A multilayer composite heat conducting oil heating pipe structure
Patent Information
- Application Number
- CN202522269394.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0005]本实用新型所要解决的技术问题是提供一种多层复合导热油加热管道结构，以解决传统加热管道导热效率低、换热不充分、防护性能差且无法多位置调节加热的问题
1.本实用新型提出的一种多层复合导热油加热管道结构通过设置多层复合的加热管道，结合导热铝层和石墨烯层的优势，显著提升了导热效率，同时石墨烯层的化学稳定性也增强了管道的抗腐蚀能力，延长了使用寿命；
Smart Images
Figure CN224771750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of asphalt processing and application technology, and in particular to a multi-layer composite heat-conducting oil heating pipe structure. Background Technology
[0002] In the asphalt processing process, heating pipes are key components for transferring heat and ensuring that the asphalt is at a suitable processing temperature.
[0003] Traditional heating pipes are mostly made of a single material, which results in low thermal conductivity and insufficient heat exchange due to the excessively fast flow of heat transfer oil within the pipe. At the same time, when used in an asphalt environment, the pipes are susceptible to corrosion, wear, and external impacts from the asphalt, leading to a short service life. Furthermore, traditional pipes are fixed in position, making it difficult to adjust heating at multiple locations according to the needs of asphalt processing, resulting in poor flexibility and an inability to meet the requirements of efficient and stable asphalt processing production.
[0004] Therefore, this utility model proposes a multi-layer composite heat-conducting oil heating pipe structure. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a multi-layer composite heat transfer oil heating pipe structure to solve the problems of low heat transfer efficiency, insufficient heat exchange, poor protection performance and inability to adjust heating in multiple positions in traditional heating pipes.
[0006] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a multi-layer composite heat transfer oil heating pipe structure is provided, including a heating pipe, the heating pipe being U-shaped in shape, and a flow delay component being threadedly connected to both ends of the heating pipe to achieve the delayed flow of heat transfer oil inside the heating pipe; The outer wall of the heating pipe is fitted with a protective sleeve to protect the entire heating pipe when it is used in asphalt. The top of the heating pipe is bolted to a drive unit, which allows workers to use the drive unit to heat multiple positions of the entire heating pipe.
[0007] The present invention is further configured such that the heating pipe is composed of multiple layers, consisting of a thermally conductive aluminum layer and a graphene layer from the inside out.
[0008] Through the above technical solution, the excellent thermal conductivity of the thermally conductive aluminum layer can quickly transfer the heat of the heat-conducting oil to the outer wall of the pipe and act on the asphalt. At the same time, the outer graphene layer has extremely high thermal conductivity and chemical stability, which can further improve the overall heat conduction rate of the pipe and reduce heat loss. On the other hand, it can isolate the direct contact between the asphalt and the thermally conductive aluminum layer, avoid corrosion of the thermally conductive aluminum layer by the asphalt, and extend the service life of the pipe. Moreover, compared with the single material structure, the multi-layer composite structure has higher mechanical strength and can withstand certain pressure and impact during the asphalt processing.
[0009] The present invention is further configured such that: the flow extension component includes a central conduit, the central conduit is hollow, and a plurality of flow extension plates are uniformly sleeved on its outer wall, and the plurality of flow extension plates have a plurality of sets of flow guide holes in their radial direction, and the plurality of sets of flow guide holes are circumferentially equidistantly distributed.
[0010] Through the above technical solution, the hollow central conduit can serve as the main channel for the flow of heat transfer oil, while the multiple flow-extending plates fitted on the outer wall can obstruct the flow of heat transfer oil, forcing it to pass through the guide holes on the flow-extending plates to continue flowing. The circumferentially distributed guide holes can evenly distribute the heat transfer oil during the flow process, avoiding excessively fast local flow rates. This effectively slows down the flow time of the heat transfer oil in the heating pipe, increases the contact time and contact area between the heat transfer oil and the inner wall of the pipe, ensures that the heat of the heat transfer oil can be fully transferred to the outer wall of the pipe, improves heat exchange efficiency, and avoids heat waste caused by excessively fast flow rates of the heat transfer oil.
