A long-distance heat pipeline arch pipe rack structure and its installation structure

Abstract

The present invention relates to an arched pipe support structure for a long-distance heat transmission network and its installation structure. The pipe support structure includes an arched pipe support of a rigid truss type. The two arch feet of the arched pipe support are respectively used to be fixed on both sides of the gully, and fixed supports are arranged at intervals with the compensator. The arched pipe support is connected through connecting rods to set up guide supports and sliding supports. The guide supports and sliding supports are used to support the heat supply pipeline. The guide support allows the heat supply pipeline to slide along the axial direction and be radially fixed when the heat supply pipeline expands thermally or vibrates, and the sliding support allows the heat supply pipeline to slide along the axial direction and allows the heat supply pipeline to move horizontally in the radial direction. This structure overcomes the problems existing in the prior art, utilizes the characteristics of the arched structure with strong load-bearing capacity and anti-deformation ability, effectively reduces the fatigue damage of the heat supply pipeline structure, has a large span range and good stability, and has a low construction cost, which is conducive to popularization and use.

Description

Technical Field

[0001] The present invention relates to the technical field of heat supply, and in particular to an arched pipe support structure for a long-distance heat transmission network and its installation structure. Background Art

[0002] At present, China has been able to achieve the construction and operation of 42-km long-distance heat supply pipelines. In the long run, long-distance heat supply pipelines will surely become the mainstream technology in China's heat supply field. However, due to the complex terrain in China, especially there are many large rivers and trenches in the central and western regions, resulting in large pipe spans, which poses quite a challenge to the application of long-distance heat supply. To ensure the development of long-distance heat supply technology, it is urgent to research a stable, reliable and economical large-span pipeline laying scheme.

[0003] The traditional large-span pipeline laying scheme is a suspension structure, that is, a truss structure extending along the span is arranged below the connecting rod of the suspension bridge, and pipelines and maintenance channels are laid on the truss cross beam to form a suspension structure system. Gas pipelines have a small diameter; the medium inside the pipeline is light; and there is no insulation and no expansion outside the pipeline. Therefore, at present, this scheme is mostly used for the transportation of gas pipelines such as natural gas. However, the diameter of long-distance heat supply pipelines is mostly above 800 mm. The self-weight of the pipeline is large under the full-water and insulated state, and the pipeline will have a certain thermal expansion during the working state. At the same time, the pipeline will vibrate under the unstable working state. The suspension structure itself is a flexible structure, and its load-bearing capacity and anti-deformation ability are weak. Therefore, the traditional suspension structure cannot be directly applied to heat supply pipelines.

[0004] There is a long-distance heat transmission network suspension pipe support (CN208871150U) in the prior art. This pipe support structure includes several cross beams arranged in sequence. A main suspension cable is arranged above each end of the cross beam. A cross beam connecting plate is arranged at each end of each cross beam. Each cross beam connecting plate is connected to the main suspension cable above the corresponding end of the cross beam through a connecting rod. The connecting rods at the same end of the cross beam are arranged in sequence on the main suspension cable corresponding to that end. Both ends of the main suspension cable are connected to one side of the top of a vertically arranged cable tower. The other side of the top of the cable tower is connected to an anchor block located on the ground through a backstay cable. A pipe support for placing a steam pipeline is fixed on each cross beam. This technical solution only improves the traditional suspension laying scheme, cancels the truss in the suspension structure, and changes it to directly suspend the heat supply pipeline by the suspension cable. This technology has the following problems:

[0005] 1. The load of the heat supply pipeline is large. To ensure the safe operation of the pipeline, it is necessary to build relatively large cable towers on both banks of the trench, and the construction cost is high;

[0006] 2. The heat supply pipeline will vibrate during operation. If a flexible structure such as a suspension cable is used, it will inevitably cause the suspension cable to shake greatly with the vibration of the pipeline, which will cause certain fatigue damage to both the pipeline structure and the suspension structure.

[0007] 3. During the operation of the heating pipeline, expansion displacement will occur, and compensators need to be set at intervals. If the continuous hanger form is adopted, it is not appropriate to set the fixed points and compensators on the suspension pipe rack. This results in the maximum span of the suspension pipe rack being up to half of the compensation distance, that is, a compensator is set at one end and a fixed point is set at the other end (both the compensator and the fixed point are set on independent brackets adjacent to the suspension pipe rack), and the span of the continuous hanger type suspension pipe rack is limited.

[0008] 4. Due to the unique geographical characteristics of the gully, there will be strong winds in extreme cases, which has an adverse impact on the stability of the continuous hanger suspension structure.

[0009] Therefore, based on years of experience and practice in the relevant industry, the inventor proposes an arched pipe rack structure for long-distance heat transmission network and its installation structure to overcome the defects of the prior art. Summary of the Invention

[0010] The purpose of the present invention is to provide an arched pipe rack structure for long-distance heat transmission network and its installation structure, to overcome the problems existing in the prior art. In this arched pipe rack structure for long-distance heat transmission network, by utilizing the characteristics of the arched structure with strong load-bearing capacity and anti-deformation ability, the fatigue damage of the heating pipeline structure is effectively reduced, the span range is large, the stability is good, and the construction cost is low, which is conducive to popularization and use.

