Insulation structure of low temperature C-type liquid cargo tank

Abstract

The utility model discloses a kind of insulation cold-keeping structures of low-temperature C type liquid cargo tank, including C type liquid cargo tank, it includes liquid cargo tank cylinder and C type head, the both ends of the liquid cargo tank cylinder are provided with the C type head, several the pressing plate connecting assembly equal-interval setting is set outside the liquid cargo tank cylinder and the C type head, the prefabricated cold-keeping block is set on the liquid cargo tank cylinder outside corresponding the pressing plate connecting assembly by flexible insulation sealing assembly, the outer sheathing is set outside the prefabricated cold-keeping block and the C type head, and polyurethane foaming glue is filled between the outer sheathing and the C type head, the utility model uses prefabricated cold-keeping block and inner cavity perfusion foaming polyurethane, can reduce environmental temperature and humidity construction influence, no longer rely on artificial spraying, reduce the polishing leveling process of outer sheathing construction, reduce artificial time and material cost.

Description

Technical Field

[0001] This utility model belongs to the field of liquid cargo tank insulation and cold preservation technology, specifically relating to an insulation and cold preservation structure for a cryogenic C-type liquid cargo tank. Background Technology

[0002] Currently, the insulation and cold preservation construction of cryogenic Type C liquid cargo tanks relies entirely on manual spraying of polyurethane, which presents the following problems:

[0003] 1. High cost: It requires a large investment in manpower and specialized spraying equipment, and manual operation is time-consuming, resulting in high combined costs of labor, equipment, and time.

[0004] 2. High environmental sensitivity: The spraying effect is greatly affected by the ambient temperature and humidity. When the temperature and humidity exceed the standard, problems such as poor polyurethane curing and surface blistering are likely to occur, resulting in a low tolerance for construction errors.

[0005] 3. Redundant and time-consuming processes: The surface of polyurethane sprayed manually has poor flatness, and an additional grinding and leveling process must be added before the subsequent external protection construction, which not only increases material consumption, but also prolongs the overall construction cycle.

[0006] Therefore, we propose an insulating and cold-preserving structure for a cryogenic C-type liquid cargo tank. Utility Model Content

[0007] The purpose of this invention is to provide an insulating and cold-preserving structure for a cryogenic C-type liquid cargo tank, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an insulating and cold-preserving structure for a cryogenic C-type liquid cargo tank, comprising:

[0009] A C-type liquid cargo tank includes a liquid cargo tank cylinder and C-type end caps, with the C-type end caps provided at both ends of the liquid cargo tank cylinder.

[0010] A plurality of pressure plate connecting assemblies are provided, and the plurality of pressure plate connecting assemblies are equally spaced on the outside of the liquid cargo tank body and the C-type end cap;

[0011] A prefabricated cold insulation block is disposed on the outer side of the liquid cargo tank body corresponding to the pressure plate connection assembly via a flexible insulating sealing assembly;

[0012] An outer protective plate is disposed on the outside of the prefabricated cold insulation block and the C-shaped end cap, and polyurethane foam is filled between the outer protective plate and the C-shaped end cap.

[0013] Preferably, the pressure plate connecting assembly includes a fixing nut and a pressure plate;

[0014] The fixing nut is welded and fixed to the outer wall of the liquid cargo tank cylinder and the C-type end cap, and the pressure plate is threaded to the fixing nut through a threaded rod.

[0015] Preferably, the pressure plate and the threaded rod form a T-shaped structure.

[0016] Preferably, the prefabricated cold insulation block has a stepped groove at the position corresponding to the pressure plate that is adapted to the T-shaped structure, and the prefabricated cold insulation block is pressed and fixed by the pressure plate.

[0017] Preferably, the flexible insulating sealing assembly includes a sealant and a flexible insulating block;

[0018] The flexible insulating block is disposed between the pressure plate, the prefabricated cold insulation block and the outer protective plate, and the connection between the flexible insulating block, the pressure plate and the prefabricated cold insulation block is coated with sealant.