[0011] The present invention is further configured such that: the outer wall of the flow-delay plate near the port of the heating pipe is threaded to the inner wall of the port of the heating pipe, and the outer walls of the remaining multiple flow-delay plates are all attached to the inner wall of the heating pipe.
[0012] Through the above technical solution, the flow-extending plate near the port adopts a threaded connection, which can realize the stable fixation of the flow-extending component and the heating pipe, and prevent the flow-extending component from shifting or falling off under the impact of the heat transfer oil flow; the outer wall of the remaining flow-extending plate is attached to the inner wall of the pipe, which can prevent the heat transfer oil from flowing quickly through the gap between the flow-extending plate and the inner wall of the pipe, ensuring that all heat transfer oil must flow through the guide hole, ensuring the stability and reliability of the flow-extending effect. At the same time, the attached setting can also reduce turbulence during the flow of heat transfer oil and reduce energy loss.
[0013] The present invention is further configured such that: the outer wall of the protective sleeve is uniformly provided with a plurality of heat dissipation holes, the plurality of heat dissipation holes are arranged at equal intervals along the outer arc wall of the protective sleeve, and the two side walls of the protective sleeve are symmetrically fixedly connected with reinforcing ribs, the end faces of the two reinforcing ribs are respectively inclined and smoothly transitioned to the outer wall of the protective sleeve.
[0014] Through the above technical solutions, the heat dissipation holes allow the heat transferred from the heating pipe to the protective sleeve to be evenly distributed into the asphalt through the channels, preventing heat accumulation inside the protective sleeve from causing excessively high local temperatures and affecting the performance of the protective sleeve material. At the same time, it can also help improve the heating uniformity of the asphalt. The symmetrical reinforcing ribs on both sides can significantly enhance the overall structural strength and impact resistance of the protective sleeve. When the pipe is subjected to external collisions or impacts from the flow of asphalt, the reinforcing ribs can disperse the impact force and protect the heating pipe from damage. The smooth transition design of the beveled end face of the reinforcing ribs can reduce the frictional resistance between the asphalt and the protective sleeve during the flow process, prevent asphalt from accumulating on the surface of the protective sleeve, and ensure the smooth progress of the asphalt processing.
[0015] The present invention is further configured such that: a connecting bolt is provided through the side wall of the protective sleeve near the top position, and the connecting bolt is threadedly connected to the connecting blocks provided on both sides of the heating pipe near the top position.
[0016] The above technical solution utilizes connecting bolts to thread the connecting block of the heating pipe onto the protective sleeve, enabling detachable fixing of the protective sleeve and the heating pipe. This facilitates replacement when the protective sleeve is damaged, reducing maintenance costs. Furthermore, it ensures a tight fit between the protective sleeve and the heating pipe during use, preventing relative displacement due to vibration or impact and guaranteeing continuous protection. Simultaneously, the connecting block provides a stable connection point for the installation of the protective sleeve, avoiding direct drilling into the outer wall of the heating pipe, which could damage the pipe structure and thermal conductivity.
[0017] The present invention is further configured such that: the driving part includes a sealing plate bolted to the bottom of two connecting blocks, and the top of the sealing plate is symmetrically fixedly connected to the two ends, and the two interfaces are respectively connected to the two ports of the heating pipe, and a driving handle is fixedly connected to the center of the top of the sealing plate.
[0018] Through the above technical solution, the sealing plate is connected to the connecting block by bolts, which can realize the stable assembly of the drive unit and the heating pipe. At the same time, the sealing plate can also provide a certain degree of sealing and protection for the top of the heating pipe. The two interfaces are connected to the two ports of the heating pipe respectively, which can serve as the inlet and outlet of the heat transfer oil, facilitating connection with external heat transfer oil delivery equipment and ensuring the circulation supply of heat transfer oil. The drive handle at the top center of the sealing plate provides a convenient operating component for the operator. The operator can push or rotate the entire heating pipe structure by holding the drive handle, realizing the multi-position movement of the heating pipe in the asphalt. This allows the heating position to be adjusted according to the temperature requirements of the asphalt processing area, improving the flexibility and targeting of heating and meeting the heating needs of different processing scenarios.
