A heat insulation structure for heating pipelines that is easy to construct and its construction method

Abstract

This invention provides an easy-to-construct insulation structure for heating pipelines, comprising: a heating pipeline consisting of an outer pipeline and an inner pipeline; a pressure plate movably fitted onto the surface of the heating pipeline; and a base whose two ends are fixedly connected to the outer wall of the shell. The base is a hollow structure, and a fixing structure is provided on the surface of the heating pipeline inside the base, while a pressing structure is also provided on the surface of the heating pipeline outside the base. This application utilizes a double-layer heating pipeline for heat source delivery and simultaneously delivers an auxiliary heat source inside the heating pipeline. Heat exchange is achieved by heating the auxiliary heat source, thus achieving insulation. Insulation strips and layers are installed on the surface of the heating pipeline to achieve insulation. A spliced ​​insulation layer is used for installation. The base supports the heating pipeline while the fixing and pressing structures compress and fix the insulation layer, achieving vacuum preservation to improve the insulation effect. Auxiliary heat channels are heated inside the shell to prevent heat loss.

Description

Technical Field

[0001] This invention relates to an insulation structure for heating pipelines that is easy to construct and its construction method. Background Technology

[0002] Heating pipelines are specialized pipelines used to transport heat sources. Insulation of heating pipelines is a measure to reduce heat loss from the pipelines, their accessories, and equipment to the surrounding environment. Its function is to reduce heat loss of the heating medium during transportation, save fuel, and ensure heating quality to meet user needs. The primary function of insulation is to reduce heat loss of the heating medium during transportation, save fuel, and ensure heating quality to meet user needs. Another function of insulation is to prevent the outer surface temperature of the pipeline from becoming excessively high, avoiding burns to operation and maintenance personnel. Insulation materials should have characteristics such as low thermal conductivity, low water absorption, high mechanical strength, no deformation or deterioration within the operating temperature range, low flammability, non-corrosiveness to metals, ease of construction and molding, and low cost.

[0003] There are several construction methods for insulation structures of heating pipelines, including coating, pouring, filling, binding, and prefabrication. Among them, binding and prefabrication structures are widely used. Although heating pipelines have insulation structures, heat loss still occurs when the heat source is transported over long distances. Moreover, on-site construction and installation are not conducive to the effective installation of the insulation structure of the heating pipeline, which brings inconvenience to the construction. Furthermore, relying solely on the insulation structure on the surface of the heating pipeline to achieve heat insulation treatment can easily lead to heat loss, especially when used in environments with large temperature differences over long distances, which affects the performance of the heating pipeline. Summary of the Invention

[0004] In order to solve the technical problem that heat loss is still easy to occur when heating pipelines are transported over long distances, the present invention provides a heat insulation structure for heating pipelines that is easy to construct and its construction method.

[0005] To address the shortcomings of existing technologies, this application employs a double-layer heating pipeline for heat source transportation, and simultaneously transports an auxiliary heat source within the heating pipeline. This enables heat exchange by heating the auxiliary heat source, thus achieving insulation during long-distance transport of heat through the pipeline and preventing severe heat loss.

[0006] To further address the problems in existing technologies, insulation strips and insulation layers are installed on the surface of the heating pipes to achieve the insulation effect. The insulation layers are installed using a spliced ​​design, and the heating pipes are supported by a base. At the same time, a fixing structure and a compression structure are set on the surface of the heating pipes to compress and fix the insulation layer, which facilitates rapid installation and improves construction convenience.

[0007] To further address the problems in the existing technology, the base is connected through the shell, which provides thermal insulation protection at the connection of the heating pipe. Air can be extracted from the base and the shell inside to achieve vacuum preservation, thereby improving the insulation effect and avoiding heat loss at the connection, which would increase economic costs. At the same time, auxiliary heating channels are installed inside the shell to prevent heat loss.

