Heat preservation pipeline and pipeline assembly tool

Abstract

The heat preservation pipeline comprises an inner pipe, a heat preservation layer, a plug-in piece and a plug-in piece, the heat preservation layer surrounds the inner pipe, the plug-in piece is fixed to one end of the heat preservation layer, the plug-in piece is provided with a plug-in cavity with an end opening, and the plug-in piece is fixed to the other end of the heat preservation layer and communicates with the inner pipe. The two thermal insulation pipelines can be assembled only by inserting the inserting piece at the end of one thermal insulation pipeline into the inserting cavity at the end of the other thermal insulation pipeline and enabling the inserting piece to be clamped with the inserting cavity, and then all the pipelines can be assembled in the assembling mode, so that the assembling difficulty of the thermal insulation pipelines is effectively reduced, and the assembling efficiency is improved. According to the heat preservation pipeline assembly tool, the two heat preservation pipelines are fixed through the first support and the second support and driven to be close to each other, so that the heat preservation pipelines can be assembled, the assembly difficulty of the heat preservation pipelines can be effectively reduced through auxiliary assembly of the assembly tool, and convenience is provided for assembly of the heat preservation pipelines.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline equipment, and in particular to a thermal insulation pipeline and a pipeline assembly tool. Background Art

[0002] Due to the large temperature difference near the tunnel entrance and the high moisture content in the air inside the tunnel, the road surface at the tunnel entrance is prone to ice formation in winter, posing a huge threat to the driving safety of vehicles passing through.

[0003] The tunnel geothermal ice melting system is a system that collects geothermal heat and transports the heat transfer fluid to the road surface through an insulated pipe to melt snow and ice. Since there is a large amount of groundwater around the tunnel surrounding rock, water seepage inside the tunnel is very common. The existing insulated pipes mostly use porous materials such as rubber and plastic sponges as the insulation layer. After long-term contact with water, the insulation effect of the insulation pipe is greatly reduced, and even the pipe material rusts, causing the liquid inside the pipe to leak. In order to avoid pipeline failure, vacuum tubes such as the one with the publication number CN103511795A have appeared on the market for insulation. The existing vacuum tube mainly includes an outer tube, an inner tube, a vacuum cavity, an end sealing plate and a heat absorption layer. The outer tube is connected to the inner tube, and a vacuum cavity is provided between the outer tube and the inner tube. An end sealing plate is provided at one end of the outer tube, and a heat absorption layer is provided on the outer wall of the inner tube. The inner tube is longer than the outer tube, and a thread is provided on one end of the inner tube extending out of the outer tube. The inner tube is connected to the end plate of the outer tube through a thread to achieve the locking of two adjacent pipes.

[0004] Although existing vacuum tubes can lock adjacent pipes through threaded connection of the end plates of the inner and outer pipes, due to the large diameter of the pipes, the pipes need to be continuously rotated during the assembly process, which makes the assembly between the pipes difficult and requires a lot of manpower and material resources for assembly. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies, to provide an insulated pipe and a pipe assembly tool, and to solve the technical problem that the insulated pipe is difficult to assemble in the prior art.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a thermal insulation pipe, comprising: Inner tube; A thermal insulation layer enclosing the inner tube; A supply plug is fixed to one end of the thermal insulation layer, the supply plug is provided with a supply plug cavity with an end opening, and the supply plug cavity is communicated with the inner tube; and The insert is fixed to the other end of the insulation layer and communicated with the inner tube. The insert can be connected with the supply cavity by inserting with the supply cavity and form a snap connection with the supply cavity.

[0007] In some embodiments, the supply cavity is a cylindrical cavity, the insert is a cylindrical member, and the insert inserted into the supply cavity can be engaged with the supply cavity or disengaged from the engagement with the supply cavity by rotating.

