Independent liquid tank insulation system of type B and ship

Abstract

The application provides a B-type independent liquid tank heat insulation system and a ship, which comprises a liquid-tight base plate, a heat insulation layer, an anchoring assembly, a discharge assembly and a cofferdam plate. The anchoring assembly comprises an anchoring body, a plurality of screw rods and a heat-insulating connecting block. The anchoring body comprises a fixed end fixed to a liquid tank outer plate and a connecting end arranged on the liquid-tight base plate. One end of the screw rod is connected to the connecting end of the anchoring body, and the other end is connected to the heat insulation layer. The discharge assembly comprises a discharge pipe, a drip tray and the cofferdam plate. One end of the discharge pipe is fixedly connected to the liquid tank, and the other end extends to a predetermined discharge position. The drip tray is arranged around the discharge pipe, and the inner edge of the drip tray is sealingly connected to the outer wall of the discharge pipe. The cofferdam plate is arranged on the drip tray, and the bottom of the cofferdam plate is sealingly connected to the drip tray. The liquid-tight base plate, the cofferdam plate and the drip tray surround a drip cavity, the drip cavity is in communication with a leakage groove, and the discharge pipe is provided with a discharge hole. The application realizes good heat insulation function, and when liquid leakage occurs, the liquid is discharged to a designated place, thereby ensuring the safety of the ship structure.

Description

Technical Field

[0001] This application relates to the field of ship design technology, and more specifically, to a Type B independent liquid tank insulation system and a ship. Background Technology

[0002] The liquid-tight hull used by liquefied gas carriers to load cryogenic liquid cargo is called a cargo tank, or simply a tank. Tanks come in two types: membrane-type and freestanding. Freestanding tanks include Type A, Type B, and Type C. Type B freestanding tanks have long been used for transporting liquefied natural gas due to their large space, low daily LNG evaporation, and ease of installation and maintenance. According to the design specifications for Type B freestanding tanks, insulation is required to prevent the hull temperature from dropping below permissible levels and to limit the heat flow into the tank to levels maintained by the pressure and temperature control systems. However, Type B freestanding tanks are a unique structural type, and their insulation system differs from the relatively mature membrane-type tanks.

[0003] Currently, the insulation systems for Type B independent liquid tanks include spray-applied insulation systems and panel insulation systems. Spray-applied insulation systems involve spraying a polyurethane foam layer onto the outer surface of the tank's outer plating, while panel insulation systems involve installing prefabricated insulation panels on the outer surface of the tank's outer plating. Regardless of the type of insulation system, if it is not securely fixed, the insulation layer may detach from the tank or delaminate, causing cracks and rendering the splash barrier function ineffective. The cryogenic liquid leaking from the tank will then directly splash onto the ship's structure, causing serious maritime safety incidents. Summary of the Invention

[0004] The purpose of this application is to provide a Type B independent liquid tank insulation system and a ship, which solves the technical problem that the existing insulation system is not securely fixed and that once the insulation layer cracks, the leaked low-temperature liquid will directly splash onto the hull structure, causing serious ship safety accidents.

[0005] Firstly, a type B independent liquid tank insulation system is provided, comprising:

[0006] A liquid-tight substrate is disposed on the outer surface of the outer plate of the liquid tank, and a leakage groove is formed on the liquid-tight substrate near the outer plate of the liquid tank.

[0007] A heat insulation layer is disposed on the outer surface of the liquid-tight substrate;

[0008] An anchoring assembly is fixed at a predetermined position on the outer surface of the outer plate of the liquid tank. The anchoring assembly includes an anchoring body, multiple screws, and a heat-resistant connecting block. The anchoring body includes a fixed end fixed to the outer surface of the outer plate of the liquid tank and a connecting end arranged on the liquid-tight substrate. The multiple screws are connected end to end by the heat-resistant connecting block to form a long screw. One end of the long screw is connected to the connecting end of the anchoring body, and the other end is fixedly connected to the heat insulation layer.

[0009] The venting kit includes a venting pipe, a drip tray, and a containment plate. One end of the venting pipe is fixedly positioned at a predetermined location on the outer surface of the outer plate of the liquid tank, and the other end extends to a predetermined discharge location. The drip tray surrounds the venting pipe, and its inner edge is sealed to the outer wall of the venting pipe. The containment plate is positioned on the drip tray, with its top sealed to the liquid-tight base plate and its bottom sealed to the drip tray. The liquid-tight base plate, the containment plate, and the drip tray together form a drip cavity that communicates with the leakage groove. The venting pipe, located within the drip cavity, has a venting hole near the drip tray.

