Pipeline encapsulation structure suitable for cold and hot pipelines

Abstract

The utility model provides a pipeline encapsulation structure suitable for cold and hot pipelines, which belongs to the technical field of pipelines and comprises a concrete tank, weathered sand, a cold and hot energy pipeline, a temperature sensing probe and a concrete cover plate. The concrete groove is in a U shape and filled with the weathered sand, the cold and hot energy pipeline is laid in the weathered sand, the temperature sensing probe is laid in the middle of the cold and hot energy pipeline, the concrete cover plate is placed on the upper portion of the concrete groove, and the concrete groove is detachably connected with the concrete cover plate. The cold and hot energy source pipeline and the temperature sensing probe are fixedly connected through a fixing clamp, the fixing clamp is embedded in the weathered sand, the risk of leakage caused by deformation caused by thermal stress of a traditional pipeline is solved, the temperature sensing probe is additionally arranged to detect pipeline leakage, and a movable cover plate is reserved in the packaging structure to facilitate later maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipelines, and in particular relates to a pipeline encapsulation structure suitable for cold and hot pipelines. Background Art

[0002] In modern energy transmission and distribution systems, heating and cooling pipelines play a crucial role. With the acceleration of urbanization and the widespread construction of various industrial facilities, the demand for heating and cooling energy continues to grow, correspondingly leading to the increasing scale and widespread distribution of heating and cooling pipelines. As carriers of energy transmission, heating and cooling pipelines operate in a complex and diverse environment. They must traverse diverse geographical areas, including urban roads, building perimeters, green belts, and various natural terrains. Beneath urban roads, pipelines face constant vibration and pressure from traffic, while also having to withstand external interference from water infiltration and road construction. Near buildings, they may be affected by factors such as foundation settlement and residential activities. Furthermore, in natural environments, such as those crossing rivers and wetlands, heating and cooling pipelines face numerous challenges, including erosion, fluctuating water levels, and varying soil moisture and corrosiveness.

[0003] Traditional pipe encapsulation structures for hot and cold pipelines have numerous drawbacks when dealing with these complex working conditions. Cast-in-place concrete encapsulation is a common method. This method requires mixing and pouring concrete at the pipeline installation site, as well as extensive curing. On-site construction is significantly constrained by weather conditions. For example, in extreme heat, cold, rain, or strong winds, concrete pouring quality is difficult to guarantee, and curing cycles are also prolonged. This not only makes precise construction progress difficult to control but also easily leads to delays, increasing project time costs. Traditional encapsulation structures also have significant shortcomings in managing the thermal stresses of hot and cold pipelines. When hot and cold energy are transmitted through pipelines, they expand and contract due to temperature fluctuations. Traditional rigid encapsulation structures, such as monolithic cast concrete shells, are not well adapted to these thermal stresses. Due to a lack of sufficient deformation space, the thermal expansion of the pipeline is squeezed by the encapsulation structure, resulting in stress concentrations that can easily lead to leaks at welds or weak points in the pipe wall. When the pipeline shrinks due to cold, it may not shrink normally due to the limitations of the encapsulation structure, which will also cause damage to the pipeline, affecting its service life and the safety of energy transmission. Utility Model Content

[0004] In view of this, the utility model provides a pipe encapsulation structure suitable for hot and cold pipelines, which solves the risk of leakage caused by deformation due to thermal stress in traditional pipelines.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a pipe encapsulation structure suitable for hot and cold pipelines, which includes a concrete trough, weathered sand, hot and cold energy pipelines, a temperature probe and a concrete cover plate; the concrete trough is U-shaped and filled with the weathered sand, a plurality of hot and cold energy pipelines are laid in the weathered sand, the temperature probe is laid at the middle bottom position of adjacent hot and cold energy pipelines, the temperature probe is close to one side of the concrete trough, and the concrete cover plate is placed on the upper part of the concrete trough.