[0011] The purpose of the present invention is achieved as follows. An arched pipe rack structure for long-distance heat transmission network includes a rigid truss type arched pipe rack with the arch top upward and capable of spanning the gully. The two arch feet of the arched pipe rack are respectively used to be fixed on both sides of the gully. The arched pipe rack structure for long-distance heat transmission network includes a compensator, which is used to compensate the thermal expansion displacement of the heating pipeline spanning the gully, and a fixed support spaced from the compensator and used to support the heating pipeline spanning the gully; the arched pipe rack is connected through a vertical connecting rod to set a guiding support and a sliding support, and the guiding support and the sliding support are used to support the heating pipeline spanning the gully. The guiding support allows the heating pipeline to slide along the axial direction and be radially fixed when thermally expanding or vibrating, and the sliding support allows the heating pipeline to slide along the axial direction and allows the heating pipeline to move horizontally along the radial direction when thermally expanding or vibrating.

[0012] In a preferred embodiment of the present invention, the guiding support includes a first support structure, and a semi-circular groove recessed inward from the end is provided on the first support structure. The semi-circular groove is used to abut against the outer wall of the heating pipeline; on both sides of the semi-circular groove in the radial direction of the first support structure, the first ends of a connecting rod are respectively connected, and the second ends of the connecting rod are connected to the arched pipe rack.

[0013] In a preferred embodiment of the present invention, the first bracket structure includes a horizontal first bottom plate, on which a first vertical plate is vertically arranged. The first vertical plates are arranged in pairs and at intervals. The semi-circular grooves are arranged on the first vertical plates from the ends inward. The first bottom plate is respectively connected to the first ends of a connecting rod on the radial two sides of the semi-circular groove, and the second ends of the connecting rods are connected to the arched pipe rack.

[0014] In a preferred embodiment of the present invention, the sliding bracket includes a second bracket structure, on which a semi-elliptical groove recessed from the ends inward is arranged. The bottom of the semi-elliptical groove is used for abutting against the outer wall of the heating pipeline; the second bracket structure is respectively connected to the first ends of a connecting rod on the radial two sides of the semi-elliptical groove, and the second ends of the connecting rods are connected to the arched pipe rack.

[0015] In a preferred embodiment of the present invention, the second bracket structure includes a horizontal second bottom plate, on which a second vertical plate is vertically arranged. The second vertical plates are arranged in pairs and at intervals. The semi-elliptical grooves are arranged on the second vertical plates from the ends inward. The second bottom plate is respectively connected to the first ends of a connecting rod on the radial two sides of the semi-elliptical groove, and the second ends of the connecting rods are connected to the arched pipe rack.

[0016] In a preferred embodiment of the present invention, the top of the arched pipe rack is closed to form an operating platform, and inspection hooks are arranged around the arched pipe rack.

[0017] In a preferred embodiment of the present invention, the arched pipe rack is composed of high-strength steel units, and the outer surface of the arched pipe rack is subjected to rust prevention treatment; the surface of the connecting rod is provided with a hot-dip galvanized unit, and the guiding bracket and the sliding bracket adopt vermiculite thermal insulation hangers.

[0018] The object of the present invention can also be achieved in this way. An installation structure of the long-distance heat network arched pipe rack structure as described above, the arched pipe rack is integrally higher than the gully, and the two arch feet of the arched pipe rack are respectively fixedly connected to the upper edges on both sides of the gully. The heating pipeline crossing the gully passes through the lower part of the arched pipe rack. The arched pipe rack forms a through-type arched structure. Fixed brackets are respectively arranged at intervals with the arch feet at the upper edges on both sides of the gully. The two fixed brackets are symmetrically arranged. The heating pipeline passes through the fixed brackets, and the fixed brackets axially and radially fix the heating pipeline;

[0019] The connecting rod includes a plurality of downwardly extending and paired suspension rods that are spaced along the chord length direction on the arched pipe rack. The suspension rods are located above the heating pipeline, and the bottom ends of a pair of suspension rods on the side close to the gully are connected to one of the guiding brackets. A compensator is arranged between the guiding bracket and the side of the gully on the heating pipeline. The bottom ends of multiple pairs of suspension rods arranged from the guiding bracket to the other side of the gully are respectively connected to one of the sliding brackets, and the heating pipeline passes through the guiding bracket and the sliding bracket.

[0020] The object of the present invention can also be achieved in this way. An installation structure of a long-distance heat transmission network arched pipe rack structure as described above, the crown of the arched pipe rack is higher than the upper edge of the gully, and the two arch feet of the arched pipe rack are lower than the upper edge of the gully. The two arch feet of the arched pipe rack are respectively fixedly connected to the two side surfaces of the gully. The heating pipeline crossing the gully passes through the middle of the arched pipe rack, and the arched pipe rack forms a semi-through type arched structure; when the heating pipeline passes through the arched pipe rack, it intersects with the arched pipe rack to form two intersection points. Fixed brackets are symmetrically arranged at the upper edges on both sides of the gully. Fixed brackets are respectively arranged at the two intersection points on the arched pipe rack. The heating pipeline passes through each of the fixed brackets, and the fixed brackets axially and radially fix the heating pipeline;

[0021] The connecting rod includes a pair of struts that extend upwardly respectively between the two intersection points and the two side surfaces of the gully on the arched pipe rack. The top ends of each pair of struts are respectively connected to one of the guiding brackets; the connecting rod also includes a plurality of downwardly extending and paired suspension rods that are spaced along the chord length direction on the arched pipe rack. The suspension rods are located between the two intersection points, and the bottom ends of a pair of suspension rods on the side close to the gully are connected to one of the guiding brackets. A compensator is arranged between each of the guiding brackets and the adjacent intersection point on the heating pipeline. The bottom ends of multiple pairs of suspension rods arranged from the guiding bracket to the other side of the gully are respectively connected to one of the sliding brackets, and the heating pipeline passes through the guiding bracket and the sliding bracket.

