Prefabricated direct-buried heat-insulating pipe

Abstract

The utility model discloses a prefabricated direct -buried heat preservation pipe is equipped with connecting assembly at each group pipe line subassembly connecting end, and connecting assembly is fixedly connected on pipe line subassembly, is equipped with the limit stop in pipe line subassembly inside, and limit stop is fixedly connected in pipe line subassembly inside, and pipe line subassembly includes first working steel pipe, first heat preservation layer, first protective layer, second working steel pipe, second heat preservation layer, second protective layer, and the outer side of first working steel pipe and second working steel pipe is equipped with limit stop, and limit stop is fixedly connected on first working steel pipe and second working steel pipe, can enhance the connection stability of polyurethane and working pipeline through limit stop, prevent long -term practical polyurethane and working pipeline's connection place bonding not closely, prevent the situation of polyurethane falling off, to prevent polyurethane from falling off, the possibility of heat preservation failure.

Description

Technical Field

[0001] This utility model relates to an insulation pipe, specifically a prefabricated direct-buried insulation pipe. Background Technology

[0002] The polyurethane insulated pipe consists of a three-layer structure: a working steel pipe layer, a polyurethane foam insulation layer, and a polyethylene protective shell, employing a pipe-in-pipe foaming process. This pipe features a leakage alarm system, heat loss is only 25% of traditional pipes, and a service life of 30-50 years.

[0003] In existing technologies, insulation pipes can suffer various types of damage over long-term use depending on the working environment. In particular, the polyurethane insulation layer and the working steel pipe layer may detach due to the working environment, resulting in a loss of insulation effect. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated direct-buried insulated pipe to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A prefabricated direct-buried insulated pipe is provided, wherein each set of pipe components is provided with a connecting component at the connection end, the connecting component is fixedly connected to the pipe component, and a limiting plate is provided inside the pipe component, the limiting plate is fixedly connected inside the pipe component, the pipe component includes a first working steel pipe, a first insulation layer, a first protective layer, a second working steel pipe, a second insulation layer, and a second protective layer, and a limiting plate is provided on the outer side of the first working steel pipe and the second working steel pipe, the limiting plate is fixedly connected to the first working steel pipe and the second working steel pipe.

[0006] As a further embodiment of this utility model: the outer sides of the first working steel pipe and the second working steel pipe are respectively coated with a first insulation layer and a second insulation layer, the first insulation layer and the second insulation layer are fixedly connected to the first working steel pipe and the second working steel pipe, and are also fixedly connected to the limiting plate.

[0007] As a further embodiment of this utility model, the thickness of the first insulation layer and the second insulation layer is greater than the length of the limiting plate.

[0008] As a further embodiment of this utility model: the first insulation layer and the second insulation layer are made of polyurethane sprayed onto the first working steel pipe and the second working steel pipe.

[0009] As a further embodiment of this utility model: a first protective layer and a second protective layer are wound around the outer sides of the first insulation layer and the second insulation layer.

[0010] As a further embodiment of this utility model: the first protective layer and the second protective layer are made of polyethylene wrapped around the first insulation layer and the second insulation layer.

[0011] As a further embodiment of this utility model: the connecting assembly includes a barrier layer, a connecting insulation layer, and a connecting protective layer. The connecting assembly is located at the connecting end of the pipeline assembly. A barrier layer is provided on the opposite side of the first insulation layer and the second insulation layer. The barrier layer is fixedly connected to the sides of the first insulation layer, the second insulation layer, the first protective layer, and the second protective layer. A connecting insulation layer is provided on the opposite side of the barrier layer. The connecting insulation layer is fixedly connected to the connection point of the first working steel pipe and the second working steel pipe. A connecting protective layer is provided on the outside of the connecting insulation layer. The connecting protective layer is fixedly connected to the outside of the connecting insulation layer.

[0012] As a further improvement of this utility model: a barrier layer is covered on the outer surface of the connecting protective layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The limiting plate can enhance the connection stability between the polyurethane and the working pipeline, prevent the connection between the polyurethane and the working pipeline from becoming loose after long-term use, and prevent the polyurethane from falling off, thus preventing the possibility of insulation failure after the polyurethane falls off. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a prefabricated direct-buried insulated pipe.

[0015] Figure 2 This is a cross-sectional structural diagram of a prefabricated direct-buried insulated pipe.

[0016] Figure 3 This is a schematic diagram of the internal structure of a prefabricated direct-buried insulated pipe. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3 In this embodiment of the utility model, a prefabricated direct-buried insulated pipe includes a first working steel pipe 101, a first insulation layer 102, a first protective layer 103, a second working steel pipe 201, a second insulation layer 202, a second protective layer 203, a barrier layer 301, a connecting insulation layer 302, a connecting protective layer 303, and a limiting plate 401.

[0019] Each set of pipe assembly connection ends is provided with a connection component, which is fixedly connected to the pipe assembly. The pipe assembly is provided with a limiting plate 401, which is fixedly connected to the inside of the pipe assembly.

