CN118323343A - Liquid cargo tank plate-type heat insulation system and ship liquid cargo tank - Google Patents

Abstract

The application provides a cargo tank plate type heat insulation system and a ship cargo tank. The splash-proof barrier layer is laid on the outer surface of the cargo tank, and a protruding structure is arranged on the surface, attached to the cargo tank, of the splash-proof barrier layer. The plate-type heat insulation layer is laid on the outer surface of the splash-proof barrier layer and is formed by splicing a plurality of prefabricated heat insulation plates. The prefabricated heat insulation plate comprises an inner layer plate, an outer layer plate and a reinforcing layer; the inner layer board is laid on the outer surface of the splash-proof barrier layer, the reinforcing layer is laid on the outer surface of the inner layer board, and the outer layer board is laid on the outer surface of the reinforcing layer. The liquid cargo tank plate-type heat insulation system has better heat insulation effect and relatively longer service life.

Description

Liquid cargo tank plate-type heat insulation system and ship liquid cargo tank

Technical Field

The application relates to the field of design of cargo tanks of ships, in particular to a cargo tank plate type heat insulation system and a cargo tank of a ship.

Background

The liquid tight housing on a liquefied gas carrier for loading cryogenic liquid cargo is commonly referred to as a cargo tank and the liquid tight housing on various types of vessels for storing liquefied gas fuel is commonly referred to as a fuel tank. In the present invention, the cargo tank or the fuel tank system is specifically referred to as A, B type independent cargo tank. According to different shapes, A, B type independent cargo tanks can be divided into prismatic tanks, square tanks, special-shaped tanks and the like.

According to the design specifications of the independent cargo tanks, it is necessary to provide them with insulation to prevent the hull temperature from falling below the allowable value and to limit the heat flow into the cargo tanks to a level that can be maintained by the pressure and temperature control system. At the same time, the insulation should provide a splash barrier function and form a leakage path with the cargo tank surface to direct any cryogenic liquid leaking from the cargo tank down into the secondary barrier.

In the independent cargo tank insulation system which is put into practical use at present, for cargo tanks having a cargo temperature lower than-60 ℃, a plate insulation system is generally used to cover the outer surface of the cargo tank. In the prior art, as the temperature of the liquid cargo in the liquid cargo tank is lower, the heat insulation layer in the plate-type heat insulation system is likely to crack, the crack is likely to directly reach the outside from the surface of the splash-proof barrier layer or even the surface of the liquid cargo tank, the crack accelerates the loss of heat, the heat insulation effect is poor, and the safety problem can occur in serious cases.

Disclosure of Invention

The embodiment of the application aims to provide a cargo tank plate type heat insulation system and a ship cargo tank, wherein the cargo tank plate type heat insulation system has a better heat insulation effect and a relatively longer service life.

In a first aspect, a cargo tank plate insulation system is provided for placement on an exterior surface of a cargo tank of a ship, the cargo tank plate insulation system comprising a splash barrier layer and a plate insulation layer.

The splash-proof barrier layer is laid on the outer surface of the cargo tank, and a protruding structure is arranged on the surface, attached to the cargo tank, of the splash-proof barrier layer. The plate-type heat insulation layer is laid on the outer surface of the splash-proof barrier layer and is formed by splicing a plurality of prefabricated heat insulation plates. The prefabricated heat insulation plate comprises an inner layer plate, an outer layer plate and a reinforcing layer; the inner layer board is laid on the outer surface of the splash-proof barrier layer, the reinforcing layer is laid on the outer surface of the inner layer board, and the outer layer board is laid on the outer surface of the reinforcing layer.

In one embodiment, the reinforcement layers of adjacent preformed insulation panels are disposed overlapping at the inner panel seams of adjacent preformed insulation panels.

In one embodiment, the panel insulation further comprises a layer of resilient insulation material disposed in the seams between adjacent inner panels;

the panel thermal insulation layer further comprises a sealing strip arranged in the joint between adjacent outer laminates.

In one embodiment, the prefabricated insulation panel of the panel insulation layer may further comprise an outer protective layer applied to the outer surface of the outer panel.

In one embodiment, the panel insulation further comprises a seam protection layer applied to the seam surface between adjacent outer panels.

