Flexible fireproof cable assembly
By designing and selecting flexible pressure-bearing isolation components, the problems of rigidity and large bending radius of fire-resistant cables have been solved, enabling flexible laying in narrow and complex scenarios and improving the applicability of the cables.
Patent Information
- Application Number
- CN202520823571.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing fire-resistant cables, due to their rigidity and large bending radius, are difficult to adapt to narrow or complex installation spaces, thus limiting their application range.
The cable employs a flexible pressure-bearing isolation component design, including an inner pressure-bearing isolation layer, a pressure-bearing isolation wall, and an outer pressure-bearing isolation layer. Through spiral distribution and material selection, the cable's flexibility and bending performance are improved. Combined with the material selection of the inner and outer sheaths, structural stability is ensured.
It significantly improves the flexibility of fire-resistant cables, reduces the bending radius, and makes them suitable for narrow and complex installation scenarios, thus enhancing their applicability.
Smart Images
Figure CN223842667U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fire-resistant cable technology, and more particularly to a flexible fire-resistant cable assembly. Background Technology
[0002] Fire-resistant cables play a crucial role in applications with high safety requirements. Their core function is to maintain the integrity of the wiring in fire-resistant environments, thereby ensuring the reliability of power and signal transmission.
[0003] However, existing fire-resistant cables have significant limitations in practical applications. Due to their structural design characteristics, existing fire-resistant cables typically have high rigidity and a large bending radius, making them difficult to adapt to confined or complex installation spaces. In modern buildings and industrial facilities, an increasing number of scenarios require cables to be flexibly laid within limited spaces, and these characteristics of existing fire-resistant cables greatly limit their application range.
[0004] Therefore, improving the flexibility of fire-resistant cables to make them suitable for installation in more confined and complex environments has become an urgent technical problem with significant practical implications. Utility Model Content
[0005] In view of this, in order to overcome the shortcomings of the prior art, this application aims to provide a flexible fireproof cable assembly.
[0006] This application provides a flexible fireproof cable assembly, including a fireproof cable core, an inner sheath, a flexible pressure-bearing isolator, and an outer sheath. The inner and outer sheaths are arranged sequentially from the inside to the outside of the fireproof cable core. A flexible pressure-bearing isolator is provided between the inner and outer sheaths, which can isolate the inner and outer sheaths and support the outer sheath.
[0007] Optionally, in the flexible fireproof cable assembly of this application, the flexible pressure-bearing isolation component includes an inner pressure-bearing isolation layer, a pressure-bearing isolation wall, and an outer pressure-bearing isolation layer. The inner pressure-bearing isolation layer extends axially in a spiral shape, and the outer pressure-bearing isolation layer extends axially in a spiral shape on the outside of the inner pressure-bearing isolation layer. One end of the spirally distributed pressure-bearing isolation wall is integrally connected to the inner pressure-bearing isolation layer, and the other end of the pressure-bearing isolation wall is integrally connected to the outer pressure-bearing isolation layer.
[0008] Optionally, in the flexible fireproof cable assembly of this application, the inner pressure-bearing isolation layer, the pressure-bearing isolation wall, and the outer pressure-bearing isolation layer have the same pitch, starting angle, and number of spiral turns.
[0009] Optionally, in the flexible fireproof cable assembly of this application, a plurality of flexible deformation grooves are provided on the circumference of the inner pressure-bearing isolation layer, and the flexible deformation grooves are parallel to the central axis of the flexible pressure-bearing isolation component.
[0010] Optionally, in the flexible fireproof cable assembly of this application, the inner pressure-bearing isolation layer is spirally distributed on the outside of the inner sheath.
[0011] Optionally, in the flexible fireproof cable assembly of this application, the outer pressure-bearing isolation layer is spirally distributed on the inner side of the outer sheath.
[0012] Optionally, in the flexible fireproof cable assembly of this application, the flexible pressure-bearing isolation component is made of silicone rubber or low-smoke halogen-free flame-retardant polyolefin material.
[0013] Optionally, in the flexible fireproof cable assembly of this application, the inner sheath and outer sheath are made of silicone rubber or low-smoke halogen-free flame-retardant polyolefin.
[0014] Optionally, in the flexible fireproof cable assembly of this application, the fireproof cable core includes a conductor and a first fireproof insulation layer and a second fireproof insulation layer that are sequentially wrapped around the outside of the conductor from the inside out.
[0015] Optionally, in the flexible fireproof cable assembly of this application, the conductor of the fireproof cable core is made of annealed copper or annealed aluminum alloy, the first fireproof insulation layer is made of inorganic mineral insulation tape wrapped in layers, and the second fireproof insulation layer is made of alkali-free glass fiber tape wrapped in layers.
