Long-life environment-friendly flame-retardant cable

Abstract

According to the long-life environment-friendly flame-retardant cable provided by the utility model, firstly, the round piece is arranged to be matched with the flame-retardant material, so that the round piece can be tightly attached to the surface of the cable core, and when the cable is bent or stretched, the position of the cable core is effectively supported and restrained, and the cable core is prevented from loosening or deforming, thereby remarkably improving the structural stability and the use reliability of the cable. Besides, the shielding layer in the sheath is filled with the flame-retardant material, and the design of the flame-retardant layer is combined, so that the cable is endowed with excellent flame-retardant performance, flame propagation can be effectively inhibited in a high-temperature or fire environment, and a guarantee is provided for loss reduction and rescue time gaining. In order to achieve the environmental protection target, the low-smoke halogen-free sheath layer is adopted, harmful gas release can be reduced under the high-temperature condition, and the modern environmental protection requirement is met. In conclusion, the cable realizes organic combination of high flame retardance, high stability, strong tensile property and environmental protection performance through the multi-layer structure design of the wire core, the round piece and the sheath.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a long life environmental protection flame -retardant cable. BACKGROUND

[0002] With the wide application of electronic technology and power equipment, as an important component of the power system, the quality and performance of the cable have a crucial influence on the safety and stability of the system. Traditional cables mostly use metal wires as the core, but in the process of use, the cable is easily affected by the external environment, especially when bending and stretching, the core in the cable may appear loose, deformation and other problems, thereby reducing the service life and safety of the cable. At the same time, with the increasing strictness of environmental protection regulations, the emission of harmful substances and flammability of traditional cable materials have become a difficult problem to be solved. In order to improve the reliability and safety of the cable, it has become an urgent need to develop a cable with flame retardant, environmental protection, strong durability and bending resistance. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a long life environmental protection flame -retardant cable, has flame -retardant, environmental protection, strong durability and strong bending resistance and other advantages.

[0004] A long life environmental protection flame -retardant cable, containing the core, the round piece and the sheath, the round piece contains two opposite and end -to -end arc plate, the connecting plate set up on two symmetry lines of the arc plate and the arc plate connected to the connecting plate end, two the core is pasted with two arc plate respectively, the sheath contains the shielding layer, the anti -stretch layer, the flame -retardant layer and the low smoke halogen -free sheath layer set up in the core and the round piece outside, wherein, the shielding layer is filled with flame -retardant material.

[0005] Preferably, the core contains a conductor and an insulating layer, a first braided layer and a second braided layer wrapped around the outside of the conductor.

[0006] Preferably, the first braided layer is a braided layer made of a strip-shaped metal belt, and the second braided layer is a braided layer made of an aromatic fiber.

[0007] Preferably, the flame -retardant material is a fluorophlogopite tape flame -retardant material.

[0008] Preferably, the shielding layer is an aluminum foil shielding layer.

[0009] Preferably, the anti -stretch layer is a stainless steel wire anti -stretch layer.

[0010] Preferably, the flame -retardant layer is a stone wool flame -retardant material layer.

[0011] Preferably, the round piece is made of an elastic rubber material.

[0012] Preferably, the two end portions of the arc-shaped plates are connected with the two ends of the arc-shaped plate respectively.

[0013] Preferably, a steel wire is arranged between the cores.

[0014] Compared with the prior art, the long-life environment-friendly flame-retardant cable has the following beneficial effects:

[0015] The long-life environment-friendly flame-retardant cable provided by the utility model firstly enables the surface of the core to be closely attached to the flame-retardant material through the setting of the round piece, effectively supports and restricts the position of the core when the cable is bent or stretched, prevents the core from being loose or deformed, and thus significantly improves the structural stability and use reliability of the cable. Meanwhile, the sheath design comprises a tensile-resistant layer which cooperates with the round piece to enhance the tensile resistance of the cable as a whole, so that the cable can maintain the integrity of the core arrangement and prolong the service life of the cable even under a large tensile force in construction or use. In addition, the shielding layer in the sheath is filled with the flame-retardant material and combines with the flame-retardant layer design to endow the cable with excellent flame-retardant performance, which can effectively inhibit the spread of flame in a high-temperature or fire environment and provide protection for reducing losses and gaining time for rescue. In order to achieve the environmental protection goal, a low-smoke halogen-free sheath layer is also adopted, which can reduce the release of harmful gases under high-temperature conditions and meet the modern environmental protection requirements. In summary, the cable realizes the organic combination of high flame resistance, high stability, strong tensile resistance and environmental protection performance through the multi-level structure design of the core, the round piece and the sheath. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The long-life environment-friendly flame-retardant cable is shown in the structure diagram.

