Heat insulation structure for pipe orifice of low-temperature storage tank

Abstract

The utility model discloses a low-temperature storage tank pipe opening heat insulation structure. The structure comprises a sleeve, a heat insulation layer and a heat insulation layer, the cold insulation filler is arranged between the sleeve and the pipeline and is used for reducing cold transfer; the cold insulation block is arranged at the tail end of the sleeve and used for compacting the cold insulation filler and preventing a cold bridge from being formed between the pipeline and the sleeve; the heat insulation assembly is arranged at the tail end of the sleeve, the peripheries of the pipeline and the cold insulation block in a sleeving mode and extends in the direction away from the sleeve along the pipeline. According to the low-temperature storage tank pipe opening heat insulation structure, the sleeve is arranged on the periphery of the pipeline, the space between the sleeve and the pipeline is filled with the sufficient cold insulation filler, the heat insulation assembly is arranged at the tail end of the sleeve, the cold insulation block is arranged between the heat insulation assembly and the cold insulation filler, and the cold insulation block can extrude the cold insulation filler; the heat insulation assembly, the cold insulation block and the cold insulation filler are used in cooperation, and cold conduction of low-temperature objects in the pipeline can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of storage equipment, and more specifically to a low-temperature storage tank pipe opening insulation structure. Background Art

[0002] Low temperature flat bottom storage tanks are widely used for storage of low temperature media, such as low temperature liquid hydrogen, low temperature liquid nitrogen, liquefied natural gas, etc. Due to the low temperature characteristics of the medium, such as the storage temperature of low temperature liquid hydrogen is -252.78℃, the storage temperature of liquid nitrogen is -196℃, and the storage temperature of liquefied natural gas is -161.25℃, the pipe mouth of the low temperature medium adopts the traditional insulation form. Due to the existence of cold bridges, frost is easy to appear on the pipe mouth, which affects the appearance and causes a large loss of cold.

[0003] In summary, how to avoid the loss of cold energy in low-temperature storage equipment is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a low-temperature storage tank pipe mouth insulation structure, by arranging a sleeve on the outer periphery of the pipeline, a cold insulation filler is provided between the sleeve and the pipeline, an insulation component is sleeved on the end of the outer sleeve of the storage tank, and a cold insulation block is provided between the insulation component and the cold insulation filler, which can limit the conduction of cold and reduce the loss of cold.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-temperature storage tank pipe opening insulation structure, comprising:

[0007] A sleeve, which is sleeved on the outer circumference of the pipe;

[0008] A cold-insulating filler is provided between the sleeve and the pipe and is used to reduce cold transfer;

[0009] A cold-insulation block is provided at the end of the sleeve, and is used to compact the cold-insulation filler and prevent a cold bridge from being formed between the pipe and the sleeve;

[0010] The heat insulation component is sleeved on the end of the sleeve, the pipe and the outer periphery of the cold insulation block and extends along the pipe in a direction away from the sleeve.

[0011] Preferably, it also includes a flange, which is arranged on the side of the cold insulation block away from the cold insulation filler, and the flange is used to fix the cold insulation block and can be used in conjunction with the cold insulation block to compact the cold insulation filler.

[0012] Preferably, it also includes a baffle, which is fixed to a side of the cold insulation block away from the cold insulation filler, and the baffle is used in conjunction with the cold insulation block to compact the cold insulation filler and fix the cold insulation block.

[0013] Preferably, a rib plate is provided on the outer periphery of the pipe, and the rib plate is used to support the sleeve and the cold insulation filler.

[0014] Preferably, a lower baffle is provided at one end of the sleeve away from the insulation assembly, and the lower baffle is used to achieve sealing of the end of the sleeve away from the cold insulation block.

[0015] Preferably, a sleeve is provided between the sleeve and the lower baffle, and the sleeve is sleeved on the outer periphery of the upper end of the pipe ceiling insulation layer.

[0016] Preferably, the cold insulation block is an annular structure, and the cold insulation block includes two C-shaped components with the same structure.

[0017] The utility model provides a low-temperature storage tank pipe mouth insulation structure, by arranging a sleeve on the outer periphery of the pipeline, a sufficient amount of cold insulation filler is filled between the sleeve and the pipeline, an insulation component is arranged at the end of the sleeve, and a cold insulation block is arranged between the insulation component and the cold insulation filler, and the cold insulation block can extrude the cold insulation filler. The cold conduction of low-temperature objects in the pipeline can be reduced by using the insulation component, the cold insulation block and the cold insulation filler in combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 The utility model is a schematic structural diagram of the low-temperature storage tank pipe opening insulation structure provided by the utility model.

