A ceramicized fire resistant cable

Abstract

This utility model belongs to the field of fire-resistant cable technology, and in particular to a ceramicized fire-resistant cable, comprising a conductor composed of six stranded cores, each core being composed of seven highly conductive copper or aluminum wires stranded together. An aerogel heat-insulating buffer layer is provided on the outer layer of the conductor, and a filling layer is provided between the conductor and the aerogel heat-insulating buffer layer. A nanocomposite material shielding layer is provided on the outer layer of the aerogel heat-insulating buffer layer. This utility model ensures efficient power transmission through a multi-stranded conductor; the filling layer enhances mechanical strength, extends service life, and assists in fire resistance; the aerogel heat-insulating buffer layer provides fire and heat insulation and buffers external forces; the nanocomposite material shielding layer shields electromagnetic interference and enhances fire resistance; the fire-resistant protective layer and the wrapping layer work together for fire protection; the self-healing microcapsule repair layer automatically repairs damage; and the rubber outer sheath protects against mechanical, chemical, and water erosion. The synergistic effect of these structural layers ensures the safe and stable operation of the cable in complex environments.

Description

Technical Field

[0001] This utility model relates to the field of fireproof cable technology, specifically to a ceramicized fireproof cable. Background Technology

[0002] In today's society, the stability and safety of power supply are crucial in all sectors, from high-rise buildings and large commercial complexes to rail transit and industrial production facilities. With the increasing frequency of fires, traditional cables have revealed numerous fatal flaws in fire scenarios, prompting the research and development of ceramic fire-resistant cables.

[0003] Traditional cables typically use ordinary insulation and sheathing materials, such as polyvinyl chloride (PVC). In the event of a fire, these materials are not only flammable themselves, but also release large amounts of dense smoke and toxic gases, such as hydrogen chloride, during combustion. This severely hinders evacuation and rescue efforts at the fire scene, seriously threatening lives. Furthermore, the insulation layer of ordinary cables ages and melts rapidly at high temperatures, exposing the conductor and making it highly susceptible to short circuits. This further exacerbates the fire hazard and may even cause a complete power system failure, depriving critical electrical facilities such as emergency lighting and fire-fighting equipment of power, significantly reducing the building's survivability in a fire.

[0004] In contrast, ceramicized fire-resistant cables emerged to address the fire resistance challenges of traditional cables. While early fire-resistant cables saw some improvements, such as the use of fire-resistant materials like mica tape for wrapping, mica tape is brittle and easily damaged during cable installation and bending, affecting its fire resistance. Furthermore, with technological advancements and increasingly demanding environmental requirements for cables, basic fire resistance alone is no longer sufficient.

[0005] In environments with stringent electromagnetic requirements, such as precision medical equipment areas in hospitals and data centers, the electromagnetic shielding performance of cables is crucial. Insufficient resistance to external electromagnetic interference or leakage of electromagnetic signals from the cable itself can interfere with normal equipment operation, leading to data errors and equipment malfunctions. In industrial production environments, cables frequently face multiple challenges, including mechanical impact, abrasion, and chemical corrosion, requiring stronger mechanical protection and resistance to chemical corrosion.

[0006] Furthermore, cables inevitably suffer minor damage over long-term use due to various reasons. If not repaired in time, this damage will gradually expand, ultimately affecting the cable's lifespan and performance. Based on these numerous practical challenges, structural innovation in ceramicized fire-resistant cables, introducing novel structural layers such as aerogel thermal insulation buffer layers, nanocomposite material shielding layers, and self-healing microcapsule repair layers, has become an inevitable trend to improve the overall performance of cables and adapt to complex and ever-changing application scenarios. Summary of the Invention

[0007] Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this utility model provides a ceramicized fireproof cable, which solves the problems mentioned in the background section.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0011] A ceramicized fire-resistant cable includes a conductor composed of six stranded cores, each core consisting of seven highly conductive copper or aluminum wires. An aerogel heat-insulating buffer layer is disposed on the outer layer of the conductor. A filling layer is provided between the conductor and the aerogel heat-insulating buffer layer. A nanocomposite material shielding layer is disposed on the outer layer of the aerogel heat-insulating buffer layer. A fire-resistant protective layer is disposed on the outer layer of the nanocomposite material shielding layer. A wrapping layer is disposed on the outer layer of the fire-resistant protective layer. A self-healing microcapsule repair layer is disposed on the outer layer of the wrapping layer. A rubber outer sheath is disposed on the outer layer of the self-healing microcapsule repair layer.

[0012] Furthermore, the aerogel thermal insulation buffer layer is a buffer layer composed of aerogel material and flexible fiber material.

[0013] Furthermore, the filling layer is one of ceramicized fireproof and refractory filling rope, rock wool rope, or high flame-retardant polypropylene tear mesh filling rope, used to fill the internal gaps of the cable and enhance its mechanical strength and aging resistance.