[0022] The object of the present invention can also be achieved in this way. An installation structure of a long-distance heat transmission network arched pipe rack structure as described above, the entire arched pipe rack is arranged lower than the gully. The two arch feet of the arched pipe rack are respectively fixedly connected to the two side surfaces of the gully. The heating pipeline crossing the gully passes above the arched pipe rack, and the arched pipe rack forms a through type arched structure; fixed brackets are symmetrically arranged at the upper edges on both sides of the gully. A fixed bracket is arranged at the crown of the arched pipe rack. The heating pipeline passes through the fixed bracket, and the fixed bracket axially and radially fixes the heating pipeline;

[0023] The connecting rod includes a plurality of upwardly extending and paired struts spaced along the chord length direction on the arched pipe rack. A guiding bracket is respectively connected to two pairs of struts on both sides of the crown of the arched pipe rack. Expansion joints are respectively arranged on the heating pipeline between the crown of the arched pipe rack and each guiding bracket. The two expansion joints are symmetrically arranged with respect to the crown of the arched pipe rack. A sliding bracket is respectively connected to the struts between each guiding bracket and the side of the gully. The heating pipeline passes through the guiding bracket and the sliding bracket.

[0024] As described above, a long-distance heat transmission network arched pipe rack structure and its installation structure provided by the present invention have the following beneficial effects:

[0025] In the long-distance heat transmission network arched pipe rack structure of the present invention, by utilizing the characteristics of the arched structure with strong load-bearing capacity and anti-deformation ability, it has a large span range and good stability; the fixed bracket and the expansion joint are used in combination to ensure the stability of the heating pipeline; the guiding brackets and the sliding brackets support and limit the heating pipeline at intervals, and allow the axial displacement of the heating pipeline caused by thermal expansion or vibration. The sliding bracket allows the radial displacement of the heating pipeline caused by thermal expansion or vibration, thereby constituting a flexible support for the heating pipeline and effectively reducing the fatigue damage of the heating pipeline structure;

[0026] The long-distance heat transmission network arched pipe rack structure of the present invention is divided into lower-supported, middle-supported, and upper-supported installation structures according to the support position of the pipeline. The lower-supported long-distance heat transmission network arched pipe rack structure is suitable for supporting heating pipelines with light loads and short spans; the middle-supported and lower-supported long-distance heat transmission network arched pipe rack structures are suitable for supporting heating pipelines with heavy loads. At the same time, the center line position of the arched pipe rack of the upper-supported long-distance heat transmission network arched pipe rack structure can bear the thrust load, and a fixed bracket can be set. The pipeline expansion joints are symmetrically arranged and are suitable for use with medium-distance spans; the arched pipe rack of the middle-supported long-distance heat transmission network arched pipe rack structure can be provided with two fixed points to ensure the stability of the heating pipeline and is suitable for use with large spans;

[0027] The long-distance heat transmission network arched pipe rack structure of the present invention has low construction costs, a wide range of applications, and is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following drawings are only intended to illustrate and explain the present invention and do not limit the scope of the present invention.

[0029] Wherein:

[0030] Figure 1 : is a schematic diagram of the lower-supported installation structure of the long-distance heat transmission network arched pipe rack structure of the present invention.

[0031] Figure 2 : is a schematic diagram of the middle-supported installation structure of the long-distance heat transmission network arched pipe rack structure of the present invention.

[0032] Figure 3 : Schematic diagram of the upper bearing installation structure of the long-distance heat transmission network arch pipe support structure of the present invention.

[0033] Figure 4 : Schematic diagram of the guiding support of the present invention.

[0034] Figure 5 : Schematic diagram of the sliding support of the present invention.

[0035] Figure 6 : is Figure 1 Cross-sectional schematic diagram at the guiding support in

[0036] Figure 7 : is Figure 1 Cross-sectional schematic diagram at the sliding support in

[0037] In the figure:

[0038] 100. Long-distance heat transmission network arch pipe support structure;

[0039] 1. Arch pipe support;

[0040] 2. Guiding support;

[0041] 21. Semi-circular groove; 221. First bottom plate; 222. First vertical plate;

[0042] 3. Sliding support;

[0043] 31. Semi-oval groove; 321. Second bottom plate; 322. Second vertical plate;

[0044] 41. Suspension rod; 42. Support rod;

[0045] 8. Heat supply pipeline; 81. Compensator; 82. Fixed support;

[0046] 9. Gully. Specific implementation manner

[0047] In order to have a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation manner of the present invention will now be described with reference to the accompanying drawings.

