Thermal insulation structure of high-temperature directly-buried pipeline

Abstract

The utility model discloses a heat preservation structure of a high-temperature directly-buried pipeline, and relates to the technical field of pipeline heat preservation. Comprising a pipeline, the surface of the pipeline is sleeved with an inner-layer steel pipe, the surface of the inner-layer steel pipe is provided with a heat preservation assembly, the heat preservation assembly comprises a polyurethane foam layer arranged on the surface of the inner-layer steel pipe in a sleeving mode, the surface of the polyurethane foam layer is sleeved with an extruded polystyrene layer, and the surface of the extruded polystyrene layer is sleeved with a silicate layer. The surface of the silicate layer is sleeved with a glass wool layer; the polyurethane foam layer, the extruded polystyrene layer, the silicate layer and the glass wool layer thermal insulation material interlayer are bonded together through the arranged glue layer, so that the thermal insulation effect of the high-temperature directly-buried pipe is effectively improved, heat loss is prevented, and the arranged glue layer can also form a thermal insulation isolation layer to improve the thermal insulation effect of the thermal insulation assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline heat preservation, in particular to a heat preservation structure for directly buried high-temperature pipelines. Background Technique

[0002] With the inclination of China's basic construction towards infrastructure projects, the directly buried high-temperature pipelines for centralized heating in China have gradually increased in recent years, and the investment amount and mileage have soared. In the heating of directly buried high-temperature pipelines, the heat preservation performance is very important. However, generally, only one layer of heat insulation layer is provided for directly buried high-temperature pipelines, and the heat preservation performance needs to be further improved. Moreover, once the external protection pipe is damaged, the heat insulation of the directly buried high-temperature pipeline may completely fail. In view of the above problems, a heat preservation structure for directly buried high-temperature pipelines is proposed to solve the above problems. Content of the Utility Model

[0003] In order to solve the above problems, the purpose of the utility model is to provide a heat preservation structure for directly buried high-temperature pipelines.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a heat preservation structure for directly buried high-temperature pipelines, including a pipeline, an inner steel pipe is sleeved on the surface of the pipeline, a heat preservation component is arranged on the surface of the inner steel pipe, the heat preservation component includes a polyurethane foam layer sleeved on the surface of the inner steel pipe, an extruded polystyrene layer is sleeved on the surface of the polyurethane foam layer, a silicate layer is sleeved on the surface of the extruded polystyrene layer, and a glass wool layer is sleeved on the surface of the silicate layer.

[0005] Preferably, a waterproof layer is sleeved on the surface of the glass wool layer.

[0006] Preferably, an outer steel pipe is sleeved on the surface of the waterproof layer.

[0007] Preferably, both the inner steel pipe and the outer steel pipe are made of seamless steel pipes.

[0008] Preferably, a protective layer is sleeved on the surface of the outer steel pipe.

[0009] Preferably, the polyurethane foam layer, the extruded polystyrene layer, the silicate layer and the glass wool layer are all bonded by a glue layer.

[0010] Compared with the prior art, the beneficial effect of the utility model lies in that:

[0011] By arranging the glue layer to bond the heat preservation material interlayers of the polyurethane foam layer, the extruded polystyrene layer, the silicate layer and the glass wool layer, the heat preservation effect of the directly buried high-temperature pipeline is effectively increased to prevent heat loss, and the arranged glue layer can also form a heat preservation isolation layer to increase the heat preservation effect of the heat preservation component. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 Structural schematic diagram of the present invention;

[0014] Figure 2 Structural sectional view of the present invention.

[0015] In the figure: 100, pipeline; 200, outer steel pipe; 300, inner steel pipe; 400, polyurethane foam layer; 500, extruded polystyrene layer; 600, silicate layer; 700, glass wool layer; 800, waterproof layer. Specific embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0017] Embodiment: As Figure 1 - Figure 2 shown, the present invention provides a high-temperature directly buried pipeline insulation structure, including a pipeline 100. An inner steel pipe 300 is sleeved on the surface of the pipeline 100. The provided inner steel pipe 300 mainly bears the pressure of the medium in the pipeline 100 and protects the insulation components from being damaged. A polyurethane foam layer 400 is provided on the surface of the inner steel pipe 300. The polyurethane foam layer 400 has characteristics such as heat preservation and waterproofing.

