A heat preservation tube

Abstract

The utility model belongs to the technical field of the heat preservation pipe, concretely relates to a heat preservation pipe, including inner tube and the outer tube of setting up on inner tube, be provided with the heat preservation layer between inner tube and outer tube, the inner wall of outer tube is provided with at least one first protruding and at least one annular protruding, the end of first protruding and the side of annular protruding are connected, the side of first protruding and the side of annular protruding all embed into the heat preservation layer, the end of inner tube forms the connecting area outwardly extending. The utility model can enhance the pressure resistance of outer tube through setting up first protruding and annular protruding on the inner wall of outer tube, and can play a limiting effect to heat preservation layer, so that heat preservation layer is not easy to separate from the pipe, and the heat preservation effect of heat preservation pipe is guaranteed.

Description

Technical Field

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

[0002] Thermal insulation pipe is short for heat-insulated pipeline. It is used for the transportation of liquids, gases and other media. It is used in thermal insulation projects for pipelines in petroleum, chemical, aerospace, district heating, central air conditioning, municipal and other industries. Thermal insulation pipe is suitable for transporting various media in the range of -50℃ to 150℃. It is widely used in district heating, cooling and hot oil transportation, as well as thermal insulation and cold preservation projects in industries such as greenhouses, cold storage, coal mines, petroleum, and chemical industries.

[0003] Existing insulation pipes only focus on the insulation effect during design, but neglect the protection of external pipes. Once the external pipes are squeezed, they are easily deformed, which changes the structure of the insulation layer and reduces the insulation effect.

[0004] Therefore, there is an urgent need to propose a new technical solution to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an insulation pipe that addresses the shortcomings of existing technology by providing a first protrusion and an annular protrusion on the inner wall of the outer pipe. This enhances the pressure resistance of the outer pipe and also limits the insulation layer, making it less likely to detach from the pipe and ensuring the insulation effect of the insulation pipe.

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

[0007] An insulated pipe includes an inner pipe and an outer pipe sleeved on the inner pipe. An insulation layer is provided between the inner pipe and the outer pipe. The inner wall of the outer pipe is provided with at least one first protrusion and at least one annular protrusion. The end of the first protrusion and the side of the annular protrusion are connected. The side of the first protrusion and the side of the annular protrusion are both embedded in the insulation layer. The end of the inner pipe extends outward to form a connection area.

[0008] Preferably, the inner wall of the outer tube has at least one first vertical groove, the side of the insulation layer has a second protrusion that matches the first vertical groove, and a plurality of the annular protrusions pass through the first vertical groove and form a plurality of limiting areas with the plurality of the first protrusions.

[0009] Preferably, the outer wall of the inner tube has at least one third protrusion, the side of which is embedded in the insulation layer.

[0010] Preferably, the outer wall of the inner tube has at least one first annular groove, and the side of the insulation layer has a fourth protrusion that matches the first annular groove.

[0011] Preferably, the outer wall of the inner tube has at least one second vertical groove, and the side of the insulation layer has a fifth protrusion that matches the second vertical groove.

[0012] Preferably, the second vertical groove is connected to the first annular groove, and the depth of the first annular groove is less than the depth of the second vertical groove.

[0013] Preferably, the outer wall of the inner tube has at least one second annular groove, and the side of the insulation layer has a sixth protrusion that matches the second annular groove.

[0014] Preferably, the second annular groove is disposed between two adjacent first annular grooves, and the depth of the second annular groove is less than the depth of the first annular groove.

[0015] Preferably, the second vertical groove is connected to the second annular groove, and the depth of the second annular groove is less than the depth of the second vertical groove.

[0016] Preferably, the insulation layer is an insulation adhesive, which is filled between the inner tube and the outer tube.