[0048] The specific embodiments of the present invention described herein are only for the purpose of explaining the present invention and should not be construed as limiting the present invention in any way. Under the teachings of the present invention, those skilled in the art can conceive any possible variations based on the present invention, and these should all be regarded as falling within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] As Figures 1 to 7 shown, the present invention provides a long-distance heat transmission network arch pipe support structure 100, including a rigid truss-type arch pipe support 1 with an upward arch crown spanning a gully. The two arch feet of the arch pipe support 1 are respectively used to be fixed on both sides of the gully 9. The long-distance heat transmission network arch pipe support structure 100 includes a compensator 81, which is used to compensate for the thermal expansion displacement of the heat supply pipeline 8 spanning the gully. A fixed support 82 for supporting the heat supply pipeline spanning the gully is arranged at an interval from the compensator 81. A fixed support 82 is arranged between every two compensators 81. The number and positions of the compensators 81 and the fixed supports 82 are determined according to the actual working conditions;

[0051] The arch pipe support 1 is connected through a vertical connecting rod to arrange a guiding support 2 and a sliding support 3. The guiding support 2 and the sliding support 3 are used to support the heat supply pipeline spanning the gully. The guiding support 2 allows the heat supply pipeline to slide along the axial direction and be radially fixed when the heat supply pipeline expands thermally or vibrates. The sliding support 3 allows the heat supply pipeline to slide along the axial direction and allows the heat supply pipeline to move horizontally in the radial direction when the heat supply pipeline expands thermally or vibrates.

[0052] The arched structure of the arched pipe support 1, as a rigid structure, has strong load-bearing capacity and anti-deformation ability, and can be used as a stable and reliable solution for laying large-span heating pipelines. The heating pipeline crossing the gully has obvious expansion during operation. A compensator (prior art) is set at intervals to offset the expansion deformation of the heating pipeline, and a fixed support is set between two compensators to control the displacement of the heating pipeline. The compensator between the fixed supports is installed between the arched structures to ensure the stability of the heating pipeline and reduce the cost of the arched structure. The arched pipe support 1 is connected to the guiding support 2 and the sliding support 3 through vertical connecting rods. The connection between the connecting rod and the rigid arched pipe support 1 is fixedly connected. The other end of the connecting rod is used to support the heating pipeline and is not fixed and limited in six degrees of freedom. Therefore, the other end of the connecting rod has a certain flexibility relative to the arched pipe support 1. Therefore, the connection mode between the heating pipeline 8 and the arched pipe support 1 adopts a combination of rigid connection and flexible connection, effectively alleviating the fatigue damage of the heating pipeline structure caused by the thermal expansion or vibration of the heating pipeline.

[0053] In the arched pipe support structure of the long-distance heat transmission network of the present invention, taking advantage of the characteristics of the arched structure with strong load-bearing capacity and anti-deformation ability, it has a large span range and good stability; the fixed support and the compensator are used in combination to ensure the stability of the heating pipeline; the guiding support and the sliding support support and limit the heating pipeline at intervals, and allow the axial displacement of the heating pipeline caused by thermal expansion or vibration. The sliding support allows the radial displacement of the heating pipeline caused by thermal expansion or vibration, thus constituting a flexible support for the heating pipeline and effectively reducing the fatigue damage of the heating pipeline structure; the construction cost of the arched pipe support structure of the long-distance heat transmission network of the present invention is low, which is conducive to popularization and use.

[0054] Furthermore, as Figure 4 、 Figure 6 shown, the guiding support 2 includes a first support structure. A semi-circular groove 21 recessed inward from the end is provided on the first support structure. The radius dimension of the semi-circular groove 21 is set to be the same as the outer wall radius dimension of the heating pipeline 8. The semi-circular groove 21 is used to abut against the outer wall of the heating pipeline 8. The heating pipeline 8 is radially clamped in the semi-circular groove 21, and the semi-circular groove 21 can radially limit the heating pipeline 8; the first support structure is respectively connected to the first ends of a connecting rod on both radial sides of the semi-circular groove 21, and the second ends of the connecting rods are connected to the arched pipe support 1. The two connecting rods and the guiding support 2 together form a swing-type support structure or a leg-type support structure to support the heating pipeline and reduce the fatigue damage caused by vibration during the operation of the heating pipeline. The connection state between the connecting rod and the guiding support 2 is taken as Figure 6 as an example for illustration, Figure 6When showing the lower bearing support of the arched pipe rack 1, the connecting rod is a hanging rod structure, and the cross-sectional schematic diagram at the guiding support 2. Other states are similar, and the difference lies in whether the connecting rod is a hanging rod from top to bottom or a strut from bottom to top.

[0055] In this embodiment, as Figure 4 shown, the first support structure includes a horizontal first bottom plate 221, a first vertical plate 222 is vertically arranged on the first bottom plate 221, the first vertical plates 222 are arranged in pairs and at intervals, a semi-circular groove 21 is arranged inward from the end on the first vertical plate 222, the first bottom plate 221 is respectively connected to the first end of a connecting rod on both radial sides of the semi-circular groove 21, and the second end of each connecting rod is connected to the arched pipe rack 1.

