A drainage and antifreeze device for high-altitude tunnels

Abstract

This utility model relates to the field of water pipe antifreeze technology, and in particular to an antifreeze device for drainage in high-altitude tunnels. It includes an antifreeze component fitted onto the outside of the drainage pipe body. The antifreeze component includes several independently installed insulated pipe fittings, which are connected by a connecting component. A heating cylinder is fitted onto the outside of the drainage pipe body. Each insulated pipe fitting includes an outer pipe and an inner pipe body embedded inside the outer pipe, with an insulation layer filling the space between the outer and inner pipe bodies. The inner pipe body has several abutment parts. The modular insulated pipe fitting structure allows for multi-layer insulation without deep burial. The split design allows construction to proceed regardless of geological conditions, making it particularly suitable for complex high-altitude terrain, reducing construction difficulty and cost. A temperature sensor is embedded in the connecting component to monitor the surface temperature of the drainage pipe body in real time. The heating grid inside the heating cylinder is activated only when the temperature is below a threshold, avoiding continuous heating and reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of water pipe antifreeze technology, specifically a high-altitude tunnel drainage antifreeze device. Background Technology

[0002] With the rapid development of transportation infrastructure, tunnel engineering is widely used in complex terrains such as mountains and plateaus. In high-altitude areas, due to low temperatures and frequent freeze-thaw cycles, the drainage system inside the tunnel is highly susceptible to frost damage, leading to problems such as poor drainage and ice expansion. In severe cases, this can even affect the structural safety and functionality of the tunnel.

[0003] Traditional tunnel drainage and antifreeze measures mainly include heating and insulation, and deep burial of drainage pipes. Although deep burial of drainage pipes can avoid the frozen soil layer, the construction is complicated and costly, and it has strict requirements on geological conditions. Existing heating and insulation structures are simple, and long-term operation consumes a lot of energy and costs a lot.

[0004] Therefore, a high-altitude tunnel drainage and antifreeze device is needed to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-altitude tunnel drainage and antifreeze device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-altitude tunnel drainage antifreeze device includes an antifreeze component fitted on the outside of a drainage pipe body. The antifreeze component includes several independently installed insulated pipe fittings, which are connected to each other by a connecting component. A heating cylinder is fitted on the outside of the drainage pipe body. Each insulated pipe fitting includes an outer pipe and an inner pipe body embedded inside the outer pipe, with an insulation filling layer between the outer pipe and the inner pipe body. The inner pipe body has several abutting parts that abut against the outside of the drainage pipe body, forming a hollow layer between the inner pipe body and the drainage pipe body.

[0008] As a preferred embodiment of this utility model, the connecting component includes a connecting ring, and both sides of the connecting ring are fixedly connected with sleeve rings that are inserted into the end of the outer tube. The two sides of the connecting ring are also provided with a plurality of snap-fit ​​ends that are engaged with the abutment portion.

[0009] As a preferred embodiment of this utility model, the snap-fit ​​end includes a set of spaced-apart limiting protrusions, and two of the limiting protrusions are fitted together on both sides of the abutment portion.

[0010] As a preferred embodiment of this utility model, a temperature sensor is embedded inside one of the limiting protrusions, and an inner hole is provided inside the connecting ring for a wire to pass through. The temperature sensor is connected to an external controller via the wire.

[0011] As a preferred embodiment of this utility model, the abutting part adopts an inner protrusion in the shape of a frustum, and a slot for the wire to pass through is opened in the middle of the inner protrusion.

[0012] As a preferred embodiment of this utility model, a connecting seat is fixedly connected to the outer side of the connecting ring, a guide end is fixedly connected to the upper end of the connecting seat, and a plurality of wire holes are opened in the middle of the guide end.

[0013] As a preferred embodiment of this utility model, the heating cylinder is provided with a heating layer inside, and a heating grid is provided inside the heating layer. The heating layer is closely attached to the drain pipe body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model adopts a modular insulation pipe structure, which can achieve multi-layer insulation without deep burial. The split design makes construction unrestricted by geological conditions, and is especially suitable for complex terrain at high altitudes, reducing construction difficulty and cost.

[0016] 2. This utility model embeds a temperature sensor in the connecting component to monitor the surface temperature of the drain pipe in real time. The heating grid inside the heating cylinder is activated only when the temperature is below the threshold, thus avoiding continuous heating and reducing energy consumption.

[0017] 3. The heat insulation filling layer between the outer tube and the inner tube body of this utility model, combined with the hollow layer, forms a double heat insulation barrier, which reduces heat loss and allows the heating system to maintain the tube body temperature by operating intermittently. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the connecting component in this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0022] In the diagram: outer pipe 1, connecting component 2, sleeve ring 21, guide end 22, connecting ring 23, wire hole 24, connecting seat 25, limiting protrusion 26, temperature sensor 27, drain pipe body 3, inner protrusion 4, slot 5, thermal insulation filling layer 6, hollow layer 7, heating cylinder 8. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] For an example, please refer to... Figure 1 , 2 3 and 4, a high-altitude tunnel drainage antifreeze device, including an antifreeze component sleeved on the outside of the drainage pipe body 3, the antifreeze component including several independently set heat-insulating pipes, adjacent heat-insulating pipes being connected by a connecting component 2, a heating cylinder 8 sleeved on the outside of the drainage pipe body 3, a heating layer inside the heating cylinder 8, a heating grid inside the heating layer, the heating layer being tightly attached to the drainage pipe body 3; the heat-insulating pipe includes an outer pipe 1 and an inner pipe embedded inside the outer pipe 1, and a heat-insulating filling layer 6 is filled between the outer pipe 1 and the inner pipe, a number of abutting parts are provided inside the inner pipe, the abutting parts abutting against the outside of the drainage pipe body 3, so that a hollow layer 7 is formed between the inner pipe and the drainage pipe 3.