[0017] The beneficial effects of this utility model are as follows: This utility model includes an inner tube and an outer tube sleeved on the inner tube. The inner tube is a conveying tube, and the outer tube is a protective tube. The outer tube can protect the inner tube and prevent it from being crushed by external objects. A heat insulation layer is provided between the inner tube and the outer tube. The heat insulation layer is heat insulation adhesive, which is filled between the inner tube and the outer tube. The heat insulation adhesive can be heat insulation foam. The inner wall of the outer tube is provided with at least one first protrusion and at least one annular protrusion. The end of the first protrusion is connected to the side of the annular protrusion. The first protrusion extends along the length of the outer tube. The outer tube extends outwards, with the first protrusion and the annular protrusion interlocking to form an arched mesh structure, acting as a support to hold the inner wall of the outer tube in place. This allows the outer tube to better withstand external pressure, thus providing better protection for the inner tube. The sides of both the first and annular protrusions are embedded in the insulation layer, preventing it from detaching from the outer tube. The end of the inner tube extends outwards to form a connection area, facilitating connection between the inner tube and other inner tubes, pipes, or equipment. This invention, by incorporating the first and annular protrusions on the inner wall of the outer tube, enhances the outer tube's pressure resistance and limits the insulation layer, preventing it from detaching from the pipes and ensuring the insulation effect of the insulated pipe. Attached Figure Description

[0018] Figure 1This is one of the cross-sectional views of this utility model.

[0019] Figure 2 This is a schematic diagram of the inner and outer tubes of this utility model.

[0020] Figure 3 This is the second sectional view of the present invention.

[0021] Figure 4 This is a cross-sectional view of the inner and outer tubes of this utility model.

[0022] Figure 5 This is a schematic diagram of the outer tube of this utility model.

[0023] Figure 6 This is a schematic diagram of the inner tube structure of this utility model.

[0024] Figure 7 This is a cross-sectional view of the inner tube of this utility model.

[0025] Wherein: 1. Inner tube; 11. Connecting area; 12. Third protrusion; 13. First annular groove; 14. Second vertical groove; 15. Second annular groove; 2. Outer tube; 21. First protrusion; 22. Annular protrusion; 23. First vertical groove; 24. Limiting area; 3. Insulation layer; 31. Second protrusion; 32. Fourth protrusion; 33. Fifth protrusion; 34. Sixth protrusion; D1. Depth of the second vertical groove; D2. Depth of the first annular groove; D3. Depth of the second annular groove. Detailed Implementation

[0026] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." In this utility model, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The following is in conjunction with the appendix Figures 1-7 The present invention will be further described in detail with reference to specific embodiments, but this is not intended to limit the present invention.

[0028] Example 1

[0029] An insulated pipe includes an inner pipe 1 and an outer pipe 2 sleeved on the inner pipe 1. The inner pipe 1 is a conveying pipe, and the outer pipe 2 is a protective pipe. The outer pipe 2 protects the inner pipe 1 from rupture caused by external pressure. The inner pipe 1 is a plastic pipe with a diameter of 315mm and a thickness of 17mm, and the outer pipe 2 is a plastic pipe with a diameter of 400mm and a thickness of 26mm. The plastic pipe is specifically a high-density polyethylene pipe, which has stronger corrosion resistance, connection reliability, and impact resistance compared to traditional steel pipes. It is also lighter, has a shorter welding time, resulting in higher construction efficiency, and greater toughness. Better and more rigid, the material is also environmentally friendly, meeting drinking water standards. Its high strength and high toughness make it suitable for complex environments; steel pipes are prone to deformation and internal rusting, while high-density polyethylene pipes have better chemical properties, possessing advantages such as high mechanical strength, high chemical resistance, low-temperature resistance, and moisture resistance. An insulation layer 3 is installed between the inner pipe 1 and the outer pipe 2. The insulation layer 3 is made of insulating adhesive and is installed between the inner pipe 1 and the outer pipe 2 by filling. The insulating adhesive can be insulating foam. The inner wall of the outer pipe 2 has at least one first protrusion 21 and... One annular protrusion 22 is missing. The end of the first protrusion 21 is connected to the side of the annular protrusion 22. The first protrusion 21 extends along the length of the outer tube 2. The first protrusion 21 and the annular protrusion 22 are interlocked to form an arched mesh structure, which acts as a support to support the inner wall of the outer tube 2, allowing the outer tube 2 to better withstand external pressure, thus providing better protection for the inner tube 1. The sides of the first protrusion 21 and the annular protrusion 22 are embedded in the insulation layer 3. This arrangement prevents the insulation layer 3 from detaching from the outer tube 2. The inner tube 1 is detached from the outer tube, and its end extends outward to form a connecting area 11. The connecting area 11 facilitates connection between the inner tube 1 and other inner tubes 1, as well as other pipes or equipment. Both ends of the inner tube 1 have connecting areas 11, each 70mm long. The inner tube 1 is 6000mm long, the outer tube 2 is 5860mm long, the annular protrusion 22 is 20mm wide, the distance between adjacent annular protrusions 22 is 1590mm, and the distance between the end of the outer tube 2 and the nearest annular protrusion 22 is 500mm. By providing the first protrusion 21 and the annular protrusion 22 on the inner wall of the outer tube 2, the pressure resistance of the outer tube 2 is enhanced, and the insulation layer 3 is restrained, preventing it from easily detaching from the pipes and ensuring the insulation effect of the insulation pipe.

