Frost heaving prevention side wall structure of prefabricated cable trench in cold region

Abstract

The utility model relates to the technical field of prefabricated cable trenches, in particular to a frost heaving prevention side wall structure of a prefabricated cable trench in a cold region, which comprises a cable trench main body, and a cover plate is arranged at the top end of the cable trench main body; the heating mechanism can perform heating and heat preservation on the side wall of the cable trench and prevent the cable trench from frost heaving; the heating mechanism is arranged on the inner wall of the cable trench main body; by arranging the heating mechanism, when the cable trench is used in a cold region, the heating plate in the mounting plate can heat the side wall of the cable trench and is matched with the first aluminum silicate heat preservation plate to preserve heat of the cable trench, and a cavity is formed between the first aluminum silicate heat preservation plate and the cable trench to store heat and heat the cable trench to prevent freezing; the second aluminum silicate heat preservation plate and the aluminum foil reflecting layer are matched to preserve heat and reflect the heat to the cable trench, the temperature sensor can monitor the temperature of the cable trench, heating and heat preservation can be conducted on the prefabricated cable trench, and frost heaving of the cable trench is prevented.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated cable trench technology, and in particular to a frost-resistant sidewall structure for prefabricated cable trenches in cold regions. Background Technology

[0002] Cable trenches are underground pipelines used for laying and replacing power or telecommunications cables. They also serve as the enclosure structure for the cables being laid. They come in various pipe structures, including rectangular, circular, and arched shapes. Precast cable trenches require insulation in cold regions to prevent thermal expansion.

[0003] A search of the Chinese patent "A Thermal Insulation and Sandproof Cable Trench" (publication number CN210693408U) reveals that this patent describes a structure where a frost-resistant layer and a thermal insulation layer are bonded to both sides of a polyurethane foam-filled insulation cavity. The insulation layer is filled with mineral wool, and a rubber sheet is embedded on the other side of the insulation layer. This structure provides good thermal insulation. While the device provides good insulation in harsh, low-temperature weather, the insulation cavity and the thermal and frost-resistant layers do not provide ideal insulation for the cable trench. In extremely cold regions, the temperature inside the insulation cavity can drop rapidly, and the temperature recovery is not timely, leading to frost heave in the cable trench. This makes it inconvenient to perform frost protection and insulation on prefabricated cable trenches, reducing the overall effectiveness of the device.

[0004] Therefore, a prefabricated cable trench anti-freeze heave sidewall structure for cold regions is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a frost-resistant sidewall structure for prefabricated cable trenches in cold regions in order to solve the above-mentioned problems, thereby improving the inconvenience of frost protection and insulation for prefabricated cable trenches.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a prefabricated cable trench anti-freezing sidewall structure for cold regions, comprising a cable trench body, the top of which is provided with a cover plate; a heating mechanism, which can heat and insulate the sidewall of the cable trench and prevent freezing and swelling, the heating mechanism being disposed on the inner wall of the cable trench body; wherein, the heating mechanism includes a first aluminum silicate insulation board fixedly installed on both sides of the inner wall of the cable trench body, an mounting plate fixedly connected to one side of the first aluminum silicate insulation board, several evenly distributed heating plates fixedly installed on the inner wall of the mounting plate, and anti-freezing components provided on both sides of the cover plate; the heating plates in the mounting plate can heat the sidewall of the cable trench, keeping the cable trench at a stable temperature, and then, in conjunction with the first aluminum silicate insulation board, insulate the cable trench and prevent freezing and swelling.

[0007] Preferably, the heating mechanism further includes a second aluminum silicate insulation board fixedly connected to one side of the mounting plate. An aluminum foil reflective layer is fixedly installed on one side of the second aluminum silicate insulation board. The second aluminum silicate insulation board can insulate the cable trench and reflect heat through the aluminum foil reflective layer, thereby providing heat insulation for the cable trench.

[0008] Preferably, temperature sensors are fixedly installed on both sides of the inner wall of the first aluminum silicate insulation board. The temperature sensors can monitor the temperature of the cable trench sidewall in real time to prevent the cable trench temperature from dropping.

[0009] Preferably, rock wool is fixedly installed on one side of the aluminum foil reflective layer, which can provide heat insulation for the cable trench and improve the insulation effect of the cable trench.

[0010] Preferably, an extruded polystyrene board is fixedly connected to one side of the rock wool. The extruded polystyrene board has a low thermal conductivity, which can insulate the cable trench and improve the moisture-proof and waterproof effect of the cable trench.