[0008] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0009] This invention provides an insulation structure for heating pipelines that is easy to construct, the insulation structure for heating pipelines comprising:

[0010] The heating pipeline consists of an outer pipeline and an inner pipeline. An auxiliary heating channel for the flow of heat exchange medium is formed between the outer pipeline and the inner pipeline. The surface of the outer pipeline is uniformly wrapped with insulation tape, and the surface of the insulation tape is respectively attached to a lower insulation layer and an upper insulation layer distributed vertically. The connection between the lower insulation layer and the upper insulation layer is provided with a mutually adhering surface.

[0011] The housing has mounting holes on both sides for installing heating pipes. The connection between adjacent heating pipes is located inside the housing. A pressure plate is movably fitted onto the surface of the heating pipe, and the outer diameter of the pressure plate is larger than the diameter of the mounting hole.

[0012] The base has two ends that are fixedly connected to the outer wall of the shell. The base is a hollow structure and the top edge is provided with a sealing strip that fits with the lower insulation layer. The surface of the heating pipe inside the base is provided with a fixing structure, and the surface of the heating pipe is also provided with a pressing structure located on the outside of the base.

[0013] In this technical solution, the length of the outer pipe is greater than that of the inner pipe. Both ends of the outer pipe are fixedly connected to flanges, and adjacent flanges are fitted together. The edges of the flanges are inserted through bolts, and the ends of the bolts are threadedly connected to nuts. A heat-resistant ring located on one side of the inner pipe is fixedly connected to the inner wall of the outer pipe. The heat-resistant rings inside adjacent outer pipes are fitted together and located at the flange connection.

[0014] In this technical solution, the end of the outer pipe is fixedly connected to the connecting pipe, an auxiliary heater is fixedly installed in the middle of the connecting pipe, both ends of the connecting pipe extend into the auxiliary heating channel formed by the outer pipe and the inner pipe, a fluid channel for transporting heating fluid is formed between the inner pipe and the heat-resistant ring, and the connecting pipe is located on one side of the flange.

[0015] In this technical solution, the pressure plate is a circular ring structure. The side wall of the pressure plate is fixedly connected to the sealing ring. The sealing ring is movably sleeved with the surfaces of the upper and lower insulation layers, respectively. The pressure plate is located inside both sides of each shell. The inner wall of the shell is fixedly connected to the heat insulation layer. The sealing ring is in close contact with the surface of the heat insulation layer. Both the upper and lower insulation layers have protrusions fixedly connected to their surfaces. The protrusion near the pressure plate has an inclined surface, and the inner ring of the sealing ring is in close contact with the surface of the protrusion.

[0016] In this technical solution, the side wall of the pressure plate is fixedly connected to several evenly distributed long screws, and each pair of long screws is respectively connected to the internal threads of both ends of the threaded tube. The sealing ring on one side of the pressure plate is correspondingly set on the side of the mounting hole, and the bottom of the sealing ring has a notch that communicates with the inside of the mounting hole.

[0017] In this technical solution, a vacuum pump is fixedly installed inside the housing. The vacuum pump is fixedly connected to two negative pressure pipes. One of the negative pressure pipes is connected through the housing at its end, and the other negative pressure pipe is fixedly connected to a one-way valve.

[0018] In this technical solution, the fixing structure includes a lower pressure plate and an upper pressure plate, both of which are semi-circular ring structures. The lower pressure plate is attached to the surface of the lower insulation layer, and the upper pressure plate is attached to the surface of the upper insulation layer. Both ends of the upper pressure plate are rotatably connected to connectors, and the other end of the connector is rotatably connected to a plug rod. Both ends of the lower pressure plate are provided with flanges, and the plug rod is inserted through the flanges. The bottom of the plug rod is threadedly connected to a knob, and the knob contacts the bottom surface of the flange.

[0019] In this technical solution, the clamping structure includes a clamp, which is attached to the surface of the upper insulation layer. Both ends of the clamp are rotatably connected to a movable component, which is attached to the outer wall of the base. The movable component is fixedly connected to both sides of the base by studs. There are several clamping structures, and the clamping structures and fixed structures are distributed alternately.

