Modular underground cable channel assembly system

Abstract

The utility model relates to a modularized underground cable channel assembly system, and belongs to the technical field of underground cable channels. Comprising a cable channel body, the cable channel body comprises a plurality of module channel sections which can be assembled, fasteners used for connection are arranged between the module channel sections, and a waterproof pad is arranged between every two module channel sections in a pressing mode; the module channel section comprises one of a linear channel section, a corner channel section, a three-way channel section, a wellhead channel section and a ventilation channel section; wherein the linear channel section, the corner channel section, the three-way channel section, the wellhead channel section or the ventilation channel section at least consists of a channel bottom plate, a channel side plate and a channel top plate; a cable support is installed on the inner wall of the channel side plate. The utility model provides a modularized underground cable channel assembly system, which adopts modularized assembly while ensuring the structure, and greatly reduces the occurrence of water seepage through a sealing structure.

Description

Technical Field

[0001] The utility model relates to a modular underground cable channel assembly system, belonging to the technical field of underground cable channels. Background Art

[0002] A cable channel is a closed, narrow structure used to lay cables. It is usually built with non-combustible materials such as bricks and stones, and can accommodate a large number of cables laid on cable racks. This structure not only helps to better protect the cables, but also facilitates people's inspection and maintenance of the cables.

[0003] Since the cable channel does not have waterproof measures, the old brick-built cable channel is prone to water seepage and water accumulation. The acidic rainwater will corrode the internal structure of the cable channel, posing a great safety hazard. The existing Chinese invention patent with announcement number CN114294016B provides a reinforcement device, manufacturing method and cable tunnel assembly for a cable tunnel. The reinforcement device for a cable tunnel includes: a frame structure and a waterproof structure, wherein the frame structure includes: a plurality of first longitudinal beams, which are arranged at intervals along a first direction, and the first longitudinal beams extend along a second direction perpendicular to the first direction; a plurality of second longitudinal beams, which are arranged at intervals along the first direction, and a plurality of second longitudinal beams are arranged corresponding to a plurality of first longitudinal beams; a plurality of first cross beams, and adjacent two first longitudinal beams are connected by a plurality of first cross beams; a plurality of second cross beams, and the first longitudinal beams and the second longitudinal beams are connected by a plurality of second cross beams; a cable is arranged between adjacent two second cross beams, and the cable is made of shape memory alloy. The stability of the tunnel is increased by internal reinforcement, thereby reducing water seepage.

[0004] In the process of implementing the technical solution of this application, the inventor discovered that there are at least the following technical problems in the prior art:

[0005] The existing cable tunnels are not well sealed due to structural problems. Although the above-mentioned reinforced structure is adopted, it is still difficult to avoid water seepage in the cable channel. When water seepage occurs, water seeps into the cable channel and forms condensation, which will greatly reduce the insulation level of power facilities and equipment, easily causing short circuits and accidents, seriously affecting the reliability and continuity of power supply. Utility Model Content

[0006] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a modular underground cable channel assembly system, which adopts modular assembly while ensuring the structure, and greatly reduces the occurrence of water seepage through the sealing structure.

[0007] The modular underground cable channel assembly system of the utility model comprises a cable channel body, the cable channel body comprises a plurality of assembleable module channel sections, fasteners for connection are arranged between the module channel sections, and a waterproof pad is pressed between two module channel sections;

[0008] The module channel section includes one of a straight channel section, a corner channel section, a three-way channel section, a wellhead channel section or a ventilation channel section;

[0009] wherein the straight channel section, the corner channel section, the three-way channel section, the wellhead channel section or the ventilation channel section is composed of at least a channel bottom plate, a channel side plate and a channel top plate;

[0010] A cable bracket is installed on the inner wall of the channel side panel.

[0011] Furthermore, the channel bottom plate and the channel side plates can be manufactured by integral molding.

[0012] Furthermore, the straight channel sections, the corner channel sections, the three-way channel sections, the wellhead channel sections or the ventilation channel sections may be connected by pipelines, and a sealing component is provided at the connection between the pipeline and the module channel section.

[0013] Furthermore, the connecting surfaces of the plurality of module channel sections are provided with horizontal mounting holes, and the corresponding channel side panels are provided with receiving grooves corresponding to the horizontal mounting holes, and fasteners are installed in the mounting holes.

[0014] Furthermore, the fastener includes a double-headed stud extending into the horizontal mounting hole, and a matching nut is installed in the receiving groove corresponding to the double-headed stud.

[0015] Furthermore, a drainage groove is opened at the bottom of the module channel section. After the module channel section is assembled, the drainage grooves are connected together. At least one water collection well is provided in the module channel section, and the drainage groove is connected to the water collection well.