[0056] Furthermore, as Figure 5 、 Figure 7 shown, the sliding support 3 includes a second support structure, a semi-elliptical groove 31 recessed inward from the end is arranged on the second support structure, the major axis dimension of the semi-elliptical groove 31 is larger than the outer wall diameter dimension of the heating pipeline 8, and the bottom of the semi-elliptical groove 31 is used to abut against the outer wall of the heating pipeline 8; the major axis dimension of the semi-elliptical groove 31 is larger than the outer wall diameter dimension of the heating pipeline 8, so the heating pipeline 8 can perform radial displacement caused by vibration or thermal expansion in the semi-elliptical groove 31; the second support structure is respectively connected to the first end of a connecting rod on both radial sides of the semi-elliptical groove 31, and the second end of the connecting rod is connected to the arched pipe rack 1. The two connecting rods and the sliding support 3 together form a swing-type support structure or a leg-type support structure to support the heating pipeline and reduce the fatigue damage caused by vibration during the operation of the heating pipeline. The connection state between the connecting rod and the sliding support 3 takes Figure 7 as an example for illustration, Figure 7 when showing the lower bearing support of the arched pipe rack 1, the connecting rod is a hanging rod structure, and the cross-sectional schematic diagram at the sliding support 3. Other states are similar, and the difference lies in whether the connecting rod is a hanging rod from top to bottom or a strut from bottom to top.

[0057] In this embodiment, as Figure 5 shown, the second support structure includes a horizontal second bottom plate 321, a second vertical plate 322 is vertically arranged on the second bottom plate 321, the second vertical plates 322 are arranged in pairs and at intervals, a semi-elliptical groove 31 is arranged inward from the end on the second vertical plate 322, the second bottom plate 321 is respectively connected to the first end of a connecting rod on both radial sides of the semi-elliptical groove 31, and the second end of each connecting rod is connected to the arched pipe rack 1.

[0058] Furthermore, the top of the arched pipe rack 1 is closed to form an operation platform (which can be a platform or a step), and railings and maintenance hooks are arranged around the arched pipe rack 1 to ensure that maintenance personnel can reach the surface of the pipeline for maintenance.

[0059] Furthermore, the arched pipe support 1 is composed of high-strength steel units (such as Q345B), and the outer surface of the arched pipe support 1 is rust-proof treated; the surface of the connecting rod is hot-dip galvanized, and the guide support 2 and the sliding support 3 adopt vermiculite thermal insulation hangers.

[0060] There are three forms of the installation structure of the long-distance heat network arched pipe support structure of the present invention. The three forms are divided according to the support form: the upper-supported type, the middle-supported type, and the lower-supported type, which are as follows:

[0061] Lower-supported installation structure: As Figure 1 shown, the arched pipe support 1 is set higher than the gully 9 as a whole. The two arch feet of the arched pipe support 1 are respectively fixedly connected to the upper edges on both sides of the gully 9. The heat supply pipeline 8 crossing the gully passes through the lower part of the arched pipe support 1. The arched pipe support 1 forms a lower-supported arched structure. Fixed supports 82 are respectively arranged at intervals with the arch feet at the upper edges on both sides of the gully (the ground foundation of the fixed support is separately arranged from the ground foundation of the arched pipe support, and the two are independent of each other in terms of force and there is no interaction). The two fixed supports 82 are symmetrically arranged. The heat supply pipeline 8 passes through the fixed supports 82, and the fixed supports 82 axially and radially fix the heat supply pipeline 8;

[0062] The connecting rod includes a plurality of downwardly extending and paired suspension rods 41 suspended at intervals along the chord length direction on the arched pipe support 1. The suspension rods 41 are located above the heat supply pipeline 8. The bottom ends of a pair of suspension rods 41 on the side close to the gully are connected to a guide support 2. A compensator 81 is arranged between the guide support 2 and the side of the gully on the heat supply pipeline 8. The bottom ends of multiple pairs of suspension rods arranged from the guide support 2 to the other side of the gully are respectively connected to a sliding support 3. The heat supply pipeline 8 passes through the guide support 2 and the sliding support 3.

[0063] The lower-supported arched structure is suitable for the single-pipe arrangement form. Only one compensator is provided for the heat supply pipeline within the support range of the arched pipe support. Fixed supports are arranged at intervals with the arch feet at the upper edges on both sides of the gully. The guide support and the sliding support are both connected to the arched pipe support in a suspended manner. The arched pipe support does not bear the axial thrust of the fixed point of the heat supply pipeline.

[0064] The arched pipe support 1 is made of high-strength steel (such as Q345B), and after rust removal on the outer surface, rust-proof treatment is done well. The surface of the suspension rod 41 needs to be hot-dip galvanized, and the guide support 2 and the sliding support 3 need to adopt vermiculite thermal insulation supports. The foundation of the arched pipe support 1 needs to adopt C30 commercial concrete and HRB400 grade steel bars.