In one embodiment, an inner joint liquid-tight layer is provided between the joint between the bottom surface of the sealing strip and the lower inner layer plate.

In one implementation scheme, the splash-proof barrier layer is formed by splicing and bonding a plurality of splash-proof shielding plates, the splash-proof shielding plates comprise splash-proof heat insulation layers and splash-proof liquid-tight layers arranged on the outer surfaces of the splash-proof heat insulation layers, and a plurality of protruding structures are arranged on the inner surfaces of the splash-proof heat insulation layers;

The splash-proof barrier layer also comprises a splash-proof joint liquid-tight layer, and the splash-proof joint liquid-tight layer is laid on the outer surface of the joint seam of two adjacent splash-proof shields.

In one embodiment, the plate-type heat insulating layer comprises a fixing assembly, one end of the fixing assembly is fixed on the outer surface of the cargo tank, and the other end of the fixing assembly is fixed on the outer surface of the reinforcing layer, so that the reinforcing layer, the inner layer plate and the splash-proof barrier layer are sequentially compressed from outside to inside.

In one embodiment, the securing assembly is disposed in a seam of an adjacent inner panel. The fixing component comprises an embedded part, a fixing rod, an elastic bushing, a fixing piece and a fastening piece. The embedded part is preset on the outer surface of the cargo tank and penetrates out of the upper surface of the splash-proof barrier layer; the bottom end of the fixing rod is connected with the embedded part, and the fixing rod extends outwards along the joint between the inner layers. The elastic bushing is sleeved on the outer wall of the fixed rod. The stator covers the outer surface edges of adjacent reinforcing layers at the seams of adjacent inner layers. The fastener passes through the stationary blade and is connected with the dead lever top to compress tightly the stationary blade in the surface of enhancement layer.

In one implementation scheme, the middle of the fixing piece is provided with an embedded part, the embedded part is embedded into a joint of the adjacent inner layer plates and is positioned above the fixing rod, two sides of the top of the embedded part extend outwards for a preset length to form flat plate parts, and the flat plate parts on two sides are respectively pressed on the surface of the reinforcing layer on the upper part of the adjacent inner layer plates;

The edge of the flat plate part is provided with a plurality of tooth-shaped structures facing to one side; when in installation, a plurality of tooth-shaped structures on the fixing sheet are inserted into the reinforcing layer and the inner layer plate;

the side wall of the embedded part is arranged to face the middle concave shape, and the fastener penetrates through the bottom surface of the embedded part to be connected with the top end of the fixed rod, so that the flat plate part is pressed on the outer surface of the reinforcing layer.

According to a second aspect of the application, there is also provided a cargo tank for a ship, comprising a cargo tank plate insulation system according to the above-described aspects, the cargo tank plate insulation system being applied to an outer surface of the cargo tank for the ship.

Compared with the prior art, the application has the beneficial effects that at least:

In the liquid cargo tank plate-type heat insulation system, the inner plate and the outer plate of the prefabricated heat insulation plate of the plate-type heat insulation layer form a secondary heat insulation structure, so that the liquid cargo tank plate-type heat insulation system has a better heat insulation effect and a relatively longer service life. Specifically, because prefabricated heat insulating plate's inner layer board is nearer to the surface of cargo tank, under low temperature liquid cargo influence, the deformation shrinkage degree of inner layer board is big, and the inner layer board can bear the deformation effort that the cargo tank brought owing to low temperature liquid cargo to the maximum extent, and inner layer board fracture risk probably increases simultaneously, but because the enhancement layer separates inner layer board and outer layer board, even the inner layer board fracture also can not extend to the outer layer board, and then under the circumstances that the fracture appears at the inner layer board, still can continue to guarantee the performance of adiabatic effect with the help of the outer layer board. In summary, the scheme of arranging the reinforcing layer between the inner layer plate and the outer layer plate can improve the heat insulation effect of the plate-type heat insulation layer and the low-temperature deformation resistance of the plate-type heat insulation layer, so that the plate-type heat insulation layer has relatively longer service life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a plate insulation of a cargo tank plate insulation system according to an embodiment of the present application;