[0010] In one embodiment, both the fixed end and the connecting end of the anchoring body are provided with internal and external threaded nuts, a stud is fixed at a predetermined position on the outer surface of the outer plate of the liquid tank, the fixed end of the anchoring body is connected to the stud through internal and external threaded nuts, and one end of the long screw is connected to the internal and external threaded nuts of the connecting end.

[0011] In one embodiment, the length of each screw is less than or equal to 50 mm, and internal and external threaded nuts are pre-embedded at both ends of the heat-resistant connecting block. The screw is connected to the heat-resistant connecting block through the internal and external threaded nuts.

[0012] In one embodiment, the venting kit further includes a base and fasteners. The base includes a base plate and a bushing. The base plate is fixed to the outer surface of the outer plate of the tank. The bushing is fixed to the surface of the base plate. The venting pipe is inserted into the bushing of the base. The bushing has an opening. The fasteners pass through the opening to fix the venting pipe to the base plate.

[0013] In one embodiment, the insulation layer includes an inner insulation layer, an outer insulation layer, and a grid reinforcement layer. The inner insulation layer is disposed on the outer surface of the liquid-tight substrate, the grid reinforcement layer covers the outer surface of the inner insulation layer, the outer insulation layer is laid on the outer surface of the grid reinforcement layer, and the other end of the long screw is fixedly connected to the inner insulation layer and the grid reinforcement layer.

[0014] In one embodiment, the other end of the long screw is connected to the mesh reinforcement layer via a connecting assembly, which includes a washer, a plurality of U-shaped pins, and a nut. The other end of the long screw extends through the inner insulation layer and the mesh reinforcement layer. The washer has a central hole and a plurality of symmetrically arranged fixing holes. The central hole is arranged through the protruding portion of the other end of the long screw. The U-shaped pins pass through the fixing holes and are inserted into the inner insulation layer and the mesh reinforcement layer for fixation. The nut is placed on the washer and fixedly connected to the long screw.

[0015] In one embodiment, the drip tray has a planar structure, and fiberglass aluminum foil is pasted on the inner side of the dike plate. The dike plate, the liquid-tight substrate, and the drip tray are sealed and pasted together with low-temperature adhesive.

[0016] In one embodiment, the heat-resistant connecting block is olive-shaped or spherical.

[0017] In one embodiment, the distance between the outer surface of the insulation layer and the outer surface of the liquid tank outer plate is greater than or equal to 30 mm.

[0018] In one embodiment, an outer protective layer is further included, which is applied to the outer surface of the insulation layer.

[0019] In one embodiment, the cross-section of the anchoring body is T-shaped, and the anchoring body includes two coaxially connected cylindrical structures, with the internal and external threaded nuts respectively embedded in the two cylindrical structures.

[0020] In one embodiment, a metal layer is bonded to the outer surface of the liquid-tight substrate, adhesive is applied between the edge interfaces of the liquid-tight substrate, and fiberglass aluminum foil is adhered to the seams of the liquid-tight substrate.

[0021] In one embodiment, the edge interface of the liquid-tight substrate is shaped like a tongue and tenon joint.

[0022] According to a second aspect of this application, a ship is also provided, which has a liquid tank inside, and the outer surface of the outer plate of the liquid tank is provided with a Type B independent liquid tank insulation system as described in any one of the first aspects.

[0023] In one embodiment, the liquid tank is polygonal in shape, and the outer surface of the outer plate of the liquid tank includes a top region, multiple side regions, and a bottom region. The anchoring assembly is distributed in the top region and multiple side regions, and the anchoring assembly and the venting kit are arranged intersectingly in the bottom region.

[0024] In one embodiment, the liquid tank is spherical in shape, with the anchoring assembly and the venting kit arranged intersectingly in the area directly below the center of the sphere, and the anchoring assembly arranged in other areas of the liquid tank.