[0016] Furthermore, the water collection well can be made of a seepage well structure.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model adopts modular assembly, which enhances the overall structural performance. At the same time, it can be produced by factory prefabrication to shorten the construction period. By pressing a waterproof pad between the two module channel sections, the occurrence of water seepage is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 It is a top view of embodiment 1 of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a straight channel section of Example 1 of the utility model;

[0022] Figure 4This is a front view of a straight channel section of Example 1 of the utility model;

[0023] Figure 5 This is a schematic diagram of the wellhead channel section structure of Example 1 of the utility model;

[0024] Figure 6 It is a front view of the structural schematic diagram of Embodiment 1 of the present utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the corner channel section of Example 1 of the utility model;

[0026] Figure 8 This is a front view of the corner channel section of Example 1 of the utility model;

[0027] Fig. 9 This is a schematic diagram of the structure of the three-way channel section of Example 1 of the utility model;

[0028] Fig.10 This is a front view of a three-way channel section of Example 1 of the utility model;

[0029] Fig.11 This is a schematic diagram of the structure of the ventilation channel section of Example 1 of the utility model;

[0030] Fig.12 This is a front view of the ventilation channel section of Example 1 of the utility model;

[0031] Fig.13 It is a top view of the pipeline connection structure of Example 1 of the utility model;

[0032] Fig.14 yes Fig.13 Full section view at AA in the middle;

[0033] Fig.15 yes Fig.13 Full section view at the middle BB;

[0034] In the figure:

[0035] 1. Ventilation channel section; 11. Fire wall; 2. Corner channel section; 3. Three-way channel section; 4. Wellhead channel section; 5. Straight channel section; 6. Cable bracket; 7. Drainage trough; 8. Water collection well; 9. Pipeline; 91. Sealing assembly; 911. Inner pressure ring; 912. Elastic pad; 913. Outer pressure ring; 914. Sealing pad; 915. Sealing block;

[0036] 100. Fastener; 101. Double-ended stud; 102. Nut; 200. Receiving groove; 300. Waterproof pad. DETAILED DESCRIPTION

[0037] Example 1

[0038] like Figure 1 to Figure 15 As shown, the modular underground cable channel assembly system described in the utility model includes a cable channel body, the cable channel body includes a plurality of modular channel sections that can be assembled, fasteners 100 for connection are provided between the modular channel sections, and a waterproof pad 300 is pressed between the two modular channel sections. The waterproof pad 300 can adopt an existing waterproof pad, and all pads with waterproof function should be included in this application;

[0039] The module channel section includes one of a straight channel section 5, a corner channel section 2, a three-way channel section 3, a wellhead channel section 4 or a ventilation channel section 1;

[0040] The straight channel section 5, the corner channel section 2, the three-way channel section 3, the wellhead channel section 4 or the ventilation channel section 1 is composed of at least a channel bottom plate, a channel side plate and a channel top plate; when the channel bottom plate, the channel side plate and the channel top plate are installed, waterproof gaskets are installed on the contact surfaces to increase the waterproofness.

[0041] A protective wall 11 is installed in the ventilation channel section 1, and a fire door is installed on the protective wall. Its main function is to isolate smoke and prevent fire, prevent the spread of fire, and provide valuable time and space for escape and evacuation. Fire doors are usually installed at appropriate locations inside the cable channel, such as cable channels leading to control rooms, busbar rooms, etc. In addition to strict sealing, fire doors and fire-retardant sections will also be installed. A fire door will be installed at intervals of 50m in the cable straight trench, and fire-retardant sections will be installed on both sides of the fire door. The two ends of the fire-retardant section are sealed with fire-retardant putty, and the sealing length of each end is not less than 150mm. Such a design effectively separates the cables to prevent the spread of fire.

[0042] A cable bracket 6 is installed on the inner wall of the channel side plate.

[0043] The channel bottom plate and channel side plates can be manufactured by integral molding, and the overall structure is more stable.

[0044] The straight channel section 5, the corner channel section 2, the three-way channel section 3, the wellhead channel section 4 or the ventilation channel section 1 can be connected by a pipeline 9, and a sealing component 91 is provided at the connection between the pipeline 9 and the module channel section.

[0045] The sealing assembly 91 includes an inner pressure ring 911 and an outer pressure ring 913. The inner pressure ring 911 and the outer pressure ring 913 are respectively installed on both sides of the reserved installation hole of the pipeline 9. The inner pressure ring 911 and the outer pressure ring 913 are connected by bolts. An elastic pad 912 is installed between the inner pressure ring 911 and the outer pressure ring 913. When the inner pressure ring 911 and the outer pressure ring 913 are tightened, the elastic pad 912 is squeezed to fix the pipeline 9. A sealing pad 914 is also provided between the inner pressure ring 911 and the outer pressure ring 913 and the channel wall. A sealing block 915 is also provided between the inner pressure ring 911 and the cable inside the pipeline 9. The sealing block 915 is fixed by bolting through an internal flange. The sealing block is set with an elastic sealing sleeve. The elastic pad 912, the elastic sealing sleeve or the sealing pad 914 can all be made of elastic rubber material or other elastic waterproof sealing materials.

[0046] Horizontal mounting holes are provided on the connecting surfaces of the plurality of module channel sections, and receiving grooves 200 are provided on the corresponding channel side plates corresponding to the horizontal mounting holes, and fasteners 100 are installed in the mounting holes.

