Prefabricated directly-buried thermal insulation pipe and preparation process thereof

Abstract

The prefabricated directly-buried thermal insulation pipe comprises a pipeline A, a connecting piece B and a connecting piece B. The pipeline A is composed of a protective layer, an outer pipe, a thermal insulation layer, a reinforcing net, a thermal insulation material, reinforcing strips and an inner pipe, the outer pipe is arranged in the protective layer, the thermal insulation layer is arranged in the outer pipe, the reinforcing net is connected into the thermal insulation layer, and the reinforcing net is connected into the thermal insulation material. A reinforcing net is arranged in the pipeline A, a heat preservation material is arranged in the reinforcing net, an inner pipe is arranged in the heat preservation material, reinforcing strips are arranged on the outer surface of the inner pipe, a connecting piece B is arranged outside the pipeline A, and a connecting piece B is movably connected outside the pipeline A. Through the arrangement of the reinforcing strips, the overall strength of the inner pipe is improved, the connecting area of polyurethane foam and the inner pipe is increased, the risk of separation of the polyurethane foam is reduced, the connecting piece B is rotated to enable a threaded hole in the connecting piece B to be aligned with a mounting bolt on the connecting piece A, and therefore the connecting piece A and the connecting piece B can be conveniently connected, and pipeline adjustment is avoided.

Description

Technical Field

[0001] The invention relates to the field of thermal insulation pipes, and in particular to a prefabricated direct-buried thermal insulation pipe and a preparation process thereof. Background Art

[0002] Prefabricated direct buried insulated pipes are widely used in industrial production to transport high-temperature media, such as steam, hot water, hot oil, etc. The pipe can also be used to transport cooling media, such as cold water, cold oil, etc. The insulation layer of the prefabricated direct buried insulated pipe is made of high-quality insulation materials, such as polyurethane, glass wool, density board, etc., which can effectively prevent energy loss and reduce energy consumption in high temperature environments. The outer layer of the prefabricated direct buried insulated pipe is made of anti-corrosion coating or anti-corrosion material, which can effectively resist erosion by oxidation, corrosion and other factors, and extend the service life of the pipe.

[0003] The existing device will encounter the following problems when in use: welding between pipes is difficult, and the welds need to be protected after welding. However, after the pipes are fixedly connected by welding, the pipes cannot be adjusted, which increases the difficulty of installing the protective structure. Secondly, the insulation material filled inside the pipes is prone to breakage, resulting in reduced insulation effect. Summary of the invention

[0004] The object of the present invention is to provide a prefabricated direct-buried thermal insulation pipe and a preparation process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prefabricated direct-buried thermal insulation pipe, comprising a pipe A, a connector B, and a connector B, wherein the pipe A is composed of a protective layer, an outer pipe, a thermal insulation layer, a reinforcing net, a thermal insulation material, a reinforcing strip, and an inner pipe, wherein the outer pipe is arranged inside the protective layer, and the wear of the outer surface of the outer pipe is reduced by the provision of the protective layer, thereby improving the protective effect, and the thermal insulation layer is arranged inside the outer pipe, and the interior of the thermal insulation layer is connected to a reinforcing net, and the provision of the reinforcing net prevents the polyurethane foam from being broken due to pressure, thereby reducing the use effect of the polyurethane foam, and The reinforcing net is provided with a heat-insulating material, an inner tube is provided inside the heat-insulating material, and a reinforcing strip is provided on the outer surface of the inner tube. The reinforcing strip is provided to improve the overall strength of the inner tube, increase the connection area between the polyurethane foam and the inner tube, and reduce the risk of polyurethane foam detachment. A connector B is provided outside the pipeline A, and the pipeline A is movably connected to the connector B outside. One end of the pipeline A is connected to a welding piece B, and one side of the welding piece B is welded to a welding piece A, and one side of the welding piece A is connected to the pipeline B. The welding piece A is aligned with the welding piece B and then welded.

[0006] In a further embodiment, a connecting pipe is provided inside the pipeline B, one end of which extends into the pipeline A, and the internal structures of the pipeline A8 and the pipeline B19 are the same.

[0007] In a further embodiment, slots are provided on both sides of the interior of the connector B, and a limit block is arranged inside the slot. A connecting bolt is rotatably connected to one side of the limit block, and the connecting bolt is threadably connected to the connector B. The limit block is arranged in an arc shape, and an anti-slip layer is arranged at the bottom of the limit block. Rotating the connecting bolt drives the limit block to fit tightly against the outer side of the pipe A, thereby enhancing the stability of the connector B.

[0008] In a further embodiment, a connector A is provided outside the pipeline B, a mounting bolt is provided on the connector A, the mounting bolt is threadedly connected to the connector B, and the connector A is connected to the connector B by the mounting bolt.