[0025] The Type B independent liquid tank insulation system in this application has the following beneficial effects:

[0026] By rationally designing the anchoring components and venting kits within the insulation system, a robust connection is established between the insulation system and the cargo tank, thereby achieving excellent insulation performance. This effectively prevents the liquefied gas carrier's hull temperature from dropping below permissible levels and limits the heat flow entering the cargo tank to levels maintained by the pressure and temperature control systems used in liquefied gas carriers. Furthermore, in the event of a cargo tank leak, the liquid can be guided smoothly through the venting kits to a designated location, preventing direct contact between the cryogenic cargo and the hull structure, thus ensuring the safety of the hull structure. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a type B independent liquid tank insulation system according to an embodiment of this application;

[0029] Figure 2 This is a schematic diagram illustrating the structure of an anchoring component according to an embodiment of this application;

[0030] Figure 3 This is a schematic diagram illustrating the structure of a venting kit according to an embodiment of this application;

[0031] Figure 4 for Figure 2 The D-direction view;

[0032] Figure 5 This is a layout diagram of an anchoring component and a liquid-tight substrate according to an embodiment of this application;

[0033] Figure 6 for Figure 5 A cross-sectional view along the CC direction;

[0034] Figure 7 This is a schematic diagram of the edge interface of a liquid-tight substrate according to an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the structure of a ship according to an embodiment of this application. Figure 1 ;

[0036] Figure 9This is a schematic diagram of the structure of a ship according to an embodiment of this application. Figure 2 ;

[0037] Figure 10 This is a layout diagram of an anchoring assembly within a ship according to an embodiment of this application;

[0038] Figure 11 This is a schematic diagram of the structure of a leakage groove according to an embodiment of this application. Figure 1 ;

[0039] Figure 12 This is a schematic diagram of the structure of a leakage groove according to an embodiment of this application. Figure 2 .

[0040] 100. Liquid tank outer plate; 110. Stud; 121. Top area; 122. Side area; 123. Bottom area; 124. Area directly below the center of the sphere; 125. Other areas of the center of the sphere; 200. Liquid-tight substrate; 210. Leakage groove; 220. Edge interface; 230. Metal layer; 300. Insulation layer; 310. Inner insulation layer; 320. Outer insulation layer; 400. Anchoring assembly; 410. Anchoring body; 411. Fixing end; 412. Connecting end; 413. Internal and external threads. Nut; 420, Screw; 430, Heat-resistant connecting block; 440, Connecting assembly; 441, Washer; 442, U-shaped nail; 443, Nut; 500, Drain kit; 510, Drain pipe; 511, Drain hole; 520, Drip tray; 530, Dike plate; 531, Fiberglass aluminum foil; 532, Adhesive; 540, Base; 541, Base plate; 542, Bushing; 550, Fastener; 560, Drip chamber; 600, Mesh reinforcement layer; 700, Outer protective layer. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] Firstly, this application provides a Type B independent liquid tank insulation system. Figure 1This is a schematic diagram illustrating the structure of a type B independent liquid tank insulation system according to an embodiment of this application. See also... Figure 1 It includes a liquid-tight substrate 200, a heat insulation layer 300, an anchoring assembly 400, and a venting kit 500.

[0044] A liquid-tight substrate 200 is disposed on the outer surface of the liquid tank outer plate 100. The liquid-tight substrate is made of an insulating material, including but not limited to polyurethane foam, polystyrene foam, polyethylene plastic, phenolic foam, etc. A leakage groove 210 is formed on the inner surface of the liquid-tight substrate 200 near the liquid tank outer plate. See [reference needed] for different processing techniques and design requirements. Figures 11-12 The leakage groove can be trapezoidal or square in shape. A trapezoidal shape is preferred because it satisfies the processing requirements of the integrated foaming process for liquid-tight substrates. This is because the trapezoidal cross-section facilitates demolding after pre-foaming, reducing the risk of material breakage and damage during demolding and improving yield. Simultaneously, the trapezoidal shape reduces stress concentration at the corners of the leakage groove, thereby lowering the risk of cracking. Furthermore, the relatively wide opening shape helps avoid contact between the weld seam of the liquid-tight substrate and the liquid tank.

[0045] The heat insulation layer 300 is disposed on the outer surface of the liquid-tight substrate 200.

