Heat supply pipeline mounting and fixing device

Abstract

The utility model discloses a heat supply pipeline installing and fixing device which comprises a vertical outer supporting plate, a through hole is formed in the middle of the outer supporting plate, a heat supply pipe is installed in the through hole in a penetrating mode, and protective sleeves connected outside the heat supply pipe in a sleeved mode are further arranged on the two sides of the outer supporting plate. The outer supporting plate is fixedly arranged on the heat supply pipe, the two ends of the protective sleeve and the heat supply pipe are arranged in a closed mode through annular plates at the ends, and an installation cavity is formed between the protective sleeve and the heat supply pipe. The heat supply device is characterized in that the portions, located on the two sides of the outer supporting plate, of the installation cavity are each fixedly provided with an annular inner supporting plate in the radial direction; and force bearing mechanisms are arranged between the inner supporting plates on the two sides and the outer supporting plates correspondingly, and each force bearing mechanism comprises a spiral force bearing spring which is arranged in the axial direction and acts between the corresponding inner supporting plate and the corresponding outer supporting plate. According to the utility model, the thrust of the fixed node can be effectively reduced, the deformation of the pipeline at the fixed node can be effectively controlled, the node position of the heat supply pipeline can be better protected, and the node safety is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heat supply pipeline, specifically relates to a fixing method of direct buried pipeline. BACKGROUND

[0002] Heat supply pipeline is a kind of commonly used equipment widely used in long-distance transmission of heat flow medium. Heat supply pipeline is the most commonly used system form in China's central heating. In the working process, heat supply pipeline is affected by thermal expansion and cold shrinkage, and the deformation caused by thermal expansion and cold shrinkage will gradually accumulate and expand along the axial direction of the pipeline, and then form a great destructive effect at the stress accumulation node position (hereinafter referred to as node) of the elbow, reducing, folding point and tee of the pipeline, causing safety hazards and accidents. In order to solve this problem, it is usually necessary to set a fixed section structure near the elbow, reducing, folding point and tee node position of heat supply pipeline.

[0003] The existing heat supply pipeline fixing and mounting structure is to set a fixed concrete on the ground near the stress accumulation node position of the heat supply pipeline, and then directly fix the heat supply pipeline on the fixed concrete, so that the axial pushing and pulling stress caused by the axial deformation of the heat supply pipeline under the effect of thermal expansion and cold shrinkage will directly act on the fixed concrete, thereby protecting the elbow, reducing, folding point or tee at the stress accumulation node position from being damaged.

[0004] However, the existing fixed section structure directly fixes the heat supply pipeline on the fixed concrete, and when the axial pushing and pulling stress of the pipeline accumulates too much, it is easy to cause damage to the heat supply pipeline at the fixed concrete position, causing safety hazards.

[0005] In addition, CN201710285792.5 has disclosed a hot water pipeline pipe gallery non-compensation laying method, which is to set fixed pipe racks in the pipe gallery at intervals and connect the hot water pipeline thereto, to forcibly fix the axial free expansion of the hot water pipeline, to use the pipeline itself to bear the stress, thereby canceling the pipeline compensator and realizing non-compensation treatment of the hot water pipeline at the elbow, tee and reducing. However, in this laying structure, the axial expansion deformation of the hot water pipeline is still directly applied to the fixed pipe rack, and the accumulated axial deformation stress cannot be converted and dissipated, which may still cause safety hazards in the long run.

[0006] Therefore, how to develop a heat supply pipeline installation and fixing technology that can better reduce safety hazards and improve the protection effect and safety performance of the pipeline has become a problem to be considered and solved by those skilled in the art. UTILITY MODEL CONTENTS

[0007] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is how to provide a heat supply pipeline installation and fixing device that can better protect the node position of the heat supply pipeline and improve safety.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A heating pipe installation and fixing device includes a vertical outer support plate with a through hole in the middle, through which a heating pipe is installed. Protective sleeves are also provided on both sides of the outer support plate, fitted onto the heating pipe. The ends of the protective sleeves and the heating pipe are sealed by end ring plates, forming an installation chamber between the protective sleeves and the heating pipe. The installation chamber is characterized by having an annular inner support plate fixed radially on each heating pipe on both sides of the outer support plate. Each inner support plate on both sides has a load-bearing mechanism between itself and the outer support plate. The load-bearing mechanism includes a helical load-bearing spring arranged axially and acting between the inner and outer support plates.