[0019] Preferably, the outer protective plate on the outside of the C-shaped head has a hemispherical structure, and the prefabricated cold insulation block and the outer protective plate on the outside of the C-shaped head are aligned and smoothly connected.

[0020] Preferably, the polyurethane foam, the outermost prefabricated cold insulation block, and the pressure plate on the outside of the C-shaped end cap form a solidified integral structure.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. Reduce costs and improve efficiency, and decrease environmental dependence:

[0023] Precast blocks are pre-formed and only require on-site assembly, which is not affected by environmental temperature and humidity, thus shortening the construction cycle; they replace manual spraying of polyurethane, reducing on-site manual operations, lowering equipment investment costs, and significantly reducing labor and equipment costs; they also reduce on-site spraying, grinding, and leveling processes, thus reducing construction safety risks and improving safety assurance capabilities.

[0024] 2. Simplify processes and reduce material consumption:

[0025] The insulating and cold-preserving structure of this utility model has a smooth surface, which directly eliminates the grinding and leveling process, saves the use of resin putty, grinding consumables and other materials for leveling, and reduces material costs; the outer protection construction can be directly connected, the process interval is shortened, and the overall construction efficiency is improved.

[0026] 3. Improve the stability of insulation and cold preservation quality:

[0027] The use of prefabricated cold insulation blocks and internal cavity injection of foamed polyurethane ensures the smoothness of the insulation layer surface. After completion, the outer surface of the liquid cargo tank is smooth and uniform, greatly improving its aesthetics. The sealing and anchoring connection is achieved through pressure plate connection components and flexible insulation sealing components, avoiding the problems of bubbles and cracks in traditional sprayed polyurethane, thus improving the sealing performance and durability of the insulation layer. Attached Figure Description

[0028] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0029] Figure 2 This is a partial cross-sectional structural diagram of the liquid cargo tank cylinder of this utility model;

[0030] Figure 3 This is a partial cross-sectional view of the C-shaped head of this utility model.

[0031] In the diagram: 1. Type C cargo tank; 101. Cargo tank body; 102. Type C end cap; 2. Pressure plate connection assembly; 201. Fixing nut; 202. Pressure plate; 203. Threaded rod; 3. Prefabricated cold insulation block; 4. Flexible insulation sealing assembly; 401. Sealant; 402. Flexible insulation block; 5. Outer protective plate; 6. Polyurethane foam. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-3 The insulating and cold-preserving structure for a cryogenic C-type liquid cargo tank provided by this utility model includes:

[0034] The C-type liquid cargo tank 1 includes a liquid cargo tank cylinder 101 and a C-type end cap 102, with C-type end caps 102 provided at both ends of the liquid cargo tank cylinder 101.

[0035] The pressure plate connecting assembly 2 is provided in several parts. The several pressure plate connecting assemblies 2 are equally spaced on the outside of the liquid cargo tank cylinder 101 and the C-type end cap 102. The pressure plate connecting assembly 2 includes a fixing nut 201 and a pressure plate 202. The fixing nut 201 is welded and fixed to the outer wall of the liquid cargo tank cylinder 101 and the C-type end cap 102. The pressure plate 202 is threadedly connected to the fixing nut 201 through a threaded rod 203. The pressure plate 202 and the threaded rod 203 form a T-shaped structure.

[0036] A prefabricated cold insulation block 3 is installed on the outer side of the pressure plate connecting assembly 2 on the liquid cargo tank cylinder 101 via a flexible insulating sealing assembly 4. A stepped groove adapted to the T-shaped structure is opened on the prefabricated cold insulation block 3 at the position corresponding to the pressure plate 202. The prefabricated cold insulation block 3 is pressed and fixed by the pressure plate 202 to avoid displacement of the prefabricated cold insulation block 3. The flexible insulating sealing assembly 4 includes a sealant 401 and a flexible insulating block 402. The flexible insulating block 402 is placed between the pressure plate 202, the prefabricated cold insulation block 3 and the outer protective plate 5. The connection between the flexible insulating block 402, the pressure plate 202 and the prefabricated cold insulation block 3 is coated with sealant 401. The flexible insulating block 402 serves two purposes: heat preservation and shrinkage buffer. The sealant around the flexible insulating block fixes it and reduces air convection.