[0046] See Figure 1 and Figure 2 The anchoring assembly 400 is fixed at a predetermined position on the outer surface of the tank's outer plate, see [reference]. Figure 5 The anchoring assembly 400 is fixed to the joint of the insulation layer 300. The anchoring assembly 400 includes an anchoring body 410, multiple screws 420, and a heat-resistant connecting block 430. It is worth noting that the screws are made of metal. The anchoring body 410 includes a fixing end 411 fixed to the outer surface of the liquid tank outer plate and a connecting end 412 arranged on the liquid-tight base plate 200. The multiple screws 420 are connected end-to-end by the heat-resistant connecting block 430 to form a long screw. One end of the long screw is connected to the connecting end of the anchoring body 410, and the other end is fixedly connected to the insulation layer 300. The anchoring body 410 is made of a material with low thermal conductivity, including but not limited to wood and Teflon plastic, which can reduce heat transmission along the axial direction of the anchoring component and help the insulation system maintain good insulation characteristics.

[0047] See Figure 1 and Figure 3The venting kit 500 includes a venting pipe 510, a drip tray 520, and a containment plate 530. One end of the venting pipe 510 is fixedly positioned at a predetermined location on the outer surface of the outer plate of the liquid tank, and the other end extends to a predetermined discharge location. The drip tray 520 is arranged around the venting pipe 510, and its inner edge is sealed to the outer wall of the venting pipe 510. The containment plate 530 is located at the outer edge of the drip tray 520, and its top is sealed to the liquid-tight base plate 200. Its bottom is sealed to the drip tray 520. The liquid-tight base plate 200, the containment plate 530, and the drip tray 520 enclose a dripping cavity 560, which communicates with the leakage groove 210. The venting pipe 510 located in the dripping cavity 560 has a venting hole 511 near the drip tray 520. The vent hole is elliptical in shape, designed to allow for maximum discharge of liquid cargo even during ship rolling. In one embodiment, a drip tray is welded to the middle section of the vent pipe to receive liquid cargo flowing from the leaking groove of the liquid-tight substrate, preventing direct contact and penetration of the liquid cargo into the insulation layer. The dike plate can be made of insulation material, including but not limited to polyurethane foam, polystyrene foam, polyethylene plastic, phenolic foam, etc. Fiberglass aluminum foil 531 is adhered to the inner side of the dike plate to provide a liquid-tight seal, and is bonded between the liquid-tight substrate 200 and the drip tray 520 with low-temperature adhesive 532. A vent hole 511 is located between the base 540 and the drip tray 520, forming a leakage channel together with the liquid-tight substrate and the leaking groove, guiding the low-temperature liquid leaking from the cargo tank into the vent pipe and discharging it to a designated external location.

[0048] In the aforementioned implementation process, through reasonable design, excellent thermal insulation is achieved, effectively preventing the liquefied gas carrier's hull temperature from dropping below permissible levels and limiting the heat flow entering the cargo tanks to levels maintained by the pressure and temperature control systems used in liquefied gas carriers. Simultaneously, in the event of cargo leakage from the cargo tanks, the cryogenic liquid can be guided smoothly to a designated location, preventing direct contact between the cryogenic liquid and the hull structure, thereby ensuring the safety of the hull structure. Furthermore, the insulation system of the Type B independent compartment disclosed in this application is low in cost.

[0049] In this embodiment, see Figure 2Both the fixed end 411 and the connecting end 412 of the anchoring body are equipped with internal and external threaded nuts 413. Studs 110 are fixed at predetermined positions on the outer surface of the liquid tank outer plate. The material of the studs 110 matches the welding characteristics of the liquid tank outer plate material. The fixed end 411 of the anchoring body 410 is connected to the studs 110 via internal and external threaded nuts 413, and one end of the long screw is connected to the internal and external threaded nuts 413 of the connecting end 412. The connection method using screws and internal and external threaded nuts increases the connection strength and reliably fixes the insulation layer. Internal and external threaded nuts are pre-embedded at both ends of the heat-resistant connecting block 430, providing high strength, durability, and greatly improving the reliability of threaded fastening. Each screw 420 has a length of less than or equal to 50mm. Internal and external threaded nuts 413 are also pre-embedded at both ends of the heat-resistant connecting block 430, and the screw 420 is connected to the heat-resistant connecting block 430 via internal and external threaded nuts 413. Furthermore, the heat-resistant connecting block 19 has an olive-shaped or spherical shape to increase its own strength. In this application, due to the use of screw connections, the heat transfer performance of the screws needs to be considered. Therefore, when the connection length exceeds 100mm, a heat-resistant connecting block 430 is added to connect the two screws 420. After the length exceeds 100mm, a heat-resistant connecting block 430 is added for every 50mm increase. The heat-resistant connecting block 430 is made of a material with low thermal conductivity, including but not limited to wood and Teflon plastic, thereby reducing heat transmission along the axial direction of the anchoring assembly and helping the insulation system maintain good insulation characteristics.

