Heat insulation structure and method for heat distribution pipeline

Abstract

The invention discloses a heat distribution pipeline heat preservation structure which comprises a pipeline, the outer ring wall of the pipeline is sleeved with a protection sleeve ring, the two ends of the pipeline are both sleeved with plugging plates, the outer ring walls of the plugging plates are detachably connected with outer ring plates, the opposite side walls of the two outer ring plates are detachably connected with two protection plates, and the two protection plates are of a semicircular structure. Heat gathering rings are evenly connected to the outer ring wall of the pipeline in an embedded mode, a compact layer detachably sleeves the inner wall of the protective sleeve ring, a storage layer detachably sleeves the inner wall of the compact layer, a guide layer detachably sleeves the inner wall of the storage layer, and an anti-corrosion layer is connected to the outer wall of the protective sleeve ring, so that the anti-corrosion performance can be improved; the heat preservation effect is prevented from being affected by corrosion of the pipeline, the protective ferrule and components of the pipeline, even the pipeline is directly out of action, meanwhile, the pressure generated during burying can be supported through the arranged protective plate, the problem that the pipeline and the components of the pipeline are damaged under the pressure is solved, and the service life of the pipeline is prolonged. Through the two points, the service life of the pipeline can be effectively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of thermal pipe insulation structures, and in particular to a thermal pipe insulation structure and a method thereof. Background Art

[0002] Thermal pipelines are pipe network structures used to transport heat sources. They are mainly used to transport heat sources for building heating and to ensure the heat inside the building. Because heat will be lost during the transportation process, in order to ensure the preservation of heat and reduce the loss rate of the transportation process, thermal pipelines are designed. They can effectively reduce the heat consumption during the transportation process and ensure the heating effect.

[0003] The current thermal insulation measures for thermal pipelines mainly involve sheathing a thermal insulation layer on the outside of the pipeline to reduce the temperature loss rate in the pipeline, thereby achieving the thermal insulation effect. However, for a longer transportation journey, the temperature will still be lost too much, and the thermal insulation layer outside the pipeline is easily squeezed and overlooked by the underground soil when the pipeline is buried underground for a long time, resulting in a reduction in the service life of the pipeline. Therefore, a thermal insulation structure and method for a thermal pipeline are proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to increase the service life of the thermal pipeline, reduce the pipeline from being overlooked and squeezed by the soil, and at the same time improve the thermal insulation performance of the pipeline to reduce the rate of temperature loss. For this purpose, a thermal pipeline insulation structure and method are provided.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a thermal insulation structure of a thermal pipeline, comprising a pipeline, a protective collar is sleeved on the outer ring wall of the pipeline, sealing plates are sleeved on both ends of the pipeline, the outer ring wall of the sealing plate is detachably connected to the outer ring plate, and the opposite side walls of the two outer ring plates are detachably connected to two protective plates, the two protective plates are semicircular structures, the outer ring wall of the pipeline is evenly inlaid with a heat-collecting ring, the inner wall of the protective collar is detachably sleeved with a dense layer, the inner wall of the dense layer is detachably sleeved with a storage layer, the inner wall of the storage layer is detachably sleeved with a guide layer, the guide layer is fixedly connected to the outer ring wall of the pipeline through its inner wall and fits with the heat-collecting ring, the outer walls of the two ends of the pipeline are sleeved with sealing plates, and the sealing plates are detachably connected to the side walls of the two ends of the protective collar.

[0006] As a preferred technical solution of the present invention, the guide layer, the storage layer and the dense layer have different densities, and the closer to the protective ring, the smaller the density; the inner ring wall of the protective ring is inlaid with a tin layer, and the tin layer is composed of tin and cotton, wherein the cotton layer is connected to the protective ring, the tin layer is fitted with the dense layer, and the outer wall of the protective ring away from the tin layer is fixedly connected with an anti-corrosion layer.