FIG. 2 is a schematic top view of a plate insulation layer according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of the structure at B-B in FIG. 2;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a schematic view showing a structure of a weather strip and an installation position according to an embodiment of the present application;

FIG. 7 is a schematic exploded view of a stationary assembly according to an embodiment of the present application;

FIG. 8 is a schematic view of a fixing rod of the fixing assembly according to an embodiment of the present application;

FIG. 9 is a schematic view of a stator of a fastening assembly according to an embodiment of the present application;

FIG. 10 is a schematic perspective view of a splash barrier layer according to an embodiment of the present application;

FIG. 11 is a schematic cross-sectional view of a splash barrier layer according to an embodiment of the present application;

fig. 12 is a schematic top view of a splash-proof barrier layer according to an embodiment of the present application.

In the figure: 1. a splash-proof barrier layer; 11. a splash shield; 111. a splash-proof heat insulating layer; 112. a splash-proof liquid-tight layer; 113. a splash-proof joint liquid-tight layer; 101. a bump structure; 102. a leakage path; 2. a plate-type heat insulating layer; 21. prefabricating an insulating plate; 201. an inner layer plate; 202. an outer layer plate; 2021. an inner groove; 203. a reinforcing layer; 204. an outer protective layer; 22. a layer of resilient insulating material; 23. a sealing strip; 231. a convex structure; 24. a seam protection layer; 261. a first low temperature glue layer; 262. inner joint liquid-tight layers; 263. a reinforcing layer laminated layer; 264. a second low temperature glue layer; 265. sealing the filler; 27. a fixing assembly; 271. an embedded part; 272. a fixed rod; 273. an elastic bushing; 274. a fixing piece; 2741. an embedded part; 2742. a flat plate portion; 2743. a tooth-shaped structure; 275. a fastener; 276. an elastic filler; 100. and a cargo tank.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

According to the present embodiment, as shown in fig. 1 to 3, there is first provided a cargo tank plate type heat insulating system for being provided on an outer surface of a ship cargo tank 100, the cargo tank plate type heat insulating system including a splash-proof barrier layer 1 and a plate type heat insulating layer 2.

The splash-proof barrier layer 1 is laid on the outer surface of the cargo tank 100, and a convex structure 101 is provided on the surface of the splash-proof barrier layer 1 attached to the cargo tank 100. The plate-type heat insulating layer 2 is laid on the outer surface of the splash-proof barrier layer 1, and the plate-type heat insulating layer 2 is formed by splicing a plurality of prefabricated heat insulating plates 21. Wherein the prefabricated heat insulation panel 21 includes an inner layer 201, an outer layer 202, and a reinforcing layer 203; the inner layer board 201 is laid on the outer surface of the splash-proof barrier layer 1, the reinforcing layer 203 is laid on the outer surface of the inner layer board 201, and the outer layer board 202 is laid on the outer surface of the reinforcing layer 203.

In this embodiment, the inner and outer laminates 201, 202 are made of a thermally insulating material including, but not limited to, polyurethane foam, polystyrene foam, polyethylene plastic, phenolic foam, and the like. The reinforcing layer 203 is laid between the inner layer 201 and the outer layer 202, and is made of glass fiber mesh cloth, carbon fiber mesh cloth, metal mesh, etc., and the inner layer 201 and the outer layer 202 are bonded by low-temperature glue or resin.

It should be noted that, the prefabricated heat insulation board 21 may be square, rectangular or other polygons, or the prefabricated heat insulation boards 21 with different shapes may be spliced and combined at the same time.

In the cargo tank plate type heat insulation system of the present application, the inner plate 201 and the outer plate 202 of the prefabricated heat insulation plates 21 of the plate type heat insulation layer 2 constitute a secondary heat insulation structure, thereby having a superior heat insulation effect and a relatively longer service life.