[0020] In this technical solution, a partition is fixedly connected inside the base, a slot is opened on the top edge of the base, the slot is fitted and connected to the lower pressure plate, a sealing strip is fixedly connected inside the slot, and the lower pressure plate is attached to the surface of the sealing strip. A pressure strip is provided inside the clamp, and the pressure strip is attached to the upper insulation layer and the lower insulation layer respectively, and the surface of the pressure strip contacts the connector.

[0021] A construction method for an insulation structure of a heating pipeline that is easy to construct, the construction method comprising the following steps:

[0022] S101, heating pipe installation: the pressure plate is fitted onto the surface of the heating pipe and then the flange is welded. The heating pipe insulation tape is wrapped around the surface of the outer pipe. The heating pipe is passed through the installation hole and both ends are placed inside the shell. The flange is installed inside the shell. The adjacent heating pipes are connected by bolts and nuts, and the heat-resistant rings are pressed together to achieve a seal at the connection.

[0023] S102, the shell is sealed on both sides. The protrusion is fixed inside the shell. The protrusion is made of the same material as the insulation tape and is wrapped around the surface of the upper and lower insulation layers to form a protrusion with a bevel. Rotating the threaded tube drives the long screws on both sides to move to both sides, which drives the pressure plate to move to the inner wall of the shell, and drives the sealing ring to fit with the heat insulation layer inside the shell. At the same time, the inner ring of the sealing ring fits with the protrusion to achieve compression and fixation, thus achieving a seal at the connection between the shell and the heating pipe. At this time, the notch on one side of the sealing ring is located at the mounting hole.

[0024] S103, Insulation layer installation: Multiple shells are fixed by the base. The lower pressure plate is placed inside the slot in the base, and the lower insulation layer is placed on the surface of the lower pressure plate. Then the heating pipe is placed on the surface of the lower insulation layer, and the upper insulation layer is placed on the top surface of the heating pipe. The upper and lower insulation layers are tightly bonded by the bonding surfaces. The pressure strip is placed at the joint of the bonding surfaces and pressed tightly. The upper pressure plate is placed on the surface of the upper insulation layer, and the insertion rod is driven through the flanges at both ends of the lower pressure plate. Heating pipes of different sizes are installed through the connectors. The knobs are tightened to fix the lower and upper insulation layers. At the same time, the connectors press the pressure strip to fix the bonding surface of the upper and lower insulation layers.

[0025] S104, auxiliary fixing, place the clamp on the surface of the upper and lower insulation layers, and make it fit the outer wall of the shell by rotating the movable part. Use the stud to install and fix the clamp, and press the heating pipe against the sealing strip surface of the base to achieve the seal at the connection between the insulation layer and the base.

[0026] S105 features heat insulation treatment. A vacuum pump is activated to extract air from the shell and base. Air from inside the base enters the shell through a notch. A partition allows the vacuum pump inside each shell to extract air from the base on both sides, creating a vacuum inside the shell and base. A one-way valve prevents outside air from entering. Fluid is transported through the inner pipe of the heating pipeline, and auxiliary heating fluid is transported between the outer and inner pipes. An auxiliary heater is activated to heat the fluid in the connecting pipe, ensuring the heat in the auxiliary heating channel is greater than the heat in the fluid channel, thus achieving heat exchange and auxiliary heating during the heating pipeline transport process. This prevents heat loss during long-distance fluid transport in the heating pipeline.

[0027] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0028] The positive and progressive effects of this invention are as follows:

[0029] The aforementioned proposed insulation structure and construction method for a heating pipeline facilitates construction. It employs a double-layer heating pipeline for heat source delivery, with an auxiliary heat source simultaneously delivered within the pipeline. Heating the auxiliary heat source enables heat exchange, providing insulation during long-distance pipeline transport and preventing significant heat loss. Insulation strips and layers are installed on the pipeline surface for insulation, using a spliced ​​insulation layer installation method. A base supports the pipeline while a fixing and compression structure on the pipeline surface secures the insulation layer, facilitating rapid installation and improving construction convenience. The base is connected to the shell, providing thermal insulation protection at the pipeline connection points. Air extraction from the shell allows for vacuum preservation, enhancing insulation and preventing heat loss at the connection points, thus reducing economic costs. Simultaneously, auxiliary heating channels within the shell further prevent heat loss. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the internal front view of the present invention.

