High-flame-retardant easy-to-tear cotton covered wire

Abstract

The utility model discloses a high flame-retardant easy-to-tear cotton covered wire, which comprises a cable core and a sheath wrapping the cable core, the cable core comprises a plurality of electrified conductors and insulating layers, the insulating layers wrap the outer layers of the electrified conductors, and grounding conductors are arranged between the electrified conductors; the sheath is a fireproof cloth sheath. The cable is reasonable in structural design, and has the following beneficial effects: the fire-resistant cloth sheath is arranged, so that the flame can be effectively prevented from spreading, the risk of fire occurrence and spreading is reduced, and precious time is won for personnel evacuation and property protection; meanwhile, the fireproof cloth sheath is easy to tear, so that the wires can be conveniently and flexibly separated and arranged according to actual requirements in the installation and wiring process, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a high flame-retardant easy-tear cloth wire. Background Technology

[0002] Electric wires and cables are cables used to transmit power, signals, and data. They consist of one or more insulated wires covered with a protective layer. Electric wires and cables have a simple structure and are flexible, easy to bend, and easy to install, making them widely used in various fields such as power, communications, construction, railways, aviation, and home appliances.

[0003] Traditional electrical wires and cables have insufficient flame-retardant properties, making them prone to combustion in high-temperature environments or under internal short circuits, thus causing electrical fires. Currently, electrical fires account for a high proportion and are on the rise, posing a serious threat to people's lives and property.

[0004] Therefore, improving the flame-retardant properties of electrical wires and reducing the risk of fire is a problem we need to solve. Utility Model Content

[0005] The purpose of this invention is to provide a high flame-retardant easy-tear cloth wire to solve the problem of insufficient flame-retardant performance of wires and cables.

[0006] To achieve the above objectives, the present invention provides a high flame-retardant easy-tear cloth wire, comprising a cable core and a sheath covering the cable core. The cable core includes a plurality of current-carrying conductors and an insulation layer. The insulation layer is wrapped around the outer layer of the current-carrying conductors, and a grounding conductor is provided between the current-carrying conductors. The sheath is a fire-resistant cloth sheath.

[0007] Furthermore, the number of the current-carrying conductors is 2, and the number of the grounding conductors is 1.

[0008] Furthermore, the cross-section of the wire is a flat, elongated shape, and the cross-sections of the current-carrying conductor and the grounding conductor are circular.

[0009] Furthermore, the two current-carrying conductors are arranged side by side in the cable core, and a grounding conductor is arranged between the two current-carrying conductors.

[0010] Furthermore, the cross-sectional shape of the cable core is axisymmetric, and there are two axes that can satisfy axisymmetry.

[0011] Furthermore, the current-carrying conductor is a nickel-chromium alloy conductor, which is made of the sixth type of nickel-chromium alloy wire in GB / T 3956 standard. First, the sixth type of nickel-chromium alloy wire is regularly twisted into a single strand, and then each strand is re-twisted.

[0012] Furthermore, the insulating layer is a polyimide layer.

[0013] Furthermore, the nominal thickness of the insulation layer is 0.8 mm, the average thickness of the insulation layer is not less than the nominal thickness, and the thinnest point of the insulation layer is not less than 90% of the nominal value.

[0014] Furthermore, the extrusion thickness of the sheath is controlled at 1.0±0.15mm.

[0015] Furthermore, the grounding conductor is made of the sixth type of copper-nickel alloy wire in GB / T3956 standard. The grounding conductor is made of 19 copper-nickel alloy wires with a diameter of 0.52mm twisted together, with a twist pitch of 40~50mm.

[0016] In summary, the device structure of this utility model is reasonably designed, and the application of the technical solution of this utility model has the following beneficial effects: the fire-resistant cloth sheath can effectively prevent the spread of flames, reduce the risk of fire occurrence and spread, and buy valuable time for personnel evacuation and property protection; at the same time, the fire-resistant cloth sheath has easy-tear characteristics, which facilitates flexible separation and arrangement of wires according to actual needs during installation and wiring, thereby improving construction efficiency. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the high flame-retardant easy-tear cloth wire of this utility model;

[0018] Explanation of reference numerals in the attached diagram: 1-current conductor; 2-insulation layer; 3-sheath; 4-grounding conductor. Detailed Implementation

[0019] 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, but this does not constitute a limitation on the scope of protection of the present utility model.