[0030] In this embodiment, the inner wall of the outer tube 2 has at least one first vertical groove 23, and the side of the insulation layer 3 has a second protrusion 31 that matches the first vertical groove 23. The first vertical groove 23 extends along the length direction of the outer tube 2. By setting the first vertical groove 23, the connection effect between the insulation layer 3 and the outer tube 2 can be enhanced. Multiple annular protrusions 22 pass through the first vertical groove 23 and form multiple limiting areas 24 with the multiple first protrusions 21. The side of the insulation layer 3 is embedded in the limiting area 24, making it difficult for the insulation layer 3 to fall off from the outer tube 2.

[0031] In this embodiment, the outer wall of the inner tube 1 has at least one third protrusion 12, and the side of the third protrusion 12 is embedded in the insulation layer 3. This arrangement can enhance the connection between the inner tube 1 and the insulation layer 3, making it less likely for the insulation layer 3 to detach from the inner tube 1.

[0032] Example 2

[0033] In this embodiment, the outer wall of the inner tube 1 has at least one first annular groove 13, and the side of the insulation layer 3 has a fourth protrusion 32 that matches the first annular groove 13. The first annular groove 13 passes through the side of the third protrusion 12 to form a first locking area, which can enhance the connection effect between the insulation layer 3 and the inner tube 1.

[0034] In this embodiment, the outer wall of the inner tube 1 has at least one second vertical groove 14, and the side of the insulation layer 3 has a fifth protrusion 33 that matches the second vertical groove 14. The second vertical groove 14 passes through the first annular groove 13 and communicates with the first annular groove 13. By setting the first vertical groove 23, the connection effect between the inner tube 1 and the insulation layer 3 can be enhanced, and it can also play a guiding role when filling the insulation layer 3, so that the insulation adhesive can flow more easily into the first annular groove 13.

[0035] In this embodiment, the second vertical groove 14 is connected to the first annular groove 13, and the depth D2 of the first annular groove 13 is less than the depth D1 of the second vertical groove 14. The greater depth of the second vertical groove 14 allows for better flow guidance, enabling the thermal insulation adhesive to reach the first annular groove 13 and the first locking area more quickly.

[0036] In this embodiment, the outer wall of the inner tube 1 has at least one second annular groove 15, and the side of the insulation layer 3 has a sixth protrusion 34 that matches the second annular groove 15. The second annular groove 15 passes through the side of the third protrusion 12 to form a second locking area, which can enhance the connection effect between the insulation layer 3 and the inner tube 1.

[0037] In this embodiment, the second annular groove 15 is disposed between two adjacent first annular grooves 13, and the depth D3 of the second annular groove 15 is less than the depth D2 of the first annular groove 13. The first annular grooves 13 and the second annular grooves 15 are staggered and have different depths, which can ensure the connection effect between the insulation layer 3 and the inner tube 1, and also avoid reducing the strength of the inner tube 1.

[0038] In this embodiment, the second vertical groove 14 is connected to the second annular groove 15, and the depth D3 of the second annular groove 15 is less than the depth D1 of the second vertical groove 14. The greater depth of the second vertical groove 14 allows for better flow guidance, enabling the insulation adhesive to reach the second annular groove 15 and the second positioning area more quickly.

