Shock-proof fireproof cable assembly

Abstract

The utility model relates to the technical field of fireproof cables, and provides a shock-proof fireproof cable assembly, which comprises an electric fireproof cable core, an isolation fixing sleeve, a shock-proof protection layer, a plurality of temperature measurement wire cores and an outer protection layer, and is characterized in that the isolation fixing sleeve, the shock-proof protection layer and the outer protection layer are sequentially arranged on the outer side of the electric fireproof cable core from inside to outside; and the plurality of temperature measuring wire cores are arranged between the shock-proof protective layer and the outer protective layer. According to the shock-proof fireproof cable assembly, the shock resistance and the external interference resistance of the fireproof cable can be remarkably improved, the current-carrying temperature and the temperature state in a laid and installed line can be accurately fed back to a maintenance end in real time, the service safety and maintainability of the fireproof cable are remarkably improved, and the service life of the fireproof cable is prolonged. The device is especially suitable for application scenes with complex laying and installation environments or normalized vibration.

Description

Technical Field

[0001] This application relates to the field of fire-resistant cable technology, and in particular to a shock-resistant fire-resistant cable assembly. Background Technology

[0002] Fire-resistant cables, as a key electrical transmission material, are widely used in scenarios with high safety requirements, such as rail transportation, industrial mining, and shipbuilding. Their core function is to maintain the integrity of the wiring in extreme environments such as fires, thereby ensuring the continuity of power supply and signal transmission, and providing reliable electrical protection for personnel evacuation, equipment operation, and emergency rescue.

[0003] However, in the aforementioned application scenarios, fire-resistant cables often face constant vibration conditions. For example, in rail transportation, the frequent operation of trains generates continuous vibration; in the industrial and mining sectors, the operation of large machinery and mining operations cause ground vibration; on ships, engine operation, wave impact, and ship swaying all have varying degrees of vibration impact on cables. These vibrations can have potential negative effects on the structural stability, electrical performance, and fire resistance of the cables.

[0004] Currently, while traditional fire-resistant cables emphasize fire resistance during design and manufacturing, they often fall short in terms of shock resistance. Under vibration, the cable's insulation, sheath, and internal conductor structure may loosen, wear, or even break due to long-term mechanical stress. This can lead to short circuits, insulation failure, or loss of fire resistance, severely impacting the cable's service safety and increasing the risk of fire and equipment malfunction.

[0005] Therefore, how to further improve the shock resistance of fire-resistant cables while ensuring their original fire resistance performance, so as to adapt to long-term stable operation in complex vibration environments, has become an important issue that urgently needs to be addressed in the current cable technology field. Developing a fire-resistant cable with both excellent fire resistance and shock resistance is of great practical significance for improving the safety of electrical systems in rail transit, industrial mining, and shipbuilding, reducing fire risks, protecting the lives and property of personnel, and maintaining the normal operation of equipment. Utility Model Content

[0006] In view of this, in order to overcome the shortcomings of the prior art, this application aims to provide a shock-resistant and fire-resistant cable assembly.

[0007] This application provides a shock-resistant and fireproof cable assembly, including a fireproof power cable core, an isolation and fixing sleeve, a shockproof sheath, multiple temperature measuring wires, and an outer sheath. The isolation and fixing sleeve, the shockproof sheath, and the outer sheath are arranged sequentially from the inside to the outside of the fireproof power cable core, and the multiple temperature measuring wires are arranged between the shockproof sheath and the outer sheath.

[0008] Optionally, in the shock-resistant and fire-resistant cable assembly of this application, the fire-resistant electrical core is composed of a conductor and a fire-resistant insulation layer, a fire-resistant isolation layer, and a metal sheath that are sequentially wrapped around the outside of the conductor from the inside out.

[0009] Optionally, in the shock-resistant and fire-resistant cable assembly of this application, the conductor is made of annealed copper material, the fire-resistant insulation layer is made of non-combustible mica tape wrapped in layers, and the fire-resistant isolation layer is made of alkali-free glass fiber tape wrapped in layers.