[0032] Figure 3 This is a three-dimensional structural diagram of the upper insulation layer of the present invention.

[0033] Figure 4 This is a front view of the structure of the lower insulation layer of the present invention.

[0034] Figure 5 This is a three-dimensional structural diagram of the external pipe of the present invention.

[0035] Figure 6 This is a three-dimensional structural diagram of the upper pressure plate of the present invention.

[0036] Figure 7 This is a side view of the housing structure of the present invention.

[0037] Figure 8 This is a side view of the structure of the lower pressure plate of the present invention.

[0038] Figure 9 This is a side view of the clamp structure of the present invention.

[0039] Figure 10 This is a three-dimensional structural diagram of the clamping part of the present invention.

[0040] Explanation of reference numerals in the attached figures

[0041] 100. External pipe; 101. Internal pipe; 102. Auxiliary heating channel; 103. Fluid channel; 104. Heat-resistant ring; 105. Flange; 106. Bolt; 107. Nut; 108. Insulation tape; 109. Lower insulation layer; 110. Upper insulation layer; 111. Fitting surface; 112. Protrusion; 200. Shell; 201. Insulation layer; 202. Pressure plate; 203. Sealing ring; 204. Long screw; 205. Threaded pipe; 206. 1. Vacuum pump; 207. Negative pressure pipe; 208. One-way valve; 209. Connecting pipe; 210. Auxiliary heater; 211. Notch; 300. Base; 301. Partition plate; 302. Mounting hole; 303. Sealing strip; 304. Groove; 400. Lower pressure plate; 401. Upper pressure plate; 402. Connector; 403. Insert rod; 404. Knob; 405. Flange; 406. Pressure strip; 500. Clamp; 501. Moving part; 502. Stud. Detailed Implementation

[0042] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0043] like Figure 1-10 As shown, the insulation structure and construction method of the easy-to-construct heating pipeline include:

[0044] A heating pipeline is composed of an outer pipeline 100 and an inner pipeline 101. An auxiliary heating channel 102 for the flow of heat exchange medium is formed between the outer pipeline 100 and the inner pipeline 101. An insulation tape 108 is uniformly wrapped around the surface of the outer pipeline 100, and a lower insulation layer 109 and an upper insulation layer 110 are respectively attached to the surface of the insulation tape 108. A bonding surface 111 is provided at the connection between the lower insulation layer 109 and the upper insulation layer 110.

[0045] The housing 200 has mounting holes 302 on both sides for installing heating pipes. The connection between adjacent heating pipes is located inside the housing 200. A pressure plate 202 is movably sleeved on the surface of the heating pipe. The outer diameter of the pressure plate 202 is larger than the diameter of the mounting hole 302.

[0046] The base 300 is fixedly connected to the outer wall of the housing 200 at both ends. The base 300 is a hollow structure and the top edge is provided with a sealing strip 303 that fits with the lower insulation layer 109. The surface of the heating pipe inside the base 300 is provided with a fixing structure, and the surface of the heating pipe is also provided with a pressing structure located outside the base 300.

[0047] In this technical solution, the length of the outer pipe 100 is greater than the length of the inner pipe 101. Both ends of the outer pipe 100 are fixedly connected to flanges 105. Adjacent flanges 105 are fitted together. The edges of the flanges 105 are inserted through bolts 106, and the ends of the bolts 106 are threadedly connected to nuts 107. A heat-resistant ring 104 located on one side of the inner pipe 101 is fixedly connected to the inner wall of the outer pipe 100. The heat-resistant rings 104 inside adjacent outer pipes 100 are fitted together and located at the flange 105 connection.

[0048] In this technical solution, the end of the outer pipe 100 is fixedly connected to the connecting pipe 209, and an auxiliary heater 210 is fixedly installed in the middle of the connecting pipe 209. Both ends of the connecting pipe 209 extend into the auxiliary heating channel 102 formed by the outer pipe 100 and the inner pipe 101. A fluid channel 103 for transporting heating fluid is formed between the inner pipe 101 and the heat-resistant ring 104. The connecting pipe 209 is located on one side of the flange 105.

