Installation method of insulation layer of anti-rolling support in middle of bottom surface of B-type liquid cargo tank

Abstract

The installation method of the insulation layer of the bottom surface middle anti-rolling support of the B-type liquid cargo tank comprises the steps that firstly, the bottom surface middle anti-rolling support is installed on the side, opposite to a ship body, of the middle of the bottom 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, a liquid cargo tank sole timber is arranged between each bolt and the B-type liquid cargo tank, and a supporting cushion block is arranged at the end, opposite to the ship body, of each liquid cargo tank sole timber. And then an insulation board is arranged on the outer side of the bolt, a leakage channel is formed between the insulation board and the B-type liquid cargo tank, and the width of the leakage channel is equal to the sum of the height of the liquid cargo tank sole timber and the height of the supporting cushion block. Then, a mold cavity is formed in the bottom 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 can be met, and the requirement of a B-type liquid 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 particularly to an installation method for an insulating layer of a middle anti-rolling support on the bottom surface of a Type B liquid cargo tank. 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 rate 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: Type A, Type B, and Type C. Among them, the Type A independent liquid cargo tank is mainly a flat structure with a complete secondary shield; the Type B independent liquid cargo tank is a flat structure or a spherical tank type with a partial secondary shield; the Type C 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 methods of installing insulation also differ. Among them, the Type A independent liquid cargo tank is connected to the hull through a support system. The temperature inside the Type A and Type C liquid cargo tanks is about -50°C. The structure of the Type B liquid cargo tank is partially similar to that of the Type A liquid cargo tank, but the temperature inside the Type B liquid cargo tank is lower, about -100°C. Moreover, the Type B liquid cargo tank has a requirement for a small amount of liquid leakage and must be provided with a leakage channel. Therefore, an effective insulation system must be used to achieve heat preservation while ensuring that a small amount of leaked liquid can reach the corresponding storage area through the leakage channel.

[0004] The structure of the Type B liquid cargo tank is complex, and there are many support structures connected to the liquid cargo tank, such as anti-rolling supports at both ends of the bottom surface and a middle anti-rolling support on the bottom surface. The middle anti-rolling support on the bottom surface is installed in the middle position of the bottom surface of the Type B liquid cargo tank, that is, between the anti-rolling supports at both ends of the bottom surface. The middle anti-rolling support on the bottom surface plays an auxiliary role for the anti-rolling supports at both ends of the bottom surface. Therefore, the middle anti-rolling support on the bottom surface is one of the indispensable structures of the Type B liquid cargo tank. However, the middle anti-rolling support on the bottom surface protrudes from the surface of the tank body, with rib plates and wooden pads. The prefabricated insulation board cannot be completely seamlessly spliced, and there is a risk of temperature loss. Moreover, the upper rib plate at the middle anti-rolling support on the bottom surface is welded to the Type B liquid cargo tank, and the low temperature of the Type B liquid cargo tank can be directly conducted to the wooden pad. Therefore, the insulation at the Type B liquid cargo tank must be thickened, and the tank body must be completely sealed and wrapped. The insulating layer must be laid all the way to the wooden pad to effectively prevent temperature loss. In addition, the Type B liquid cargo tank has requirements for leakage channels. In the prior art, it is impossible to simultaneously solve the insulation of the main part of the 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 above-mentioned prior art, the present application provides an installation method for the insulating layer of the intermediate anti-rolling support on the bottom surface of the Type B liquid cargo tank, which can enable the intermediate anti-rolling support on the bottom surface of the Type B liquid cargo tank and the Type B liquid cargo tank to meet both the insulation requirements and the requirements for the leakage channel of the Type B liquid tank.

[0006] To achieve the above object and other related objects, the present invention provides an installation method for the insulating layer of the intermediate anti-rolling support on the bottom surface of the Type B liquid cargo tank, including the following steps:

[0007] Install the intermediate anti-rolling support on the bottom surface in the middle of the side of the ground of the Type B liquid cargo tank opposite to the hull of the ship. Vertical installation panels are provided at the left and right ends of the intermediate anti-rolling support on the bottom surface. The installation panels are connected to the Type B liquid cargo tank through a plurality of rib plates. Skids are respectively provided on the outer sides of the two installation panels, and a skid groove is provided between the installation panel and the skid.