[0018] An extruded polystyrene layer 500 is sleeved on the surface of the polyurethane foam layer 400. The extruded polystyrene layer 500 has characteristics such as high compressive strength, low water absorption rate, moisture-proof, airtight, light weight, corrosion resistance, super anti-aging, and low thermal conductivity. Being provided outside the polyurethane foam layer 400 can, on the one hand, play a good supporting and protecting effect, and at the same time can further enhance heat preservation. Among them, the polyurethane foam layer 400 is formed by filling polyurethane foam between the inner steel pipe 300 and the extruded polystyrene layer 500 and solidifying through foaming. Due to the high compressive strength characteristic of the extruded polystyrene layer 500, the formed polyurethane foam layer 400 is compact. Coupled with the moisture-proof property of the polyurethane foam layer 400, a good isolation effect can be achieved to prevent the extruded polystyrene layer 500 from getting damp.

[0019] A silicate layer 600 is sleeved on the surface of the extruded polystyrene layer 500. The silicate layer 600 also has the property of heat preservation and good waterproof performance, and can protect the extruded polystyrene layer 500 to avoid moisture absorption after the extruded polystyrene layer 500 is in contact with water for a long time.

[0020] A glass wool layer 700 is sleeved on the surface of the silicate layer 600. The glass wool layer 700 has characteristics such as small volume density, low thermal conductivity, heat preservation and heat insulation, good sound absorption performance, corrosion resistance, and stable chemical properties. The extruded polystyrene layer 500, the silicate layer 600, and the glass wool layer 700 are all bonded by an adhesive layer. The extruded polystyrene layer 500, the silicate layer 600, and the glass wool layer 700 bonded by the adhesive layer can prevent heat loss of the flowing medium inside the pipeline 100, and after the adhesive layer solidifies, it can also form a heat insulation layer to increase the heat preservation effect. The polyurethane foam layer 400, the extruded polystyrene layer 500, the silicate layer 600, and the glass wool layer 700 can be superimposed on each other to protect each other and extend the service life of the heat preservation component.

[0021] A waterproof layer 800 is sleeved on the surface of the glass wool layer 700, and an outer steel pipe 200 is sleeved on the surface of the waterproof layer 800. Both the inner steel pipe 300 and the outer steel pipe 200 are made of seamless steel pipes.

[0022] The waterproof layer 800 is made of asphalt. The provided waterproof layer 800 is a protective layer provided to prevent groundwater from seeping into the glass wool layer 700. The provided outer steel pipe 200 bears the pressure of the external environment and protects the heat preservation component.

[0023] A protective layer is sleeved on the surface of the outer steel pipe 200.

[0024] The provided protective layer prevents groundwater from corroding the outer steel pipe 200.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model is also intended to include these changes and modifications.

Claims

1. High-temperature directly buried pipeline thermal insulation structure, including a pipeline (100), characterized in that: The surface of the pipeline (100) is sleeved with an inner steel pipe (300). A heat insulation component is provided on the surface of the inner steel pipe (300). The heat insulation component includes a polyurethane foam layer (400) sleeved on the surface of the inner steel pipe (300). A extruded polystyrene layer (500) is sleeved on the surface of the polyurethane foam layer (400). A silicate layer (600) is sleeved on the surface of the extruded polystyrene layer (500). A glass wool layer (700) is sleeved on the surface of the silicate layer (600). The pipeline (100) reduces heat loss through the heat insulation component.

2. The high-temperature directly buried pipeline thermal insulation structure according to claim 1, characterized in that, A waterproof layer (800) is sleeved on the surface of the glass wool layer (700).

3. The high-temperature directly buried pipeline thermal insulation structure according to claim 2, characterized in that, An outer steel pipe (200) is sleeved on the surface of the waterproof layer (800).

4. The high-temperature directly buried pipeline heat insulation structure according to claim 3, characterized in that, Both the inner steel pipe (300) and the outer steel pipe (200) are made of seamless steel pipes.

5. The high-temperature directly buried pipeline thermal insulation structure according to claim 4, wherein, A protective layer is sleeved on the surface of the outer steel pipe (200).

6. The high-temperature directly buried pipeline thermal insulation structure according to claim 1, characterized in that The polyurethane foam layer (400), the extruded polystyrene layer (500), the silicate layer (600) and the glass wool layer (700) are all bonded by an adhesive layer.

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