[0010] In this way, when using this device, the outer support plate can be cast and fixed to the fixed concrete near the node of the heating pipe; or fixed to the partition wall or mounting frame in the pipe gallery. When the heating pipe experiences axial deformation and push-pull stress, the stress is offset by the spring acting on the fixed concrete, thus avoiding impact on the pipe structure at the node and achieving node protection. At the same time, the elastic space formed by the spring can accommodate a certain amount of axial deformation of the heating pipe and absorb the energy of the pipe deformation, converting it into internal energy dissipation. Therefore, the heating pipe is not easily damaged even in the fixed installation position, providing better safety. The node mentioned here refers to the location of the heating pipe elbow, diameter change, bend, or tee.

[0011] Furthermore, a heating pipe insulation layer is also provided on the outer surface of the heating pipe at both ends of the protective sleeve.

[0012] Furthermore, the insulation layer of the heating pipe is made of polyurethane material.

[0013] This method of installing a polyurethane insulation layer on the outside of the heating pipes forms a heating pipeline, which provides better insulation.

[0014] Furthermore, an outer heating pipe is installed outside the insulation layer of the heating pipe to achieve better insulation and protection. In practice, the outer heating pipe is made of materials such as polyethylene, aluminum sheet, and galvanized iron sheet.

[0015] Furthermore, the outer periphery and both ends of the protective sleeve are also provided with a sleeve insulation layer, which can better insulate the interior.

[0016] Furthermore, the insulation layer of the sleeve is made of aerogel. It has advantages such as convenient construction and good insulation effect.

[0017] Furthermore, an outer protective sleeve is installed outside the insulation layer of the sleeve to achieve better insulation and protection.

[0018] Furthermore, the protective sleeve is made of steel pipe material to give it sufficient strength.

[0019] Furthermore, the outer protective tube of the sleeve is made of aluminum sheet or galvanized iron sheet.

[0020] Furthermore, axial ribs are fixedly installed between the two sides of the inner support plate and the outer surface of the heating pipe.

[0021] This improves the fixation between the inner support plate and the heating pipe, ensuring the transmission of force.

[0022] Furthermore, the load-bearing mechanism includes a guide cylinder and a guide post that are coaxially arranged and slidably fitted together at one end. The guide cylinder and guide post are arranged along the axial direction of the heating pipe, and the load-bearing spring is sleeved outside the guide cylinder and guide post. The other end of the guide cylinder and guide post away from the mating end is a fixed end and is respectively connected and fixed to the inner support plate and the outer support plate.

[0023] In this way, the guide cylinder and guide column can better guide the load-bearing spring, making it more stable to undergo compressive deformation along the length of the heating pipe, thus producing a better effect of absorbing the deformation stress of the pipe.

[0024] Furthermore, a radially outwardly annular support plate is fixedly installed at the middle position of the guide cylinder. The support spring and the fixed end of the guide cylinder are connected to the support plate at the same direction. An outer limiting sleeve is also coaxially sleeved outside the guide cylinder. The end of the outer limiting sleeve and the fixed end of the guide column are fixed on the same component as the guide column. A radially inwardly annular limiting plate is fixedly installed at the other end of the outer limiting sleeve. The inner ring of the limiting plate and the outer surface of the guide cylinder form a sliding clearance fit and are located in the area between the support plate and the fixed end of the guide cylinder.

[0025] This is because the axial deformation caused by the thermal expansion and contraction of the heating pipe accumulates at the fixed concrete position, resulting in significant axial deformation displacement as well as a certain degree of radial deformation displacement. Therefore, the addition of an outer limiting sleeve and limiting plate structure to the above structure not only better ensures the coaxiality between the guide cylinder and the guide column to ensure the load-bearing spring's load-bearing direction is axially stable, but also utilizes the structure's elastic deformation to absorb the radial deformation displacement of the heating pipe, thus better ensuring the stability of the node structure.

[0026] Furthermore, the outer diameter of the load-bearing plate is larger than the outer diameter of the load-bearing spring when it is not compressed, but 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 of the limiting plate, and the other end is an open end that is suspended and extends to a length position adjacent to the mating end of the guide cylinder. The inner cavity of the inner limiting sleeve and the outer ring of the load-bearing plate form a sliding clearance fit.