[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. A support pad is provided at the end of the liquid cargo tank skid opposite to the hull.

[0009] A heat preservation board is provided outside the bolt. A leakage channel is formed between the heat preservation 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 skid and the height of the support pad.

[0010] A mold cavity is provided on the intermediate anti-rolling support on the bottom surface. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. Pad through holes matching the skids are provided on the baffle side plates, so that the baffle side plates are sleeved on the skids. A pouring port is provided on the mold cavity.

[0011] Pour 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 plates located in the mold cavity.

[0012] After the foaming material is cured, remove the baffle top plate and the plurality of baffle side plates.

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

[0014] Optionally, before providing a plurality of bolts on the side of the Type B liquid cargo tank opposite to the hull, it includes:

[0015] Spray an anti-corrosion layer on the side of the Type B liquid cargo tank opposite to the hull.

[0016] Optionally, providing a heat preservation board outside the bolt includes:

[0017] A filling through hole is provided 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.

[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-rolling support in the middle of the bottom 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 wood through holes matching the pad wood, so that the baffle side plates are sleeved on the pad wood. A pouring port is provided on the mold cavity, including:

[0020] A demolding sheet is laid on the inner side of the mold cavity.

[0021] Optionally, a mold cavity is provided on the anti-rolling support in the middle of the bottom 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 wood through holes matching the pad wood, so that the baffle side plates are sleeved on the pad wood. A pouring port is provided on the mold cavity, 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 pad wood groove is greater than 20 mm.

[0024] Optionally, after the foaming material is cured, the baffle top plate and the plurality of baffle side plates are removed. It also includes:

[0025] A sealant is filled between the insulation board and the cured foaming material.

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

[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 foaming material and any edge of the rib plate of the anti-floating support is greater than or equal to 50 mm.

[0029] As described above, the installation method of the insulation layer of the anti-rolling support in the middle of the bottom surface of the B-type liquid cargo tank provided by the present invention at least has the following beneficial technical effects:

[0030] Installation method of insulating layer for anti-rolling support in the middle of the bottom surface of Type B liquid cargo tank of the present invention. First, install the anti-rolling support in the middle of the bottom surface on the side opposite to the hull of the ship at the middle of the bottom surface of the Type B liquid cargo tank. Vertical installation panels are provided at the left and right ends of the anti-rolling support in the middle of the bottom surface. The installation panels are connected to the Type B liquid cargo tank through multiple rib plates. Wooden pads are respectively provided on the outer sides of the two installation panels, and a wooden pad groove is provided between the installation panel and the wooden pad. 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 pad is provided between each bolt and the Type B liquid cargo tank. A support cushion block is provided at the end of the liquid cargo tank wooden pad opposite to the hull. Then, a heat preservation board is provided outside the bolt. A leakage channel is formed between the heat preservation 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 pad and the height of the support cushion block. Next, a mold cavity is provided on the anti-rolling support in the middle of the bottom surface. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes a baffle top plate and multiple baffle side plates. Through holes matching the wooden pads are provided on the baffle side plates, so that the baffle side plates are sleeved on the wooden pads. A pouring port is provided on the mold cavity. Subsequently, foaming material is poured into the mold cavity through the pouring port, so that the foaming material wraps the installation panel, the wooden pad groove and the rib plates located in the mold cavity. After that, the baffle top plate and the multiple baffle side plates are removed after the foaming material is cured. Finally, a protective layer is provided on the outer surface of the foaming material. It can enable the anti-rolling support in the middle of the bottom surface of the Type B liquid cargo tank and the Type B liquid cargo tank to meet both the insulation requirements and the requirements for the leakage channel of the Type B liquid tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It shows a schematic flow chart of the installation method of the insulating layer for the anti-rolling support in the middle of the bottom surface of the Type B liquid cargo tank provided by the embodiment of the present invention.

[0032] Figure 2 It shows a schematic diagram of the installation position of the anti-rolling support in the middle of the bottom surface provided by the embodiment of the present invention.

