Stable fireproof cable assembly

Abstract

The utility model relates to the technical field of fireproof cables, and provides a stable fireproof cable assembly which comprises an outer stable sleeve, an inner stable sleeve and a fireproof cable core, the inner stable sleeve and the outer stable sleeve sequentially wrap the outer side of the fireproof cable core from inside to outside, and the inner stable sleeve and the outer stable sleeve are connected in a locking mode. According to the stable fireproof cable assembly, the external interference and damage resistance of the fireproof cable in a laying environment can be improved, the impact resistance, dragging resistance and vibration resistance of the fireproof cable are improved, the service safety performance of the fireproof cable is improved, and thus the line safety is improved.

Description

Technical Field

[0001] This application relates to the field of fire-resistant cable technology, and more particularly to a robust fire-resistant cable assembly. Background Technology

[0002] Fire-resistant cables, as a key electrical transmission component, are widely used in high-safety-level scenarios. Their core function is to maintain the integrity of the circuit in a fire-resistant environment, ensuring that power or signals can still be transmitted normally under extreme conditions such as fire, thereby protecting personnel safety and the normal operation of equipment.

[0003] In practical applications, fire-resistant cables often face complex laying environments, especially in critical sectors such as rail transportation, shipbuilding, mining, and wind power generation. In these scenarios, cables not only need to withstand fire-resistant challenges such as high temperatures and flames, but may also be affected by various mechanical stresses such as vibration, dragging, and impacts from external objects. These complex operating conditions pose a severe test to the overall structural stability of fire-resistant cables. Damage to the cable structure can lead to line interruptions, short circuits, or even the spread of fire, seriously affecting its service safety and reliability.

[0004] Therefore, developing methods to improve the structural stability of fire-resistant cables, enabling them to maintain structural integrity and fire resistance in complex environments, is of great significance for enhancing safety in related fields. Utility Model Content

[0005] In view of this, in order to overcome the shortcomings of the prior art, this application aims to provide a robust fire-resistant cable assembly.

[0006] This application provides a robust fireproof cable assembly, which includes an outer stabilizing sleeve, an inner stabilizing sleeve, and a fireproof cable core. The inner stabilizing sleeve and the outer stabilizing sleeve are sequentially wrapped around the outside of the fireproof cable core from the inside out, and the inner stabilizing sleeve and the outer stabilizing sleeve are locked together.

[0007] Optionally, in the robust fireproof cable assembly of this application, the outer stabilizing sleeve includes, from the inside out, an outer stabilizing tube, a plurality of connecting support walls circumferentially distributed on the outside of the outer stabilizing tube and integrally connected to the outer stabilizing tube, and a plurality of stabilizing walls that are one-to-one corresponding to the connecting support walls and integrally connected to them.

[0008] Optionally, in the robust fireproof cable assembly of this application, the outer stabilizing sleeve is in the shape of a hollow circular tube, and multiple locking grooves are provided on the inner wall of the outer stabilizing sleeve. The groove of the locking groove has a rectangular cross-section and is parallel to the axis of the outer stabilizing sleeve.

[0009] Optionally, in the robust fireproof cable assembly of this application, the connecting support wall is spirally distributed along the axis of the outer robust sleeve, the robust wall is spirally distributed along the axis of the outer robust sleeve, and the connecting support wall and the connecting robust wall are perpendicular to each other.

[0010] Optionally, in the robust fireproof cable assembly of this application, the cross-section of the connecting support wall is rectangular in the radial direction of the outer robust sleeve.

[0011] Optionally, in the robust fireproof cable assembly of this application, the cross-section of the robust wall in the radial direction of the outer robust sleeve is a curved shape that bends inward.

[0012] Optionally, in the robust fireproof cable assembly of this application, adjacent robust walls are separated by a first gap, and adjacent connecting support walls are separated by a second gap.

[0013] Optionally, in the robust fireproof cable assembly of this application, the inner stabilizing sleeve consists of an inner stabilizing sleeve body that is circular in shape and a plurality of locking protrusions that are circumferentially distributed on the outside of the inner stabilizing sleeve body and integrally connected to the inner stabilizing sleeve body. The locking protrusions match the locking groove.

[0014] Optionally, in the robust fire-resistant cable assembly of this application, the fire-resistant cable core consists of a conductor and a fire-resistant insulation layer and a fire-resistant protective layer sequentially covering the outside of the conductor.

[0015] Optionally, in the robust fireproof cable assembly of this application, the conductor is made of annealed copper wire stranded together, the fireproof insulation layer is made of inorganic mineral non-combustible mica tape wrapped laterally, and the fireproof protective layer is made of annealed copper tape longitudinally welded and then corrugated.

