Heat supply pipeline fixing method capable of absorbing heat to extend

Abstract

The invention discloses a heat supply pipeline fixing method capable of absorbing heat to extend, which is characterized in that a fixing foundation is arranged at a position to be fixed of a heat supply pipeline, the heat supply pipeline is fixed on the fixing foundation, and the heat supply pipeline and the fixing foundation are elastically connected along the axial direction by virtue of a spring arranged along the axial direction of the heat supply pipeline. According to the invention, thermal deformation of the heat supply pipeline along the axial direction and the radial direction can be absorbed and converted, the stress of the pipeline is reduced, the protection of the large-diameter high-temperature high-pressure heat supply pipeline and special nodes thereof is better realized, and a fixing method for reducing stress is provided for uncompensated laying of the overhead heat supply pipeline; and a new way is opened up for the safety of the uncompensated directly-buried heat supply pipeline and the pipe joint thereof.

Description

Technical Field

[0001] The present invention relates to the field of heating pipelines, and particularly to a fixing method for directly buried pipelines. Background Art

[0002] Heating pipelines are a commonly used device widely applied to the long-distance transmission of heat flow media. Heating pipelines are the most commonly adopted system form for centralized heating in China. During the operation of heating pipelines, affected by thermal expansion and contraction, the deformation caused by thermal expansion and contraction will gradually accumulate and expand along the axial direction of the pipeline, and thus a great destructive effect will be formed at the stress accumulation node positions such as elbows, diameter changes, turning points, and tees of the pipeline (hereinafter simply referred to as nodes), bringing potential safety hazards and accidents. To solve this problem, it is usually necessary to set fixed structures at the node positions near the elbows, diameter changes, turning points, and tees of the heating pipeline.

[0003] In the existing fixed installation structure of heating pipelines, a fixed concrete is cast on the ground near the stress accumulation node position of the heating pipeline, and then the heating pipeline is directly fixed on the fixed concrete. In this way, the axial push-pull stress generated by the deformation of the heating pipeline due to thermal expansion and contraction in the axial direction will directly act on the fixed concrete, thereby protecting the elbows, diameter changes, turning points, or tees at the stress accumulation node positions from being damaged.

[0004] However, in this existing fixed structure, the heating pipeline is directly fixed on the fixed concrete. When the accumulated axial push-pull stress of the pipeline is too large, it is easy to cause damage to the heating pipeline at the position of the fixed concrete, bringing potential safety hazards.

[0005] In addition, CN201710285792.5 once disclosed a method for compensator-free laying of hot water pipeline galleries. In this method, fixed pipe racks are arranged at intervals in the gallery and connected to the hot water pipelines, forcibly fixing the axial free expansion and contraction of the hot water pipelines, and using the pipelines themselves to bear the stress, thereby canceling the pipeline compensators and achieving compensator-free treatment of the hot water pipelines at elbows, tees, and diameter changes. However, in this laying structure, the axial expansion deformation of the hot water pipeline still directly acts on the fixed pipe racks, and the accumulated axial deformation stress cannot be converted and dissipated. In the long run, it is still easy to cause potential safety hazards.

[0006] Therefore, how to develop a fixing technology for heating pipeline nodes that can better reduce potential safety hazards and improve the protection effect and safety performance of pipelines has become a problem to be considered and solved by those skilled in the art. Summary of the Invention

[0007] Aiming at the deficiencies of the above-mentioned existing technologies, the technical problem to be solved by the present invention is: how to provide a fixing method for heating pipelines that can better protect the stress accumulation node positions of heating pipelines, improve safety, and can absorb thermal elongation.

[0008] To solve the above technical problems, the present invention adopts the following technical solutions: A method for fixing a heat supply pipeline capable of absorbing thermal elongation, wherein a fixing foundation is arranged at a position to be fixed on the heat supply pipeline and the heat supply pipeline is fixed on the fixing foundation. It is characterized in that an axial elastic connection is formed between the heat supply pipeline and the fixing foundation by means of a spring arranged along the axial direction of the heat supply pipeline.