[0008] In some embodiments, a plurality of spaced first limiting walls are provided in the circumferential direction of the insertion cavity, and a penetration opening is formed between adjacent first limiting walls. A plurality of spaced second limiting walls are provided in the circumferential direction of the insertion component, and the second limiting wall can penetrate the first limiting wall through the penetration opening, and can be rotated to the inner side of the first limiting wall through the rotation of the insertion component, and be clamped with the first limiting wall.

[0009] In some embodiments, the plug-in component is provided with a limit hole, and the insulation pipe also includes a limit pin, which is slidably connected to the plug-in component along the axial direction of the insulation pipe and extends out of the plug-in component, and the limit pin can be slidably inserted into the limit hole.

[0010] In some embodiments, a sliding cavity is formed between the insert and the insulation layer, and the limiting pin is provided with a limiting protrusion, and the limiting protrusion can abut against the inner wall of the sliding cavity by sliding with the limiting pin, and the insulation pipe also includes an elastic member, one end of the elastic member abuts against the inner wall of the sliding cavity, and the other end of the elastic member abuts against the limiting protrusion to drive the limiting protrusion to abut against the inner wall of the sliding cavity.

[0011] In some embodiments, a limiting sleeve is provided on the inner wall of the sliding cavity, one end of the elastic member is mounted on the limiting sleeve, and the other end of the elastic member is sleeved on the limiting pin.

[0012] In some embodiments, the thermal insulation layer includes an end plate and a vacuum thermal storage layer and a thermal insulation layer arranged in sequence from the inside to the outside, and the end plate is fixedly connected to both ends of the vacuum thermal storage layer.

[0013] In some embodiments, the thermal insulation layer includes an outer tube and a water-swellable filler. The outer tube is enclosed in the inner tube and is spaced from the inner tube to form the vacuum heat storage layer. The water-swellable filler is arranged inside the outer tube.

[0014] In some embodiments, the vacuum heat storage layer is provided with a plurality of support plates and a plurality of arc-shaped heat reflecting plates, each of the support plates is arranged at an inverse interval along the circumference of the vacuum heat storage layer, both sides of the support plates are connected to the outer tube and the inner tube, each of the arc-shaped heat reflecting plates is respectively located between the support plates, and both sides of each of the arc-shaped heat reflecting plates are fixedly connected to the support plates.

[0015] In a second aspect, the present invention provides an insulation pipe assembly tool, comprising: Quick-release bracket, A first bracket, slidably connected to the quick-release bracket; A second bracket, slidably connected to the quick-release bracket and opposite to the first bracket; The two thermal insulation pipes are respectively installed on the first bracket and the second bracket, and the two thermal insulation pipes can be clamped together by bringing the first bracket and the second bracket closer together.

[0016] Compared with the prior art, the thermal insulation pipe provided by the present invention is provided with an inner pipe, an insulation layer, an insert and an insert. The insulation layer is enclosed in the inner pipe, the insert is fixed to one end of the insulation layer, the insert is provided with an insert cavity with an end opening, and the insert is fixed to the other end of the insulation layer and connected to the inner pipe. When assembling the thermal insulation pipe, it is only necessary to insert the insert at the end of the thermal insulation pipe into the insert cavity at the end of the other thermal insulation pipe so that the insert and the insert cavity form a snap connection, and the assembly of the two thermal insulation pipes can be completed. Then, all pipes can be assembled by the above assembly method, thereby effectively reducing the difficulty of assembling the thermal insulation pipes. The thermal insulation pipe assembly tool fixes the two thermal insulation pipes through the first bracket and the second bracket, and drives the two thermal insulation pipes to move closer to each other, so as to realize the assembly of the two thermal insulation pipes. Through the auxiliary assembly of the assembly tool, the difficulty of assembling the thermal insulation pipes can be effectively reduced, the assembly time of the thermal insulation pipes can be reduced, and convenience is provided for the assembly of the thermal insulation pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the heat preservation pipe provided by an embodiment of the present invention; Figure 2 is a front view of a heat-insulating pipe provided by an embodiment of the present invention; Figure 3 is a rear view of the thermal insulation pipe provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of the internal structure of the insulation layer of the insulation pipe provided by an embodiment of the present invention; Figure 5 It is a structural schematic diagram of the sliding cavity portion of the heat preservation pipe provided by an embodiment of the present invention; Figure 6 It is a front view of the pipeline assembly tool provided by an embodiment of the present invention.