[0019] The beneficial effects of this utility model are as follows: 1. The multi-layer composite heat-conducting oil heating pipe structure proposed in this utility model significantly improves the heat conduction efficiency by setting up a multi-layer composite heating pipe, combining the advantages of heat-conducting aluminum layer and graphene layer. At the same time, the chemical stability of graphene layer also enhances the corrosion resistance of the pipe and extends its service life. 2. The multi-layer composite heat transfer oil heating pipe structure proposed in this utility model effectively slows down the flow rate of the heat transfer oil through the design of the flow delay component, increases the heat exchange time and area, improves the heat exchange efficiency, and avoids heat waste; the protective sleeve provides comprehensive protection for the pipe, and the design of the reinforced ribs and heat dissipation holes further optimizes the protective performance and heat dissipation effect; the drive handle of the drive unit makes it convenient for operators to adjust the heating position, improves the flexibility of the device, and can better meet the diverse needs of asphalt processing. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a multi-layer composite heat-conducting oil heating pipe according to the present invention; Figure 2 This is a cross-sectional view of a multi-layer composite heat-conducting oil heating pipe structure according to the present invention. Figure 3 This is an exploded view of a multi-layer composite heat-conducting oil heating pipe structure according to the present invention. Figure 4 This is a structural diagram of the protective sleeve in a multi-layer composite heat-conducting oil heating pipe structure according to this utility model; Figure 5 This is a structural diagram showing the connection between the heating pipe and the drive unit in a multi-layer composite heat-conducting oil heating pipe structure according to this utility model. Figure 6 This is a structural diagram of the flow-extending component in a multi-layer composite heat-conducting oil heating pipe structure according to this utility model.
[0021] In the diagram: 1. Heating pipe; 11. Connecting block; 2. Flow extension assembly; 21. Central conduit; 22. Flow extension plate; 23. Flow guide hole; 3. Protective sleeve; 31. Heat dissipation hole; 32. Reinforcing rib; 33. Connecting bolt; 4. Drive unit; 41. Sealing plate; 42. Interface; 43. Drive handle. Detailed Implementation
[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0023] like Figures 1-3As shown, a multi-layer composite heat-conducting oil heating pipe structure includes a heating pipe 1, which is U-shaped and consists of multiple layers, from the inside out: a heat-conducting aluminum layer and a graphene layer. Utilizing the excellent thermal conductivity of the aluminum layer, the heat from the heat-conducting oil can be quickly transferred to the outer wall of the pipe and act on the asphalt. Simultaneously, the outer graphene layer has extremely high thermal conductivity and chemical stability, which on the one hand further improves the overall heat conduction rate of the pipe and reduces heat loss; on the other hand, it isolates the asphalt from direct contact with the heat-conducting aluminum layer, preventing corrosion of the aluminum layer by the asphalt and extending the service life of the pipe. Furthermore, compared to a single-material structure, the multi-layer composite structure has higher mechanical strength and can withstand certain pressures and impacts during asphalt processing.
[0024] like Figure 2 and Figure 6 As shown, both ends of the heating pipe 1 are threadedly connected to a flow-delaying assembly 2 to delay the flow of heat transfer oil inside the heating pipe 1. The flow-delaying assembly 2 includes a central conduit 21, which is hollow, and its outer wall is uniformly fitted with multiple flow-delaying plates 22. The multiple flow-delaying plates 22 have multiple sets of guide holes 23 in their radial direction, and the multiple sets of guide holes 23 are equidistantly distributed in a circle. The hollow central conduit 21 can serve as the main channel for the flow of heat transfer oil, while the multiple flow-delaying plates 22 on the outer wall... 2 can block the flow of heat transfer oil, forcing the heat transfer oil to pass through the guide holes 23 on the flow plate 22 to continue flowing; the circumferentially evenly distributed guide holes 23 can make the heat transfer oil flow evenly during the flow process, avoid excessive local flow velocity, thereby effectively delaying the flow time of the heat transfer oil in the heating pipe 1, increasing the contact time and contact area between the heat transfer oil and the inner wall of the pipe, ensuring that the heat of the heat transfer oil can be fully transferred to the outer wall of the pipe, improving the heat exchange efficiency, and avoiding heat waste caused by excessive heat transfer oil flow velocity; The outer wall of the flow-extending plate 22 located near the port of the heating pipe 1 is threaded to the inner wall of the port of the heating pipe 1. The outer walls of the remaining multiple flow-extending plates 22 are all attached to the inner wall of the heating pipe 1. The flow-extending plates 22 near the port are connected by threads, which can achieve a stable fixation between the flow-extending assembly 2 and the heating pipe 1, preventing the flow-extending assembly 2 from shifting or falling off under the impact of the heat transfer oil flow. The outer walls of the remaining flow-extending plates 22 are attached to the inner wall of the pipe, which can prevent the heat transfer oil from flowing quickly through the gap between the flow-extending plate 22 and the inner wall of the pipe, ensuring that all heat transfer oil flows through the guide hole 23, ensuring the stability and reliability of the flow-extending effect. At the same time, the attached setting can also reduce turbulence during the flow of heat transfer oil and reduce energy loss.
