Integrated thermal insulation pipe

Abstract

The utility model discloses an integrated thermal insulation pipe, which belongs to the technical field of pipeline manufacturing, and comprises an inner pipe (1), an outer pipe (2), a thermal insulation layer (3) and two end plates (4), the outer pipe (2) is sleeved outside the inner pipe (1), the end parts of the outer pipe (2) and the inner pipe (1) are arranged on the same plane, the number of the end plates (4) is two, and the end plates (4) are respectively and fixedly connected with the inner pipe (1) and the outer pipe (2) on the same side. A cavity structure with a closed end face is formed among the end plate (4), the inner pipe (1) and the outer pipe (2), and the heat preservation layer (3) is contained in the cavity structure. The thermal insulation pipe, the inner pipe (1), the outer pipe (2) and the end plate (4) form the integrated structure, and the thermal insulation layer (3) is sealed in the integrated structure, so that the overall strength is high, the structure is simple, the field installation complexity can be reduced, the construction time can be shortened, and meanwhile, the later maintenance cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline manufacturing, and particularly relates to an integrated insulation pipe. Background Art

[0002] Pipeline insulation is a technical measure to reduce heat dissipation or cold loss of pipelines. Pipeline insulation refers to wrapping insulation materials, such as polyurethane, rock wool, etc. on the outside of the pipeline, which can effectively reduce heat conduction and improve energy utilization efficiency.

[0003] In the grain storage industry, to ensure the quality of stored grains and improve the safety of grain storage, it is necessary to keep the grains in the warehouse at a certain temperature. Especially in the high-temperature season, it is often necessary to transport the cold medium (cold air at 10 - 15 °C) generated by a cold source (such as a grain cooler) to the grains through an insulation pipeline to reduce the temperature in the warehouse.

[0004] The patent with the publication number CN213236387U discloses a trinity insulation pipe. By setting protection components, including end plates, connecting rods and end plates and other components, an effective closed structure is formed at the port of the insulation pipe. The end plate closes the end of the inner pipe to prevent the inside of the inner pipe from being affected by the external environment, such as dust, water vapor, corrosive gases, etc. from entering the pipeline, thereby reducing the influence of the external environment on the insulation pipe and protecting the internal structure and insulation performance of the insulation pipe.

[0005] The trinity insulation pipe disclosed in the patent with the publication number CN213236387U has the following deficiencies: 1. In the pipeline system, in order to protect the insulation layer, an extremely complex protection component is designed at the port of the inner pipe (the protruding part), with a complex structure, which not only increases the manufacturing cost of the pipeline, but also is very unfavorable for the convenience of construction site operations; 2. The lengths of the insulation layer and the protection pipe are less than the length of the inner pipe. Especially, the lengths of the outer pipe and the inner pipe are inconsistent, resulting in difficulties in connecting the pipelines. Content of the Utility Model

[0006] The utility model aims to overcome the problems existing in the prior art and provides an integrated insulation pipe. The inner pipe, the outer pipe and the end plate form an integrated structure, and the insulation layer is enclosed inside, which not only has high overall strength, but also has a simple structure, can reduce the complexity of on-site installation, shorten the construction time, and at the same time has low later maintenance cost.

[0007] To achieve the above object, the present application provides the following technical solutions: It includes an inner pipe, an outer pipe, an insulation layer and end plates. The outer pipe is sleeved outside the inner pipe. The ends of the outer pipe and the inner pipe are arranged on the same plane. The number of end plates is 2, which are respectively fixedly connected to the outer pipe and the inner pipe on the same side. A cavity structure with a closed end face is formed between the end plates and the inner pipe and the outer pipe, and the insulation layer is accommodated inside the cavity structure.

[0008] Furthermore, the inner tube, the outer tube and the end plate are made of the same kind of material.

[0009] Furthermore, the inner tube, the outer tube and the end plate are all made of stainless steel.

[0010] Furthermore, the end plate is fixedly arranged outside the corresponding end surface of the cavity structure.

[0011] Furthermore, the end plate is fixedly arranged inside the corresponding end surface of the cavity structure.