[0065] Middle-supported installation structure: As Figure 2As shown in the figure, the crown of the arched pipe support 1 is higher than the upper edge of the gully 9, and the two arch feet of the arched pipe support 1 are lower than the upper edge of the gully 9. The two arch feet of the arched pipe support 1 are respectively fixedly connected to the two side surfaces of the gully 9 (in this embodiment, the arched pipe support 1 forms a planar intersection with the two side surfaces of the gully 9, and the two arch feet of the arched pipe support 1 are respectively fixedly connected to the middle positions of the two side surfaces of the gully 9). The heating pipeline 8 crossing the gully 9 passes through the middle of the arched pipe support 1, and the arched pipe support 1 constitutes a semi-through type arched structure;

[0066] When the heating pipeline 8 passes through the arched pipe support 1, it intersects with the arched pipe support to form two intersection points. Fixed supports 82 are symmetrically arranged at the upper edges on both sides of the gully (the ground foundation of the fixed support is separately arranged from the ground foundation of the arched pipe support). Fixed supports 82 are respectively arranged at the two intersection points on the arched pipe support 1. The heating pipeline passes through each fixed support 82, and the fixed support 82 axially and radially fixes the heating pipeline 8; The connecting rod includes a pair of struts 42 (which can also be called legs) respectively extending upward between the two intersection points on the arched pipe support 1 and the two side surfaces of the gully (that is, the part where the heating pipeline is higher than the arched pipe support). The tops of each pair of struts 42 are respectively connected to a guiding support 2. In this embodiment, the bottom ends of the struts 42 are welded to the arched pipe support 1;

[0067] The connecting rod also includes a plurality of suspension rods 41 that are suspended at intervals along the chord length direction on the arched pipe support 1 and extend downward and are arranged in pairs. The suspension rods 41 are located between the two intersection points (that is, the part where the heating pipeline is lower than the arched pipe support). The bottom ends of a pair of suspension rods 41 on the side close to the gully are connected to a guiding support 2. A compensator 81 is arranged between each guiding support 2 and the adjacent intersection point on the heating pipeline 8 (there are a total of 3 compensators 81, as Figure 2 shown, one compensator 81 is respectively arranged on the outer sides of the two intersection points, and a third compensator 81 is also arranged near the left intersection point). The bottom ends of multiple pairs of suspension rods arranged from the guiding support 2 to the other side of the gully are respectively connected to a sliding support 3. The heating pipeline 8 passes through the guiding support 2 and the sliding support 3. The aforementioned fixed supports 82, guiding supports 2, and sliding supports 3 support the heating pipeline 8. To ensure uniform stress, the fixed supports 82, guiding supports 2, and sliding supports 3 need to be symmetrically distributed along the chord length direction of the arched pipe support 1.

[0068] The semi-through type arched structure is applicable to the three-pass layout form. Fixed supports are arranged at the positions where the heating pipeline intersects with the arched pipe support, and fixed supports are arranged at the upper edges on both sides of the gully. Three compensators can be arranged for the pipeline within the support range of the heating pipe support. The arched pipe support bears the axial thrust at the fixed points (i.e., the fixed supports at the intersection points) of the heating pipeline, and the directions of the thrusts are opposite and the magnitudes are basically equal.

[0069] The arch pipe support 1 and the struts 42 are made of high-strength steel (such as Q345B). After rust removal on the outer surface, anti-rust treatment shall be carried out. The surface of the hanging rod 41 shall be hot-dip galvanized. The guide support 2 and the sliding support 3 shall adopt vermiculite insulation supports. The foundation of the arch pipe support 1 shall adopt C30 commercial concrete and HRB400 grade steel bars.

[0070] The upper-supported installation structure: As Figure 3 shown, the whole arch pipe support 1 is set lower than the gully. The two arch feet of the arch pipe support 1 are respectively fixedly connected to the two side surfaces of the gully 9 (in this embodiment, the arch feet are erected at the bottom position of the gully to be crossed). The heating pipeline crossing the gully 9 passes above the arch pipe support 1, and the arch pipe support forms an upper-supported arch structure; Fixed supports 82 are symmetrically arranged at the upper edge positions on both sides of the gully (the ground foundation of the fixed support is separately arranged from the ground foundation of the arch pipe support). A fixed support 82 is arranged at the crown of the arch pipe support 1. The heating pipeline 8 passes through the fixed support 82, and the fixed support 82 axially and radially fixes the heating pipeline;

[0071] The connecting rod includes a plurality of struts 42 that are arranged at intervals along the chord length direction on the upper edge of the arch pipe support 1 and extend upward and are arranged in pairs. A guide support 2 is respectively connected to two pairs of struts 42 on both sides of the crown of the arch pipe support 1. Expansion joints 81 are respectively arranged on the heating pipeline 8 between the crown of the arch pipe support 1 and each guide support 2. The two expansion joints 81 are symmetrically arranged with respect to the crown of the arch pipe support 1. Due to the symmetry of the arch structure, the fixed point is set at the exact center (crown) of the arch, and the two expansion joints 81 on both sides are symmetrically arranged, which can ensure the optimal force of the heating pipeline and the steel structure arch pipe support 1. A sliding support 3 is respectively connected to the struts 42 between each guide support 2 and the side surface of the gully. The heating pipeline 8 passes through the guide support 2 and the sliding support 3. The aforementioned fixed supports 82, guide supports 2, and sliding supports 3 support the heating pipeline 8. To meet the uniform force, the fixed supports 82, guide supports 2, and sliding supports 3 shall be symmetrically distributed along the chord length direction of the arch pipe support 1.