[0049] In this technical solution, the pressure plate 202 has a circular structure. The side wall of the pressure plate 202 is fixedly connected to the sealing ring 203. The sealing ring 203 is movably sleeved with the surfaces of the upper insulation layer 110 and the lower insulation layer 109, respectively. The pressure plate 202 is located inside both sides of each housing 200. The inner wall of the housing 200 is fixedly connected to the heat insulation layer 201. The sealing ring 203 is in close contact with the surface of the heat insulation layer 201. The surfaces of the upper insulation layer 110 and the lower insulation layer 109 are both fixedly connected with protrusions 112. The protrusion 112 near the side of the pressure plate 202 is provided with an inclined surface, and the inner ring of the sealing ring 203 is in close contact with the surface of the protrusion 112.

[0050] In this technical solution, the side wall of the pressure plate 202 is fixedly connected to a number of evenly distributed long screws 204. Each pair of long screws 204 are respectively connected to the internal threads of both ends of the threaded tube 205. The sealing ring 203 on one side of the pressure plate 202 is correspondingly set on one side of the mounting hole 302. The bottom of the sealing ring 203 has a notch 211 and communicates with the inside of the mounting hole 302.

[0051] In this technical solution, a vacuum pump 206 is fixedly installed inside the housing 200. The vacuum pump 206 is fixedly connected to two negative pressure pipes 207. One of the negative pressure pipes 207 is connected through the housing 200 at its end, and the other negative pressure pipe 207 is fixedly connected to a one-way valve 208.

[0052] In this technical solution, the fixing structure includes a lower pressure plate 400 and an upper pressure plate 401. Both the lower pressure plate 400 and the upper pressure plate 401 are semi-circular ring structures. The lower pressure plate 400 is attached to the surface of the lower insulation layer 109, and the upper pressure plate 401 is attached to the surface of the upper insulation layer 110. Both ends of the upper pressure plate 401 are rotatably connected to the connector 402, and the other end of the connector 402 is rotatably connected to the insert rod 403. Both ends of the lower pressure plate 400 are provided with flanges 405. The insert rod 403 is inserted through the flanges 405. The bottom of the insert rod 403 is threadedly connected to the knob 404, and the knob 404 contacts the bottom surface of the flange 405.

[0053] In this technical solution, the clamping structure includes a clamp 500, which is attached to the surface of the upper insulation layer 110. Both ends of the clamp 500 are rotatably connected to the movable part 501. The movable part 501 is attached to the outer wall of the base 300. The movable part 501 is fixedly connected to both sides of the base 300 by studs 502. There are several clamping structures, and the clamping structures and fixed structures are distributed alternately.

[0054] In this technical solution, a partition plate 301 is fixedly connected inside the base 300, and a slot 304 is provided on the top edge of the base 300. The slot 304 is fitted and connected to the lower pressure plate 400. A sealing strip 303 is fixedly connected inside the slot 304, and the lower pressure plate 400 is in contact with the surface of the sealing strip 303. A pressure strip 406 is provided inside the clamp 500. The pressure strip 406 is in contact with the upper insulation layer 110 and the lower insulation layer 109 respectively, and the surface of the pressure strip 406 contacts the connector 402.

[0055] A construction method for an insulation structure of a heating pipeline that is easy to construct, the construction method comprising the following steps:

[0056] S101, heating pipe installation: the pressure plate 202 is fitted onto the surface of the heating pipe and then the flange 105 is welded. The heating pipe insulation tape 108 is wrapped around the surface of the outer pipe 100. The heating pipe is passed through the installation hole 302 and both ends are placed inside the shell 200. The flange 105 is installed inside the shell 200. The adjacent heating pipes are connected by the use of bolts 106 and nuts 107, and the heat-resistant rings 104 are pressed together to achieve a seal at the connection.