Specifically, since the inner layer plate 201 of the prefabricated heat insulation plate 21 is closer to the outer surface of the cargo tank 100, the deformation shrinkage degree of the inner layer plate 201 is large under the influence of the low-temperature cargo, the inner layer plate 201 can bear the deformation acting force of the cargo tank 100 due to the low-temperature cargo to the maximum extent, and at the same time, the cracking risk of the inner layer plate 201 may be increased, but since the reinforcing layer 203 separates the inner layer plate 201 from the outer layer plate 202, the inner layer plate 201 does not extend to the outer layer plate 202 even if cracking occurs, and further, under the condition that the inner layer plate 201 cracks, the exertion of the heat insulation effect can be continuously ensured by means of the outer layer plate 202. In summary, the arrangement of the reinforcing layer 203 between the inner layer 201 and the outer layer 202 can not only improve the heat insulating effect of the plate-type heat insulating layer 2, but also improve the ability of the plate-type heat insulating layer to withstand low-temperature deformation, thereby enabling a relatively longer service life.

In the present embodiment, the thickness of the inner plate 201 is greater than the thickness of the outer plate 202. For example, the thickness of the inner layer plate 201 is set to h11, and the thickness of the outer layer plate 202 is set to h12, preferably, h 11. Gtoreq.1.5×h12.

In the present embodiment, the reinforcing layers 203 of the adjacent prefabricated heat insulation panels 21 are overlapped at the joints of the inner laminate 201 of the adjacent prefabricated heat insulation panels 21 to improve the sealing barrier performance at the joints of the inner laminate 201.

In this embodiment, as shown in fig. 3, the prefabricated heat insulation panel 21 of the panel heat insulation layer 2 may further include an outer protection layer 204 applied to the outer surface of the outer layer panel 202. At the seam of the outer laminate 202 of the adjacent prefabricated heat insulation panel 21 of the panel heat insulation layer 2, the outer protective layer 204 of the adjacent prefabricated heat insulation panel 21 may be overlapped to improve the sealing barrier performance at the seam of the outer laminate 202.

In the present embodiment, as shown in fig. 4 and 5, the plate heat insulating layer 2 may further include an elastic heat insulating material layer 22, and the elastic heat insulating material layer 22 is disposed in the joint between the adjacent inner laminate plates 201. The resilient thermal insulation layer 22 is made of materials including, but not limited to, fibrous thermal insulation, polyethylene plastic foam, diene polymers, nitrile rubber polymers, and the like.

In this embodiment, as shown in fig. 4 and 5, the panel insulation layer 2 may further include a sealing strip 23, the sealing strip 23 being disposed in the joint between adjacent outer laminates 202. The material of the sealing tape 23 includes, but is not limited to, polyethylene plastic foam, diene polymer, nitrile rubber polymer, and the like.

The arrangement of the elastic heat insulating material layer 22 can provide a buffer space for deformation between adjacent inner plates 201 of the plate-type heat insulating layer 2, and reduce the cracking risk of the inner plates 201 caused by thermal expansion and contraction. Meanwhile, the sealing strip 23 can provide buffering and can seal joints.

In the present embodiment, as shown in fig. 5 and 6, the sealing strip 23 is provided with a convex structure 231 on both sides of the bottom, and the bottom edge of the outer layer plate 202 of the prefabricated heat insulation plate 21 is provided with an inner groove 2021; when the sealing strip 23 is disposed in the seam between adjacent outer laminates 202, the male structures 231 snap into the female grooves 2021.

In this embodiment, as shown in fig. 5, between the lower end surface of the sealing tape 23 and the lower joint surface, there may be a first low-temperature glue layer 261, an inner joint liquid-tight layer 262, a reinforcing layer overlapping layer 263 and a second low-temperature glue layer 264 in this order from inside to outside.

The materials of the first low-temperature glue layer 261 and the second low-temperature glue layer 264 may be polyurethane glue, butyl glue, resin glue, etc. The material of the inner joint liquid-tight layer 262 includes metal, composite material, and the like.

Adjacent reinforcing layers 203 overlap the reinforcing layers 203 at the seams of adjacent prefabricated insulation panels 21 to form reinforcing layer overlap layers 263.