[0020] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer's left front side is designated as "front," the observer's right rear side as "rear," the observer's left rear side as "left," the observer's right front side as "right," the observer's top as "up," and the observer's bottom as "down." It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below," etc., used in this document to indicate orientation or positional relationships are based on the accompanying drawings and are merely for the purpose of clearly describing this utility model. They do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0021] The existing technology has the following problems:

[0022] 1. Existing electrical wires are not flame-retardant enough and are easily ignited and spread the flame under high temperature or open flame.

[0023] 2. Some wires are difficult to tear apart, causing inconvenience for installation and maintenance.

[0024] Therefore, this application addresses these issues by improving its flame-retardant properties while also making it easy to tear.

[0025] Improving its flame-retardant properties has the following benefits: enhancing fire safety, reducing the burning and spread of wires in a fire, and buying time for personnel evacuation and fire rescue; at the same time, reducing property damage and preventing the burning of wires from causing damage to surrounding equipment and items.

[0026] The benefits of these applications include:

[0027] 1. Significantly improved the fire safety level of places where electrical wires are used, ensuring the safety of people's lives.

[0028] 2. It facilitates construction and maintenance, reducing installation and repair costs.

[0029] 3. It improves the reliability and stability of the wires, reducing accidents and losses caused by wire failures.

[0030] See Figure 1 This utility model provides a high flame-retardant easy-tear cloth wire, including a cable core and a sheath 3 that wraps around the cable core. The cable core includes several current-carrying conductors 1 and an insulation layer 2. The insulation layer 2 wraps around the outer layer of the current-carrying conductors 1. A grounding conductor 4 is provided between the current-carrying conductors 1. The sheath 3 is a fire-resistant cloth sheath.

[0031] In a preferred embodiment of this utility model, the cross-section of the wire is a flat, elongated shape, and the cross-sections of the current-carrying conductor 1 and the grounding conductor 4 are circular. Specifically, the current-carrying conductor 1 and the current-carrying conductor 4 are arranged side by side in the cable core, and the grounding conductor 4 is arranged between the two current-carrying conductors 1. Specifically, the cross-section of the cable core is axially symmetric, and there are two axes that can satisfy axial symmetry.

[0032] Specifically, there are 2 current-carrying conductors 1 and 1 grounding conductor 4. Specifically, the current-carrying conductor 1 is a nickel-chromium alloy conductor, which is made of the sixth type of nickel-chromium alloy wire in GB / T 3956 standard. First, the sixth type of nickel-chromium alloy wire is regularly twisted into a single strand, and then each strand is re-twisted.

[0033] The current-carrying conductor 1 uses the sixth type of nickel-chromium alloy wire in GB / T3956 standard. This single wire is regularly twisted into a single strand, and then each strand is re-twisted, resulting in good bending performance, no loosening, more stable production in subsequent processes, and excellent products.

[0034] The advantages of using nickel-chromium alloy wire conductor 1 are as follows:

[0035] (1) Good high temperature resistance: It can maintain stable electrical properties in high temperature environments and is suitable for high temperature working conditions.

[0036] (2) Good oxidation and corrosion resistance: It is not easily oxidized and corroded in harsh environments, thus extending its service life.

[0037] (3) High resistivity: It can play a role in some applications that require specific resistance values.

[0038] (4) High strength: It has a certain mechanical strength and can withstand a certain amount of tension and pressure.

[0039] (5) Good stability: The electrical performance is relatively stable and is not easily affected by external environmental factors.

[0040] (6) Excellent wear resistance: The surface is not easily worn during long-term use, which helps to maintain good electrical conductivity.

[0041] Specifically, the insulation layer 2 is a polyimide layer; specifically, the nominal thickness of the insulation layer 2 is 0.8 mm, the average thickness of the insulation layer 2 is not less than the nominal thickness, and the thinnest point of the insulation layer 2 is not less than 90% of the nominal value.

