Fireproof structure suitable for cable laying

Abstract

The utility model provides a fireproof structure suitable for cable laying, which belongs to the technical field of cable fire prevention and comprises a first fireproof partition plate, a second fireproof partition plate, high-temperature-resistant silica gel and a fireproof expansion strip, and the first fireproof partition plate is provided with a first cable via hole suitable for a cable to pass through; the second fireproof separator plate is provided with a second cable through hole which is suitable for a cable to pass through. The high-temperature-resistant silica gel is filled in the first cable via hole and the second cable via hole, and the fireproof expansion strip is arranged on the periphery of the cable, is close to the first fireproof partition plate or the second fireproof partition plate and is used for expanding in a fire disaster so as to seal a gap between the periphery of the cable and the first fireproof partition plate or the second fireproof partition plate and prevent fire from spreading. The fireproof structure suitable for cable laying provided by the utility model has the technical effects that fire can be well isolated, the fire is prevented from spreading into a cable trench and a power distribution cabinet, the fire blocking effect is good, the construction is easy, and the sealing performance is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable fire prevention, and more specifically, relates to a fire prevention structure suitable for cable laying. Background Technique

[0002] In the power system, distribution cabinets and cable trenches are important channels for power transmission, but at the same time, they are also potential paths for fire spread. The cable trench is formed by a groove surrounded by U-shaped bricks, and the upper end of the cable trench is covered with a trench cover plate. Cables are laid between the distribution cabinet and the cable trench. The traditional fire prevention and sealing method is to add a fire wall between the distribution cabinet and the cable trench, and let the cable pass through the fire wall. To a certain extent, the fire wall can play a role in fire prevention. However, this fire prevention and sealing method has problems such as poor sealing performance, easy aging, and complex construction, and cannot effectively prevent the spread of fire between the distribution cabinet and the cable trench.

[0003] Therefore, it is necessary to design a fire prevention structure that can play a fire prevention role for both the distribution cabinet and the cable trench at the same time. When a fire occurs, the fire will not spread into the interior of the distribution cabinet and the cable trench, playing a role in blocking the fire source to a certain extent. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fire prevention structure suitable for cable laying, aiming to solve the technical problems of poor sealing performance of the fire wall between the distribution cabinet and the cable trench in the prior art, poor fire blocking effect, and complex construction of the fire wall.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a fire prevention structure suitable for cable laying, including:

[0006] A first refractory partition board is arranged at one end of the cable trench close to the distribution cabinet, and is used for fixedly connecting the bricks and the trench cover plate at one end of the cable trench. The first refractory partition board is provided with a first cable through hole suitable for the cable to pass through;

[0007] A second refractory partition board is arranged on the distribution cabinet. The second refractory partition board is provided with a second cable through hole suitable for the cable to pass through;

[0008] High-temperature resistant silica gel is filled in the first cable through hole and the second cable through hole, and is used for sealing the gap between the first refractory partition board or the second refractory partition board and the cable;

[0009] A fireproof expansion strip is arranged on the outer periphery of the cable and close to the first refractory partition board or the second refractory partition board, and is used for expanding during a fire to close the gap between the cable and the first refractory partition board or the second refractory partition board, and prevent the spread of fire.

[0010] In a possible implementation, a visual hole is formed in the first refractory partition board, a fireproof glass is installed in the visual hole, and the fireproof glass is hermetically connected to the first refractory partition board.

[0011] In a possible implementation, mounting holes are provided at the end corners of the first refractory partition board, and fasteners are inserted through the mounting holes. The fasteners are used for fixedly connecting the brick body and the side part of the trench cover plate.

[0012] In a possible implementation, a water passing groove is formed at the bottom of the first refractory partition board. A water passing hole suitable for water flow is formed between the water passing groove and the inner bottom of the cable trench. A plug is filled in the water passing groove, and the plug is used for blocking the water passing hole.

[0013] In a possible implementation, a cable support plate is inserted through the first cable passing hole, a cable is placed on the cable support plate, the bottom of the cable support plate is placed on the bottom wall of the first cable passing hole, and the cross-sectional shape of the cable support plate is U-shaped in a plane parallel to the first refractory partition board.

