Anti-corrosion heat preservation outer protection structure for heat distribution pipeline

Abstract

The utility model discloses an anti-corrosion heat preservation outer protection structure for a heat distribution pipeline. The anti-corrosion heat preservation outer protection structure comprises a protection shell and a sealing assembly. The protective shell is formed by connecting two semi-arc-shaped protective plates through a hinge, the inner wall of the protective shell is provided with a heat preservation layer and an elastic supporting piece, and the outer surface of the protective shell is coated with a plurality of corrosion-resistant coatings. The sealing assembly comprises an annular sealing ring, a locking mechanism and an adjusting gasket and is used for achieving end sealing. The preferable scheme further comprises diversion trenches, reinforcing ribs, positioning pins and the like. The problem of corrosion resistance of a heat distribution pipeline outer protection structure in a complex environment can be effectively solved, installation convenience and sealing performance are optimized, the pipeline operation efficiency is remarkably improved, and the service life of the pipeline is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of thermal pipeline protection technology, and in particular to an anti-corrosion and heat-insulating outer protective structure for thermal pipelines. Background Technology

[0002] Thermal pipelines are crucial facilities for transporting high-temperature media, widely used in urban heating, industrial production, and other fields. In actual operation, thermal pipelines are constantly exposed to the external environment, making them susceptible to corrosion and heat loss, thus reducing their service life and operational efficiency. To address this issue, a corrosion-resistant insulation layer is typically installed on the outside of the pipeline, protected by an external protective structure. Existing external protective structures for thermal pipelines are mainly made of metal or polymer materials, possessing certain corrosion resistance and insulation properties, but limitations remain in long-term use. For example, some external protective structures lack sufficient corrosion resistance in complex environments, easily leading to insulation layer failure due to external moisture intrusion; furthermore, existing structures often employ a split design, making installation cumbersome, and joints prone to becoming weak points for corrosion. Therefore, a new type of corrosion-resistant and heat-insulating external protective structure for thermal pipelines is urgently needed to overcome the shortcomings of existing technologies. Utility Model Content

[0003] The purpose of this utility model is to provide a corrosion-resistant and heat-insulating outer protective structure for thermal pipelines, which solves the problems mentioned in the background art.

[0004] This utility model is achieved by providing a corrosion-resistant and heat-insulating outer protective structure for thermal pipelines.

[0005] The system includes a protective shell and sealing components. The protective shell consists of two semi-circular arc-shaped protective plates connected by a hinge to form a whole. The inner wall of the protective shell is provided with an insulation layer, and an elastic support is installed between the insulation layer and the protective plates to compensate for the expansion or contraction of the thermal pipeline due to temperature changes. The outer surface of the protective shell is coated with a corrosion-resistant coating, which is composed of multiple layers of composite materials, including a bottom epoxy resin layer, a middle ceramic microparticle reinforcement layer, and a top fluorocarbon coating. Sealing components are provided at both ends of the protective shell. The sealing components include an annular sealing ring and a locking mechanism. The annular sealing ring is embedded in the end groove of the protective plate, and the locking mechanism uses bolts to fix the two protective plates and press the sealing ring to achieve sealing protection at the pipeline joint.

[0006] Preferably, the elastic support includes multiple spring columns, with both ends of each spring column fixedly connected to the inner wall of the protective plate and the outer surface of the insulation layer, respectively. The spring columns are evenly distributed along the axial direction of the protective plate, and each spring column is fitted with a flexible sleeve made of polytetrafluoroethylene (PTFE). The flexible sleeve is used to prevent the spring column from being corroded by moisture during long-term use. The design of the spring columns allows the protective shell to adapt to the radial expansion or contraction of the thermal pipeline caused by temperature changes, while maintaining tight contact between the insulation layer and the outer wall of the pipeline.

[0007] Preferably, the sealing assembly further includes an adjusting shim, which is disposed on the outside of the annular sealing ring. The thickness of the adjusting shim can be adjusted according to the different pipe diameters to adapt to different specifications of thermal pipes. The adjusting shim is made of a high-polymer composite material, which has good elasticity and wear resistance, and can further improve the sealing effect under the action of the locking mechanism. The locking mechanism includes two symmetrically arranged locking plates. One end of the locking plate is rotatably connected to the guard plate by a pin, and the other end is fixedly connected to the guard plate by bolts. The inner side of the locking plate is provided with anti-slip teeth, which cooperate with the protrusions on the outer surface of the guard plate to prevent the locking plate from loosening during use.