[0012] Furthermore, the heat insulation layer is a polyurethane heat insulation layer or a polystyrene heat insulation layer.

[0013] Furthermore, a heat insulation layer is also arranged between the heat insulation layer and at least one of the end plates.

[0014] Furthermore, the heat insulation layer is a silicone high-temperature resistant coating or a ceramic high-temperature heat insulation coating.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. For the integrated heat insulation pipe of the utility model, two end plates are respectively fixedly connected to the inner pipe and the outer pipe on the same side to form a cavity structure with a closed end surface to accommodate the heat insulation layer. This structure can ensure the sealing and fixation of the heat insulation layer at the end of the pipeline. And the structure of the heat insulation pipe is relatively simple, the connection method between the end plate and the inner pipe and the outer pipe is more intuitive, reducing the complexity of on-site installation, shortening the construction time and reducing the labor cost.

[0017] 2. For the integrated heat insulation pipe of the utility model, the inner pipe and the outer pipe are made of the same kind of material, ensuring the overall strength of each part of the integrated pipe.

[0018] 3. For the integrated heat insulation pipe of the utility model, the inner and outer pipes and the end plate are all made of stainless steel. It not only has high strength, but also has a high surface flatness of the outer pipe and is beautiful in appearance. Due to the characteristics of stainless steel materials, it can be applied to scenarios with high hygiene requirements such as food and medicine.

[0019] 4. For the integrated heat insulation pipe of the utility model, at least one side of the heat insulation layer is coated with a heat insulation layer, which can prevent the heat insulation layer from being damaged by high temperature during the welding of the end plate, extend the service life of the heat insulation layer, and reduce the maintenance and replacement costs caused by the damage of the heat insulation layer. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a cross-sectional view of the integrated heat-insulating pipe in Embodiment 1 of the present utility model;

[0022] Figure 2 is a cross-sectional view of the integrated heat-insulating pipe in Embodiment 2 of the present utility model;

[0023] In the figure, 1 is the inner pipe; 2 is the outer pipe; 3 is the heat-insulating layer; 4 is the end plate; 5 is the heat-insulating layer. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment 1

[0026] As Figure 1 shown, an integrated heat-insulating pipe includes an inner pipe 1, an outer pipe 2, a heat-insulating layer 3 and an end plate 4, and the outer pipe 2 is sleeved outside the inner pipe 1.

[0027] The ends of the outer pipe 2 and the inner pipe 1 are arranged on the same plane.

[0028] The number of end plates 4 is 2, which are respectively fixedly connected to the inner pipe 1 and the outer pipe 2 on the same side. A cavity structure with a closed end face is formed between the end plate 4 and the inner pipe 1 and the outer pipe 2, and the heat-insulating layer 3 is accommodated inside the cavity structure.

[0029] The integrated structure of the inner and outer pipes and the end plate can enclose the heat-insulating layer inside the pipeline, preventing external factors from damaging the heat-insulating layer 3. The ends of the outer pipe 2 and the inner pipe 1 are arranged on the same plane, and the end plate can be directly fixed on both sides of the cavity structure, with a simple structure and easy production; moreover, it makes the connection with other pipelines or pipe fittings more convenient in the future, reduces the complexity of on-site installation, shortens the construction time, and reduces the labor cost.

[0030] The materials of the inner tube 1, the outer tube 2 and the end plate 4 can be selected according to different application scenarios. It is preferably made of materials of the same kind to ensure the overall strength of each part of the integrated tube and improve the service life. Further preferably, the inner tube 1, the outer tube 2 and the end plate 4 are all made of stainless steel materials. The surface of the stainless steel inner tube is smooth and not easy to adsorb impurities and dirt, which is convenient for cleaning and maintenance, reducing the possibility of the growth of bacteria and microorganisms. The stainless steel outer tube can withstand a certain external pressure and environmental changes, providing additional support for the entire pipeline system.

[0031] The end plate 4 is fixed outside the corresponding end face of the cavity structure, that is, the outer periphery of the end plate 4 is connected to the outer wall of the outer tube, and the inner periphery of the end plate 4 is connected to the inner wall of the inner tube.

