Thermal insulation type winding pipe

Abstract

This utility model relates to the field of spiral wound pipe technology, specifically a heat-insulating spiral wound pipe, comprising a main pipe and an insulation pipe, with a pressure-bearing strip disposed between the main pipe and the insulation pipe. The pressure-bearing strip is spirally disposed between the main pipe and the insulation pipe, and includes: an upper connector fixedly connected to the inner wall of the insulation pipe; a lower connector fixedly connected to the outer wall of the main pipe; and an X-shaped connector. By incorporating the pressure-bearing strip, when an impact acts on the pressure-bearing strip, the intersecting geometry of the X-shaped connector decomposes the concentrated force at a single point into oblique components, which diffuse and transmit to the outer wall of the main pipe through two branches, avoiding localized stress concentration and reducing the risk of structural damage. When the impact does not directly act on the pressure-bearing strip, the insulation pipe, by compressing adjacent pressure-bearing strips, triggers the coordinated buffering of multiple pressure-bearing strips, thereby improving the overall impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of spiral wound tube technology, specifically a heat-insulating spiral wound tube. Background Technology

[0002] High-density polyethylene corrugated pipes are characterized by their light weight, high pressure resistance, good toughness, fast construction, and long service life. Their excellent pipe wall structure design significantly reduces costs compared to other pipe structures, making them widely used in urban sewage discharge, long-distance low-pressure water transmission, and farmland irrigation projects.

[0003] However, due to its structural characteristics, a dent will occur when subjected to a single-point impact. This is similar to an egg; although the overall structure has a certain strength, it is easily damaged at the point of impact when subjected to a single force. Similarly, although the bellows has good overall performance, a single-point impact can disrupt the stability of its local structure, leading to dents. This seriously affects its performance and lifespan, and limits its application in many scenarios.

[0004] In view of this, we propose a heat-insulating spiral wound pipe. Utility Model Content

[0005] The purpose of this utility model is to provide a heat-insulating spiral pipe, which solves the problem that when a single point impact occurs, the corrugated pipe will dent due to its structural characteristics, and the external impact force cannot be effectively decomposed and transmitted, resulting in damage to the pipe.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat-insulating spiral pipe includes a main pipe and an insulation pipe. A pressure-bearing strip is provided between the main pipe and the insulation pipe, and the pressure-bearing strip is spirally arranged between the main pipe and the insulation pipe. The pressure-bearing strip includes: an upper connector fixedly connected to the inner wall of the insulation pipe; a lower connector fixedly connected to the outer wall of the main pipe; and an X-shaped connector, the bottom of which is fixedly connected to the lower connector, and the top of which is fixedly connected to the upper connector. An upper sealed cavity is provided between the X-shaped connector and the upper connector, and a lower sealed cavity is provided between the X-shaped connector and the lower connector. A heat-insulating mechanism is provided between the main pipe and the insulation pipe to provide heat insulation.

[0008] Preferably, the X-shaped connector has a cylindrical strip fixedly connected to its intersecting portion, and the two ends of the pressure-bearing strip are closed.

[0009] Preferably, the pressure-bearing strip is made of a flexible elastic material, and the thickness of the X-shaped connector gradually changes along the length of the cross-section.

[0010] Preferably, the upper sealed cavity and the lower sealed cavity are connected by an air guide hole, and the inner wall of the heat-insulating pipe is provided with a heat-insulating layer.

[0011] Preferably, the gap between the main tube and the insulation tube is filled with heat insulation cotton, and the surface of the pressure strip is provided with a wear-resistant coating.

[0012] Preferably, the insulation mechanism includes a side connecting ring and a fixing bolt. The side connecting ring is fixedly connected to the side of the insulation pipe, and a sealing connecting ring is fixedly connected to the outer wall of the main body pipe. The sealing connecting ring and the side connecting ring are fixed together by the fixing bolt.

[0013] Preferably, a sealing ring is provided between the sealing connecting ring and the side connecting ring, and an anti-loosening gasket is provided at the connection end of the fixing bolt and the side connecting ring and the sealing connecting ring.

