includes a baffle top plate and a plurality of baffle side plates, the baffle side plates are provided with pad through holes matching the pads, so that the baffle side plates are sleeved on the pads, and a pouring port is provided on the mold cavity; pouring a foaming material into the mold cavity through the pouring port so that the foaming material wraps the installation panel, the skid groove, and the rib plate located in the mold cavity; After the foam material is solidified, the baffle top plate and the plurality of baffle side plates are removed; A protective layer is provided on the outer surface of the foaming material.

2. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: Before a plurality of bolts are provided on the side of the type B cargo tank opposite to the hull, the method comprises: An anti-corrosion layer is sprayed on the side of the type B liquid cargo tank opposite to the hull.

3. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: An insulation board is provided on the outer side of the bolt, comprising: A filling through hole is provided on a side of the heat insulation board adjacent to the outer side of the bolt, and the filling through hole is filled with elastic material.

4. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: The width of the leakage channel is between 15 mm and 25 mm.

5. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: A mold cavity is provided on the middle anti-roll support of the top surface. The mold cavity is located on the surface of the insulation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. The baffle side plates are provided with through holes for pads matching the pads, so that the baffle side plates are sleeved on the pads. The mold cavity is provided with a pouring port, including: A release sheet is laid on the inner side of the mold cavity.

6. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: A mold cavity is provided on the middle anti-roll support of the top surface. The mold cavity is located on the surface of the insulation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. The baffle side plates are provided with through holes for pads matching the pads, so that the baffle side plates are sleeved on the pads. The mold cavity is provided with a pouring port, including: A support member is provided between the hull and the baffle top plate.

7. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: The minimum spacing distance between each baffle side plate and the adjacent wood slot is greater than 20 mm.

8. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1 is characterized in that: After the foam material is solidified, the baffle top plate and the plurality of baffle side plates are removed, further comprising: A sealant is filled between the insulation board and the solidified foam material.

9. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1, characterized in that: A protective layer is provided on the outer surface of the foaming material, comprising: 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.

10. The method for installing the insulation layer of the middle anti-roll bearing on the top surface of a type B liquid cargo tank according to claim 1, characterized in that: The distance between the outer surface of the foam material and any edge of the rib of the anti-floating support is greater than or equal to 50 mm.

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