[0008] Preferably, the inner wall of the protective shell is provided with a guide channel, which extends axially along the protective plate and has an arc-shaped cross-section. This guide channel directs moisture or liquid that may seep into the protective shell towards the drain holes at both ends. The drain holes are located at the ends of the protective plate, and a one-way valve is installed at the outlet of each drain hole. The one-way valve opens outwards to prevent external moisture from flowing back into the protective shell. The guide channel design effectively prevents moisture from remaining inside the protective shell for extended periods, thereby reducing the risk of moisture absorption in the insulation layer.

[0009] Preferably, the bottom epoxy resin layer of the corrosion-resistant coating is attached to the outer surface of the protective plate by a spraying process, and the thickness of the epoxy resin layer is 0.2 mm to 0.5 mm. The middle ceramic particle reinforcement layer is formed by an electrostatic spraying process, and the diameter of the ceramic particles is 10 μm to 50 μm, with a thickness of 0.3 mm to 0.8 mm. The surface fluorocarbon coating is applied by a roller coating process, and the thickness of the fluorocarbon coating is 0.1 mm to 0.3 mm. The fluorocarbon coating has excellent UV resistance and self-cleaning ability, which can effectively extend the service life of the protective shell.

[0010] Preferably, the insulation layer is composed of multiple layers of composite material, including a heat insulation layer near the outer wall of the pipe and a moisture-absorbing layer near the inner wall of the protective plate. The heat insulation layer is made of aerogel, which has an extremely low thermal conductivity and can effectively reduce heat loss from the thermal pipeline. The moisture-absorbing layer is made of activated carbon fiber, which has a strong adsorption capacity and can absorb trace amounts of moisture that may penetrate into the protective shell, thereby keeping the insulation layer dry. The heat insulation layer and the moisture-absorbing layer are fixedly connected by an adhesive, which is made of silicone sealant and has good high-temperature resistance and bonding strength.

[0011] Preferably, the outer surface of the protective plate is provided with reinforcing ribs, which are distributed crisscrossingly along the axial and circumferential directions of the protective plate to form a grid structure. The reinforcing ribs are made of aluminum alloy, which has high strength and low density, effectively improving the overall rigidity of the protective plate while reducing the weight of the protective shell. The cross-section of the reinforcing ribs is trapezoidal, with the narrow side of the trapezoid facing the outer surface of the protective plate and the wide side facing the inner surface of the protective plate. This design can reduce the amount of material used while ensuring strength.

[0012] Preferably, the hinge comprises two symmetrically arranged hinge plates. One end of each hinge plate is fixedly connected to a guard plate by rivets, and the other end is connected to each other by a pin. Both ends of the pin are equipped with anti-detachment caps made of nylon, which has good wear resistance and impact resistance, preventing the pin from falling off during long-term use. The surface of the hinge plates is anodized, with an anodized layer thickness of 10μm to 20μm. The anodized layer has excellent corrosion resistance, extending the service life of the hinge.

[0013] Preferably, the protective housing has locating pins at both ends, which are embedded in the end through holes of the protective plate. The locating pins are made of stainless steel, which has good corrosion resistance and mechanical strength, ensuring accurate positioning of the protective housing during installation. The outer surface of the locating pin is threaded with a thread pitch of 1mm to 2mm. The thread design allows the locating pin to be firmly fixed in the through holes of the protective plate, while also facilitating disassembly and replacement.

[0014] Preferably, the locking mechanism further includes a limiting block disposed on the inner side of the locking plate. The limiting block is made of hard rubber, which has good elasticity and wear resistance, and can provide a buffering effect when the locking plate presses against the sealing ring, preventing the locking plate from excessively compressing the sealing ring. The surface of the limiting block is provided with anti-slip texture, which cooperates with the anti-slip teeth on the inner side of the locking plate to improve the stability of the locking mechanism.

[0015] This utility model solves the problem of insufficient corrosion resistance of existing thermal pipeline outer protective structures in complex environments through the above-mentioned technical solutions, while optimizing the convenience of installation and sealing performance, and improving the operating efficiency and service life of thermal pipelines. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a schematic diagram of the installation of this utility model.