[0050] See Figure 3 The venting kit 500 also includes a base 540 and fasteners 550. The base 540 includes a base plate 541 and a bushing 542. The base plate 541 is fixed to the outer surface of the outer plate of the liquid tank, and the bushing 542 is fixed to the surface of the base plate 541. The venting pipe 510 is inserted into the bushing 542 of the base 540. The bushing 542 has an opening, and the fasteners 550 pass through the opening to fix the venting pipe 510 to the base plate 541. The bushing is pre-welded to the base plate, and the base is welded to the outer surface of the bottom outer plate of the liquid cargo tank. The reason for setting the base plate is that if the installation position is incorrect or other technical problems occur, the bushing can be cut off from the base plate and repositioned and welded to the base plate without damaging the outer steel plate of the liquid cargo tank, which is especially important for cryogenic liquid cargo tanks.

[0051] In one embodiment, the insulation layer 300 includes an inner insulation layer 310, an outer insulation layer 320, and a grid reinforcement layer 600. The inner insulation layer 310 is disposed on the outer surface of the liquid-tight substrate 200, the grid reinforcement layer 600 covers the outer surface of the inner insulation layer 310, and the outer insulation layer 320 is laid on the outer surface of the grid reinforcement layer 600. The other end of a long screw is fixedly connected to the inner insulation layer 310 and the grid reinforcement layer 600. Specifically, a grid reinforcement layer 600 is covered on the surface of the formed inner insulation layer 310. The grid reinforcement layer 600 is composed of one or more grid materials, including fiberglass mesh, carbon fiber mesh, metal mesh, etc. Its function is to improve the strength of the insulation layer and effectively reduce the risk of damage to the insulation layer when it is affected by its own deformation, liquid cargo tank deformation, ship sway, etc.

[0052] Specifically, in this embodiment, the inner insulation layer 310 has excellent thermal insulation properties, effectively preventing the liquefied gas carrier's hull temperature from dropping below permissible levels and limiting the heat flow entering the cargo tank to levels maintained by the pressure and temperature control systems used in liquefied gas carriers. The inner insulation layer 310 is made of polyurethane foam and is applied to the surfaces of the liquid-tight substrate 200 and the venting kit 500 by direct spraying and foaming or by adhesive bonding. The outer insulation layer 320 is also made of polyurethane foam and is applied to the surfaces of the inner insulation layer 310 and the mesh reinforcement layer 600 by direct spraying and foaming or by adhesive bonding. In this invention, the distance between the outer surface of the insulation layer 300 and the outer surface of the cargo tank outer plate is greater than or equal to 30 mm, which is the total thickness of the insulation layer.

[0053] In one embodiment, the other end of the long screw is connected to the mesh reinforcement layer 600 via a connecting assembly 440, which includes a washer 441, a plurality of U-shaped pins 442, and a nut 443. The other end of the long screw extends through the inner insulation layer 310 and the mesh reinforcement layer 600. The washer 441 has a central hole and a plurality of symmetrically arranged fixing holes. The central hole is arranged through the protruding portion of the other end of the long screw. The U-shaped pins 442 pass through the fixing holes and are inserted into the inner insulation layer 310 and the mesh reinforcement layer 600 for fixation. The nut 443 is placed on the washer 441 and fixedly connected to the long screw. The stud 110, anchor body 410, heat-insulating connecting block 430, washer 441, and nut 443 are connected and fixed together, providing an additional tightening force in the thickness direction of the insulation layer, thereby helping to improve the bonding strength and stability between the liquid-tight substrate 200, the inner insulation layer 310, and the outer insulation layer 320. Gasket 441 is made of low-temperature resistant materials, including but not limited to Teflon plastics and metal materials. The gasket is designed with reinforcing ribs to improve its strength and prevent deformation.

[0054] In one embodiment, the drip tray 520 has a planar structure with unrolled edges to leave sufficient installation space for tightening fasteners. Fiberglass aluminum foil 531 is adhered to the inner side of the dike plate 530, and the dike plate 530 is sealed to the liquid-tight substrate 200 and the drip tray 520 with adhesive 532.