[0009] In a further embodiment, the thermal insulation material is made of polyurethane foam, and the material of the reinforcement strip is set to PVC material, so as to improve the coordination between the reinforcement strip and the thermal insulation material and increase the thermal insulation effect.

[0010] In a further embodiment, a groove is provided on one side of the connector B, and the pipe A is movably connected in the groove, so that the connector B can be rotated on the outside of the pipe A, so that the threaded hole on the connector B can cooperate with the installation bolt for connection.

[0011] A preparation process of a prefabricated direct-buried thermal insulation pipe comprises the following steps: S1. Selection of raw materials: Select the material of the inner pipe of the pipeline and the material of insulation; S2. Pipeline processing: Process the inner and outer pipes into the required sizes; S3, application of insulation layer: filling the insulation layer between the inner tube and the outer tube; S4. Installation of accessories: install accessories on the filled pipes according to design requirements.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The provision of the reinforcing strip improves the overall strength of the inner tube, increases the connection area between the polyurethane foam and the inner tube, reduces the risk of polyurethane foam detachment, and improves the thermal insulation effect of the tube body.

[0013] Rotate connector B so that the threaded hole on connector B is aligned with the mounting bolt on connector A, thereby facilitating the connection of connector A with connector B, avoiding the need to adjust the pipeline, improving the flexibility of installation, and increasing the efficiency of connection. Rotate the connecting bolt to drive the limit block to fit tightly against the outside of pipeline A, thereby enhancing the stability of connector B and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the reinforcing strip structure of the present invention.

[0015] Figure 5 It is a schematic diagram of the local structure of the present invention.

[0016] In the figure: 1. Protective layer; 2. Outer pipe; 3. Insulation layer; 4. Reinforcement net; 5. Insulation material; 6. Reinforcement strip; 7. Inner pipe; 8. Pipeline A; 9. Connecting pipe; 10. Connector A; 11. Mounting bolt; 12. Welding part A; 13. Welding part B; 14. Groove; 15. Connector B; 16. Notch; 17. Limit block; 18. Connecting bolt; 19. Pipeline B. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] See also Figure 1-2 , an embodiment provided by the present invention: a prefabricated direct-buried thermal insulation pipe, comprising a pipe A8, a connector B15, and a connector B15, wherein the pipe A8 is composed of a protective layer 1, an outer pipe 2, an insulation layer 3, a reinforcing net 4, an insulation material 5, a reinforcing strip 6, and an inner pipe 7. The outer pipe 2 is arranged inside the protective layer 1, and the wear of the outer surface of the outer pipe 2 is reduced by the provision of the protective layer 1, thereby improving the protection effect. The insulation layer 3 is arranged inside the outer pipe 2, and the insulation layer 3 is connected to the reinforcing net 4 inside. The reinforcing net 4 is provided to prevent the polyurethane foam from being broken due to pressure, thereby reducing the use effect of the polyurethane foam. The insulation material 5 is arranged inside the reinforcing net 4, and the inner pipe 7 is arranged inside the insulation material 5. The outer surface of the inner pipe 7 is provided with a reinforcing strip 6, and the insulation material 5 is made of polyurethane foam. The material of the reinforcing strip 6 is set to PVC material, and the polyurethane foam is filled outside the inner pipe 7. The overall strength of the inner pipe 7 is improved by the provision of the reinforcing strip 6, and the connection area between the polyurethane foam and the inner pipe 7 is increased, thereby reducing the risk of polyurethane foam detachment.

[0019] See also Figure 1-4, a connecting piece B15 is arranged outside the pipeline A8, and the connecting piece B15 is movably connected outside the pipeline A8, one end of the pipeline A8 is connected to a welding piece B13, and one side of the welding piece B13 is welded to a welding piece A12, and the welding piece A12 is aligned with the welding piece B13 and then welded, so as to connect the pipeline A8 and the pipeline B19, and one side of the welding piece A12 is connected to the pipeline B19, and a connecting pipe 9 is arranged inside the pipeline B19, and one end of the connecting pipe 9 extends into the pipeline A8, and the internal structures of the pipelines A8 and B19 are the same, and the connecting pipe 9 in the pipeline B19 is inserted into the pipeline A 8, a connecting piece A10 is arranged outside the pipeline B19, a mounting bolt 11 is arranged on the connecting piece A10, the mounting bolt 11 is threadedly connected with the connecting piece B15, a groove 14 is opened on one side of the connecting piece B15, the pipeline A8 is movably connected in the groove 14, the connecting piece B15 is pulled to receive the welded parts A12 and B13 into the groove 14, and the connecting piece B15 is rotated so that the threaded hole on the connecting piece B15 is aligned with the mounting bolt 11 on the connecting piece A10, so as to facilitate the connection of the connecting piece A10 and the connecting piece B15, avoid adjusting the pipeline, and improve the efficiency of installation.