[0020] The pipeline assembly includes a first working steel pipe 101, a first insulation layer 102, a first protective layer 103, a second working steel pipe 201, a second insulation layer 202, and a second protective layer 203. A limiting plate 401 is provided on the outer side of the first working steel pipe 101 and the second working steel pipe 201, and the limiting plate 401 is fixedly connected to the first working steel pipe 101 and the second working steel pipe 201.

[0021] The outer sides of the first working steel pipe 101 and the second working steel pipe 201 are respectively coated with a first insulation layer 102 and a second insulation layer 202. The first insulation layer 102 and the second insulation layer 202 are fixedly connected to the first working steel pipe 101 and the second working steel pipe 201, and are also fixedly connected to the limiting plate 401.

[0022] The thickness of the first insulation layer 102 and the second insulation layer 202 is greater than the length of the limiting plate 401.

[0023] The first insulation layer 102 and the second insulation layer 202 are made of polyurethane sprayed onto the first working steel pipe 101 and the second working steel pipe 201.

[0024] The first insulation layer 102 and the second insulation layer 202 are wrapped and connected to the outside of the first protective layer 103 and the second protective layer 203.

[0025] The first protective layer 103 and the second protective layer 203 are made of polyethylene wrapped around the first insulation layer 102 and the second insulation layer 202.

[0026] The connecting assembly includes a barrier layer 301, a connecting insulation layer 302, and a connecting protective layer 303. The connecting assembly is located at the connecting end of the pipeline assembly. A barrier layer 301 is provided on the opposite side of the first insulation layer 102 and the second insulation layer 202. The barrier layer 301 is fixedly connected to the side of the first insulation layer 102, the second insulation layer 202, the first protective layer 103, and the second protective layer 203. A connecting insulation layer 302 is provided on the opposite side of the barrier layer 301. The connecting insulation layer 302 is fixedly connected to the connection point of the first working steel pipe 101 and the second working steel pipe 201. A connecting protective layer 303 is provided on the outside of the connecting insulation layer 302. The connecting protective layer 303 is fixedly connected to the outside of the connecting insulation layer 302.

[0027] The outer surface of the connecting protective layer 303 is covered with a barrier layer 301.

[0028] The working principle of this utility model is as follows: During operation, the limiting plate 401 can enhance the connection stability between the polyurethane and the working pipeline, prevent the polyurethane from falling off due to long-term use, and prevent the insulation from failing.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated direct-buried insulated pipe, characterized in that, Each set of pipeline components is provided with a connecting component at the connection end. The connecting component is fixedly connected to the pipeline component. A limiting plate (401) is provided inside the pipeline component. The limiting plate (401) is fixedly connected inside the pipeline component. The pipeline component includes a first working steel pipe (101), a first insulation layer (102), a first protective layer (103), a second working steel pipe (201), a second insulation layer (202), and a second protective layer (203). A limiting plate (401) is provided on the outside of the first working steel pipe (101) and the second working steel pipe (201). The limiting plate (401) is fixedly connected to the first working steel pipe (101) and the second working steel pipe (201).

2. The prefabricated direct-buried insulated pipe according to claim 1, characterized in that, The first working steel pipe (101) and the second working steel pipe (201) are respectively coated with a first insulation layer (102) and a second insulation layer (202). The first insulation layer (102) and the second insulation layer (202) are fixedly connected to the first working steel pipe (101) and the second working steel pipe (201), and are also fixedly connected to the limiting plate (401).

3. A prefabricated direct-buried insulated pipe according to claim 1, characterized in that, The thickness of the first insulation layer (102) and the second insulation layer (202) is greater than the length of the limiting plate (401).

4. A prefabricated direct-buried insulated pipe according to claim 1, characterized in that, The first insulation layer (102) and the second insulation layer (202) are made of polyurethane sprayed onto the first working steel pipe (101) and the second working steel pipe (201).

5. A prefabricated direct-buried insulated pipe according to claim 1, characterized in that, The first insulation layer (102) and the second insulation layer (202) are wrapped with a first protective layer (103) and a second protective layer (203).

6. A prefabricated direct-buried insulated pipe according to claim 1, characterized in that, The first protective layer (103) and the second protective layer (203) are made of polyethylene wrapped around the first insulation layer (102) and the second insulation layer (202).

7. A prefabricated direct-buried insulated pipe according to claim 1, characterized in that, The connecting assembly includes a barrier layer (301), a connecting insulation layer (302), and a connecting protective layer (303). The connecting assembly is located at the connecting end of the pipeline assembly. A barrier layer (301) is provided on the opposite side of the first insulation layer (102) and the second insulation layer (202). The barrier layer (301) is fixedly connected to the side of the first insulation layer (102), the second insulation layer (202), the first protective layer (103), and the second protective layer (203). A connecting insulation layer (302) is provided on the opposite side of the barrier layer (301). The connecting insulation layer (302) is fixedly connected to the connection point of the first working steel pipe (101) and the second working steel pipe (201). A connecting protective layer (303) is provided on the outside of the connecting insulation layer (302). The connecting protective layer (303) is fixedly connected to the outside of the connecting insulation layer (302).

8. A prefabricated direct-buried insulated pipe according to claim 1, characterized in that, A barrier layer (301) is covered on the outer surface of the connecting protective layer (303).

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