[0039] The other structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0040] Obviously, this utility model includes an inner tube and an outer tube sleeved on the inner tube. The inner tube is a conveying tube, and the outer tube is a protective tube. The outer tube can protect the inner tube from being squeezed by foreign objects and causing it to break. A heat insulation layer is provided between the inner tube and the outer tube. The heat insulation layer is heat insulation adhesive, which is filled between the inner tube and the outer tube. The heat insulation adhesive can be heat insulation foam. The inner wall of the outer tube is provided with at least one first protrusion and at least one annular protrusion. The end of the first protrusion is connected to the side of the annular protrusion. The first protrusion extends along the length of the outer tube. The first protrusion and the annular protrusion interlock to form an arched mesh structure, acting as a support to hold the inner wall of the outer pipe in place. This allows the outer pipe to better withstand external pressure, thus providing better protection for the inner pipe. The sides of both the first and annular protrusions are embedded in the insulation layer, preventing it from detaching from the outer pipe. The end of the inner pipe extends outward to form a connection area, facilitating connection between the inner pipe and other pipes or equipment. This invention, by incorporating the first and annular protrusions on the inner wall of the outer pipe, enhances the outer pipe's pressure resistance and limits the insulation layer, preventing it from detaching from the pipes and ensuring the insulation effect of the insulated pipe.

[0041] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on the utility model are within the protection scope of the utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. A heat-insulating pipe, characterized in that, The device includes an inner tube (1) and an outer tube (2) sleeved on the inner tube (1). An insulation layer (3) is provided between the inner tube (1) and the outer tube (2). The inner wall of the outer tube (2) is provided with at least one first protrusion (21) and at least one annular protrusion (22). The end of the first protrusion (21) and the side of the annular protrusion (22) are connected. The side of the first protrusion (21) and the side of the annular protrusion (22) are both embedded in the insulation layer (3). The end of the inner tube (1) extends outward to form a connection area (11).

2. The heat-insulating pipe as described in claim 1, characterized in that, The inner wall of the outer tube (2) has at least one first vertical groove (23), and the side of the insulation layer (3) has a second protrusion (31) that matches the first vertical groove (23). A plurality of the annular protrusions (22) pass through the first vertical groove (23) and form a plurality of limiting areas (24) with the plurality of the first protrusions (21).

3. The heat-insulating pipe as described in claim 1, characterized in that, The outer wall of the inner tube (1) has at least one third protrusion (12), the side of which is embedded in the insulation layer (3).

4. The heat-insulating pipe as described in claim 1, characterized in that, The outer wall of the inner tube (1) has at least one first annular groove (13), and the side of the insulation layer (3) has a fourth protrusion (32) that matches the first annular groove (13).

5. The heat-insulating pipe as described in claim 4, characterized in that, The outer wall of the inner tube (1) has at least one second vertical groove (14), and the side of the insulation layer (3) has a fifth protrusion (33) that matches the second vertical groove (14).

6. The heat-insulating pipe as described in claim 5, characterized in that, The second vertical groove (14) is connected to the first annular groove (13), and the depth of the first annular groove (13) is less than the depth of the second vertical groove (14).

7. The heat-insulating pipe as described in claim 5, characterized in that, The outer wall of the inner tube (1) has at least one second annular groove (15), and the side of the insulation layer (3) has a sixth protrusion (34) that matches the second annular groove (15).

8. The heat-insulating pipe as described in claim 7, characterized in that, The second annular groove (15) is disposed between two adjacent first annular grooves (13), and the depth of the second annular groove (15) is less than the depth of the first annular groove (13).

9. The heat-insulating pipe as described in claim 7, characterized in that, The second vertical groove (14) is connected to the second annular groove (15), and the depth of the second annular groove (15) is less than the depth of the second vertical groove (14).

10. The heat-insulating pipe as described in claim 1, characterized in that, The insulation layer (3) is an insulation adhesive, which is filled between the inner tube (1) and the outer tube (2).

Images