[0042] The insulation layer 2 is made of polyimide (PI), the nominal thickness of the insulation layer 2 is 0.8 mm, the average thickness of the insulation layer 2 is not less than the nominal thickness, and the thinnest point of the insulation layer 2 is not less than 90% of the nominal value.

[0043] The advantages of using polyimide (PI) for insulation layer 2 are as follows:

[0044] (1) Excellent high temperature resistance: It can work stably for a long time in high temperature environment and can withstand extreme high temperature in the short term.

[0045] (2) Excellent mechanical properties: It has high strength, high modulus and good tensile properties.

[0046] (3) Excellent insulation performance: Excellent electrical insulation, which can effectively prevent current leakage.

[0047] (4) Strong resistance to chemical corrosion: It can resist the erosion of most chemical substances, including strong acids, strong alkalis and organic solvents.

[0048] (5) Low coefficient of friction: It has self-lubricating properties, low coefficient of friction, and good wear resistance.

[0049] (6) High dimensional stability: The dimensional changes are small under different temperature and humidity conditions.

[0050] (7) Good radiation resistance: It can maintain stable performance in a radiation environment.

[0051] (8) Processability: It can be made into products of various shapes and structures through a variety of processing methods.

[0052] Specifically, the sheath 3 is an easy-to-cut, easy-to-peel, low-smoke, halogen-free, environmentally friendly TXL-8AWG layer; the extrusion thickness of the sheath 3 is controlled at 1.0±0.15mm.

[0053] Sheath 3 is made of easy-to-cut, easy-to-peel, low-smoke, halogen-free, environmentally friendly TXL-8AWG material, with an extrusion thickness controlled at 1.0±0.15mm.

[0054] Sheath 3 is made of easy-to-cut, easy-to-peel, low-smoke, halogen-free, environmentally friendly TXL-8AWG material. Its advantages are as follows:

[0055] (1) Halogen-free: It adopts green and environmentally friendly insulation layer, sheath and special oxygen barrier material, and will not produce halogen-related "secondary pollution" when burning, avoiding the production of carcinogenic "dioxins" and other toxic substances when traditional PVC wires burn.

[0056] (2) High flame retardancy: It can meet the building requirements with high fire protection requirements. It is not easy to burn in a fire and can prevent the spread of flames and the expansion of disasters after burning.

[0057] (3) Low toxicity: The insulation layer and sheath do not contain heavy metals such as lead and cadmium that are harmful to the human body, and will not cause pollution to soil and water sources during use and disposal.

[0058] (4) No corrosive gases are produced: No gases such as HCl are produced during combustion, and very little acid gas is emitted, which causes little damage to personnel, equipment and instruments, making it more environmentally friendly.

[0059] (5) Waterproof and UV protection: It has good waterproof performance and can ensure ultra-low water absorption rate; at the same time, it uses special UV absorbers to give the product good UV protection function, ensuring the safety of use and extending the service life.

[0060] (6) Easy to cut and peel: It is relatively easy to cut and peel, which is convenient for processing and installation;

[0061] (7) High light transmittance: The smoke produced during combustion is extremely thin, which is conducive to the evacuation of personnel and the firefighting work;

[0062] (8) Good weather resistance: It has good weather resistance and can work normally within a certain temperature range (such as -30℃ to 105℃);

[0063] (9) Good softness: It has a suitable hardness, generally 80-90;

[0064] (10) High volume resistivity: typically greater than 10 16 ω / cm 3 ;

[0065] (11) Good high voltage resistance: It can withstand high voltage, such as up to 15kV and has good elasticity and viscosity.

[0066] Specifically, the grounding conductor 4 is made of the sixth type of copper-nickel alloy wire in GB / T3956 standard. The grounding conductor 4 is made of 19 copper-nickel alloy wires with a diameter of 0.52mm twisted together, with a twist pitch of 40~50mm.

[0067] The advantages of using copper-nickel alloy wire for grounding conductor 4 are as follows:

[0068] (1) Good corrosion resistance: It can maintain stable performance in a variety of corrosive environments and is not easy to rust or be corroded.

