Joint coating structure for thermal insulation pipe

Abstract

The utility model discloses a joint coating structure for a thermal insulation pipe, which belongs to the technical field of thermal insulation pipes and comprises a joint coating shell, a shell connecting mechanism, a sealing gasket, a first outer protective pipe and a second outer protective pipe. The joint coating shell comprises a first shell and a second shell, and the end parts of the first shell and the second shell are in butt joint; the shell connecting mechanism comprises connecting pieces and limiting pieces, the connecting pieces are arranged on the side portions of the first shell and the second shell, the limiting pieces are arranged on the connecting pieces, and the first shell and the second shell are connected through the limiting pieces and the connecting pieces; the first outer protection pipe and the second outer protection pipe are located on the inner side of the sealing gasket, a first heat preservation layer is arranged on the inner side of the first outer protection pipe, and a second heat preservation layer is arranged on the inner side of the second outer protection pipe. The sealing device can guarantee the sealing performance of the joint position of the thermal insulation pipe, is suitable for thermal insulation pipes made of different materials, improves the construction efficiency, and guarantees the thermal insulation effect of the thermal insulation pipe.

Description

Technical Field

[0001] This utility model belongs to the field of thermal insulation pipe technology, specifically relating to a joint structure for thermal insulation pipes. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In recent years, prefabricated direct-buried insulated pipes have been widely used in primary heating network systems due to their convenient construction and good energy-saving and corrosion-resistant effects. During pipeline construction, there will be a certain gap between the insulation layers at the two ends of the two pipes after installation. To ensure the insulation effect of the entire pipeline, the joint is treated after the working steel pipes are butt-welded or socket-installed.

[0004] Currently, conventional thermal insulation pipes are joined using electrofusion tape or hot-melt shrinkable tape, and then the insulation layer is filled using an on-site foaming machine. After filling, the filling holes are sealed. Currently, the outer layer of the insulation pipe joint is only sealed and insulated by an outer protective pipe. However, there are significant differences between different types of outer protective pipe materials, and electrofusion or hot-melt shrinkable tape cannot cover all types of outer protective pipe materials. Furthermore, the method of achieving sealing and insulation using electrofusion or hot-melt shrinkable outer protective pipes has problems such as poor joint adhesion, poor sealing effect, high construction requirements, and low efficiency when used for insulation pipe joint treatment, thus greatly reducing the efficiency and insulation effect of the insulation pipe during construction. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a jointing structure for insulation pipes, which can ensure the sealing of the joints of the insulation pipes and is applicable to insulation pipes of different materials, thereby improving construction efficiency and ensuring the insulation effect of the insulation pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A jointing structure for an insulated pipe includes a jointing shell, a shell connecting mechanism, a sealing gasket, a first outer protective tube, and a second outer protective tube. The jointing shell includes a first shell and a second shell, with their ends joined together. The shell connecting mechanism includes a connector and a limiting member. The connector is provided on the side of the first shell and the second shell, and the limiting member is provided on the connector. The limiting member and the connector connect the first shell and the second shell. The first outer protective tube and the second outer protective tube are located inside the sealing gasket. A first insulation layer is provided inside the first outer protective tube, and a second insulation layer is provided inside the second outer protective tube.

[0008] Furthermore, the limiting component includes a threaded screw and a sleeve nut. The connecting part of the first outer shell and the second outer shell is provided with a threaded hole, in which a threaded screw is provided, and at the end of the threaded screw is a sleeve nut.

[0009] Furthermore, at the junction of the first outer shell and the second outer shell, the first outer shell and the second outer shell are semi-circular shells.

[0010] Furthermore, the lower end of the first outer shell and the upper end of the second outer shell are joined together, forming a circular cavity after the first outer shell and the second outer shell are joined together, and the joint position of the first pipe and the second pipe is located inside the circular cavity.

[0011] Furthermore, a sealing gasket is provided on the inner surface of the first and second outer shells, and the sealing gasket is in contact with the inner surface of the first and second outer shells.

[0012] Furthermore, the connector of the first housing is connected to the outer surface of the first housing.

[0013] Furthermore, several connectors are spaced apart on the first housing, and threaded holes are provided on the connectors of the first housing.

[0014] Furthermore, the connector of the second housing is connected to the outer surface of the second housing.

[0015] Furthermore, several connecting parts of the second housing are spaced apart, and threaded holes are provided on the connecting parts of the second housing.