[0007] Preferably, the tin layer can improve the thermal insulation effect and reflect the heat back to the dense layer, so that the heat dissipated outward can be offset by the reflected heat to form a heat protection layer, which has a high efficiency thermal insulation effect. The anti-corrosion layer can improve the corrosion resistance of the protective ring and increase its service life.

[0008] As a preferred technical solution of the present invention, the inner wall of the pipe is evenly provided with grooves, and the grooves are of an inclined structure. The inner wall of the pipe is provided with intermediate grooves, and the inner wall of the intermediate grooves is evenly fixedly connected with a heat conducting plate, and the heat conducting plate is of an inclined structure corresponding to the grooves. The side walls on both sides of the heat conducting plate are evenly fixedly connected with support plates, and the support plates connected to each heat conducting plate are staggered with each other. The opening of the intermediate grooves is detachably sealed with a closed plate, and the closed plate is of an annular structure.

[0009] Preferably, the established slots can activate the heat preservation effect through the function of the hollow thermal conductivity bottom, and the established heat conduction plates and support plates can increase the temperature in the slots rapidly and evenly, thereby reducing the efficiency of temperature dissipation to the outside by reducing the temperature difference.

[0010] As a preferred technical solution of the present invention, the protective plate is a semicircular structure, and honeycomb holes are provided inside the side walls of the protective plate. Slots are evenly provided in the middle of the top side walls at both ends of one of the protective plates, and card slots are provided on both side walls in the slots and close to the bottom. The card slots are conical structures, and a plug-in plate is inserted in the slots. The plug-in plate is provided with two hard rubber plates with toughness. The two plug-ins are far away from each other and fixedly connected with card plates on the side walls close to the bottom edge. The card plates are buckled in the card slots, and three springs are evenly fixedly connected between the opposite side walls of the two plug-ins.

[0011] Preferably, the protective ring and the pipe can be protected by setting up a protective plate, because the protective plate can support the burial soil, thereby reducing the pressure caused by the soil on the pipe and the protective ring, avoiding damage to the pipe and the protective ring due to pressure, and increasing their service life.

[0012] As a preferred technical solution of the present invention, one end of the pipe is fixedly connected with a splicing joint, and the splicing joint is a step-like structure. The inner wall of the end of the pipe away from the splicing joint is provided with a docking groove, and the shape of the inner wall of the docking groove corresponds to the splicing joint. The pipe is inserted into the docking groove through the splicing joint for assembly and splicing. The side wall of the pipe with the docking groove is provided with an inner groove, and the inner groove is a hollow annular structure.

[0013] Preferably, one end of the pipe is connected to the splicing joint and a docking groove opposite to the splicing joint is opened in the other end. When the two pipes are spliced ​​together, the splicing joint only needs to be inserted into the corresponding docking groove, which can shorten the stroke of the connection between the two pipes and form a double-layer structure, thereby improving the thermal insulation performance of the connection.

[0014] As a preferred technical solution of the present invention, a clamp is provided on one side of the pipe, and the clamp is two semicircular structures. The edges on both sides of the clamp that are far away from each other are fixedly connected with connecting extension plates, and three through holes are evenly opened on each connecting extension plate, and tightening bolts are inserted in the through holes. A semicircular inner anti-slip layer is fixedly connected to the inner wall of each clamp, and the two clamps are connected at the joint of the splicing joint and the docking groove by bolts, and three heat insulation grooves are opened in each clamp.

[0015] Preferably, the two clamps are connected at the connection between the splicing joint and the docking groove by bolts. The inner anti-slip layer can increase the stability after the connection, and the heat insulation groove can improve the thermal insulation of the clamp itself and reduce the rate of temperature dissipation.

[0016] A thermal insulation method for a thermal pipeline, the specific thermal insulation method is as follows:

[0017] When the heat in the pipeline is dissipated outward, it is first transferred into the slot. The heat can be evenly distributed and filled into the slot through the guidance of the heat conduction plate and the support plate. As the temperature in the slot increases, the temperature difference between the heat source in the slot and the pipe can be reduced, thereby reducing the dissipation speed of the heat source inside the pipe and achieving the effect of heat preservation. In addition, because the slot is hollow, the heat conductivity can be reduced.