Wherein a first layer 261 of low temperature glue is typically applied to the joint surface under the sealing strip 23, then an inner joint liquid-tight layer 262 is provided, and then adjacent reinforcement layers are overlapped to form a reinforcement overlap layer 263. Further, a second low-temperature glue layer 264 is smeared on the bottom surface of the sealing strip 23, then the outer convex structure 231 of the sealing strip 23 is clamped into the inner groove 2021, and the sealing strip 23 and the reinforcing layer laminated layer 263 are contacted and adhered by the second low-temperature glue layer 264. Finally, the sealing filler 265 may be filled in the sidewall gap above the convex structure 231 of the sealing strip 23, and the sealing filler 265 may be made of polyurethane foam. The arrangement of the first low-temperature glue layer 261, the inner joint liquid-tight layer 262, the reinforcement layer overlapping layer 263 and the second low-temperature glue layer 264, and the arrangement of the sealing filler 265 can make the sealing effect of the joint better and the splash-proof barrier performance better.

In this embodiment, as shown in fig. 3 and 5, the panel heat insulating layer 2 further includes a joint protection layer 24, and the joint protection layer 24 is applied on the joint surface between the adjacent outer laminate panels 202 to further enhance the sealing effect at the joint.

In this embodiment, as shown in fig. 2, 3 and 7, the plate heat insulating layer 2 may include a fixing member 27, one end of the fixing member 27 being fixed to the outer surface of the cargo tank 100 and the other end being fixed to the outer surface of the reinforcing layer 203 so that the reinforcing layer 203, the inner layer plate 201 and the splash barrier layer 1 are sequentially compressed from outside to inside. The fixing members 27 are provided in the joints of the adjacent inner laminate 201, and at least three or more fixing members 27 are preferably provided around the peripheral edge joint of one prefabricated heat insulation panel 21.

In this embodiment, as shown in fig. 3 and 7, the fixing assembly 27 may include an embedment 271, a fixing rod 272, an elastic bushing 273, a fixing plate 274, and a fastener 275. The embedded part 271 is preset on the outer surface of the cargo tank 100 and penetrates out of the upper surface of the splash-proof barrier layer 1. The bottom ends of the fixing rods 272 are connected with the embedded parts 271, and the fixing rods 272 extend outwards along the joints between the inner plates 201. The elastic bushing 273 is sleeved on the outer wall of the fixing rod 272. The fixing sheet 274 covers the outer surface edges of the adjacent reinforcing layers 203 provided at the seams of the adjacent inner laminate 201. The fastening member 275 is coupled to the top end of the fixing rod 272 through the fixing plate 274 to press the fixing plate 274 against the outer surface of the reinforcing layer 203.

Wherein, the embedded part 271 can be a welded bolt pre-buried on the surface of the cargo tank 100, the fastening piece 275 can be a bolt standard piece, and two ends of the fixing rod 272 can be provided with internal threaded holes for being respectively in threaded fit with the embedded part 271 and the fastening piece 275. The stationary rod 272 may be made of a material having a relatively low thermal conductivity, including but not limited to wood, plastic, composite materials, etc., to reduce the amount of heat that propagates in the axial direction of the stationary rod 272.

As shown in fig. 7 and 8, the cross section of the predetermined length between the both ends of the fixing rod 272 may be, but not limited to, a cylindrical shape or a cross shape.

The resilient bushing 273 may be made of a material having a relatively low thermal conductivity, including, but not limited to, polyethylene plastic foam, diene polymer, nitrile rubber polymer, and the like. The elastic bushing 273 is sleeved on the fixing rod 272, so that the fixing rod 272 and the inner layer plate 201 can be isolated from direct contact, the influence caused by deformation difference is reduced, the cracking risk is reduced, and the deformation buffering isolation effect is realized.

Further, the fixing sheet 274 may be made of a low temperature resistant material including, but not limited to, metal, plastic, composite material, etc.

As shown in fig. 7 and 9, the middle of the fixing piece 274 may be provided as an embedded portion 2741, and both sides of the top of the embedded portion 2741 extend outwardly by a predetermined length to form a flat plate portion 2742. The embedded portions 2741 are embedded in the joints of the adjacent inner laminate 201 above the fixing bars 272, and the both side flat plate portions 2742 are pressed against the surface of the reinforcing layer 203 at the upper portion of the adjacent inner laminate 201, respectively.

The edge of the flat plate part 2742 is provided with a plurality of tooth-shaped structures 2743 facing to one side; when the fixing plate 274 is installed, the tooth-shaped structures 2743 on the fixing plate 274 are inserted into the reinforcing layer 203 and the inner plate 201, so that the fixing is more stable, and the displacement of the reinforcing layer 203 and the inner plate 201 can be reduced.