[0057] S102, the shell 200 is sealed on both sides, and the protrusion 112 is fixed inside the shell 200. The protrusion 112 is made of the same material as the insulation tape 108 and is wrapped around the surface of the upper insulation layer 110 and the lower insulation layer 109 to form a protrusion 112 with a bevel. Rotating the threaded tube 205 drives the long screws 204 on both sides to move to both sides, which drives the pressure plate 202 to move to the inner wall of the shell 200, which drives the sealing ring 203 to fit with the heat insulation layer 201 inside the shell 200. At the same time, the inner ring of the sealing ring 203 fits with the protrusion 112 to achieve compression and fixation, thereby achieving the seal at the connection between the shell 200 and the heating pipe. At this time, the notch 211 on one side of the sealing ring 203 is located at the mounting hole 302.

[0058] S103, Insulation layer installation: Multiple housings 200 are fixed by the base 300. The lower pressure plate 400 is placed inside the slot 304 of the base 300. The lower insulation layer 109 is placed on the surface of the lower pressure plate 400, and then the heating pipe is placed on the surface of the lower insulation layer 109. The upper insulation layer 110 is then placed on the top surface of the heating pipe, and the upper insulation layer 110 and the lower insulation layer 109 are tightly bonded together through the bonding surface 111. Finally, the pressure strip 406 is placed... Press the joint of the mating surface 111, place the upper pressure plate 401 on the surface of the upper insulation layer 110, and drive the insertion rod 403 through the inside of the flanges 405 at both ends of the lower pressure plate 400. Install heating pipes of different sizes through the connector 402, and tighten the knob 404 to fix the lower insulation layer 109 and the upper insulation layer 110. At the same time, the connector 402 presses the pressure strip 406 to fix the mating joint of the upper insulation layer 110 and the lower insulation layer 109.

[0059] S104, auxiliary fixing, place the clamp 500 on the surface of the upper insulation layer 110 and the lower insulation layer 109, and make it fit against the outer wall of the shell 200 by rotating the movable part 501. Use the stud 502 to install and fix the clamp 500, and press the heating pipe against the sealing strip 303 surface of the base 300 to achieve sealing at the connection between the insulation layer and the base 300.

[0060] S105, heat insulation treatment, start vacuum pump 206 to extract air from the inside of housing 200 and base 300. Air inside base 300 enters housing 200 through notch 211. The partition 301 can realize that the vacuum pump 206 inside each housing 200 extracts air from the inside of the base 300 on both sides, so that a vacuum is formed inside housing 200 and base 300. After the vacuum is formed, the one-way valve 208 prevents outside air from entering. The inner pipe 101 of the heating pipeline transports fluid, and auxiliary heat fluid is transported between the outer pipe 101 and the inner pipe 101. The auxiliary heater 210 is started to heat the fluid in the connecting pipe 209, so that the heat in the auxiliary heat channel 102 is greater than the heat in the fluid channel 103, realizing heat exchange and auxiliary heating during the transportation of fluid in the heating pipeline, avoiding the problem of heat loss caused by long-distance transportation of fluid in the heating pipeline.

