CN223743293U - A flexible fireproof cable - Google Patents
A flexible fireproof cableInfo
- Publication number
- CN223743293U CN223743293U CN202520110922.1U CN202520110922U CN223743293U CN 223743293 U CN223743293 U CN 223743293U CN 202520110922 U CN202520110922 U CN 202520110922U CN 223743293 U CN223743293 U CN 223743293U
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- CN
- China
- Prior art keywords
- cable
- layer
- fireproof
- fireproof cable
- supporting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a flexible fireproof cable which comprises a plurality of cable cores, a plurality of supporting inner liners and an outer sheath, wherein the supporting inner liners are uniformly arranged in the outer sheath at intervals, a plurality of first through holes corresponding to the cable cores are axially formed in the supporting inner liners, the cable cores are respectively arranged in the first through holes in a penetrating mode, each cable core comprises a conductor, an inner wrapping layer and an inner insulating layer, the inner wrapping layer wraps the outer layer of the conductor, the inner insulating layer wraps the inner wrapping layer, fire-resistant filling materials are filled in gaps of the cable cores, the outer insulating layers are wrapped on the peripheries of the fire-resistant filling materials and the supporting inner liners, and an outer fireproof layer is arranged between the outer insulating layer and the outer sheath. According to the utility model, the integral compression resistance of the fireproof cable can be improved through the supporting lining, when the fireproof cable is radially extruded by external force, the supporting lining can bear pressure to deform at first so as to protect the cable core inside, and meanwhile, the supporting lining has less influence on the softness of the fireproof cable, so that the fireproof cable is convenient to construct and install.
Description
Technical Field
The utility model relates to the technical field of fireproof cables, in particular to a flexible fireproof cable.
Background
The fireproof cable is mainly suitable for high-rise buildings, subways, public places and numerous construction projects requiring high quality and high safety, and is used for occasions such as firefighting elevators, firefighting pumps, fire alarms, smoke exhaust systems, emergency lighting, fire hazard areas, high-temperature environments and the like in firefighting systems.
The existing fireproof cable comprises a rigid fireproof cable and a flexible fireproof cable, wherein the rigid fireproof cable is armored with a metal protective layer, the compression strength and the tensile strength of the rigid fireproof cable are higher, but the flexibility of the rigid fireproof cable is lower, the bending radius of the rigid fireproof cable is generally more than 20 times of the outer diameter of the cable, the installation construction is not facilitated, the flexibility of the flexible fireproof cable is higher, the compression strength of the flexible fireproof cable is lower, and the internal cable core is easily broken when the flexible fireproof cable is subjected to falling impact of heavy objects, so that the power transmission is influenced.
Disclosure of utility model
The utility model aims to overcome the defects of the background technology and provide a flexible fireproof cable.
In order to achieve the above purpose, the utility model provides a flexible fireproof cable, which comprises a plurality of cable cores, a plurality of supporting inner liners and an outer sheath, wherein the supporting inner liners are uniformly arranged in the outer sheath at intervals, a plurality of first through holes corresponding to the cable cores are axially formed in the supporting inner liners, the cable cores are respectively arranged in the first through holes in a penetrating mode, the cable cores comprise conductors, inner wrapping layers and inner insulating layers, the inner wrapping layers wrap the outer layers of the conductors, the inner insulating layers wrap the inner wrapping layers, refractory filling materials are filled in gaps of the cable cores, the outer insulating layers are wrapped on the peripheries of the refractory filling materials and the supporting inner liners, and an outer fireproof layer is arranged between the outer insulating layers and the outer sheath. The whole compressive resistance of the fireproof cable can be effectively improved through the supporting lining, when the fireproof cable is radially extruded by external force, the supporting lining can bear pressure to deform at first, so that the cable core inside is protected, the cable core is prevented from deforming or cracking, the cable core inside is protected from being damaged, the safe and stable operation of a circuit is ensured, the influence on softness is reduced when the compressive resistance of the flexible fireproof cable is improved, and the construction and the installation are facilitated.
According to the further optimized technical scheme, the conductor is formed by twisting any one of pure copper wires, silver-plated copper wires and nickel-plated copper wires. The plurality of copper wires are twisted together, so that the conductivity of the conductor is improved and the flexibility is improved.