[0055] In one embodiment, the heat-resistant connector 430 is olive-shaped or spherical.

[0056] In one embodiment, an outer protective layer 700 is further included, which is applied to the outer surface of the insulation layer 300. Specifically, the outer protective layer 700 is applied to the surface of the outer insulation layer 320 by spraying or pasting, and is made of a material with appropriate strength, including polymers, fiberglass, metals, etc., and its function is to provide good mechanical protection and anti-aging protection for the insulation layer.

[0057] In one embodiment, the anchoring body 410 has a T-shaped cross-section and includes two coaxially connected cylindrical structures, with internal and external threaded nuts 413 respectively embedded in the two cylindrical structures. The T-shaped cross-section can fully compress and compact the liquid-tight substrate 200.

[0058] join Figure 6 A metal layer 230 is bonded to the outer surface of the liquid-tight substrate 200. This metal layer can be a metal foil or a metal sheet, forming a liquid-tight barrier on the surface of the liquid-tight substrate 200, effectively limiting the penetration of leaked liquid along the insulation thickness direction. Simultaneously, in low-temperature or cryogenic environments, or when leaked liquid splashes onto its surface, the metal layer can increase the surface strength of the liquid-tight substrate, effectively preventing cracking. Adhesive is applied between the edge interfaces 220 of the liquid-tight substrate 200, and fiberglass aluminum foil 531 is adhered to the seams of the liquid-tight substrate to further strengthen the connection with the liquid-tight substrate. When the edge interface seal fails, the fiberglass aluminum foil layer can act as a liquid-tight barrier. The edge interfaces 220 of the liquid-tight substrate 200 are tongue-and-groove shaped (see...). Figure 6 and Figure 7 -(a)) can improve the stability of the connection and avoid connection failures such as detachment and delamination. The shape of the edge interface 220 can also be other shapes, such as vertical (see Figure 7 -(b)), S-shaped (see Figure 7 -(c)) and oblique type (see Figure 7 -(d)).

[0059] Secondly, this application also provides a ship having a liquid tank inside, and the outer surface of the liquid tank's outer plate having a Type B independent liquid tank insulation system as described in any one of the first aspects.

[0060] See Figure 8 The liquid tank is polygonal in shape, and the outer surface of the outer plate of the liquid tank includes a top region 121, multiple side regions 122, and a bottom region 123. Anchoring components 400 are distributed at a first preset distance between the top region 121 and the multiple side regions 122 (see...). Figure 10 Anchoring assembly 400 and venting kit 500 are arranged in a cross configuration in bottom area 123 (see below). Figure 1 ).

[0061] See Figure 9 The liquid tank is spherical in shape, with the anchoring assembly 400 and the venting kit 500 arranged intersectingly in the area 124 directly below the center of the sphere (see [reference]). Figure 10 Anchoring components 400 are arranged at second preset distances in other areas 125 of the sphere's center (see...). Figure 1 ).

[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A type B independent liquid tank insulation system, characterized in that, include: A liquid-tight substrate is disposed on the outer surface of the outer plate of the liquid tank, and a leakage groove is formed on the surface of the liquid-tight substrate near the outer plate of the liquid tank. A heat insulation layer is disposed on the outer surface of the liquid-tight substrate; An anchoring assembly is fixed at a predetermined position on the outer surface of the outer plate of the liquid tank. The anchoring assembly includes an anchoring body, multiple screws, and a heat-resistant connecting block. The anchoring body includes a fixed end fixed to the outer surface of the outer plate of the liquid tank and a connecting end arranged on the liquid-tight substrate. The multiple screws are connected end to end by the heat-resistant connecting block to form a long screw. One end of the long screw is connected to the connecting end of the anchoring body, and the other end is fixedly connected to the heat insulation layer. A discharge kit includes a discharge pipe, a drip tray, and a containing plate. One end of the discharge pipe is fixedly positioned at a predetermined location on the outer surface of the outer plate of the liquid tank, and the other end extends to a predetermined discharge location. The drip tray surrounds the discharge pipe, and its inner edge is sealed to the outer wall of the discharge pipe. The containing plate is disposed on the drip tray, with its top sealed to the liquid-tight base plate and its bottom sealed to the drip tray. The liquid-tight base plate, the containing plate, and the drip tray are connected in a sealed manner. A drip chamber is formed around the drip plate and communicates with the leakage tank. The discharge pipe located in the drip chamber has a discharge hole near the drip plate. The discharge kit also includes a base and fasteners. The base includes a base plate and a bushing. The base plate is fixed to the outer surface of the outer plate of the liquid tank, and the bushing is fixed to the surface of the base plate. The discharge pipe is inserted into the bushing of the base. The bushing has an opening, and the fastener passes through the opening to fix the discharge pipe to the base plate.