[0037] The outer protective plate 5 is set on the outside of the prefabricated cold insulation block 3 and the C-shaped end cap 102, and polyurethane foam 6 is filled between the outer protective plate 5 and the C-shaped end cap 102. The outer protective plate 5 on the outside of the C-shaped end cap 102 has a hemispherical structure, and the outer protective plate 5 on the outside of the prefabricated cold insulation block 3 and the C-shaped end cap 102 are aligned and smoothly connected. The polyurethane foam 6, the outermost prefabricated cold insulation block 3 and the pressure plate 202 on the outside of the C-shaped end cap 102 form a solidified integrated structure. The pressure plate 202 plays a certain anchoring role for the polyurethane foam 6, improving the structural stability.

[0038] This utility model includes a pressure plate connecting assembly 2, a prefabricated cold insulation block 3, and a flexible insulating sealing assembly 4. During construction, the fixing nut 201 is welded and fixed to the outer wall of the cargo tank cylinder 101 and the C-type end cap 102. Then, the prefabricated cold insulation block 3 is installed on the cargo tank cylinder 101 corresponding to the outer side of the fixing nut 201. The pressure plate 202 is connected to the fixing nut 201 through the threaded rod 203, and the pressure plate 202 presses down on the prefabricated cold insulation block 3. Then, a flexible insulating block 402 is filled between the pressure plate 202, the prefabricated cold insulation block 3, and the outer protective plate 5, and a coating is applied around the flexible insulating block 402. Apply sealant 401, then install the outer protective plate 5 on the outside of the prefabricated cold insulation block 3. Next, install the pressure plate 202 on the fixing nut 201 on the outer wall of the C-shaped head 102 through the threaded rod 203, and cover the outside of the C-shaped head 102 with the hemispherical outer protective plate 5, so that the prefabricated cold insulation block 3 and the outer protective plate 5 on the outside of the C-shaped head 102 are aligned and smoothly connected. Then, fill the space between the outer protective plate 5 and the C-shaped head 102 with polyurethane foam 6. The polyurethane foam 6, the outermost prefabricated cold insulation block 3 and the pressure plate 202 on the outside of the C-shaped head 102 form a solidified integrated structure, and the construction is completed.

[0039] This utility model has the following effects:

[0040] 1. Reduce costs and improve efficiency, and decrease environmental dependence:

[0041] Precast blocks are pre-formed and only require on-site assembly, which is not affected by ambient temperature and humidity, thus shortening the construction cycle.

[0042] It replaces manual spraying of polyurethane, reduces on-site manual operations, has low equipment investment costs, and significantly reduces labor and equipment costs.

[0043] Reducing on-site spraying, grinding, and leveling processes lowers construction safety risks and enhances safety assurance capabilities.

[0044] 2. Simplify processes and reduce material consumption:

[0045] The insulating and cold-preserving structure of this utility model has a smooth surface, which directly eliminates the grinding and leveling process, saves the use of resin putty, grinding consumables and other materials for leveling, and reduces material costs;

[0046] External protection construction can be directly connected, shortening the interval between procedures and improving overall construction efficiency;

[0047] 3. Improve the stability of insulation and cold preservation quality:

[0048] Prefabricated cold insulation blocks and internal cavity filling with polyurethane foam are used to ensure the smoothness of the insulation layer surface. After the overall construction is completed, the outer surface of the liquid cargo tank is smooth and consistent, and the aesthetics are greatly improved.

[0049] By using pressure plate connecting components and flexible insulation sealing components for sealing and anchoring, the problems of bubbles and cracks in traditional sprayed polyurethane are avoided, thereby improving the sealing performance and durability of the insulation layer.

