200 DEG C high-temperature-resistant, high-flame-retardant, low-smoke and wear-resistant cable for fire alarm system

Abstract

The utility model belongs to the field of wires and cables, particularly relates to a 200 DEG C high-temperature-resistant, high-flame-retardant, low-smoke and wear-resistant cable for a fire alarm system, and aims to solve the problems that the conventional cable is limited in fire resistance, relatively narrow in cable material and safety and temperature-resistant range, poor in environmental adaptability and incapable of effectively coping with complex fire scenes. The outer wall of each conductor is provided with an insulating layer, and the outer walls of the plurality of insulating layers are provided with the same aluminum foil. The ground wire is used for ensuring electrical safety, and the ground wire is located in the aluminum foil; the sheath is used for isolating and protecting the internal structure of the cable, extremely little toxic smog and harmful gas are generated in combustion, extremely little threat is caused to escape of personnel in a fire scene and safety of firemen, the problems of corrosion, aging and the like are solved, the cable is very remarkable, transmission of alarm signals is ensured, and meanwhile, the cable can be used in a long-time high-temperature environment and a complex fire scene. The system still operates stably, and alarm delay or system failure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to wire and cable technical field especially relates to a 200 DEG C high temperature resistant high flame -retardant low smoke wear -resisting fire alarm system cable. BACKGROUND

[0002] At present, although the traditional fire alarm wire has certain fire resistance, most standard fire alarm cables have short continuous working time in high temperature and fire environment, generally speaking, the traditional fire alarm wire can only maintain for several minutes to tens of minutes in fire, if the fire lasts for a long time, the traditional fire alarm wire can be burnt or damaged, leading to the failure of the alarm system, thereby affecting the escape and rescue operation, in high humidity, low temperature or chemical corrosion environment, the traditional fire alarm wire can have corrosion, aging and other problems, leading to its loss of function.

[0003] In order to solve the problems of limited fire resistance, narrow cable material and safety, narrow temperature range, poor environmental adaptability and inability to effectively respond to complex fire scenes, a 200 DEG C high temperature resistant high flame -retardant low smoke wear -resisting fire alarm system cable is developed. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of 200 DEG C high temperature resistant high flame -retardant low smoke wear -resisting fire alarm system cables, to solve the problems of limited fire resistance in prior art, cable material and safety, narrow temperature range, poor environmental adaptability, cannot effectively respond to complex fire scenes.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of 200 DEG C high temperature resistant high flame -retardant low smoke wear -resisting fire alarm system cable, including multiple conductors, the outer wall of the conductor is provided with insulating layer, the outer wall of multiple insulating layers is provided with same aluminum foil;

[0007] Ground wire for ensuring electrical safety, the ground wire is located in the inside of aluminum foil;

[0008] Sheath for isolating and protecting cable internal structure, the sheath is located on the outer wall of aluminum foil;

[0009] Protection mechanism for protecting ground wire and multiple conductors, the protection mechanism is arranged in the inside of sheath, and the protection mechanism includes support, and the support is between ground wire and multiple insulating layers.

[0010] In a possible design, the conductor is composed of multiple strands of fine silver-plated copper strands.

[0011] In a possible design, the conductor is composed of multiple strands of fine silver-plated copper strands.

[0012] In one possible design, both the sheath and the insulation layer are made of FEP.

[0013] In one possible design, the aluminum foil employs a twisted-pair structure.

[0014] In one possible design, a filler is provided between the support and the aluminum foil.

[0015] In one possible design, the outer wall of the bracket has multiple main placement slots arranged in a ring, and multiple insulating layers are respectively located inside the multiple main placement slots. The outer wall of the bracket has secondary placement slots, and the ground wire is located inside the secondary placement slots.

[0016] In one possible design, the protective assembly further includes a mesh sleeve fitted over the outer wall of the aluminum foil.

[0017] In this application, in practical use, the conductor is made of multi-strand finely silver-plated copper or tin-plated copper stranded into a round shape with a smooth surface and high conductivity. This reduces conductor resistance, improves current transmission efficiency, and enhances the cable's conductivity. The multi-strand stranded structure ensures high conductivity while also increasing conductor flexibility to adapt to complex installation requirements.