[0029] The outer tube 1 is made of high-density polyethylene (HDPE), which is resistant to low temperature of -40℃ and ultraviolet aging. The corrugated surface structure enhances the compressive strength (adapting to high-altitude frozen soil extrusion). The insulation filling layer 6 is made of aerogel composite material with a thermal conductivity of ≤0.02W / (m·K), which improves the insulation performance by 40% compared with traditional polyurethane, and is hydrophobic to prevent water absorption failure.

[0030] The insulation filling layer 6 between the outer tube 1 and the inner tube body, combined with the hollow layer 7, forms a double thermal insulation barrier, reducing heat loss and allowing the heating system to maintain the tube body temperature by operating intermittently.

[0031] Please refer to Figure 1 , 2 3 and 4, the connecting component 2 includes a connecting ring 23, both sides of which are fixedly connected to a sleeve ring 21 that mates with the end of the outer tube 1. Both sides of the connecting ring 23 are also provided with several snap-fit ​​ends that mate with the abutment part. The snap-fit ​​end includes a set of spaced limiting protrusions 26. Two limiting protrusions 26 are fitted together on both sides of the abutment part. A temperature sensor 27 is embedded inside one of the limiting protrusions 26. The connecting ring 23 has an inner hole for wires to pass through. The temperature sensor 27 is connected to an external controller through the wire. A connecting seat 25 is fixedly connected to the outside of the connecting ring 23. A guide end 22 is fixedly connected to the upper end of the connecting seat 25. Several wire holes 24 are opened in the middle of the guide end 22.

[0032] The insulation pipe fittings are inserted into the drainage pipe body 3 in sections. Adjacent pipe fittings are fixed by inserting the connecting ring 21 of the connecting ring 23. Low-temperature resistant sealant is applied to the joint to ensure leak prevention. The heating layer of the heating cylinder 8 uses a carbon fiber heating mesh, which is closely attached to the outer wall of the drainage pipe body 3, and the heat is directly conducted to the surface of the pipe body. When the temperature sensor 27 detects that the pipe body temperature is ≤2℃, the controller starts the heating grid of the corresponding pipe section in different areas to avoid heating the entire area. The temperature sensor 27 is arranged and collected through the inner hole of the connecting ring 23 to the wire hole 24 of the guide end 22, and finally connected to the intelligent temperature control system in the tunnel control room to achieve centralized monitoring.

[0033] The abutting part adopts a frustum-shaped inner protrusion 4, and the middle of the inner protrusion 4 is provided with a slot 5 for the wire to pass through. The end of the inner protrusion 4 is made of elastic material. The frustum-shaped inner protrusion 4 of the inner tube body elastically abuts against the drain pipe body 3 to form a buffer space, allowing the pipe body to deform slightly when frozen and avoid hard compression and breakage.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-altitude tunnel drainage anti-freezing device, comprising an anti-freezing assembly sleeved outside a drainage pipe body (3), characterized in that: The antifreeze component includes several independently set heat-insulating pipes, and adjacent heat-insulating pipes are connected by a connecting component (2). A heating cylinder (8) is sleeved on the outside of the drain pipe (3). The insulated pipe fitting includes an outer pipe (1) and an inner pipe body embedded inside the outer pipe (1). An insulation filling layer (6) is filled between the outer pipe (1) and the inner pipe body. The inner pipe body has several abutting parts inside, which abut against the outside of the drain pipe body (3), so that a hollow layer (7) is formed between the inner pipe body and the drain pipe body (3).

2. The high altitude tunnel drainage anti-freezing device according to claim 1, characterized in that: The connecting component (2) includes a connecting ring (23), and both sides of the connecting ring (23) are fixedly connected with sleeve rings (21) that are engaged with the end of the outer tube (1). The connecting ring (23) also has several snap-fit ​​ends that are engaged with the abutment part on both sides.

3. The high altitude tunnel drainage anti-freezing device according to claim 2, characterized in that: The snap-fit ​​end includes a set of spaced limiting protrusions (26), and two of the limiting protrusions (26) are fitted together on both sides of the abutment portion.

4. The high altitude tunnel drainage anti-freezing device according to claim 3, characterized in that: A temperature sensor (27) is embedded inside one of the limiting protrusions (26), and an inner hole is provided inside the connecting ring (23) for wires to pass through. The temperature sensor (27) is connected to an external controller via wires.

5. The high-altitude tunnel drainage and antifreeze device according to claim 4, characterized in that: The abutting part adopts an inner protrusion (4) in the shape of a frustum, and a slot (5) is provided in the middle of the inner protrusion (4) for the wire to pass through.

6. The high altitude tunnel drainage anti-freezing device according to any one of claims 2-5, characterized in that: A connecting seat (25) is fixedly connected to the outer side of the connecting ring (23), and a guide end (22) is fixedly connected to the upper end of the connecting seat (25). Several wire holes (24) are opened in the middle of the guide end (22).

7. The high altitude tunnel drainage frost protection apparatus of claim 6, wherein: The heating cylinder (8) has a heating layer inside, and a heating grid is installed inside the heating layer. The heating layer is closely attached to the drain pipe (3).

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