[0014] In a possible implementation, the first refractory partition board includes two plate bodies that are detachably connected to each other. Clasps that cooperate with each other are respectively provided on the two plate bodies, and at least one of the plate bodies is provided with the first cable passing hole.

[0015] In a possible implementation, after the first refractory partition board is fixedly connected to the cable trench, the two plate bodies are arranged vertically, and the clasps are arranged close to the connection part of the two plate bodies.

[0016] In a possible implementation, the first refractory partition board includes four plate bodies that are detachably connected to each other. Clasps that cooperate with each other are respectively provided on the four plate bodies, and the four plate bodies are arranged in a rectangular array.

[0017] In a possible implementation, after the first refractory partition board is fixedly connected to the cable trench, grooves are provided at one ends of the two plate bodies located in the upper part or the lower part and close to each other, and the two grooves are butted and combined to form the first cable passing hole. The clasps are arranged close to the connection part of the four plate bodies.

[0018] In a possible implementation, fireproof coatings are provided on one side surface of the first refractory partition board connected to the brick body and one side surface of the second refractory partition board connected to the power distribution cabinet. The fireproof coatings are suitable for attaching to the cable trench or the power distribution cabinet.

[0019] The beneficial effects of a fireproof structure suitable for cable laying provided by the present utility model are as follows: Compared with the prior art, the fireproof structure suitable for cable laying of the present utility model includes a first fireproof partition board, a second fireproof partition board, high-temperature resistant silica gel, and a fireproof expansion strip. The first fireproof partition board is arranged at one end of the cable trench close to the distribution cabinet, and is used for fixedly connecting the brick body and the trench cover plate at one end of the cable trench. A first cable through hole suitable for the cable to pass through is opened on the first fireproof partition board; the second fireproof partition board is arranged on the distribution cabinet, and a second cable through hole suitable for the cable to pass through is opened on the second fireproof partition board; the high-temperature resistant silica gel is filled in the first cable through hole and the second cable through hole, and is used for sealing the gap between the first fireproof partition board or the second fireproof partition board and the cable; the fireproof expansion strip is arranged on the outer periphery of the cable and close to the first fireproof partition board or the second fireproof partition board, and is used for expanding in case of fire to close the gap between the cable and the first fireproof partition board or the second fireproof partition board, and prevent the spread of fire. It solves the technical problems of poor sealing performance of the firewall between the distribution cabinet and the cable trench, poor fire blocking effect, and complex construction of the firewall, and has the technical effects of being able to well block the fire, prevent the fire from spreading to the inside of the cable trench and the distribution cabinet, having a good fire blocking effect, being easy to construct, and having good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram after the installation of the first fireproof partition board of a fireproof structure suitable for cable laying provided by an embodiment of the present utility model;

[0022] Figure 2 It is a schematic structural diagram after the installation of the second fireproof partition board of a fireproof structure suitable for cable laying provided by an embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram after the installation of the first fireproof partition board of a fireproof structure suitable for cable laying provided by an embodiment of the present utility model;

[0024] Figure 4 It is a top view of a fireproof structure suitable for cable laying provided by an embodiment of the present utility model after the installation of the first fireproof partition board;

[0025] Figure 5 It is a schematic structural diagram after the installation of the first fireproof partition board of a fireproof structure suitable for cable laying provided by another embodiment of the present utility model;

[0026] Figure 6 The front view of the first refractory partition structure of a fireproof structure applicable to cable laying provided by another embodiment of the present utility model;

[0027] Figure 7 The front view of the first refractory partition structure of a fireproof structure applicable to cable laying provided by another embodiment of the present utility model;

[0028] Figure 8 is Figure 7 The schematic structural view after multiple plate bodies in [] are separated from each other;

[0029] Figure 9 The schematic view of the first refractory partition structure of a fireproof structure applicable to cable laying provided by another embodiment of the present utility model.