[0014] Furthermore, the nanocomposite shielding layer is a structural layer composed of nano-silver and nano-copper conductive nanomaterials and a polymer matrix, which can shield electromagnetic interference and enhance fire resistance.

[0015] Furthermore, the fire-resistant protective layer is a structural layer composed of extruded ceramicized silicone rubber.

[0016] Furthermore, the wrapping layer is a structural layer composed of overlapping ceramic composite tapes.

[0017] Furthermore, the self-healing microcapsule repair layer is a structural layer made of polymer materials, in which a resin repair agent is encapsulated inside a microcapsule.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a ceramicized fireproof cable, which has the following beneficial effects:

[0020] This invention utilizes a multi-stranded conductor to ensure efficient power transmission, a filler layer to enhance mechanical strength, extend service life, and provide fire protection, an aerogel heat insulation buffer layer to provide fire and heat insulation and buffer external forces, a nanocomposite material shielding layer to shield electromagnetic interference and enhance fire resistance, a fire-resistant protective layer and a wrapping layer to work together for fire protection, a self-healing microcapsule repair layer to automatically repair damage, and a rubber outer sheath to protect against mechanical, chemical, and water erosion. All structural layers work together to ensure the cable operates safely and stably in complex environments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a side view of the present invention.

[0023] In the diagram: 1. Conductor core; 2. Filler layer; 3. Aerogel thermal insulation buffer layer; 4. Nanocomposite material shielding layer; 5. Fire-resistant protective layer; 6. Wrapping layer; 7. Self-healing microcapsule repair layer; 8. Rubber outer sheath. Detailed Implementation

[0024] 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.

[0025] Example

[0026] like Figure 1-2 As shown, an embodiment of this utility model provides a ceramicized fireproof cable, which includes a conductor;

[0027] The core of the cable is the conductor, which is made up of six sets of conductor cores 1 carefully twisted together. Each set of conductor cores 1 is made up of seven highly conductive copper or aluminum wires tightly twisted together. This multi-wire twisted design not only gives the conductor excellent flexibility, making it easy to lay and install in various complex environments, but also the highly conductive copper or aluminum wires can effectively reduce resistance, reduce energy loss during transmission, and ensure stable and efficient power delivery.

[0028] The outer layer of the conductor is provided with an aerogel heat insulation buffer layer 3;

[0029] The aerogel thermal insulation buffer layer 3 is a major highlight of the cable, composed of aerogel and flexible fiber materials. Aerogel has extremely low thermal conductivity, acting like a robust "thermal barrier" to effectively block external heat from being conducted into the cable. In fire or high-temperature environments, it can delay the heating time of the internal structure, enhancing the cable's fire resistance and thermal insulation performance. The flexible fiber material provides the buffer layer with excellent flexibility and elasticity. When the cable is subjected to external impact or compression, the aerogel thermal insulation buffer layer 3 acts like a "spring," protecting the internal conductors, insulation layers, and other important structures from damage.

[0030] The filling layer 2 between the conductor and the aerogel insulation buffer layer 3 is made of one of the following: ceramicized fire-resistant and fire-resistant filling rope, rock wool rope, or high flame-retardant polypropylene tear-mesh filling rope. It acts as a "stabilizer" for the cable, not only filling the gaps inside the cable to make the overall structure more compact and stable, but also enhancing the cable's mechanical strength, making it less susceptible to damage when subjected to tensile, bending, and other external forces. Simultaneously, the filling layer 2 possesses excellent aging resistance, significantly extending the cable's service life. Furthermore, the inherent fire-resistant properties of materials such as ceramicized fire-resistant and fire-resistant filling rope and rock wool rope add another layer of protection to the cable's fire resistance.

[0031] The outer layer of the aerogel heat insulation buffer layer 3 is provided with a nanocomposite material shielding layer 4;

[0032] The nanocomposite shielding layer 4 is composed of conductive nanomaterials such as nano-silver and nano-copper combined with a polymer matrix. Nano-silver and nano-copper possess excellent conductivity, acting like tiny "electromagnetic guardians" to effectively shield against external electromagnetic interference, ensuring uninterrupted signal transmission within the cable. Simultaneously, these nanomaterials also play a special role in fire protection, enhancing the cable's fire resistance. The polymer matrix provides support for the nanomaterials, giving the shielding layer both flexibility for easy processing and sufficient mechanical strength to withstand cable bending.

[0033] The outer layer of the nanocomposite material shielding layer 4 is provided with a fire-resistant protective layer 5. This fire-resistant protective layer 5 is composed of extruded ceramicized silicone rubber, which is a key line of defense against cable fire. At room temperature, ceramicized silicone rubber possesses the flexibility and insulation of ordinary silicone rubber, ensuring the cable's normal operation. However, in the event of a fire, under high temperatures, it rapidly sinters into a hard ceramic shell. This ceramic shell acts like a robust "armor," effectively blocking flames and high temperatures, protecting the cable's internal structure from direct flame erosion, and ensuring the cable can maintain normal operation for a period of time during a fire.