[0016] The robust fire-resistant cable assembly of this application, through comprehensive structural design, can improve the fire-resistant cable's resistance to external interference and damage in the laying environment, enhance its impact resistance, drag resistance, and vibration resistance, improve its service safety performance, and thus improve the safety of the line. 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 robust fire-resistant cable assembly according to an embodiment of this application;

[0019] Figure 2 This is a structural example diagram of the outer stabilizing sleeve according to an embodiment of this application;

[0020] Figure 3 This is a partial structural example of the outer stabilizing sleeve according to an embodiment of this application;

[0021] Figure 4 This is another partial structural example of the outer stabilizing sleeve according to an embodiment of this application;

[0022] Figure 5 This is a partial structural example of a robust fire-resistant cable assembly according to an embodiment of this application;

[0023] In the figure, 1-outer stabilizing sleeve, 2-inner stabilizing sleeve, 3-fireproof cable core, 11-outer stabilizing sleeve, 12-connecting support wall, 13-stabilizing wall, 14-locking groove, 15-first interval, 16-second interval, 21-inner stabilizing sleeve body, 22-locking protrusion, 31-conductor, 32-fireproof insulation layer, 33-fireproof protective layer. 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, in the absence of conflict, 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 robust fire-resistant cable assembly according to an embodiment of this application, as shown below. Figure 1 As shown, the robust fireproof cable assembly of this embodiment includes an outer stabilizing sleeve 1, an inner stabilizing sleeve 2, and a fireproof cable core 3. The inner stabilizing sleeve 2 and the outer stabilizing sleeve 1 are sequentially wrapped around the outside of the fireproof cable core 3 from the inside to the outside, and the inner stabilizing sleeve 2 and the outer stabilizing sleeve 1 are locked together.

[0028] Figure 2This is a structural example diagram of the outer stabilizing sleeve according to an embodiment of this application, as shown below. Figure 1 and Figure 2 As shown, in this embodiment, the outer stabilizing sleeve 1 includes, from the inside out, an outer stabilizing sleeve 11, a plurality of connecting support walls 12 circumferentially distributed on the outside of the outer stabilizing sleeve 11 and integrally connected to the outer stabilizing sleeve 11, and a plurality of stabilizing walls 13 corresponding to and integrally connected to the connecting support walls 12.

[0029] Figure 3 This is a partial structural example of the outer stabilizing sleeve according to an embodiment of this application. Figure 4 This is another partial structural example of the outer stabilizing sleeve according to an embodiment of this application. As an optional example, in this embodiment, the outer stabilizing sleeve 11 is generally a hollow circular tube. Multiple locking grooves 14 are circumferentially arranged on the inner wall of the outer stabilizing sleeve 11. The cross-section of the locking groove 14 is rectangular, and the groove is parallel to the axis of the outer stabilizing sleeve 11. In practical applications, the cross-section of the locking groove 14 can also be semi-circular, semi-elliptical, or other shapes; this application does not impose any limitations on this.

[0030] As an optional example, in this embodiment, the connecting support wall 12 is spirally distributed along the axis of the outer stabilizing sleeve 11, and the stabilizing wall 13 is spirally distributed along the axis of the outer stabilizing sleeve 11, with the connecting support wall 12 and the connecting stabilizing wall 13 perpendicular to each other. In practical applications, the spirally distributed connecting support wall 12 can significantly increase the effective support length of the stabilizing wall 13, significantly improve the supporting effect of the connecting support wall 12 on the stabilizing wall 13, and improve the radial stability and impact resistance of the stabilizing wall 13.

[0031] Adjacent stabilizing walls 13 are separated by a first interval 15, and adjacent connecting support walls 12 are separated by a second interval 16. The arrangement of multiple connecting support walls 12 and multiple stabilizing walls 13, i.e., the arrangement of the first interval 15 and the second interval 16, allows the connecting support walls 12 and stabilizing walls 13 to have space for elastic deformation when subjected to impact or external forces in various directions, such as dragging or vibration. Through elastic deformation, the external energy received is absorbed, thereby protecting the safety and stability of the internal components.

[0032] In this embodiment, the cross-section of the connecting support wall 12 is rectangular in the radial direction of the outer stabilizing sleeve 11. The cross-section of the stabilizing wall 13 is a curved shape that bends inwards in the radial direction of the outer stabilizing sleeve 11. For example, in this embodiment, multiple stabilizing walls 13 have the same radius of curvature, and these multiple stabilizing walls with the same radius of curvature form an integral cylindrical protective layer outside the connecting support wall 12.

[0033] In practical applications, the outer stabilizing sleeve 1 of this embodiment is 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 stable fireproof cable assembly of this application, those skilled in the art can also select other materials to prepare the outer stabilizing sleeve 1 according to the application scenario, and this application does not limit this.