[0018] The guide layer, storage layer and dense layer are sequentially sleeved on the outer wall of the pipe, and the density of the three layers decreases as they go outwards, which can increase the resistance to heat transfer outwards and reduce the rate of temperature loss. In this way, heat can be accumulated in the area closest to the pipe. As the heat accumulates, the temperature difference between it and the intermediate groove will be reduced, thereby reducing the rate of heat dissipation from the heat source.

[0019] Two protective plates are added outside the pipeline. The combination of the two protective plates can form a relatively closed space, which can achieve heat storage and reduce the rate of heat loss from the heat source in the pipeline. At the same time, through the assembly of the two protective plates, an external support structure can be established on the outside of the pipeline to provide support for the soil used for burial, avoiding problems such as damage to the pipeline due to the pressure of the soil;

[0020] Connect the splicing joints and butt grooves of the two pipes, and then clamp the two clamps at the connection between the splicing joint and the butt groove to reinforce the connection between the two and ensure the stability of the connection. At the same time, the butt groove and insulation groove set up can reduce the temperature loss rate at the joint. Because the splicing joint is inserted into the butt groove, the stroke of the connection can be shortened and a double-layer structure can be formed, which effectively improves the thermal insulation performance.

[0021] The present invention has the following advantages: firstly, by setting up a guide layer, a storage layer and a dense layer on the outer wall of the pipeline, the heat transfer rates of the three layers are different due to their different densities, and the heat transfer speed is slower as it moves outward, thereby improving the thermal insulation performance. At the same time, heat can be accumulated in the guide layer, the storage layer and the dense layer, thereby reducing the temperature difference between the internal temperature of the three layers and the temperature of the heat source in the pipeline, thereby further reducing the speed of heat transfer, ensuring that the temperature remains in a considerable temperature range during long-distance transportation and will not be excessively reduced, thereby improving the thermal insulation performance;

[0022] Secondly, connecting the anti-corrosion layer on the outer wall of the protective collar can increase the anti-corrosion performance, prevent the pipeline and the protective collar and its components from being affected by corrosion and affecting the insulation effect, or even causing the pipeline to lose its function directly. At the same time, the protective plate can support the pressure generated during burial, avoiding the problem of damage to the pipeline and its components under pressure. The above two points can effectively improve the service life of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a three-dimensional structure of a pipeline according to a preferred embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of a half-section structure of an outer protective layer of a preferred embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a local three-dimensional structure of a pipeline in a preferred embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the dissected structure of a protective plate according to a preferred embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the exploded structure of a protective ferrule according to a preferred embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the pipe splicing plane structure of a preferred embodiment of the present invention.

[0030] Explanation of the reference numerals: 1. Pipe; 2. Protective ring; 3. Sealing plate; 4. Outer ring plate; 5. Protective plate; 6. Clamp; 7. Inner anti-slip layer; 8. Connecting extension plate; 9. Splicing joint; 10. Heat-collecting ring; 11. Dense layer; 12. Storage layer; 13. Guide layer; 14. Inter-groove; 15. Groove; 16. Heat-conducting plate; 17. Support plate; 18. Sealed plate; 19. Honeycomb hole; 20. Slot; 21. Card slot; 22. Insert plate; 23. Card plate; 24. Spring; 25. Tin layer; 26. Anti-corrosion layer; 27. Docking groove; 28. Inner groove; 29. ​​Insulation groove. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Embodiment 1