[0033] Figure 3 It shows a schematic structural diagram of the anti-rolling support in the middle of the bottom surface without installing the insulating layer provided by the embodiment of the present invention.

[0034] Figure 4 It shows a schematic structural diagram of the anti-rolling support in the middle of the bottom surface when installing the insulating layer provided by the embodiment of the present invention.

[0035] Figure 5 It shows provided by the embodiment of the present invention Figure 4 Cross-sectional view from B-B perspective.

[0036] Figure 6 It shows provided by the embodiment of the present invention Figure 4 Partial enlarged view at A in the middle.

[0037] Figure 7It shows a schematic structural diagram after the installation of the insulating layer of the anti-rolling support in the middle of the bottom surface provided by the embodiment of the present invention.

[0038] Reference numerals

[0039] 1. B-type liquid cargo tank; 111. Liquid cargo tank wooden block; 112. Supporting cushion block; 113. Bolt; 2. Hull; 211. Support member; 3. Anti-rolling support in the middle of the bottom surface; 31. Installation panel; 32. Wooden block groove; 33. Wooden block; 34. Rib plate; 4. Thermal insulation board; 41. Filling through hole; 411. Elastic material; 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

[0040] The following uses specific 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.

[0041] It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although only the components related to the present invention are shown in the diagrams 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.

[0042] As Figures 1 to 7 shown, this embodiment provides a method for installing an insulating layer of an anti-rolling support in the middle of the bottom surface of a B-type liquid cargo tank, including the following steps:

[0043] S100: Set the anti-rolling support in the middle of the bottom surface on the side opposite to the hull of the ship at the middle of the bottom surface of the B-type liquid cargo tank. Vertical installation panels are provided at the left and right ends of the anti-rolling support in the middle of the bottom surface. The installation panels are connected to the B-type liquid cargo tank through a plurality of rib plates. Wooden blocks are respectively provided on the outer sides of the two installation panels, and a wooden block groove is provided between the installation panel and the wooden block;

[0044] As Figures 1 to 7As shown in the figure, first, the Type B liquid cargo tank 1 is fabricated. After the fabrication of the Type B liquid cargo tank 1 is completed, the anti-rolling support 3 in the middle of the bottom surface is installed on the side of the middle of the bottom surface of the Type B liquid cargo tank 1 opposite to the hull 2 of the ship. An installation panel 31 is provided on the side surface of the anti-rolling support 3 in the middle of the bottom surface. The installation panel 31 is connected to the Type B liquid cargo tank 1 through a rib plate 34. Fender timbers 33 are respectively provided on the outer sides of the two installation panels 31, and a fender timber groove 32 is provided between the installation panel 31 and the fender timber 33. Then, the outer surface of the Type B liquid cargo tank 1 and the anti-rolling support 3 in the middle of the bottom surface are ground and derusted to remove the rust and impurities on the surface. An anti-rust primer is sprayed on the outer surface of the ground 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 surface-cleaned to remove water, oil, dust and other pollutants, so as 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 Type B liquid cargo tank 1. The Type B liquid cargo tank 1 can effectively prevent the outer surface of the Type B liquid cargo tank 1 from being corroded and extend the service life of the Type B liquid cargo tank 1.

[0045] S200: A plurality of bolts are provided on the side of the Type B liquid cargo tank opposite to the hull. A liquid cargo tank fender timber is provided between each bolt and the Type B liquid cargo tank. A support pad is provided at one end of the liquid cargo tank fender timber opposite to the hull.

[0046] Specifically, referring to Figures 2 to 7 , a plurality of bolts 113 are provided on the surface of the anti-corrosion layer on the side of the Type B liquid cargo tank 1 opposite to the hull 2. A liquid cargo tank fender timber 111 is provided between each bolt 113 and the anti-corrosion layer of the Type B liquid cargo tank 1. The liquid cargo tank fender timber 111 not only plays a supporting role but also can buffer external impact forces to a certain extent. A support pad 112 is provided at one end of the liquid cargo tank fender timber 111 opposite to the hull 2. The height of the support pad 112 can be adjusted to remove local errors caused by the deformation of the surface of the Type B liquid cargo tank 1.