[0072] The upper-supported arch structure is applicable to the double-pipe arrangement form. A fixed support is set at the highest point (crown) of the arch pipe support, and two expansion joints are symmetrically arranged for the pipelines within the support range of the arch pipe support. The arch pipe support bears the axial thrust of the fixed point of the pipeline, and the directions of the thrusts are opposite and the magnitudes are basically equal.

[0073] The arch pipe support 1 and the struts 42 are made of high-strength steel (such as Q345B). After rust removal on the outer surface, anti-rust treatment shall be carried out. The guide support 2 and the sliding support 3 shall adopt vermiculite insulation supports. The foundation of the arch pipe support 1 shall adopt C30 commercial concrete and HRB400 grade steel bars.

[0074] The installation structure of the long-distance heat transmission network arch pipe support structure 100 of the present invention is divided into a lower-supported type, a middle-supported type, and an upper-supported type according to the support position of the pipeline. The lower-supported long-distance heat transmission network arch pipe support structure 100 is suitable for supporting heat supply pipelines with light loads and short spans; the middle-supported and lower-supported long-distance heat transmission network arch pipe support structures 100 are suitable for supporting heat supply pipelines with heavy loads. At the same time, the center line position of the arch pipe of the upper-supported long-distance heat transmission network arch pipe support structure 100 can bear thrust loads, and fixed supports can be set. The pipeline compensators are symmetrically arranged and are suitable for use in medium-distance spans; the arch pipe of the middle-supported long-distance heat transmission network arch pipe support structure 100 can be provided with two fixed points (fixed supports) to ensure the stability of the heat supply pipeline and is suitable for use in large spans.

[0075] As described above, a long-distance heat transmission network arch pipe support structure and its installation structure provided by the present invention have the following beneficial effects:

[0076] In the long-distance heat transmission network arch pipe support structure of the present invention, by utilizing the characteristics of the arch structure with strong load-bearing capacity and anti-deformation ability, the span range is large and the stability is good; the fixed support and the compensator are used in combination to ensure the stability of the heat supply pipeline; the guide support and the sliding support are spaced to support and limit the heat supply pipeline, and the heat supply pipeline is allowed to have axial displacement due to thermal expansion or vibration. The sliding support allows the heat supply pipeline to have radial displacement due to thermal expansion or vibration, thereby constituting a flexible support for the heat supply pipeline and effectively reducing the fatigue damage of the heat supply pipeline structure;

[0077] The installation structure of the long-distance heat transmission network arch pipe support structure of the present invention is divided into a lower-supported type, a middle-supported type, and an upper-supported type according to the support position of the pipeline. The lower-supported long-distance heat transmission network arch pipe support structure is suitable for supporting heat supply pipelines with light loads and short spans; the middle-supported and lower-supported long-distance heat transmission network arch pipe support structures are suitable for supporting heat supply pipelines with heavy loads. At the same time, the center line position of the arch pipe of the upper-supported long-distance heat transmission network arch pipe support structure can bear thrust loads, and fixed supports can be set. The pipeline compensators are symmetrically arranged and are suitable for use in medium-distance spans; the arch pipe of the middle-supported long-distance heat transmission network arch pipe support structure can be provided with two fixed points to ensure the stability of the heat supply pipeline and is suitable for use in large spans;

[0078] The construction cost of the long-distance heat transmission network arch pipe support structure of the present invention is low, the applicable range is wide, and it is conducive to popularization and use.

[0079] The above are only the schematic specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A long-distance heat transmission network arched pipe support structure, characterized in that, it includes a rigid truss-type arched pipe support with an upward arch crown that can span a gully. The two arch feet of the arched pipe support are respectively used to be fixed on both sides of the gully. The long-distance heat transmission network arched pipe support structure includes a compensator, and the compensator is used to compensate for the thermal expansion displacement of the heat supply pipeline spanning the gully. A fixed support for supporting the heat supply pipeline spanning the gully is arranged at an interval from the compensator; the arched pipe support is connected with a guiding support and a sliding support through a vertical connecting rod. The guiding support and the sliding support are used to support the heat supply pipeline spanning the gully. The guiding support allows the heat supply pipeline to slide along the axial direction and be radially fixed when the heat supply pipeline expands thermally or vibrates. The sliding support allows the heat supply pipeline to slide along the axial direction and allows the heat supply pipeline to move horizontally in the radial direction; the guiding support includes a first support structure, and a semi-circular groove recessed inward from the end is arranged on the first support structure. The semi-circular groove is used to abut against the outer wall of the heat supply pipeline; on the radial two sides of the first support structure located at the semi-circular groove, the first ends of a connecting rod are respectively connected, and the second ends of the connecting rod are connected with the arched pipe support; the first support structure includes a horizontal first bottom plate, and a first vertical plate is vertically arranged on the first bottom plate. The first vertical plates are arranged in pairs and at intervals. The semi-circular groove is arranged inward from the end on the first vertical plate. On the radial two sides of the first bottom plate located at the semi-circular groove, the first ends of a connecting rod are respectively connected, and the second ends of each connecting rod are connected with the arched pipe support; the sliding support includes a second support structure, and a semi-oval groove recessed inward from the end is arranged on the second support structure. The bottom of the semi-oval groove is used to abut against the outer wall of the heat supply pipeline; on the radial two sides of the second support structure located at the semi-oval groove, the first ends of a connecting rod are respectively connected, and the second ends of the connecting rod are connected with the arched pipe support.