[0019] The attached diagram is labeled as follows: 1. Protective shell; 2. Protective plate; 3. Hinge; 4. Insulation layer; 5. Elastic support; 6. Corrosion-resistant coating; 7. Annular sealing ring; 8. Locking mechanism; 9. Adjusting shim; 10. Guide groove; 11. Drain hole; 12. One-way valve; 13. Positioning pin; 14. Reinforcing rib. Detailed Implementation

[0020] This utility model provides a corrosion-resistant and heat-insulating outer protective structure for thermal pipelines, as detailed below. Figure 1 To be continued Figure 3 The accompanying drawings and component numbers are described in detail. The protective housing 1 consists of two semi-circular arc-shaped protective plates 2, which are connected by hinges 3 to form an integral structure, as shown below. Figure 1 As shown. Hinge 3 includes two symmetrically arranged hinge plates. One end of the hinge plate is fixedly connected to the guard plate 2 by rivets, and the other end is connected to each other by pins. Both ends of the pins are equipped with anti-detachment caps made of nylon. The surface of the hinge plate is anodized, and the thickness of the anodized layer is 10μm to 20μm. The anodized layer can improve the corrosion resistance of hinge 3. The inner wall of the guard plate 2 is provided with a heat insulation layer 4. An elastic support 5 is provided between the heat insulation layer 4 and the guard plate 2. The elastic support 5 includes multiple spring columns, which are evenly distributed along the axial direction of the guard plate 2. Each spring column is fitted with a flexible sleeve made of polytetrafluoroethylene. The two ends of the spring columns are fixedly connected to the inner wall of the guard plate 2 and the outer surface of the heat insulation layer 4, respectively, to achieve adaptive compensation for the expansion or contraction of the thermal pipeline caused by temperature changes.

[0021] The outer surface of the protective housing 1 is coated with a corrosion-resistant coating 6 made of multiple layers of composite materials, such as... Figure 2As shown. The bottom layer of the corrosion-resistant coating 6 is an epoxy resin layer, which is attached to the outer surface of the protective plate 2 by a spraying process, and its thickness is 0.2 mm to 0.5 mm. The middle layer is a ceramic particle reinforcement layer, which is formed by an electrostatic spraying process. The diameter of the ceramic particles is 10 μm to 50 μm, and the thickness of the ceramic particle reinforcement layer is 0.3 mm to 0.8 mm. The top layer is a fluorocarbon coating, which is applied by a roller coating process, and its thickness is 0.1 mm to 0.3 mm. The above multi-layer structure is formed by layering to form a complete corrosion-resistant coating 6, so as to improve the corrosion resistance of the protective shell 1 in complex environments.

[0022] Sealing assemblies are provided at both ends of the protective housing 1. Each sealing assembly includes an annular sealing ring 7, an adjusting shim 9, and a locking mechanism 8. Figure 3 As shown. The annular sealing ring 7 is embedded in the end groove of the protective plate 2. The adjusting shim 9 is set on the outside of the annular sealing ring 7. The thickness of the adjusting shim 9 can be adjusted according to the different pipe diameters to adapt to different specifications of thermal pipes. The locking mechanism 8 includes two symmetrically arranged locking plates. One end of the locking plate is rotatably connected to the protective plate 2 by a pin, and the other end is fixedly connected to the protective plate 2 by a bolt. The inner side of the locking plate is provided with anti-slip teeth, which cooperate with the protrusions on the outer surface of the protective plate 2 to prevent the locking plate from loosening during use. The locking mechanism 8 also includes a limiting block, which is set on the inner side of the locking plate. The limiting block is made of hard rubber, and its surface is provided with anti-slip textures, which cooperate with the anti-slip teeth on the inner side of the locking plate to improve the stability of the locking mechanism 8.

[0023] The inner wall of the protective housing 1 is provided with a guide channel 10, which extends axially along the protective plate 2 and has an arc-shaped cross-section. This guide channel 10 is used to guide moisture or liquid that may seep into the protective housing 1 towards the drain holes 11 at both ends. Figure 2 As shown. Drain hole 11 is located at the end of the protective plate 2, and a one-way valve 12 is installed at the outlet of drain hole 11. The opening direction of one-way valve 12 is outward to prevent external moisture from flowing back into the protective shell 1. The design of the guide channel 10 achieves effective guidance of moisture or liquid through the arc cross section and axial extension, thereby avoiding moisture from remaining inside the protective shell 1 for a long time.

