Fireproof flame-retardant protection bridge suitable for cable

Abstract

The utility model discloses a fireproof flame-retardant protection bridge suitable for a cable, and relates to the technical field of cable protection, the fireproof flame-retardant protection bridge comprises a substrate and a protection frame in sliding connection with the substrate, the protection frame is used for installing and placing the cable, the outer side wall of the substrate is provided with a fireproof cover plate, and the fireproof cover plate is provided with a plurality of rib strips along the length direction. A heat dissipation groove is formed between every two adjacent protruding rib strips, a self-cleaning coating is arranged on the outer side wall of the fireproof cover plate, a flame-retardant layer is arranged on the inner side wall of the protection frame, and a heat insulation layer is arranged on the inner side wall of the protection frame and attached to the flame-retardant layer. The fireproof cover plate is beneficial to obstructing external flames and heat when a fire disaster occurs and reducing the rising speed of the internal temperature of the bridge; a flame-retardant layer is arranged on the inner side wall of the protection frame, when fire spreads into the bridge, the flame-retardant layer forms a heat insulation carbon layer through expansion foaming, and the cable is further protected against flame and high temperature attack; the cooperation of the two significantly improves the overall fireproof performance of the bridge.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cable protection, in particular to a fireproof and flame-retardant protection bridge suitable for cables. BACKGROUND

[0002] In modern power transmission systems, cable bridges, as important carriers for cable laying, are widely used in many fields such as construction, industry and transportation. They not only orderly support and protect cables, but also play a certain protective role for cables, ensuring the stability and safety of power transmission.

[0003] At present, common cable bridges are mainly made of metal materials, such as steel bridges and aluminum alloy bridges. These traditional cable bridges have the advantages of simple structure and strong bearing capacity, and to some extent meet the needs of cable laying and management. Steel bridges are widely used in general environment cable laying due to their high strength and good corrosion resistance.

[0004] According to the related technology in the above, the inventors believe that the traditional cable bridge made of metal material itself does not have fireproof performance, and it is difficult to protect the cable when a fire occurs. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide a fireproof and flame-retardant protection bridge suitable for cables to improve the problem that the traditional cable bridge made of metal material itself does not have fireproof performance and it is difficult to protect the cable when a fire occurs.

[0006] The application provides a fireproof and flame-retardant protection bridge suitable for cables, which adopts the following technical scheme:

[0007] A fireproof and flame-retardant protection bridge suitable for cables comprises a base plate and a protection frame in sliding connection with the base plate, the protection frame is used for installing and placing cables, the outer side wall of the base plate is provided with a fireproof cover plate, and the inner side wall of the protection frame is provided with a flame-retardant layer.

[0008] By adopting the above technical scheme, the fireproof cover plate helps to block the external flame and heat when a fire occurs, reducing the temperature rising speed inside the bridge; the flame-retardant layer is arranged on the inner side wall of the protection frame, and when the fire spreads to the inside of the bridge, the flame-retardant layer forms a heat insulation carbon layer by expanding and foaming, further protecting the cables from the invasion of flame and high temperature; the two cooperate to significantly improve the overall fireproof performance of the bridge.

[0009] Optionally, the fireproof cover plate is provided with a plurality of convex rib strips along the length direction thereof, and heat dissipation grooves are formed between adjacent convex rib strips.

[0010] By adopting the above technical scheme, the convex rib and the heat dissipation groove on the fireproof cover plate increase the surface area thereof, according to the heat transfer principle, the larger surface area can accelerate the heat exchange rate with air, when the cable generates heat during normal operation, air can flow in the heat dissipation groove to take away the heat on the surface of the fireproof cover plate, reducing the risk of fire caused by overheating of the cable, and helping to achieve the effects of fire prevention and heat dissipation.

[0011] Optionally, the outer side wall of the fireproof cover plate is provided with a self-cleaning coating.

[0012] By adopting the above technical scheme, the self-cleaning coating utilizes the super-amphiphobic property to make dust, oil stains and other impurities difficult to adhere, if the impurities accumulate on the surface of the fireproof cover plate, it will hinder heat dissipation, affect the heat dissipation and fireproof effect of the fireproof cover plate, the self-cleaning coating helps to keep the fireproof cover plate clean, maintain its efficient heat dissipation and stable fireproof performance, and reduce the cost and frequency of manual cleaning and maintenance.

[0013] Optionally, the inner side wall of the protection frame is provided with a mounting groove for clamping installation of the flame-retardant layer.

[0014] By adopting the above technical scheme, the flame-retardant layer is fixed by clamping, ensuring the connection strength and stability of the flame-retardant layer and the protection frame, and the flame-retardant layer can be replaced to maintain the flame-retardant effect of the flame-retardant layer.

[0015] Optionally, the flame-retardant layer is uniformly distributed with phase change material particles, and the phase change material particles absorb heat when phase changing at high temperature.