[0030] Explanation of reference numerals:

[0031] 1. First refractory partition; 11. First cable through-hole; 12. Plate body; 13. Buckle; 14. Groove; 2. Second refractory partition; 21. Second cable through-hole; 3. High-temperature resistant silica gel; 4. Fireproof expansion strip; 5. Cable trench; 51. Brick body; 52. Trench cover plate; 6. Visual hole; 7. Installation hole; 8. Water trough; 9. Cable support plate; 10. Cable. Specific embodiments

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0033] Please refer to Figures 1 to 9, a fireproof structure applicable to cable laying provided by the present utility model will be described hereinafter. The fireproof structure applicable to cable laying includes a first fireproof partition 1, a second fireproof partition 2, high-temperature resistant silica gel 3 and a fireproof expansion strip 4. The first fireproof partition 1 is arranged at one end of the cable trench 5 close to the power distribution cabinet, and is used for fixedly connecting the brick body 51 and the trench cover plate 52 at one end of the cable trench 5. A first cable through hole 11 suitable for the cable 10 to pass through is formed on the first fireproof partition 1; the second fireproof partition 2 is arranged on the power distribution cabinet, and a second cable through hole 21 suitable for the cable 10 to pass through is formed on the second fireproof partition 2; the high-temperature resistant silica gel 3 is filled in the first cable through hole 11 and the second cable through hole 21, and is used for sealing the gap between the first fireproof partition 1 or the second fireproof partition 2 and the cable 10; the fireproof expansion strip 4 is arranged on the outer periphery of the cable 10 and close to the first fireproof partition 1 or the second fireproof partition 2, and is used for expanding during a fire to close the gap between the periphery of the cable 10 and the first fireproof partition 1 or the second fireproof partition 2, and preventing the spread of fire.

[0034] Compared with the prior art, the fireproof structure applicable to cable 10 laying provided by the present utility model can play a role in blocking or separating the fire by respectively arranging the first fireproof partition 1 and the second fireproof partition 2 at the positions of the cable trench 5 and the power distribution cabinet. The high-temperature resistant silica gel 3 arranged can improve the sealing performance. By using the variability of the silica gel, a sealing barrier is formed after the cable 10 passes through, preventing the fire from entering the cable trench 5 and the power distribution cabinet. The fireproof expansion strip 4 arranged can rapidly expand during a fire, close the gap around the cable 10, and effectively prevent the spread of fire, solving the technical problems of poor sealing performance of the firewall between the power distribution cabinet and the cable trench 5, poor fire blocking effect, and complex construction of the firewall, and having the technical effects of being able to well block the fire, prevent the fire from spreading into the cable trench 5 and the interior of the power distribution cabinet, having a good fire blocking effect, being easy to construct and having good sealing performance.

[0035] The high-temperature resistant silica gel 3 in this embodiment is a kind of silica gel in the prior art, having the characteristic of high temperature resistance and being variable. The fireproof expansion strip 4 is an expansion material with fireproof performance in the prior art. In this embodiment, it can be in a strip shape and will expand when encountering a fire source or being exposed to high temperature, thereby blocking the gap between the first fireproof partition 1 or the second fireproof partition 2 and the cable 10, playing a role in blocking the fire. The above-mentioned first fireproof partition 1 and second fireproof partition 2 are both high-temperature resistant plate bodies in the prior art, made of metal or non-metal materials.

[0036] In some embodiments, please refer to Figure 5The first fireproof partition 1 is provided with a viewing hole 6, and a fireproof glass is installed in the viewing hole 6, and the fireproof glass is sealed and connected to the first fireproof partition 1. In order to be able to see the situation inside the cable trench 5, the staff can see the situation inside the cable trench 5 through the viewing hole 6 without removing the trench cover 52. In this embodiment, the viewing hole 6 is located above the first cable through hole 11. The fireproof glass has fireproof performance and will not break when encountering high temperature, that is, it will not allow the fire to spread to the inside of the cable trench 5. The shape of the fireproof glass is compatible with the shape of the viewing hole 6.

[0037] In order to stably fix the first fireproof partition 1, in some embodiments, see Figures 6 to 9 , a mounting hole 7 is provided at the end corner of the first fireproof partition 1, and a fastener is inserted into the mounting hole 7, and the fastener is used to fix the brick body 51 and the side of the trench cover 52. The fastener is generally a screw, an expansion bolt, etc., which can achieve a fixed connection with the brick body 51 and the trench cover 52. In this embodiment, the brick body 51 is made of multiple bricks by masonry to form a U-shaped trough structure, and the end of the trench cover 52 is arranged vertically flush with the end of the brick body 51, so that the first fireproof partition 1 can fit on the brick body 51 and the side of the trench cover 52. In this embodiment, the first fireproof partition 1 is rectangular, which is compatible with the shape of the cable trench 5.