[0024] The insulation layer 4 is composed of multiple layers of composite materials, including a heat insulation layer near the outer wall of the pipe and a moisture-absorbing layer near the inner wall of the protective plate 2, such as... Figure 2As shown. The insulation layer is made of aerogel, which has an extremely low thermal conductivity, effectively reducing heat loss from the heat pipes. The moisture-absorbing layer is made of activated carbon fiber, which has a strong adsorption capacity and can absorb trace amounts of moisture that may penetrate into the protective shell 1, thus keeping the insulation layer 4 dry. The insulation layer and the moisture-absorbing layer are fixedly connected by an adhesive made of silicone, which has good high-temperature resistance and bonding strength.

[0025] The outer surface of the guard plate 2 is provided with reinforcing ribs 14, which are distributed intersectingly along the axial and circumferential directions of the guard plate 2 to form a grid-like structure, such as... Figure 1 As shown. The reinforcing rib 14 is made of aluminum alloy. Aluminum alloy has high strength and low density, which can effectively improve the overall rigidity of the guard plate 2 while reducing the weight of the protective shell 1. The cross-section of the reinforcing rib 14 is trapezoidal, with the narrow side of the trapezoid facing the outer surface of the guard plate 2 and the wide side facing the inner surface of the guard plate 2. This design can reduce the amount of material used while ensuring strength.

[0026] The protective housing 1 has locating pins 13 at both ends, which are embedded in the end through holes of the protective plate 2. The locating pins 13 are made of stainless steel, which has good corrosion resistance and mechanical strength, ensuring the precise positioning of the protective housing 1 during installation. The outer surface of the locating pins 13 is threaded with a thread pitch of 1mm to 2mm. The thread design allows the locating pins 13 to be firmly fixed in the through holes of the protective plate 2, while also facilitating disassembly and replacement.

[0027] The specific implementation process of this utility model is as follows: First, two protective plates 2 are connected by hinges 3 to form an integral structure. Then, an insulation layer 4 and an elastic support 5 are installed sequentially on the inner wall of the protective plate 2. The two ends of the spring column of the elastic support 5 are fixedly connected to the inner wall of the protective plate 2 and the outer surface of the insulation layer 4, respectively. Next, an epoxy resin layer, a ceramic microparticle reinforcement layer, and a fluorocarbon coating are sequentially coated on the outer surface of the protective plate 2 to form a corrosion-resistant coating 6. Then, sealing components are installed at both ends of the protective shell 1. The annular sealing ring 7 is embedded in the end groove of the protective plate 2, and an appropriate adjusting shim 9 is placed on the outside of the annular sealing ring 7 according to the pipe diameter. Afterward, the two protective plates 2 are fixed and the sealing ring 7 is pressed by the locking mechanism 8. The anti-slip teeth of the locking plate cooperate with the protrusions on the outer surface of the protective plate 2 to prevent the locking plate from loosening. Finally, a positioning pin 13 is installed at the end of the protective plate 2, and the one-way valve 12 of the drain hole 11 is checked to see if it is working properly. Once the entire installation process is completed, the protective housing 1 can be put into use. During the operation of the thermal pipeline, the elastic support 5 can adapt to the thermal expansion and contraction of the pipeline, the sealing component can effectively prevent moisture from seeping in, and the guide groove 10 and the drain hole 11 can promptly discharge any moisture or liquid that may seep in, thereby ensuring the long-term stable operation of the protective housing 1.

[0028] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0029] First, when installing the protective shell 1, the two semi-circular protective plates 2 are connected by hinges 3 to form an integral structure. The pins in the hinges 3 have anti-detachment caps at both ends, made of nylon, to prevent the pins from falling off due to long-term use. Simultaneously, the hinge plate surface is anodized, with an anodized layer thickness of 10μm to 20μm. This design effectively improves the corrosion resistance of the hinges 3 in complex environments, ensuring long-term stable operation. Next, the insulation layer 4 and elastic support components 5 are installed sequentially on the inner wall of the protective plate 2. The elastic support component 5 consists of multiple spring columns, each with a flexible sleeve made of polytetrafluoroethylene (PTFE), a material with excellent resistance to moisture corrosion. The spring columns are evenly distributed along the axial direction of the protective plate 2 and are fixedly connected at both ends to the inner wall of the protective plate 2 and the outer surface of the insulation layer 4, respectively, thereby achieving adaptive compensation for the expansion or contraction of the thermal pipeline caused by temperature changes. This design allows the protective housing 1 to fit tightly against the outer wall of the heat pipe, preventing loosening or gaps caused by thermal expansion and contraction.