[0018] Reference numerals in the figures: 10—Inner tube 20—Insulation layer 21—Vacuum heat storage layer 22 - Insulation layer 23 - End plate 30 - Insert 31 - second limiting wall 32 - sliding cavity 40 - for plug-in 41—supply cavity 42—limiting hole 50—limiting pin 51—limiting protrusion 60—elastic member 70—quick-install support 80—first bracket 90—second bracket 211—support plate 212—arc heat reflector 221—outer tube 222—water expansion filling 321—limiting sleeve 411—first limiting wall 412—opening. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem in the prior art that the assembly of the thermal insulation pipe is difficult, the present invention provides a thermal insulation pipe, which can effectively reduce the assembly difficulty of the thermal insulation pipe.

[0021] The thermal insulation pipes provided in the embodiment of the present invention are connected to form a pipe structure for conveying heat transfer fluid, such as Figure 1-4 As shown, the insulated pipe includes an inner tube 10, an insulating layer 20, an insert 30 and an insert 40, the insulating layer 20 is enclosed in the inner tube 10; the insert 40 is fixed to one end of the insulating layer 20, and the insert 40 is provided with an insert cavity 41 with an end opening, and the insert cavity 41 is connected with the inner tube 10; the insert 30 is fixed to the other end of the insulating layer 20 and is connected with the inner tube 10, and the insert 30 can be connected with the insert cavity 41 by inserting with the insert cavity 41 and form a snap connection with the insert cavity 41.

[0022] Specifically, the insulation pipe is provided with an inner pipe 10, an insulation layer 20, a plug-in supply 40 and an insert 30. The insulation layer 20 is enclosed in the inner pipe 10, the plug-in supply 40 is fixed to one end of the insulation layer 20, the plug-in supply 40 is provided with an insert supply cavity 41 with an open end, and the insert 30 is fixed to the other end of the insulation layer 20 and connected to the inner pipe 10. When assembling the insulation pipe, it is only necessary to insert the insert 30 at the end of the insulation pipe into the insert supply cavity 41 at the end of the other insulation pipe so that the insert 30 and the insert supply cavity 41 form a snap connection, and the assembly of the two insulation pipes can be completed. Then, all pipes can be assembled by the above assembly method, thereby effectively reducing the difficulty of assembling the insulation pipe. The assembled insulation pipe can transmit heat transfer liquid through the inner pipe 10.

[0023] In this embodiment, the inner tube 10 is a hollow steel tube made of 304 steel, which has the characteristics of high strength and corrosion resistance.

[0024] It is understandable that the thermal insulation layer 20 can be thermal insulation cotton attached to the surface of the inner tube 10 , or any thermal insulation structure such as a vacuum cavity enclosed in the inner tube 10 .

[0025] In one embodiment, if Figure 4 As shown, the thermal insulation layer 20 includes a vacuum thermal storage layer 21, a thermal insulation layer 22 and an end plate 23. The vacuum thermal storage layer 21 and the thermal insulation layer 22 are arranged in sequence from the inside to the outside, and the end plate 23 is fixedly connected to both ends of the vacuum thermal storage layer 21 and the thermal insulation layer 22. Specifically, the heat transfer liquid inside the inner tube 10 can be kept warm by the double thermal insulation of the vacuum thermal storage layer 21 and the thermal insulation layer 22, which can effectively prevent the heat loss of the heat transfer liquid.

[0026] In one embodiment, if Figure 4 As shown, the thermal insulation layer 22 includes an outer tube 221 and a water-expandable filler 222. The outer tube 221 is enclosed in the inner tube 10 and is spaced apart from the inner tube 10 to form a vacuum heat storage layer 21. The water-expandable filler 222 is arranged inside the outer tube 221. Specifically, the outer tube 221 can provide external support for the thermal insulation pipe and simultaneously provide support for the internal water-expandable filler 222. When the water-expandable filler 222 is installed on the tunnel roadbed and poured together with the concrete, it can absorb the moisture inside the cement, and then expand to form a water barrier and form a good thermal insulation effect, thereby preventing heat loss.