[0016] The flexible fire-resistant cable assembly of this application, through comprehensive structural design and material selection, significantly improves the flexibility of the fire-resistant cable while ensuring the overall structural stability of the fire-resistant cable, reduces the bending radius of the fire-resistant cable, and makes it suitable for more confined and complex installation scenarios, thereby improving the scenario applicability of the fire-resistant cable. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a structural example diagram of a flexible fire-resistant cable assembly according to an embodiment of this application;
[0019] Figure 2 This is a structural example diagram of a flexible pressure-bearing isolation component according to an embodiment of this application;
[0020] Figure 3 This is a partial structural example of a flexible pressure-bearing isolation member according to an embodiment of this application;
[0021] Figure 4 This is a partial structural example diagram of a flexible fire-resistant cable assembly according to an embodiment of this application;
[0022] Figure 5 This is a structural example diagram of the fire-resistant cable core of a flexible fire-resistant cable assembly according to an embodiment of this application;
[0023] In the diagram, 1-fireproof cable core, 2-inner sheath, 3-flexible pressure-bearing isolation component, 4-outer sheath, 11-conductor, 12-first fireproof insulation layer, 13-second fireproof insulation layer, 31-inner pressure-bearing isolation layer, 32-pressure-bearing isolation wall, 33-outer pressure-bearing isolation layer, 34-flexible deformation groove. Detailed Implementation
[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0025] It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other; and, based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0026] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0027] Figure 1 This is a structural example diagram of a flexible fire-resistant cable assembly according to an embodiment of this application, as shown below. Figure 1 As shown, the flexible fireproof cable assembly in this embodiment includes a fireproof cable core 1, an inner sheath 2, a flexible pressure-bearing isolation member 3, and an outer sheath 4. The inner sheath 2 and the outer sheath 4 are arranged sequentially from the inside to the outside of the fireproof cable core 1. The flexible pressure-bearing isolation member 3 is arranged between the inner sheath 2 and the outer sheath 4. The flexible pressure-bearing isolation member 3 can isolate the inner sheath 2 and the outer sheath 4 and support the outer sheath 4.
[0028] Figure 2 This is a structural example diagram of a flexible pressure-bearing isolation component according to an embodiment of this application. Figure 3 This is a partial structural example diagram of a flexible pressure-bearing isolation member according to an embodiment of this application, as shown below. Figure 1 , Figure 2 and Figure 3As shown, as an optional example, in this embodiment, the flexible pressure-bearing isolation member 3 includes an inner pressure-bearing isolation layer 31, a pressure-bearing isolation wall 32, and an outer pressure-bearing isolation layer 33. The inner pressure-bearing isolation layer 31 extends axially in a spiral shape, and the outer pressure-bearing isolation layer 33 extends axially in a spiral shape on the outside of the inner pressure-bearing isolation layer 31. One end of the spirally distributed pressure-bearing isolation wall 32 is integrally connected to the inner pressure-bearing isolation layer 31, and the other end of the pressure-bearing isolation wall 32 is integrally connected to the outer pressure-bearing isolation layer 33.
[0029] As an optional example, in this embodiment, the inner pressure-bearing isolation layer 31, the pressure-bearing isolation wall 32, and the outer pressure-bearing isolation layer 33 have the same pitch, starting angle, and number of spiral turns. In this embodiment, multiple flexible deformation grooves 34 are provided on the circumference of the inner pressure-bearing isolation layer 31, and the flexible deformation grooves 34 are parallel to the central axis of the flexible pressure-bearing isolation component 3.
[0030] Figure 4 This is a partial structural example diagram of a flexible fire-resistant cable assembly according to an embodiment of this application, as shown below. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the inner pressure-bearing isolation layer 31 is spirally distributed on the outer side of the inner protective layer 2. This spiral distribution increases the contact support threads between the inner pressure-bearing isolation layer 31 and the inner protective layer 2, and also increases the flexibility of the inner pressure-bearing isolation layer 31 during bending deformation. The flexible deformation groove 34 further increases the deformation space of the inner pressure-bearing isolation layer 31, thus ensuring efficient and uniform support while further increasing the flexibility of the inner pressure-bearing isolation layer 31. The outer pressure-bearing isolation layer 33 is spirally distributed on the inner side of the outer protective layer 4. This spiral distribution increases the contact support threads between the outer pressure-bearing isolation layer 33 and the outer protective layer 4, and also increases the flexibility of the outer pressure-bearing isolation layer 33 during bending deformation.
[0031] In this embodiment, the flexible pressure-bearing isolation component 3 can be made of silicone rubber, low-smoke halogen-free flame-retardant polyolefin, or other materials with excellent temperature resistance and mechanical and physical properties. When implementing the flexible fireproof cable assembly of this application, those skilled in the art can also select other materials to prepare the flexible pressure-bearing isolation component 3 according to the application scenario, and this application does not limit this.
[0032] In this embodiment, the inner sheath 2 and the outer sheath 4 are made of silicone rubber or low-smoke halogen-free flame-retardant polyolefin material or other materials with excellent temperature resistance and mechanical and physical properties. When implementing the flexible fireproof cable assembly of this application, those skilled in the art can also select other materials to prepare the inner sheath 2 and the outer sheath 4 according to the application scenario, and this application does not limit this.