[0027] In this way, by further relying on the sliding clearance fit between the inner limiting sleeve and the load-bearing plate, axial coaxiality is ensured while bearing axial force. At the same time, the elastic deformation between the inner limiting sleeve, the limiting plate, and the outer limiting sleeve can better absorb the radial deformation displacement. The inner limiting sleeve can also better ensure the stability of the load-bearing spring's deformation along the load-bearing direction. This allows the load-bearing spring to freely expand and contract in the initial stage of compression. Then, after being compressed to a certain extent, the outer diameter of the load-bearing spring increases and gradually abuts against the inner wall of the inner limiting sleeve. After being restricted by the inner limiting sleeve, the two generate strong frictional deformation, which accelerates the damping of the load-bearing spring under compression. This quickly converts the axial elastic force into radial compressive force, rapidly completing the energy conversion and dissipation.

[0028] Furthermore, the guide cylinder, guide post, inner limiting sleeve, load-bearing plate, and outer limiting sleeve are all made of spring steel.

[0029] This utilizes the elasticity of spring steel to better achieve the dual effect of ensuring the stability of the load-bearing spring along the axial direction while effectively absorbing the deformation displacement generated by the heating pipe in the radial direction.

[0030] Furthermore, one end of the load-bearing spring is welded and fixed to the load-bearing plate, and the other end is welded and fixed to the component fixed to the fixed end of the guide post.

[0031] 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 tension, which can better withstand the deformation stress from the axial direction.

[0032] Furthermore, the load-bearing mechanism also includes two load plates arranged opposite each other. The fixed ends of the guide cylinder and the guide 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.

[0033] This allows for the pre-assembly of the load-bearing mechanism, which can then be installed as a whole between the outer and inner support plates, facilitating structural construction.

[0034] Furthermore, there are multiple load-bearing mechanisms that are evenly arranged circumferentially.

[0035] In addition, during implementation, multiple of the above-mentioned heating pipe fixed joint structures can be arranged in series along the axial direction on the heating pipe near the node location to better absorb deformation and ensure the structural stability at the node.

[0036] In summary, this utility model can absorb and transform the deformation stress of heating pipelines along the axial and radial directions, better protect the node positions of heating pipelines, and greatly improve the safety of the nodes. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure after installation when this utility model is implemented.

[0038] Figure 2 for Figure 1 The left sectional view in the image.

[0039] Figure 3 for Figure 1 A schematic diagram of a single load-bearing mechanism. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to specific embodiments.

[0041] Example: A heating pipe installation and fixing device, see [link / reference] Figures 1-3 As shown, it includes a vertical outer support plate 2 with a through hole in the middle. A heating pipe 3 is installed through the through hole. Protective sleeves 4 are also provided on both sides of the outer support plate 2 and are fitted around the heating pipe. The two ends of the protective sleeves 4 are closed to the heating pipe by the end ring plates 12, forming an installation chamber between the protective sleeves 4 and the heating pipe 3. An annular inner support plate 5 is fixed radially on the heating pipe on both sides of the outer support plate. A load-bearing mechanism is provided between the inner support plate 5 on both sides and the outer support plate 2. The load-bearing mechanism includes a spiral load-bearing spring 6 arranged axially and acting between the inner support plate and the outer support plate.

[0042] In this way, when using this device, it can be used to fix the pipe joints of directly buried heating pipelines. The outer support plate is simply cast and fixed onto the fixed concrete 1 near the pipe joint. The pipeline is elastically connected to the fixed concrete by springs along the axial direction. Therefore, the axial push-pull stress generated by the accumulated axial deformation of the heating pipeline due to thermal expansion and contraction can still be offset by the axial force acting on the fixed concrete, reducing the stress at the joint and providing protection. Simultaneously, the elastic connection between the heating pipeline and the fixed concrete allows for a certain deformation space created by the springs, which can accommodate and absorb the accumulated axial deformation of the heating pipeline. The presence of the springs also better absorbs and converts the energy generated by pipeline deformation into elastic potential energy, which is further converted into internal energy and dissipated. Therefore, the safety of the joint location is better guaranteed.

[0043] Additionally, when the heating pipeline is installed within a pipe rack, this device can also be used to fix it to partition walls or partition mounting frames that are evenly spaced within the pipe rack. This provides a stress-reducing fixing method for uncompensated overhead heating pipelines laid within pipe racks, thus significantly improving the safety of the heating pipelines within the pipe rack.

[0044] Among them, the outer surface of the heating pipe on both ends of the protective sleeve 4 is also provided with a heating pipe insulation layer 7.

[0045] The insulation layer 7 of the heating pipe is made of polyurethane material.

[0046] This method of installing a polyurethane insulation layer on the outside of the heating pipes forms a heating pipeline, which provides better insulation.

[0047] The heating pipe insulation layer 7 is further encased in an outer heating pipe pipe 8 for better insulation and protection. In practice, the outer heating pipe pipe 8 is made of materials such as polyethylene, aluminum sheet, and galvanized iron sheet.