[0069] (2) High strength and toughness: It has high mechanical strength and a certain degree of toughness, making it less prone to breakage.

[0070] (3) Excellent electrical and thermal conductivity: Although not as good as pure copper, it still has good electrical and thermal conductivity, which can meet the needs of many electrical and thermal conduction applications.

[0071] (4) Low temperature coefficient: The resistance changes relatively little with temperature, which allows it to maintain relatively stable electrical performance in environments with large temperature variations.

[0072] (5) Fatigue resistance: It can withstand repeated bending and stretching and is not prone to fatigue fracture.

[0073] (6) Good processability: It can be made into products of various shapes and specifications through a variety of processing methods.

[0074] (7) Non-magnetic or weakly magnetic: This is advantageous in some applications that are sensitive to magnetism.

[0075] (8) Aesthetics: It has a unique color and appearance and is often used in fields with high requirements for decoration and appearance.

[0076] In summary, the main features of this utility model of electrical wire are as follows:

[0077] 1. Excellent flame retardant properties: It can effectively prevent the spread of flames in high temperature or fire source environments, reduce the risk of fire occurrence and spread, and buy valuable time for personnel evacuation and property protection.

[0078] 2. Parallel structure design: The parallel arrangement of multiple conductors makes the internal structure of the wire more regular, the current transmission more stable, and reduces electromagnetic interference and signal loss.

[0079] 3. Easy-tear feature: The outer fabric layer is easy to tear, making it convenient to flexibly separate and arrange wires according to actual needs during installation and wiring, thus improving construction efficiency.

[0080] 4. Excellent insulation performance: effectively prevents current leakage, ensures electrical safety, and reduces the risk of electric shock.

[0081] 5. Wear and corrosion resistance: It has strong wear and corrosion resistance, and can work stably for a long time in harsh environments, extending the service life of the wire.

[0082] 6. Flexible and adaptable: easy to bend and lay, adapting to various complex wiring scenarios and reducing installation difficulty.

[0083] 7. Low smoke and halogen-free: It produces less smoke during combustion and does not release harmful halogenated gases, reducing harm to human health and the environment.

[0084] 8. High current carrying capacity: It can withstand large current loads and meet the power needs of high-power equipment.

[0085] 9. Excellent anti-aging performance: It can maintain good performance even after long-term use, reducing maintenance costs and replacement frequency.

[0086] 10. Environmentally friendly materials: Manufactured using environmentally friendly raw materials, meeting the requirements of sustainable development.

[0087] 11. The results of electrical performance, mechanical and physical properties, single cable vertical burning test, and bundled burning test (Class A) of conventional flame-retardant Class A electrical wire and high flame-retardant parallel easy-tear cloth wire showed that the char height above the bottom edge of the double torch was less than 0.7m in the bundled burning test (Class A) of the flame-retardant parallel easy-tear cloth wire passed the test, and there was no flame burning on the sample after the flame supply was stopped. (See Table 1 and Table 2).

[0088] Table 1 Comparison of conventional flame-retardant structures and highly flame-retardant structures.

[0089]

[0090] Table 2 Comparison of conventional flame-retardant structures and highly flame-retardant materials

[0091]

[0092] The test results in Tables 1 and 2 show that the flame retardant effect of this application is significantly better than that of the prior art. It can not only effectively retard flames, but also has easy-tear properties.

[0093] Therefore, the high flame-retardant easy-tear cloth wire of this utility model is suitable for the following situations:

[0094] 1. Public buildings: such as schools, libraries, theaters and other densely populated places, in the event of a fire, it is necessary to ensure that the electrical wires are not easily flammable in order to reduce the risk of the fire spreading.

[0095] 2. Industrial applications: Especially in environments containing flammable and explosive substances such as chemicals, petroleum, and natural gas, high flame retardant properties can prevent electrical wires from causing fires or contributing to combustion.

[0096] 3. Data centers and communication facilities: Ensure the continuity and security of information transmission and prevent fires from causing significant damage to critical facilities.