[0018] The insulation layer uses FEP high-temperature resistant material, which ensures that the cable does not degrade in high-temperature environments, maintains the performance of the conductor, and prevents cable aging and damage. FEP as an insulation material has high dielectric strength and low dielectric constant, ensuring its use in high-frequency and high-voltage environments.

[0019] During cabling, multiple insulation layers are wrapped with aluminum foil to protect the fire alarm wire from external electromagnetic interference, improving the system's anti-interference capability. The use of twisted-pair cable structure effectively reduces external electromagnetic interference and improves signal transmission quality.

[0020] During the sheath production process, the sheath adopts an extrusion process to ensure the roundness of the cable. The sheath is also made of FEP high-temperature resistant material to ensure resistance to chemical corrosion and the erosion of various acids, alkalis and solvents; it also ensures resistance to ultraviolet radiation and is not easily aged by ultraviolet radiation. FEP releases less harmful gases and produces less smoke, making it widely used.

[0021] The bracket can limit and support the ground wire and multiple conductors, which can increase the original stability and make the cable more resistant to pressure. The outer mesh sleeve can prevent rodents and insects from gnawing and damaging the outer sheath while ensuring the original curvature of the cable. They will be blocked from further damaging the internal structure.

[0022] In this utility model, the cable for a 200℃ high temperature resistant, high flame retardant, low smoke and wear resistant fire alarm system, through the ground wire, can conduct the fault current to the ground in the event of leakage or short circuit, prevent electric shock and equipment damage, ensure that the cable works normally in harsh environments, and support the stable operation of the fire alarm system.

[0023] In this utility model, the cable for a 200℃ high temperature resistant, high flame retardant, low smoke and wear resistant fire alarm system can increase the original stability and make the cable have a better pressure resistance through the protective mechanism. In addition, the outer mesh sleeve can prevent rodents and insects from gnawing and damaging the outer sheath while ensuring the original curvature of the cable. They will be blocked and unable to continue to damage the internal structure.

[0024] In this invention, the amount of toxic smoke and harmful gases produced during combustion is extremely small, posing minimal threat to personnel escape and firefighter safety at the fire scene. Furthermore, it exhibits significant resistance to corrosion and aging, ensuring the transmission of alarm signals. Moreover, the system remains stable even under prolonged high-temperature environments and complex fire scenarios, preventing alarm delays or system failures. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the planar structure of a cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system proposed in this utility model.

[0026] Figure 2 This is a three-dimensional structural diagram of a cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the internal cross-sectional structure of a cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system proposed in this utility model.

[0028] Figure 4 This is a three-dimensional structural diagram of a cable bracket for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system proposed in this utility model.

[0029] In the diagram: 1. Sheath; 2. Mesh sleeve; 3. Ground wire; 4. Aluminum foil; 5. Filler; 6. Insulation layer; 7. Conductor; 8. Support; 9. Main placement slot; 10. Secondary placement slot. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1

[0032] Reference Figures 1-3 A cable includes: multiple conductors 7, which are made of multiple strands of finely silver-plated copper or tin-plated copper stranded together to improve conductivity and mechanical strength. Each conductor 7 has an insulation layer 6 on its outer wall, the insulation layer 6 being made of FEP (fluorinated ethylene propylene), a material with excellent high-temperature resistance, flame retardancy, and low smoke properties. The outer walls of the multiple insulation layers 6 are collectively wrapped with an aluminum foil 4, which employs a twisted-pair structure to enhance electromagnetic shielding.

[0033] A ground wire 3 is installed inside the aluminum foil 4. The ground wire 3 is used to ensure the electrical safety of the cable and prevent static electricity accumulation and electromagnetic interference. The outer wall of the aluminum foil 4 is wrapped with a sheath 1, which is also made of FEP material. The sheath 1 is used to isolate and protect the internal structure of the cable and prevent the external environment and physical damage from affecting the performance of the cable.

[0034] This application can be used in the field of wires and cables, or in other fields applicable to this application.