[0016] Furthermore, the first outer shell is provided with a foaming area, and the foaming area is symmetrically provided with circular holes.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are:

[0018] This utility model features an outer protective tube and insulation layer that fit tightly against the outer surface of the pipe. The first and second outer shells are then aligned at the pipe joint. After mating, the first and second outer shells are connected using limiting and connecting components, and then sealed with an embedded rubber sealing gasket. A threaded rod and sleeve nut are used to fix the first and second outer protective tubes together, ensuring a tight seal at the joint. This design is suitable for insulation pipes of different materials, eliminating the need to consider pipe material. The seal is guaranteed simply by the first and second outer shells and the sealing ring, perfectly solving problems such as poor jointing and poor sealing. This significantly improves the efficiency and insulation effect during construction. Furthermore, the connection between the first and second outer shells via the threaded rod, sleeve nut, and limiting components ensures high installation efficiency, thereby improving overall construction efficiency and guaranteeing the insulation effect of the insulation pipe. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a front view of the patching device of this utility model;

[0021] Figure 2 This is a side view of the patching device of this utility model;

[0022] In the diagram: 1-First pipe, 2-First insulation layer, 3-First outer protective pipe, 4-First outer shell, 5-Second outer shell, 6-Connector, 7-Limiting component, 8-Threaded screw, 9-Sealing gasket, 10-Sleeve nut, 11-Second pipe, 12-Second insulation layer, 13-Second outer protective pipe, 14-Outer shell connection mechanism, 15-Foaming area. Detailed Implementation

[0023] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] The present invention will be described in detail below with reference to the accompanying drawings. This embodiment discloses a joint structure for a heat-insulating pipe, such as... Figure 1 As shown, the device includes a patch shell, a shell connecting mechanism 14, a sealing gasket 9, a first outer protective tube 3, and a second outer protective tube 13. The patch shell includes a first shell 4 and a second shell 5, with their ends joined together. The shell connecting mechanism 14 includes a connector 6 and a limiting member 7. The connector 6 is provided on the side of the first shell 4 and the second shell 5, and the limiting member 7 is provided on the connector 6. The limiting member 7 and the connector 6 connect the first shell 4 and the second shell 5. The first outer protective tube 3 and the second outer protective tube 13 are located inside the sealing gasket 9. A first insulation layer 2 is provided inside the first outer protective tube 3, and a second insulation layer 12 is provided inside the second outer protective tube 13.

[0025] The outer protective tube and insulation layer are tightly attached to the outer surface of the pipe. Then, the first outer shell 4 and the second outer shell 5 are aligned at the joint position of the pipe. After the alignment, the first outer shell 4 and the second outer shell 5 are connected by the limiting member 7 and the connecting member 6. Then, the inner rubber sealing gasket 9 is used for sealing. The threaded rod 8 and the sleeve nut 10 are fixed between the first outer protective tube 3 and the second outer protective tube 13 to ensure the sealing of the joint position of the insulation pipe.

[0026] The limiting component 7 includes a threaded rod 8 and a sleeve nut 10. A threaded hole is provided on the connecting piece 6 of the first outer shell 4 and the second outer shell 5, and the threaded rod 8 is installed inside the threaded hole. The sleeve nut 10 is installed at the end of the threaded rod 8. During installation, the threaded rod 8 is screwed into the threaded hole on the connecting piece 6 of the first outer shell 4 and the second outer shell 5. After screwing it in, the sleeve nut 10 is screwed onto the threaded rod 8, so that the lower surface of the sleeve thread is tightly against the surface of the connecting piece 6, thereby connecting the first outer shell 4 and the second outer shell 5.

[0027] like Figure 2 As shown, the connector 6 of the first outer shell 4 is connected to the outer surface of the first outer shell 4. Several connectors 6 of the first outer shell 4 are spaced apart, and each connector 6 has a threaded hole. The connector 6 of the second outer shell 5 is connected to the outer surface of the second outer shell 5. Several connectors 6 of the second outer shell 5 are spaced apart, and each connector 6 has a threaded hole. The first outer shell 4 and the second outer shell 5 are semi-circular shells at the joint position of the first pipe 1 and the second pipe 11. The lower end of the first outer shell 4 and the upper end of the second outer shell 5 are joined together, forming a circular cavity. The joint position of the first pipe 1 and the second pipe 11 is located within this circular cavity. A sealing gasket 9 is provided on the inner surface of the first outer shell 4 and the second outer shell 5, and the sealing gasket 9 is in contact with the inner surface of the first outer shell 4 and the second outer shell 5. The sealing gasket 9 is made of EPDM and mainly serves a sealing function.