[0025] like Figure 4 and Figure 5As shown, a protective sleeve 3 is fitted onto the outer wall of the heating pipe 1 to protect the entire heating pipe 1 when it is used in asphalt. Multiple heat dissipation holes 31 are evenly opened on the outer wall of the protective sleeve 3. The multiple heat dissipation holes 31 are arranged at equal intervals along the outer arc wall of the protective sleeve 3. Reinforcing ribs 32 are symmetrically fixedly connected to the two side walls of the protective sleeve 3. The symmetrical reinforcing ribs 32 on both sides can significantly enhance the overall structural strength and impact resistance of the protective sleeve 3. When the pipe is subjected to external collision or asphalt flow impact, the reinforcing ribs 32 can disperse the impact force and protect the heating pipe 1 from damage. The end faces of the two reinforcing ribs 32 are respectively inclined and smoothly transition to the outer wall of the protective sleeve 3, which can reduce the frictional resistance between the asphalt and the protective sleeve 3 during the flow process, avoid the accumulation of asphalt on the surface of the protective sleeve 3, and ensure the smooth progress of the asphalt processing. The setting of heat dissipation holes 31 can allow the heat transferred from the heating pipe 1 to the protective sleeve 3 to be evenly distributed into the asphalt through the holes, avoiding the accumulation of heat inside the protective sleeve 3 and causing the local temperature to be too high, which would affect the material performance of the protective sleeve 3. At the same time, it can also help improve the heating uniformity of the asphalt. A connecting bolt 33 is threaded through the side wall of the protective sleeve 3 near the top and is threadedly connected to the connecting blocks 11 located near the top on both sides of the heating pipe 1. The connecting bolt 33 is used to thread the protective sleeve 3 to the connecting blocks 11 of the heating pipe 1, which allows for detachable fixing of the protective sleeve 3 to the heating pipe 1. This facilitates replacement of the protective sleeve 3 when it is damaged, reducing maintenance costs. It also ensures that the protective sleeve 3 fits tightly to the heating pipe 1 during use, preventing relative displacement due to vibration or impact and ensuring the continuity of the protective effect. At the same time, the setting of the connecting blocks 11 provides a stable connection point for the installation of the protective sleeve 3, avoiding damage to the pipe structure and thermal conductivity caused by drilling directly into the outer wall of the heating pipe 1.
[0026] like Figure 5As shown, a drive unit 4 is bolted to the top of the heating pipe 1, allowing operators to use the drive unit 4 to drive multi-position heating of the entire heating pipe 1. The drive unit 4 includes a sealing plate 41 bolted to the bottom of two connecting blocks 11. The sealing plate 41 is connected to the connecting blocks 11 by bolts, enabling a stable assembly of the drive unit 4 and the heating pipe 1. At the same time, the sealing plate 41 can provide a certain degree of sealing and protection for the top of the heating pipe 1. The top of the sealing plate 41 is symmetrically fixed with interfaces 42 near both ends, and the two interfaces 42 are respectively connected to the two ports of the heating pipe 1. 42 is connected to two ports of the heating pipe 1 respectively, and can be used as the inlet and outlet of the heat transfer oil, which facilitates connection with external heat transfer oil conveying equipment and ensures the circulation supply of heat transfer oil. The top center of the sealing plate 41 is fixedly connected to the drive handle 43, which provides a convenient operating component for the staff. The staff can push or rotate the entire heating pipe structure by holding the drive handle 43, so as to realize the multi-position movement of the heating pipe in the asphalt. In this way, the heating position can be adjusted according to the temperature requirements of the asphalt processing area, improving the flexibility and targeting of heating and meeting the heating requirements under different processing scenarios.