[0038] In order to allow water (such as rainwater) in the cable trench 5 to flow out, in some embodiments, see Figure 9 A water channel 8 is provided at the bottom of the first fireproof partition 1, and a water hole suitable for water flow is formed between the water channel 8 and the bottom of the inner side of the cable trench 5. The water channel 8 is filled with a plug, which is used to block the water hole. When there is rainwater inside the cable trench 5, the rainwater can be discharged by opening the plug. When drainage is not required, the plug can be sealed again to play a role in fire prevention, that is, to prevent the fire from spreading from the water hole to the cable trench 5.

[0039] In the present embodiment, two water channels 8 are provided, but they may also be appropriately provided as required, such as one or more.

[0040] In some embodiments, see Figure 1 , Figure 3 and Figure 5, a cable tray 9 is inserted into the first cable through-hole 11, a cable 10 is placed on the cable tray 9, the bottom of the cable tray 9 is placed on the bottom wall of the first cable through-hole 11, and the cross-sectional shape of the cable tray 9 is U-shaped along a plane parallel to the first fireproof partition 1. Since there are multiple cables 10 arranged side by side, in this embodiment, due to the large number of cables 10, the first cable through-holes 11 are two arranged vertically, and multiple cables 10 pass through the two first cable through-holes 11. To ensure that the multiple cables 10 do not become scattered and are neatly arranged, a cable tray 9 is provided, and one cable tray 9 supports multiple cables 10, so as to ensure that the cables 10 are neatly arranged. It should be noted that the cable tray 9 is made of fireproof or fire-resistant materials. The length of the cable tray 9 is not limited and can also extend to the power distribution cabinet.

[0041] In some embodiments, please refer to Figure 6 , the first fireproof partition 1 includes two plate bodies 12 detachably connected to each other, and buckles 13 that cooperate with each other are respectively provided on the two plate bodies 12, and at least one plate body 12 is provided with a first cable through-hole 11. The two plate bodies 12 are detachably connected to each other, and the buckles 13 used are the mother-and-son buckles in the prior art, which are metal mother-and-son buckles with fireproof characteristics. After being engaged with each other, they can be combined to form the first fireproof partition 1. Three groups of buckles 13 are arranged at intervals along the length direction between the two plate bodies 12. When the first fireproof partition 1 is not needed, the buckles 13 can be disassembled, that is, the two plate bodies 12 are separated from each other, without occupying space, and are convenient for transportation and storage. A mother buckle is provided on one plate body 12 and a son buckle is provided on the other plate body 12, and the mother-and-son buckles are engaged with each other. The buckles 13 can be provided on both the front and the back of the first fireproof partition 1.

[0042] In some embodiments, please refer to Figure 6 , after the first fireproof partition 1 is fixedly connected to the cable trench 5, the two plate bodies 12 are arranged vertically, and the buckles 13 are arranged close to the connection part of the two plate bodies 12. The length of the first fireproof partition 1 is greater than the width of the cable trench 5, and the height is greater than the height of the cable trench 5. When necessary, it is fixed to the brick body 51 and the trench cover plate 52 by fasteners. The two plate bodies 12 are arranged vertically. At this time, the structure of the arrangement method is relatively stable and will not be misaligned.

[0043] In some embodiments, please refer to Figures 7 to 8, the first refractory partition 1 includes four plate bodies 12 that are detachably connected to each other. Snap fasteners 13 that cooperate with each other are respectively provided on the four plate bodies 12, and the four plate bodies 12 are arranged in a rectangular array. The snap fasteners 13 have the same structure as the above-mentioned snap fasteners 13 and are arranged at appropriate positions on the four plate bodies 12 as required, enabling the four plate bodies 12 to be combined to form an integral first refractory partition 1. The four plate bodies 12 are separable from each other, do not occupy space, and are convenient for transportation and storage. A male snap is provided on one of the two adjacent plate bodies 12, and a female snap is provided on the other plate body 12, and the male and female snaps are engaged with each other.