[0020] Reference numerals:

[0021] 1-sleeve; 2-pipe; 3-cold insulation filler; 4-insulation component; 5-cold insulation block; 6-flange; 7-rib plate; 8-sleeve; 9-dome plate; 10-fastener. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The core of the utility model is to provide a low-temperature storage tank pipe opening insulation structure, which can limit cold conduction and reduce cold loss.

[0024] It should be noted that the directions or positional relationships indicated by “upper”, “lower”, “front”, “back”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0025] The present application provides a low-temperature storage tank pipe opening insulation structure, comprising: a sleeve 1, a cold insulation filler 3, an insulation component 4 and a cold insulation block 5;

[0026] The sleeve 1 is sleeved on the outer circumference of the pipe 2;

[0027] The cold-insulating filler 3 is arranged between the sleeve 1 and the pipe 2 and is used to reduce the cold transfer;

[0028] The cold-insulating block 5 is arranged at the end of the sleeve 1, and is used to compact the cold-insulating filler 3 and prevent the formation of a cold bridge between the pipe 2 and the sleeve 1, thereby reducing the transfer of cold;

[0029] The heat insulation component 4 is sleeved on the end of the sleeve 1 , the outer periphery of the pipe 2 and the cold insulation block 5 , and extends along the pipe 2 in a direction away from the sleeve 1 .

[0030] Specifically, as attached Figure 1As shown, the pipe 2 is arranged in the vertical direction, and the outer periphery of the pipe 2 is sleeved with a sleeve 1, which is also a tubular structure, and the diameter of the sleeve 1 is significantly larger than the pipe 2. A sufficient amount of cold insulation filler 3 is filled between the sleeve 1 and the pipe 2, and the cold insulation filler 3 is preferably glass wool. A cold insulation block 5 is arranged at the upper end of the sleeve 1, and a fastener 10 is arranged between the cold insulation block 5 and the cold insulation filler 3. The fastener 10 is used to support the cold insulation block 5. The fastener 10 is used in conjunction with the cold insulation block 5 to press the cold insulation filler 3. The outer periphery of the upper end of the sleeve 1 is provided with an insulation component 4, which can be a PIR (Polyisocyanurate Foam) foamed on site, which is used for cold insulation of the outer periphery of the pipe outside the storage tank and the cold insulation block 5. The material of the cold insulation block 5 is preferably PIR, and it should be ensured that the glass wool is fully filled between the sleeve 1 and the pipe 2. The cold insulation filler 3, the insulation component 4 and the cold insulation block 5 are used in conjunction to limit the conduction of cold and reduce the loss of cold.

[0031] In addition, the position of the cold insulation block 5 set in the present application is set as a baffle in the prior art. The space between the sleeve 1 and the pipe 2 is closed at the upper end and open at the lower end. During construction, the glass wool needs to be stuffed between the sleeve 1 and the pipe 2 from the bottom to the top. The construction difficulty is high and it cannot be guaranteed that the glass wool is stuffed tightly. The modified plan is to close the front lower end, and after the upper end is opened, the glass wool can be filled between the sleeve 1 and the pipe 2 from the top to the bottom, which greatly reduces the construction difficulty and facilitates the stuffing of the glass wool.

[0032] Based on the above embodiment, a flange 6 is further included. The flange 6 is arranged on the side of the cold insulation block 5 away from the cold insulation filler 3, and the flange 6 is used to fix the cold insulation block 5 and can be used in conjunction with the cold insulation block 5 to compact the cold insulation filler 3.

[0033] Specifically, the flange 6 is arranged above the cold insulation block 5, and the upper end of the sleeve 1 is a flange surface, which is used in conjunction with the flange 6 to fix the cold insulation block 5 and extrude the cold insulation filler 3. During installation, the flange 6 needs to be put into the pipe 2 in advance. Fixing the cold insulation block 5 by the flange 6 can achieve better insulation performance.

[0034] In some embodiments, a baffle is further included, which is fixed to the side of the cold insulation block 5 facing away from the cold insulation filler 3, and the baffle is used in conjunction with the cold insulation block 5 to compact the cold insulation filler 3 and fix the cold insulation block 5.

[0035] Specifically, above the first end of the sleeve 1, a baffle can be fixed on the pipe 2 by welding, the cold insulation block 5 is supported by the baffle, and the cold insulation filler 3 is extruded by the baffle. Compared with the use of the flange 6, fixing the baffle by welding has better stability.