[0017] Among them:

[0018] 10 - core, 20 - round piece, 30 - sheath, 40 - flame-retardant material, 50 - steel wire, 11 - conductor, 12 - insulating layer, 13 - first braided layer, 14 - second braided layer, 21 - arc plate, 22 - connecting plate, 23 - arc-shaped plate, 31 - shielding layer, 32 - tensile-resistant layer, 33 - flame-retardant layer, 34 - low-smoke halogen-free sheath layer. DETAILED DESCRIPTION

[0019] The embodiments described below are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] Reference Figure 1The embodiment provides a long-service-life environment-friendly flame-retardant cable, which comprises a core 10, a round piece 20 and a sheath 30, the round piece 20 comprises two opposite circular-arc plates 21 connected at the ends, a connecting plate 22 arranged on the symmetry line of the two circular-arc plates 21 and an arc plate 23 connected to the end of the connecting plate 22, the two circular-arc plates 21 are respectively attached to the two core 10, and the sheath 30 comprises a shielding layer 31, a tensile-resistant layer 32, a flame-retardant layer 33 and a low-smoke halogen-free sheath layer 34 which are arranged outside the core 10 and the round piece 20, and the shielding layer 31 is filled with a flame-retardant material 40.

[0021] Preferably, the core 10 comprises a conductor 11, an insulating layer 12, a first braided layer 13 and a second braided layer 14 which are arranged outside the conductor 11. In the embodiment, the first braided layer 13 is a braided layer made of strip-shaped metal belts, and the second braided layer 14 is a braided layer made of aromatic fiber. In the application, the insulating layer 12 arranged outside the conductor 11 plays a role of electrical isolation, prevents current leakage and short circuit and provides necessary mechanical protection to prevent the conductor 11 from being damaged. The first braided layer 13 made of strip-shaped metal belts not only provides additional mechanical strength, enhances the tensile and compression resistance of the cable, but also plays a role of electromagnetic shielding, effectively reduces electromagnetic interference and improves the clarity of signal transmission. The second braided layer 14 is made of aromatic fiber, and the aromatic fiber provides further protection to the cable due to its high strength, wear resistance and corrosion resistance. The second braided layer 14 not only enhances the overall structural strength of the cable, but also improves the durability and anti-aging performance of the cable and prolongs the service life of the cable.

[0022] Preferably, the flame-retardant material 40 is fluorophlogopite tape flame-retardant material 40. The flame-retardant material 40 not only closely matches the round piece, but also realizes the effect that the core 10 is not loose when the cable is bent or stretched. Meanwhile, the fluorophlogopite tape effectively improves the flame-retardant grade of the cable due to its excellent high-temperature resistance and fire resistance, effectively inhibits the spread of flame and slows down the expansion of fire even in a high-temperature or fire environment. In addition, the fluorophlogopite tape also has good electrical insulation performance, further enhances the electrical safety of the cable. Therefore, the fluorophlogopite tape used as the flame-retardant material 40 not only strengthens the structural stability and flame-retardant performance of the cable, but also guarantees the safe and reliable operation of the cable under extreme conditions.

[0023] Preferably, the shielding layer 31 is an aluminum foil shielding layer 31. The aluminum foil shielding layer 31 can effectively block the invasion of external electromagnetic interference signals due to its high conductivity and good electromagnetic shielding effect, and prevent the leakage of internal signals of the cable, thereby ensuring the clarity and stability of signal transmission.

[0024] Preferably, the tensile layer 32 is a stainless steel wire tensile layer 32. The stainless steel wire tensile layer 32 greatly enhances the mechanical strength and durability of the long-life environmentally friendly flame-retardant cable. When the cable is stretched by external force, the stainless steel wire tensile layer 32 can effectively disperse and bear the tension, prevent the deformation and damage of the internal structure of the cable, and ensure the integrity and stability of the cable. In addition, stainless steel wire also has good fatigue resistance, can maintain stable performance in the environment of long-term tensile stress, prolong the service life of the cable. Therefore, using stainless steel wire as the tensile layer 32 not only significantly improves the tensile performance of the cable, but also enhances the reliability and durability of the cable, providing a solid guarantee for the application of long-life environmentally friendly flame-retardant cable in various complex environments.

[0025] Preferably, the flame-retardant layer 33 is a layer of asbestos flame-retardant material. As a natural inorganic fiber material, asbestos is known for its excellent high-temperature resistance, fire resistance and heat insulation performance. In the cable structure, the asbestos flame-retardant material layer can effectively insulate external heat sources and prevent the spread of flames and rapid temperature rise, providing a solid barrier for the core 10 and other materials inside the cable.

[0026] Preferably, the low-smoke halogen-free sheath layer 34 does not produce toxic hydrogen halide gas when burning, thereby greatly reducing the harm to personnel and the environment in a fire. In addition, the low-smoke halogen-free sheath layer also has excellent flame-retardant performance, which can effectively suppress the spread of fire even under the action of a fire source, thus gaining valuable time for emergency handling and providing additional safety protection for the cable.