[0010] Optionally, in the shock-resistant and fireproof cable assembly of this application, the isolation fixing sleeve is composed of an isolation fixing sleeve body and a fixing protrusion integrally connected to the isolation fixing sleeve body. The isolation fixing sleeve body is annular, and multiple fixing protrusions are evenly distributed on the outer side of the isolation fixing sleeve body. The cross-section of the fixing protrusion is semi-circular.

[0011] Optionally, in the shock-resistant and fire-resistant cable assembly of this application, the isolation fixing sleeve is made of silicone rubber material.

[0012] Optionally, in the shock-resistant and fire-resistant cable assembly of this application, the shock-resistant sheath body is generally ring-shaped, and multiple shock-resistant buffer cavities are distributed circumferentially on the shock-resistant sheath body, with the cross-section of the shock-resistant buffer cavity being a circular arc shape.

[0013] Optionally, in the shock-resistant and fireproof cable assembly of this application, multiple cable trays are distributed on the outer circumference of the shock-resistant sheath body, and each cable tray is arranged in a corresponding manner between adjacent shock-resistant buffer cavities. The cable tray is matched with the temperature measuring wire core.

[0014] Optionally, in the shock-resistant and fireproof cable assembly of this application, multiple fixing grooves are distributed on the inner circumference of the shock-resistant sheath body. Each fixing groove is arranged one-to-one between adjacent shock-resistant buffer cavities. The fixing groove matches the fixing protrusion of the isolation fixing sleeve. The shock-resistant sheath is made of silicone rubber material.

[0015] Optionally, in the shock-resistant and fire-resistant cable assembly of this application, the temperature sensing core consists of a temperature sensing conductor and a temperature sensing insulation layer covering the outside of the temperature sensing conductor.

[0016] Optionally, in the shock-resistant and fireproof cable assembly of this application, the temperature sensing conductor is made of constantan alloy or iron-nickel alloy, and the temperature sensing insulation layer is made of silicone rubber material.

[0017] The shock-resistant and fireproof cable assembly of this application, through comprehensive structural design and material selection, can significantly improve the impact resistance and external interference resistance of fireproof cables, and can accurately feed back the current-carrying temperature and temperature status in the laying and installation line to the maintenance end in real time, significantly improving the service safety and maintainability of fireproof cables, and is especially suitable for application scenarios with complex laying and installation environments or normal vibration. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a structural example diagram of a shock-resistant and fire-resistant cable assembly according to an embodiment of this application;

[0020] Figure 2 This is a structural example diagram of a fire-resistant power cable core according to an embodiment of this application;

[0021] Figure 3 This is a structural example diagram of the isolation fixing sleeve according to an embodiment of this application;

[0022] Figure 4 This is a structural example diagram of the earthquake-resistant layer according to an embodiment of this application;

[0023] Figure 5 This is a structural example diagram of the temperature sensing wire core according to an embodiment of this application;

[0024] In the diagram, 1-fireproof power cable core, 2-isolation and fixing sleeve, 3-shock-resistant sheath, 4-temperature measuring wire core, 5-outer sheath, 11-conductor, 12-fireproof insulation layer, 13-fireproof isolation layer, 14-metal sheath, 21-isolation and fixing sleeve body, 22-fixing protrusion, 31-shock-resistant sheath body, 32-shock-resistant buffer cavity, 33-cable tray, 34-fixing tray, 41-temperature measuring conductor, 42-temperature measuring insulation layer. Detailed Implementation

[0025] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0026] 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.

[0027] 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.

[0028] Figure 1 This is a structural example diagram of a shock-resistant and fire-resistant cable assembly according to an embodiment of this application, as shown below. Figure 1 As shown, in this embodiment, the shock-resistant and fireproof cable assembly includes a fireproof power cable core 1, an isolation and fixing sleeve 2, a shockproof sheath 3, multiple temperature measuring wire cores 4, and an outer sheath 5. The isolation and fixing sleeve 2, the shockproof sheath 3, and the outer sheath 5 are arranged sequentially from the inside to the outside of the fireproof power cable core 1, and the multiple temperature measuring wire cores 4 are arranged between the shockproof sheath 3 and the outer sheath 5.