[0036] In some embodiments, a rib plate 7 is provided on the outer periphery of the pipe 2 , and the rib plate 7 is used to support the sleeve 1 and the cold insulation filler 3 .

[0037] Specifically, a lower baffle and a rib plate 7 are provided at the lower middle part of the outer periphery of the pipeline 2, and a sufficient amount of cold-insulating filler 3 is evenly filled in the sleeve 1. The cold-insulating filler 3 is supported by the lower baffle and the rib plate 7 to prevent the sleeve 1 from falling off. In addition, it should be noted that the welding between the sleeve 1 and the lower baffle and the pipeline 2 is a key focus during construction to prevent the medium from leaking therefrom, and since this part is in the ceiling space of the storage tank, it cannot be repaired when leakage occurs and there is medium stored therein.

[0038] On the basis of the above embodiment, a sleeve 8 is provided at the lower side of the pipeline 2 , and the sleeve 8 is sleeved on the outer periphery of the upper end of the ceiling insulation layer of the pipeline 2 .

[0039] Specifically, the second end of the pipe 2, i.e. Figure 1 The lower end of the sleeve 8 passes through the ceiling and is connected to the interior of the storage tank. The distance between the lower end of the sleeve 8 and the ceiling insulation layer is about 50 mm. The sleeve 8 can be convenient for fixing and supporting the cold insulation filler 3. The lower baffle is arranged between the sleeve 8 and the ceiling insulation layer. There is cold transfer between the lower baffle, the sleeve 8 and the pipeline 2, but the ceiling space is filled with BOG gas (Boil Off Gas, also known as evaporation gas), which is a thermal insulator.

[0040] On the basis of the above-mentioned embodiment, the cold-isolating block 5 is an annular structure, and the cold-isolating block 5 includes two C-shaped components with the same structure.

[0041] Specifically, the cold insulation block 5 can be formed by splicing two C-shaped cold insulation blocks, which is easy to install and disassemble and reduces the difficulty of installation.

[0042] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0043] The above is a detailed introduction to a low-temperature storage tank pipe opening insulation structure provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A low-temperature storage tank pipe opening insulation structure, characterized in that: include: A sleeve (1) is sleeved on the outer circumference of the pipe (2); A cold-insulating filler (3) is provided between the sleeve (1) and the pipe and is used to reduce cold transfer; A cold-insulating block (5) is arranged at the end of the sleeve (1), and the cold-insulating block (5) is used to compact the cold-insulating filler (3) and prevent a cold bridge from being formed between the pipe (2) and the sleeve (1); The heat insulation component (4) is sleeved on the end of the sleeve (1), the outer periphery of the pipe (2) and the cold insulation block (5), and extends along the pipe (2) in a direction away from the sleeve (1).

2. The low-temperature storage tank pipe opening insulation structure according to claim 1 is characterized in that: It also includes a flange (6), which is arranged on a side of the cold insulation block (5) away from the cold insulation filler (3), and the flange (6) is used to fix the cold insulation block (5) and can be used in conjunction with the cold insulation block (5) to compact the cold insulation filler (3).

3. The low-temperature storage tank pipe opening insulation structure according to claim 1, characterized in that: It also includes a baffle, which is fixed to a side of the cold insulation block (5) facing away from the cold insulation filler (3), and the baffle is used in conjunction with the cold insulation block (5) to compact the cold insulation filler (3) and fix the cold insulation block (5).

4. The low-temperature storage tank pipe opening insulation structure according to claim 1, characterized in that: A rib plate (7) is provided on the outer periphery of the pipe (2), and the rib plate (7) is used to support the sleeve (1) and the cold insulation filler (3).

5. The low-temperature storage tank pipe opening insulation structure according to claim 4, characterized in that: A lower baffle is provided at one end of the sleeve (1) facing away from the thermal insulation component (4), and the lower baffle is used to seal the end of the sleeve (1) facing away from the cold insulation block (5).

6. The low-temperature storage tank pipe opening insulation structure according to claim 5, characterized in that: A sleeve (8) is provided between the sleeve (1) and the lower baffle, and the sleeve (8) is sleeved on the outer periphery of the upper end of the suspended ceiling insulation layer of the pipeline (2).

7. The low-temperature storage tank pipe opening insulation structure according to any one of claims 1 to 6, characterized in that: The cold-isolating block (5) is an annular structure, and comprises two C-shaped components with the same structure.

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