According to the further optimized technical scheme, the inner wrapping layer is formed by wrapping one or more than one of polytetrafluoroethylene belts, alkali-free glass fiber belts, poly-perfluoroethylene propylene belts and mica tapes. The conductor is fixed through the inner wrapping layer, so that loosening is avoided.
According to the technical scheme, the inner insulating layer is made of glass fiber insulating materials. The insulation effect between the cable cores is increased through the inner insulation layer, and short circuit between the cable cores is avoided.
According to the further optimized technical scheme, the outer sheath is formed by extruding halogen-free low-smoke flame-retardant polyolefin sheath materials. By adopting the halogen-free low-smoke flame-retardant polyolefin sheath material as the protective layer of the outermost layer of the cable, the wear resistance, flame retardance and high temperature resistance of the cable are improved, and no toxic gas is generated under the condition of fire.
According to the further optimized technical scheme, the support lining is made of any one of metal, polytetrafluoroethylene, polyimide and polystyrene sulfide, wherein the polytetrafluoroethylene, the polyimide and the polystyrene sulfide are subjected to modification hardening treatment. The compression resistance is improved by adopting a hard metal material or modified and hardened polytetrafluoroethylene, polyimide and polystyrene sulfide as a supporting lining material.
According to the further optimized technical scheme, the fire-resistant filler is a rope-shaped material formed by cross braiding of phenolic fibers and aramid fibers. The fireproof performance of the cable is improved through the fireproof filler, and meanwhile the mechanical strength of the fireproof cable is improved.
According to a further optimized technical scheme, a plurality of second through holes are axially formed in the support lining, and the rope-shaped materials penetrate through the second through holes to connect the support lining in series. The tensile property of the cable is further improved by stringing the supporting inner liners together.
According to the further optimized technical scheme, the outer insulating layer is formed by wrapping a trinity fluorophlogopite wrapping tape made by attaching mica between two layers of glass cloth. By adopting the trinity fluorophlogopite wrapping tape for wrapping, the cable has good fireproof and insulating properties.
According to the technical scheme, the outer fireproof layer is formed by extruding ceramic silicon rubber. The adoption of the ceramic silicone rubber can ensure the bending performance of the cable and further improve the fireproof performance.
The flexible fireproof cable has the beneficial effects that the integral compression resistance of the fireproof cable can be effectively improved through the supporting lining, when the fireproof cable is radially extruded by external force, the supporting lining can bear pressure to deform at first so as to protect the cable core inside, avoid the cable core from deforming or cracking, ensure the safe and stable operation of a circuit, and meanwhile, the supporting lining is not fully distributed on the whole cable but is arranged at intervals, so that the softness of the fireproof cable is less influenced, the compression resistance is improved, the influence on the softness is reduced, and the flexible fireproof cable is convenient to install and construct.
Drawings
Fig. 1 is a schematic structural view of a flexible fireproof cable according to an embodiment of the present utility model.
Fig. 2 is a schematic cut-away view of a flexible fire-resistant cable support liner in accordance with an embodiment of the utility model.
FIG. 3 is a schematic view of a support liner in accordance with an embodiment of the present utility model.