[0033] Please refer to Figure 1-3 6. A thermal pipeline insulation structure and method of the present invention comprises a pipeline 1, a protective collar 2 is sleeved on the outer wall of the pipeline 1, and sealing plates 3 are sleeved on both ends of the pipeline 1, the outer wall of the sealing plate 3 is detachably connected to the outer plate 4, and the opposite side walls of the two outer plates 4 are detachably connected to two protective plates 5, and the two protective plates 5 are semicircular structures. The outer wall of the pipeline 1 is evenly inlaid with a heat-collecting ring 10, the inner wall of the protective collar 2 is detachably sleeved with a dense layer 11, the inner wall of the dense layer 11 is detachably sleeved with a storage layer 12, and the inner wall of the storage layer 12 is detachably sleeved with a guide layer 13, the guide layer 13 is fixedly connected to the outer wall of the pipeline 1 through its inner wall and fits with the heat-collecting ring 10, the outer walls of both ends of the pipeline 1 are sleeved with sealing plates 3, and the sealing plates 3 are detachably connected to the side walls of both ends of the protective collar 2;

[0034] The guide layer 13, the storage layer 12 and the dense layer 11 have different densities, and the closer to the protective ring 2, the smaller the density. The inner ring wall of the protective ring 2 is inlaid with a tin layer 25, and the tin layer 25 is composed of tin and cotton, wherein the cotton layer is connected to the protective ring 2, the tin layer 25 is fitted with the dense layer 11, and the outer wall of the protective ring 2 away from the tin layer 25 is fixedly connected with an anti-corrosion layer 26.

[0035] As a preferred effect of this embodiment: as the heat dissipates, it will be transferred to the outer wall of the pipe 1, and the heat can be gathered and absorbed by the heat collecting ring 10, and then the absorbed heat will be transferred to the guide layer 13, and then transferred outward through the guide layer 13, the storage layer 12 and the dense layer 11 in sequence. Because the density is smaller as it goes outward, the temperature is transferred outward more slowly, thereby forming a heat preservation effect, and the heat that is not transferred out in time will accumulate in the guide layer 13, the storage layer 12 and the dense layer 11 to form a heat energy layer. The temperature of the heat energy layer gradually increases, which shortens the temperature difference between it and the heat source, thereby improving the heat preservation effect on the original basis;

[0036] The tin layer 25 can reflect heat and reflect the dissipated heat back toward the pipe 1, so that the heat and the temperature dissipated outwards cancel each other out, thereby forming a protective layer to reduce the rate of heat loss. The anti-corrosion layer 26 can improve the anti-corrosion performance of the protective ring 2 and increase the service life of the pipe 1.

[0037] Embodiment 2

[0038] Please refer to Figure 1 and 4 The inner wall of the pipe 1 is evenly provided with grooves 15, and the grooves 15 are of an inclined structure. An intermediate groove 14 is provided in the circle wall of the pipe 1. The inner circle wall in the intermediate groove 14 is evenly fixedly connected with a heat conducting plate 16, and the heat conducting plate 16 is of an inclined structure corresponding to the groove 15. The side walls of the heat conducting plate 16 are evenly fixedly connected with support plates 17, and the support plates 17 connected to each heat conducting plate 16 are staggered with each other. The opening of the intermediate groove 14 is detachably sealed and connected with a sealing plate 18, and the sealing plate 18 is of an annular structure.

[0039] As a preferred effect of this embodiment: when the heat in the pipeline 1 dissipates to the outside, it will first enter the slot 14. The heat conducting plate 16 and the support plate 17 can be set up to allow the heat to be evenly and quickly filled into the slot 14, which can shorten the temperature difference between the slot 14 and the heat source in the pipeline 1, thereby reducing the rate of heat source temperature dissipation and improving the insulation effect. At the same time, because the slot 14 is hollow, its own heat conduction rate is low, thereby achieving the insulation effect.

[0040] Embodiment 3

[0041] Please refer to Figure 1 and 5 The protective plate 5 is a semicircular structure, and a honeycomb hole 19 is opened inside the side wall of the protective plate 5. A slot 20 is evenly opened in the middle of the top side wall at both ends of one of the protective plates 5. A card slot 21 is opened in the slot 20 and on both side walls close to the bottom. The card slot 21 is a conical structure. A plug-in plate 22 is inserted into the slot 20. The plug-in plate 22 is provided with two hard rubber plates with toughness. The two plug-ins 22 are far away from each other and fixedly connected with a card plate 23 on the side wall close to the bottom edge. The card plate 23 is buckled and connected in the card slot 21. Three springs 24 are evenly fixedly connected between the opposite side walls of the two plug-ins 22.