[0027] In this embodiment, the outer tube 221 is a hollow annular body made of a material with a very low thermal conductivity.

[0028] In this embodiment, the water-swellable filler 222 forms a porous structure after expansion. The expansion material is made of a mixture of natural rubber, expansion agent, steel fiber, reinforcement agent, water-absorbing resin, vulcanizer, activator, and accelerator. It has the characteristic of expanding when it comes into contact with water, so that when the tunnel roadbed is installed and poured together with concrete, it can absorb moisture inside the cement, and then expand to form a water barrier. After the tunnel roadbed cement is cured, the pore water in the pores generated by the water absorption and expansion inside the insulation layer 22 also dissipates, and finally presents a porous structure with good thermal insulation effect. Due to the porous structure, the surface of the insulation layer 22 has a certain elasticity. When a large truck moves on the road surface, it can play a certain buffering role on the insulation pipe, effectively prevent the pipe from rupturing, and increase the service life of the insulation pipe.

[0029] In this embodiment, the water-swellable filler 222 contains steel fiber material inside. Since the water-swellable filler 222 contains steel fiber and other materials inside, it has a certain strength after expansion and can play a certain protective role on the insulation pipe and its internal structure.

[0030] In one embodiment, if Figure 4As shown, the vacuum heat storage layer 21 is provided with a plurality of support plates 211 and a plurality of arc-shaped heat reflecting plates 212. The support plates 211 are arranged in reverse intervals along the circumference of the vacuum heat storage layer 21. Both sides of the support plates 211 are connected to the outer tube 221 and the inner tube 10. Each arc-shaped heat reflecting plate 212 is respectively located between the support plates 211, and both sides of each arc-shaped heat reflecting plate 212 are fixedly connected to the support plates 211. Specifically, the support plate 211 can provide support for the inner tube 10 and the outer tube 221 by connecting the inner tube 10 and the outer tube 221, and can also be used to fix the arc-shaped heat reflecting plate 212. The vacuum heat storage layer 21 can be separated into an inner and outer double-layer vacuum insulation cavity by setting the arc-shaped heat reflecting plate 212. The inner insulation cavity is close to the inner tube 10, and the arc-shaped heat reflecting plate 212 can reflect the heat passing through the inner vacuum insulation cavity through the inner tube 10, so that the heat is re-radiated to the inner tube 10. The outer vacuum insulation cavity is close to the outer tube 221, and the arc-shaped heat reflecting plate 212 can reflect the heat passing through the outer vacuum insulation cavity to block external heat from entering the inner tube 10, thereby "locking" the heat of the heat transfer liquid in the inner tube 10.

[0031] In this embodiment, two sides of each support plate 211 are provided with snap-fitting grooves, and two sides of the heat reflection plate are fixed to the snap-fitting grooves.

[0032] In this embodiment, the vacuum heat storage layer 21 is a vacuum cavity structure formed between the inner tube 10 and the outer tube 221 .

[0033] In one of the embodiments, the reflective plate is a special material whose main function is to reflect heat and reduce heat absorption and transfer, thereby achieving the effect of heat insulation and heat preservation. The heat reflective plate reflects heat and reduces heat absorption through materials with high reflectivity, such as metal foil (gold, silver, nickel, aluminum) or metal-plated polyester, polyimide film, etc.

[0034] In this embodiment, the heat reflection plate is made of a thin plate with a thickness of 0.5 mm and a tin-plated surface.

[0035] It can be understood that the insert 30 can be snap-fitted with the insertion cavity 41 through friction with the insertion cavity 41, or by setting a structure on the surface and cooperating between the protruding structure and the groove on the inner wall of the insertion cavity 41 to achieve snap-fitting with the insertion cavity 41.