2. The Type B independent liquid tank insulation system according to claim 1, characterized in that, Both the fixed end and the connecting end of the anchoring body are provided with internal and external threaded nuts. A stud is fixed at a predetermined position on the outer surface of the outer plate of the liquid tank. The fixed end of the anchoring body is connected to the stud through the internal and external threaded nuts. One end of the long screw is connected to the internal and external threaded nuts of the connecting end.

3. The Type B independent liquid tank insulation system according to claim 1, characterized in that, The length of each screw is less than or equal to 50mm. Both ends of the heat-resistant connecting block are pre-embedded with internal and external thread nuts. The screw is connected to the heat-resistant connecting block through the internal and external thread nuts.

4. The Type B independent liquid tank insulation system according to claim 1, characterized in that, The insulation layer includes an inner insulation layer, an outer insulation layer, and a grid reinforcement layer. The inner insulation layer is disposed on the outer surface of the liquid-tight substrate. The grid reinforcement layer covers the outer surface of the inner insulation layer. The outer insulation layer is laid on the outer surface of the grid reinforcement layer. The other end of the long screw is fixedly connected to the inner insulation layer and the grid reinforcement layer.

5. The Type B independent liquid tank insulation system according to claim 4, characterized in that, The other end of the long screw is connected to the mesh reinforcement layer via a connecting assembly, which includes a washer, multiple U-shaped pins, and a nut. The other end of the long screw extends through the inner insulation layer and the mesh reinforcement layer. The washer has a central hole and multiple symmetrically arranged fixing holes. The central hole is arranged through the protruding portion of the other end of the long screw. The U-shaped pins pass through the fixing holes and are inserted into the inner insulation layer and the mesh reinforcement layer for fixation. The nut is placed on the washer and fixedly connected to the long screw.

6. The Type B independent liquid tank insulation system according to claim 1, characterized in that, The drip tray has a planar structure, and fiberglass aluminum foil is pasted on the inner side of the dike plate. The dike plate, the liquid-tight substrate, and the drip tray are sealed and pasted together with low-temperature adhesive.

7. The Type B independent liquid tank insulation system according to claim 1 or 3, characterized in that, The heat-resistant connecting block is olive-shaped or spherical.

8. The Type B independent liquid tank insulation system according to claim 1, characterized in that, The distance between the outer surface of the insulation layer and the outer surface of the liquid tank outer plate is greater than or equal to 30 mm.

9. The Type B independent liquid tank insulation system according to claim 1, characterized in that, It also includes an outer protective layer, which is laid on the outer surface of the insulation layer.

10. The Type B independent liquid tank insulation system according to claim 2, characterized in that, The anchoring body has a T-shaped cross-section and includes two coaxially connected cylindrical structures. The internal and external threaded nuts are respectively embedded in the two cylindrical structures.

11. The Type B independent liquid tank insulation system according to claim 1, characterized in that, A metal layer is bonded to the outer surface of the liquid-tight substrate, adhesive is applied between the edge interfaces of the liquid-tight substrate, and fiberglass aluminum foil is pasted on the seams of the liquid-tight substrate.

12. The Type B independent liquid tank insulation system according to claim 1, characterized in that, The edge interface of the liquid-tight substrate is shaped like a tongue and tenon.

13. A vessel having internal liquid tanks, characterized in that, The outer surface of the liquid tank outer plate is provided with a Type B independent liquid tank insulation system as described in any one of claims 1-12.

14. The ship according to claim 13, characterized in that, The liquid tank is polygonal in shape, and the outer surface of the outer plate of the liquid tank includes a top region, multiple side regions and a bottom region. The anchoring components are distributed in the top region and multiple side regions, and the anchoring components and the venting kit are arranged intersectingly in the bottom region.

15. The ship according to claim 13, characterized in that, The liquid tank is spherical in shape, and the anchoring assembly and the venting kit are arranged intersectingly in the area directly below the center of the sphere of the liquid tank. The anchoring assembly is arranged in other areas of the liquid tank.

Images