[0048] The protective sleeve 4 is further provided with a sleeve insulation layer 9 on its outer periphery and both outer ends. This provides better internal insulation.

[0049] The sleeve insulation layer 9 is made of aerogel. It has advantages such as convenient construction and good insulation effect.

[0050] The insulation layer 9 is further reinforced with an outer protective sleeve 10 for better insulation and protection.

[0051] The protective sleeve 4 is made of steel pipe to ensure sufficient strength.

[0052] The outer protective tube 10 of the sleeve is made of aluminum sheet or galvanized iron sheet.

[0053] Among them, axial ribs 11 are fixedly installed between the two sides of the inner support plate 5 and the outer surface of the heating pipe 3.

[0054] This improves the fixation between the inner support plate and the heating pipe, ensuring the transmission of force.

[0055] The load-bearing mechanism includes a guide cylinder 13 and a guide column 14 that are coaxially arranged and slidably fitted together at one end. The guide cylinder and guide column are arranged along the axial direction of the heating pipe, and the load-bearing spring 6 is sleeved outside the guide cylinder and guide column. The other end of the guide cylinder and guide column away from the mating end is a fixed end and is respectively connected and fixed to the inner support plate and the outer support plate.

[0056] In this way, the guide cylinder and guide column can better guide the load-bearing spring, making it more stable to undergo compressive deformation along the length of the heating pipe, thus producing a better effect of absorbing the deformation stress of the pipe.

[0057] A radially outwardly annular support plate 15 is fixedly installed at the middle of the guide cylinder 13. The support spring 6 and the fixed end of the guide cylinder are connected to the support plate 15. An outer limiting sleeve 16 is coaxially sleeved outside the guide cylinder. The outer limiting sleeve 16 and the fixed end of the guide post 14 are fixed to the same component. The other end of the outer limiting sleeve 16 is fixedly installed with a radially inwardly annular limiting plate 17. The inner ring of the limiting plate 17 and the outer surface of the guide cylinder 13 form a sliding clearance fit and are located in the area between the support plate and the fixed end of the guide cylinder.

[0058] This is because the axial deformation caused by the thermal expansion and contraction of the heating pipe accumulates at the fixed concrete position, resulting in significant axial deformation displacement as well as a certain degree of radial deformation displacement. Therefore, the addition of an outer limiting sleeve and limiting plate structure to the above structure not only better ensures the coaxiality between the guide cylinder and the guide column to ensure the load-bearing spring's load-bearing direction is axially stable, but also utilizes the structure's elastic deformation to absorb the radial deformation displacement of the heating pipe, thus better ensuring the stability of the node structure.

[0059] 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, but smaller than the maximum outer diameter of the load-bearing spring 6 when it is compressed. An inner limiting sleeve 18 is also coaxially sleeved inside the outer limiting sleeve. The fixed end of the inner limiting sleeve 18 is fixed on the side of the limiting plate, and the other end is an open end that is suspended and extends to a length position adjacent to the mating end of the guide cylinder 13. The inner cavity of the inner limiting sleeve 18 and the outer ring of the load-bearing plate 15 form a sliding clearance fit.

[0060] In this way, relying on the sliding clearance fit between the inner limiting sleeve and the load-bearing plate, axial coaxiality is ensured while bearing axial force. Simultaneously, the elastic deformation between the inner limiting sleeve, the limiting plate, and the outer limiting sleeve better absorbs radial deformation displacement. The inner limiting sleeve also better ensures the stability of the load-bearing spring's deformation along the load-bearing direction. This allows the load-bearing spring to freely expand and contract in the initial stage of compression. Then, after being compressed to a certain extent, the outer diameter of the load-bearing spring increases and gradually abuts against the inner wall of the inner limiting sleeve. Constrained by the inner limiting sleeve, the two generate strong frictional deformation, resulting in an accelerated increase in the damping of the load-bearing spring under compression. This rapidly converts the axial elastic force into radial compressive force, quickly completing the energy conversion and dissipation.

[0061] The guide cylinder 13, guide post 14, inner limiting sleeve 18, load-bearing plate 15 and outer limiting sleeve 16 are all made of spring steel.

[0062] This utilizes the elasticity of spring steel to better achieve the dual effect of ensuring the stability of the load-bearing spring along the axial direction while effectively absorbing the deformation displacement generated by the heating pipe in the radial direction.