[0036] In this embodiment, Figure 1-3 As shown, both the plug-in component 30 and the plug-in component 40 are circular structural components, and the outer sides of the plug-in component 30 and the plug-in component 40 are connected to the outer tube 221. Both the plug-in component 30 and the plug-in component 40 are spaced apart from the end plate 23 of the insulation layer 20. The plug-in component 30 is provided with an insertion protrusion, and the insertion protrusion can be plugged into the insertion cavity 41 in the center of the plug-in component 40. After the insertion protrusion is plugged into the insertion cavity 41, the end face of the plug-in component 30 is connected to the end face of the plug-in component 40.

[0037] In one embodiment, if Figure 1-3 As shown, the supply and insertion cavity 41 is a cylindrical cavity, and the insert 30 is a cylindrical part. The insert 30 inserted into the supply and insertion cavity 41 can be engaged with the supply and insertion cavity 41 or disengaged from the engagement with the supply and insertion cavity 41 by rotating. Specifically, through the above arrangement, when assembling the insulation pipe, the end of the insulation pipe can be first inserted into the cylindrical supply and insertion cavity 41 of the adjacent pipe through the insert 30, and then the insulation pipe can be rotated to achieve the splicing assembly between the two insulation pipes. When the insulation pipe needs to be disassembled, it is only necessary to rotate the insulation pipe again to disengage the insert 30 from the supply and insertion cavity 41.

[0038] In this embodiment, the inner wall of the supply insertion cavity 41 can form an axial slide extending axially and a circumferential slide extending in the circumferential direction and connected with the axial sliding. A protrusion structure is set on the surface of the plug-in component 30. The plug-in component 30 is slidably connected to the axial slide through the protrusion structure and inserted into the supply insertion cavity 41. When it reaches the end of the supply insertion cavity 41, the insulation pipe is rotated to make the protrusion structure enter the circumferential slide, so that the plug-in component 40 can be snapped into place.

[0039] In one embodiment, if Figure 1-3 As shown, a plurality of spaced first limiting walls 411 are provided in the circumferential direction of the insertion cavity 41, and a through-hole 412 is formed between each adjacent first limiting wall 411. A plurality of spaced second limiting walls 31 are provided in the circumferential direction of the insert 30. The second limiting wall 31 can penetrate the first limiting wall 411 through the through-hole 412, and can be rotated to the inner side of the first limiting wall 411 through the rotation of the insert 30, and be clamped with the first limiting wall 411. Specifically, through the arrangement of the first limiting wall 411 and the second limiting wall 31, when the insulation pipe is spliced ​​and assembled, the first limiting wall 411 on the outside of the plug-in component 30 passes through the supply opening 412 and is plugged into the supply plug-in component 40. After the first limiting wall 411 enters the supply insertion cavity 41, the insulation pipe is rotated to overlap the first limiting wall 411 and the second limiting wall 31. The second limiting wall 31 can be blocked by the first limiting wall 411 to achieve the clamping connection between the plug-in component 30 and the supply plug-in component 40. When the insulation pipe needs to be disassembled, it is only necessary to rotate the first limiting wall 411 to offset the second limiting wall 31.

[0040] In one embodiment, if Figure 1-3As shown in FIG. 5 , the plug-in 40 is provided with a limit insertion hole 42, and the heat-insulating pipe further includes a limit insertion pin 50, which is slidably connected to the plug-in 30 along the axial direction of the heat-insulating pipe and extends out of the plug-in 30, and the limit insertion pin 50 can be slidably inserted into the limit insertion hole 42. Specifically, through the setting of the limit insertion hole 42 and the limit insertion pin 50, during the splicing and assembly process of the heat-insulating pipe, the limit can be inserted into the limit insertion hole 42, thereby preventing the relative rotation between the heat-insulating pipes, thereby realizing the locking of the heat-insulating pipe.