[0029] Figure 2 This is a structural example diagram of a fire-resistant power cable core according to an embodiment of this application, as shown below. Figure 1 and Figure 2 As shown, in this embodiment, the fire-resistant cable core 1 consists of a conductor 11 and, from the inside out, a fire-resistant insulation layer 12, a fire-resistant isolation layer 13, and a metal sheath 14 sequentially covering the outside of the conductor 11. As an optional example, in this embodiment, the conductor 11 is made of a metallic material with excellent conductivity, such as annealed copper. The fire-resistant insulation layer 12 is made by overlapping and wrapping inorganic non-combustible insulating tape, such as non-combustible mica tape. The fire-resistant isolation layer 13 is made by overlapping and wrapping alkali-free glass fiber tape. In this embodiment, the metal sheath 14 is made of annealed copper.

[0030] Figure 3 This is a structural example diagram of the isolation fixing sleeve according to an embodiment of this application, as shown below. Figures 1 to 3As shown, in this embodiment, the isolation fixing sleeve 2 consists of an isolation fixing sleeve body 21 and fixing protrusions 22 integrally connected to the isolation fixing sleeve body 21. The isolation fixing sleeve body 21 is annular, and multiple fixing protrusions 22 are evenly distributed circumferentially on the outer side of the isolation fixing sleeve body 21. In this embodiment, the cross-section of the fixing protrusions 22 is semi-circular. In practical applications, the fixing protrusions 22 can also be rectangular or other shapes. In practical applications, the isolation fixing sleeve 2 in this embodiment is made of silicone rubber material. It can also be made of other materials with excellent mechanical and physical properties and high temperature resistance, such as low-smoke halogen-free flame-retardant polyolefin materials, depending on the actual application scenario. This embodiment does not limit this.

[0031] Figure 4 This is a structural example diagram of a seismic-resistant layer according to an embodiment of this application, such as... Figures 1 to 4 As shown, in this embodiment, the shock-resistant sheath 3's body 31 is generally annular, with multiple shock-resistant buffer cavities 32 distributed circumferentially on the sheath 31. As an optional example, in this embodiment, the cross-section of the shock-resistant buffer cavity 32 is an arc-shaped section. In practical applications, the cross-section of the shock-resistant buffer cavity 32 can also be circular, elliptical, or other shapes. When the shock-resistant fireproof cable assembly is subjected to external impact or force, the shock-resistant buffer cavities 32 distributed circumferentially on the sheath 31 can undergo elastic deformation, thereby protecting the internal components from damage.

[0032] Multiple cable trays 33 are distributed around the outer circumference of the shock-resistant sheath body 31. Each cable tray 33 is arranged in a corresponding manner between adjacent shock-resistant buffer cavities 32. The cable tray 33 is matched with the temperature measuring wire core 4.

[0033] Multiple fixing grooves 34 are distributed around the inner circumference of the shock-resistant sheath body 31. Each fixing groove 34 is correspondingly positioned between adjacent shock-resistant buffer cavities 32, and the fixing groove 34 matches the fixing protrusion 22 of the isolation fixing sleeve 2. Through the cooperation of the fixing grooves 34 and the fixing protrusion 22 of the isolation fixing sleeve 2, the shock-resistant sheath 3 is securely mounted on the outside of the isolation fixing sleeve 2. When the shock-resistant fireproof cable assembly is subjected to vibration or external impact, the shock-resistant sheath 3 will not rotate. In practical applications, the shock-resistant sheath 3 in this embodiment is made of silicone rubber. However, other materials with excellent mechanical and physical properties and high-temperature resistance can also be selected according to the actual application scenario, such as low-smoke halogen-free flame-retardant polyolefin materials. This embodiment does not impose any limitations on this.