[0016] By adopting the above technical scheme, when the cable causes local temperature to rise suddenly due to failure or fire, the phase change material particles quickly absorb heat, delay the temperature rising speed, provide additional heat buffer for the cable, and prolong the safe operation time of the cable in high temperature environment.

[0017] Optionally, the inner side wall of the protection frame is provided with a heat insulation layer in contact with the flame-retardant layer.

[0018] By adopting the above technical scheme, the heat insulation layer weakens the conduction of heat from the outside of the protection frame to the cable, further reduces the degree of influence of high temperature on the cable, and provides more reliable protection for the cable.

[0019] Optionally, the substrate is provided with a plurality of cooling holes for ventilation and cooling along the length direction thereof, and the protection frame is provided with a plurality of communication holes in communication with the cooling holes.

[0020] By adopting the above technical scheme, the cooling holes and the communication holes on the substrate constitute a ventilation cooling channel, based on the principle of air convection, external cold air enters from the cooling holes, flows through the communication holes and contacts the cable, and carries away the heat generated by the operation of the cable, and the hot air is discharged again, and the continuous air circulation can effectively control the internal temperature of the bridge, which helps to reduce the possibility of accelerated aging or fire caused by high temperature of the cable.

[0021] Optionally, the plurality of communication holes are uniformly arranged.

[0022] By adopting the above technical scheme, the uniform flow of air in the protection frame is ensured, and heat accumulation caused by poor local air circulation is reduced.

[0023] In summary, the present application includes at least one of the following beneficial technical effects of the fireproof and flame-retardant protection bridge for cables:

[0024] 1. The fireproof cover plate helps to block external flames and heat, and reduces the internal temperature rising speed of the bridge; the flame-retardant layer on the inner side wall of the protection frame expands and foams to form a heat-insulating carbon layer when the fire spreads to the inside of the bridge, further protecting the cable from flame and high temperature invasion; the combination of the two significantly improves the overall fireproof performance of the bridge;

[0025] 2. The convex rib and the heat dissipation groove on the fireproof cover plate increase its surface area, according to the principle of heat transfer, a larger surface area can accelerate the heat exchange rate with air, when the cable generates heat during normal operation, air can flow in the heat dissipation groove to carry away the heat on the surface of the fireproof cover plate, reducing the risk of fire caused by overheating of the cable, and helping to achieve the functions of fireproofing and heat dissipation;

[0026] 3. The cooling holes and the communication holes on the substrate constitute a ventilation cooling channel, based on the principle of air convection, external cold air enters from the cooling holes, flows through the communication holes and contacts the cable, and carries away the heat generated by the operation of the cable, and the hot air is discharged again, and the continuous air circulation can effectively control the internal temperature of the bridge, which helps to reduce the possibility of accelerated aging or fire caused by high temperature of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the fireproof and flame-retardant protection bridge for cables.

[0028] In the figure, 1 is a substrate, 2 is a protection frame, 21 is a mounting groove, 3 is a fireproof cover plate, 31 is a convex rib, 32 is a heat dissipation groove, 4 is a flame-retardant layer, 41 is a phase change material particle, 5 is a self-cleaning coating, 6 is a heat insulation layer, 7 is a cooling hole, and 71 is a communication hole. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figure 1 The present application will be further described in detail.

[0030] A fireproof flame-retardant protection bridge suitable for cables, referring to Figure 1 , including the base plate 1 and the protection frame 2 slidingly connected with the base plate 1, the protection frame 2 is used for installing the cable. Specifically, the base plate 1 is provided with two parallel sliding grooves along the length direction thereof, the bottom of the protection frame 2 is provided with sliding blocks matched with the sliding grooves at the positions corresponding to the sliding grooves, the sliding connection of the protection frame 2 on the base plate 1 is realized through the cooperation of the sliding grooves and the sliding blocks, which facilitates the installation and maintenance of the cable.

[0031] Referring to Figure 1 , the outer side wall of the base plate 1 is fixedly connected with the fireproof cover plate 3 through screws, the fireproof cover plate 3 is a frame plate structure woven by high-strength ceramic fiber, which has good high-temperature resistance and fireproof performance. The side wall of the fireproof cover plate 3 is integrally formed with a plurality of convex rib strips 31 along the length direction thereof, the number of the convex rib strips 31 is not specifically limited, and the adjacent convex rib strips 31 form heat dissipation grooves 32, the design of the convex rib strips 31 and the heat dissipation grooves 32 can increase the surface area of the fireproof cover plate 3, thereby improving the heat dissipation efficiency.

[0032] Referring to Figure 1 , the outer side wall of the fireproof cover plate 3 is coated with a self-cleaning coating 5, such as fluorocarbon polymer, by a spraying process, which can make dust and debris difficult to adhere.