[0097] And these applications also have corresponding importance, for example:

[0098] 1. In high-rise buildings, due to the high density of people and the difficulty of evacuation, the flame-retardant requirements for electrical wires are extremely high. High flame-retardant parallel easy-tear fabric electrical wires can effectively prevent the spread of fire through the wires in the event of a fire, buying valuable time for evacuation. At the same time, the parallel easy-tear fabric facilitates installation and subsequent maintenance.

[0099] 2. In large shopping malls and supermarkets, the numerous electrical devices and complex wiring environments necessitate reliable and easy-to-handle wiring. The high flame-retardant properties of this wiring reduce fire risk and ensure public safety; its easy-tear fabric design facilitates quick wiring work during equipment upgrades or line adjustments.

[0100] 3. In hospitals, medical equipment has stringent requirements for the stability and safety of the power supply. High flame-retardant properties prevent fires caused by wiring faults, which could disrupt medical treatment; the parallel easy-tear fabric facilitates quick repair or replacement of wiring by medical staff in emergencies.

[0101] 4. In chemical plants and storage areas for flammable and explosive materials, even a small ignition source can cause a serious accident. The high flame-retardant properties of this type of wire effectively reduce the possibility of the wire becoming an ignition source, ensuring the safety of production and storage.

[0102] 5. In data centers, the operation of numerous servers and network devices requires stable power support. High flame-retardant properties reduce fire damage to critical equipment, while the parallel easy-tear fabric facilitates quick line maintenance and upgrades by technicians, ensuring the continuous operation of the data center.

[0103] 6. In transportation hubs such as subways and tunnels, the space is relatively enclosed, making personnel evacuation difficult. High flame-retardant parallel easy-tear fabric electrical wires can improve the fire safety of the power system and ensure the normal operation of transportation facilities.

[0104] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A high flame-retardant, easy-tear cloth wire, comprising a cable core and a sheath enclosing the cable core, characterized in that: The cable core includes several current-carrying conductors and an insulating layer. The insulating layer is wrapped around the outer layer of the current-carrying conductors, and a grounding conductor is provided between the current-carrying conductors. The sheath is a fire-resistant cloth sheath.

2. The high flame-retardant easy-tear cloth wire according to claim 1, characterized in that: The number of energized conductors is 2, and the number of grounded conductors is 1.

3. The high flame-retardant easy-tear cloth wire according to claim 1 or 2, characterized in that: The cross-section of the wire is a flat, elongated shape, while the cross-sections of the current-carrying conductor and the grounding conductor are circular.

4. The high flame-retardant easy-tear cloth wire according to claim 3, characterized in that: The two current-carrying conductors are arranged side by side in the cable core, and a grounding conductor is arranged between the two current-carrying conductors.

5. The high flame-retardant easy-tear cloth wire according to claim 4, characterized in that: The cross-sectional shape of the cable core is axisymmetric, and there are two axes that can satisfy axisymmetry.

6. A high flame-retardant, easy-tear fabric wire according to claim 1 or 5, characterized in that: The current-carrying conductor is a nickel-chromium alloy conductor, which is made of the sixth type of nickel-chromium alloy wire in GB / T 3956 standard. First, the sixth type of nickel-chromium alloy wire is regularly twisted into a single strand, and then each strand is re-twisted.

7. A high flame-retardant, easy-tear fabric wire according to claim 1 or 5, characterized in that: The insulating layer is a polyimide layer.

8. The high flame-retardant easy-tear cloth wire according to claim 7, characterized in that: The nominal thickness of the insulation layer is 0.8 mm, the average thickness of the insulation layer is not less than the nominal thickness, and the thinnest point of the insulation layer is not less than 90% of the nominal value.

9. A high flame-retardant, easy-tear fabric wire according to claim 1, 5, or 8, characterized in that: The extrusion thickness of the sheath is controlled at 1.0±0.15mm.

10. The high flame-retardant easy-tear cloth wire according to claim 1, characterized in that: The grounding conductor is made of the sixth type of copper-nickel alloy wire in GB / T3956 standard. The grounding conductor is made of 19 copper-nickel alloy wires with a diameter of 0.52mm twisted together, with a twist pitch of 40~50mm.

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