High-temperature-resistant directly-buried thermal insulation pipe

Abstract

The utility model discloses a high-temperature-resistant directly-buried thermal insulation pipe which comprises a thermal insulation pipe body. The heat preservation pipe is composed of a pipeline and a connecting pipe, connecting flanges are installed on the two sides of the connecting pipe and fixedly installed on the two sides of the connecting pipe through bolts, the pipeline is composed of an inner-layer pipe, an outer-layer pipe and heat insulation foam, the outer-layer pipe is located on the outer side of the pipeline, and the inner-layer pipe is located on the inner side of the pipeline. The thermal insulation foams are located between the inner-layer pipe and the outer-layer pipe, a supporting plate is arranged between the thermal insulation foams, and the two ends of the supporting plate are installed on the inner side of the inner-layer pipe and the outer side of the outer-layer pipe. In the using process, the thermal insulation effect of the thermal insulation pipe can be improved through the thermal insulation foam, the influence of the temperature inside and outside the thermal insulation pipe is reduced, the thermal insulation foam is supported through the supporting plate in the using process of the thermal insulation foam, and the situation that the thermal insulation foam deforms due to the fact that the thermal insulation pipe bears pressure in the using process is avoided; therefore, the heat-insulating effect of the heat-insulating pipe is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of directly buried heat-insulating pipes, in particular to a high-temperature resistant directly buried heat-insulating pipe. Background Technique

[0002] A directly buried heat-insulating pipe is a pipe buried underground for transporting media and is widely used in multiple fields.

[0003] Chinese Patent No. CN201521080221.0 discloses a directly buried heat-insulating pipe, which includes a working steel pipe, a polyethylene outer protective pipe, and a heat-insulating layer filled between the working steel pipe and the polyethylene outer protective pipe; the heat-insulating layer includes a nano-material heat-insulating layer connected to the outside of the working steel pipe and a polyurethane foam layer connected between the nano-material heat-insulating layer and the polyethylene outer protective pipe; several brackets for supporting the polyethylene outer protective pipe are arranged in the polyurethane foam layer; the brackets are two-dimensional spiral sheets.

[0004] In the process of using the prior art, since the heat-insulating material is relatively soft, when the pipe is bent or deformed during use, the heat-insulating material will be deformed, affecting the heat-insulating effect. Summary of the Invention

[0005] The purpose of the utility model is to provide a high-temperature resistant directly buried heat-insulating pipe to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a high-temperature resistant directly buried heat-insulating pipe, including a heat-insulating pipe; the heat-insulating pipe is composed of a pipe and a connecting pipe, connecting flanges are installed on both sides of the connecting pipe, and the connecting flanges are fixedly installed on both sides of the connecting pipe through bolts. The pipe is composed of an inner layer pipe, an outer layer pipe, and heat-insulating foam. The outer layer pipe is located outside the pipe, the inner layer pipe is located inside the pipe, and the heat-insulating foam is located between the inner layer pipe and the outer layer pipe. Support plates are arranged between the heat-insulating foams, and both ends of the support plates are installed on the inner side of the inner layer pipe and the outer side of the outer layer pipe.

[0007] Preferably, soft metal gaskets are arranged at both sides of the connecting pipe, and the soft metal gaskets are welded at both sides of the connecting pipe.

[0008] Preferably, insertion pipes are arranged at both ends of the pipe, and the insertion pipes are inserted into the connecting pipe.

[0009] Preferably, an internal corrosion-resistant layer is arranged inside the inner layer pipe, and the internal corrosion-resistant layer adheres to the inside of the inner layer pipe.

[0010] Preferably, an external anti-aging layer is arranged outside the outer layer pipe, and the external anti-aging layer is pasted on the outside of the outer layer pipe through an adhesive.

[0011] Preferably, the support plate is semicircularly arranged.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. During use, the heat-insulating foam can enhance the heat-insulating effect of the heat-insulating pipe and reduce the temperature influence inside and outside the heat-insulating pipe. During the use of the heat-insulating foam, the support plate supports the heat-insulating foam to prevent the heat-insulating pipe from being deformed due to pressure during use, thereby affecting the heat-insulating effect of the heat-insulating pipe;

[0014] 2. The setting of the insertion pipe is used to increase the contact area between the pipe and the connecting pipe, thereby increasing the sealing performance between the pipe and the connecting pipe;

[0015] 3. The internal corrosion-resistant layer has strong corrosion resistance, which can reduce the corrosion of the inner layer pipe during use and extend the service life of the inner layer pipe;

[0016] 4. The support plate is set to be semi-circular and has a certain elasticity. When it is deformed under pressure, it has a certain supporting performance and a buffering performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the pipe of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the pipe lamination of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the support plate of the present utility model.