[0033] In practical applications, the inner protective layer 2 and the outer protective layer 4 in this application are made of the same or different materials.
[0034] Figure 5 This is a structural example diagram of the fire-resistant cable core of a flexible fire-resistant cable assembly according to an embodiment of this application, as shown below. Figures 1 to 5 As shown, in this embodiment, the fireproof cable core 1 includes a conductor 11 and a first fireproof insulation layer 12 and a second fireproof insulation layer 13 sequentially covering the outside of the conductor 11 from the inside out. In practical applications, in this embodiment, the conductor 11 of the fireproof cable core 1 is made of a metal material with a high melting point, high conductivity, and stable mechanical and physical properties, such as annealed copper or annealed aluminum alloy. For example, when the conductor 11 is made of annealed copper or annealed aluminum alloy, the corresponding material is prepared as a single wire, and the single wire is twisted together to prepare a conductor 11 with an overall circular cross-section.
[0035] In this embodiment, the first fire-resistant insulation layer 12 is made by overlapping and wrapping inorganic mineral insulating tape, such as by overlapping and wrapping non-combustible mica tape. The second fire-resistant insulation layer 13 is made by overlapping and wrapping alkali-free glass fiber tape. In practical applications, the first fire-resistant insulation layer 12 can provide stable electrical insulation protection for the conductor 11 at both room temperature and high temperature. The second fire-resistant insulation layer 13 further protects both the conductor 11 and the first fire-resistant insulation layer 12, providing insulation protection for the conductor 11 while preventing external components from damaging the surface of the first insulation layer 12.
[0036] The flexible fire-resistant cable assembly in this embodiment, through comprehensive structural design and material selection, significantly improves the flexibility of the fire-resistant cable while ensuring the overall structural stability of the fire-resistant cable, reduces the bending radius of the fire-resistant cable, and makes it suitable for more confined and complex installation scenarios, thereby improving the scenario applicability of the fire-resistant cable.
[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A flexible fire-resistant cable assembly, characterized in that, The flexible fireproof cable assembly includes a fireproof cable core, an inner sheath, a flexible pressure-bearing isolator, and an outer sheath. The inner and outer sheaths are arranged sequentially from the inside to the outside of the fireproof cable core. A flexible pressure-bearing isolator is provided between the inner and outer sheaths, which can isolate the inner and outer sheaths and support the outer sheath.
2. The flexible fire-resistant cable assembly according to claim 1, characterized in that, The flexible pressure-bearing isolation component includes an inner pressure-bearing isolation layer, a pressure-bearing isolation wall, and an outer pressure-bearing isolation layer. The inner pressure-bearing isolation layer extends axially in a spiral shape, and the outer pressure-bearing isolation layer extends axially in a spiral shape on the outside of the inner pressure-bearing isolation layer. One end of the spirally distributed pressure-bearing isolation wall is integrally connected to the inner pressure-bearing isolation layer, and the other end of the pressure-bearing isolation wall is integrally connected to the outer pressure-bearing isolation layer.
3. The flexible fire-resistant cable assembly according to claim 2, characterized in that, The inner pressure-bearing isolation layer, the pressure-bearing isolation wall, and the outer pressure-bearing isolation layer have the same pitch, starting angle, and number of helical turns.
4. The flexible fire-resistant cable assembly according to claim 3, characterized in that, Multiple flexible deformation grooves are arranged around the circumference of the inner pressure-bearing isolation layer, and the flexible deformation grooves are parallel to the central axis of the flexible pressure-bearing isolation component.
5. The flexible fire-resistant cable assembly according to claim 4, characterized in that, The inner pressure-bearing isolation layer is spirally distributed on the outside of the inner protective layer.
6. The flexible fire-resistant cable assembly according to claim 5, characterized in that, The external pressure-bearing isolation layer is spirally distributed on the inner side of the outer protective layer.
7. The flexible fire-resistant cable assembly according to claim 1, characterized in that, The flexible pressure-bearing isolation component is made of silicone rubber or low-smoke halogen-free flame-retardant polyolefin material.
8. The flexible fire-resistant cable assembly according to claim 1, characterized in that, The inner and outer protective layers are made of silicone rubber or low-smoke halogen-free flame-retardant polyolefin.
9. The flexible fire-resistant cable assembly according to claim 1, characterized in that, The fireproof cable core includes a conductor and a first fireproof insulation layer and a second fireproof insulation layer that are sequentially wrapped around the outside of the conductor from the inside out.
10. The flexible fire-resistant cable assembly according to claim 1, characterized in that, The conductor of the fireproof cable core is made of annealed copper or annealed aluminum alloy. The first fireproof insulation layer is made of inorganic mineral insulation tape wrapped in layers, and the second fireproof insulation layer is made of alkali-free glass fiber tape wrapped in layers.