[0047] S300: A heat preservation board is provided on the outer side of the bolt. A leakage channel is formed between the heat preservation 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 fender timber and the height of the support pad.

[0048] Specifically, referring to Figures 2 to 7, a heat preservation board 4 is arranged on the outer side of the bolt 113. The thickness of the heat preservation board 4 is between 50 mm and 70 mm. Further, the thickness of the heat preservation board 4 is between 55 mm and 65 mm. In an alternative embodiment of this embodiment, the thickness of the heat preservation board 4 is 60 mm. A leakage channel 9 is formed between the heat preservation board 4 and the B-type liquid cargo tank 1. Since a liquid cargo tank wooden block 111 and a support cushion block 112 are arranged between the bolt 113 and the B-type liquid cargo tank 1, the width of the leakage channel 9 is equal to the sum of the height of the liquid cargo tank wooden block 111 and the height of the support cushion block 112. In this embodiment, the width of the leakage channel 9 is between 15 mm and 25 mm. Further, the width of the leakage channel 9 is between 18 mm and 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 tank 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 preservation board 5 adjacent to the outer side 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 preservation board 4 due to thermal expansion and contraction. Preferably, the elastic material 411 is glass wool. The part of the B-type liquid cargo tank 1 opposite to the heat preservation 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 tank 1 when there is a 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 tank 1 while meeting the insulation and anti-corrosion requirements.

[0049] To match the rib plate 34 on the intermediate anti-rolling support 3 at the bottom surface, a groove 42 corresponding to the shape of the rib plate 34 is cut at the part where the insulation board 4 contacts the rib plate 34 of the intermediate anti-rolling support 3 at the bottom surface, so that the rib plate 34 is embedded in the groove 42 of the insulation board 4. Specifically, first, according to the specific shape and size of the rib plate 34 on the intermediate anti-rolling support 3 at the bottom surface, 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 plate 34 at the part where the insulation board 4 contacts the rib plate 34. During the cutting process, the dimensional accuracy of the groove should be ensured so that the rib plate 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 plate 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 plate 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 plate 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 plate 34 and the insulation board 4 is also sealed with the sealant 8.

[0050] S400: A mold cavity is provided on the intermediate anti-rolling support at the bottom 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. Pad wood through holes matching the pad wood are provided on the baffle side plates, so that the baffle side plates are sleeved on the pad wood. A pouring port is provided on the mold cavity;

[0051] Refer to Figures 2 to 7 , a mold cavity 5 is provided on the intermediate anti-rolling support 3 at the bottom surface. The mold cavity 5 is located on the surface of the insulation board 4. A pouring port 53 is provided on the mold cavity 5. The mold cavity 5 includes a plurality of baffle side plates 51 and a baffle top plate 52 connecting the four baffle side plates 51. A support member 211 is provided between the baffle top plate 52 and the hull 2. The support member 211 can be an oil cylinder or a jack, etc. Pad wood through holes 521 matching the pad wood 33 are provided on the baffle side plates 51, so that the baffle side plates 51 are sleeved on the pad wood 33. The interval distance between the baffle side plate 51 and the pad wood groove 32 is between 15 mm and 25 mm. Further, the interval distance between the baffle side plate 51 and the pad wood groove 32 is between 18 mm and 22 mm. In an optional embodiment of this embodiment, the interval distance between the baffle side plate 51 and the pad wood groove 32 is 20 mm. And a sealant 8 is filled between the pad wood through hole 521 of the baffle side plate 51 and the pad wood 33. When installing the plurality of baffle side plates 51 and the baffle top plate 52, the baffle side plates 51 do not contact the pad wood groove 32. Foaming material 6 is filled between the pad wood 33 and the pad wood groove 32 to prevent heat conduction phenomenon caused by the exposure of the pad wood groove 32.

[0052] S500: Pour the 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;

[0053] Refer to Figure 4 , for the convenience of subsequent demolding, before pouring the foaming material 6 into the mold cavity 5 through the pouring port 53, a demolding sheet 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 mounting panel 31, the wooden 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 anti-floating support 3 is greater than or equal to 50 mm.

