Architectural engineering heat distribution pipeline mounting structure with axial thermal expansion and contraction compensation

Abstract

The utility model discloses a constructional engineering heat distribution pipeline mounting structure with an axial thermal expansion compensation function, and solves the problems that the construction period of a heat distribution pipeline and pedestal mounting structure is long, and the thermal expansion and cold contraction adaptability between a pipeline and a pedestal is poor. The mounting structure comprises a concrete cast-in-place forming foundation, a prefabricated pedestal, a polyfluortetraethylene plate, an elastic restraint strap and a heat distribution pipeline, wherein the prefabricated pedestal is arranged on the concrete cast-in-place forming foundation and is in grouting connection with the concrete cast-in-place forming foundation; the prefabricated pedestal is of a cross-shaped structure, and an arc-shaped through groove consistent with the trend of the heat distribution pipeline is formed in a pedestal body. A polyfluortetraethylene plate is fixedly mounted in the arc-shaped channel; the heat distribution pipeline is arranged on the polyfluortetraethylene plate, an elastic restraint strap is arranged above the heat distribution pipeline, and the two ends of the elastic restraint strap are fixed to the prefabricated pedestal. And the sliding friction between the polytetrafluoroethylene material and the heat distribution pipeline shell or between the polytetrafluoroethylene material and the stainless steel plate avoids the damage to the heat distribution pipeline.

Description

Technical Field

[0001] This utility model relates to the field of construction technology for thermal pipeline engineering. Background Technology

[0002] In long-distance heat pipeline transportation projects, the heat pipelines need to be supported based on the design requirements for corrosion and moisture protection. Currently, pedestals are used for this support. As the name suggests, a pedestal is a rigid support structure cast in place using reinforced concrete. By designing an arc-shaped channel on the upper surface of the pedestal, the heat pipeline is placed in this position, and a sliding fit is formed between the two, thereby achieving support for the heat pipeline.

[0003] Because the aforementioned heating pipes and concrete form a rigid structure, and the concrete surface has a relatively high roughness, the concrete can damage the surface of the heating pipes. To solve this problem, the current engineering solution is to embed an arc-shaped stainless steel plate within the arc-shaped channel, allowing for a sliding fit between the stainless steel plate and the heating pipe. Even so, in actual engineering projects, there are still instances where the heating pipes are scratched by the stainless steel plate.

[0004] Meanwhile, existing technologies require on-site pouring of concrete platforms, which is a wet construction method and necessitates modification to a prefabricated construction process. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a building engineering heating pipe installation structure with axial thermal expansion and contraction compensation, which solves the problems of long construction cycle and poor thermal expansion and contraction adaptability between the heating pipe and the pedestal installation structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A building engineering heating pipe installation structure with axial thermal expansion compensation includes a cast-in-place concrete foundation, a precast pedestal, a polytetrafluoroethylene (PTFE) plate, an elastic restraint band, and a heating pipe. The precast pedestal is characterized in that it is placed on the cast-in-place concrete foundation and connected by grouting; the precast pedestal is a cross-shaped structure composed of a pedestal body arranged along the length of the heating pipe and flanges located on both sides of the pedestal body, and has an arc-shaped through groove on the pedestal body consistent with the direction of the heating pipe; the PTFE plate is fixedly installed within the arc-shaped channel; the heating pipe is placed on the PTFE plate, and an elastic restraint band is provided above the heating pipe, with both ends of the elastic restraint band fixed to the precast pedestal.

[0008] The arc-shaped through groove has a pre-embedded part with bolt holes, and a polytetrafluoroethylene plate is fixedly installed by high-strength bolts.

[0009] The polytetrafluoroethylene plate is an arc-shaped plate with a circular arc structure.

[0010] The precast platform is equipped with lifting steel bar rings.

[0011] A grouting sleeve is provided at the lower connection point of the precast platform, and an insert steel bar is provided on the cast-in-place concrete foundation. The grouting sleeve is connected to the insert steel bar by grouting.

[0012] The polytetrafluoroethylene (PTFE) sheet is composed of multiple small pieces of PTFE sheet.

[0013] It also includes a stainless steel plate, which is an arc-shaped plate with loops for attaching ropes. The stainless steel plate is bound and secured to the installation location of the heat pipe by stainless steel strips or wires and rests on the polytetrafluoroethylene plate.

[0014] The elastic restraint band is a rubber restraint band, and the elastic restraint band as a whole is a clamp structure. Fixed ends are provided at both ends of the elastic restraint band, and the fixed ends have steel pads.

[0015] The beneficial effects of this utility model are:

[0016] This structure avoids damage to the heating pipes by converting the high-roughness friction between the heating pipes and the concrete base into sliding friction between the PTFE material and the outer shell of the heating pipes, or between the PTFE material and the stainless steel plate. Combined with the design of elastic constraint bands, it provides circumferential constraint while meeting the elastic constraint requirements within a certain space, and also has an axial thermal expansion compensation effect.

[0017] The pedestal in this structure is precast reinforced concrete, allowing for assembly construction on-site, which significantly improves installation efficiency. Attached Figure Description

[0018] Figure 1 This is a rendering of the implementation effect of the heating pipeline installation structure.

[0019] Figure 2 for Figure 1 Mid-section view, perpendicular to the direction of the heat pipe.

[0020] Figure 3 This is a three-dimensional view of the prefabricated platform.

[0021] Figure 4 This is a three-dimensional view of the concrete foundation.

[0022] Figure 5 It is an assembly for the pedestal.

[0023] In the picture:

[0024] 00 Foundation, 01 Inserted Reinforcing Steel

[0025] 100 base, 110 grouting sleeve, 120 flange, 130 arc-shaped through groove.