[0050] In summary, the construction method of the insulation and cold preservation structure of the cryogenic C-type liquid cargo tank provided in this embodiment is as follows: The fixing nut 201 is welded and fixed to the outer wall of the liquid cargo tank cylinder 101 and the C-type end cap 102. Then, the prefabricated cold preservation block 3 is installed on the liquid cargo tank cylinder 101 corresponding to the outer side of the fixing nut 201. The pressure plate 202 is connected to the fixing nut 201 through the threaded rod 203, and the pressure plate 202 presses down on the prefabricated cold preservation block 3. A flexible insulating block 402 is then filled between the pressure plate 202, the prefabricated cold preservation block 3, and the outer protective plate 5, and a dense coating is applied around the flexible insulating block 402. Seal with sealant 401, then install the outer protective plate 5 on the outside of the prefabricated cold insulation block 3. Next, install the pressure plate 202 on the fixing nut 201 on the outer wall of the C-shaped head 102 through the threaded rod 203, and cover the outside of the C-shaped head 102 with the hemispherical outer protective plate 5, so that the prefabricated cold insulation block 3 and the outer protective plate 5 on the outside of the C-shaped head 102 are aligned and smoothly connected. Then, fill the space between the outer protective plate 5 and the C-shaped head 102 with polyurethane foam 6. The polyurethane foam 6, the outermost prefabricated cold insulation block 3 and the pressure plate 202 on the outside of the C-shaped head 102 form a solidified integrated structure, and the construction is completed.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An insulating and cold-preserving structure for a cryogenic C-type liquid cargo tank, characterized in that, include: A C-type cargo tank (1) includes a cargo tank cylinder (101) and a C-type end cap (102), wherein the C-type end cap (102) is provided at both ends of the cargo tank cylinder (101). A pressure plate connecting assembly (2) is provided in several units, and several pressure plate connecting assemblies (2) are equally spaced on the outside of the liquid cargo tank cylinder (101) and the C-type end cap (102); Prefabricated cold insulation block (3), the prefabricated cold insulation block (3) is set on the outer side of the liquid cargo tank cylinder (101) corresponding to the pressure plate connection assembly (2) by a flexible insulating sealing assembly (4); The outer protective plate (5) is disposed on the outside of the prefabricated cold insulation block (3) and the C-type end cap (102), and polyurethane foam (6) is filled between the outer protective plate (5) and the C-type end cap (102).

2. The insulating and cold-preserving structure of a cryogenic C-type liquid cargo tank according to claim 1, characterized in that: The pressure plate connecting assembly (2) includes a fixing nut (201) and a pressure plate (202); The fixing nut (201) is welded and fixed to the outer wall of the liquid cargo tank cylinder (101) and the C-type end cap (102), and the pressure plate (202) is threadedly connected to the fixing nut (201) through the threaded rod (203).

3. The insulating and cold-preserving structure of a cryogenic C-type liquid cargo tank according to claim 2, characterized in that: The pressure plate (202) and the threaded rod (203) form a T-shaped structure.

4. The insulating and cold-preserving structure of a cryogenic C-type liquid cargo tank according to claim 3, characterized in that: The prefabricated cold insulation block (3) has a stepped groove at the position corresponding to the pressure plate (202) that is adapted to the T-shaped structure. The prefabricated cold insulation block (3) is pressed and fixed by the pressure plate (202).

5. The insulating and cold-preserving structure of a cryogenic C-type liquid cargo tank according to claim 4, characterized in that: The flexible insulating sealing assembly (4) includes a sealant (401) and a flexible insulating block (402). The flexible insulating block (402) is disposed between the pressure plate (202), the prefabricated cold insulation block (3) and the outer protective plate (5), and the connection between the flexible insulating block (402), the pressure plate (202) and the prefabricated cold insulation block (3) is coated with sealant (401).

6. The insulating and cold-preserving structure of a cryogenic C-type liquid cargo tank according to claim 1, characterized in that: The outer protective plate (5) on the outside of the C-type end cap (102) is a hemispherical structure, and the prefabricated cold insulation block (3) and the outer protective plate (5) on the outside of the C-type end cap (102) are aligned and smoothly connected.

7. The insulating and cold-preserving structure of a cryogenic C-type liquid cargo tank according to claim 2, characterized in that: The polyurethane foam (6), the outermost prefabricated cold insulation block (3), and the pressure plate (202) on the outside of the C-type end cap (102) form a solidified integrated structure.

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