[0007] The temperature probe used is AF28-optic3000 optical fiber temperature sensor.

[0008] On the basis of the above technical solution, the utility model can also make the following improvements to the pipe encapsulation structure suitable for hot and cold pipelines:

[0009] Wherein, the concrete trough and the concrete cover plate are detachably connected.

[0010] Specifically, L-shaped slots are arranged at intervals along the length direction on the top of the two side walls of the precast U-shaped concrete trough, with the openings of the slots facing outward. Blocks that match the slots are arranged at corresponding positions on both sides of the precast concrete cover plate.

[0011] Furthermore, the hot and cold energy pipelines are fixedly connected to the temperature sensing probe via a fixing clamp, and the fixing clamp is buried in the weathered sand.

[0012] The fixing clip is designed as a two-halves structure that can be opened and closed, with screw holes set on one side for fastening with screws.

[0013] Furthermore, a drainage hole is provided at the bottom of the concrete trough, and the drainage hole passes through the bottom wall of the concrete trough.

[0014] Furthermore, the concrete cover plate is specifically a rectangular structure, and the upper surface of the concrete cover plate is provided with anti-slip lines, and the anti-slip lines are integrally formed with the concrete cover plate.

[0015] For example, the upper surface of the mold is provided with crisscrossing strip-shaped protrusions or grid-shaped protrusions.

[0016] Furthermore, the inner wall of the concrete tank is provided with an anti-corrosion coating.

[0017] The benefits of adopting this improved solution include: Epoxy resin can be used as the anti-corrosion coating material. Epoxy resin has excellent adhesion, chemical resistance, and mechanical properties. It effectively prevents soil moisture, acids, bases, and other corrosive media from corroding the concrete tank's inner wall, extending its service life and ensuring the stability and safety of the hot and cold pipe encapsulation structure.

[0018] Furthermore, there are multiple temperature sensing probes, and the multiple temperature sensing probes are equidistantly distributed along the length direction of the cold and hot energy pipelines.

[0019] Furthermore, inward protrusions are provided on the tops of both side walls of the concrete trough, and grooves are correspondingly provided on both sides of the concrete cover plate, and the protrusions are matched with the grooves to achieve positioning fit.

[0020] Furthermore, the outside of the hot and cold energy pipelines is wrapped with a heat insulation layer, and the heat insulation layer is located in the weathered sand.

[0021] The benefits of adopting this improved solution include: Insulation material: Glass fiber insulation wool can be used. Glass fiber insulation wool has low thermal conductivity, excellent thermal insulation properties, high temperature resistance, and good chemical stability. It effectively reduces heat exchange between hot and cold energy pipelines and the surrounding environment, improving energy transmission efficiency and reducing energy loss. It also provides a certain degree of protection for the pipelines, reducing the impact of external temperature fluctuations on the pipelines and preventing damage caused by thermal expansion and contraction.

[0022] Furthermore, a sealing strip is provided on the edge of the concrete cover plate, and the sealing strip adopts a rectangular ring structure whose shape matches the concrete cover plate.

[0023] The cross-section of the sealing strip can be circular, square, or irregular. For example, a circular cross-section allows for uniform deformation when squeezed between the cover plate and the U-shaped groove, providing a better seal. A irregular cross-section, such as one with ridges or grooves, can create multiple sealing lines when in contact with the edge of the U-shaped groove, further improving sealing performance.

[0024] Compared with the prior art, the utility model provides a pipe encapsulation structure suitable for hot and cold pipelines with the following beneficial effects:

[0025] The utility model adopts a structural form of prefabricated U-shaped concrete troughs and prefabricated concrete cover plates. These prefabricated components can be mass-produced and processed in factories with a stable production environment and high production efficiency. At the construction site, it is only necessary to simply assemble the prefabricated components, such as placing the hot and cold energy pipelines in the prefabricated U-shaped concrete troughs, filling them with weathered sand, and then covering them with prefabricated concrete cover plates. Compared with the traditional on-site casting construction method, it greatly reduces the on-site construction process and time, and significantly shortens the construction period. For example, in a large industrial park hot and cold pipeline laying project, the adoption of the utility model enables the park to be put into use more quickly, thereby improving the overall efficiency of the project.