[0034] Figure 5 This is a partial structural example diagram of a robust fire-resistant cable assembly according to an embodiment of this application, as shown below. Figures 1 to 5 As shown, in this embodiment, the inner stabilizing sleeve 2 consists of an inner stabilizing sleeve body 21 that is circular in shape, and a plurality of locking protrusions 22 that are circumferentially distributed on the outside of the inner stabilizing sleeve body 21 and integrally connected to the inner stabilizing sleeve body 21. The locking protrusions 22 match the locking grooves 14. Through the cooperation of the locking protrusions 22 and the locking grooves 14, the inner stabilizing sleeve 2 radially fixes the outer stabilizing sleeve 1, thereby improving the connection stability between the outer stabilizing sleeve 1 and the inner stabilizing sleeve 2.

[0035] It should be noted that the inner stabilizing sleeve 2 in this embodiment is made of silicone rubber, low-smoke halogen-free flame-retardant polyolefin, or other materials with excellent temperature resistance and mechanical and physical properties. Those skilled in the art, when implementing the stable fireproof cable assembly of this application, may also select other materials to prepare the inner stabilizing sleeve 2 according to the application scenario; this application does not impose any restrictions on this. Optionally, the inner stabilizing sleeve 2 and the outer stabilizing sleeve 1 in this application may be made of the same or different materials.

[0036] In this embodiment, the fireproof cable core 3 consists of a conductor 31 and a fireproof insulation layer 32 and a fireproof protective layer 33 sequentially covering the outside of the conductor 31. In this embodiment, the conductor 31 is made of annealed copper wire stranded together, the fireproof insulation layer 32 is made of inorganic mineral non-combustible mica tape wrapped laterally, and the fireproof protective layer 33 is made of metal material such as annealed copper tape longitudinally welded and then corrugated. In practical applications, the conductor 31, fireproof insulation layer 32, and fireproof protective layer 33 in this embodiment can also be made of other materials or materials depending on the specific application scenario; this embodiment does not impose any restrictions on this.

[0037] In practical applications, the robust fire-resistant cable assembly of this application embodiment can improve the fire-resistant cable's resistance to external interference and damage in the laying environment, improve the fire-resistant cable's impact resistance, drag resistance and vibration resistance, improve the service safety performance of the fire-resistant cable, and thus improve the line safety.

[0038] 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 robust fire-resistant cable assembly, characterized in that, The robust fireproof cable assembly includes an outer stabilizing sleeve, an inner stabilizing sleeve, and a fireproof cable core. The inner stabilizing sleeve and the outer stabilizing sleeve are sequentially wrapped around the outside of the fireproof cable core from the inside out, and the inner stabilizing sleeve and the outer stabilizing sleeve are locked together.

2. The robust fire-resistant cable assembly according to claim 1, characterized in that, The outer stabilizing sleeve, from the inside out, includes an outer stabilizing tube, multiple circumferentially distributed connecting support walls on the outside of the outer stabilizing tube and integrally connected to the outer stabilizing tube, and multiple stabilizing walls that correspond one-to-one with the connecting support walls and integrally connected to them.

3. The robust fire-resistant cable assembly according to claim 2, characterized in that, The outer stabilizing sleeve is a hollow cylindrical tube. Multiple locking grooves are provided on the inner wall of the outer stabilizing sleeve. The groove has a rectangular cross-section and is parallel to the axis of the outer stabilizing sleeve.

4. The robust fire-resistant cable assembly according to claim 3, characterized in that, The connecting support wall is spirally distributed along the axis of the outer stabilizing sleeve, and the stabilizing wall is spirally distributed along the axis of the outer stabilizing sleeve. The connecting support wall and the connecting stabilizing wall are perpendicular to each other.

5. The robust fire-resistant cable assembly according to claim 4, characterized in that, In the radial direction of the outer stabilizing sleeve, the cross section of the connecting support wall is rectangular.

6. The robust fire-resistant cable assembly according to claim 4, characterized in that, In the radial direction of the outer stabilizing sleeve, the cross-section of the stabilizing wall is a curved shape that bends inward.

7. The robust fire-resistant cable assembly according to claim 6, characterized in that, Adjacent stable walls are separated by a first gap, and adjacent connecting support walls are separated by a second gap.

8. The robust fire-resistant cable assembly according to claim 7, characterized in that, The inner stabilizing sleeve consists of an inner stabilizing sleeve body that is circular in shape, and multiple locking protrusions that are circumferentially distributed on the outside of the inner stabilizing sleeve body and integrally connected to the inner stabilizing sleeve body. The locking protrusions match the locking groove.

9. The robust fire-resistant cable assembly according to claim 1, characterized in that, The fireproof cable core consists of a conductor and a fireproof insulation layer and a fireproof protective layer that are successively wrapped around the outside of the conductor.

10. The robust fire-resistant cable assembly according to claim 9, characterized in that, The conductor is made of stranded annealed copper wire, the fireproof insulation layer is made of inorganic mineral non-combustible mica tape wrapped laterally, and the fireproof protective layer is made of annealed copper tape longitudinally welded and then rolled into shape.

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