[0009] In this way, after the heat supply pipeline is installed and fixed according to this method, the pipeline is elastically connected to the fixing foundation by means of the axial spring. Therefore, the axial push-pull stress generated by the axial deformation accumulated by the heat supply pipeline due to thermal expansion and contraction can still act on the fixing foundation along the axial direction and be offset, so as to reduce the stress on the stress accumulation node position and form protection. At the same time, since an elastic connection is formed between the heat supply pipeline and the fixing foundation, a certain deformation space can be formed by relying on the spring, which can accommodate and absorb the accumulated deformation amount of the heat supply pipeline along the axial direction, achieving the effect of absorbing the thermal elongation of the pipeline; the existence of the spring can also better absorb and convert the energy generated by the pipeline deformation into elastic potential energy and further convert it into internal energy and dissipate it.

[0010] As an option, the position to be fixed is near the node position of the heat supply pipeline, and the fixing foundation is a fixed concrete cast with cement.

[0011] This can better ensure the safety of the node position. Wherein the node refers to the position of the elbow, diameter change, folding point or tee joint of the heat supply pipeline.

[0012] As another option, the heat supply pipeline is installed in a pipe gallery, and a number of positions to be fixed are evenly spaced in the pipe gallery to realize the segmented fixed installation of the heat supply pipeline. The fixing foundation is a partition wall or a partition installation frame fixed inside the pipe gallery along the cross-section.

[0013] In this way, a fixing method for reducing stress is provided for the non-compensated laying of the overhead heat supply pipeline in the pipe gallery, and the safety of the heat supply pipeline in the pipe gallery is better improved.

[0014] Furthermore, this method is realized by relying on a fixing and installation structure for a heat supply pipeline. The fixing and installation structure for a heat supply pipeline includes a fixing foundation, on which a vertical outer support plate is fixed. A through hole is opened in the middle of the outer support plate, and a heat supply pipe is installed through the through hole. Protective sleeves sleeved outside the heat supply pipe are also arranged on both sides of the outer support plate. The two ends of the protective sleeve and the heat supply pipe are hermetically arranged by means of end ring plates, and an installation chamber is formed between the protective sleeve and the heat supply pipe. Annular inner support plates are respectively fixed along the radial direction on the heat supply pipes on both sides of the outer support plate. Load-bearing mechanisms are arranged between each of the inner support plates on both sides and the outer support plate. The load-bearing mechanism includes a spiral load-bearing spring arranged along the axial direction and acting between the inner support plate and the outer support plate.

[0015] In this way, when the push-pull stress caused by the axial deformation of the heat supply pipeline occurs, it is offset by the spring acting on the fixed foundation, so as to avoid impacting the heat supply pipeline, especially the pipeline structure at the node, and achieve pipeline protection. At the same time, the elastic space formed by the spring can accommodate a certain amount of axial deformation of the heat supply pipeline, and absorb and convert the energy of the pipeline deformation into internal energy and dissipate it. Therefore, the heat supply pipeline is not easily damaged at the fixed position and has better safety.

[0016] Furthermore, a heat supply pipe insulation layer is also provided on the outer surface of the heat supply pipe at both ends of the protective sleeve.

[0017] Furthermore, the heat supply pipe insulation layer is made of polyurethane material.

[0018] In this way, a polyurethane insulation layer is provided outside the heat supply pipe to form a heat supply pipeline, which has better heat preservation.

[0019] Furthermore, a layer of outer pipe for the heat supply pipe is sleeved outside the heat supply pipe insulation layer to achieve better heat preservation and protection. During implementation, the outer pipe for the heat supply pipe is prepared from materials such as polyethylene, aluminum skin, and galvanized iron sheet.

[0020] Furthermore, a sleeve insulation layer is also provided on the outer periphery and both ends of the protective sleeve to better insulate the interior.

[0021] Furthermore, the sleeve insulation layer is made of aerogel, which has the advantages of convenient construction and good heat preservation effect.

[0022] Furthermore, a layer of outer sleeve pipe for the sleeve is provided outside the sleeve insulation layer to achieve better heat preservation and protection.

[0023] Furthermore, the protective sleeve is made of steel pipe material to endow it with sufficient strength.

[0024] Furthermore, the outer sleeve pipe for the sleeve is prepared from materials such as aluminum skin, galvanized iron sheet or stainless steel plate.

[0025] Furthermore, axial rib plates are fixedly arranged between both sides of the inner support plate and the outer surface of the heat supply pipe.