[0061] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A construction method for an easy-to-construct thermal insulation structure for heating pipelines, characterized in that: The insulation structure of the heating pipeline includes: The heating pipeline consists of an outer pipeline (100) and an inner pipeline (101). An auxiliary heating channel (102) for the flow of heat exchange medium is formed between the outer pipeline (100) and the inner pipeline (101). The surface of the outer pipeline (100) is uniformly wrapped with an insulation tape (108), and the surface of the insulation tape (108) is respectively attached to a lower insulation layer (109) and an upper insulation layer (110) distributed vertically. The connection between the lower insulation layer (109) and the upper insulation layer (110) is provided with a bonding surface (111) that is in contact with each other. The housing (200) has mounting holes (302) on both sides for installing heating pipes. The connection between adjacent heating pipes is located inside the housing (200). A pressure plate (202) is movably sleeved on the surface of the heating pipe. The outer diameter of the pressure plate (202) is larger than the diameter of the mounting hole (302). The base (300) is fixedly connected to the outer wall of the shell (200) at both ends. The base (300) is a hollow structure and the top edge is provided with a sealing strip (303) that fits with the lower insulation layer (109). The surface of the heating pipe inside the base (300) is provided with a fixing structure, and the surface of the heating pipe is also provided with a pressing structure located outside the base (300). The construction method includes the following steps: S101, heating pipe installation: the pressure plate (202) is fitted onto the surface of the heating pipe and then the flange (105) is welded. The heating pipe insulation tape (108) is wrapped around the surface of the outer pipe (100). The heating pipe is passed through the installation hole (302) and both ends are placed inside the shell (200). The flange (105) is installed inside the shell (200). The adjacent heating pipes are connected by bolts (106) and nuts (107), and the heat-resistant rings (104) are pressed together to achieve a seal at the connection. S102, the shell (200) is sealed on both sides. The protrusion (112) is fixed inside the shell (200). The protrusion (112) is made of the same material as the insulation tape (108) and is wrapped around the surface of the upper insulation layer (110) and the lower insulation layer (109) to form a protrusion (112) with a slope. The threaded tube (205) is rotated to drive the long screws (204) on both sides to move to both sides, and the pressure plate (202) is moved to the inner wall of the shell (200). The sealing ring (203) is brought into contact with the heat insulation layer (201) inside the shell (200). At the same time, the inner ring of the sealing ring (203) is pressed and fixed with the protrusion (112) to achieve the seal at the connection between the shell (200) and the heating pipe. At this time, the notch (211) on one side of the sealing ring (203) is located at the mounting hole (302). S103, Insulation layer installation: Multiple housings (200) are fixed by the base (300). The lower pressure plate (400) is placed inside the slot (304) opened in the base (300). The lower insulation layer (109) is placed on the surface of the lower pressure plate (400). The heating pipe is then placed on the surface of the lower insulation layer (109). The upper insulation layer (110) is then placed on the top surface of the heating pipe. The upper insulation layer (110) and the lower insulation layer (109) are tightly bonded together by the bonding surface (111). The pressure strip (406) is then placed on the surface of the lower insulation layer (109). Press the joint of the mating surface (111) tightly, place the upper pressure plate (401) on the surface of the upper insulation layer (110), and drive the plug rod (403) through the inside of the flange (405) at both ends of the lower pressure plate (400). Install heating pipes of different sizes through the connector (402), and tighten the knob (404) to fix the lower insulation layer (109) and the upper insulation layer (110). At the same time, the connector (402) presses the pressure strip (406) to fix the mating joint of the upper insulation layer (110) and the lower insulation layer (109). S104, auxiliary fixing, place the clamp (500) on the surface of the upper insulation layer (110) and the lower insulation layer (109), and make it fit against the outer wall of the shell (200) by rotating the movable part (501), and use the stud (502) to install and fix the clamp (500), press the heating pipe against the sealing strip (303) surface of the base (300) to achieve the sealing at the connection between the insulation layer and the base (300); S105, heat insulation treatment, start vacuum pump (206) to extract air from the inside of shell (200) and base (300), air inside base (300) enters shell (200) through notch (211), set partition (301) to realize vacuum pump (206) inside each shell (200) to extract air from the inside of base (300) on both sides, so that vacuum is formed inside shell (200) and base (300), and outside air is prevented from entering through one-way valve (208), fluid is transported through inner pipe (101) of heating pipeline, and auxiliary heat fluid is transported between outer pipe (100) and inner pipe (101), auxiliary heater (210) is started to heat the fluid in connecting pipe (209), so that the heat in auxiliary heat channel (102) is greater than the heat in fluid channel (103), and heat exchange is realized to carry out auxiliary heating in the process of heating pipeline transportation, avoiding heat loss caused by long-distance transportation of fluid in heating pipeline.