As shown in fig. 7 and 9, the sidewall of the embedded portion 2741 may be provided in a concave shape toward the middle, and the fastening member 275 is coupled to the top end of the fixing rod 272 through the bottom surface of the embedded portion 2741 so that the flat plate portion 2742 is pressed against the outer surface of the reinforcing layer 203. The concave shape provides the anchor sheet 274 with a degree of elasticity that provides cushioning to the panel insulation 2 as the tank expands with heat and contracts with cold.

As shown in fig. 3, an elastic filler 276 may be provided inside the embedded portion 2741, thereby improving buffering capacity and fixing effect. The material of the elastomeric filler 276 includes, but is not limited to, polyethylene plastic foam, diene polymer, nitrile rubber polymer, and the like.

In the present embodiment, as shown in fig. 10 and 11, the splash-proof barrier layer 1 may be formed by splicing a plurality of splash-proof shields 11, and the splash-proof shields 11 include a splash-proof heat insulating layer 111 and a splash-proof liquid-tight layer 112 provided on the outer surface of the splash-proof heat insulating layer 111. The inner surface of the splash proof insulating layer 111 is provided with a plurality of convex structures 101, a leakage path 102 is formed between the splash proof barrier layer 1 and the cargo tank 100, and when a low-temperature liquid in the cargo tank 100 leaks, the liquid can flow downward through the leakage path 102.

In the present embodiment, as shown in fig. 11 and 12, the splash-proof barrier layer 1 may further include a splash-proof joint liquid-tight layer 113, and the splash-proof joint liquid-tight layer 113 may be adhered to the outer surfaces of the splice joints of the adjacent two splash-proof barrier plates 11 by low-temperature glue.

In addition, the splash shields 11 are generally bonded by low-temperature glue, so that a low-temperature glue layer is formed in the splice joint of the adjacent splash shields 11.

The main body of the splash-proof shielding plate 11 is a splash-proof heat insulation layer 111, and the manufacturing materials of the splash-proof heat insulation layer include, but are not limited to, polyurethane foam, polystyrene foam, polyethylene plastic, phenolic foam and the like. The material of the splashproof liquid-tight layer 112 is generally a metal material, a composite material, or the like having excellent liquid-tight performance, so as to achieve a further sealing effect. The material of which the splash-proof joint liquid-tight layer 113 is made includes, but is not limited to, glass fiber aluminum foil cloth, carbon fiber aluminum foil cloth, composite material, and the like.

The present embodiment also provides a cargo tank for a ship, including the cargo tank plate-type heat insulation system in the foregoing aspect, where the cargo tank plate-type heat insulation system is laid on an outer surface of the cargo tank 100 for a ship.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (11)

1. A cargo tank plate insulation system for arrangement on an outer surface of a ship cargo tank (100), characterized in that the cargo tank plate insulation system comprises:

A splash-proof barrier layer (1) laid on the outer surface of the cargo tank (100), wherein a convex structure (101) is arranged on one surface of the splash-proof barrier layer (1) attached to the cargo tank (100);

The plate-type heat insulation layer (2) is laid on the outer surface of the splash-proof barrier layer (1), and the plate-type heat insulation layer (2) is formed by splicing a plurality of prefabricated heat insulation plates (21);

Wherein the prefabricated heat insulation board (21) comprises an inner layer board (201), an outer layer board (202) and a reinforcing layer (203); the inner layer plate (201) is laid on the outer surface of the splash-proof barrier layer (1), the reinforcing layer (203) is laid on the outer surface of the inner layer plate (201), and the outer layer plate (202) is laid on the outer surface of the reinforcing layer (203).

2. Cargo tank plate insulation system according to claim 1, characterized in that the reinforcement layers (203) of adjacent pre-insulated panels (21) are arranged overlapping at the joints of the inner plates (201) of adjacent pre-insulated panels (21).