[0026] In this way, the fixing effect between the inner support plate and the heat supply pipe can be better improved to ensure the transmission of force.

[0027] Furthermore, the load-bearing mechanism includes a guide cylinder and a guide post that are coaxially arranged and sleeved in a slidable manner at one end. The guide cylinder and the guide post are arranged along the axial direction of the heat supply pipe, and the load-bearing spring is sleeved outside the guide cylinder and the guide post. The other ends of the guide cylinder and the guide post away from the mating end are fixed ends and are respectively connected and fixed to the inner support plate and the outer support plate.

[0028] In this way, the guide tube and the guide column can better guide the load-bearing spring, so that it can be more smoothly compressed and deformed along the length of the heating pipe, thereby better absorbing the deformation stress of the pipe.

[0029] Furthermore, a radially outward annular load-bearing plate is fixedly provided at the middle position of the guide cylinder, the load-bearing spring and the end in the same direction as the fixed end of the guide cylinder are abutted and connected to the load-bearing plate, an outer limit sleeve is coaxially provided outside the guide cylinder, one end of the outer limit sleeve in the same direction as the fixed end of the guide column is fixed to the same component as the guide column, and a radially inward annular limit plate is fixedly provided at the other end of the outer limit sleeve, the inner ring of the limit plate and the outer surface of the guide cylinder form a slidable clearance fit and are located in the area between the load-bearing plate and the fixed end of the guide cylinder.

[0030] This is because the deformation of the heating pipe caused by thermal expansion and contraction along the axial direction accumulates to the fixed concrete position, which will cause a certain degree of radial deformation and displacement while generating a large axial deformation and displacement. Therefore, the above structure adds an external limit sleeve and a limit plate structure, which can not only better ensure the coaxiality between the guide cylinder and the guide column to ensure that the bearing direction of the load-bearing spring is stable along the axial direction; it can also use the elastic deformation of the structure to absorb the deformation and displacement of the heating pipe in the radial direction, and better ensure the stability of the node structure.

[0031] Furthermore, the outer diameter of the load-bearing plate is larger than the outer diameter of the load-bearing spring when it is not under pressure, and smaller than the maximum outer diameter of the load-bearing spring when it is under pressure. An inner limit sleeve is coaxially sleeved inside the outer limit sleeve. The fixed end of the inner limit sleeve is fixed on the side of the limit plate, and the other end is a suspended open end and extends to a length position adjacent to the mating end of the guide tube. The inner cavity of the inner limit sleeve and the outer ring of the load-bearing plate form a slidable clearance fit.

[0032] In this way, by further relying on the slidable clearance between the inner limit sleeve and the load-bearing plate, the coaxiality along the axial direction is guaranteed while the axial load is carried out, and the deformation displacement from the radial direction can be better absorbed through the elastic deformation between the inner limit sleeve, the limit plate and the outer limit sleeve. The inner limit sleeve can also better ensure the stability of the deformation of the load-bearing spring along the load-bearing direction, so that the load-bearing spring can freely expand and contract in the initial stage of compression, and then after being compressed to a certain extent, the outer diameter of the load-bearing spring becomes larger after being compressed and gradually abuts against the inner cavity wall of the inner limit sleeve. After being restricted by the inner limit sleeve, the two produce strong friction deformation, so that the damping of the load-bearing spring under pressure has an accelerated enhancement effect, and the axial elastic force is quickly converted into radial extrusion force, and the energy conversion and dissipation are quickly completed.

[0033] Furthermore, the guide cylinder, guide column, inner limit sleeve, load-bearing plate and outer limit sleeve are all made of spring steel.

[0034] In this way, by utilizing the elasticity of the spring steel, the above-mentioned dual effects of ensuring the axial load-bearing stability of the load-bearing spring and simultaneously being able to well absorb the deformation displacement generated by the heat supply pipeline in the radial direction can be better achieved.

[0035] Furthermore, one end of the load-bearing spring is fixedly welded to the load-bearing plate, and the other end is fixedly welded to the component fixed at the fixed end of the guide post.

[0036] In this way, when the load-bearing spring on one side of the outer support plate bears the pressure from the axial direction, the load-bearing spring on the other side bears the tensile force, and the deformation stress from the axial direction can be better borne.