[0011] Preferably, the antifreeze component includes antifreeze plates fixedly connected to both sides of the inner wall of the cover plate. Baffles are fixedly connected to both sides of the inner wall of the cover plate. The baffles are disposed on the inner wall of the cable trench body. The antifreeze plates on both sides of the inner wall of the cover plate are filled with polyurethane foam, which can insulate the outer wall of the prefabricated cable trench. The cover plate limits the outermost extruded board on the cable trench through the two baffles, and limits and fixes the insulation device, which can improve the insulation effect of the cable trench and prevent the cable trench from freezing and swelling.

[0012] Preferably, two drainage channels are provided on both sides of the inner wall of the cable trench body. The drainage channels are inclined to one end, and the two drainage channels can discharge water or rainwater in the cable trench.

[0013] The beneficial effects of this utility model are:

[0014] 1. By setting up a heating mechanism, when the cable trench is used in cold regions, the heating plate inside the mounting plate can heat the side wall of the cable trench and work in conjunction with the first aluminum silicate insulation board to insulate it. The cavity formed between the first aluminum silicate insulation board and the cable trench can store heat, heating and preventing the cable trench from freezing. The second aluminum silicate insulation board, in conjunction with the aluminum foil reflective layer, can insulate the heat and reflect the heat onto the cable trench. The temperature sensor can detect the temperature of the cable trench, improving the effectiveness of the device. Rock wool can provide thermal insulation for the cable trench, and the extruded polystyrene board can provide moisture and water resistance while providing insulation. It can heat and insulate the precast cable trench and prevent the cable trench from freezing and swelling.

[0015] 2. By setting up anti-freeze components, when insulating the cable trench, the cover plate covering the cable trench can block rain and snow on the cable trench, improving the insulation effect. The anti-freeze plates on both sides of the inner wall of the cover plate are filled with polyurethane foam to insulate the cable trench. Two baffles can limit and fix the heating mechanism. The cable trench can be transported to the water flow through the drainage channel, which can insulate the cable trench and improve the use effect of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the heating mechanism structure of this utility model;

[0018] Figure 3 This is a partial structural diagram of the heating mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the antifreeze component structure of this utility model.

[0020] In the diagram: 1. Main body of cable trench; 2. Cover plate; 3. Heating mechanism; 301. First aluminum silicate insulation board; 302. Mounting plate; 303. Heating plate; 304. Second aluminum silicate insulation board; 305. Aluminum foil reflective layer; 306. Temperature sensor; 307. Rock wool; 308. Extruded polystyrene board; 309. Antifreeze component; 3091. Antifreeze plate; 3092. Baffle; 3093. Drainage trough. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In practical implementation: such as Figure 1-4As shown, a prefabricated cable trench anti-freezing sidewall structure for cold regions includes a cable trench body 1, with a cover plate 2 at the top of the cable trench body 1; and a heating mechanism 3, which is installed on the inner wall of the cable trench body 1 to heat and insulate the sidewall of the cable trench and prevent freezing and swelling. The heating mechanism 3 includes a first aluminum silicate insulation plate 301 fixedly installed on both sides of the inner wall of the cable trench body 1, an mounting plate 302 fixedly connected to one side of the first aluminum silicate insulation plate 301, and several evenly distributed heating plates 303 fixedly installed on the inner wall of the mounting plate 302. Anti-freezing components 309 are provided on both sides of the cover plate 2. When used in severe cold weather, the mounting plate 302 heats the heating plates 303 by energizing them with its internal power supply, thereby heating the cable trench body 1. The heat can be retained by the first aluminum silicate insulation plate 301 and the cavity on one side of it, reducing heat diffusion and heating the prefabricated cable trench to prevent freezing and swelling.

[0023] like Figure 2 and Figure 3 As shown, the heating mechanism 3 also includes a second aluminum silicate insulation board 304 fixedly connected to one side of the mounting plate 302. An aluminum foil reflective layer 305 is fixedly installed on one side of the second aluminum silicate insulation board 304. Temperature sensors 306 are fixedly installed on both sides of the inner wall of the first aluminum silicate insulation board 301. Rock wool 307 is fixedly installed on one side of the aluminum foil reflective layer 305. An extruded polystyrene board 308 is fixedly connected to one side of the rock wool 307. The second aluminum silicate insulation board 304 can insulate the heat generated by the mounting plate 302. The aluminum foil reflective layer 305 reflects the heat generated by the heating plate 303, improving the insulation effect of the device. The rock wool 307 insulates the cable trench body 1. The extruded polystyrene board 308 improves the moisture-proof and waterproof effect of the cable trench body 1. The temperature sensor 306 can monitor the temperature of the cable trench body 1 in real time to prevent the temperature of the cable trench body 1 from dropping. It can insulate the cable trench body 1 and provide the insulation effect of the device.