[0027] Preferably, the round piece 20 is made of elastic rubber material. The round piece 20 made of elastic rubber material effectively solves the problem of cable looseness by its tight fit, and provides additional protection and support for the cable, ensuring the stability and safety of the cable in various complex environments. It should be noted that the contact between the arc plate 21 of the round piece 20 and the surface of the core 10 can limit the free movement of the core 10, ensuring that it does not become loose or misaligned when the cable is bent or stretched. Specifically, when bent, the arc plate 21 provides external force constraint between the two adjacent cores 10, maintaining the stability of the core 10. The arc plate 23 is connected to the end of the connecting plate 22 and forms a wrapping structure, which further prevents the core 10 from deforming or loosening due to external forces.

[0028] Preferably, the two ends of the arc-shaped plate 23 are connected with the two ends of the arc plate 21 respectively. This design not only enhances the overall structural strength of the round piece 20, but also enables the arc plate 21 to more evenly distribute external forces when the cable is bent, avoiding damage to the core 10 or breakage of the round piece 20 due to stress concentration. At the same time, the arrangement of the arc-shaped plate 23 also improves the wrapping and sealing of the cable by the round piece 20, further enhancing the protection and durability of the cable.

[0029] Preferably, a steel wire 50 is inserted between the cores 10. This provides additional support and fixation between the cores 10, effectively preventing the relative displacement or loosening of the cores 10 when the cable is bent or stretched, ensuring the stability and integrity of the cable structure. Secondly, the arrangement of the steel wire 50 also enhances the overall tensile resistance of the cable, improving the load-bearing capacity of the cable when subjected to external forces, and prolonging the service life of the cable.

[0030] The utility model provides a long -life environmental protection flame -retardant cable, first, through set up round piece 20 cooperation flame -retardant material 40 makes can tightly adhere to the surface of core 10, when the cable is bent or stretched, effectively support and restrict the position of core 10, prevent the core 10 to appear loose or deformation, thereby significantly improve the structural stability and use reliability of cable. At the same time, the sheath 30 design includes tensile layer 32, and cooperates with the round piece 20, which can enhance the overall tensile resistance of the cable. Even if it bears a large tensile force during construction or use, it can still maintain the integrity of the core 10 arrangement and prolong the service life of the cable. In addition, the shielding layer 31 in the sheath 30 is filled with flame-retardant material 40, and combined with the design of the flame-retardant layer 33, the cable has excellent flame-retardant properties, which can effectively suppress flame propagation in high-temperature or fire environments, providing protection for reducing losses and gaining time for rescue. In order to achieve the goal of environmental protection, low-smoke and halogen-free sheath layer 34 is also used, which can reduce the release of harmful gases under high temperature conditions, meeting modern environmental protection requirements. In summary, through the multi-level structure design of the core 10, the round piece 20 and the sheath 30, the cable realizes the organic combination of high flame retardancy, high stability, strong tensile resistance and environmental protection performance.

[0031] The above disclosure is only a few preferred embodiments of the utility model, of course, cannot limit the scope of the utility model, therefore the equivalent changes made in the utility model patent range still belong to the scope covered by the utility model.

Claims

1. A long life, environmentally friendly, flame retardant cable comprising a core, characterised in that: The cable further comprises a round piece and a sheath, the round piece comprises two opposite and end-connected arc plates, a connecting plate arranged on the symmetry line of the two arc plates and an arc plate connected to the end of the connecting plate, the two arc plates are respectively attached to the two cores, the sheath comprises a shielding layer, a tensile-resistant layer, a flame-retardant layer and a low-smoke halogen-free sheath layer arranged outside the core and the round piece, and the shielding layer is filled with a flame-retardant material.

2. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The core comprises a conductor and an insulating layer, a first braided layer and a second braided layer arranged outside the conductor.

3. The long lasting environment friendly flame retardant cable as claimed in claim 2, wherein, The first braided layer is a braided layer made of a strip-shaped metal belt, and the second braided layer is a braided layer made of an aromatic fiber.

4. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The flame-retardant material is a fluoromicatitanite belt flame-retardant material.

5. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The shielding layer is an aluminum foil shielding layer.

6. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The tensile-resistant layer is a stainless steel wire tensile-resistant layer.

7. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The flame-retardant layer is a stone wool flame-retardant material layer.

8. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The round piece is made of an elastic rubber material.

9. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, The ends of the two arc plates are respectively connected to the two ends of the arc plate.

10. The long lasting environment friendly flame retardant cable as claimed in claim 1, wherein, A steel wire is arranged between the two cores.

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