[0054] S600: Remove the baffle top plate and the multiple side plates after the foaming material is cured;

[0055] Refer to Figure 7 , 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, the sealant 8 is filled at the corner joints of the foaming material 6 and the wooden block 33. Preferably, the support member 211 is removed while removing the baffle top plate 52 and the baffle side plates 51.

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

[0057] 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 insulation layer.

[0058] The above embodiments are only illustrative of the principles and effects of the present invention and are not used 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 middle anti-rolling support on the bottom surface of a type B liquid cargo tank, characterized in that, The method includes the following steps: Install the middle anti-rolling support on the bottom surface of the B-type liquid cargo tank on the side opposite to the hull of the ship. Vertical mounting panels are provided at the left and right ends of the middle anti-rolling support on the bottom surface. The mounting panels are connected to the B-type liquid cargo tank through a plurality of rib plates. Chocks are respectively provided on the outer sides of the two mounting panels, and a chock groove is provided between the mounting panel and the chock; A plurality of bolts are provided on the side of the B-type liquid cargo tank opposite to the hull. A liquid cargo tank chock is provided between each bolt and the B-type liquid cargo tank, and a support pad is provided at the end of the liquid cargo tank chock opposite to the hull; A heat preservation board is provided outside the bolt. A leakage channel is formed between the heat preservation board and the B-type liquid cargo tank. The width of the leakage channel is equal to the sum of the height of the liquid cargo tank chock and the height of the support pad; A mold cavity is provided on the middle anti-rolling support on the bottom surface. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. Pad through holes matching the chocks are provided on the baffle side plates, so that the baffle side plates are sleeved on the chocks. A pouring port is provided 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 chock groove and the rib plates located in the mold cavity; After the foaming material is cured, remove the baffle top plate and the plurality of baffle side plates; A protective layer is provided on the outer surface of the foaming material.

2. The installation method of the intermediate anti-rolling support insulation layer on the bottom surface of the Type B liquid cargo tank according to claim 1, characterized in that, Before a plurality of bolts are provided on the side of the B-type liquid cargo tank opposite to the hull, it includes: Spray an anti-corrosion layer on the side of the B-type liquid cargo tank opposite to the hull.

3. The installation method of the intermediate anti-rolling support insulation layer on the bottom surface of the Type B liquid cargo tank according to claim 1, characterized in that, Providing a heat preservation board outside the bolt includes: A filling through hole is provided 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 intermediate anti-rolling support insulation layer at the bottom of the Type B liquid cargo tank 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 intermediate anti-rolling support insulation layer on the bottom surface of the Type B liquid cargo tank according to claim 1, characterized in that, Providing a mold cavity on the middle anti-rolling support on the bottom surface. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. Pad through holes matching the chocks are provided on the baffle side plates, so that the baffle side plates are sleeved on the chocks. A pouring port is provided on the mold cavity, including: Lay a demoulding sheet on the inner side of the mold cavity.

6. The installation method of the intermediate anti-rolling support insulation layer at the bottom of the B-type liquid cargo tank according to claim 1, characterized in that, Providing a mold cavity on the middle anti-rolling support on the bottom surface. The mold cavity is located on the surface of the heat preservation board. The mold cavity includes a baffle top plate and a plurality of baffle side plates. Pad through holes matching the chocks are provided on the baffle side plates, so that the baffle side plates are sleeved on the chocks. A pouring port is provided on the mold cavity, including: A support is provided between the hull and the baffle top plate.

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

8. The installation method of the intermediate anti-rolling support insulation layer at the bottom of the Type B liquid cargo tank according to claim 1, characterized in that, After the foaming material is cured and the baffle top plate and the plurality of baffle side plates are removed, it further includes: Fill a sealant between the heat preservation board and the cured foaming material.

9. The installation method of the intermediate anti-rolling support insulation layer on the bottom surface of the Type B liquid cargo tank according to claim 1, characterized in that, Providing a protective layer on the outer surface of the foaming material includes: The protective layer is an aluminum foil protective layer, and the thickness of the aluminum foil protective layer ranges from 0.2 mm to 0.4 mm.

10. The installation method of the intermediate anti-rolling support insulation layer on the bottom surface of the Type B liquid cargo tank 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 anti-floating bearing is greater than or equal to 50 mm.

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