[0042] As a preferred effect of this embodiment: the two protective plates 5 are brought close to each other, and the plug plate 22 is pre-aligned with the slot 20, and then the plug plate 22 is pressed and inserted into the slot 20. At this time, the plug plate 22 is forced to shrink, and as the plug plate 22 is inserted, the card plate 23 is aligned with the card slot 21 and driven by the spring 24 to return the two plug plates 22 to their original positions, and the card plate 23 is inserted into the card slot 21 at the same time, so that the two protective plates 5 are tightly connected. The protective plate 5 can support the pressure formed by the soil to prevent the pressure from damaging the pipeline 1 and the protective ring 2. At the same time, a heat cavity will be formed between the closed protective plate 5 and the protective ring 2. By gradually increasing the temperature in the heat cavity, a protective cavity can be formed, thereby keeping the pipeline 1 warm.

[0043] Embodiment 4

[0044] Please refer to Figure 1 and 7 , one end of the pipe 1 is fixedly connected with a splicing joint 9, and the splicing joint 9 is a stepped structure. A docking groove 27 is provided on the inner wall of the end of the pipe 1 away from the splicing joint 9, and the shape of the inner wall of the docking groove 27 corresponds to the splicing joint 9. The pipe 1 is inserted into the docking groove 27 through the splicing joint 9 for assembly and splicing. An inner groove 28 is provided inside the side wall of the pipe 1 with the docking groove 27, and the inner groove 28 is a hollow annular structure. A clamp 6 is set on one side of the pipe 1. The clamp 6 is two semicircular structures. The edges of the clamp 6 on both sides away from each other are fixedly connected with connecting extension plates 8. Three through holes are evenly opened on each connecting extension plate 8, and tightening bolts are inserted in the through holes. A semicircular inner anti-slip layer 7 is fixedly connected to the inner wall of each clamp 6. The two clamps 6 are connected to the joint of the splicing joint 9 and the docking groove 27 by bolts, and three heat insulation grooves 29 are provided in each clamp 6.

[0045] As a preferred effect of this embodiment: when two pipes 1 need to be spliced, the splicing joint 9 is inserted into the docking groove 27, and the splicing joint 9 is not completely inserted into the docking groove 27, so that a double-layer structure is formed at the connection, thereby improving the basic thermal insulation performance, and then the two clamps 6 are connected to the connection between the splicing joint 9 and the docking groove 27 by screws, thereby improving the stability of the connection between the splicing joint 9 and the docking groove 27. At the same time, by opening the inner groove 28 and the heat insulation groove 29, the thermal conductivity is improved, the rate of heat loss is reduced, and a good thermal insulation effect is achieved.