2. The long-distance heat transmission network arched pipe support structure according to claim 1, characterized in that, the second support structure includes a horizontal second bottom plate, and a second vertical plate is vertically arranged on the second bottom plate. The second vertical plates are arranged in pairs and at intervals. The semi-oval groove is arranged inward from the end on the second vertical plate. On the radial two sides of the second bottom plate located at the semi-oval groove, the first ends of a connecting rod are respectively connected, and the second ends of each connecting rod are connected with the arched pipe support.

3. The long-distance heat transmission network arched pipe support structure according to claim 1, characterized in that, the top of the arched pipe support is closed to form an operating platform, and maintenance hooks are arranged around the arched pipe support.

4. The long-distance heat transmission network arched pipe support structure according to claim 1, characterized in that, the arched pipe support is composed of high-strength steel units, and the outer surface of the arched pipe support is subjected to rust prevention treatment; the surface of the connecting rod is a hot-dip galvanized unit, and the guiding support and the sliding support adopt vermiculite thermal insulation hanging brackets.

5. An installation structure of the long-distance heat transmission network arched pipe support structure according to any one of claims 1 to 4, characterized in that, The overall arch-shaped pipe support is set higher than the gully. The two arch feet of the arch-shaped pipe support are respectively fixedly connected to the upper edges on both sides of the gully. The heat supply pipeline crossing the gully penetrates through the lower part of the arch-shaped pipe support. The arch-shaped pipe support forms a through-type arch structure. Fixed supports are respectively arranged at intervals with the arch feet at the upper edges on both sides of the gully. The two fixed supports are symmetrically arranged. The heat supply pipeline passes through the fixed supports, and the fixed supports axially and radially fix the heat supply pipeline; The connecting rod includes a plurality of downwardly extending and paired suspension rods that are suspended at intervals along the chord length direction on the upper edge of the arch-shaped pipe support. The suspension rods are located above the heat supply pipeline. The bottom ends of a pair of suspension rods on the side close to the gully are connected to one of the guiding supports. A compensator is arranged between the guiding support and the side of the gully on the heat supply pipeline. The bottom ends of multiple pairs of suspension rods arranged from the guiding support to the other side of the gully are respectively connected to one of the sliding supports. The heat supply pipeline passes through the guiding support and the sliding support.

6. An installation structure of the long-distance heat transmission network arch-shaped pipe support structure according to any one of claims 1 to 4, characterized in that, The crown of the arch-shaped pipe support is higher than the upper edge of the gully and the two arch feet of the arch-shaped pipe support are lower than the upper edge of the gully. The two arch feet of the arch-shaped pipe support are respectively fixedly connected to the two side surfaces of the gully. The heat supply pipeline crossing the gully penetrates through the middle of the arch-shaped pipe support. The arch-shaped pipe support forms a half-through arch structure; when the heat supply pipeline passes through the arch-shaped pipe support, it intersects with the arch-shaped pipe support to form two intersection points. Fixed supports are symmetrically arranged at the upper edges on both sides of the gully. Fixed supports are respectively arranged at the two intersection points on the arch-shaped pipe support. The heat supply pipeline passes through each of the fixed supports, and the fixed supports axially and radially fix the heat supply pipeline; The connecting rod includes a pair of struts that are respectively upwardly extending between the two intersection points and the two side surfaces of the gully on the arch-shaped pipe support. The top parts of each pair of struts are respectively connected to one of the guiding supports; the connecting rod further includes a plurality of downwardly extending and paired suspension rods that are suspended at intervals along the chord length direction on the arch-shaped pipe support. The suspension rods are located between the two intersection points. The bottom ends of a pair of suspension rods on the side close to the gully are connected to one of the guiding supports. A compensator is arranged between each of the guiding supports and the adjacent intersection point on the heat supply pipeline. The bottom ends of multiple pairs of suspension rods arranged from the guiding support to the other side of the gully are respectively connected to one of the sliding supports. The heat supply pipeline passes through the guiding support and the sliding support.

7. An installation structure of the long-distance heat transmission network arch-shaped pipe support structure according to any one of claims 1 to 4, characterized in that, The overall arch-shaped pipe support is set lower than the gully. The two arch feet of the arch-shaped pipe support are respectively fixedly connected to the two side surfaces of the gully. The heat supply pipeline crossing the gully passes above the arch-shaped pipe support. The arch-shaped pipe support forms a deck arch structure; fixed supports are symmetrically arranged at the upper edges on both sides of the gully. A fixed support is arranged at the crown of the arch-shaped pipe support. The heat supply pipeline passes through the fixed supports, and the fixed supports axially and radially fix the heat supply pipeline; The connecting rod includes a plurality of upwardly extending and paired struts that are arranged at intervals along the chord length direction on the arched pipe rack. A guiding bracket is respectively connected to two pairs of struts located on both sides of the crown of the arched pipe rack. Expansion joints are respectively arranged on the heat supply pipeline between the crown of the arched pipe rack and each guiding bracket. The two expansion joints are symmetrically arranged with respect to the crown of the arched pipe rack. A sliding bracket is respectively connected to the struts between each guiding bracket and the side of the gully. The heat supply pipeline passes through the guiding bracket and the sliding bracket.

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