[0034] The outer layer of the fire-resistant protective layer 5 is provided with a wrapping layer 6; the wrapping layer 6 is formed by overlapping ceramic composite tapes, which further enhances the fire resistance of the cable. The overlapping wrapping method increases the number of fire protection layers, just like putting multiple layers of "fireproof clothing" on the cable. The ceramic composite tape can also form a ceramic structure with a certain strength at high temperatures, working together with the fire-resistant protective layer 5 to block flames and heat, thus ensuring the safe operation of the cable.

[0035] The outer layer of the wrapping layer 6 is provided with a self-healing microcapsule repair layer 7. The self-healing microcapsule repair layer 7 consists of microcapsules made of polymer material encapsulating a resin repair agent, acting as a "smart doctor" for the cable. When the cable suffers minor damage, such as small cracks or breaks, the microcapsules at the damaged area immediately rupture, releasing the internal resin repair agent. This resin repair agent rapidly solidifies in air or under specific conditions, automatically filling the damaged area and repairing the cable's minor defects. This self-healing function prevents further damage, extends the cable's service life, and greatly improves the reliability of cable operation.

[0036] The self-healing microcapsule repair layer 7 is surrounded by a rubber outer sheath 8; this outermost rubber sheath 8 provides comprehensive protection for the cable. The rubber material possesses excellent flexibility, abrasion resistance, and chemical corrosion resistance, acting like a robust "protective suit" for the cable. It effectively protects the cable's internal structure from external mechanical damage and prevents sharp objects from slicing it; simultaneously, it resists chemical corrosion, preventing damage from acids, alkalis, and other chemicals. Furthermore, the rubber outer sheath 8 also has a certain degree of water resistance, preventing moisture from penetrating the cable and affecting its performance and lifespan.

[0037] When this ceramicized fire-resistant cable is in operation, the conductor, composed of six stranded cores 1, transmits current. Core 1 consists of seven highly conductive copper or aluminum wires, ensuring excellent conductivity. The filler layer 2 fills the internal gaps of the cable, enhancing mechanical strength and aging resistance, and providing a stable internal environment for the conductor. The aerogel thermal insulation buffer layer 3, composed of aerogel and flexible fiber materials, effectively blocks external heat transfer, buffers external impacts, and protects the internal structure. The nanocomposite shielding layer 4, using nano-silver, nano-copper, and a polymer matrix, shields electromagnetic interference and enhances fire resistance, ensuring stable operation of the cable in complex electromagnetic environments and minimizing the impact of fire. The extruded ceramicized silicone rubber of the fire-resistant protection layer 5 forms a hard ceramic-like structure under high fire temperatures, preventing further penetration of flames and heat. The overlapping wrapping of the ceramicized composite tape in the wrapping layer 6 further strengthens the fire-resistant effect. The self-healing microcapsule repair layer 7 contains resin repair agents encapsulated within polymer microcapsules, which release and solidify when minor damage occurs in the cable, repairing the damaged areas and extending the cable's service life. The outermost rubber sheath provides mechanical protection and chemical corrosion resistance, protecting the cable from external environmental erosion. All structural layers work together to ensure the cable operates safely and stably in various complex environments.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ceramicized fire-resistant cable, comprising a conductor, characterized in that: The conductor is formed by twisting together six sets of conductor cores (1). Each conductor core (1) is formed by twisting together seven highly conductive copper or aluminum wires. An aerogel heat insulation buffer layer (3) is provided on the outer layer of the conductor. A filling layer (2) is provided between the conductor and the aerogel heat insulation buffer layer (3). A nanocomposite material shielding layer (4) is provided on the outer layer of the aerogel heat insulation buffer layer (3). A fire-resistant protective layer (5) is provided on the outer layer of the nanocomposite material shielding layer (4). A wrapping layer (6) is provided on the outer layer of the fire-resistant protective layer (5). A self-healing microcapsule repair layer (7) is provided on the outer layer of the wrapping layer (6). A rubber outer sheath (8) is provided on the outer layer of the self-healing microcapsule repair layer (7).

2. The ceramicized fireproof cable according to claim 1, characterized in that: The filling layer (2) is one of ceramic fireproof and fire-resistant filling rope, rock wool rope or high flame retardant polypropylene tear mesh filling rope, used to fill the internal gaps of the cable and enhance mechanical strength and aging resistance.

3. The ceramicized fireproof cable according to claim 1, characterized in that: The fire-resistant protective layer (5) is a structural layer made of extruded ceramicized silicone rubber.

4. The ceramicized fireproof cable according to claim 1, characterized in that: The wrapping layer (6) is a structural layer composed of overlapping ceramic composite tapes.

5. A ceramicized fireproof cable according to claim 1, characterized in that: The self-healing microcapsule repair layer (7) is a structural layer made of polymer materials, in which a resin repair agent is wrapped inside a microcapsule.

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