[0026] 200 PTFE curved plate, 210 constraint groove.

[0027] 300 elastic restraint belt, 310 steel pad,

[0028] 400 heating pipes. Detailed Implementation

[0029] In this embodiment, a pedestal is produced based on the combination of polytetrafluoroethylene material and prefabricated components. This pedestal supports and installs the heat pipe 400, and also has an axial thermal expansion compensation effect after installation. It is a heat pipe installation structure with better overall performance. The following is a detailed description with reference to specific embodiments.

[0030] The pedestal 100 is made of precast reinforced concrete. The main body of the pedestal is fixed on the foundation 00 at the installation point. A grouting sleeve 110 is provided at the lower connection point of the pedestal, and the bottom surface of the precast pedestal is roughened. Correspondingly, insert steel bars 01 are provided on the foundation. During construction, the grouting sleeve 110 is connected to the insert steel bars 01 and grouting is used for assembly construction, which greatly improves the installation efficiency and shortens the construction time by about two-thirds compared with traditional cast-in-place concrete construction. Moreover, no formwork is required on site.

[0031] The pedestal 100 has a cross-shaped profile and includes a pedestal body arranged along the length of the pipe and flanges 120 located on both sides.

[0032] The main body of the pedestal has an arc-shaped through groove 130 with a pre-embedded part containing bolt holes. A polytetrafluoroethylene (PTFE) arc-shaped plate 200 is fixedly installed using high-strength bolts. After installation, the PTFE arc-shaped plate forms a constraint groove 210 for installing a heat pipe. This process involves pre-assembly at the factory and overall hoisting on site. To facilitate hoisting, hoisting steel reinforcement rings (not shown in the figure) are provided on the pedestal.

[0033] Polytetrafluoroethylene (PTFE), also known as Tefluron, has excellent self-lubricating properties, allowing for a sliding fit with thermal pipelines. PTFE is non-corrosive, resistant to aging, and can be used normally in water and dusty environments, meeting the requirements of dark and humid environments such as underground pipe racks or trenches.

[0034] The polytetrafluoroethylene arc plate 200 is arc-shaped, and the arc plate is arranged along the circumference of the heat pipe.

[0035] Furthermore, it can be Figure 5The PTFE curved plate is designed as a single piece divided into multiple smaller pieces, with millimeter-level gaps between adjacent PTFE plates. Since the coefficient of thermal expansion of PTFE is more than ten times that of carbon steel, under certain environmental temperature differences, the internal stress of the PTFE will be released, causing the PTFE plate to twist, deform, and tear. In this embodiment, by designing the PTFE plate as a small block array structure, the gaps between them can release the internal stress caused by thermal contraction and expansion, ensuring the stability of the system.

[0036] Furthermore, it also includes a stainless steel plate (not shown in the figure), which is an arc-shaped plate with loops for attaching ropes. The stainless steel plate is bound and secured to the installation location of the heating pipe by stainless steel strips or wires, and rests on the aforementioned polytetrafluoroethylene arc-shaped plate. When the heating pipe slides axially, the stainless steel plate will slide relative to the polytetrafluoroethylene slider. This sliding avoids direct contact between the heating pipe and the concrete base, thereby preventing damage to the heating pipe.

[0037] Furthermore, it also includes an elastic restraint band 300, which is a clamp structure with fixed ends at both ends. Each fixed end is partially reinforced with a steel pad 310 to increase local rigidity. Bolt holes are provided at each fixed end. Correspondingly, embedded parts with threaded holes are provided on the flange 120 of the platform, and the two ends of the elastic restraint band are fixed to the platform by bolts 310.

[0038] Furthermore, the elastic restraint band is preferably an elastic band made of rubber.

[0039] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A building engineering heating pipe installation structure with axial thermal expansion compensation, comprising a cast-in-place concrete foundation, a precast platform, a polytetrafluoroethylene (PTFE) plate, an elastic restraint band, and heating pipes, characterized in that, The precast platform is placed on a cast-in-place concrete foundation and connected by grouting. The prefabricated platform is a cross-shaped structure consisting of a platform body arranged along the length of the heat pipe and flanges located on both sides of the platform body. The platform body has an arc-shaped through groove that runs in the same direction as the heat pipe. A polytetrafluoroethylene (PTFE) plate is fixedly installed in the arc-shaped channel. The heat pipe is placed on the PTFE plate and an elastic constraint band is set above the heat pipe. The two ends of the elastic constraint band are fixed to the prefabricated platform.

2. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 1, characterized in that, The arc-shaped through groove has an embedded part with bolt holes, and a polytetrafluoroethylene plate is fixedly installed by high-strength bolts.

3. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 2, characterized in that, The polytetrafluoroethylene plate is an arc-shaped plate with a circular arc structure.

4. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 3, characterized in that, The polytetrafluoroethylene (PTFE) sheet is composed of multiple small pieces of PTFE sheet.

5. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 1, characterized in that, The precast platform is equipped with lifting steel bar rings.

6. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 1, characterized in that, A grouting sleeve is provided at the lower connection point of the precast platform, and an insert steel bar is provided on the cast-in-place concrete foundation. The grouting sleeve is connected to the insert steel bar by grouting.

7. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 1, characterized in that, It also includes a stainless steel plate, which is an arc-shaped plate with loops for attaching ropes. The stainless steel plate is bound and secured to the installation location of the heat pipe by stainless steel strips or wires and rests on the polytetrafluoroethylene plate.

8. The building engineering heating pipeline installation structure with axial thermal expansion compensation according to claim 1, characterized in that, The elastic restraint band is a rubber restraint band, and the elastic restraint band as a whole is a clamp structure. Fixed ends are provided at both ends of the elastic restraint band, and the fixed ends have steel pads.

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