[0037] Furthermore, the load-bearing mechanism further includes two oppositely arranged load plates. The fixed ends of the guide cylinder and the guide post are respectively fixed on the two load plates, and the two load plates are fixed on the corresponding outer support plate and inner support plate.

[0038] In this way, it is convenient to pre-assemble the load-bearing mechanism and then install the load-bearing mechanism as a whole between the outer support plate and the inner support plate, which is convenient for structural construction setting.

[0039] Furthermore, there are multiple load-bearing mechanisms and they are evenly arranged in the circumferential direction.

[0040] In addition, during implementation, multiple above-mentioned heat supply pipeline fixed installation structures can be arranged in series along the axial direction on the heat supply pipeline near the node position to better absorb deformation and ensure the structural stability effect at the node.

[0041] To sum up, the present invention can absorb and convert the thermal deformation of the heat supply pipeline along the axial and radial directions, reduce the pipeline stress, better realize the protection of large-diameter, high-temperature and high-pressure heat supply pipelines and their special nodes, provide a stress-reducing fixing method for the non-compensated laying of overhead heat supply pipelines, and open up a new way for the safety of non-compensated directly buried heat supply pipelines and their pipe fittings nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic structural diagram of the heat supply pipeline fixed installation structure adopted in the implementation of the present invention.

[0043] Figure 2 It is Figure 1 the left sectional view in

[0044] Figure 3 It is Figure 1 the schematic diagram of a single load-bearing mechanism in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] The present invention will be further described in detail below in conjunction with the specific embodiments.

[0046] During specific implementation: A method for fixing a heat supply pipeline capable of absorbing thermal elongation. A fixing foundation is provided at the position to be fixed on the heat supply pipeline, and the heat supply pipeline is fixed on the fixing foundation. It is characterized in that an axial elastic connection is formed between the heat supply pipeline and the fixing foundation by means of a spring arranged along the axial direction of the heat supply pipeline.

[0047] In this way, after the heat supply pipeline is installed and fixed according to this method, the pipeline is elastically connected to the fixing foundation by means of the axial spring. Therefore, the axial push-pull stress generated by the axial deformation accumulated due to the thermal expansion and contraction of the heat supply pipeline can still act on the fixing foundation along the axial direction and be offset, so as to reduce the force at the stress accumulation node position and form a protection. At the same time, since the heat supply pipeline and the fixing foundation are elastically connected, a certain deformation space can be formed by relying on the spring, which can accommodate and absorb the deformation amount accumulated by the heat supply pipeline along the axial direction, achieving the effect of absorbing the thermal elongation of the pipeline; the existence of the spring can also better absorb and convert the energy generated by the pipeline deformation into elastic potential energy and further convert it into internal energy and dissipate it.

[0048] During implementation, as an option, the position to be fixed can be near the node position of the heat supply pipeline, and the fixing foundation is a fixed concrete cast with cement. This can better ensure the safety of the node position. Wherein the node refers to the position of the elbow, diameter change, folding point or tee joint of the heat supply pipeline.

[0049] As another option, the heat supply pipeline is installed in a pipe gallery. A number of positions to be fixed are evenly spaced in the pipe gallery to achieve segmented fixed installation of the heat supply pipeline. The fixing foundation is a partition wall or a partition installation frame fixed inside the pipe gallery along the cross-section. In this way, a stress-reducing fixing method is provided for the non-compensated laying of the overhead heat supply pipeline in the pipe gallery, and the safety of the heat supply pipeline in the pipe gallery is better improved.

[0050] In this embodiment, this method is realized by relying on a fixing and installation structure for the heat supply pipeline. For the fixing and installation structure of the heat supply pipeline, see Figures 1-3 As shown, it includes a fixing foundation 1. A vertical outer support plate 2 is fixed on the fixing foundation 1. A through hole is opened in the middle of the outer support plate 2, and a heat supply pipe 3 is installed through the through hole. Protective sleeves 4 sleeved outside the heat supply pipe are also arranged on both sides of the outer support plate 2. The two ends of the protective sleeve 4 and the heat supply pipe are hermetically arranged by means of end ring plates 12, and an installation chamber is formed between the protective sleeve 4 and the heat supply pipe 3. Annular inner support plates 5 are respectively fixed along the radial direction on the heat supply pipes on both sides of the outer support plate. Load-bearing mechanisms are arranged between each of the two inner support plates 5 and the outer support plate 2. The load-bearing mechanism includes a spiral load-bearing spring 6 arranged along the axial direction and acting between the inner support plate and the outer support plate.