[0020] See also Figure 3-5 Notches 16 are provided on both sides of the interior of the connector B15, and a limit block 17 is provided inside the notch 16. A connecting bolt 18 is rotatably connected to one side of the limit block 17, and the connecting bolt 18 is threadedly connected to the connector B15. The limit block 17 is arranged in an arc shape, and an anti-slip layer is arranged at the bottom of the limit block 17. Rotating the connecting bolt 18 drives the limit block 17 to be close to the outer side of the pipe A8, thereby enhancing the stability of the connector B15.

[0021] A preparation process of a prefabricated direct-buried thermal insulation pipe comprises the following steps: S1. Selection of raw materials: Select the material of the inner pipe of the pipeline and the material of insulation; S2. Pipeline processing: Process the inner and outer pipes into the required sizes; S3, application of insulation layer: filling the insulation layer between the inner tube and the outer tube; S4. Installation of accessories: install accessories on the filled pipes according to design requirements.

[0022] Working principle: The protective layer 1 is provided to reduce the wear of the outer surface of the outer tube 2 and improve the protection effect. The polyurethane foam is filled outside the inner tube 7. The reinforcement strip 6 is provided to improve the overall strength of the inner tube 7, increase the connection area between the polyurethane foam and the inner tube 7, and reduce the risk of polyurethane foam detachment. The reinforcement net 4 is provided to prevent the polyurethane foam from being broken due to pressure, thereby reducing the use effect of the polyurethane foam. Insert the connecting pipe 9 in the pipeline B19 into the pipeline A8, align the welding piece A12 with the welding piece B13 and then weld them. At this time, pull the connecting piece B15 to put the welded welding piece A12 and the welding piece B13 into the groove 14, rotate the connecting piece B15 so that the threaded hole on the connecting piece B15 is aligned with the mounting bolt 11 on the connecting piece A10, so as to facilitate the connection of the connecting piece A10 with the connecting piece B15 and avoid adjusting the pipeline. Rotate the connecting bolt 18 to drive the limit block 17 to be close to the outside of the pipeline A8, thereby enhancing the stability of the connecting piece B15.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A prefabricated direct-buried thermal insulation pipe, comprising a pipe A (8), a connector B (15), and a connector B (15), characterized in that: The pipeline A (8) comprises a protective layer (1), an outer tube (2), a thermal insulation layer (3), a reinforcing net (4), a thermal insulation material (5), a reinforcing strip (6), and an inner tube (7); the outer tube (2) is arranged inside the protective layer (1); the thermal insulation layer (3) is arranged inside the outer tube (2); the reinforcing net (4) is connected to the interior of the thermal insulation layer (3); the thermal insulation material (5) is arranged inside the reinforcing net (4); the inner tube (7) is arranged inside the thermal insulation material (5); the outer surface of the inner tube (7) is provided with a reinforcing strip (6); a connecting piece B (15) is arranged outside the pipeline A (8); the connecting piece B (15) is movably connected outside the pipeline A (8); one end of the pipeline A (8) is connected to a welding piece B (13); one side of the welding piece B (13) is welded to a welding piece A (12); one side of the welding piece A (12) is connected to the pipeline B (19).

2. The prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: A connecting pipe (9) is provided inside the pipeline B (19), one end of the connecting pipe (9) extends into the pipeline A (8), and the internal structures of the pipeline A (8) and the pipeline B (19) are the same.

3. The prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: Notches (16) are provided on both sides of the interior of the connecting member B (15), and a limit block (17) is provided inside the notch (16). A connecting bolt (18) is rotatably connected to one side of the limit block (17), and the connecting bolt (18) is threadedly connected to the connecting member B (15). The limit block (17) is arranged in an arc shape, and an anti-slip layer is provided at the bottom of the limit block (17).

4. The prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: A connecting piece A (10) is disposed outside the pipe B (19), a mounting bolt (11) is disposed on the connecting piece A (10), and the mounting bolt (11) is threadedly connected to the connecting piece B (15).

5. The prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: The thermal insulation material (5) is made of polyurethane foam, and the material of the reinforcement strip (6) is set to be PVC material.

6. The prefabricated direct-buried thermal insulation pipe according to claim 1, characterized in that: A groove (14) is provided on one side of the connecting piece B (15), and a pipe A (8) is movably connected in the groove (14).

7. A preparation process for a prefabricated direct-buried thermal insulation pipe, characterized in that: A prefabricated direct-buried thermal insulation pipe according to any one of claims 1 to 6, comprising the following steps: S1. Selection of raw materials: Select the material of the inner pipe of the pipeline and the material of insulation; S2. Pipeline processing: Process the inner and outer pipes into the required sizes; S3, application of insulation layer: filling the insulation layer between the inner tube and the outer tube; S4. Installation of accessories: install accessories on the filled pipes according to design requirements.

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