[0041] In one embodiment, if Figure 5 As shown, a sliding cavity 32 is formed between the insert 30 and the insulation layer 20, and the limiting pin 50 is provided with a limiting protrusion 51, and the limiting protrusion 51 can abut against the inner wall of the sliding cavity 32 by sliding with the limiting pin 50. The insulation pipe also includes an elastic member 60, one end of the elastic member 60 abuts against the inner wall of the sliding cavity 32, and the other end of the elastic member 60 abuts against the limiting protrusion 51, so as to drive the limiting protrusion 51 to abut against the inner wall of the sliding cavity 32. Specifically, through the above structure, during the process of inserting the plug-in component 30 into the supply cavity 41, one end of the limit pin 50 extends out of the plug-in component 30 and abuts against the end face of the supply plug-in component 40. The supply plug-in component 40 presses the limit pin 50, forcing the limit pin 50 to retract. When the plug-in component 30 and the supply cavity 41 are connected, the limit pin 50 can be docked with the limit hole 42 by rotating the insulation pipe. The limit pin 50 is inserted into the limit hole 42 under the elastic force of the elastic component 60, thereby limiting the relative rotation of the two insulation pipes and realizing automatic locking of the insulation pipes.

[0042] In this embodiment, when the limiting pin 50 is connected to the limiting hole 42, the first limiting wall 411 and the second limiting wall 31 are in an overlapping clamping state. Therefore, when the two insulation pipes are in the clamping state, the rotation of the two insulation pipes can be limited by the limiting pin 50, thereby achieving the locking of the insulation pipes.

[0043] In this embodiment, the elastic member 60 is a spring.

[0044] In this embodiment, Figure 1 and 5 As shown, the limiting protrusions 51 of the limiting pins 50 are connected to each other, and one of the limiting protrusions 51 extends out of the sliding cavity 32. Specifically, through this arrangement, the limiting pin 50 can be disengaged from the limiting plug hole 42 by only overcoming the elastic force of the elastic member 60 by the end of the limiting protrusion 51 extending out of the sliding cavity 32. At this time, the thermal insulation pipe can be rotated to be disassembled.

[0045] In one embodiment, a limiting sleeve 321 is provided on the inner wall of the sliding cavity 32, one end of the elastic member 60 is mounted on the limiting sleeve 321, and the other end of the elastic member 60 is sleeved on the limiting pin 50. Specifically, the elastic member 60 is stabilized by the limiting sleeve 321 and the limiting pin 50.

[0046] In this embodiment, Figure 5 As shown, the limiting sleeve 321 is arranged on the end plate 23 of the thermal insulation layer 20 .

[0047] The embodiment of the present invention also provides a thermal insulation pipe assembly tool, such as Figure 6 As shown, it includes a quick-release support 70, a first bracket 80, a second bracket 90 and two insulation pipes. The first bracket 80 is slidably connected to the quick-release support 70, and the second bracket 90 is slidably connected to the quick-release support 70 and is opposite to the first bracket 80; the two insulation pipes are respectively installed on the first bracket 80 and the second bracket 90, and the two insulation pipes can be clamped by bringing the first bracket 80 and the second bracket 90 closer together.

[0048] Specifically, when assembling two adjacent insulated pipes, the first bracket 80 and the second bracket 90 are respectively installed with adjacent insulated pipes, and then the first bracket 80 and / or the second bracket 90 are controlled to slide so that the two insulated pipes are brought closer to each other to form a plug-in connection, thereby completing the assembly of the two insulated pipes.

[0049] In this embodiment, the thermal insulation pipe assembly tool is mainly suitable for ground assembly of thermal insulation pipes. When the thermal insulation pipes are assembled underground, they are mainly assembled manually.

[0050] In this embodiment, before the insulation pipe is plugged in, the insulation pipe to be assembled is rotated as needed so that the second limiting wall 31 can pass through the passage 412 between the first limiting walls 411, and then the first bracket 80 is slid toward the direction of the second bracket 90 to plug the two insulation pipes in. After the insulation pipe is plugged in, the insulation pipe to be assembled is rotated again so that the first limiting wall 411 overlaps with the second limiting wall 31. At this time, the limiting pin 50 is docked with the limiting socket 42 and is inserted into the limiting socket 42 under the action of the spring, and finally the assembly of the insulation pipe is completed.