[0014] By employing the above technical solution, this utility model provides a heat-insulating spiral wound pipe. It possesses at least the following beneficial effects:

[0015] 1. This utility model incorporates a pressure-bearing strip. When an impact is applied to the pressure-bearing strip, the cross geometry of the X-shaped connector decomposes the concentrated force at a single point into an oblique component. This component diffuses to the outer wall of the main pipe through two branches, preventing local stress concentration and reducing the risk of structural damage. When the impact does not directly affect the pressure-bearing strip, the insulation pipe triggers the linkage and buffering of multiple pressure-bearing strips by squeezing adjacent pressure-bearing strips, thereby improving the overall impact resistance.

[0016] 2. This utility model achieves a more stable insulation effect by setting up an insulation mechanism, a ring constraint structure composed of a side connecting ring, a sealing connecting ring and a fixing bolt, which mechanically locks the axial and radial relative positions of the insulation pipe and the main body pipe. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 This is a schematic diagram of the cross-section of the insulation pipe in this utility model;

[0021] Figure 4 This is a partial structural diagram of the pressure-bearing strip in this utility model;

[0022] Figure 5This is a partial structural schematic diagram of the cross-section of the main body tube in this utility model;

[0023] Figure 6 This utility model Figure 5 A magnified structural diagram at point B in the middle.

[0024] In the diagram: 1. Main body pipe; 2. Insulation mechanism; 21. Insulation pipe; 22. Side connecting ring; 23. Sealing connecting ring; 24. Fixing bolt; 3. Pressure bearing strip; 31. Upper connecting piece; 32. Lower connecting piece; 33. X-type connecting piece; 34. Cylindrical strip; 35. Upper sealed cavity; 36. Lower sealed cavity. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1 - Figure 6As shown, this utility model provides a technical solution: a heat-insulating spiral pipe, including a main body pipe 1 and an insulation pipe 21, with a pressure-bearing strip 3 provided between the main body pipe 1 and the insulation pipe 21. The pressure-bearing strip 3 is spirally arranged between the main body pipe 1 and the insulation pipe 21 to provide support. The pressure-bearing strip 3 includes: an upper connector 31, which is fixedly connected to the inner wall of the insulation pipe 21; a lower connector 32, which is fixedly connected to the outer wall of the main body pipe 1; and an X-shaped connector 33, the bottom of which is fixedly connected to the lower connector 32. The top of the X-shaped connector 33 is fixedly connected to the upper connector 31. An upper sealed cavity 35 is provided between the X-shaped connector 33 and the upper connector 31, and a lower sealed cavity 36 is provided between the X-shaped connector 33 and the lower connector 32. When the external insulation pipe 21 is subjected to a single-point impact, if the impact is located at the position of the pressure-bearing strip 3, the upper connector 31 of the pressure-bearing strip 3 receives the impact force and transfers the impact force to the X-shaped connector 33. Its X-shaped structure can effectively disperse external pressure when subjected to force. The mechanical characteristics of the X-shaped structure lie in its intersecting geometric shape: when the X-shaped connector 33 is subjected to impact... During impact, the two intersecting long branches decompose the concentrated single-point force into oblique components, causing the load originally concentrated at the impact point to diffuse and transfer to both sides through the two branches of the X-shape, ultimately dispersing to the lower connector 32 and the outer wall of the main body tube 1, thereby avoiding local stress concentration and achieving effective dispersion of external pressure. Simultaneously, the deformation of the X-shaped connector 33 causes local compression of the upper sealed cavity 35 and the lower sealed cavity 36. The air inside the upper sealed cavity 35 and the lower sealed cavity 36 will transfer to other parts without impact force. The compressibility of air allows it to absorb some of the impact energy when compressed. The amount of material is reduced, thus decreasing the instantaneous deformation of the X-type connector 33 and reducing the risk of structural damage. When the impact force of the external insulation pipe 21 is not at the position of the pressure strip 3, the insulation pipe 21 will also cause the upper connectors 31 on both sides to be squeezed. Through the linkage of the adjacent pressure strips 3, the impact force that was originally only borne by a local area is distributed to multiple parts of the pressure strip 3, so that the entire support structure of the pressure strip 3 participates in the buffering, avoiding "single-point failure", enhancing the overall impact resistance and extending the service life. An insulation mechanism 2 is provided between the main pipe 1 and the insulation pipe 21 to provide thermal insulation.