[0024] like Figure 4 As shown, the antifreeze component 309 includes antifreeze plates 3091 fixedly connected to both sides of the inner wall of the cover plate 2. Baffles 3092 are fixedly connected to both sides of the inner wall of the cover plate 2. The baffles 3092 are set on the inner wall of the cable trench body 1. Two drainage grooves 3093 are opened on both sides of the inner wall of the cable trench body 1. The drainage grooves 3093 are inclined to one end. When the cover plate 2 is installed on the cable trench body 1, the antifreeze plates 3091 on both sides of the inner wall of the cover plate 2 can protect and insulate the outer wall of the cable trench body 1. The cover plate 2 limits the extruded board 308 and several insulation materials on one side through the two baffles 3092, thereby improving the temperature performance of the device. The drainage grooves 3093 in the cable trench body 1 can discharge rainwater and can insulate and protect the prefabricated cable trench.

[0025] In use, this utility model uses a temperature sensor 306 to monitor the temperature of the cable trench body 1. When the temperature drops, the controller powers on the heating plate 303 to heat the cable trench body 1. This, in conjunction with the second aluminum silicate insulation board 304, insulates the cable trench body 1 and prevents heat dissipation. The aluminum foil reflective layer 305 on one side reflects the heat, increasing the temperature of the cable trench body 1. Rock wool 307 further enhances the insulation effect of the cable trench body 1. The extruded polystyrene board 308, placed on the outermost side, insulates the cable trench body 1 and intercepts external rain and snow. The cover plate 2 is snapped onto the cable trench body 1. The cover plate 2 is limited by two baffles 3092 to the extruded polystyrene board 308. The cover plate 2, in conjunction with the antifreeze board 3091, insulates the outer wall of the cable trench body 1.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prefabricated cable trench anti-frost heave sidewall structure for cold regions, characterized in that, include: The cable trench body (1) is provided with a cover plate (2) at the top of the cable trench body (1); The heating mechanism (3) is provided on the inner wall of the cable trench body (1) to heat and insulate the side wall of the cable trench and prevent the cable trench from freezing. The heating mechanism (3) includes a first aluminum silicate insulation board (301) fixedly installed on both sides of the inner wall of the cable trench body (1). An installation plate (302) is fixedly connected to one side of the first aluminum silicate insulation board (301). Several evenly distributed heating plates (303) are fixedly installed on the inner wall of the installation plate (302). Antifreeze components (309) are provided on both sides of the cover plate (2).

2. The prefabricated cable trench anti-frost heave sidewall structure for cold regions according to claim 1, characterized in that: The heating mechanism (3) further includes a second aluminum silicate insulation board (304) fixedly connected to one side of the mounting plate (302), and an aluminum foil reflective layer (305) is fixedly installed on one side of the second aluminum silicate insulation board (304).

3. The prefabricated cable trench anti-frost heave sidewall structure for cold regions according to claim 1, characterized in that: Temperature sensors (306) are fixedly installed on both sides of the inner wall of the first aluminum silicate insulation board (301).

4. The prefabricated cable trench anti-frost heave sidewall structure for cold regions according to claim 2, characterized in that: Rock wool (307) is fixedly installed on one side of the aluminum foil reflective layer (305).

5. The anti-freezing heave sidewall structure for prefabricated cable trenches in cold regions according to claim 4, characterized in that: One side of the rock wool (307) is fixedly connected to an extruded polystyrene board (308).

6. The anti-frost heave sidewall structure for prefabricated cable trenches in cold regions according to claim 1, characterized in that: The antifreeze component (309) includes antifreeze plates (3091) fixedly connected to both sides of the inner wall of the cover plate (2), and baffles (3092) are fixedly connected to both sides of the inner wall of the cover plate (2). The baffles (3092) are disposed on the inner wall of the cable trench body (1).

7. The prefabricated cable trench anti-frost heave sidewall structure for cold regions according to claim 1, characterized in that: Two drainage channels (3093) are provided on both sides of the inner wall of the cable trench body (1), and the drainage channels (3093) are inclined to one end.

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