[0051] In this way, when the push-pull stress caused by axial deformation occurs in the heat supply pipeline, it is offset by the spring acting on the fixed foundation to avoid impacting the heat supply pipeline, especially the pipeline structure at the nodes, thus achieving pipeline protection. At the same time, the elastic space formed by the spring can accommodate a certain amount of axial deformation of the heat supply pipeline, and the energy of the pipeline deformation is absorbed and converted into internal energy and dissipated. Therefore, the heat supply pipeline is not easily damaged at the fixed position and has better safety.

[0052] During implementation, when the heat supply pipeline is directly buried, the fixed foundation can be the fixed concrete cast near the pipeline node position, and the outer support plate is cast in the fixed concrete to achieve fixation. When the heat supply pipeline is installed in the pipe gallery, the fixed foundation can be the partition walls or partition installation frames evenly spaced in the pipe gallery.

[0053] Among them, heat supply pipe insulation layers 7 are also provided on the outer surfaces of the heat supply pipes on both outer sides of the protection sleeve 4.

[0054] Among them, the heat supply pipe insulation layer 7 is made of polyurethane material.

[0055] In this way, a polyurethane insulation layer is provided outside the heat supply pipe to form a heat supply pipeline, achieving better heat preservation.

[0056] Among them, a layer of outer pipe 8 of the heat supply pipe is also sleeved outside the heat supply pipe insulation layer 7. To achieve better heat preservation and protection. During implementation, the outer pipe 8 of the heat supply pipe is prepared from materials such as polyethylene, aluminum sheet, and galvanized iron sheet.

[0057] Among them, sleeve insulation layers 9 are also provided on the outer periphery and both outer sides of the protection sleeve 4. It can better insulate the interior.

[0058] Among them, the sleeve insulation layer 9 is made of aerogel. It has the advantages of convenient construction and good heat preservation effect.

[0059] Among them, a layer of outer protection pipe 10 of the sleeve is also provided outside the sleeve insulation layer 9. To achieve better heat preservation and protection.

[0060] Among them, the protection sleeve 4 is made of steel pipe material. To make it have sufficient strength.

[0061] Among them, the outer protection pipe 10 of the sleeve is prepared from aluminum sheet or galvanized iron sheet material.

[0062] Among them, axial rib plates 11 are also fixedly provided between both sides of the inner support plate 5 and the outer surface of the heat supply pipe 3.

[0063] In this way, the fixing effect between the inner support plate and the heat supply pipe can be better improved, ensuring the transmission of force.

[0064] Among them, the load-bearing mechanism includes a guide cylinder 13 and a guide post 14 which are coaxially arranged and sleeved in a slidable manner at one end. The guide cylinder and the guide post are arranged along the axial direction of the heat supply pipe, and the load-bearing spring 6 is sleeved outside the guide cylinder and the guide post. The other ends of the guide cylinder and the guide post away from the mating end are fixed ends and are respectively connected and fixed to the inner support plate and the outer support plate.

[0065] In this way, relying on the guide cylinder and the guide post can better guide the load-bearing spring, so that it can be more smoothly compressed and deformed along the length direction of the heat supply pipe, and achieve a better effect of absorbing the deformation stress of the pipeline.

[0066] Among them, a circular load-bearing plate 15 extending radially outward is fixedly arranged at the middle position of the guide cylinder 13. The end of the load-bearing spring 6 in the same direction as the fixed end of the guide cylinder abuts and is connected to the load-bearing plate 15. An outer limit sleeve 16 is also coaxially sleeved outside the guide cylinder. One end of the outer limit sleeve 16 in the same direction as the fixed end of the guide post 14 is fixed to the same component as the guide post 14. A circular limit plate 17 extending radially inward is fixedly arranged at the other end of the outer limit sleeve 16. A slidable clearance fit is formed between the inner circle of the limit plate 17 and the outer surface of the guide cylinder 13 and is located in the area between the load-bearing plate and the fixed end of the guide cylinder.