[0047] The fastener 100 includes a stud 101 extending into the horizontal mounting hole, and a matching nut 102 is installed in the receiving groove 200 corresponding to the stud 101 .

[0048] A drainage groove 7 is provided at the bottom of the module channel section. After the module channel section is assembled, the drainage grooves 7 are connected together. At least one water collection well 8 is provided in the module channel section, and the drainage grooves 7 are connected to the water collection well 8.

[0049] The water collection well 8 can be made of a seepage well structure.

[0050] Working process or working principle:

[0051] Step 1: Coordinate point layout, trenching and support:

[0052] Accurate surveys should be carried out in the early stages to determine coordinate points and ensure that the layout is accurate.

[0053] When digging trenches, the appropriate excavation method and support method should be determined according to the geological conditions to ensure construction safety.

[0054] For deeper trenches, steel sheet piles or other effective support methods should be used to prevent slope instability.

[0055] Step 2: Cast-in-place foundation cushion:

[0056] Before pouring the foundation cushion layer, the base should be cleaned to ensure that there is no debris or water accumulation.

[0057] According to the design requirements, the drainage slope is set and holes for water collection wells are reserved to ensure smooth drainage.

[0058] Install the cable channel components:

[0059] When installing U-shaped walls (the channel bottom plate and channel side plates are integrally formed), top plates and other components, ensure that the connections between the components are tight and without gaps.

[0060] When using waterproof pad 300 and studs or single-head bolts, ensure that the tightening force is moderate to prevent over-tightening or over-loosening.

[0061] Step 3: Laying direct buried cable conduit:

[0062] The conduit should be made of materials that meet the requirements of the specifications to ensure that it has good electrical properties and mechanical strength.

[0063] When laying the pipe 9, it should be kept flat and without bends to ensure that the cable can be inserted smoothly.

[0064] Install the manhole cover and other accessories for the cable inspection well:

[0065] Manhole covers should be made of materials that meet design requirements and have sufficient load-bearing capacity and anti-theft performance.

[0066] When installing the manhole cover, make sure it is flush with the surrounding ground and there is no shaking.

[0067] Step 4: Waterproofing:

[0068] The joints of the module channel sections are the focus of waterproof treatment and should be sealed with waterproof materials.

[0069] When applying waterproof coating to the entire outside of the module channel section, ensure that the coating is even and without omissions to improve the waterproof performance of the channel.

[0070] Step 5: Backfilling:

[0071] Before backfilling, check whether all components inside the module channel section have been installed and nothing is missing.

[0072] Backfilling should be done in layers, and the compaction degree of each layer should meet the design requirements to prevent settlement and deformation.

[0073] Step 6: Quality inspection and acceptance:

[0074] After the construction is completed, the cable channel system should be subject to a comprehensive quality inspection, including structural dimensions, waterproof performance, cable bracket installation and other aspects.

[0075] After passing the inspection, acceptance will be carried out in accordance with relevant specifications to ensure that the channel system meets the design requirements and usage functions.

[0076] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A modular underground cable channel assembly system, characterized in that: It comprises a cable channel body, which comprises a plurality of assembleable module channel sections, fasteners (100) for connection are arranged between the module channel sections, and a waterproof pad (300) is pressed between two module channel sections; The module channel section comprises one of a straight channel section (5), a corner channel section (2), a three-way channel section (3), a wellhead channel section (4) or a ventilation channel section (1); The straight channel section (5), the corner channel section (2), the three-way channel section (3), the wellhead channel section (4) or the ventilation channel section (1) is at least composed of a channel bottom plate, a channel side plate and a channel top plate; A cable bracket (6) is installed on the inner wall of the channel side plate.

2. The modular underground cable channel assembly system according to claim 1, characterized in that: The channel bottom plate and the channel side plates can be manufactured by integral molding.

3. The modular underground cable channel assembly system according to claim 2, characterized in that: The straight channel section (5), the corner channel section (2), the three-way channel section (3), the wellhead channel section (4) or the ventilation channel section (1) can be connected by a pipeline (9), and a sealing component (91) is provided at the connection between the pipeline (9) and the module channel section.

4. The modular underground cable channel assembly system according to any one of claims 1 to 3, characterized in that: The connecting surfaces of the plurality of module channel sections are provided with horizontal mounting holes, and corresponding channel side plates are provided with receiving grooves (200) corresponding to the horizontal mounting holes, and fasteners (100) are installed in the mounting holes.

5. The modular underground cable channel assembly system according to claim 4, characterized in that: The fastener (100) comprises a stud (101) extending into the horizontal mounting hole, and a matching nut (102) is installed in the receiving groove (200) corresponding to the stud (101).

6. The modular underground cable channel assembly system according to any one of claims 1 to 3, characterized in that: A drainage groove (7) is provided at the bottom of the module channel section. After the module channel section is assembled, the drainage grooves (7) are connected together. At least one water collection well (8) is provided in the module channel section, and the drainage groove (7) is connected to the water collection well (8).

7. The modular underground cable channel assembly system according to claim 6, characterized in that: The water collection well (8) can be made of a seepage well structure.

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