2. The construction method of claim 1, wherein: The length of the outer pipe (100) is greater than that of the inner pipe (101). Both ends of the outer pipe (100) are fixedly connected to flanges (105). Adjacent flanges (105) are fitted together. The edge of the flange (105) is inserted through bolts (106), and the end of the bolts (106) is threadedly connected to nuts (107). The inner wall of the outer pipe (100) is fixedly connected to a heat-resistant ring (104) located on one side of the inner pipe (101). The heat-resistant rings (104) inside adjacent outer pipes (100) are fitted together and located at the flange (105) connection.

3. The construction method of claim 2, wherein: The end of the outer pipe (100) is fixedly connected to the connecting pipe (209). An auxiliary heater (210) is fixedly installed in the middle of the connecting pipe (209). Both ends of the connecting pipe (209) extend into the auxiliary heating channel (102) formed by the outer pipe (100) and the inner pipe (101). A fluid channel (103) for transporting heating fluid is formed between the inner pipe (101) and the heat-resistant ring (104). The connecting pipe (209) is located on one side of the flange (105).

4. The construction method of claim 1, wherein: The pressure plate (202) has a circular structure. The side wall of the pressure plate (202) is fixedly connected to the sealing ring (203). The sealing ring (203) is movably sleeved with the surfaces of the upper insulation layer (110) and the lower insulation layer (109) respectively. The pressure plate (202) is located inside both sides of each housing (200). The inner wall of the housing (200) is fixedly connected to the heat insulation layer (201). The sealing ring (203) is attached to the surface of the heat insulation layer (201). The surfaces of the upper insulation layer (110) and the lower insulation layer (109) are both fixedly connected with protrusions (112). The protrusion (112) near the side of the pressure plate (202) has an inclined surface, and the inner ring of the sealing ring (203) is attached to the surface of the protrusion (112).

5. The construction method of claim 1, wherein: The side wall of the pressure plate (202) is fixedly connected to several evenly distributed long screws (204). Each pair of long screws (204) is respectively connected to the internal threads of both ends of the threaded tube (205). The sealing ring (203) on one side of the pressure plate (202) is correspondingly set on one side of the mounting hole (302). The bottom of the sealing ring (203) has a notch (211) and communicates with the inside of the mounting hole (302).

6. The construction method according to claim 1, wherein: A vacuum pump (206) is fixedly installed inside the housing (200). The vacuum pump (206) is fixedly connected to two negative pressure pipes (207). One of the negative pressure pipes (207) is connected through the housing (200) at its end, and the other negative pressure pipe (207) is fixedly connected to a one-way valve (208).

7. The construction method of claim 1, wherein: The fixing structure includes a lower pressure plate (400) and an upper pressure plate (401). Both the lower pressure plate (400) and the upper pressure plate (401) are semi-circular ring structures. The lower pressure plate (400) is attached to the surface of the lower insulation layer (109), and the upper pressure plate (401) is attached to the surface of the upper insulation layer (110). Both ends of the upper pressure plate (401) are rotatably connected to the connector (402), and the other end of the connector (402) is rotatably connected to the insert rod (403). Both ends of the lower pressure plate (400) are provided with flanges (405). The insert rod (403) is inserted through the flange (405). The bottom of the insert rod (403) is threadedly connected to the knob (404), and the knob (404) contacts the bottom surface of the flange (405).

8. The construction method of claim 1, wherein: The clamping structure includes a clamp (500), which is attached to the surface of the upper insulation layer (110). Both ends of the clamp (500) are rotatably connected to the movable part (501). The movable part (501) is attached to the outer wall of the base (300). The movable part (501) is fixedly connected to both sides of the base (300) by studs (502). The number of clamping structures is several, and the clamping structures and fixed structures are distributed alternately.

9. The construction method of claim 8, wherein: The base (300) is fixedly connected to a partition (301). The top edge of the base (300) is provided with a slot (304). The slot (304) is fitted and connected to the lower pressure plate (400). A sealing strip (303) is fixedly connected inside the slot (304). The lower pressure plate (400) is in contact with the surface of the sealing strip (303). The clamp (500) is provided with a pressure strip (406). The pressure strip (406) is in contact with the upper insulation layer (110) and the lower insulation layer (109) respectively. The surface of the pressure strip (406) contacts the connector (402).

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