[0046] Specifically, when the present invention is used, when the heat source heat transported by the pipeline 1 is dissipated outward, it will first be transferred into the slot 14, and the heat will be evenly distributed and filled into the slot 14 through the guidance of the heat conducting plate 16 and the support plate 17. As the temperature in the slot 14 increases, the temperature difference between the heat source in the slot 14 and the heat source in the pipeline 1 can be reduced, thereby reducing the dissipation speed of the heat source inside the pipeline 1, achieving the effect of heat preservation, and because the slot 14 is in a hollow state, the heat conductivity can be reduced, and then the blocked heat continues to diffuse outward, and the guide layer 13, the storage layer 12 and the dense layer are sequentially sleeved on the outer wall of the pipeline 1. 11, and the density of the three decreases as it goes outward, which can increase the resistance to heat transfer outward and reduce the rate of temperature loss. In this way, heat can be accumulated in the area closest to the pipe 1. As the heat accumulates, the temperature difference between it and the inside of the slot 14 will be reduced, thereby reducing the rate of heat dissipation from the heat source. The tin layer 25 can improve the thermal insulation effect and reflect the heat back to the dense layer 11. In this way, the heat dissipated outward and the reflected heat can be offset to form a heat protection layer, which has an efficient thermal insulation effect. At the same time, because the anti-corrosion layer 26 can increase the anti-corrosion performance, it can avoid the pipe 1 and The protective collar 2 and its components are affected by corrosion, which affects the insulation effect and even makes the pipeline 1 directly lose its function. Two protective plates 5 are added to the outside of the pipeline 1. The combination of the two protective plates 5 can form a relatively closed space, which can achieve heat storage and reduce the rate of heat loss from the heat source in the pipeline 1. At the same time, through the assembly of the two protective plates 5, an external support structure can be established on the outside of the pipeline 1, which can provide support for the soil used for burial and prevent the pipeline 1 from being damaged due to the pressure of the soil. In addition, because the interior of the protective plate 5 is a honeycomb hole 19 structure, the thermal conductivity can be reduced, so that the protective plate 5 and the protective ring 2 form an insulation cavity. As the heat dissipates, the temperature in the cavity can be increased, thereby forming an insulation layer for the pipeline 1. The splicing joints 9 and the docking grooves 27 of the two pipelines 1 are connected, and then the two clamps 6 are clamped at the connection between the splicing joints 9 and the docking grooves 27, so as to reinforce the connection between the two and ensure the stability of the connection. At the same time, the established docking grooves 27 and the insulation grooves 29 can reduce the temperature loss rate at the joints. Because the splicing joint 9 is inserted into the docking grooves 27, the stroke of the connection can be shortened and a double-layer structure can be formed, which effectively improves the insulation performance.

[0047] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0048] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal pipeline insulation structure, comprising a pipeline (1), characterized in that: The outer wall of the pipeline (1) is sleeved with a protective collar (2), and both ends of the pipeline (1) are sleeved with blocking plates (3), and the outer wall of the blocking plate (3) is detachably connected to an outer plate (4), and the two opposite side walls of the two outer plates (4) are detachably connected to two protective plates (5), and the two protective plates (5) are of a semicircular structure. The outer wall of the pipeline (1) is evenly inlaid with a heat collecting ring (10), and the inner wall of the protective collar (2) is detachably connected to the outer wall. A dense layer (11) is removably sleeved, and a storage layer (12) is removably sleeved on the inner wall of the dense layer (11), and a guide layer (13) is removably sleeved on the inner wall of the storage layer (12), and the guide layer (13) is fixedly connected to the outer wall of the pipeline (1) through its inner wall and fits with the heat collecting ring (10), and the outer walls at both ends of the pipeline (1) are sleeved with sealing plates (3), and the sealing plates (3) are removably connected to the side walls at both ends of the protective ring (2).

2. A thermal pipe insulation structure according to claim 1, characterized in that: The guide layer (13), the storage layer (12) and the dense layer (11) have different densities, and the closer to the protective ring (2), the smaller the density. The inner ring wall of the protective ring (2) is inlaid with a tin layer (25), and the tin layer (25) is composed of tin and cotton, wherein the cotton layer is connected to the protective ring (2), and the tin layer (25) is fitted with the dense layer (11). The outer wall of the protective ring (2) away from the tin layer (25) is fixedly connected with an anti-corrosion layer (26).

3. A thermal pipe insulation structure according to claim 1, characterized in that: The inner wall of the pipeline (1) is uniformly provided with grooves (15), and the grooves (15) are of an inclined structure. The inner wall of the pipeline (1) is provided with an intermediate groove (14), and the inner wall of the intermediate groove (14) is uniformly fixedly connected with a heat conducting plate (16), and the heat conducting plate (16) is of an inclined structure corresponding to the groove (15). The side walls of both sides of the heat conducting plate (16) are uniformly fixedly connected with support plates (17), and the support plates (17) connected to each heat conducting plate (16) are staggered with each other. The opening of the intermediate groove (14) is detachably sealed and connected with a sealing plate (18), and the sealing plate (18) is of an annular structure.