[0067] This is because after the deformation generated by the heat expansion and contraction of the heat supply pipeline along the axial direction accumulates to the fixed concrete position, while generating a large axial deformation displacement, it will also cause a certain degree of radial deformation displacement. Therefore, the above structure adds an outer limit sleeve and a limit plate structure. In addition to better ensuring the coaxiality between the guide cylinder and the guide post to ensure that the load-bearing direction of the load-bearing spring is stably along the axial direction; it can also use the elastic deformation of the structure to absorb the deformation displacement of the heat supply pipeline in the radial direction, and better ensure the stability of the joint structure.

[0068] Among them, the outer diameter of the load-bearing plate 15 is larger than the outer diameter of the load-bearing spring 6 when it is not compressed and smaller than the maximum outer diameter of the load-bearing spring 6 when it is compressed. An inner limit sleeve 18 is also coaxially sleeved inside the outer limit sleeve. The fixed end of the inner limit sleeve 18 is fixed to the side surface of the limit plate, and the other end is a suspended open end and extends to the length position adjacent to the mating end of the guide cylinder 13. A slidable clearance fit is formed between the inner cavity of the inner limit sleeve 18 and the outer circle of the load-bearing plate 15.

[0069] In this way, relying on the slidable clearance fit between the inner limit sleeve and the bearing plate, while bearing axial force, the axial coaxiality is ensured, and at the same time, the elastic deformation between the inner limit sleeve, the limit plate and the outer limit sleeve can better absorb the deformation displacement from the radial direction. The inner limit sleeve can also better ensure the stability of the bearing spring deforming along the bearing direction, so that the bearing spring can freely expand and contract at the initial stage of being compressed, and then after being compressed to a certain extent, the outer diameter of the bearing spring becomes larger after being compressed and gradually abuts against the inner wall of the inner limit sleeve cavity. After being restricted by the inner limit sleeve, the two generate strong friction deformation, so that the damping of the bearing spring under compression shows an accelerating enhancement effect, quickly converting the axial elastic force into a radial extrusion force and quickly completing the conversion and dissipation of energy.

[0070] Among them, the guide cylinder 13, the guide post 14, the inner limit sleeve 18, the bearing plate 15 and the outer limit sleeve 16 are all made of spring steel.

[0071] In this way, by using the elasticity of spring steel, the above-mentioned dual effects of ensuring the stability of the bearing spring bearing axial force and at the same time being able to well absorb the deformation displacement generated by the heating pipeline in the radial direction are better achieved.

[0072] Among them, one end of the bearing spring 6 is welded and fixed to the bearing plate 15, and the other end is welded and fixed to the component fixed to the fixed end of the guide post 14.

[0073] In this way, when the bearing spring on one side of the outer support plate bears the axial pressure, the bearing spring on the other side bears the tensile force, and the axial deformation stress can be better borne.

[0074] Among them, the bearing mechanism further includes two relatively arranged load plates 19. The fixed ends of the guide cylinder and the guide post are respectively fixed on the two load plates, and the two load plates are fixed on the corresponding outer support plate and inner support plate.

[0075] In this way, it is convenient to complete the assembly of the bearing mechanism in advance, and then the bearing mechanism is integrally installed between the outer support plate and the inner support plate, which is convenient for structural construction setting.

[0076] Among them, there are multiple bearing mechanisms and they are evenly arranged along the circumferential direction.

[0077] In addition, during implementation, multiple above-mentioned fixed installation structures of the heating pipeline can be arranged in series along the axial direction on the heating pipeline near the node position to better absorb deformation and ensure the structural stability effect at the node.

Claims

1. A method for fixing a heat supply pipeline capable of absorbing thermal elongation, which comprises setting a fixing foundation at a position to be fixed of the heat supply pipeline and fixing the heat supply pipeline on the fixing foundation. The method is characterized in that an axial elastic connection is formed between the heat supply pipeline and the fixing foundation by means of a spring arranged along the axial direction of the heat supply pipeline.

2. The method for fixing a heat supply pipeline capable of absorbing thermal elongation as described in claim 1, wherein, The position to be fixed is near the node position of the heat supply pipeline, and the fixing foundation is a fixed concrete cast with cement.

3. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 1, characterized in that The heat supply pipeline is installed in a pipe gallery, and a plurality of positions to be fixed are evenly spaced in the pipe gallery to realize segmented fixed installation of the heat supply pipeline. The fixing foundation is a partition wall or a partition mounting frame fixed inside the pipe gallery along the cross section.

4. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 1, characterized in that, This method is realized by means of a fixing and installing structure for a heat supply pipeline. The fixing and installing structure for a heat supply pipeline includes a fixing foundation, on which a vertical outer support plate is fixed. A through hole is formed in the middle of the outer support plate, and a heat supply pipe is installed through the through hole. Protective sleeves sleeved outside the heat supply pipe are further arranged on both sides of the outer support plate. Both ends of the protective sleeve and the heat supply pipe are hermetically arranged by means of end ring plates, and an installation chamber is formed between the protective sleeve and the heat supply pipe. On the heat supply pipes on both sides of the outer support plate in the installation chamber, an annular inner support plate is respectively fixed along the radial direction, and a load-bearing mechanism is arranged between each of the two inner support plates and the outer support plate. The load-bearing mechanism includes a spiral load-bearing spring arranged along the axial direction and acting between the inner support plate and the outer support plate.

5. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 4, characterized in that Heat supply pipe insulation layers are further arranged on the outer surfaces of the heat supply pipes outside both ends of the protective sleeve; the heat supply pipe insulation layers are made of polyurethane materials; A layer of outer pipe for the heat supply pipe is further sleeved outside the heat supply pipe insulation layer.

6. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 4, characterized in that, A sleeve insulation layer is further arranged on the outer periphery and outside both ends of the protective sleeve; the sleeve insulation layer is made of aerogel; A layer of outer sleeve for the sleeve is further arranged outside the sleeve insulation layer; the protective sleeve is made of steel pipe material; the outer sleeve for the sleeve is prepared from aluminum skin or galvanized iron sheet material.

7. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 2, characterized in that, Axial rib plates are further fixed between both sides of the inner support plate and the outer surface of the heat supply pipe.

8. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 2, wherein The load-bearing mechanism includes a guide cylinder and a guide post which are coaxially arranged and are slidably sleeved and matched at one end. The guide cylinder and the guide post are arranged along the axial direction of the heat supply pipe, and the load-bearing spring is sleeved outside the guide cylinder and the guide post. The other ends of the guide cylinder and the guide post away from the mating end are fixed ends and are respectively connected and fixed to the inner support plate and the outer support plate.

9. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 8, characterized in that, A circular load-bearing plate extending radially outwards is fixedly arranged at the middle position of the guide cylinder. The end of the load-bearing spring in the same direction as the fixed end of the guide cylinder abuts against and is connected to the load-bearing plate. An outer limiting sleeve is coaxially sleeved outside the guide cylinder. One end of the outer limiting sleeve in the same direction as the fixed end of the guide post is fixed to the same component as the guide post. An annular limiting plate extending radially inwards is fixedly arranged at the other end of the outer limiting sleeve. A slidable clearance fit is formed between the inner circle of the limiting plate and the outer surface of the guide cylinder and is located in the area between the load-bearing plate and the fixed end of the guide cylinder.

10. The method for fixing a heat supply pipeline capable of absorbing thermal elongation according to claim 9, characterized in that, The outer diameter of the load-bearing plate is larger than the outer diameter of the load-bearing spring when it is not compressed and smaller than the maximum outer diameter of the load-bearing spring when it is compressed. An inner limiting sleeve is also coaxially sleeved inside the outer limiting sleeve. The fixed end of the inner limiting sleeve is fixed on the side surface of the limiting plate, and the other end is a suspended open end and extends to the length position adjacent to the mating end of the guiding cylinder. A slidable clearance fit is formed between the inner cavity of the inner limiting sleeve and the outer ring of the load-bearing plate; The guiding cylinder, the guiding column, the inner limiting sleeve, the load-bearing plate and the outer limiting sleeve are all made of spring steel; One end of the load-bearing spring is welded and fixed on the load-bearing plate, and the other end is welded and fixed on the component fixed by the fixed end of the guiding column; The load-bearing mechanism further includes two oppositely arranged load plates. The fixed ends of the guiding cylinder and the guiding column are respectively fixed on the two load plates, and the two load plates are fixed on the corresponding outer support plate and inner support plate; There are multiple load-bearing mechanisms and they are evenly arranged in the circumferential direction.

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