[0026] The weathered sand filling the trough provides a good buffer space for hot and cold energy pipelines. When the pipeline generates thermal stress deformation due to temperature changes, the weathered sand can deform accordingly with the expansion or contraction of the pipeline, without placing excessive rigid constraints on the pipeline. For example, when the hot water pipeline is transporting hot water, the pipeline expands due to heat, and the weathered sand can be squeezed into the surrounding space, providing space for the pipeline to expand; when the pipeline cools and contracts, the weathered sand can fill the gaps caused by the contraction, thereby effectively avoiding the hidden dangers of leakage at the pipeline welds caused by thermal stress, extending the service life of the pipeline, and improving the safety and reliability of energy transmission.

[0027] Temperature sensors installed in the trenches monitor temperature changes in both hot and cold energy pipelines in real time. When a pipeline leaks, the temperature around the leak point fluctuates abnormally. The temperature sensors quickly detect this change and transmit a signal to an alarm system. For example, if refrigerant leaks in a refrigeration pipeline, the temperature at the leak point drops rapidly. Upon detecting this temperature drop, the temperature sensors immediately trigger an alarm signal, alerting personnel to address the issue promptly. This effectively prevents continued energy waste and reduces potential environmental pollution. It also allows for timely repair of leaks, ensuring the normal operation of the energy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 This is an example diagram of a pipe encapsulation structure suitable for hot and cold pipelines;

[0030] Figure 2 A diagram showing the connection between a concrete trough and a concrete cover plate suitable for a cold and hot pipeline encapsulation structure;

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 10. Concrete trough; 11. Drain hole; 20. Weathered sand; 30. Hot and cold energy pipelines; 40. Temperature sensor; 50. Concrete cover. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0034] like Figure 1 、 Figure 2 As shown, it is a first embodiment of a pipe encapsulation structure suitable for hot and cold pipelines provided by the present invention. In this embodiment, it includes a concrete tank 10, weathered sand 20, hot and cold energy pipelines 30, a temperature probe 40 and a concrete cover plate 50; the concrete tank 10 is U-shaped and filled with weathered sand 20. Multiple hot and cold energy pipelines 30 are laid in the weathered sand 20. The temperature probe 40 is laid at the middle bottom position of adjacent hot and cold energy pipelines 30, the temperature probe 40 is close to one side of the concrete tank 10, and the concrete cover plate 50 is placed on the upper part of the concrete tank 10.

[0035] Weathered sand is a sandy material formed through natural weathering. In this utility model, it is filled into a prefabricated U-shaped concrete trough, surrounding hot and cold energy pipelines. Its looseness and deformability provide a buffer for pipelines that experience thermal stress deformation due to temperature fluctuations, preventing damage from excessive restraint. Its granular structure also helps distribute heat evenly to a certain extent. Hot and cold energy pipelines are piping systems used to transport cold or hot energy media (such as cold water, hot water, refrigerants, etc.).

[0036] Among them, in the above technical solution, the concrete trough 10 and the concrete cover plate 50 are detachably connected.

[0037] During installation, align the block with the slot and insert it. The block slides down the slot until the cover rests on the upper portion of the U-shaped groove, completing the connection. To disassemble, lift the cover upward to release the block from the slot. This connection method facilitates installation and subsequent maintenance of hot and cold pipes without damaging the concrete structure.

[0038] Furthermore, in the above technical solution, the hot and cold energy pipelines 30 are fixedly connected to the temperature probe 40 via a fixing clamp, and the fixing clamp is buried in the weathered sand 20 .