The cable comprises a cable core 1, a conductor 101, an inner wrapping layer 102, an inner insulating layer 103, a supporting lining 2, a first through hole 201, a second through hole 202, an outer sheath 3, a fire-resistant filler 4, an outer insulating layer 5 and an outer fire-resistant layer 6.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the embodiments of the present utility model more clear, the present utility model is further described in detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for both the fixing action and the circuit communication action.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing embodiments of the utility model and to simplify the description by referring to the figures, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, the flexible fireproof cable disclosed in this embodiment includes a plurality of cable cores 1, a plurality of supporting inner liners 2 and an outer sheath 3, the plurality of supporting inner liners 2 are uniformly arranged in the outer sheath 3 at intervals along the length direction of the cable, a plurality of first through holes corresponding to the cable cores 1 are axially arranged on the supporting inner liners 2, the plurality of cable cores 1 are respectively arranged in the first through holes 201 in a penetrating manner and are bunched together so as to reduce the appearance size of the cable, the cable cores 1 include conductors 101, an inner wrapping layer 102 and an inner insulating layer 103, the inner wrapping layer 102 is wrapped on the outer layer of the conductors 101 and is used for fixing the conductors 101 of each cable core 1 together, the inner insulating layer 103 is wrapped on the inner wrapping layer 102 to prevent current leakage between the cable cores 1 and ensure effective transmission of electric energy or signals, a fire-resistant filler 4 is filled in gaps between the cable cores 1 and plays roles of fire prevention, heat insulation, supporting and protecting the cable, the outer insulation layer 5 is coated on the peripheries of the fireproof filling material 4 and the supporting lining 2, the outer insulation layer 5 can prevent the current of the whole cable from leaking to the outside, short circuit and electric shock risks are caused, the outer fireproof layer 6 is arranged between the outer insulation layer 5 and the outer sheath 3, the outer fireproof layer 6 is used for further improving fireproof performance, prolonging service life, protecting the insulation layer and improving safety, in the embodiment, the whole compression resistance of the fireproof cable can be effectively improved through the supporting lining 2, when the fireproof cable is radially extruded by external force, the supporting lining 2 can bear pressure to deform at first, so as to protect the inner cable core 1, avoid the cable core 1 from deforming or cracking, thereby protecting the inner cable core 1 from damage, ensuring safe and stable operation of the circuit, and because the supporting lining 2 is not fully distributed with the whole cable to form a metal armor layer similar to the traditional cable, therefore, the flexible fireproof cable has less influence on the softness of the fireproof cable, so that the flexible fireproof cable has improved compressive property and reduced influence on the softness, and is convenient to construct and install.
In a specific example, the conductor 101 is twisted with any one of pure copper wire, silver-plated copper wire, and nickel-plated copper wire. The conductor 101 adopts a plurality of copper wires to twist together in a untwisted mode, so that on one hand, the conductive area can be increased, and on the other hand, the conductivity of the conductor 101 is improved, and on the other hand, the flexibility can be improved.
In a specific example, the inner wrap 102 is formed by wrapping any one or more of polytetrafluoroethylene tape, alkali-free glass fiber tape, poly-perfluoroethylene propylene tape and mica tape. By adopting any one or more of polytetrafluoroethylene tape, alkali-free glass fiber tape, poly-perfluoroethylene propylene tape and mica tape to form the inner wrapping layer 102 by wrapping, the copper wires of a plurality of monofilaments can be twisted into the conductor 101 and then fixed together, so that loosening is avoided, the structural stability of the cable core 1 is improved, the insulating performance is enhanced, and the mechanical strength is improved.
In a specific example, the inner insulating layer 103 is made of a glass fiber insulating material, so that the insulating effect between the cable cores 1 is further improved through the inner insulating layer 103, and short circuits between the cable cores 1 are avoided.
In a specific example, the outer sheath 3 is extruded from a halogen-free low-smoke flame retardant polyolefin sheath material. After the halogen-free low-smoke flame-retardant modification treatment, the polyolefin is used as a protective layer of the outermost layer of the cable, has better performances of wear resistance, flame retardance, high temperature resistance and the like, and does not generate toxic gas under the condition of firing.
In a specific example, the support liner 2 is made of any one of metal, polytetrafluoroethylene, polyimide and polystyrene sulfide, wherein the polytetrafluoroethylene, polyimide and polystyrene sulfide are subjected to a modification hardening treatment, and the metal material includes any one of steel wire, steel strip, aluminum strip, copper wire, aluminum alloy strip and lead alloy strip, preferably an aluminum alloy strip, and the compression resistance of the support liner 2 is improved by using the support liner 2 after the polytetrafluoroethylene, polyimide or polystyrene sulfide is hardened and modified.
In a specific example, the refractory filler 4 is a rope-like material formed by cross-knitting phenolic fibers and aramid fibers. The phenolic fiber and the aramid fiber are crossed and woven to form a rope-shaped material, and the rope-shaped material is tightly filled in gaps among the cable cores 1, so that the mechanical strength of the fireproof cable can be increased, stable electrical performance and physical structure can be kept in a high-temperature environment, and the safety and reliability of the cable are ensured.