[0027] The X-shaped connector 33 is fixedly connected to a cylindrical strip 34 at its intersection. The intersection of the X-shaped connector 33 is a key node for the transmission of force. When subjected to compression or tension, it is prone to deformation or breakage due to stress concentration. The cylindrical strip 34, through its fixed connection to the intersection, effectively adds rigid support to the "weak point" of the X-shaped structure, enhancing the shear and bending moment resistance of the intersection and preventing cracking at the intersection due to long-term stress or instantaneous impact. The two ends of the pressure-bearing strip 3 are closed to seal the upper sealed cavity 35 and the lower sealed cavity 36. The pressure-bearing strip 3 is made of a flexible elastic material, such as rubber. The thickness of the X-shaped connector 33 gradually changes along the length of the cross section, for example, 2mm at both ends and 5mm at the intersection, to optimize stress distribution. The upper sealed cavity 35 and the lower sealed cavity 36 are connected by air vents to balance the pressure difference within the cavities. The inner wall of the insulation pipe 21 is provided with an insulation layer, and the gap between the main body pipe 1 and the insulation pipe 21 is filled with heat-insulating cotton, such as glass wool, to further improve the overall insulation performance. The surface of the pressure-bearing strip 3 is provided with a wear-resistant coating, such as a tungsten carbide coating, to reduce frictional wear between the insulation pipe 21 and the pressure-bearing strip 3.

[0028] The insulation mechanism 2 includes a side connecting ring 22 and a fixing bolt 24. The side connecting ring 22 is fixedly connected to the side of the insulation pipe 21. A sealing connecting ring 23 is fixedly connected to the outer wall of the main body pipe 1. The sealing connecting ring 23 and the side connecting ring 22 are fixed together by the fixing bolt 24. The side connecting ring 22 is fixed to the side of the insulation pipe 21, and the sealing connecting ring 23 is fixed to the outer wall of the main body pipe 1. The two are directly connected by the fixing bolt 24 to form a ring constraint structure. This design locks the axial and radial relative positions of the insulation pipe 21 and the main body pipe 1, preventing the insulation pipe 21 from shifting or falling off due to pipe vibration, external impact, or thermal expansion and contraction, and ensuring the stability of the fit between the insulation pipe 21 and the main body pipe 1. A sealing ring is provided between the sealing connecting ring 23 and the side connecting ring 22. Anti-loosening washers, such as spring washers or nylon insert anti-loosening washers, are provided at the connection ends of the fixing bolt 24 and the side connecting ring 22 and the sealing connecting ring 23 to prevent the bolt from loosening due to vibration.

[0029] When the heat-insulating spiral pipe of this utility model is used, if the external insulation pipe 21 is subjected to a single-point impact, and the impact is located at the position of the pressure-bearing strip 3, the upper connector 31 of the pressure-bearing strip 3 receives the impact force and transfers the impact force to the X-shaped connector 33. The X-shaped structure can effectively disperse the external pressure when subjected to force. The mechanical characteristics of the X-shaped structure are its intersecting geometric shape: when the X-shaped connector 33 bears the impact force, the two intersecting long conditions will decompose the concentrated single-point force into oblique component forces, so that the load originally concentrated at the impact point is diffused and transmitted to both sides through the two branches of the X-shape, and finally dispersed to the lower connector 32 and the outer wall of the main pipe 1, thereby avoiding local stress concentration and achieving effective dispersion of external pressure.