[0044] In some embodiments, referring to Figures 7 to 8 , after the first refractory partition 1 is fixedly connected to the cable trench 5, grooves 14 are provided at the ends of the two plate bodies 12 located in the upper or lower part that are close to each other, and the two grooves 14 are butted and combined to form a first cable through-hole 11. The snap fasteners 13 are provided close to the joints of the four plate bodies 12. In this embodiment, two first cable through-holes 11 are provided, that is, each two grooves 14 are combined with each other.

[0045] In some embodiments, fireproof coatings (not shown in the figure) are provided on the side surface of the first refractory partition 1 connected to the brick body 51 and the side surface of the second refractory partition 2 connected to the power distribution cabinet. The fireproof coatings are suitable for attaching to the cable trench 5 or the power distribution cabinet. The fireproof coatings can seal the gaps between the first refractory partition 1 and the cable trench 5, and can also seal the gaps between the second refractory partition 2 and the power distribution cabinet, further improving the fireproof effect.

[0046] The utility model has excellent fireproof performance and mechanical strength, the construction structure is simple, the construction is convenient, and it can effectively improve the fireproof performance between the power distribution cabinet and the cable trench 5. The combined use of the refractory partition, the high-temperature resistant silica gel 3 and the fireproof expansion strip 4 realizes multiple fireproof barriers and effectively prevents the spread of fire between the power distribution cabinet and the cable trench 5, which is of great significance for improving the fireproof safety of the power system.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fireproof structure suitable for cable laying, characterized in that: include: A first fireproof partition is provided at one end of the cable trench and close to the power distribution cabinet, and is used to fix the brick body and trench cover plate connected at one end of the cable trench, and a first cable through hole suitable for the cable to pass through is provided on the first fireproof partition; A second fireproof partition is provided on the power distribution cabinet, and a second cable through hole suitable for the cable to pass through is provided on the second fireproof partition; High temperature resistant silica gel, filled in the first cable through hole and the second cable through hole, used to seal the gap between the first fire-resistant partition or the second fire-resistant partition and the cable; The fireproof expansion strip is arranged on the outer periphery of the cable and is arranged close to the first fireproof partition or the second fireproof partition, and is used to expand in case of fire to close the gap between the cable and the first fireproof partition or the second fireproof partition to prevent the fire from spreading.

2. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: A viewing hole is provided on the first fireproof partition, and fireproof glass is installed in the viewing hole. The fireproof glass is sealed and connected to the first fireproof partition.

3. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: The end corners of the first fireproof partition are provided with mounting holes, and fasteners are inserted into the mounting holes. The fasteners are used to fix and connect the brick body and the side of the trench cover.

4. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: A water groove is provided at the bottom of the first fireproof partition, and a water hole suitable for water to flow through is formed between the water groove and the inner bottom of the cable trench. The water groove is filled with a plug, and the plug is used to seal the water hole.

5. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: A cable support plate is provided in the first cable through hole, and the cable is placed on the cable support plate. The bottom of the cable support plate is placed on the bottom wall of the first cable through hole. The cross-section of the cable support plate is U-shaped along a plane parallel to the first fire-resistant partition.

6. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: The first fire-resistant partition includes two plates that are detachably connected to each other, and buckles that fit together and snap into place are respectively provided on the two plates. The first cable through hole is provided on at least one of the plates.

7. A fireproof structure suitable for cable laying as claimed in claim 6, characterized in that: After the first fireproof partition is fixedly connected to the cable trench, the two plates are arranged in an up-and-down manner, and the buckle is arranged near the joint of the two plates.

8. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: The first fireproof partition includes four plates that are detachably connected to each other, and buckles that fit together and snap into each other are respectively provided on the four plates. The four plates are arranged in a rectangular array.

9. A fireproof structure suitable for cable laying as claimed in claim 8, characterized in that: After the first fire-resistant partition is fixedly connected to the cable trench, grooves are provided at one end of the two plates located at the upper or lower part and close to each other, and the two grooves are connected and combined to form the first cable through-hole, and the buckle is provided near the joint of the four plates.

10. A fireproof structure suitable for cable laying as claimed in claim 1, characterized in that: A side surface of the first fireproof partition connected to the brick body and a side surface of the second fireproof partition connected to the power distribution cabinet are both provided with a fireproof coating, and the fireproof coating is suitable for being attached to a cable trench or a power distribution cabinet.

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