[0033] Referring to Figure 1 , the inner side wall of the protection frame 2 is fixedly provided with a flame-retardant layer 4 by clamping and bonding, the flame-retardant layer 4 is a coating structure formed by curing of intumescent flame-retardant paint, which includes a charring agent, generally a high-carbon-containing polyhydroxy compound such as pentaerythritol and its derivatives, etc.; an acid source, mainly some phosphorus-containing compounds such as ammonium polyphosphate, etc.; a gas source: usually melamine, dicyandiamide and other nitrogen-containing compounds; a base material: generally synthetic resins such as acrylic resin, epoxy resin, etc.; additives: including fillers, dispersants, stabilizers, etc., prepared in a certain proportion.

[0034] Referring to Figure 1 , the flame-retardant layer 4 is uniformly provided with phase change material particles 41, which can be hydrated salts such as sodium acetate trihydrate, which will undergo phase change to absorb heat at high temperature, thereby reducing the temperature inside the protection frame 2.

[0035] Referring to Figure 1 , the inner side wall of the protection frame 2 is provided with a mounting groove 21 for clamping and mounting the flame-retardant layer 4, the size of the mounting groove 21 is matched with that of the flame-retardant layer 4, which can stably fix the flame-retardant layer 4 to the inner side wall of the protection frame 2. The inner side wall of the protection frame 2 is provided with a heat insulation layer 6 by bonding the flame-retardant layer 4, the heat insulation layer 6 is made of aerogel felt material, which has excellent heat insulation performance.

[0036] Referring to Figure 1The substrate 1 is provided with a plurality of cooling holes 7 for ventilation cooling along the length direction thereof, and the protection frame 2 is provided with a plurality of communication holes 71 in communication with the cooling holes 7, and the plurality of communication holes 71 are uniformly arranged, and the number of the cooling holes 7 and the communication holes 71 is not specifically limited in the embodiment. The design of the cooling holes 7 and the communication holes 71 can enable the outside air to enter the protection frame 2 and exchange heat with the heat generated by the cable, and the heat is taken away by the flow of air to realize the cooling of the cable. The both ends of the cooling holes 7 are in abutment with the wall surface, and the air is ventilated through the wall surface opening.

[0037] The implementation principle of the embodiment of the present application is:

[0038] In actual use, when a fire occurs, the fireproof cover plate 3 blocks the flame, the acid source, the carbonization agent and the gas source in the flame-retardant layer 4 react to form an expanded carbon layer, the phase change material particles 41 absorb heat and cool down, and the double effects isolate the flame and heat; the aerogel felt of the heat insulation layer 6 reduces the external heat conduction, and the cooling holes 7 and the communication holes 71 of the substrate 1 realize air circulation and heat dissipation; the self-cleaning coating 5 helps the dirt to adhere, and ensures the stable performance of the fireproof cover plate 3; and the sliding connection structure of the protection frame 2 and the substrate 1 is convenient for cable installation and maintenance; helps to protect the cable and improve the fire resistance of the bridge.

[0039] The embodiments of the present application are preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A fire-resistant and flame-retardant cable tray suitable for cables, comprising a base plate (1) and a protective frame (2) slidably connected to the base plate (1), the protective frame (2) being used to install and place cables, characterized in that: The outer side wall of the substrate (1) is provided with a fireproof cover plate (3), and the inner side wall of the protective frame (2) is provided with a flame-retardant layer (4).

2. The fire-resistant and flame-retardant cable tray suitable for cables according to claim 1, characterized in that: The fireproof cover (3) has a plurality of protruding ribs (31) along its length, and heat dissipation grooves (32) are formed between adjacent protruding ribs (31).

3. A fire-resistant and flame-retardant cable tray suitable for cables according to claim 2, characterized in that: The fireproof cover (3) has a self-cleaning coating (5) on its outer side wall.

4. A fire-resistant and flame-retardant cable tray suitable for cables according to claim 1, characterized in that: The inner wall of the protective frame (2) is provided with an installation groove (21) for the flame retardant layer (4) to be engaged and installed.

5. A fire-resistant and flame-retardant cable tray suitable for cables according to claim 4, characterized in that: The flame-retardant layer (4) is uniformly provided with phase change material particles (41), which absorb heat by undergoing phase change at high temperature.

6. A fire-resistant and flame-retardant cable tray suitable for cables according to claim 5, characterized in that: The inner wall of the protective frame (2) is fitted with a flame-retardant layer (4) and a heat insulation layer (6).

7. A fire-resistant and flame-retardant cable tray suitable for cables according to claim 1, characterized in that: The substrate (1) has a plurality of cooling holes (7) for ventilation and cooling along its length, and the protective frame (2) has a plurality of connecting holes (71) connected to the cooling holes (7).

8. A fire-resistant and flame-retardant cable tray suitable for cables according to claim 7, characterized in that: Several of the aforementioned connecting holes (71) are evenly arranged.

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