[0051] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A heat-insulated pipe, characterized in that: include: Inner tube; A thermal insulation layer enclosing the inner tube; A supply plug is fixed to one end of the thermal insulation layer, the supply plug is provided with a supply plug cavity with an end opening, and the supply plug cavity is communicated with the inner tube; and The insert is fixed to the other end of the insulation layer and communicated with the inner tube. The insert can be connected with the supply cavity by inserting with the supply cavity and form a snap connection with the supply cavity.

2. The thermal insulation pipe according to claim 1, characterized in that: The supply and insertion cavity is a cylindrical cavity, the inserting piece is a cylindrical piece, and the inserting piece inserted into the supply and insertion cavity can be engaged with the supply and insertion cavity or disengaged from the engagement with the supply and insertion cavity by rotating.

3. The thermal insulation pipe according to claim 1, characterized in that: A plurality of spaced first limiting walls are arranged in the circumferential direction of the insertion cavity, and a through opening is formed between each adjacent first limiting wall. A plurality of spaced second limiting walls are arranged in the circumferential direction of the insertion component, and the second limiting wall can pass through the first limiting wall through the through opening, and can be rotated to the inner side of the first limiting wall through the rotation of the insertion component, and be clamped with the first limiting wall.

4. The thermal insulation pipe according to claim 1, characterized in that: The plug-in component is provided with a limit hole, and the insulation pipe also includes a limit pin, which is slidably connected to the plug-in component along the axial direction of the insulation pipe and extends out of the plug-in component, and the limit pin can be slidably inserted into the limit hole.

5. The thermal insulation pipe according to claim 4, characterized in that: A sliding cavity is formed between the insert and the insulation layer, and the limiting pin is provided with a limiting protrusion, and the limiting protrusion can abut against the inner wall of the sliding cavity by sliding with the limiting pin. The insulation pipe also includes an elastic member, one end of the elastic member abuts against the inner wall of the sliding cavity, and the other end of the elastic member abuts against the limiting protrusion to drive the limiting protrusion to abut against the inner wall of the sliding cavity.

6. The thermal insulation pipe according to claim 5, characterized in that: The inner wall of the sliding cavity is provided with a limiting sleeve, one end of the elastic member is mounted on the limiting sleeve, and the other end of the elastic member is sleeved on the limiting pin.

7. The thermal insulation pipe according to claim 1, characterized in that: The heat preservation layer comprises an end plate, and a vacuum heat storage layer and a heat insulation layer which are arranged in sequence from the inside to the outside, and the end plate is fixedly connected to both ends of the vacuum heat storage layer.

8. The thermal insulation pipe according to claim 7, characterized in that: The thermal insulation layer includes an outer tube and a water-expandable filler. The outer tube is enclosed in the inner tube and is spaced apart from the inner tube to form the vacuum heat storage layer. The water-expandable filler is arranged inside the outer tube.

9. The thermal insulation pipe according to claim 8, characterized in that: The vacuum heat storage layer is provided with a plurality of support plates and a plurality of arc-shaped heat reflecting plates, each of the support plates is arranged at intervals in opposite directions along the circumference of the vacuum heat storage layer, two sides of the support plates are connected to the outer tube and the inner tube, each of the arc-shaped heat reflecting plates is respectively located between the support plates, and two sides of each of the arc-shaped heat reflecting plates are fixedly connected to the support plates.

10. A thermal insulation pipe assembly tool, characterized in that: include: Quick-release bracket, A first bracket, slidably connected to the quick-release bracket; A second bracket, slidably connected to the quick-release bracket and opposite to the first bracket; The two insulated pipes according to any one of claims 1 to 7 are respectively installed on the first bracket and the second bracket, and the two insulated pipes can be clamped together by bringing the first bracket and the second bracket closer together.

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