[0030] Next, an epoxy resin layer, a ceramic microparticle reinforcement layer, and a fluorocarbon coating are sequentially coated on the outer surface of the protective plate 2 to form a corrosion-resistant coating 6. The bottom epoxy resin layer, with a thickness of 0.2 mm to 0.5 mm, is applied to the outer surface of the protective plate 2 via a spraying process, providing basic corrosion protection. The middle ceramic microparticle reinforcement layer is formed via an electrostatic spraying process, with ceramic microparticles having a diameter of 10 μm to 50 μm and a thickness of 0.3 mm to 0.8 mm. This structure significantly improves the mechanical strength and wear resistance of the coating. The top fluorocarbon coating is applied via a roller coating process, with a thickness of 0.1 mm to 0.3 mm. The fluorocarbon coating has excellent UV resistance and self-cleaning ability, reducing the impact of the external environment on the protective shell 1 during long-term use. The above multi-layer structure forms a complete corrosion-resistant coating 6 through layer-by-layer stacking, thereby effectively improving the corrosion resistance of the protective shell 1 in complex environments.

[0031] Subsequently, sealing components are installed at both ends of the protective housing 1. An annular sealing ring 7 is embedded in the end groove of the protective plate 2, and an adjusting shim 9 is positioned on the outside of the annular sealing ring 7. The thickness of the adjusting shim 9 can be adjusted according to the diameter of the thermal pipe to accommodate pipes of different specifications. The locking mechanism 8 includes two symmetrically arranged locking plates. One end of the locking plate is rotatably connected to the protective plate 2 via a pin, and the other end is fixedly connected to the protective plate 2 via bolts. The inner side of the locking plate is provided with anti-slip teeth, which cooperate with the protrusions on the outer surface of the protective plate 2. This design effectively prevents the locking plate from loosening during use. Furthermore, a limiting block is positioned on the inner side of the locking plate. The limiting block is made of hard rubber, and its surface is provided with anti-slip textures. These textures cooperate with the anti-slip teeth on the inner side of the locking plate, further improving the stability of the locking mechanism 8. Through the above design, the sealing components can effectively prevent external moisture from penetrating into the interior of the protective housing 1, thereby protecting the dry state of the insulation layer 4.

[0032] A flow guide groove 10 is provided on the inner wall of the protective shell 1. The flow guide groove 10 extends axially along the protective plate 2 and has an arc-shaped cross-section. It is used to guide moisture or liquid that may seep into the protective shell 1 to the drain holes 11 at both ends. The drain holes 11 are located at the ends of the protective plate 2, and a one-way valve 12 is installed at the outlet of the drain hole 11. The one-way valve 12 opens outward to prevent external moisture from flowing back into the protective shell 1. The design of the flow guide groove 10, through its arc-shaped cross-section and axial extension, effectively guides moisture or liquid, thereby avoiding the long-term retention of moisture inside the protective shell 1 and reducing the risk of the insulation layer 4 becoming damp.

[0033] The insulation layer 4 is composed of multiple layers of composite materials, including a heat insulation layer near the outer wall of the pipe and a moisture-absorbing layer near the inner wall of the protective plate 2. The heat insulation layer is made of aerogel, which has an extremely low thermal conductivity and can effectively reduce heat loss from the thermal pipeline. The moisture-absorbing layer is made of activated carbon fiber, which has a strong adsorption capacity and can absorb trace amounts of moisture that may penetrate into the protective shell 1, thus keeping the insulation layer 4 dry. The heat insulation layer and the moisture-absorbing layer are fixedly connected by silicone sealant, which has good high-temperature resistance and bonding strength, and can maintain a stable bonding effect in high-temperature environments.

[0034] The outer surface of the protective plate 2 is provided with reinforcing ribs 14, which are intersectingly distributed along the axial and circumferential directions of the protective plate 2 to form a grid structure. The reinforcing ribs 14 are made of aluminum alloy, which has high strength and low density, effectively improving the overall rigidity of the protective plate 2 while reducing the weight of the protective shell 1. The cross-section of the reinforcing ribs 14 is trapezoidal, with the narrow side of the trapezoid facing the outer surface of the protective plate 2 and the wide side facing the inner surface of the protective plate 2. This design can reduce the amount of material used while ensuring strength, thereby optimizing the overall performance of the protective shell 1.

[0035] Finally, locating pins 13 are installed at both ends of the protective housing 1, and the locating pins 13 are embedded in the end through holes of the protective plate 2. The locating pins 13 are made of stainless steel, which has good corrosion resistance and mechanical strength, ensuring the precise positioning of the protective housing 1 during installation. The outer surface of the locating pins 13 is threaded with a thread pitch of 1mm to 2mm. This design allows the locating pins 13 to be firmly fixed in the through holes of the protective plate 2, while also facilitating disassembly and replacement. After the entire installation process is completed, the protective housing 1 is ready for use.