[0030] As the X-type connector 33 deforms, the upper sealed cavity 35 and the lower sealed cavity 36 are locally compressed. The air in the upper sealed cavity 35 and the lower sealed cavity 36 will be transferred to other parts without impact. The compressibility of air allows it to absorb some impact energy when squeezed, reducing the instantaneous deformation of the X-type connector 33 and reducing the risk of structural damage.

[0031] When the impact force of the external insulation pipe 21 is not at the position of the pressure strip 3, the insulation pipe 21 will also cause the upper connecting parts 31 on both sides to be squeezed. Through the linkage of the adjacent pressure strips 3, the impact force that was originally only borne by a local area is distributed to multiple parts of the pressure strip 3, so that the entire support structure of the pressure strip 3 participates in the buffering, avoids "single point failure", enhances the overall impact resistance, and extends the service life.

[0032] The side connecting ring 22 is fixed to the side of the insulation pipe 21, and the sealing connecting ring 23 is fixed to the outer wall of the main body pipe 1. The two are directly connected by fixing bolts 24 to form a ring constraint structure. This design locks the axial and radial relative positions of the insulation pipe 21 and the main body pipe 1, preventing the insulation pipe 21 from shifting or falling off due to pipe vibration, external impact, or thermal expansion and contraction, and ensuring the stability of the fit between the insulation pipe 21 and the main body pipe 1.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermal insulation type of spooling pipe comprising a body pipe (1) and a thermal insulation pipe (21), characterized in that: A pressure-bearing strip (3) is provided between the main body pipe (1) and the insulation pipe (21). The pressure-bearing strip (3) is spirally arranged between the main body pipe (1) and the insulation pipe (21). The pressure-bearing strip (3) includes: Upper connector (31), which is fixedly connected to the inner wall of the insulation pipe (21); The lower connector (32) is fixedly connected to the outer wall of the main body tube (1); X-type connector (33), the bottom of the X-type connector (33) is fixedly connected to the lower connector (32), the top of the X-type connector (33) is fixedly connected to the upper connector (31), an upper sealed cavity (35) is provided between the X-type connector (33) and the upper connector (31), and a lower sealed cavity (36) is provided between the X-type connector (33) and the lower connector (32); A heat insulation mechanism (2) is provided between the main body pipe (1) and the heat insulation pipe (21) to provide heat insulation for the main body pipe (1).

2. The insulated pipe of claim 1, wherein: The X-shaped connector (33) is fixedly connected to a cylindrical strip (34) at its intersection, and the two ends of the pressure-bearing strip (3) are closed.

3. The heat-insulating spiral wound pipe according to claim 1, characterized in that: The pressure-bearing strip (3) is made of flexible elastic material, and the thickness of the X-shaped connector (33) gradually changes along the length of the cross section.

4. The heat-insulating spiral wound pipe according to claim 1, characterized in that: The upper sealed cavity (35) and the lower sealed cavity (36) are connected by an air guide hole, and the inner wall of the heat-insulating pipe (21) is provided with a heat-insulating layer.

5. The heat-insulating spiral pipe according to claim 1, characterized in that: The gap between the main body pipe (1) and the insulation pipe (21) is filled with heat insulation cotton, and the surface of the pressure strip (3) is provided with a wear-resistant coating.

6. The heat-insulating spiral wound pipe according to claim 1, characterized in that: The insulation mechanism (2) includes a side connecting ring (22) and a fixing bolt (24). The side connecting ring (22) is fixedly connected to the side of the insulation pipe (21). A sealing connecting ring (23) is fixedly connected to the outer wall of the main body pipe (1). The sealing connecting ring (23) and the side connecting ring (22) are fixed by the fixing bolt (24).

7. A heat-insulating spiral wound pipe according to claim 6, characterized in that: A sealing ring is provided between the sealing connecting ring (23) and the side connecting ring (22), and an anti-loosening gasket is provided at the connection end of the fixing bolt (24) and the side connecting ring (22) and the sealing connecting ring (23).

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