4. A thermal pipe insulation structure according to claim 1, characterized in that: The protective plate (5) is a semicircular structure. Honeycomb holes (19) are provided inside the side walls of the protective plate (5). A slot (20) is evenly provided in the middle of the top side walls at both ends of one of the protective plates (5). A clamping slot (21) is provided in the slot (20) and on both side walls close to the bottom. The clamping slot (21) is a conical structure. A plug-in plate (22) is inserted into the slot (20). The plug-in plate (22) is provided with two hard rubber plates with toughness. The two plug-in plates (22) are fixedly connected with a clamping plate (23) on the side walls that are away from each other and close to the bottom edge. The clamping plate (23) is buckled and connected in the clamping slot (21). Three springs (24) are evenly fixedly connected between the opposite side walls of the two plug-in plates (22).

5. A thermal pipe insulation structure according to claim 1, characterized in that: One end of the pipe (1) is fixedly connected to a splicing joint (9), the splicing joint (9) being a quasi-step-shaped structure; an inner wall of the end of the pipe (1) away from the splicing joint (9) is provided with a docking groove (27), the inner wall shape of the docking groove (27) corresponding to that of the splicing joint (9); the pipe (1) is inserted into the docking groove (27) through the splicing joint (9) for assembly and splicing; an inner groove (28) is provided inside the side wall of the pipe (1) provided with the docking groove (27), and the inner groove (28) is a hollow annular structure.

6. A thermal pipe insulation structure according to claim 1, characterized in that: A clamp (6) is provided on one side of the pipe (1), and the clamp (6) is two semicircular structures. The two side edges of the clamp (6) that are away from each other are fixedly connected with connecting extension plates (8), and each connecting extension plate (8) is evenly provided with three through holes, and tightening bolts are inserted into the through holes.

7. A thermal pipe insulation structure according to claim 6, characterized in that: A semicircular inner anti-slip layer (7) is fixedly connected to the inner wall of each clamp (6), and two clamps (6) are connected at the joint of the splicing joint (9) and the docking groove (27) by bolts. Three heat insulation grooves (29) are provided in each clamp (6).

8. A method for heat preservation of a thermal pipeline, using the heat preservation structure of a thermal pipeline according to claim 1, characterized in that: The specific insulation methods are as follows: T1. When the heat in the pipe (1) is dissipated outward, it is first transferred into the slot (14). The heat can be evenly distributed and filled into the slot (14) through the guidance of the heat conducting plate (16) and the support plate (17). As the temperature in the slot (14) increases, the temperature difference between the heat source in the slot (14) and the pipe (1) can be reduced, thereby reducing the dissipation speed of the heat source inside the pipe (1), achieving a heat preservation effect. In addition, because the slot (14) is in a hollow state, the heat conductivity can be reduced. T2. The guide layer (13), the storage layer (12) and the dense layer (11) are sequentially sleeved on the outer wall of the pipe (1), and the density of the three decreases as they go outwards. This can increase the resistance to heat transfer outwards and reduce the rate of temperature loss. In this way, heat can be accumulated in the area closest to the pipe (1). As heat accumulates, the temperature difference between the area and the intermediate groove (14) will be reduced, thereby reducing the rate of heat dissipation from the heat source. T3. Two protective plates (5) are added outside the pipeline (1). The two protective plates (5) can form a relatively closed space, which can achieve heat storage and reduce the rate of heat loss from the heat source in the pipeline (1). At the same time, through the assembly of the two protective plates (5), an external support structure can be established on the outside of the pipeline (1), which can provide support for the soil used for burial, thereby preventing the pipeline (1) from being damaged due to the pressure of the soil. T4. Connect the splicing joints (9) and the butt joint grooves (27) of the two pipes (1), and then clamp the two clamps (6) at the connection between the splicing joint (9) and the butt joint groove (27), so as to reinforce the connection between the two and ensure the stability of the connection. At the same time, the butt joint groove (27) and the heat insulation groove (29) can reduce the temperature loss rate at the joint. Because the splicing joint (9) is inserted into the butt joint groove (27), the stroke of the connection can be shortened and a double-layer structure can be formed, thereby effectively improving the thermal insulation performance.

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