[0028] The first outer shell 4 has a foaming area 15, on which symmetrical circular holes are arranged. Two circular holes are provided, both of which penetrate the outer protective tube. One circular hole is used to inject foaming material into the gap between the outer protective tube and the pipe, and the other circular hole is used for venting. After the injection is completed, a foam insulation layer is formed, which, together with the first insulation layer 2 and the second insulation layer 12, ensures the insulation effect of the insulated pipe.

[0029] Usage: After the first pipe 1 and the second pipe 11 are welded together, install the outer shell connecting mechanism 14 onto the first outer shell 4 and the second outer shell 5 according to the slot positions on the second outer shell 4 and the second outer shell 5 respectively. Use the second outer shell 5 as the bottom shell, and install the first outer protective tube 3 and the second outer protective tube 13 into the joint area, leaving a distance of 200mm between the first outer protective tube 3 and the second outer protective tube 13 to ensure better insulation effect; then install the second outer shell 5, leaving 100mm at each end of the second outer shell 5 as installation positions; then install the first outer shell 4 into the designated position in the joint area, with the installation positions of the first outer shell 4 and the second outer shell 5 corresponding vertically; then check whether the position of the sealing gasket 9 is offset, and check the fit of the sealing gasket 9 with the first outer protective tube 3 and the second outer protective tube 13. The sealing gasket 9 should fit tightly with the first outer protective tube 3 and the second outer protective tube 13 without gaps. Then connect the first outer shell 4 and the second outer shell 5 through the threaded rod 8 and the sleeve nut 10 of the connector 6, and then tighten the connector 6 diagonally in sequence to better ensure the sealing effect.

[0030] Two holes are provided in the foaming area 15, one hole as an injection hole and the other hole as an exhaust hole. Isocyanate and polyether polyol are used as foaming raw materials, and a catalyst is added to them. Then, the foaming material is sprayed into the cavity between the first pipe 1 and the second pipe 11 and the first outer protective pipe 3 and the second outer protective pipe 13 through a foaming spraying device to form a foam insulation layer.

[0031] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A jointing structure for a thermal insulation pipe, characterized in that, The device includes a patch shell, a shell connecting mechanism, a sealing gasket, a first outer protective tube, and a second outer protective tube. The patch shell comprises a first shell and a second shell, with their ends joined together. The shell connecting mechanism includes a connector and a limiting member. The connector is provided on the side of the first shell and the second shell, and the limiting member is provided on the connector. The limiting member and the connector connect the first shell and the second shell. The first outer protective tube and the second outer protective tube are located inside the sealing gasket. A first insulation layer is provided inside the first outer protective tube, and a second insulation layer is provided inside the second outer protective tube.

2. The jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The limiting component includes a threaded screw and a sleeve nut. The connecting part of the first outer shell and the second outer shell is provided with a threaded hole, and a threaded screw is provided in the threaded hole. A sleeve nut is provided at the end of the threaded screw.

3. The jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The first outer shell and the second outer shell are located at the junction of the first pipe and the second pipe, and the first outer shell and the second outer shell are semi-circular shells.

4. The jointing structure for a thermal insulation pipe as described in claim 3, characterized in that, The lower end of the first outer shell and the upper end of the second outer shell are joined together, forming a circular cavity. The joint position of the first pipe and the second pipe is located inside the circular cavity.

5. A jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, A sealing gasket is provided on the inner surface of the first and second outer shells, and the sealing gasket is in contact with the inner surface of the first and second outer shells.

6. The jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The connector of the first housing is connected to the outer surface of the first housing.

7. A jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The first housing has several connecting parts spaced apart, and the connecting parts of the first housing have threaded holes.

8. A jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The connector of the second housing is connected to the outer surface of the second housing.

9. A jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The second housing has several connecting parts spaced apart, and the connecting parts of the second housing have threaded holes.

10. A jointing structure for a thermal insulation pipe as described in claim 1, characterized in that, The first outer shell has a foaming area, and the foaming area has symmetrically arranged circular holes.

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