[0034] Figure 5 This is a structural example diagram of the temperature sensing wire core according to an embodiment of this application, such as... Figures 1 to 5As shown, in this embodiment, the temperature-sensing core 4 consists of a temperature-sensing conductor 41 and a temperature-sensing insulation layer 42 covering the outside of the temperature-sensing conductor 41. In this embodiment, the temperature-sensing core 4 allows for real-time measurement of the temperature of the shock-resistant and fire-resistant cable assembly. In practical applications, multiple temperature-sensing cores 4 can measure the current-carrying temperature of the shock-resistant and fire-resistant cable assembly and reflect the temperature of the laid line. For example, the temperature-sensing core 4 can be connected to an external alarm device or temperature display device. When the temperature of the shock-resistant and fire-resistant cable assembly in this embodiment rises or an abnormal temperature rise occurs in the laid line, maintenance personnel can issue an early warning and inspect the line through the external alarm device or temperature display device. As an optional example, in this embodiment, the temperature-sensing conductor 41 can be made of a metal material with high thermal conductivity, such as constantan alloy, iron-nickel alloy, or other metal materials capable of sensitively detecting temperature changes. In this embodiment, the temperature-sensing insulation layer 42 is made of silicone rubber material. Silicone rubber material can transfer external temperature to the temperature-sensing conductor 41 in a high-temperature environment and maintain insulation and physical properties in a high-temperature environment.

[0035] The shock-resistant and fireproof cable assembly of this embodiment, through comprehensive structural design and material selection, can significantly improve the impact resistance and external interference resistance of fireproof cables, and can accurately feed back the current-carrying temperature and temperature status in the laying and installation line to the maintenance end in real time, significantly improving the service safety and maintainability of fireproof cables, and is especially suitable for application scenarios with complex laying and installation environments or normal vibration.

[0036] 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 shock-resistant and fire-resistant cable assembly, characterized in that, The shock-resistant and fireproof cable assembly includes a fireproof power cable core, an isolation and fixing sleeve, a shockproof sheath, multiple temperature measuring wire cores, and an outer sheath. The isolation and fixing sleeve, the shockproof sheath, and the outer sheath are arranged sequentially from the inside to the outside of the fireproof power cable core, and the multiple temperature measuring wire cores are arranged between the shockproof sheath and the outer sheath.

2. The shock-resistant and fire-resistant cable assembly according to claim 1, characterized in that, The fire-resistant conductor core of an electrical wire consists of a conductor and, from the inside out, a fire-resistant insulation layer, a fire-resistant isolation layer, and a metal sheath that are wrapped around the outside of the conductor.

3. The shock-resistant and fire-resistant cable assembly according to claim 2, characterized in that, The conductor is made of annealed copper material, the fireproof insulation layer is made of non-combustible mica tape wrapped in layers, and the fireproof isolation layer is made of alkali-free glass fiber tape wrapped in layers.

4. The shock-resistant and fire-resistant cable assembly according to claim 3, characterized in that, The isolation fixing sleeve consists of an isolation fixing sleeve body and fixing protrusions integrally connected to the isolation fixing sleeve body. The isolation fixing sleeve body is annular, and multiple fixing protrusions are evenly distributed on the outer side of the isolation fixing sleeve body. The cross-section of the fixing protrusions is semi-circular.

5. The shock-resistant and fire-resistant cable assembly according to claim 4, characterized in that, The isolation fixing sleeve is made of silicone rubber.

6. The shock-resistant and fire-resistant cable assembly according to claim 5, characterized in that, The seismic-resistant sheath is generally ring-shaped, with multiple seismic-resistant buffer cavities distributed around its circumference. The cross-section of each seismic-resistant buffer cavity is an arc-shaped waist.

7. The shock-resistant and fire-resistant cable assembly according to claim 6, characterized in that, Multiple cable trays are distributed around the outer circumference of the shock-resistant sheath body. Each cable tray is set between adjacent shock-resistant buffer cavities in a corresponding manner. The cable tray is matched with the temperature measuring wire core (4).

8. The shock-resistant and fire-resistant cable assembly according to claim 7, characterized in that, Multiple fixing grooves are distributed on the inner circumference of the seismic protective layer body. Each fixing groove is set between adjacent seismic buffer cavities in a one-to-one correspondence. The fixing groove matches the fixing protrusion of the isolation fixing sleeve. The seismic protective layer is made of silicone rubber material.

9. The shock-resistant and fire-resistant cable assembly according to claim 8, characterized in that, The temperature measuring wire core consists of a temperature measuring conductor and a temperature measuring insulation layer covering the outside of the temperature measuring conductor.

10. The shock-resistant and fire-resistant cable assembly according to claim 9, characterized in that, The temperature sensing conductor is made of constantan alloy or iron-nickel alloy, and the temperature sensing insulation layer is made of silicone rubber.

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