3. Cargo tank plate insulation system according to claim 1, characterized in that the plate insulation layer (2) further comprises a layer of resilient insulation material (22), which layer of resilient insulation material (22) is arranged in the joint between adjacent inner plates (201);

the plate heat insulating layer (2) further comprises a sealing strip (23), the sealing strip (23) being arranged in the joint between adjacent outer plates (202).

4. Cargo tank plate insulation system according to claim 1, characterized in that the prefabricated insulation panels (21) of the plate insulation (2) may further comprise an outer protective layer (204) applied to the outer surface of the outer deck (202).

5. Cargo tank plate insulation system according to claim 4, characterized in that the plate insulation layer (2) further comprises a joint protection layer (24), which joint protection layer (24) is applied to the joint surface between adjacent outer deck (202).

6. A cargo tank plate heat insulation system according to claim 3, characterized in that an inner joint liquid-tight layer (262) is provided between the joint between the bottom surface of the sealing strip (23) and the lower inner laminate (201).

7. The cargo tank plate type heat insulation system according to claim 1, wherein the splash-proof barrier layer (1) is formed by splicing and bonding a plurality of splash-proof barrier plates (11), the splash-proof barrier plates (11) comprise splash-proof heat insulation layers (111) and splash-proof liquid-tight layers (112) arranged on the outer surfaces of the splash-proof heat insulation layers (111), and a plurality of protruding structures (101) are arranged on the inner surfaces of the splash-proof heat insulation layers (111);

The splash-proof barrier layer (1) further comprises splash-proof seam liquid-tight layers (113), and the splash-proof seam liquid-tight layers (113) are laid on the outer surfaces of the joints of two adjacent splash-proof shielding plates (11).

8. Cargo tank plate heat insulation system according to any of claims 1-7, characterized in that the plate heat insulation layer (2) comprises a fixing assembly (27), one end of the fixing assembly (27) being fixed to the outer surface of the cargo tank (100) and the other end being fixed to the outer surface of the reinforcement layer (203) such that the reinforcement layer (203), the inner layer plate (201) and the splash barrier layer (1) are compressed in sequence from outside to inside.

9. Cargo tank plate insulation system according to claim 8, characterized in that the securing assembly (27) is arranged in a seam adjacent the inner deck (201);

The fixing assembly (27) comprises an embedded part (271), a fixing rod (272), an elastic bushing (273), a fixing piece (274) and a fastening piece (275);

the embedded part (271) is preset on the outer surface of the liquid cargo tank (100) and penetrates out of the upper surface of the splash-proof barrier layer (1);

The bottom end of the fixing rod (272) is connected with the embedded part (271), and the fixing rod (272) extends outwards along a seam between the inner laminates (201);

the elastic bushing (273) is sleeved on the outer wall of the fixed rod (272);

the fixing sheet (274) is arranged on the outer surface edge of the adjacent reinforcing layer (203) at the joint of the adjacent inner layer plate (201) in a covering manner;

The fastening piece (275) penetrates through the fixing piece (274) and is connected with the top end of the fixing rod (272) so as to press the fixing piece (274) on the outer surface of the reinforcing layer (203).

10. The cargo tank plate heat insulation system according to claim 9, wherein the fixing piece (274) is provided with an embedded portion (2741) in the middle, the embedded portion (2741) is embedded in the joint of the adjacent inner plate (201) and is located above the fixing rod (272), the two sides of the top of the embedded portion (2741) extend outwards for a predetermined length to form a flat plate portion (2742), and the flat plate portions (2742) on the two sides are respectively pressed on the surface of the reinforcing layer (203) adjacent to the upper portion of the inner plate (201);

The edge of the flat plate part (2742) is provided with a plurality of tooth-shaped structures (2743) facing to one side; when the tooth-shaped structures (2743) on the fixing piece (274) are inserted into the reinforcing layer (203) and the inner layer plate (201) during installation;

The side wall of the embedded part (2741) is arranged to be concave towards the middle, and the fastener (275) penetrates through the bottom surface of the embedded part (2741) to be connected with the top end of the fixing rod (272), so that the flat plate part (2742) is pressed on the outer surface of the reinforcing layer (203).

11. Cargo tank for a ship, characterized by comprising a cargo tank plate insulation system according to any of claims 1-10, which is laid on the outer surface of the cargo tank (100) for the ship.