[0039] After placing the temperature probe at the appropriate position on the hot and cold energy pipelines, use a fixing clamp to clamp the two. Then, when placing the weathered sand, bury the fixing clamp together with the pipeline and probe so that the fixing clamp is stably fixed in the weathered sand, ensuring that the relative position of the temperature probe and the hot and cold energy pipelines is fixed and can accurately sense the temperature changes of the pipelines.

[0040] Furthermore, in the above technical solution, a drainage hole 11 is provided at the bottom of the concrete trough 10 , and the drainage hole 11 passes through the bottom wall of the concrete trough 10 .

[0041] Furthermore, in the above technical solution, the concrete cover plate 50 is specifically a rectangular structure, and the upper surface of the concrete cover plate 50 is provided with anti-slip grooves, and the anti-slip grooves are integrally formed with the concrete cover plate 50.

[0042] Furthermore, in the above technical solution, the inner wall of the concrete tank 10 is provided with an anti-corrosion coating.

[0043] Furthermore, in the above technical solution, there are multiple temperature sensing probes 40 , and the multiple temperature sensing probes 40 are equidistantly distributed along the length direction of the cold and hot energy pipelines 30 .

[0044] Furthermore, in the above technical solution, inward protrusions are provided on the tops of both side walls of the concrete trough 10, and grooves are provided on both sides of the concrete cover plate 50, and the protrusions and the grooves are matched to achieve positioning fit.

[0045] Specifically, the concrete trough is provided with a protrusion structure at the top of its two side walls facing inward (that is, toward the direction of the concrete cover plate to be placed on it), and the concrete cover plate is provided with a groove structure at the two side positions corresponding to the protrusions of the concrete trough. When the concrete cover plate is placed on the top of the concrete trough, these protrusions and grooves can match and fit with each other, thereby playing a positioning role.

[0046] Furthermore, in the above technical solution, the outside of the hot and cold energy pipelines 30 is wrapped with a heat insulation layer, and the heat insulation layer is located inside the weathered sand 20 .

[0047] Furthermore, in the above technical solution, a sealing strip is provided on the edge of the concrete cover plate 50 , and the sealing strip adopts a rectangular ring structure whose shape matches the concrete cover plate 50 .

[0048] One side of the sealing strip is tightly connected to the edge of the precast concrete cover plate, while the other side is designed to match the edge of the precast U-shaped concrete trough. For example, if the U-shaped trough edge is flat, the corresponding side of the sealing strip is flat and slightly protrudes outward, allowing full contact with the U-shaped trough edge when the cover plate is closed and deforming under pressure to form a seal. If the U-shaped trough edge has a certain curvature or a raised structure, the sealing strip is designed with a corresponding concave surface or a shape that can fit the raised structure, thus achieving a tight seal and effectively preventing impurities such as dust and moisture from entering the U-shaped trough, protecting the hot and cold energy pipelines and related components.

[0049] Specifically, the principle of this utility model is as follows: The technical principle of this utility model is based on the synergy of multiple aspects. First, the combined structure of the prefabricated U-shaped concrete trough and prefabricated concrete cover plate provides basic physical protection and installation space for hot and cold energy pipelines. The use of prefabricated components simplifies the construction process, improves construction efficiency and reduces costs;

[0050] In terms of thermal stress treatment, the deformability and loose structural characteristics of weathered sand are utilized. When hot and cold energy pipelines expand and contract due to temperature changes, weathered sand can absorb and release the deformation energy of the pipeline. From the perspective of material mechanics, weathered sand is squeezed when the pipeline expands, and its particles shift and rearrange relative to each other, dispersing the expansion force of the pipeline to the surrounding space; when the pipeline contracts, the weathered sand fills the gaps caused by the contraction under the influence of its own gravity and the surrounding environment, thereby always maintaining flexible support for the pipeline and avoiding stress concentration caused by rigid constraints;