In a preferred embodiment, a plurality of second through holes 202 are axially formed in the support liner 2, and the rope-shaped material passes through the second through holes 202 to string the support liner 2 together. By concatenating the support liners 2 together, the tensile properties of the cable are further improved.
In a specific example, the outer insulating layer 5 is formed by wrapping a three-in-one fluorophlogopite wrapping tape made by attaching mica 502 between two layers of glass cloth 501. By adopting the trinity fluorophlogopite wrapping tape for wrapping, the cable has good fireproof performance, and meanwhile, the cable is ensured to have excellent electrical performance.
In a specific example, the outer flame retardant layer 6 is extruded from a ceramic silicone rubber. The ceramic silicon rubber has the rubber performance at low temperature, has good elasticity, ensures the bending performance of the cable, and can be quickly sintered into a hard ceramic shell under the high-temperature flame condition, so that an insulating wire core is well fixed, the insulating stability at high temperature is improved, the temperature of a conductor is controlled, the cable is protected from being damaged, and the smoothness of power transmission is kept.
The foregoing is a further detailed description of the utility model in connection with specific/preferred embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several alternatives or modifications can be made to the described embodiments without departing from the spirit of the utility model, and these alternatives or modifications should be considered to be within the scope of the utility model. In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "preferred embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction. Although embodiments of the present utility model and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the utility model as defined by the appended claims.
Claims (10)
1. The flexible fireproof cable is characterized by comprising a plurality of cable cores, a plurality of supporting inner liners and an outer sheath, wherein the supporting inner liners are uniformly arranged in the outer sheath at intervals, a plurality of first through holes corresponding to the cable cores are axially formed in the supporting inner liners, the cable cores are respectively arranged in the first through holes in a penetrating mode, each cable core comprises a conductor, an inner wrapping layer and an inner insulating layer, the inner wrapping layer is wrapped on the outer layer of the conductor, the inner insulating layer is wrapped on the inner wrapping layer, fireproof filling materials are filled in gaps of the cable cores, the outer insulating layers are wrapped on the peripheries of the fireproof filling materials and the supporting inner liners, and an outer fireproof layer is arranged between the outer insulating layers and the outer sheath.
2. The flexible fireproof cable of claim 1 wherein the conductor is twisted with any one of pure copper wire, silver-plated copper wire, and nickel-plated copper wire.
3. The flexible fireproof cable of claim 1 wherein the inner wrapping layer is formed by wrapping one or more of polytetrafluoroethylene tape, alkali-free glass fiber tape, poly-perfluoroethylene propylene tape and mica tape.
4. The flexible fire protection cable of claim 1, wherein said inner insulating layer is made of fiberglass insulation.
5. The flexible fireproof cable of claim 1 wherein the outer sheath is extruded from a halogen-free low smoke flame retardant polyolefin sheath material.
6. The flexible fireproof cable of claim 1 wherein the support liner is made of any one of metal, polytetrafluoroethylene, polyimide, and polystyrene sulfide, wherein the polytetrafluoroethylene, polyimide, and polystyrene sulfide are modified and hardened.
7. The flexible fireproof cable according to claim 1, wherein the fireproof filler is a rope-shaped material formed by interweaving phenolic fibers and aramid fibers.
8. The flexible fireproof cable of claim 7 wherein the support liner is axially perforated with a plurality of second through holes, the rope material passing through the second through holes to connect the support liner in series.
9. The flexible fireproof cable of claim 1 wherein the outer insulating layer is wrapped with a triad fluorophlogopite tape made of mica attached between two layers of glass cloth.
10. The flexible fireproof cable of claim 1 wherein the outer flame retardant layer is extruded from ceramic silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520110922.1U CN223743293U (en) | 2025-01-17 | 2025-01-17 | A flexible fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520110922.1U CN223743293U (en) | 2025-01-17 | 2025-01-17 | A flexible fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223743293U true CN223743293U (en) | 2025-12-30 |
Family
ID=98171398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520110922.1U Active CN223743293U (en) | 2025-01-17 | 2025-01-17 | A flexible fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223743293U (en) |
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2025
- 2025-01-17 CN CN202520110922.1U patent/CN223743293U/en active Active
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