[0032] The thermal insulation layer 3 is made of thermal insulation materials, and the thermal insulation materials are one or two of polyurethane and polystyrene, with good thermal insulation effect and can effectively prevent heat loss.

[0033] The heat insulation layer 5 is arranged between the heat insulation layer 3 and at least one of the end plates 4 at one end. If the first end plate 4 is welded and cooled and then the heat insulation layer 3 is filled, only a heat insulation layer 5 needs to be arranged on the heat insulation layer 3 on the side of the end plate 4 to be welded or on the surface of the second end plate 4; if the first end plate 4 is not cooled after welding and the heat insulation layer 3 must be filled immediately, a heat insulation layer 5 needs to be arranged on the surfaces of the two end plates 4 to be welded or at both ends of the heat insulation layer 3.

[0034] The heat insulation layer 5 is made of high-temperature resistant heat insulation coatings, and the high-temperature resistant heat insulation coatings are one or two of silicone high-temperature resistant coatings and ceramic high-temperature resistant heat insulation coatings, with good heat insulation effect and can effectively prevent the heat insulation layer 3 from being affected by high temperature during the welding process.

[0035] The form of the integrated heat insulation pipe of the present application is not limited to straight pipes, and is also applicable to pipe fittings such as elbows, reducers and tees.

[0036] The manufacturing process of the integrated heat insulation pipe of the present application is as follows:

[0037] (1) Select inner tubes, outer tubes, end plates and thermal insulation materials of appropriate materials according to different application scenarios;

[0038] (2) Place the inner tube 1 inside the outer tube 2 and weld the first end plate 4 at one end;

[0039] (3) After cooling, fill the cavity structure formed by the inner tube 1 and the outer tube 2 with thermal insulation materials to form the thermal insulation layer 3;

[0040] (4) Apply a layer of high-temperature resistant heat insulation coating on the heat insulation layer on the side of the end plate 4 to be welded or on the surface of the second end plate 4 to form the heat insulation layer 5;

[0041] (5)Finally, weld the second end plate to the inner pipe and the outer pipe to form a heat-insulating pipe with an integrated structure.

[0042] Example 2

[0043] The structure, material, and manufacturing method of the integrated heat-insulating pipe in Example 2 are the same as those in Example 1. The difference is that, as Figure 2 shown, the end plate 4 is fixedly arranged inside the corresponding cross-section of the cavity structure, the outer periphery of the end plate 4 is connected to the inner wall of the outer pipe, and the inner periphery of the end plate 4 is connected to the outer wall of the inner pipe.

Claims

1. An integrated insulation pipe, characterized in that: It includes an inner tube (1), an outer tube (2), a thermal insulation layer (3) and end plates (4). The outer tube (2) is sleeved outside the inner tube (1). The outer tube (2) and the end of the inner tube (1) are arranged in the same plane. The number of the end plates (4) is two, which are respectively fixedly connected to the inner tube (1) and the outer tube (2) on the same side. A cavity structure with a closed end face is formed between the end plate (4) and the inner tube (1) and the outer tube (2). The thermal insulation layer (3) is accommodated inside the cavity structure.

2. The integrated insulation pipe according to claim 1, wherein: The inner tube (1), the outer tube (2) and the end plate (4) are made of the same material.

3. The integrated insulation pipe according to claim 2, wherein: The inner tube (1), the outer tube (2) and the end plate (4) are all made of stainless steel.

4. The integrated insulation pipe according to claim 1, characterized in that: The end plate (4) is fixedly arranged outside the corresponding end face of the cavity structure.

5. The integrated heat-insulating pipe according to claim 1, wherein: The end plate (4) is fixedly arranged inside the corresponding end face of the cavity structure.

6. The integrated insulation pipe according to claim 1, wherein: The thermal insulation layer (3) is a polyurethane thermal insulation layer or a polystyrene thermal insulation layer.

7. The integral heat-insulating pipe according to claim 6, wherein: An insulating layer (5) is also arranged between the thermal insulation layer (3) and at least one of the end plates (4).

8. The integrated thermal insulation pipe according to claim 7, wherein: The insulating layer (5) is a silicone high-temperature resistant coating or a ceramic high-temperature resistant insulating coating.

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