[0035] Example 2

[0036] refer to Figures 1-3 An improvement upon Example 1: A high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system cable for 200℃ applications in the wire and cable field. To enhance the overall protective performance of the cable, a protective mechanism is installed inside the sheath 1. The protective mechanism includes a support 8 located between the ground wire 3 and multiple insulation layers 6. A filler 5 is provided between the support 8 and the aluminum foil 4. The filler 5 can be a flame-retardant, high-temperature resistant material, such as an inorganic flame-retardant filler, to increase the cable's mechanical strength and flame-retardant properties.

[0037] Reference Figure 4 The outer wall of the bracket 8 has multiple main placement slots 9 arranged in a ring. An insulating layer 6 is placed in each main placement slot 9 to ensure that the conductor 7 is fixed in position and isolated from each other. In addition, the outer wall of the bracket 8 also has secondary placement slots 10, in which the ground wire 3 is located. This design keeps a certain distance between the ground wire 3 and the conductor 7, avoiding electrical interference.

[0038] To further enhance the cable's abrasion resistance and mechanical strength, a mesh sleeve 2 is also fitted onto the outer wall of the aluminum foil 4. The mesh sleeve 2 is made of high-strength, high-temperature resistant materials, such as stainless steel mesh or high-temperature alloy mesh, which can provide additional physical protection without sacrificing the cable's flexibility.

[0039] 1. The above design ensures that the entire cable can operate continuously for a longer time than traditional fire alarm lines in high temperature and fire environment simulation tests, from a few minutes or tens of minutes to several hours or tens of hours. This guarantees that the fire alarm line will not be burned or damaged and that the alarm system will remain effective, greatly improving escape and rescue operations.

[0040] 2. The outer sheath and insulation layer of the fire alarm line use FEP material, which produces very little toxic smoke and harmful gases during combustion, ensuring that it poses minimal threat to personnel escape and firefighters' safety in high-temperature and fire conditions; the temperature resistance range of the fire alarm line has been effectively improved to a certain extent, from the original 70℃ to 90℃ temperature range to 260℃, ensuring that the cable will not be damaged and can work normally.

[0041] 3. In extreme high-temperature environments, the reliability and stability of FEP materials ensure the normal operation of fire alarm systems and their adaptability to extreme or special environmental conditions. In high-humidity, low-temperature, or chemically corrosive environments, corrosion and aging issues are significantly mitigated, guaranteeing alarm signal transmission. Furthermore, the system remains stable in prolonged high-temperature environments and complex fire scenarios, preventing alarm delays or system failures. In intelligent buildings, the intelligence of fire alarm circuits enables real-time monitoring and troubleshooting, reducing manual intervention to check system status and simplifying maintenance and management.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system, characterized in that, include: Multiple conductors (7), the outer wall of the conductors (7) is provided with an insulating layer (6), and the outer wall of the multiple insulating layers (6) is provided with the same aluminum foil (4); A ground wire (3) is used to ensure electrical safety, and the ground wire (3) is located inside the aluminum foil (4); A sheath (1) is used to isolate and protect the internal structure of the cable, and the sheath (1) is located on the outer wall of the aluminum foil (4); A protective mechanism for protecting the ground wire (3) and multiple conductors (7) is disposed inside the sheath (1) and includes a bracket (8) positioned between the ground wire (3) and multiple insulating layers (6).

2. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 1, characterized in that, The conductor (7) is composed of multiple strands of finely silver-plated copper strands.

3. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 1, characterized in that, The conductor (7) is composed of multiple strands of finely tin-plated copper strands.

4. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 1, characterized in that, The sheath (1) and the insulating layer (6) are both made of FEP.

5. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 1, characterized in that, The aluminum foil (4) adopts a twisted pair structure.

6. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 5, characterized in that, A filler (5) is provided between the support (8) and the aluminum foil (4).

7. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 6, characterized in that, The bracket (8) has multiple main placement slots (9) arranged in a ring on its outer wall, and multiple insulating layers (6) are located inside the multiple main placement slots (9). The bracket (8) has secondary placement slots (10) on its outer wall, and the ground wire (3) is located inside the secondary placement slots (10).

8. The cable for a 200℃ high-temperature resistant, high-flame-retardant, low-smoke, and wear-resistant fire alarm system according to claim 1, characterized in that, The protective mechanism also includes a mesh sleeve (2), which is fitted onto the outer wall of the aluminum foil (4).

Images