[0051] For leakage monitoring, temperature probes work based on the principle of heat conduction. Under normal circumstances, the temperature of the medium in the cold and hot energy pipelines is relatively stable, and the surrounding temperature field is also in a state of equilibrium. When a leak occurs in the pipeline, the leakage of the medium at the leak point will cause a sharp change in the local temperature. This temperature change will be transmitted to the temperature probe through heat conduction. The thermal element (such as a thermocouple or thermistor) inside the temperature probe will generate a corresponding electrical signal change due to the temperature change. This signal is amplified and converted by the signal processing circuit and transmitted to the alarm device, thereby realizing timely monitoring and alarm of the leak;

[0052] The removable connection between the precast concrete cover and the precast U-shaped concrete trough is based on mechanical structural design principles. By rationally designing the shape, size, and coordination of the connection parts, such as slots and blocks, mortise and tenon joints, or bolted connections, the stability and sealing of the connection are ensured while enabling convenient and quick disassembly to meet the needs of later maintenance. This structural design not only ensures the functional integrity of the entire device but also takes into account the ease of installation, use, and maintenance, making the entire cold and hot pipeline encapsulation device highly practical and reliable in the energy transmission field.

Claims

1. A pipe encapsulation structure suitable for hot and cold pipelines, characterized in that: The invention comprises a concrete trough (10), weathered sand (20), a hot and cold energy pipeline (30), a temperature probe (40) and a concrete cover plate (50); the concrete trough (10) is U-shaped and filled with the weathered sand (20); a plurality of hot and cold energy pipelines (30) are laid in the weathered sand (20); the temperature probe (40) is laid at the middle bottom position of adjacent hot and cold energy pipelines (30); the temperature probe (40) is close to one side of the concrete trough (10); and the concrete cover plate (50) is placed on the upper part of the concrete trough (10).

2. The encapsulation structure for hot and cold pipelines according to claim 1, characterized in that: The concrete trough (10) and the concrete cover plate (50) are detachably connected.

3. The encapsulation structure for hot and cold pipelines according to claim 2, characterized in that: The hot and cold energy pipeline (30) and the temperature sensing probe (40) are fixedly connected via a fixing clamp, and the fixing clamp is buried in the weathered sand (20).

4. The encapsulation structure for hot and cold pipelines according to claim 3, characterized in that: A drainage hole (11) is provided at the bottom of the concrete trough (10), and the drainage hole (11) penetrates the bottom wall surface of the concrete trough (10).

5. The encapsulation structure for hot and cold pipelines according to claim 4, characterized in that: The concrete cover plate (50) is specifically a rectangular structure, and an anti-slip pattern is provided on the upper surface of the concrete cover plate (50), and the anti-slip pattern is integrally formed with the concrete cover plate (50).

6. The encapsulation structure for hot and cold pipelines according to claim 5, characterized in that: The inner wall of the concrete tank (10) is provided with an anti-corrosion coating.

7. The encapsulation structure for hot and cold pipelines according to claim 6, characterized in that: There are a plurality of temperature sensing probes (40), and the plurality of temperature sensing probes (40) are distributed at equal intervals along the length direction of the cold and hot energy pipeline (30).

8. The encapsulation structure for hot and cold pipelines according to claim 7, characterized in that: Inward protrusions are provided on the tops of both side walls of the concrete trough (10), and grooves are correspondingly provided on both sides of the concrete cover plate (50), and the protrusions are matched with the grooves to achieve positioning fit.

9. The encapsulation structure for hot and cold pipelines according to claim 8, characterized in that: The outside of the hot and cold energy pipeline (30) is wrapped with a heat insulation layer, and the heat insulation layer is located in the weathered sand (20).

10. The encapsulation structure for hot and cold pipelines according to claim 9, characterized in that: The edge of the concrete cover plate (50) is provided with a sealing strip, and the sealing strip adopts a rectangular ring structure whose shape matches the concrete cover plate (50).

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