[0027] In use, this utility model connects the pipe of the external heat transfer oil conveying device to the two interfaces 42 of the drive unit 4. One interface 42 serves as the oil inlet, conveying high-temperature heat transfer oil into the heating pipe 1, while the other interface 42 serves as the oil outlet, realizing the circulation of the heat transfer oil. After the heat transfer oil enters the heating pipe 1, under the action of the flow extension component 2, it needs to flow through the guide holes 23 on the flow extension plate 22, thus slowing down the flow speed and making full contact with the inner wall of the heating pipe 1. The heat-conducting aluminum layer of the heating pipe 1 quickly transfers the heat of the heat transfer oil to the outer graphene layer. The graphene layer further evenly transfers the heat to the outer wall of the pipe and dissipates it into the asphalt through the heat dissipation holes 31 of the protective sleeve 3, thereby heating the asphalt.
[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A multi-layer composite heat transfer oil heating pipe structure, comprising a heating pipe (1), characterized in that: The heating pipe (1) is U-shaped, and both ends of the heating pipe (1) are threaded with a flow delay component (2) to delay the flow of heat transfer oil inside the heating pipe (1). The outer wall of the heating pipe (1) is fitted with a protective sleeve (3) to protect the entire heating pipe (1) when it is used in asphalt. The top of the heating pipe (1) is bolted with a drive unit (4) so that the operator can use the drive unit (4) to drive the heating pipe (1) to heat multiple positions.
2. The multi-layer composite heat-conducting oil heating pipe structure according to claim 1, characterized in that: The heating pipe (1) is composed of multiple layers, consisting of a thermally conductive aluminum layer and a graphene layer from the inside out.
3. A multi-layer composite heat conducting oil heating pipe structure according to claim 1, characterized in that: The flow extension component (2) includes a central conduit (21), which is hollow and has multiple flow extension plates (22) uniformly sleeved on its outer wall. The multiple flow extension plates (22) have multiple sets of flow guide holes (23) in their radial direction, and the multiple sets of flow guide holes (23) are circumferentially distributed.
4. A multilayer composite thermally conductive oil heating pipe structure according to claim 3, characterized in that: The outer wall of the flow-extending plate (22) located near the port of the heating pipe (1) is threaded to the inner wall of the port of the heating pipe (1), and the outer walls of the remaining multiple flow-extending plates (22) are all attached to the inner wall of the heating pipe (1).
5. A multilayer composite thermally conductive oil heating pipe structure according to claim 1, characterized in that: The outer wall of the protective sleeve (3) is uniformly provided with a plurality of heat dissipation holes (31). The plurality of heat dissipation holes (31) are arranged at equal intervals along the outer arc wall of the protective sleeve (3). The two side walls of the protective sleeve (3) are symmetrically fixedly connected with reinforcing ribs (32). The end faces of the two reinforcing ribs (32) are respectively inclined and smoothly transitioned to the outer wall of the protective sleeve (3).
6. A multilayer composite thermally conductive oil heating pipe structure according to claim 5, characterized in that: The protective sleeve (3) has a connecting bolt (33) through it near the top of its side wall and is threadedly connected to the connecting blocks (11) on both sides of the heating pipe (1) near the top of its side wall.
7. The multi-layer composite heat-conducting oil heating pipe structure according to claim 6, characterized in that: The drive unit (4) includes a sealing plate (41) bolted to the bottom of two connecting blocks (11). The top of the sealing plate (41) is symmetrically fixed with interfaces (42) near both ends, and the two interfaces (42) are respectively connected to the two ports of the heating pipe (1). The center of the top of the sealing plate (41) is fixedly connected with a drive handle (43).