[0022] In the figure: 1. Heat-insulating pipe; 2. Pipe; 3. Connecting pipe; 4. Connecting flange; 5. Insertion pipe; 6. Outer layer pipe; 7. Heat-insulating foam; 8. Inner layer pipe; 9. Support plate; 10. Internal corrosion-resistant layer; 11. External anti-aging layer; 12. Soft metal pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 In the embodiments of the present utility model, a high-temperature resistant directly buried heat-insulating pipe includes a heat-insulating pipe 1; the heat-insulating pipe 1 is composed of a pipe 2 and a connecting pipe 3. Connecting flanges 4 are installed on both sides of the connecting pipe 3, and the connecting flanges 4 are fixedly installed on both sides of the connecting pipe 3 through bolts. The pipe 2 is composed of an inner layer pipe 8, an outer layer pipe 6, and heat-insulating foam 7. The outer layer pipe 6 is located on the outside of the pipe 2, the inner layer pipe 8 is located on the inside of the pipe 2, and the heat-insulating foam 7 is located between the inner layer pipe 8 and the outer layer pipe 6. Support plates 9 are arranged between the heat-insulating foams 7, and both ends of the support plates 9 are installed on the inner side of the inner layer pipe 8 and the outer side of the outer layer pipe 6. The support plate 9 is semicircularly arranged. The support plate 9 is set to be semicircular, has a certain elasticity, has a certain supporting performance when deforming under pressure, and has a buffering performance.

[0025] Soft metal gaskets 12 are arranged on both sides of the connecting pipe 3, and the soft metal gaskets 12 are welded on both sides of the connecting pipe 3. The texture of the soft metal gaskets 12 is relatively soft. When installing the connecting flanges 4, the soft metal gaskets 12 will be compressed and deformed to fill the gap between the connecting flanges 4 and the connecting pipe 3, making the installation between the connecting pipe 3 and the connecting flanges 4 more stable and tight. Insert pipes 5 are arranged at both ends of the pipe 2, and the insert pipes 5 are inserted into the inside of the connecting pipe 3. The arrangement of the insert pipes 5 is used to increase the contact area between the pipe 2 and the connecting pipe 3, thereby increasing the sealing performance between the pipe 2 and the connecting pipe 3.

[0026] An internal corrosion-resistant layer 10 is arranged inside the inner layer pipe 8, and the internal corrosion-resistant layer 10 adheres to the inside of the inner layer pipe 8. The internal corrosion-resistant layer 10 has strong corrosion resistance, can reduce the corrosion of the inner layer pipe 8 during use, and extend the service life of the inner layer pipe 8. An external anti-aging layer 11 is arranged on the outside of the outer layer pipe 6, and the external anti-aging layer 11 is pasted on the outside of the outer layer pipe 6 through an adhesive. The external anti-aging layer 11 has anti-aging performance, can reduce the aging of the outer surface of the outer layer pipe 6, and extend the service life of the outer layer pipe 6.

[0027] Working principle and usage process of the present utility model: When the insulation pipe 1 is in use, first install the pipeline 2 between the connecting pipe 3 through bolts. During use, connect the insulation pipe 1. During the use of the insulation pipe 1, the heat insulation foam 7 can enhance the heat insulation effect of the insulation pipe 1 and reduce the temperature influence inside and outside the insulation pipe 1. During the use of the heat insulation foam 7, the support plate 9 supports the heat insulation foam 7 to prevent the insulation pipe 1 from being pressured during use, causing the heat insulation foam 7 to deform and thus affecting the heat insulation effect of the insulation pipe 1.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high temperature resistant direct buried thermal insulation pipe, comprising a thermal insulation pipe (1); characterized in that: The thermal insulation pipe (1) is composed of a pipe (2) and a connecting pipe (3), connecting flanges (4) are installed on both sides of the connecting pipe (3), and the connecting flanges (4) are fixedly installed on both sides of the connecting pipe (3) by bolts. The pipe (2) is composed of an inner layer pipe (8), an outer layer pipe (6) and thermal insulation foam (7), the outer layer pipe (6) is located on the outside of the pipe (2), the inner layer pipe (8) is located on the inside of the pipe (2), the thermal insulation foam (7) is located between the inner layer pipe (8) and the outer layer pipe (6), and a support plate (9) is arranged between the thermal insulation foam (7), and the two ends of the support plate (9) are installed on the inside of the inner layer pipe (8) and the outside of the outer layer pipe (6).

2. A high temperature resistant direct buried thermal insulation pipe according to claim 1, characterized in that: Soft metal pads (12) are provided at both sides of the connecting pipe (3), and the soft metal pads (12) are welded at both sides of the connecting pipe (3).

3. The high temperature resistant direct buried thermal insulation pipe according to claim 1, characterized in that: Insert pipes (5) are provided at both ends of the pipeline (2), and the insert pipes (5) are inserted into the interior of the connecting pipe (3).

4. The high temperature resistant direct buried thermal insulation pipe according to claim 1, characterized in that: An internal corrosion-resistant layer (10) is provided inside the inner layer tube (8), and the internal corrosion-resistant layer (10) is attached to the inside of the inner layer tube (8).

5. The high temperature resistant direct buried thermal insulation pipe according to claim 1, characterized in that: An external anti-aging layer (11) is provided on the outside of the outer tube (6), and the external anti-aging layer (11) is adhered to the outside of the outer tube (6) by means of an adhesive.

6. The high temperature resistant direct buried thermal insulation pipe according to claim 1, characterized in that: The support plate (9) is arranged in a semicircular shape.

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