[0063] One end of the load-bearing spring 6 is welded and fixed to the load-bearing plate 15, and the other end is welded and fixed to the component fixed to the fixed end of the guide column 14.

[0064] 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 tension, which can better withstand the deformation stress from the axial direction.

[0065] The load-bearing mechanism also includes two load plates 19 arranged opposite to each other. The fixed ends of the guide cylinder and the guide 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.

[0066] This allows for the pre-assembly of the load-bearing mechanism, which can then be installed as a whole between the outer and inner support plates, facilitating structural construction.

[0067] The load-bearing mechanism comprises multiple components and is evenly arranged circumferentially.

[0068] In addition, during implementation, multiple of the above-mentioned heating pipe fixed joint structures can be arranged in series along the axial direction on the heating pipe near the node location to better absorb deformation and ensure the structural stability at the node.

Claims

1. A heating pipe installation and fixing device, comprising a vertical outer support plate, a through hole in the middle of the outer support plate, a heating pipe being installed through the through hole, and protective sleeves fitted onto the heating pipe on both sides of the outer support plate, the protective sleeves being sealed to the heating pipe at both ends by end ring plates, forming an installation chamber between the protective sleeves and the heating pipe, characterized in that, The installation chamber is located on the heating pipes on both sides of the outer support plate, and each of them is fixed radially with an annular inner support plate. Each of the inner support plates on both sides and the outer support plate is provided with a load-bearing mechanism, which includes a spiral load-bearing spring that is arranged axially and acts between the inner support plate and the outer support plate.

2. The heating pipeline installation and fixing device as described in claim 1, characterized in that, The outer surface of the heating pipe at both ends of the protective sleeve is also provided with a heating pipe insulation layer.

3. The heating pipeline installation and fixing device as described in claim 2, characterized in that, The insulation layer of the heating pipe is made of polyurethane material.

4. The heating pipeline installation and fixing device as described in claim 3, characterized in that, An outer heating pipe is also installed outside the insulation layer of the heating pipe.

5. The heating pipeline installation and fixing device as described in claim 1, characterized in that, The outer periphery and both ends of the protective sleeve are also provided with a sleeve insulation layer; the sleeve insulation layer is made of aerogel.

6. The heating pipeline installation and fixing device as described in claim 5, characterized in that, An outer protective sleeve is installed outside the insulation layer of the sleeve; the protective sleeve is made of steel pipe; the outer protective sleeve is made of aluminum sheet, galvanized iron sheet or stainless steel plate.

7. The heating pipeline installation and fixing device as described in claim 1, characterized in that, Axial ribs are also fixedly installed between the two sides of the inner support plate and the outer surface of the heating pipe.

8. The heating pipeline installation and fixing device as described in claim 1, characterized in that, The load-bearing mechanism includes a guide cylinder and a guide post that are coaxially arranged and slidably fitted together at one end. The guide cylinder and guide post are arranged along the axial direction of the heating pipe, and the load-bearing spring is sleeved outside the guide cylinder and guide post. The other end of the guide cylinder and guide post away from the mating end is a fixed end and is respectively connected and fixed to the inner support plate and the outer support plate.

9. The heating pipeline installation and fixing device as described in claim 8, characterized in that, A radially outwardly annular support plate is fixedly installed at the middle of the guide cylinder. The support spring and the fixed end of the guide cylinder are connected to the support plate. An outer limiting sleeve is also coaxially sleeved outside the guide cylinder. The end of the outer limiting sleeve and the fixed end of the guide column are fixed on the same component as the guide column. A radially inwardly annular limiting plate is fixed at the other end of the outer limiting sleeve. The inner ring of the limiting plate and the outer surface of the guide cylinder form a sliding clearance fit and are located in the area between the support plate and the fixed end of the guide cylinder.

10. The heating pipeline installation and fixing device as described in 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, but smaller than the maximum outer diameter of the load-bearing spring when it is compressed. An inner limit sleeve is also 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 an open end that is suspended and extends to a length position adjacent to the mating end of the guide cylinder. The inner cavity of the inner limit sleeve and the outer ring of the load-bearing plate form a sliding clearance fit. The guide cylinder, guide post, inner limiting sleeve, load-bearing plate, and outer limiting sleeve are all made of spring steel. One end of the load-bearing spring is welded and fixed to the load-bearing plate, and the other end is welded and fixed to the component fixed to the fixed end of the guide column; The load-bearing mechanism also includes two load plates arranged opposite each other. The fixed ends of the guide cylinder and the guide 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. The load-bearing mechanism has multiple components and is evenly arranged circumferentially.

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