[0036] During the operation of the heating pipeline, the elastic support 5 can adapt to the thermal expansion and contraction of the pipeline, the sealing component can effectively prevent moisture infiltration, and the guide groove 10 and drain hole 11 can promptly discharge any moisture or liquid that may have seeped in, thereby ensuring the long-term stable operation of the protective shell 1. Through the above steps and design, this utility model solves the problem of insufficient corrosion resistance of existing heating pipeline outer protective structures in complex environments, while optimizing the convenience of installation and sealing performance, and improving the operating efficiency and service life of the heating pipeline.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat pipe anti-corrosion and heat-insulating outer protective structure, comprising a protective shell (1) and a sealing assembly, characterized in that: The protective shell (1) is composed of two semi-circular arc-shaped protective plates (2). The two protective plates (2) are connected by a hinge (3) to form a whole. The inner wall of the protective shell (1) is provided with a heat insulation layer (4). An elastic support member (5) is provided between the heat insulation layer (4) and the protective plate (2). The outer surface of the protective shell (1) is coated with a corrosion-resistant coating (6) made of multiple composite materials. Sealing components are provided at both ends of the protective shell (1). The sealing components include an annular sealing ring (7) and a locking mechanism (8). The annular sealing ring (7) is embedded in the end groove of the protective plate (2). The locking mechanism (8) fixes the two protective plates (2) with bolts and presses the sealing ring (7).

2. The anti-corrosion and heat-preservation outer protection structure for heat pipes according to claim 1, characterized in that: The elastic support (5) includes multiple spring columns, which are evenly distributed along the axial direction of the protective plate (2). Each spring column is fitted with a flexible sleeve made of polytetrafluoroethylene. The two ends of the spring column are fixedly connected to the inner wall of the protective plate (2) and the outer surface of the insulation layer (4), respectively.

3. The anti-corrosion and heat-preservation outer protection structure for heat pipes according to claim 1, characterized in that: The sealing assembly also includes an adjusting shim (9), which is located on the outside of the annular sealing ring (7). The adjusting shim (9) is made of a polymer composite material. The locking mechanism (8) includes two symmetrically arranged locking plates. One end of the locking plate is rotatably connected to the guard plate (2) by a pin, and the other end is fixedly connected to the guard plate (2) by a bolt. The inner side of the locking plate is provided with anti-slip teeth.

4. The anti-corrosion and heat-preservation outer protection structure for heat pipes according to claim 1, characterized in that: The inner wall of the protective shell (1) is provided with a flow guide groove (10), which extends along the axial direction of the protective plate (2). The cross section of the flow guide groove (10) is arc-shaped. The end of the protective plate (2) is provided with a drain hole (11), and a one-way valve (12) is installed at the outlet of the drain hole (11).

5. The anti-corrosion and heat-preservation outer protection structure for heat pipes according to claim 1, characterized in that: The corrosion-resistant coating (6) includes an epoxy resin layer as the bottom layer, a ceramic microparticle reinforcement layer as the middle layer, and a fluorocarbon coating as the top layer. The epoxy resin layer has a thickness of 0.2 mm to 0.5 mm, the ceramic microparticle reinforcement layer has a thickness of 0.3 mm to 0.8 mm, and the fluorocarbon coating has a thickness of 0.1 mm to 0.3 mm.

6. The anti-corrosion and heat-preservation outer protection structure for heat pipes according to claim 1, characterized in that: The insulation layer (4) includes a heat insulation layer near the outer wall of the pipe and a moisture-absorbing layer near the inner wall of the protective plate (2). The heat insulation layer is made of aerogel, and the moisture-absorbing layer is made of activated carbon fiber. The heat insulation layer and the moisture-absorbing layer are fixedly connected by silicone sealant.

7. The anti-corrosion and heat-preservation outer protection structure for heat pipes according to claim 1, characterized in that: The outer surface of the guard plate (2) is provided with reinforcing ribs (14). The reinforcing ribs (14) are distributed crisscrossingly along the axial and circumferential directions of the guard plate (2) to form a grid structure. The cross-section of the reinforcing ribs (14) is trapezoidal, with the narrow side of the trapezoid facing the outer surface of the guard plate (2) and the wide side facing the inner surface of the guard plate (2).

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